]> git.lizzy.rs Git - dragonfireclient.git/blobdiff - src/scriptapi.cpp
Pre-select current game in world creation dialog
[dragonfireclient.git] / src / scriptapi.cpp
index 7fddcfc68a61dba5cb38dbffc7c3e51812295d7f..f0fe1950e0127b270fb58a0e8908cf5c5dc4079a 100644 (file)
@@ -27,89 +27,29 @@ extern "C" {
 #include <lauxlib.h>
 }
 
-#include "log.h"
-#include "server.h"
-#include "porting.h"
-#include "filesys.h"
-#include "serverobject.h"
-#include "script.h"
-#include "object_properties.h"
-#include "content_sao.h" // For LuaEntitySAO and PlayerSAO
-#include "itemdef.h"
-#include "nodedef.h"
-#include "biome.h"
-#include "craftdef.h"
-#include "main.h" // For g_settings
 #include "settings.h" // For accessing g_settings
-#include "nodemetadata.h"
-#include "mapblock.h" // For getNodeBlockPos
-#include "content_nodemeta.h"
-#include "tool.h"
-#include "daynightratio.h"
-#include "noise.h" // PseudoRandom for LuaPseudoRandom
-#include "util/pointedthing.h"
+#include "main.h" // For g_settings
+#include "biome.h"
+#include "emerge.h"
+#include "script.h"
 #include "rollback.h"
-#include "treegen.h"
-
-static void stackDump(lua_State *L, std::ostream &o)
-{
-  int i;
-  int top = lua_gettop(L);
-  for (i = 1; i <= top; i++) {  /* repeat for each level */
-       int t = lua_type(L, i);
-       switch (t) {
-
-         case LUA_TSTRING:  /* strings */
-               o<<"\""<<lua_tostring(L, i)<<"\"";
-               break;
-
-         case LUA_TBOOLEAN:  /* booleans */
-               o<<(lua_toboolean(L, i) ? "true" : "false");
-               break;
-
-         case LUA_TNUMBER:  /* numbers */ {
-               char buf[10];
-               snprintf(buf, 10, "%g", lua_tonumber(L, i));
-               o<<buf;
-               break; }
-
-         default:  /* other values */
-               o<<lua_typename(L, t);
-               break;
-
-       }
-       o<<" ";
-  }
-  o<<std::endl;
-}
-
-static void realitycheck(lua_State *L)
-{
-       int top = lua_gettop(L);
-       if(top >= 30){
-               dstream<<"Stack is over 30:"<<std::endl;
-               stackDump(L, dstream);
-               script_error(L, "Stack is over 30 (reality check)");
-       }
-}
 
-class StackUnroller
-{
-private:
-       lua_State *m_lua;
-       int m_original_top;
-public:
-       StackUnroller(lua_State *L):
-               m_lua(L),
-               m_original_top(-1)
-       {
-               m_original_top = lua_gettop(m_lua); // store stack height
-       }
-       ~StackUnroller()
-       {
-               lua_settop(m_lua, m_original_top); // restore stack height
-       }
-};
+#include "scriptapi_types.h"
+#include "scriptapi_env.h"
+#include "scriptapi_nodetimer.h"
+#include "scriptapi_inventory.h"
+#include "scriptapi_nodemeta.h"
+#include "scriptapi_object.h"
+#include "scriptapi_noise.h"
+#include "scriptapi_common.h"
+#include "scriptapi_item.h"
+#include "scriptapi_content.h"
+#include "scriptapi_craft.h"
+#include "scriptapi_particles.h"
+
+/*****************************************************************************/
+/* Mod related                                                               */
+/*****************************************************************************/
 
 class ModNameStorer
 {
@@ -131,311 +71,167 @@ class ModNameStorer
        }
 };
 
-/*
-       Getters for stuff in main tables
-*/
-
-static Server* get_server(lua_State *L)
-{
-       // Get server from registry
-       lua_getfield(L, LUA_REGISTRYINDEX, "minetest_server");
-       Server *server = (Server*)lua_touserdata(L, -1);
-       lua_pop(L, 1);
-       return server;
-}
-
-static ServerEnvironment* get_env(lua_State *L)
-{
-       // Get environment from registry
-       lua_getfield(L, LUA_REGISTRYINDEX, "minetest_env");
-       ServerEnvironment *env = (ServerEnvironment*)lua_touserdata(L, -1);
-       lua_pop(L, 1);
-       return env;
-}
-
-static void objectref_get(lua_State *L, u16 id)
+bool scriptapi_loadmod(lua_State *L, const std::string &scriptpath,
+               const std::string &modname)
 {
-       // Get minetest.object_refs[i]
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "object_refs");
-       luaL_checktype(L, -1, LUA_TTABLE);
-       lua_pushnumber(L, id);
-       lua_gettable(L, -2);
-       lua_remove(L, -2); // object_refs
-       lua_remove(L, -2); // minetest
-}
+       ModNameStorer modnamestorer(L, modname);
 
-static void luaentity_get(lua_State *L, u16 id)
-{
-       // Get minetest.luaentities[i]
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "luaentities");
-       luaL_checktype(L, -1, LUA_TTABLE);
-       lua_pushnumber(L, id);
-       lua_gettable(L, -2);
-       lua_remove(L, -2); // luaentities
-       lua_remove(L, -2); // minetest
-}
+       if(!string_allowed(modname, "abcdefghijklmnopqrstuvwxyz"
+                       "0123456789_")){
+               errorstream<<"Error loading mod \""<<modname
+                               <<"\": modname does not follow naming conventions: "
+                               <<"Only chararacters [a-z0-9_] are allowed."<<std::endl;
+               return false;
+       }
 
-/*
-       Table field getters
-*/
+       bool success = false;
 
-static bool getstringfield(lua_State *L, int table,
-               const char *fieldname, std::string &result)
-{
-       lua_getfield(L, table, fieldname);
-       bool got = false;
-       if(lua_isstring(L, -1)){
-               size_t len = 0;
-               const char *ptr = lua_tolstring(L, -1, &len);
-               result.assign(ptr, len);
-               got = true;
+       try{
+               success = script_load(L, scriptpath.c_str());
        }
-       lua_pop(L, 1);
-       return got;
-}
-
-static bool getintfield(lua_State *L, int table,
-               const char *fieldname, int &result)
-{
-       lua_getfield(L, table, fieldname);
-       bool got = false;
-       if(lua_isnumber(L, -1)){
-               result = lua_tonumber(L, -1);
-               got = true;
+       catch(LuaError &e){
+               errorstream<<"Error loading mod \""<<modname
+                               <<"\": "<<e.what()<<std::endl;
        }
-       lua_pop(L, 1);
-       return got;
-}
 
-static bool getfloatfield(lua_State *L, int table,
-               const char *fieldname, float &result)
-{
-       lua_getfield(L, table, fieldname);
-       bool got = false;
-       if(lua_isnumber(L, -1)){
-               result = lua_tonumber(L, -1);
-               got = true;
-       }
-       lua_pop(L, 1);
-       return got;
+       return success;
 }
 
-static bool getboolfield(lua_State *L, int table,
-               const char *fieldname, bool &result)
-{
-       lua_getfield(L, table, fieldname);
-       bool got = false;
-       if(lua_isboolean(L, -1)){
-               result = lua_toboolean(L, -1);
-               got = true;
-       }
-       lua_pop(L, 1);
-       return got;
-}
 
-static std::string checkstringfield(lua_State *L, int table,
-               const char *fieldname)
-{
-       lua_getfield(L, table, fieldname);
-       std::string s = luaL_checkstring(L, -1);
-       lua_pop(L, 1);
-       return s;
-}
+/*****************************************************************************/
+/* Auth                                                                      */
+/*****************************************************************************/
 
-static std::string getstringfield_default(lua_State *L, int table,
-               const char *fieldname, const std::string &default_)
+/*
+       Privileges
+*/
+static void read_privileges(lua_State *L, int index,
+               std::set<std::string> &result)
 {
-       std::string result = default_;
-       getstringfield(L, table, fieldname, result);
-       return result;
+       result.clear();
+       lua_pushnil(L);
+       if(index < 0)
+               index -= 1;
+       while(lua_next(L, index) != 0){
+               // key at index -2 and value at index -1
+               std::string key = luaL_checkstring(L, -2);
+               bool value = lua_toboolean(L, -1);
+               if(value)
+                       result.insert(key);
+               // removes value, keeps key for next iteration
+               lua_pop(L, 1);
+       }
 }
 
-static int getintfield_default(lua_State *L, int table,
-               const char *fieldname, int default_)
+static void get_auth_handler(lua_State *L)
 {
-       int result = default_;
-       getintfield(L, table, fieldname, result);
-       return result;
+       lua_getglobal(L, "minetest");
+       lua_getfield(L, -1, "registered_auth_handler");
+       if(lua_isnil(L, -1)){
+               lua_pop(L, 1);
+               lua_getfield(L, -1, "builtin_auth_handler");
+       }
+       if(lua_type(L, -1) != LUA_TTABLE)
+               throw LuaError(L, "Authentication handler table not valid");
 }
 
-static float getfloatfield_default(lua_State *L, int table,
-               const char *fieldname, float default_)
+bool scriptapi_get_auth(lua_State *L, const std::string &playername,
+               std::string *dst_password, std::set<std::string> *dst_privs)
 {
-       float result = default_;
-       getfloatfield(L, table, fieldname, result);
-       return result;
-}
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
 
-static bool getboolfield_default(lua_State *L, int table,
-               const char *fieldname, bool default_)
-{
-       bool result = default_;
-       getboolfield(L, table, fieldname, result);
-       return result;
-}
+       get_auth_handler(L);
+       lua_getfield(L, -1, "get_auth");
+       if(lua_type(L, -1) != LUA_TFUNCTION)
+               throw LuaError(L, "Authentication handler missing get_auth");
+       lua_pushstring(L, playername.c_str());
+       if(lua_pcall(L, 1, 1, 0))
+               script_error(L, "error: %s", lua_tostring(L, -1));
 
-struct EnumString
-{
-       int num;
-       const char *str;
-};
+       // nil = login not allowed
+       if(lua_isnil(L, -1))
+               return false;
+       luaL_checktype(L, -1, LUA_TTABLE);
 
-static bool string_to_enum(const EnumString *spec, int &result,
-               const std::string &str)
-{
-       const EnumString *esp = spec;
-       while(esp->str){
-               if(str == std::string(esp->str)){
-                       result = esp->num;
-                       return true;
-               }
-               esp++;
-       }
-       return false;
-}
+       std::string password;
+       bool found = getstringfield(L, -1, "password", password);
+       if(!found)
+               throw LuaError(L, "Authentication handler didn't return password");
+       if(dst_password)
+               *dst_password = password;
 
-/*static bool enum_to_string(const EnumString *spec, std::string &result,
-               int num)
-{
-       const EnumString *esp = spec;
-       while(esp){
-               if(num == esp->num){
-                       result = esp->str;
-                       return true;
-               }
-               esp++;
-       }
-       return false;
-}*/
+       lua_getfield(L, -1, "privileges");
+       if(!lua_istable(L, -1))
+               throw LuaError(L,
+                               "Authentication handler didn't return privilege table");
+       if(dst_privs)
+               read_privileges(L, -1, *dst_privs);
+       lua_pop(L, 1);
 
-static int getenumfield(lua_State *L, int table,
-               const char *fieldname, const EnumString *spec, int default_)
-{
-       int result = default_;
-       string_to_enum(spec, result,
-                       getstringfield_default(L, table, fieldname, ""));
-       return result;
+       return true;
 }
 
-static void setintfield(lua_State *L, int table,
-               const char *fieldname, int value)
+void scriptapi_create_auth(lua_State *L, const std::string &playername,
+               const std::string &password)
 {
-       lua_pushinteger(L, value);
-       if(table < 0)
-               table -= 1;
-       lua_setfield(L, table, fieldname);
-}
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
 
-static void setfloatfield(lua_State *L, int table,
-               const char *fieldname, float value)
-{
-       lua_pushnumber(L, value);
-       if(table < 0)
-               table -= 1;
-       lua_setfield(L, table, fieldname);
+       get_auth_handler(L);
+       lua_getfield(L, -1, "create_auth");
+       if(lua_type(L, -1) != LUA_TFUNCTION)
+               throw LuaError(L, "Authentication handler missing create_auth");
+       lua_pushstring(L, playername.c_str());
+       lua_pushstring(L, password.c_str());
+       if(lua_pcall(L, 2, 0, 0))
+               script_error(L, "error: %s", lua_tostring(L, -1));
 }
 
-static void setboolfield(lua_State *L, int table,
-               const char *fieldname, bool value)
+bool scriptapi_set_password(lua_State *L, const std::string &playername,
+               const std::string &password)
 {
-       lua_pushboolean(L, value);
-       if(table < 0)
-               table -= 1;
-       lua_setfield(L, table, fieldname);
-}
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
 
-static void warn_if_field_exists(lua_State *L, int table,
-               const char *fieldname, const std::string &message)
-{
-       lua_getfield(L, table, fieldname);
-       if(!lua_isnil(L, -1)){
-               infostream<<script_get_backtrace(L)<<std::endl;
-               infostream<<"WARNING: field \""<<fieldname<<"\": "
-                               <<message<<std::endl;
-       }
-       lua_pop(L, 1);
+       get_auth_handler(L);
+       lua_getfield(L, -1, "set_password");
+       if(lua_type(L, -1) != LUA_TFUNCTION)
+               throw LuaError(L, "Authentication handler missing set_password");
+       lua_pushstring(L, playername.c_str());
+       lua_pushstring(L, password.c_str());
+       if(lua_pcall(L, 2, 1, 0))
+               script_error(L, "error: %s", lua_tostring(L, -1));
+       return lua_toboolean(L, -1);
 }
 
+/*****************************************************************************/
+/* Misc                                                                      */
+/*****************************************************************************/
 /*
-       EnumString definitions
+       Groups
 */
-
-struct EnumString es_ItemType[] =
-{
-       {ITEM_NONE, "none"},
-       {ITEM_NODE, "node"},
-       {ITEM_CRAFT, "craft"},
-       {ITEM_TOOL, "tool"},
-       {0, NULL},
-};
-
-struct EnumString es_DrawType[] =
-{
-       {NDT_NORMAL, "normal"},
-       {NDT_AIRLIKE, "airlike"},
-       {NDT_LIQUID, "liquid"},
-       {NDT_FLOWINGLIQUID, "flowingliquid"},
-       {NDT_GLASSLIKE, "glasslike"},
-       {NDT_ALLFACES, "allfaces"},
-       {NDT_ALLFACES_OPTIONAL, "allfaces_optional"},
-       {NDT_TORCHLIKE, "torchlike"},
-       {NDT_SIGNLIKE, "signlike"},
-       {NDT_PLANTLIKE, "plantlike"},
-       {NDT_FENCELIKE, "fencelike"},
-       {NDT_RAILLIKE, "raillike"},
-       {NDT_NODEBOX, "nodebox"},
-       {0, NULL},
-};
-
-struct EnumString es_ContentParamType[] =
-{
-       {CPT_NONE, "none"},
-       {CPT_LIGHT, "light"},
-       {0, NULL},
-};
-
-struct EnumString es_ContentParamType2[] =
-{
-       {CPT2_NONE, "none"},
-       {CPT2_FULL, "full"},
-       {CPT2_FLOWINGLIQUID, "flowingliquid"},
-       {CPT2_FACEDIR, "facedir"},
-       {CPT2_WALLMOUNTED, "wallmounted"},
-       {0, NULL},
-};
-
-struct EnumString es_LiquidType[] =
-{
-       {LIQUID_NONE, "none"},
-       {LIQUID_FLOWING, "flowing"},
-       {LIQUID_SOURCE, "source"},
-       {0, NULL},
-};
-
-struct EnumString es_NodeBoxType[] =
-{
-       {NODEBOX_REGULAR, "regular"},
-       {NODEBOX_FIXED, "fixed"},
-       {NODEBOX_WALLMOUNTED, "wallmounted"},
-       {0, NULL},
-};
-
-struct EnumString es_CraftMethod[] =
-{
-       {CRAFT_METHOD_NORMAL, "normal"},
-       {CRAFT_METHOD_COOKING, "cooking"},
-       {CRAFT_METHOD_FUEL, "fuel"},
-       {0, NULL},
-};
-
-struct EnumString es_TileAnimationType[] =
+void read_groups(lua_State *L, int index,
+               std::map<std::string, int> &result)
 {
-       {TAT_NONE, "none"},
-       {TAT_VERTICAL_FRAMES, "vertical_frames"},
-       {0, NULL},
-};
+       if (!lua_istable(L,index))
+               return;
+       result.clear();
+       lua_pushnil(L);
+       if(index < 0)
+               index -= 1;
+       while(lua_next(L, index) != 0){
+               // key at index -2 and value at index -1
+               std::string name = luaL_checkstring(L, -2);
+               int rating = luaL_checkinteger(L, -1);
+               result[name] = rating;
+               // removes value, keeps key for next iteration
+               lua_pop(L, 1);
+       }
+}
 
 struct EnumString es_BiomeTerrainType[] =
 {
@@ -447,6759 +243,940 @@ struct EnumString es_BiomeTerrainType[] =
        {0, NULL},
 };
 
+struct EnumString es_OreType[] =
+{
+       {ORE_SCATTER,  "scatter"},
+       {ORE_SHEET,    "sheet"},
+       {ORE_CLAYLIKE, "claylike"},
+       {0, NULL},
+};
+
+/*****************************************************************************/
+/* Parameters                                                                */
+/*****************************************************************************/
 /*
-       C struct <-> Lua table converter functions
+       DigParams
 */
 
-static void push_v3f(lua_State *L, v3f p)
+static void set_dig_params(lua_State *L, int table,
+               const DigParams &params)
 {
-       lua_newtable(L);
-       lua_pushnumber(L, p.X);
-       lua_setfield(L, -2, "x");
-       lua_pushnumber(L, p.Y);
-       lua_setfield(L, -2, "y");
-       lua_pushnumber(L, p.Z);
-       lua_setfield(L, -2, "z");
+       setboolfield(L, table, "diggable", params.diggable);
+       setfloatfield(L, table, "time", params.time);
+       setintfield(L, table, "wear", params.wear);
 }
 
-static v2s16 read_v2s16(lua_State *L, int index)
+static void push_dig_params(lua_State *L,
+               const DigParams &params)
 {
-       v2s16 p;
-       luaL_checktype(L, index, LUA_TTABLE);
-       lua_getfield(L, index, "x");
-       p.X = lua_tonumber(L, -1);
-       lua_pop(L, 1);
-       lua_getfield(L, index, "y");
-       p.Y = lua_tonumber(L, -1);
-       lua_pop(L, 1);
-       return p;
+       lua_newtable(L);
+       set_dig_params(L, -1, params);
 }
 
-static v2f read_v2f(lua_State *L, int index)
-{
-       v2f p;
-       luaL_checktype(L, index, LUA_TTABLE);
-       lua_getfield(L, index, "x");
-       p.X = lua_tonumber(L, -1);
-       lua_pop(L, 1);
-       lua_getfield(L, index, "y");
-       p.Y = lua_tonumber(L, -1);
-       lua_pop(L, 1);
-       return p;
-}
+/*
+       HitParams
+*/
 
-static v3f read_v3f(lua_State *L, int index)
+static void set_hit_params(lua_State *L, int table,
+               const HitParams &params)
 {
-       v3f pos;
-       luaL_checktype(L, index, LUA_TTABLE);
-       lua_getfield(L, index, "x");
-       pos.X = lua_tonumber(L, -1);
-       lua_pop(L, 1);
-       lua_getfield(L, index, "y");
-       pos.Y = lua_tonumber(L, -1);
-       lua_pop(L, 1);
-       lua_getfield(L, index, "z");
-       pos.Z = lua_tonumber(L, -1);
-       lua_pop(L, 1);
-       return pos;
+       setintfield(L, table, "hp", params.hp);
+       setintfield(L, table, "wear", params.wear);
 }
 
-static v3f check_v3f(lua_State *L, int index)
+static void push_hit_params(lua_State *L,
+               const HitParams &params)
 {
-       v3f pos;
-       luaL_checktype(L, index, LUA_TTABLE);
-       lua_getfield(L, index, "x");
-       pos.X = luaL_checknumber(L, -1);
-       lua_pop(L, 1);
-       lua_getfield(L, index, "y");
-       pos.Y = luaL_checknumber(L, -1);
-       lua_pop(L, 1);
-       lua_getfield(L, index, "z");
-       pos.Z = luaL_checknumber(L, -1);
-       lua_pop(L, 1);
-       return pos;
+       lua_newtable(L);
+       set_hit_params(L, -1, params);
 }
 
-static void pushFloatPos(lua_State *L, v3f p)
-{
-       p /= BS;
-       push_v3f(L, p);
-}
+/*
+       ServerSoundParams
+*/
 
-static v3f checkFloatPos(lua_State *L, int index)
+static void read_server_sound_params(lua_State *L, int index,
+               ServerSoundParams &params)
 {
-       return check_v3f(L, index) * BS;
+       if(index < 0)
+               index = lua_gettop(L) + 1 + index;
+       // Clear
+       params = ServerSoundParams();
+       if(lua_istable(L, index)){
+               getfloatfield(L, index, "gain", params.gain);
+               getstringfield(L, index, "to_player", params.to_player);
+               lua_getfield(L, index, "pos");
+               if(!lua_isnil(L, -1)){
+                       v3f p = read_v3f(L, -1)*BS;
+                       params.pos = p;
+                       params.type = ServerSoundParams::SSP_POSITIONAL;
+               }
+               lua_pop(L, 1);
+               lua_getfield(L, index, "object");
+               if(!lua_isnil(L, -1)){
+                       ObjectRef *ref = ObjectRef::checkobject(L, -1);
+                       ServerActiveObject *sao = ObjectRef::getobject(ref);
+                       if(sao){
+                               params.object = sao->getId();
+                               params.type = ServerSoundParams::SSP_OBJECT;
+                       }
+               }
+               lua_pop(L, 1);
+               params.max_hear_distance = BS*getfloatfield_default(L, index,
+                               "max_hear_distance", params.max_hear_distance/BS);
+               getboolfield(L, index, "loop", params.loop);
+       }
 }
 
-static void push_v3s16(lua_State *L, v3s16 p)
-{
-       lua_newtable(L);
-       lua_pushnumber(L, p.X);
-       lua_setfield(L, -2, "x");
-       lua_pushnumber(L, p.Y);
-       lua_setfield(L, -2, "y");
-       lua_pushnumber(L, p.Z);
-       lua_setfield(L, -2, "z");
-}
+/*****************************************************************************/
+/* callbacks                                                                 */
+/*****************************************************************************/
 
-static v3s16 read_v3s16(lua_State *L, int index)
+// Push the list of callbacks (a lua table).
+// Then push nargs arguments.
+// Then call this function, which
+// - runs the callbacks
+// - removes the table and arguments from the lua stack
+// - pushes the return value, computed depending on mode
+void scriptapi_run_callbacks(lua_State *L, int nargs,
+               RunCallbacksMode mode)
 {
-       // Correct rounding at <0
-       v3f pf = read_v3f(L, index);
-       return floatToInt(pf, 1.0);
-}
+       // Insert the return value into the lua stack, below the table
+       assert(lua_gettop(L) >= nargs + 1);
+       lua_pushnil(L);
+       lua_insert(L, -(nargs + 1) - 1);
+       // Stack now looks like this:
+       // ... <return value = nil> <table> <arg#1> <arg#2> ... <arg#n>
 
-static v3s16 check_v3s16(lua_State *L, int index)
-{
-       // Correct rounding at <0
-       v3f pf = check_v3f(L, index);
-       return floatToInt(pf, 1.0);
-}
+       int rv = lua_gettop(L) - nargs - 1;
+       int table = rv + 1;
+       int arg = table + 1;
 
-static void pushnode(lua_State *L, const MapNode &n, INodeDefManager *ndef)
-{
-       lua_newtable(L);
-       lua_pushstring(L, ndef->get(n).name.c_str());
-       lua_setfield(L, -2, "name");
-       lua_pushnumber(L, n.getParam1());
-       lua_setfield(L, -2, "param1");
-       lua_pushnumber(L, n.getParam2());
-       lua_setfield(L, -2, "param2");
-}
+       luaL_checktype(L, table, LUA_TTABLE);
 
-static MapNode readnode(lua_State *L, int index, INodeDefManager *ndef)
-{
-       lua_getfield(L, index, "name");
-       const char *name = luaL_checkstring(L, -1);
-       lua_pop(L, 1);
-       u8 param1;
-       lua_getfield(L, index, "param1");
-       if(lua_isnil(L, -1))
-               param1 = 0;
-       else
-               param1 = lua_tonumber(L, -1);
-       lua_pop(L, 1);
-       u8 param2;
-       lua_getfield(L, index, "param2");
-       if(lua_isnil(L, -1))
-               param2 = 0;
-       else
-               param2 = lua_tonumber(L, -1);
-       lua_pop(L, 1);
-       return MapNode(ndef, name, param1, param2);
-}
+       // Foreach
+       lua_pushnil(L);
+       bool first_loop = true;
+       while(lua_next(L, table) != 0){
+               // key at index -2 and value at index -1
+               luaL_checktype(L, -1, LUA_TFUNCTION);
+               // Call function
+               for(int i = 0; i < nargs; i++)
+                       lua_pushvalue(L, arg+i);
+               if(lua_pcall(L, nargs, 1, 0))
+                       script_error(L, "error: %s", lua_tostring(L, -1));
 
-static video::SColor readARGB8(lua_State *L, int index)
-{
-       video::SColor color;
-       luaL_checktype(L, index, LUA_TTABLE);
-       lua_getfield(L, index, "a");
-       if(lua_isnumber(L, -1))
-               color.setAlpha(lua_tonumber(L, -1));
-       lua_pop(L, 1);
-       lua_getfield(L, index, "r");
-       color.setRed(lua_tonumber(L, -1));
-       lua_pop(L, 1);
-       lua_getfield(L, index, "g");
-       color.setGreen(lua_tonumber(L, -1));
-       lua_pop(L, 1);
-       lua_getfield(L, index, "b");
-       color.setBlue(lua_tonumber(L, -1));
-       lua_pop(L, 1);
-       return color;
-}
+               // Move return value to designated space in stack
+               // Or pop it
+               if(first_loop){
+                       // Result of first callback is always moved
+                       lua_replace(L, rv);
+                       first_loop = false;
+               } else {
+                       // Otherwise, what happens depends on the mode
+                       if(mode == RUN_CALLBACKS_MODE_FIRST)
+                               lua_pop(L, 1);
+                       else if(mode == RUN_CALLBACKS_MODE_LAST)
+                               lua_replace(L, rv);
+                       else if(mode == RUN_CALLBACKS_MODE_AND ||
+                                       mode == RUN_CALLBACKS_MODE_AND_SC){
+                               if((bool)lua_toboolean(L, rv) == true &&
+                                               (bool)lua_toboolean(L, -1) == false)
+                                       lua_replace(L, rv);
+                               else
+                                       lua_pop(L, 1);
+                       }
+                       else if(mode == RUN_CALLBACKS_MODE_OR ||
+                                       mode == RUN_CALLBACKS_MODE_OR_SC){
+                               if((bool)lua_toboolean(L, rv) == false &&
+                                               (bool)lua_toboolean(L, -1) == true)
+                                       lua_replace(L, rv);
+                               else
+                                       lua_pop(L, 1);
+                       }
+                       else
+                               assert(0);
+               }
 
-static aabb3f read_aabb3f(lua_State *L, int index, f32 scale)
-{
-       aabb3f box;
-       if(lua_istable(L, index)){
-               lua_rawgeti(L, index, 1);
-               box.MinEdge.X = lua_tonumber(L, -1) * scale;
-               lua_pop(L, 1);
-               lua_rawgeti(L, index, 2);
-               box.MinEdge.Y = lua_tonumber(L, -1) * scale;
-               lua_pop(L, 1);
-               lua_rawgeti(L, index, 3);
-               box.MinEdge.Z = lua_tonumber(L, -1) * scale;
-               lua_pop(L, 1);
-               lua_rawgeti(L, index, 4);
-               box.MaxEdge.X = lua_tonumber(L, -1) * scale;
-               lua_pop(L, 1);
-               lua_rawgeti(L, index, 5);
-               box.MaxEdge.Y = lua_tonumber(L, -1) * scale;
-               lua_pop(L, 1);
-               lua_rawgeti(L, index, 6);
-               box.MaxEdge.Z = lua_tonumber(L, -1) * scale;
-               lua_pop(L, 1);
+               // Handle short circuit modes
+               if(mode == RUN_CALLBACKS_MODE_AND_SC &&
+                               (bool)lua_toboolean(L, rv) == false)
+                       break;
+               else if(mode == RUN_CALLBACKS_MODE_OR_SC &&
+                               (bool)lua_toboolean(L, rv) == true)
+                       break;
+
+               // value removed, keep key for next iteration
        }
-       return box;
-}
 
-static std::vector<aabb3f> read_aabb3f_vector(lua_State *L, int index, f32 scale)
-{
-       std::vector<aabb3f> boxes;
-       if(lua_istable(L, index)){
-               int n = lua_objlen(L, index);
-               // Check if it's a single box or a list of boxes
-               bool possibly_single_box = (n == 6);
-               for(int i = 1; i <= n && possibly_single_box; i++){
-                       lua_rawgeti(L, index, i);
-                       if(!lua_isnumber(L, -1))
-                               possibly_single_box = false;
+       // Remove stuff from stack, leaving only the return value
+       lua_settop(L, rv);
+
+       // Fix return value in case no callbacks were called
+       if(first_loop){
+               if(mode == RUN_CALLBACKS_MODE_AND ||
+                               mode == RUN_CALLBACKS_MODE_AND_SC){
                        lua_pop(L, 1);
+                       lua_pushboolean(L, true);
                }
-               if(possibly_single_box){
-                       // Read a single box
-                       boxes.push_back(read_aabb3f(L, index, scale));
-               } else {
-                       // Read a list of boxes
-                       for(int i = 1; i <= n; i++){
-                               lua_rawgeti(L, index, i);
-                               boxes.push_back(read_aabb3f(L, -1, scale));
-                               lua_pop(L, 1);
-                       }
+               else if(mode == RUN_CALLBACKS_MODE_OR ||
+                               mode == RUN_CALLBACKS_MODE_OR_SC){
+                       lua_pop(L, 1);
+                       lua_pushboolean(L, false);
                }
        }
-       return boxes;
 }
 
-static NodeBox read_nodebox(lua_State *L, int index)
+bool scriptapi_on_chat_message(lua_State *L, const std::string &name,
+               const std::string &message)
 {
-       NodeBox nodebox;
-       if(lua_istable(L, -1)){
-               nodebox.type = (NodeBoxType)getenumfield(L, index, "type",
-                               es_NodeBoxType, NODEBOX_REGULAR);
-
-               lua_getfield(L, index, "fixed");
-               if(lua_istable(L, -1))
-                       nodebox.fixed = read_aabb3f_vector(L, -1, BS);
-               lua_pop(L, 1);
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
 
-               lua_getfield(L, index, "wall_top");
-               if(lua_istable(L, -1))
-                       nodebox.wall_top = read_aabb3f(L, -1, BS);
-               lua_pop(L, 1);
+       // Get minetest.registered_on_chat_messages
+       lua_getglobal(L, "minetest");
+       lua_getfield(L, -1, "registered_on_chat_messages");
+       // Call callbacks
+       lua_pushstring(L, name.c_str());
+       lua_pushstring(L, message.c_str());
+       scriptapi_run_callbacks(L, 2, RUN_CALLBACKS_MODE_OR_SC);
+       bool ate = lua_toboolean(L, -1);
+       return ate;
+}
 
-               lua_getfield(L, index, "wall_bottom");
-               if(lua_istable(L, -1))
-                       nodebox.wall_bottom = read_aabb3f(L, -1, BS);
-               lua_pop(L, 1);
+void scriptapi_on_shutdown(lua_State *L)
+{
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
 
-               lua_getfield(L, index, "wall_side");
-               if(lua_istable(L, -1))
-                       nodebox.wall_side = read_aabb3f(L, -1, BS);
-               lua_pop(L, 1);
-       }
-       return nodebox;
+       // Get registered shutdown hooks
+       lua_getglobal(L, "minetest");
+       lua_getfield(L, -1, "registered_on_shutdown");
+       // Call callbacks
+       scriptapi_run_callbacks(L, 0, RUN_CALLBACKS_MODE_FIRST);
 }
 
-/*
-       NoiseParams
-*/
-static NoiseParams *read_noiseparams(lua_State *L, int index)
+void scriptapi_on_newplayer(lua_State *L, ServerActiveObject *player)
 {
-       if (index < 0)
-               index = lua_gettop(L) + 1 + index;
-               
-       if (!lua_istable(L, index))
-               return NULL;
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
 
-       NoiseParams *np = new NoiseParams;
-               
-       np->offset  = getfloatfield_default(L, index, "offset", 0.0);
-       np->scale   = getfloatfield_default(L, index, "scale", 0.0);
-       lua_getfield(L, index, "spread");
-       np->spread  = read_v3f(L, -1);
-       np->seed    = getintfield_default(L, index, "seed", 0);
-       np->octaves = getintfield_default(L, index, "octaves", 0);
-       np->persist = getfloatfield_default(L, index, "persist", 0.0);
-       
-       return np;
+       // Get minetest.registered_on_newplayers
+       lua_getglobal(L, "minetest");
+       lua_getfield(L, -1, "registered_on_newplayers");
+       // Call callbacks
+       objectref_get_or_create(L, player);
+       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
 }
 
-/*
-       Groups
-*/
-static void read_groups(lua_State *L, int index,
-               std::map<std::string, int> &result)
+void scriptapi_on_dieplayer(lua_State *L, ServerActiveObject *player)
 {
-       if (!lua_istable(L,index))
-               return;
-       result.clear();
-       lua_pushnil(L);
-       if(index < 0)
-               index -= 1;
-       while(lua_next(L, index) != 0){
-               // key at index -2 and value at index -1
-               std::string name = luaL_checkstring(L, -2);
-               int rating = luaL_checkinteger(L, -1);
-               result[name] = rating;
-               // removes value, keeps key for next iteration
-               lua_pop(L, 1);
-       }
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
+
+       // Get minetest.registered_on_dieplayers
+       lua_getglobal(L, "minetest");
+       lua_getfield(L, -1, "registered_on_dieplayers");
+       // Call callbacks
+       objectref_get_or_create(L, player);
+       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
 }
 
-/*
-       Privileges
-*/
-static void read_privileges(lua_State *L, int index,
-               std::set<std::string> &result)
+bool scriptapi_on_respawnplayer(lua_State *L, ServerActiveObject *player)
 {
-       result.clear();
-       lua_pushnil(L);
-       if(index < 0)
-               index -= 1;
-       while(lua_next(L, index) != 0){
-               // key at index -2 and value at index -1
-               std::string key = luaL_checkstring(L, -2);
-               bool value = lua_toboolean(L, -1);
-               if(value)
-                       result.insert(key);
-               // removes value, keeps key for next iteration
-               lua_pop(L, 1);
-       }
-}
-
-/*
-       ToolCapabilities
-*/
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
 
-static ToolCapabilities read_tool_capabilities(
-               lua_State *L, int table)
-{
-       ToolCapabilities toolcap;
-       getfloatfield(L, table, "full_punch_interval", toolcap.full_punch_interval);
-       getintfield(L, table, "max_drop_level", toolcap.max_drop_level);
-       lua_getfield(L, table, "groupcaps");
-       if(lua_istable(L, -1)){
-               int table_groupcaps = lua_gettop(L);
-               lua_pushnil(L);
-               while(lua_next(L, table_groupcaps) != 0){
-                       // key at index -2 and value at index -1
-                       std::string groupname = luaL_checkstring(L, -2);
-                       if(lua_istable(L, -1)){
-                               int table_groupcap = lua_gettop(L);
-                               // This will be created
-                               ToolGroupCap groupcap;
-                               // Read simple parameters
-                               getintfield(L, table_groupcap, "maxlevel", groupcap.maxlevel);
-                               getintfield(L, table_groupcap, "uses", groupcap.uses);
-                               // DEPRECATED: maxwear
-                               float maxwear = 0;
-                               if(getfloatfield(L, table_groupcap, "maxwear", maxwear)){
-                                       if(maxwear != 0)
-                                               groupcap.uses = 1.0/maxwear;
-                                       else
-                                               groupcap.uses = 0;
-                                       infostream<<script_get_backtrace(L)<<std::endl;
-                                       infostream<<"WARNING: field \"maxwear\" is deprecated; "
-                                                       <<"should replace with uses=1/maxwear"<<std::endl;
-                               }
-                               // Read "times" table
-                               lua_getfield(L, table_groupcap, "times");
-                               if(lua_istable(L, -1)){
-                                       int table_times = lua_gettop(L);
-                                       lua_pushnil(L);
-                                       while(lua_next(L, table_times) != 0){
-                                               // key at index -2 and value at index -1
-                                               int rating = luaL_checkinteger(L, -2);
-                                               float time = luaL_checknumber(L, -1);
-                                               groupcap.times[rating] = time;
-                                               // removes value, keeps key for next iteration
-                                               lua_pop(L, 1);
-                                       }
-                               }
-                               lua_pop(L, 1);
-                               // Insert groupcap into toolcap
-                               toolcap.groupcaps[groupname] = groupcap;
-                       }
-                       // removes value, keeps key for next iteration
-                       lua_pop(L, 1);
-               }
-       }
-       lua_pop(L, 1);
-       return toolcap;
+       // Get minetest.registered_on_respawnplayers
+       lua_getglobal(L, "minetest");
+       lua_getfield(L, -1, "registered_on_respawnplayers");
+       // Call callbacks
+       objectref_get_or_create(L, player);
+       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_OR);
+       bool positioning_handled_by_some = lua_toboolean(L, -1);
+       return positioning_handled_by_some;
 }
 
-static void set_tool_capabilities(lua_State *L, int table,
-               const ToolCapabilities &toolcap)
+void scriptapi_on_joinplayer(lua_State *L, ServerActiveObject *player)
 {
-       setfloatfield(L, table, "full_punch_interval", toolcap.full_punch_interval);
-       setintfield(L, table, "max_drop_level", toolcap.max_drop_level);
-       // Create groupcaps table
-       lua_newtable(L);
-       // For each groupcap
-       for(std::map<std::string, ToolGroupCap>::const_iterator
-                       i = toolcap.groupcaps.begin(); i != toolcap.groupcaps.end(); i++){
-               // Create groupcap table
-               lua_newtable(L);
-               const std::string &name = i->first;
-               const ToolGroupCap &groupcap = i->second;
-               // Create subtable "times"
-               lua_newtable(L);
-               for(std::map<int, float>::const_iterator
-                               i = groupcap.times.begin(); i != groupcap.times.end(); i++){
-                       int rating = i->first;
-                       float time = i->second;
-                       lua_pushinteger(L, rating);
-                       lua_pushnumber(L, time);
-                       lua_settable(L, -3);
-               }
-               // Set subtable "times"
-               lua_setfield(L, -2, "times");
-               // Set simple parameters
-               setintfield(L, -1, "maxlevel", groupcap.maxlevel);
-               setintfield(L, -1, "uses", groupcap.uses);
-               // Insert groupcap table into groupcaps table
-               lua_setfield(L, -2, name.c_str());
-       }
-       // Set groupcaps table
-       lua_setfield(L, -2, "groupcaps");
-}
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
 
-static void push_tool_capabilities(lua_State *L,
-               const ToolCapabilities &prop)
-{
-       lua_newtable(L);
-       set_tool_capabilities(L, -1, prop);
+       // Get minetest.registered_on_joinplayers
+       lua_getglobal(L, "minetest");
+       lua_getfield(L, -1, "registered_on_joinplayers");
+       // Call callbacks
+       objectref_get_or_create(L, player);
+       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
 }
 
-/*
-       DigParams
-*/
-
-static void set_dig_params(lua_State *L, int table,
-               const DigParams &params)
+void scriptapi_on_leaveplayer(lua_State *L, ServerActiveObject *player)
 {
-       setboolfield(L, table, "diggable", params.diggable);
-       setfloatfield(L, table, "time", params.time);
-       setintfield(L, table, "wear", params.wear);
-}
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
 
-static void push_dig_params(lua_State *L,
-               const DigParams &params)
-{
-       lua_newtable(L);
-       set_dig_params(L, -1, params);
+       // Get minetest.registered_on_leaveplayers
+       lua_getglobal(L, "minetest");
+       lua_getfield(L, -1, "registered_on_leaveplayers");
+       // Call callbacks
+       objectref_get_or_create(L, player);
+       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
 }
 
 /*
-       HitParams
+       player
 */
-
-static void set_hit_params(lua_State *L, int table,
-               const HitParams &params)
+void scriptapi_on_player_receive_fields(lua_State *L,
+               ServerActiveObject *player,
+               const std::string &formname,
+               const std::map<std::string, std::string> &fields)
 {
-       setintfield(L, table, "hp", params.hp);
-       setintfield(L, table, "wear", params.wear);
-}
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       StackUnroller stack_unroller(L);
 
-static void push_hit_params(lua_State *L,
-               const HitParams &params)
-{
+       // Get minetest.registered_on_chat_messages
+       lua_getglobal(L, "minetest");
+       lua_getfield(L, -1, "registered_on_player_receive_fields");
+       // Call callbacks
+       // param 1
+       objectref_get_or_create(L, player);
+       // param 2
+       lua_pushstring(L, formname.c_str());
+       // param 3
        lua_newtable(L);
-       set_hit_params(L, -1, params);
+       for(std::map<std::string, std::string>::const_iterator
+                       i = fields.begin(); i != fields.end(); i++){
+               const std::string &name = i->first;
+               const std::string &value = i->second;
+               lua_pushstring(L, name.c_str());
+               lua_pushlstring(L, value.c_str(), value.size());
+               lua_settable(L, -3);
+       }
+       scriptapi_run_callbacks(L, 3, RUN_CALLBACKS_MODE_OR_SC);
 }
+/*****************************************************************************/
+/* Api functions                                                             */
+/*****************************************************************************/
 
-/*
-       PointedThing
-*/
+// debug(text)
+// Writes a line to dstream
+static int l_debug(lua_State *L)
+{
+       std::string text = lua_tostring(L, 1);
+       dstream << text << std::endl;
+       return 0;
+}
 
-static void push_pointed_thing(lua_State *L, const PointedThing& pointed)
+// log([level,] text)
+// Writes a line to the logger.
+// The one-argument version logs to infostream.
+// The two-argument version accept a log level: error, action, info, or verbose.
+static int l_log(lua_State *L)
 {
-       lua_newtable(L);
-       if(pointed.type == POINTEDTHING_NODE)
-       {
-               lua_pushstring(L, "node");
-               lua_setfield(L, -2, "type");
-               push_v3s16(L, pointed.node_undersurface);
-               lua_setfield(L, -2, "under");
-               push_v3s16(L, pointed.node_abovesurface);
-               lua_setfield(L, -2, "above");
-       }
-       else if(pointed.type == POINTEDTHING_OBJECT)
+       std::string text;
+       LogMessageLevel level = LMT_INFO;
+       if(lua_isnone(L, 2))
        {
-               lua_pushstring(L, "object");
-               lua_setfield(L, -2, "type");
-               objectref_get(L, pointed.object_id);
-               lua_setfield(L, -2, "ref");
+               text = lua_tostring(L, 1);
        }
        else
        {
-               lua_pushstring(L, "nothing");
-               lua_setfield(L, -2, "type");
+               std::string levelname = luaL_checkstring(L, 1);
+               text = luaL_checkstring(L, 2);
+               if(levelname == "error")
+                       level = LMT_ERROR;
+               else if(levelname == "action")
+                       level = LMT_ACTION;
+               else if(levelname == "verbose")
+                       level = LMT_VERBOSE;
        }
+       log_printline(level, text);
+       return 0;
 }
 
-/*
-       SimpleSoundSpec
-*/
-
-static void read_soundspec(lua_State *L, int index, SimpleSoundSpec &spec)
+// request_shutdown()
+static int l_request_shutdown(lua_State *L)
 {
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
-       if(lua_isnil(L, index)){
-       } else if(lua_istable(L, index)){
-               getstringfield(L, index, "name", spec.name);
-               getfloatfield(L, index, "gain", spec.gain);
-       } else if(lua_isstring(L, index)){
-               spec.name = lua_tostring(L, index);
-       }
+       get_server(L)->requestShutdown();
+       return 0;
 }
 
-/*
-       ObjectProperties
-*/
-
-static void read_object_properties(lua_State *L, int index,
-               ObjectProperties *prop)
+// get_server_status()
+static int l_get_server_status(lua_State *L)
 {
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
-       if(!lua_istable(L, index))
-               return;
-
-       prop->hp_max = getintfield_default(L, -1, "hp_max", 10);
-
-       getboolfield(L, -1, "physical", prop->physical);
-
-       getfloatfield(L, -1, "weight", prop->weight);
-
-       lua_getfield(L, -1, "collisionbox");
-       if(lua_istable(L, -1))
-               prop->collisionbox = read_aabb3f(L, -1, 1.0);
-       lua_pop(L, 1);
-
-       getstringfield(L, -1, "visual", prop->visual);
+       lua_pushstring(L, wide_to_narrow(get_server(L)->getStatusString()).c_str());
+       return 1;
+}
 
-       getstringfield(L, -1, "mesh", prop->mesh);
-       
-       lua_getfield(L, -1, "visual_size");
-       if(lua_istable(L, -1))
-               prop->visual_size = read_v2f(L, -1);
-       lua_pop(L, 1);
 
-       lua_getfield(L, -1, "textures");
-       if(lua_istable(L, -1)){
-               prop->textures.clear();
-               int table = lua_gettop(L);
-               lua_pushnil(L);
-               while(lua_next(L, table) != 0){
-                       // key at index -2 and value at index -1
-                       if(lua_isstring(L, -1))
-                               prop->textures.push_back(lua_tostring(L, -1));
-                       else
-                               prop->textures.push_back("");
-                       // removes value, keeps key for next iteration
-                       lua_pop(L, 1);
-               }
-       }
-       lua_pop(L, 1);
+// register_biome({lots of stuff})
+static int l_register_biome(lua_State *L)
+{
+       int index = 1;
+       luaL_checktype(L, index, LUA_TTABLE);
 
-       lua_getfield(L, -1, "colors");
-       if(lua_istable(L, -1)){
-               prop->colors.clear();
-               int table = lua_gettop(L);
-               lua_pushnil(L);
-               while(lua_next(L, table) != 0){
-                       // key at index -2 and value at index -1
-                       if(lua_isstring(L, -1))
-                               prop->colors.push_back(readARGB8(L, -1));
-                       else
-                               prop->colors.push_back(video::SColor(255, 255, 255, 255));
-                       // removes value, keeps key for next iteration
-                       lua_pop(L, 1);
-               }
+       BiomeDefManager *bmgr = get_server(L)->getEmergeManager()->biomedef;
+       if (!bmgr) {
+               verbosestream << "register_biome: BiomeDefManager not active" << std::endl;
+               return 0;
        }
-       lua_pop(L, 1);
        
-       lua_getfield(L, -1, "spritediv");
-       if(lua_istable(L, -1))
-               prop->spritediv = read_v2s16(L, -1);
-       lua_pop(L, 1);
+       enum BiomeTerrainType terrain = (BiomeTerrainType)getenumfield(L, index,
+                                       "terrain_type", es_BiomeTerrainType, BIOME_TERRAIN_NORMAL);
+       Biome *b = bmgr->createBiome(terrain);
 
-       lua_getfield(L, -1, "initial_sprite_basepos");
-       if(lua_istable(L, -1))
-               prop->initial_sprite_basepos = read_v2s16(L, -1);
-       lua_pop(L, 1);
+       b->name            = getstringfield_default(L, index, "name", "");
+       b->top_nodename    = getstringfield_default(L, index, "top_node", "");
+       b->top_depth       = getintfield_default(L, index, "top_depth", 0);
+       b->filler_nodename = getstringfield_default(L, index, "filler_node", "");
+       b->filler_height   = getintfield_default(L, index, "filler_height", 0);
+       b->height_min      = getintfield_default(L, index, "height_min", 0);
+       b->height_max      = getintfield_default(L, index, "height_max", 0);
+       b->heat_point      = getfloatfield_default(L, index, "heat_point", 0.);
+       b->humidity_point  = getfloatfield_default(L, index, "humidity_point", 0.);
+
+       b->flags    = 0; //reserved
+       b->c_top    = CONTENT_IGNORE;
+       b->c_filler = CONTENT_IGNORE;
+       bmgr->addBiome(b);
 
-       getboolfield(L, -1, "is_visible", prop->is_visible);
-       getboolfield(L, -1, "makes_footstep_sound", prop->makes_footstep_sound);
-       getfloatfield(L, -1, "automatic_rotate", prop->automatic_rotate);
+       verbosestream << "register_biome: " << b->name << std::endl;
+       return 0;
 }
 
-/*
-       ItemDefinition
-*/
 
-static ItemDefinition read_item_definition(lua_State *L, int index,
-               ItemDefinition default_def = ItemDefinition())
+static int l_register_ore(lua_State *L)
 {
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
-
-       // Read the item definition
-       ItemDefinition def = default_def;
-
-       def.type = (ItemType)getenumfield(L, index, "type",
-                       es_ItemType, ITEM_NONE);
-       getstringfield(L, index, "name", def.name);
-       getstringfield(L, index, "description", def.description);
-       getstringfield(L, index, "inventory_image", def.inventory_image);
-       getstringfield(L, index, "wield_image", def.wield_image);
-
-       lua_getfield(L, index, "wield_scale");
-       if(lua_istable(L, -1)){
-               def.wield_scale = check_v3f(L, -1);
+       int index = 1;
+       luaL_checktype(L, index, LUA_TTABLE);
+       
+       EmergeManager *emerge = get_server(L)->getEmergeManager();
+       
+       enum OreType oretype = (OreType)getenumfield(L, index,
+                               "ore_type", es_OreType, ORE_SCATTER);   
+       Ore *ore = createOre(oretype);
+       if (!ore) {
+               errorstream << "register_ore: ore_type "
+                       << oretype << " not implemented";
+               return 0;
        }
+       
+       ore->ore_name       = getstringfield_default(L, index, "ore", "");
+       ore->ore_param2     = (u8)getintfield_default(L, index, "ore_param2", 0);
+       ore->wherein_name   = getstringfield_default(L, index, "wherein", "");
+       ore->clust_scarcity = getintfield_default(L, index, "clust_scarcity", 1);
+       ore->clust_num_ores = getintfield_default(L, index, "clust_num_ores", 1);
+       ore->clust_size     = getintfield_default(L, index, "clust_size", 0);
+       ore->height_min     = getintfield_default(L, index, "height_min", 0);
+       ore->height_max     = getintfield_default(L, index, "height_max", 0);
+       ore->flags          = getflagsfield(L, index, "flags", flagdesc_ore);
+       ore->nthresh        = getfloatfield_default(L, index, "noise_threshhold", 0.);
+
+       lua_getfield(L, index, "noise_params");
+       ore->np = read_noiseparams(L, -1);
        lua_pop(L, 1);
-
-       def.stack_max = getintfield_default(L, index, "stack_max", def.stack_max);
-       if(def.stack_max == 0)
-               def.stack_max = 1;
-
-       lua_getfield(L, index, "on_use");
-       def.usable = lua_isfunction(L, -1);
-       lua_pop(L, 1);
-
-       lua_getfield(L, index, "on_rightclick");
-       def.rightclickable = lua_isfunction(L, -1);
-       lua_pop(L, 1);
-
-       getboolfield(L, index, "liquids_pointable", def.liquids_pointable);
-
-       warn_if_field_exists(L, index, "tool_digging_properties",
-                       "deprecated: use tool_capabilities");
-
-       lua_getfield(L, index, "tool_capabilities");
-       if(lua_istable(L, -1)){
-               def.tool_capabilities = new ToolCapabilities(
-                               read_tool_capabilities(L, -1));
-       }
-
-       // If name is "" (hand), ensure there are ToolCapabilities
-       // because it will be looked up there whenever any other item has
-       // no ToolCapabilities
-       if(def.name == "" && def.tool_capabilities == NULL){
-               def.tool_capabilities = new ToolCapabilities();
+       
+       ore->noise = NULL;
+       
+       if (ore->clust_scarcity <= 0 || ore->clust_num_ores <= 0) {
+               errorstream << "register_ore: clust_scarcity and clust_num_ores"
+                       " must be greater than 0" << std::endl;
+               delete ore;
+               return 0;
        }
-
-       lua_getfield(L, index, "groups");
-       read_groups(L, -1, def.groups);
-       lua_pop(L, 1);
-
-       // Client shall immediately place this node when player places the item.
-       // Server will update the precise end result a moment later.
-       // "" = no prediction
-       getstringfield(L, index, "node_placement_prediction",
-                       def.node_placement_prediction);
-
-       return def;
+       
+       emerge->ores.push_back(ore);
+       
+       verbosestream << "register_ore: ore '" << ore->ore_name
+               << "' registered" << std::endl;
+       return 0;
 }
 
-/*
-       TileDef
-*/
 
-static TileDef read_tiledef(lua_State *L, int index)
+// setting_set(name, value)
+static int l_setting_set(lua_State *L)
 {
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
-
-       TileDef tiledef;
-
-       // key at index -2 and value at index
-       if(lua_isstring(L, index)){
-               // "default_lava.png"
-               tiledef.name = lua_tostring(L, index);
-       }
-       else if(lua_istable(L, index))
-       {
-               // {name="default_lava.png", animation={}}
-               tiledef.name = "";
-               getstringfield(L, index, "name", tiledef.name);
-               getstringfield(L, index, "image", tiledef.name); // MaterialSpec compat.
-               tiledef.backface_culling = getboolfield_default(
-                                       L, index, "backface_culling", true);
-               // animation = {}
-               lua_getfield(L, index, "animation");
-               if(lua_istable(L, -1)){
-                       // {type="vertical_frames", aspect_w=16, aspect_h=16, length=2.0}
-                       tiledef.animation.type = (TileAnimationType)
-                                       getenumfield(L, -1, "type", es_TileAnimationType,
-                                       TAT_NONE);
-                       tiledef.animation.aspect_w =
-                                       getintfield_default(L, -1, "aspect_w", 16);
-                       tiledef.animation.aspect_h =
-                                       getintfield_default(L, -1, "aspect_h", 16);
-                       tiledef.animation.length =
-                                       getfloatfield_default(L, -1, "length", 1.0);
-               }
-               lua_pop(L, 1);
-       }
-
-       return tiledef;
+       const char *name = luaL_checkstring(L, 1);
+       const char *value = luaL_checkstring(L, 2);
+       g_settings->set(name, value);
+       return 0;
 }
 
-/*
-       ContentFeatures
-*/
-
-static ContentFeatures read_content_features(lua_State *L, int index)
+// setting_get(name)
+static int l_setting_get(lua_State *L)
 {
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
-
-       ContentFeatures f;
-
-       /* Cache existence of some callbacks */
-       lua_getfield(L, index, "on_construct");
-       if(!lua_isnil(L, -1)) f.has_on_construct = true;
-       lua_pop(L, 1);
-       lua_getfield(L, index, "on_destruct");
-       if(!lua_isnil(L, -1)) f.has_on_destruct = true;
-       lua_pop(L, 1);
-       lua_getfield(L, index, "after_destruct");
-       if(!lua_isnil(L, -1)) f.has_after_destruct = true;
-       lua_pop(L, 1);
-
-       /* Name */
-       getstringfield(L, index, "name", f.name);
-
-       /* Groups */
-       lua_getfield(L, index, "groups");
-       read_groups(L, -1, f.groups);
-       lua_pop(L, 1);
-
-       /* Visual definition */
-
-       f.drawtype = (NodeDrawType)getenumfield(L, index, "drawtype", es_DrawType,
-                       NDT_NORMAL);
-       getfloatfield(L, index, "visual_scale", f.visual_scale);
-
-       // tiles = {}
-       lua_getfield(L, index, "tiles");
-       // If nil, try the deprecated name "tile_images" instead
-       if(lua_isnil(L, -1)){
-               lua_pop(L, 1);
-               warn_if_field_exists(L, index, "tile_images",
-                               "Deprecated; new name is \"tiles\".");
-               lua_getfield(L, index, "tile_images");
-       }
-       if(lua_istable(L, -1)){
-               int table = lua_gettop(L);
+       const char *name = luaL_checkstring(L, 1);
+       try{
+               std::string value = g_settings->get(name);
+               lua_pushstring(L, value.c_str());
+       } catch(SettingNotFoundException &e){
                lua_pushnil(L);
-               int i = 0;
-               while(lua_next(L, table) != 0){
-                       // Read tiledef from value
-                       f.tiledef[i] = read_tiledef(L, -1);
-                       // removes value, keeps key for next iteration
-                       lua_pop(L, 1);
-                       i++;
-                       if(i==6){
-                               lua_pop(L, 1);
-                               break;
-                       }
-               }
-               // Copy last value to all remaining textures
-               if(i >= 1){
-                       TileDef lasttile = f.tiledef[i-1];
-                       while(i < 6){
-                               f.tiledef[i] = lasttile;
-                               i++;
-                       }
-               }
        }
-       lua_pop(L, 1);
+       return 1;
+}
 
-       // special_tiles = {}
-       lua_getfield(L, index, "special_tiles");
-       // If nil, try the deprecated name "special_materials" instead
-       if(lua_isnil(L, -1)){
-               lua_pop(L, 1);
-               warn_if_field_exists(L, index, "special_materials",
-                               "Deprecated; new name is \"special_tiles\".");
-               lua_getfield(L, index, "special_materials");
-       }
-       if(lua_istable(L, -1)){
-               int table = lua_gettop(L);
+// setting_getbool(name)
+static int l_setting_getbool(lua_State *L)
+{
+       const char *name = luaL_checkstring(L, 1);
+       try{
+               bool value = g_settings->getBool(name);
+               lua_pushboolean(L, value);
+       } catch(SettingNotFoundException &e){
                lua_pushnil(L);
-               int i = 0;
-               while(lua_next(L, table) != 0){
-                       // Read tiledef from value
-                       f.tiledef_special[i] = read_tiledef(L, -1);
-                       // removes value, keeps key for next iteration
-                       lua_pop(L, 1);
-                       i++;
-                       if(i==6){
-                               lua_pop(L, 1);
-                               break;
-                       }
-               }
-       }
-       lua_pop(L, 1);
-
-       f.alpha = getintfield_default(L, index, "alpha", 255);
-
-       /* Other stuff */
-
-       lua_getfield(L, index, "post_effect_color");
-       if(!lua_isnil(L, -1))
-               f.post_effect_color = readARGB8(L, -1);
-       lua_pop(L, 1);
-
-       f.param_type = (ContentParamType)getenumfield(L, index, "paramtype",
-                       es_ContentParamType, CPT_NONE);
-       f.param_type_2 = (ContentParamType2)getenumfield(L, index, "paramtype2",
-                       es_ContentParamType2, CPT2_NONE);
-
-       // Warn about some deprecated fields
-       warn_if_field_exists(L, index, "wall_mounted",
-                       "deprecated: use paramtype2 = 'wallmounted'");
-       warn_if_field_exists(L, index, "light_propagates",
-                       "deprecated: determined from paramtype");
-       warn_if_field_exists(L, index, "dug_item",
-                       "deprecated: use 'drop' field");
-       warn_if_field_exists(L, index, "extra_dug_item",
-                       "deprecated: use 'drop' field");
-       warn_if_field_exists(L, index, "extra_dug_item_rarity",
-                       "deprecated: use 'drop' field");
-       warn_if_field_exists(L, index, "metadata_name",
-                       "deprecated: use on_add and metadata callbacks");
-
-       // True for all ground-like things like stone and mud, false for eg. trees
-       getboolfield(L, index, "is_ground_content", f.is_ground_content);
-       f.light_propagates = (f.param_type == CPT_LIGHT);
-       getboolfield(L, index, "sunlight_propagates", f.sunlight_propagates);
-       // This is used for collision detection.
-       // Also for general solidness queries.
-       getboolfield(L, index, "walkable", f.walkable);
-       // Player can point to these
-       getboolfield(L, index, "pointable", f.pointable);
-       // Player can dig these
-       getboolfield(L, index, "diggable", f.diggable);
-       // Player can climb these
-       getboolfield(L, index, "climbable", f.climbable);
-       // Player can build on these
-       getboolfield(L, index, "buildable_to", f.buildable_to);
-       // Whether the node is non-liquid, source liquid or flowing liquid
-       f.liquid_type = (LiquidType)getenumfield(L, index, "liquidtype",
-                       es_LiquidType, LIQUID_NONE);
-       // If the content is liquid, this is the flowing version of the liquid.
-       getstringfield(L, index, "liquid_alternative_flowing",
-                       f.liquid_alternative_flowing);
-       // If the content is liquid, this is the source version of the liquid.
-       getstringfield(L, index, "liquid_alternative_source",
-                       f.liquid_alternative_source);
-       // Viscosity for fluid flow, ranging from 1 to 7, with
-       // 1 giving almost instantaneous propagation and 7 being
-       // the slowest possible
-       f.liquid_viscosity = getintfield_default(L, index,
-                       "liquid_viscosity", f.liquid_viscosity);
-       getboolfield(L, index, "liquid_renewable", f.liquid_renewable);
-       // Amount of light the node emits
-       f.light_source = getintfield_default(L, index,
-                       "light_source", f.light_source);
-       f.damage_per_second = getintfield_default(L, index,
-                       "damage_per_second", f.damage_per_second);
-
-       lua_getfield(L, index, "node_box");
-       if(lua_istable(L, -1))
-               f.node_box = read_nodebox(L, -1);
-       lua_pop(L, 1);
-
-       lua_getfield(L, index, "selection_box");
-       if(lua_istable(L, -1))
-               f.selection_box = read_nodebox(L, -1);
-       lua_pop(L, 1);
-
-       // Set to true if paramtype used to be 'facedir_simple'
-       getboolfield(L, index, "legacy_facedir_simple", f.legacy_facedir_simple);
-       // Set to true if wall_mounted used to be set to true
-       getboolfield(L, index, "legacy_wallmounted", f.legacy_wallmounted);
-
-       // Sound table
-       lua_getfield(L, index, "sounds");
-       if(lua_istable(L, -1)){
-               lua_getfield(L, -1, "footstep");
-               read_soundspec(L, -1, f.sound_footstep);
-               lua_pop(L, 1);
-               lua_getfield(L, -1, "dig");
-               read_soundspec(L, -1, f.sound_dig);
-               lua_pop(L, 1);
-               lua_getfield(L, -1, "dug");
-               read_soundspec(L, -1, f.sound_dug);
-               lua_pop(L, 1);
        }
-       lua_pop(L, 1);
-
-       return f;
+       return 1;
 }
 
-/*
-       Inventory stuff
-*/
-
-static ItemStack read_item(lua_State *L, int index);
-static std::vector<ItemStack> read_items(lua_State *L, int index);
-// creates a table of ItemStacks
-static void push_items(lua_State *L, const std::vector<ItemStack> &items);
-
-static void inventory_set_list_from_lua(Inventory *inv, const char *name,
-               lua_State *L, int tableindex, int forcesize=-1)
+// setting_save()
+static int l_setting_save(lua_State *L)
 {
-       if(tableindex < 0)
-               tableindex = lua_gettop(L) + 1 + tableindex;
-       // If nil, delete list
-       if(lua_isnil(L, tableindex)){
-               inv->deleteList(name);
-               return;
-       }
-       // Otherwise set list
-       std::vector<ItemStack> items = read_items(L, tableindex);
-       int listsize = (forcesize != -1) ? forcesize : items.size();
-       InventoryList *invlist = inv->addList(name, listsize);
-       int index = 0;
-       for(std::vector<ItemStack>::const_iterator
-                       i = items.begin(); i != items.end(); i++){
-               if(forcesize != -1 && index == forcesize)
-                       break;
-               invlist->changeItem(index, *i);
-               index++;
-       }
-       while(forcesize != -1 && index < forcesize){
-               invlist->deleteItem(index);
-               index++;
-       }
+       get_server(L)->saveConfig();
+       return 0;
 }
 
-static void inventory_get_list_to_lua(Inventory *inv, const char *name,
-               lua_State *L)
+// chat_send_all(text)
+static int l_chat_send_all(lua_State *L)
 {
-       InventoryList *invlist = inv->getList(name);
-       if(invlist == NULL){
-               lua_pushnil(L);
-               return;
-       }
-       std::vector<ItemStack> items;
-       for(u32 i=0; i<invlist->getSize(); i++)
-               items.push_back(invlist->getItem(i));
-       push_items(L, items);
+       const char *text = luaL_checkstring(L, 1);
+       // Get server from registry
+       Server *server = get_server(L);
+       // Send
+       server->notifyPlayers(narrow_to_wide(text));
+       return 0;
 }
 
-/*
-       Helpful macros for userdata classes
-*/
-
-#define method(class, name) {#name, class::l_##name}
-
-/*
-       LuaItemStack
-*/
-
-class LuaItemStack
+// chat_send_player(name, text, prepend)
+static int l_chat_send_player(lua_State *L)
 {
-private:
-       ItemStack m_stack;
-
-       static const char className[];
-       static const luaL_reg methods[];
-
-       // Exported functions
+       const char *name = luaL_checkstring(L, 1);
+       const char *text = luaL_checkstring(L, 2);
+       bool prepend = true;
+       if (lua_isboolean(L, 3))
+               prepend = lua_toboolean(L, 3);
+       // Get server from registry
+       Server *server = get_server(L);
+       // Send
+       server->notifyPlayer(name, narrow_to_wide(text), prepend);
+       return 0;
+}
 
-       // garbage collector
-       static int gc_object(lua_State *L)
-       {
-               LuaItemStack *o = *(LuaItemStack **)(lua_touserdata(L, 1));
-               delete o;
-               return 0;
+// get_player_privs(name, text)
+static int l_get_player_privs(lua_State *L)
+{
+       const char *name = luaL_checkstring(L, 1);
+       // Get server from registry
+       Server *server = get_server(L);
+       // Do it
+       lua_newtable(L);
+       int table = lua_gettop(L);
+       std::set<std::string> privs_s = server->getPlayerEffectivePrivs(name);
+       for(std::set<std::string>::const_iterator
+                       i = privs_s.begin(); i != privs_s.end(); i++){
+               lua_pushboolean(L, true);
+               lua_setfield(L, table, i->c_str());
        }
+       lua_pushvalue(L, table);
+       return 1;
+}
 
-       // is_empty(self) -> true/false
-       static int l_is_empty(lua_State *L)
+// get_player_ip()
+static int l_get_player_ip(lua_State *L)
+{
+       const char * name = luaL_checkstring(L, 1);
+       Player *player = get_env(L)->getPlayer(name);
+       if(player == NULL)
        {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               lua_pushboolean(L, item.empty());
+               lua_pushnil(L); // no such player
                return 1;
        }
-
-       // get_name(self) -> string
-       static int l_get_name(lua_State *L)
+       try
        {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               lua_pushstring(L, item.name.c_str());
+               Address addr = get_server(L)->getPeerAddress(get_env(L)->getPlayer(name)->peer_id);
+               std::string ip_str = addr.serializeString();
+               lua_pushstring(L, ip_str.c_str());
                return 1;
        }
-
-       // get_count(self) -> number
-       static int l_get_count(lua_State *L)
+       catch(con::PeerNotFoundException) // unlikely
        {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               lua_pushinteger(L, item.count);
+               dstream << __FUNCTION_NAME << ": peer was not found" << std::endl;
+               lua_pushnil(L); // error
                return 1;
        }
+}
 
-       // get_wear(self) -> number
-       static int l_get_wear(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               lua_pushinteger(L, item.wear);
-               return 1;
-       }
+// get_ban_list()
+static int l_get_ban_list(lua_State *L)
+{
+       lua_pushstring(L, get_server(L)->getBanDescription("").c_str());
+       return 1;
+}
 
-       // get_metadata(self) -> string
-       static int l_get_metadata(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               lua_pushlstring(L, item.metadata.c_str(), item.metadata.size());
-               return 1;
-       }
+// get_ban_description()
+static int l_get_ban_description(lua_State *L)
+{
+       const char * ip_or_name = luaL_checkstring(L, 1);
+       lua_pushstring(L, get_server(L)->getBanDescription(std::string(ip_or_name)).c_str());
+       return 1;
+}
 
-       // clear(self) -> true
-       static int l_clear(lua_State *L)
+// ban_player()
+static int l_ban_player(lua_State *L)
+{
+       const char * name = luaL_checkstring(L, 1);
+       Player *player = get_env(L)->getPlayer(name);
+       if(player == NULL)
        {
-               LuaItemStack *o = checkobject(L, 1);
-               o->m_stack.clear();
-               lua_pushboolean(L, true);
+               lua_pushboolean(L, false); // no such player
                return 1;
        }
-
-       // replace(self, itemstack or itemstring or table or nil) -> true
-       static int l_replace(lua_State *L)
+       try
        {
-               LuaItemStack *o = checkobject(L, 1);
-               o->m_stack = read_item(L, 2);
-               lua_pushboolean(L, true);
-               return 1;
+               Address addr = get_server(L)->getPeerAddress(get_env(L)->getPlayer(name)->peer_id);
+               std::string ip_str = addr.serializeString();
+               get_server(L)->setIpBanned(ip_str, name);
        }
-
-       // to_string(self) -> string
-       static int l_to_string(lua_State *L)
+       catch(con::PeerNotFoundException) // unlikely
        {
-               LuaItemStack *o = checkobject(L, 1);
-               std::string itemstring = o->m_stack.getItemString();
-               lua_pushstring(L, itemstring.c_str());
+               dstream << __FUNCTION_NAME << ": peer was not found" << std::endl;
+               lua_pushboolean(L, false); // error
                return 1;
        }
+       lua_pushboolean(L, true);
+       return 1;
+}
 
-       // to_table(self) -> table or nil
-       static int l_to_table(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               const ItemStack &item = o->m_stack;
-               if(item.empty())
-               {
-                       lua_pushnil(L);
-               }
-               else
-               {
-                       lua_newtable(L);
-                       lua_pushstring(L, item.name.c_str());
-                       lua_setfield(L, -2, "name");
-                       lua_pushinteger(L, item.count);
-                       lua_setfield(L, -2, "count");
-                       lua_pushinteger(L, item.wear);
-                       lua_setfield(L, -2, "wear");
-                       lua_pushlstring(L, item.metadata.c_str(), item.metadata.size());
-                       lua_setfield(L, -2, "metadata");
-               }
-               return 1;
-       }
+// unban_player_or_ip()
+static int l_unban_player_of_ip(lua_State *L)
+{
+       const char * ip_or_name = luaL_checkstring(L, 1);
+       get_server(L)->unsetIpBanned(ip_or_name);
+       lua_pushboolean(L, true);
+       return 1;
+}
 
-       // get_stack_max(self) -> number
-       static int l_get_stack_max(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               lua_pushinteger(L, item.getStackMax(get_server(L)->idef()));
-               return 1;
-       }
+// show_formspec(playername,formname,formspec)
+static int l_show_formspec(lua_State *L)
+{
+       const char *playername = luaL_checkstring(L, 1);
+       const char *formname = luaL_checkstring(L, 2);
+       const char *formspec = luaL_checkstring(L, 3);
 
-       // get_free_space(self) -> number
-       static int l_get_free_space(lua_State *L)
+       if(get_server(L)->showFormspec(playername,formspec,formname))
        {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               lua_pushinteger(L, item.freeSpace(get_server(L)->idef()));
-               return 1;
+               lua_pushboolean(L, true);
+       }else{
+               lua_pushboolean(L, false);
        }
+       return 1;
+}
 
-       // is_known(self) -> true/false
-       // Checks if the item is defined.
-       static int l_is_known(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               bool is_known = item.isKnown(get_server(L)->idef());
-               lua_pushboolean(L, is_known);
-               return 1;
-       }
+// get_dig_params(groups, tool_capabilities[, time_from_last_punch])
+static int l_get_dig_params(lua_State *L)
+{
+       std::map<std::string, int> groups;
+       read_groups(L, 1, groups);
+       ToolCapabilities tp = read_tool_capabilities(L, 2);
+       if(lua_isnoneornil(L, 3))
+               push_dig_params(L, getDigParams(groups, &tp));
+       else
+               push_dig_params(L, getDigParams(groups, &tp,
+                                       luaL_checknumber(L, 3)));
+       return 1;
+}
 
-       // get_definition(self) -> table
-       // Returns the item definition table from minetest.registered_items,
-       // or a fallback one (name="unknown")
-       static int l_get_definition(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
+// get_hit_params(groups, tool_capabilities[, time_from_last_punch])
+static int l_get_hit_params(lua_State *L)
+{
+       std::map<std::string, int> groups;
+       read_groups(L, 1, groups);
+       ToolCapabilities tp = read_tool_capabilities(L, 2);
+       if(lua_isnoneornil(L, 3))
+               push_hit_params(L, getHitParams(groups, &tp));
+       else
+               push_hit_params(L, getHitParams(groups, &tp,
+                                       luaL_checknumber(L, 3)));
+       return 1;
+}
 
-               // Get minetest.registered_items[name]
-               lua_getglobal(L, "minetest");
-               lua_getfield(L, -1, "registered_items");
-               luaL_checktype(L, -1, LUA_TTABLE);
-               lua_getfield(L, -1, item.name.c_str());
-               if(lua_isnil(L, -1))
-               {
-                       lua_pop(L, 1);
-                       lua_getfield(L, -1, "unknown");
-               }
-               return 1;
-       }
+// get_current_modname()
+static int l_get_current_modname(lua_State *L)
+{
+       lua_getfield(L, LUA_REGISTRYINDEX, "minetest_current_modname");
+       return 1;
+}
 
-       // get_tool_capabilities(self) -> table
-       // Returns the effective tool digging properties.
-       // Returns those of the hand ("") if this item has none associated.
-       static int l_get_tool_capabilities(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               const ToolCapabilities &prop =
-                       item.getToolCapabilities(get_server(L)->idef());
-               push_tool_capabilities(L, prop);
-               return 1;
-       }
-
-       // add_wear(self, amount) -> true/false
-       // The range for "amount" is [0,65535]. Wear is only added if the item
-       // is a tool. Adding wear might destroy the item.
-       // Returns true if the item is (or was) a tool.
-       static int l_add_wear(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               int amount = lua_tointeger(L, 2);
-               bool result = item.addWear(amount, get_server(L)->idef());
-               lua_pushboolean(L, result);
-               return 1;
-       }
-
-       // add_item(self, itemstack or itemstring or table or nil) -> itemstack
-       // Returns leftover item stack
-       static int l_add_item(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               ItemStack newitem = read_item(L, 2);
-               ItemStack leftover = item.addItem(newitem, get_server(L)->idef());
-               create(L, leftover);
-               return 1;
-       }
-
-       // item_fits(self, itemstack or itemstring or table or nil) -> true/false, itemstack
-       // First return value is true iff the new item fits fully into the stack
-       // Second return value is the would-be-left-over item stack
-       static int l_item_fits(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               ItemStack newitem = read_item(L, 2);
-               ItemStack restitem;
-               bool fits = item.itemFits(newitem, &restitem, get_server(L)->idef());
-               lua_pushboolean(L, fits);  // first return value
-               create(L, restitem);       // second return value
-               return 2;
-       }
-
-       // take_item(self, takecount=1) -> itemstack
-       static int l_take_item(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               u32 takecount = 1;
-               if(!lua_isnone(L, 2))
-                       takecount = luaL_checkinteger(L, 2);
-               ItemStack taken = item.takeItem(takecount);
-               create(L, taken);
+// get_modpath(modname)
+static int l_get_modpath(lua_State *L)
+{
+       std::string modname = luaL_checkstring(L, 1);
+       // Do it
+       if(modname == "__builtin"){
+               std::string path = get_server(L)->getBuiltinLuaPath();
+               lua_pushstring(L, path.c_str());
                return 1;
        }
-
-       // peek_item(self, peekcount=1) -> itemstack
-       static int l_peek_item(lua_State *L)
-       {
-               LuaItemStack *o = checkobject(L, 1);
-               ItemStack &item = o->m_stack;
-               u32 peekcount = 1;
-               if(!lua_isnone(L, 2))
-                       peekcount = lua_tointeger(L, 2);
-               ItemStack peekaboo = item.peekItem(peekcount);
-               create(L, peekaboo);
+       const ModSpec *mod = get_server(L)->getModSpec(modname);
+       if(!mod){
+               lua_pushnil(L);
                return 1;
        }
+       lua_pushstring(L, mod->path.c_str());
+       return 1;
+}
 
-public:
-       LuaItemStack(const ItemStack &item):
-               m_stack(item)
-       {
-       }
-
-       ~LuaItemStack()
-       {
-       }
+// get_modnames()
+// the returned list is sorted alphabetically for you
+static int l_get_modnames(lua_State *L)
+{
+       // Get a list of mods
+       std::list<std::string> mods_unsorted, mods_sorted;
+       get_server(L)->getModNames(mods_unsorted);
 
-       const ItemStack& getItem() const
-       {
-               return m_stack;
-       }
-       ItemStack& getItem()
+       // Take unsorted items from mods_unsorted and sort them into
+       // mods_sorted; not great performance but the number of mods on a
+       // server will likely be small.
+       for(std::list<std::string>::iterator i = mods_unsorted.begin();
+           i != mods_unsorted.end(); ++i)
        {
-               return m_stack;
+               bool added = false;
+               for(std::list<std::string>::iterator x = mods_sorted.begin();
+                   x != mods_sorted.end(); ++x)
+               {
+                       // I doubt anybody using Minetest will be using
+                       // anything not ASCII based :)
+                       if((*i).compare(*x) <= 0)
+                       {
+                               mods_sorted.insert(x, *i);
+                               added = true;
+                               break;
+                       }
+               }
+               if(!added)
+                       mods_sorted.push_back(*i);
        }
 
-       // LuaItemStack(itemstack or itemstring or table or nil)
-       // Creates an LuaItemStack and leaves it on top of stack
-       static int create_object(lua_State *L)
-       {
-               ItemStack item = read_item(L, 1);
-               LuaItemStack *o = new LuaItemStack(item);
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
-               luaL_getmetatable(L, className);
-               lua_setmetatable(L, -2);
-               return 1;
-       }
-       // Not callable from Lua
-       static int create(lua_State *L, const ItemStack &item)
-       {
-               LuaItemStack *o = new LuaItemStack(item);
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
-               luaL_getmetatable(L, className);
-               lua_setmetatable(L, -2);
-               return 1;
-       }
+       // Get the table insertion function from Lua.
+       lua_getglobal(L, "table");
+       lua_getfield(L, -1, "insert");
+       int insertion_func = lua_gettop(L);
 
-       static LuaItemStack* checkobject(lua_State *L, int narg)
+       // Package them up for Lua
+       lua_newtable(L);
+       int new_table = lua_gettop(L);
+       std::list<std::string>::iterator i = mods_sorted.begin();
+       while(i != mods_sorted.end())
        {
-               luaL_checktype(L, narg, LUA_TUSERDATA);
-               void *ud = luaL_checkudata(L, narg, className);
-               if(!ud) luaL_typerror(L, narg, className);
-               return *(LuaItemStack**)ud;  // unbox pointer
+               lua_pushvalue(L, insertion_func);
+               lua_pushvalue(L, new_table);
+               lua_pushstring(L, (*i).c_str());
+               if(lua_pcall(L, 2, 0, 0) != 0)
+               {
+                       script_error(L, "error: %s", lua_tostring(L, -1));
+               }
+               ++i;
        }
+       return 1;
+}
 
-       static void Register(lua_State *L)
-       {
-               lua_newtable(L);
-               int methodtable = lua_gettop(L);
-               luaL_newmetatable(L, className);
-               int metatable = lua_gettop(L);
-
-               lua_pushliteral(L, "__metatable");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);  // hide metatable from Lua getmetatable()
-
-               lua_pushliteral(L, "__index");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);
-
-               lua_pushliteral(L, "__gc");
-               lua_pushcfunction(L, gc_object);
-               lua_settable(L, metatable);
-
-               lua_pop(L, 1);  // drop metatable
+// get_worldpath()
+static int l_get_worldpath(lua_State *L)
+{
+       std::string worldpath = get_server(L)->getWorldPath();
+       lua_pushstring(L, worldpath.c_str());
+       return 1;
+}
 
-               luaL_openlib(L, 0, methods, 0);  // fill methodtable
-               lua_pop(L, 1);  // drop methodtable
+// sound_play(spec, parameters)
+static int l_sound_play(lua_State *L)
+{
+       SimpleSoundSpec spec;
+       read_soundspec(L, 1, spec);
+       ServerSoundParams params;
+       read_server_sound_params(L, 2, params);
+       s32 handle = get_server(L)->playSound(spec, params);
+       lua_pushinteger(L, handle);
+       return 1;
+}
 
-               // Can be created from Lua (LuaItemStack(itemstack or itemstring or table or nil))
-               lua_register(L, className, create_object);
-       }
-};
-const char LuaItemStack::className[] = "ItemStack";
-const luaL_reg LuaItemStack::methods[] = {
-       method(LuaItemStack, is_empty),
-       method(LuaItemStack, get_name),
-       method(LuaItemStack, get_count),
-       method(LuaItemStack, get_wear),
-       method(LuaItemStack, get_metadata),
-       method(LuaItemStack, clear),
-       method(LuaItemStack, replace),
-       method(LuaItemStack, to_string),
-       method(LuaItemStack, to_table),
-       method(LuaItemStack, get_stack_max),
-       method(LuaItemStack, get_free_space),
-       method(LuaItemStack, is_known),
-       method(LuaItemStack, get_definition),
-       method(LuaItemStack, get_tool_capabilities),
-       method(LuaItemStack, add_wear),
-       method(LuaItemStack, add_item),
-       method(LuaItemStack, item_fits),
-       method(LuaItemStack, take_item),
-       method(LuaItemStack, peek_item),
-       {0,0}
-};
+// sound_stop(handle)
+static int l_sound_stop(lua_State *L)
+{
+       int handle = luaL_checkinteger(L, 1);
+       get_server(L)->stopSound(handle);
+       return 0;
+}
 
-static ItemStack read_item(lua_State *L, int index)
+// is_singleplayer()
+static int l_is_singleplayer(lua_State *L)
 {
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
+       lua_pushboolean(L, get_server(L)->isSingleplayer());
+       return 1;
+}
 
-       if(lua_isnil(L, index))
-       {
-               return ItemStack();
-       }
-       else if(lua_isuserdata(L, index))
-       {
-               // Convert from LuaItemStack
-               LuaItemStack *o = LuaItemStack::checkobject(L, index);
-               return o->getItem();
-       }
-       else if(lua_isstring(L, index))
-       {
-               // Convert from itemstring
-               std::string itemstring = lua_tostring(L, index);
-               IItemDefManager *idef = get_server(L)->idef();
-               try
-               {
-                       ItemStack item;
-                       item.deSerialize(itemstring, idef);
-                       return item;
-               }
-               catch(SerializationError &e)
-               {
-                       infostream<<"WARNING: unable to create item from itemstring"
-                                       <<": "<<itemstring<<std::endl;
-                       return ItemStack();
-               }
-       }
-       else if(lua_istable(L, index))
-       {
-               // Convert from table
-               IItemDefManager *idef = get_server(L)->idef();
-               std::string name = getstringfield_default(L, index, "name", "");
-               int count = getintfield_default(L, index, "count", 1);
-               int wear = getintfield_default(L, index, "wear", 0);
-               std::string metadata = getstringfield_default(L, index, "metadata", "");
-               return ItemStack(name, count, wear, metadata, idef);
-       }
-       else
-       {
-               throw LuaError(L, "Expecting itemstack, itemstring, table or nil");
-       }
+// get_password_hash(name, raw_password)
+static int l_get_password_hash(lua_State *L)
+{
+       std::string name = luaL_checkstring(L, 1);
+       std::string raw_password = luaL_checkstring(L, 2);
+       std::string hash = translatePassword(name,
+                       narrow_to_wide(raw_password));
+       lua_pushstring(L, hash.c_str());
+       return 1;
 }
 
-static std::vector<ItemStack> read_items(lua_State *L, int index)
+// notify_authentication_modified(name)
+static int l_notify_authentication_modified(lua_State *L)
 {
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
+       std::string name = "";
+       if(lua_isstring(L, 1))
+               name = lua_tostring(L, 1);
+       get_server(L)->reportPrivsModified(name);
+       return 0;
+}
 
-       std::vector<ItemStack> items;
-       luaL_checktype(L, index, LUA_TTABLE);
-       lua_pushnil(L);
-       while(lua_next(L, index) != 0){
-               // key at index -2 and value at index -1
-               items.push_back(read_item(L, -1));
-               // removes value, keeps key for next iteration
-               lua_pop(L, 1);
-       }
-       return items;
+// rollback_get_last_node_actor(p, range, seconds) -> actor, p, seconds
+static int l_rollback_get_last_node_actor(lua_State *L)
+{
+       v3s16 p = read_v3s16(L, 1);
+       int range = luaL_checknumber(L, 2);
+       int seconds = luaL_checknumber(L, 3);
+       Server *server = get_server(L);
+       IRollbackManager *rollback = server->getRollbackManager();
+       v3s16 act_p;
+       int act_seconds = 0;
+       std::string actor = rollback->getLastNodeActor(p, range, seconds, &act_p, &act_seconds);
+       lua_pushstring(L, actor.c_str());
+       push_v3s16(L, act_p);
+       lua_pushnumber(L, act_seconds);
+       return 3;
 }
 
-// creates a table of ItemStacks
-static void push_items(lua_State *L, const std::vector<ItemStack> &items)
+// rollback_revert_actions_by(actor, seconds) -> bool, log messages
+static int l_rollback_revert_actions_by(lua_State *L)
 {
-       // Get the table insert function
+       std::string actor = luaL_checkstring(L, 1);
+       int seconds = luaL_checknumber(L, 2);
+       Server *server = get_server(L);
+       IRollbackManager *rollback = server->getRollbackManager();
+       std::list<RollbackAction> actions = rollback->getRevertActions(actor, seconds);
+       std::list<std::string> log;
+       bool success = server->rollbackRevertActions(actions, &log);
+       // Push boolean result
+       lua_pushboolean(L, success);
+       // Get the table insert function and push the log table
        lua_getglobal(L, "table");
        lua_getfield(L, -1, "insert");
        int table_insert = lua_gettop(L);
-       // Create and fill table
        lua_newtable(L);
        int table = lua_gettop(L);
-       for(u32 i=0; i<items.size(); i++){
-               ItemStack item = items[i];
+       for(std::list<std::string>::const_iterator i = log.begin();
+                       i != log.end(); i++)
+       {
                lua_pushvalue(L, table_insert);
                lua_pushvalue(L, table);
-               LuaItemStack::create(L, item);
+               lua_pushstring(L, i->c_str());
                if(lua_pcall(L, 2, 0, 0))
                        script_error(L, "error: %s", lua_tostring(L, -1));
        }
        lua_remove(L, -2); // Remove table
        lua_remove(L, -2); // Remove insert
+       return 2;
 }
 
+static const struct luaL_Reg minetest_f [] = {
+       {"debug", l_debug},
+       {"log", l_log},
+       {"request_shutdown", l_request_shutdown},
+       {"get_server_status", l_get_server_status},
+       {"register_item_raw", l_register_item_raw},
+       {"register_alias_raw", l_register_alias_raw},
+       {"register_craft", l_register_craft},
+       {"register_biome", l_register_biome},
+       {"register_ore", l_register_ore},
+       {"setting_set", l_setting_set},
+       {"setting_get", l_setting_get},
+       {"setting_getbool", l_setting_getbool},
+       {"setting_save",l_setting_save},
+       {"chat_send_all", l_chat_send_all},
+       {"chat_send_player", l_chat_send_player},
+       {"get_player_privs", l_get_player_privs},
+       {"get_player_ip", l_get_player_ip},
+       {"get_ban_list", l_get_ban_list},
+       {"get_ban_description", l_get_ban_description},
+       {"ban_player", l_ban_player},
+       {"unban_player_or_ip", l_unban_player_of_ip},
+       {"get_inventory", l_get_inventory},
+       {"create_detached_inventory_raw", l_create_detached_inventory_raw},
+       {"show_formspec", l_show_formspec},
+       {"get_dig_params", l_get_dig_params},
+       {"get_hit_params", l_get_hit_params},
+       {"get_current_modname", l_get_current_modname},
+       {"get_modpath", l_get_modpath},
+       {"get_modnames", l_get_modnames},
+       {"get_worldpath", l_get_worldpath},
+       {"sound_play", l_sound_play},
+       {"sound_stop", l_sound_stop},
+       {"is_singleplayer", l_is_singleplayer},
+       {"get_password_hash", l_get_password_hash},
+       {"notify_authentication_modified", l_notify_authentication_modified},
+       {"get_craft_result", l_get_craft_result},
+       {"get_craft_recipe", l_get_craft_recipe},
+       {"get_all_craft_recipes", l_get_all_craft_recipes},
+       {"rollback_get_last_node_actor", l_rollback_get_last_node_actor},
+       {"rollback_revert_actions_by", l_rollback_revert_actions_by},
+       {"add_particle", l_add_particle},
+       {"add_particlespawner", l_add_particlespawner},
+       {"delete_particlespawner", l_delete_particlespawner},
+       {NULL, NULL}
+};
+
+
 /*
-       InvRef
+       Main export function
 */
 
-class InvRef
+void scriptapi_export(lua_State *L, Server *server)
 {
-private:
-       InventoryLocation m_loc;
+       realitycheck(L);
+       assert(lua_checkstack(L, 20));
+       verbosestream<<"scriptapi_export()"<<std::endl;
+       StackUnroller stack_unroller(L);
 
-       static const char className[];
-       static const luaL_reg methods[];
+       // Store server as light userdata in registry
+       lua_pushlightuserdata(L, server);
+       lua_setfield(L, LUA_REGISTRYINDEX, "minetest_server");
 
-       static InvRef *checkobject(lua_State *L, int narg)
-       {
-               luaL_checktype(L, narg, LUA_TUSERDATA);
-               void *ud = luaL_checkudata(L, narg, className);
-               if(!ud) luaL_typerror(L, narg, className);
-               return *(InvRef**)ud;  // unbox pointer
-       }
+       // Register global functions in table minetest
+       lua_newtable(L);
+       luaL_register(L, NULL, minetest_f);
+       lua_setglobal(L, "minetest");
 
-       static Inventory* getinv(lua_State *L, InvRef *ref)
-       {
-               return get_server(L)->getInventory(ref->m_loc);
-       }
+       // Get the main minetest table
+       lua_getglobal(L, "minetest");
 
-       static InventoryList* getlist(lua_State *L, InvRef *ref,
-                       const char *listname)
-       {
-               Inventory *inv = getinv(L, ref);
-               if(!inv)
-                       return NULL;
-               return inv->getList(listname);
-       }
-
-       static void reportInventoryChange(lua_State *L, InvRef *ref)
-       {
-               // Inform other things that the inventory has changed
-               get_server(L)->setInventoryModified(ref->m_loc);
-       }
-
-       // Exported functions
-
-       // garbage collector
-       static int gc_object(lua_State *L) {
-               InvRef *o = *(InvRef **)(lua_touserdata(L, 1));
-               delete o;
-               return 0;
-       }
-
-       // is_empty(self, listname) -> true/false
-       static int l_is_empty(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               InventoryList *list = getlist(L, ref, listname);
-               if(list && list->getUsedSlots() > 0){
-                       lua_pushboolean(L, false);
-               } else {
-                       lua_pushboolean(L, true);
-               }
-               return 1;
-       }
-
-       // get_size(self, listname)
-       static int l_get_size(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               InventoryList *list = getlist(L, ref, listname);
-               if(list){
-                       lua_pushinteger(L, list->getSize());
-               } else {
-                       lua_pushinteger(L, 0);
-               }
-               return 1;
-       }
-
-       // get_width(self, listname)
-       static int l_get_width(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               InventoryList *list = getlist(L, ref, listname);
-               if(list){
-                       lua_pushinteger(L, list->getWidth());
-               } else {
-                       lua_pushinteger(L, 0);
-               }
-               return 1;
-       }
-
-       // set_size(self, listname, size)
-       static int l_set_size(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               int newsize = luaL_checknumber(L, 3);
-               Inventory *inv = getinv(L, ref);
-               if(newsize == 0){
-                       inv->deleteList(listname);
-                       reportInventoryChange(L, ref);
-                       return 0;
-               }
-               InventoryList *list = inv->getList(listname);
-               if(list){
-                       list->setSize(newsize);
-               } else {
-                       list = inv->addList(listname, newsize);
-               }
-               reportInventoryChange(L, ref);
-               return 0;
-       }
-
-       // set_width(self, listname, size)
-       static int l_set_width(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               int newwidth = luaL_checknumber(L, 3);
-               Inventory *inv = getinv(L, ref);
-               InventoryList *list = inv->getList(listname);
-               if(list){
-                       list->setWidth(newwidth);
-               } else {
-                       return 0;
-               }
-               reportInventoryChange(L, ref);
-               return 0;
-       }
-
-       // get_stack(self, listname, i) -> itemstack
-       static int l_get_stack(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               int i = luaL_checknumber(L, 3) - 1;
-               InventoryList *list = getlist(L, ref, listname);
-               ItemStack item;
-               if(list != NULL && i >= 0 && i < (int) list->getSize())
-                       item = list->getItem(i);
-               LuaItemStack::create(L, item);
-               return 1;
-       }
-
-       // set_stack(self, listname, i, stack) -> true/false
-       static int l_set_stack(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               int i = luaL_checknumber(L, 3) - 1;
-               ItemStack newitem = read_item(L, 4);
-               InventoryList *list = getlist(L, ref, listname);
-               if(list != NULL && i >= 0 && i < (int) list->getSize()){
-                       list->changeItem(i, newitem);
-                       reportInventoryChange(L, ref);
-                       lua_pushboolean(L, true);
-               } else {
-                       lua_pushboolean(L, false);
-               }
-               return 1;
-       }
-
-       // get_list(self, listname) -> list or nil
-       static int l_get_list(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               Inventory *inv = getinv(L, ref);
-               inventory_get_list_to_lua(inv, listname, L);
-               return 1;
-       }
-
-       // set_list(self, listname, list)
-       static int l_set_list(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               Inventory *inv = getinv(L, ref);
-               InventoryList *list = inv->getList(listname);
-               if(list)
-                       inventory_set_list_from_lua(inv, listname, L, 3,
-                                       list->getSize());
-               else
-                       inventory_set_list_from_lua(inv, listname, L, 3);
-               reportInventoryChange(L, ref);
-               return 0;
-       }
-
-       // add_item(self, listname, itemstack or itemstring or table or nil) -> itemstack
-       // Returns the leftover stack
-       static int l_add_item(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               ItemStack item = read_item(L, 3);
-               InventoryList *list = getlist(L, ref, listname);
-               if(list){
-                       ItemStack leftover = list->addItem(item);
-                       if(leftover.count != item.count)
-                               reportInventoryChange(L, ref);
-                       LuaItemStack::create(L, leftover);
-               } else {
-                       LuaItemStack::create(L, item);
-               }
-               return 1;
-       }
-
-       // room_for_item(self, listname, itemstack or itemstring or table or nil) -> true/false
-       // Returns true if the item completely fits into the list
-       static int l_room_for_item(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               ItemStack item = read_item(L, 3);
-               InventoryList *list = getlist(L, ref, listname);
-               if(list){
-                       lua_pushboolean(L, list->roomForItem(item));
-               } else {
-                       lua_pushboolean(L, false);
-               }
-               return 1;
-       }
-
-       // contains_item(self, listname, itemstack or itemstring or table or nil) -> true/false
-       // Returns true if the list contains the given count of the given item name
-       static int l_contains_item(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               ItemStack item = read_item(L, 3);
-               InventoryList *list = getlist(L, ref, listname);
-               if(list){
-                       lua_pushboolean(L, list->containsItem(item));
-               } else {
-                       lua_pushboolean(L, false);
-               }
-               return 1;
-       }
-
-       // remove_item(self, listname, itemstack or itemstring or table or nil) -> itemstack
-       // Returns the items that were actually removed
-       static int l_remove_item(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const char *listname = luaL_checkstring(L, 2);
-               ItemStack item = read_item(L, 3);
-               InventoryList *list = getlist(L, ref, listname);
-               if(list){
-                       ItemStack removed = list->removeItem(item);
-                       if(!removed.empty())
-                               reportInventoryChange(L, ref);
-                       LuaItemStack::create(L, removed);
-               } else {
-                       LuaItemStack::create(L, ItemStack());
-               }
-               return 1;
-       }
-
-       // get_location() -> location (like minetest.get_inventory(location))
-       static int l_get_location(lua_State *L)
-       {
-               InvRef *ref = checkobject(L, 1);
-               const InventoryLocation &loc = ref->m_loc;
-               switch(loc.type){
-               case InventoryLocation::PLAYER:
-                       lua_newtable(L);
-                       lua_pushstring(L, "player");
-                       lua_setfield(L, -2, "type");
-                       lua_pushstring(L, loc.name.c_str());
-                       lua_setfield(L, -2, "name");
-                       return 1;
-               case InventoryLocation::NODEMETA:
-                       lua_newtable(L);
-                       lua_pushstring(L, "nodemeta");
-                       lua_setfield(L, -2, "type");
-                       push_v3s16(L, loc.p);
-                       lua_setfield(L, -2, "name");
-                       return 1;
-               case InventoryLocation::DETACHED:
-                       lua_newtable(L);
-                       lua_pushstring(L, "detached");
-                       lua_setfield(L, -2, "type");
-                       lua_pushstring(L, loc.name.c_str());
-                       lua_setfield(L, -2, "name");
-                       return 1;
-               case InventoryLocation::UNDEFINED:
-               case InventoryLocation::CURRENT_PLAYER:
-                       break;
-               }
-               lua_newtable(L);
-               lua_pushstring(L, "undefined");
-               lua_setfield(L, -2, "type");
-               return 1;
-       }
-
-public:
-       InvRef(const InventoryLocation &loc):
-               m_loc(loc)
-       {
-       }
-
-       ~InvRef()
-       {
-       }
-
-       // Creates an InvRef and leaves it on top of stack
-       // Not callable from Lua; all references are created on the C side.
-       static void create(lua_State *L, const InventoryLocation &loc)
-       {
-               InvRef *o = new InvRef(loc);
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
-               luaL_getmetatable(L, className);
-               lua_setmetatable(L, -2);
-       }
-       static void createPlayer(lua_State *L, Player *player)
-       {
-               InventoryLocation loc;
-               loc.setPlayer(player->getName());
-               create(L, loc);
-       }
-       static void createNodeMeta(lua_State *L, v3s16 p)
-       {
-               InventoryLocation loc;
-               loc.setNodeMeta(p);
-               create(L, loc);
-       }
-
-       static void Register(lua_State *L)
-       {
-               lua_newtable(L);
-               int methodtable = lua_gettop(L);
-               luaL_newmetatable(L, className);
-               int metatable = lua_gettop(L);
-
-               lua_pushliteral(L, "__metatable");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);  // hide metatable from Lua getmetatable()
-
-               lua_pushliteral(L, "__index");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);
-
-               lua_pushliteral(L, "__gc");
-               lua_pushcfunction(L, gc_object);
-               lua_settable(L, metatable);
-
-               lua_pop(L, 1);  // drop metatable
-
-               luaL_openlib(L, 0, methods, 0);  // fill methodtable
-               lua_pop(L, 1);  // drop methodtable
-
-               // Cannot be created from Lua
-               //lua_register(L, className, create_object);
-       }
-};
-const char InvRef::className[] = "InvRef";
-const luaL_reg InvRef::methods[] = {
-       method(InvRef, is_empty),
-       method(InvRef, get_size),
-       method(InvRef, set_size),
-       method(InvRef, get_width),
-       method(InvRef, set_width),
-       method(InvRef, get_stack),
-       method(InvRef, set_stack),
-       method(InvRef, get_list),
-       method(InvRef, set_list),
-       method(InvRef, add_item),
-       method(InvRef, room_for_item),
-       method(InvRef, contains_item),
-       method(InvRef, remove_item),
-       method(InvRef, get_location),
-       {0,0}
-};
-
-/*
-       NodeMetaRef
-*/
-
-class NodeMetaRef
-{
-private:
-       v3s16 m_p;
-       ServerEnvironment *m_env;
-
-       static const char className[];
-       static const luaL_reg methods[];
-
-       static NodeMetaRef *checkobject(lua_State *L, int narg)
-       {
-               luaL_checktype(L, narg, LUA_TUSERDATA);
-               void *ud = luaL_checkudata(L, narg, className);
-               if(!ud) luaL_typerror(L, narg, className);
-               return *(NodeMetaRef**)ud;  // unbox pointer
-       }
-
-       static NodeMetadata* getmeta(NodeMetaRef *ref, bool auto_create)
-       {
-               NodeMetadata *meta = ref->m_env->getMap().getNodeMetadata(ref->m_p);
-               if(meta == NULL && auto_create)
-               {
-                       meta = new NodeMetadata(ref->m_env->getGameDef());
-                       ref->m_env->getMap().setNodeMetadata(ref->m_p, meta);
-               }
-               return meta;
-       }
-
-       static void reportMetadataChange(NodeMetaRef *ref)
-       {
-               // NOTE: This same code is in rollback_interface.cpp
-               // Inform other things that the metadata has changed
-               v3s16 blockpos = getNodeBlockPos(ref->m_p);
-               MapEditEvent event;
-               event.type = MEET_BLOCK_NODE_METADATA_CHANGED;
-               event.p = blockpos;
-               ref->m_env->getMap().dispatchEvent(&event);
-               // Set the block to be saved
-               MapBlock *block = ref->m_env->getMap().getBlockNoCreateNoEx(blockpos);
-               if(block)
-                       block->raiseModified(MOD_STATE_WRITE_NEEDED,
-                                       "NodeMetaRef::reportMetadataChange");
-       }
-
-       // Exported functions
-
-       // garbage collector
-       static int gc_object(lua_State *L) {
-               NodeMetaRef *o = *(NodeMetaRef **)(lua_touserdata(L, 1));
-               delete o;
-               return 0;
-       }
-
-       // get_string(self, name)
-       static int l_get_string(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               std::string name = luaL_checkstring(L, 2);
-
-               NodeMetadata *meta = getmeta(ref, false);
-               if(meta == NULL){
-                       lua_pushlstring(L, "", 0);
-                       return 1;
-               }
-               std::string str = meta->getString(name);
-               lua_pushlstring(L, str.c_str(), str.size());
-               return 1;
-       }
-
-       // set_string(self, name, var)
-       static int l_set_string(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               std::string name = luaL_checkstring(L, 2);
-               size_t len = 0;
-               const char *s = lua_tolstring(L, 3, &len);
-               std::string str(s, len);
-
-               NodeMetadata *meta = getmeta(ref, !str.empty());
-               if(meta == NULL || str == meta->getString(name))
-                       return 0;
-               meta->setString(name, str);
-               reportMetadataChange(ref);
-               return 0;
-       }
-
-       // get_int(self, name)
-       static int l_get_int(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               std::string name = lua_tostring(L, 2);
-
-               NodeMetadata *meta = getmeta(ref, false);
-               if(meta == NULL){
-                       lua_pushnumber(L, 0);
-                       return 1;
-               }
-               std::string str = meta->getString(name);
-               lua_pushnumber(L, stoi(str));
-               return 1;
-       }
-
-       // set_int(self, name, var)
-       static int l_set_int(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               std::string name = lua_tostring(L, 2);
-               int a = lua_tointeger(L, 3);
-               std::string str = itos(a);
-
-               NodeMetadata *meta = getmeta(ref, true);
-               if(meta == NULL || str == meta->getString(name))
-                       return 0;
-               meta->setString(name, str);
-               reportMetadataChange(ref);
-               return 0;
-       }
-
-       // get_float(self, name)
-       static int l_get_float(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               std::string name = lua_tostring(L, 2);
-
-               NodeMetadata *meta = getmeta(ref, false);
-               if(meta == NULL){
-                       lua_pushnumber(L, 0);
-                       return 1;
-               }
-               std::string str = meta->getString(name);
-               lua_pushnumber(L, stof(str));
-               return 1;
-       }
-
-       // set_float(self, name, var)
-       static int l_set_float(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               std::string name = lua_tostring(L, 2);
-               float a = lua_tonumber(L, 3);
-               std::string str = ftos(a);
-
-               NodeMetadata *meta = getmeta(ref, true);
-               if(meta == NULL || str == meta->getString(name))
-                       return 0;
-               meta->setString(name, str);
-               reportMetadataChange(ref);
-               return 0;
-       }
-
-       // get_inventory(self)
-       static int l_get_inventory(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               getmeta(ref, true);  // try to ensure the metadata exists
-               InvRef::createNodeMeta(L, ref->m_p);
-               return 1;
-       }
-
-       // to_table(self)
-       static int l_to_table(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-
-               NodeMetadata *meta = getmeta(ref, true);
-               if(meta == NULL){
-                       lua_pushnil(L);
-                       return 1;
-               }
-               lua_newtable(L);
-               // fields
-               lua_newtable(L);
-               {
-                       std::map<std::string, std::string> fields = meta->getStrings();
-                       for(std::map<std::string, std::string>::const_iterator
-                                       i = fields.begin(); i != fields.end(); i++){
-                               const std::string &name = i->first;
-                               const std::string &value = i->second;
-                               lua_pushlstring(L, name.c_str(), name.size());
-                               lua_pushlstring(L, value.c_str(), value.size());
-                               lua_settable(L, -3);
-                       }
-               }
-               lua_setfield(L, -2, "fields");
-               // inventory
-               lua_newtable(L);
-               Inventory *inv = meta->getInventory();
-               if(inv){
-                       std::vector<const InventoryList*> lists = inv->getLists();
-                       for(std::vector<const InventoryList*>::const_iterator
-                                       i = lists.begin(); i != lists.end(); i++){
-                               inventory_get_list_to_lua(inv, (*i)->getName().c_str(), L);
-                               lua_setfield(L, -2, (*i)->getName().c_str());
-                       }
-               }
-               lua_setfield(L, -2, "inventory");
-               return 1;
-       }
-
-       // from_table(self, table)
-       static int l_from_table(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               int base = 2;
-
-               if(lua_isnil(L, base)){
-                       // No metadata
-                       ref->m_env->getMap().removeNodeMetadata(ref->m_p);
-                       lua_pushboolean(L, true);
-                       return 1;
-               }
-
-               // Has metadata; clear old one first
-               ref->m_env->getMap().removeNodeMetadata(ref->m_p);
-               // Create new metadata
-               NodeMetadata *meta = getmeta(ref, true);
-               // Set fields
-               lua_getfield(L, base, "fields");
-               int fieldstable = lua_gettop(L);
-               lua_pushnil(L);
-               while(lua_next(L, fieldstable) != 0){
-                       // key at index -2 and value at index -1
-                       std::string name = lua_tostring(L, -2);
-                       size_t cl;
-                       const char *cs = lua_tolstring(L, -1, &cl);
-                       std::string value(cs, cl);
-                       meta->setString(name, value);
-                       lua_pop(L, 1); // removes value, keeps key for next iteration
-               }
-               // Set inventory
-               Inventory *inv = meta->getInventory();
-               lua_getfield(L, base, "inventory");
-               int inventorytable = lua_gettop(L);
-               lua_pushnil(L);
-               while(lua_next(L, inventorytable) != 0){
-                       // key at index -2 and value at index -1
-                       std::string name = lua_tostring(L, -2);
-                       inventory_set_list_from_lua(inv, name.c_str(), L, -1);
-                       lua_pop(L, 1); // removes value, keeps key for next iteration
-               }
-               reportMetadataChange(ref);
-               lua_pushboolean(L, true);
-               return 1;
-       }
-
-public:
-       NodeMetaRef(v3s16 p, ServerEnvironment *env):
-               m_p(p),
-               m_env(env)
-       {
-       }
-
-       ~NodeMetaRef()
-       {
-       }
-
-       // Creates an NodeMetaRef and leaves it on top of stack
-       // Not callable from Lua; all references are created on the C side.
-       static void create(lua_State *L, v3s16 p, ServerEnvironment *env)
-       {
-               NodeMetaRef *o = new NodeMetaRef(p, env);
-               //infostream<<"NodeMetaRef::create: o="<<o<<std::endl;
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
-               luaL_getmetatable(L, className);
-               lua_setmetatable(L, -2);
-       }
-
-       static void Register(lua_State *L)
-       {
-               lua_newtable(L);
-               int methodtable = lua_gettop(L);
-               luaL_newmetatable(L, className);
-               int metatable = lua_gettop(L);
-
-               lua_pushliteral(L, "__metatable");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);  // hide metatable from Lua getmetatable()
-
-               lua_pushliteral(L, "__index");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);
-
-               lua_pushliteral(L, "__gc");
-               lua_pushcfunction(L, gc_object);
-               lua_settable(L, metatable);
-
-               lua_pop(L, 1);  // drop metatable
-
-               luaL_openlib(L, 0, methods, 0);  // fill methodtable
-               lua_pop(L, 1);  // drop methodtable
-
-               // Cannot be created from Lua
-               //lua_register(L, className, create_object);
-       }
-};
-const char NodeMetaRef::className[] = "NodeMetaRef";
-const luaL_reg NodeMetaRef::methods[] = {
-       method(NodeMetaRef, get_string),
-       method(NodeMetaRef, set_string),
-       method(NodeMetaRef, get_int),
-       method(NodeMetaRef, set_int),
-       method(NodeMetaRef, get_float),
-       method(NodeMetaRef, set_float),
-       method(NodeMetaRef, get_inventory),
-       method(NodeMetaRef, to_table),
-       method(NodeMetaRef, from_table),
-       {0,0}
-};
-
-/*
-       ObjectRef
-*/
-
-class ObjectRef
-{
-private:
-       ServerActiveObject *m_object;
-
-       static const char className[];
-       static const luaL_reg methods[];
-public:
-       static ObjectRef *checkobject(lua_State *L, int narg)
-       {
-               luaL_checktype(L, narg, LUA_TUSERDATA);
-               void *ud = luaL_checkudata(L, narg, className);
-               if(!ud) luaL_typerror(L, narg, className);
-               return *(ObjectRef**)ud;  // unbox pointer
-       }
-
-       static ServerActiveObject* getobject(ObjectRef *ref)
-       {
-               ServerActiveObject *co = ref->m_object;
-               return co;
-       }
-private:
-       static LuaEntitySAO* getluaobject(ObjectRef *ref)
-       {
-               ServerActiveObject *obj = getobject(ref);
-               if(obj == NULL)
-                       return NULL;
-               if(obj->getType() != ACTIVEOBJECT_TYPE_LUAENTITY)
-                       return NULL;
-               return (LuaEntitySAO*)obj;
-       }
-
-       static PlayerSAO* getplayersao(ObjectRef *ref)
-       {
-               ServerActiveObject *obj = getobject(ref);
-               if(obj == NULL)
-                       return NULL;
-               if(obj->getType() != ACTIVEOBJECT_TYPE_PLAYER)
-                       return NULL;
-               return (PlayerSAO*)obj;
-       }
-
-       static Player* getplayer(ObjectRef *ref)
-       {
-               PlayerSAO *playersao = getplayersao(ref);
-               if(playersao == NULL)
-                       return NULL;
-               return playersao->getPlayer();
-       }
-
-       // Exported functions
-
-       // garbage collector
-       static int gc_object(lua_State *L) {
-               ObjectRef *o = *(ObjectRef **)(lua_touserdata(L, 1));
-               //infostream<<"ObjectRef::gc_object: o="<<o<<std::endl;
-               delete o;
-               return 0;
-       }
-
-       // remove(self)
-       static int l_remove(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               verbosestream<<"ObjectRef::l_remove(): id="<<co->getId()<<std::endl;
-               co->m_removed = true;
-               return 0;
-       }
-
-       // getpos(self)
-       // returns: {x=num, y=num, z=num}
-       static int l_getpos(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               v3f pos = co->getBasePosition() / BS;
-               lua_newtable(L);
-               lua_pushnumber(L, pos.X);
-               lua_setfield(L, -2, "x");
-               lua_pushnumber(L, pos.Y);
-               lua_setfield(L, -2, "y");
-               lua_pushnumber(L, pos.Z);
-               lua_setfield(L, -2, "z");
-               return 1;
-       }
-
-       // setpos(self, pos)
-       static int l_setpos(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               //LuaEntitySAO *co = getluaobject(ref);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               // pos
-               v3f pos = checkFloatPos(L, 2);
-               // Do it
-               co->setPos(pos);
-               return 0;
-       }
-
-       // moveto(self, pos, continuous=false)
-       static int l_moveto(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               //LuaEntitySAO *co = getluaobject(ref);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               // pos
-               v3f pos = checkFloatPos(L, 2);
-               // continuous
-               bool continuous = lua_toboolean(L, 3);
-               // Do it
-               co->moveTo(pos, continuous);
-               return 0;
-       }
-
-       // punch(self, puncher, time_from_last_punch, tool_capabilities, dir)
-       static int l_punch(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ObjectRef *puncher_ref = checkobject(L, 2);
-               ServerActiveObject *co = getobject(ref);
-               ServerActiveObject *puncher = getobject(puncher_ref);
-               if(co == NULL) return 0;
-               if(puncher == NULL) return 0;
-               v3f dir;
-               if(lua_type(L, 5) != LUA_TTABLE)
-                       dir = co->getBasePosition() - puncher->getBasePosition();
-               else
-                       dir = read_v3f(L, 5);
-               float time_from_last_punch = 1000000;
-               if(lua_isnumber(L, 3))
-                       time_from_last_punch = lua_tonumber(L, 3);
-               ToolCapabilities toolcap = read_tool_capabilities(L, 4);
-               dir.normalize();
-               // Do it
-               co->punch(dir, &toolcap, puncher, time_from_last_punch);
-               return 0;
-       }
-
-       // right_click(self, clicker); clicker = an another ObjectRef
-       static int l_right_click(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ObjectRef *ref2 = checkobject(L, 2);
-               ServerActiveObject *co = getobject(ref);
-               ServerActiveObject *co2 = getobject(ref2);
-               if(co == NULL) return 0;
-               if(co2 == NULL) return 0;
-               // Do it
-               co->rightClick(co2);
-               return 0;
-       }
-
-       // set_hp(self, hp)
-       // hp = number of hitpoints (2 * number of hearts)
-       // returns: nil
-       static int l_set_hp(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               luaL_checknumber(L, 2);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               int hp = lua_tonumber(L, 2);
-               /*infostream<<"ObjectRef::l_set_hp(): id="<<co->getId()
-                               <<" hp="<<hp<<std::endl;*/
-               // Do it
-               co->setHP(hp);
-               // Return
-               return 0;
-       }
-
-       // get_hp(self)
-       // returns: number of hitpoints (2 * number of hearts)
-       // 0 if not applicable to this type of object
-       static int l_get_hp(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL){
-                       // Default hp is 1
-                       lua_pushnumber(L, 1);
-                       return 1;
-               }
-               int hp = co->getHP();
-               /*infostream<<"ObjectRef::l_get_hp(): id="<<co->getId()
-                               <<" hp="<<hp<<std::endl;*/
-               // Return
-               lua_pushnumber(L, hp);
-               return 1;
-       }
-
-       // get_inventory(self)
-       static int l_get_inventory(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               InventoryLocation loc = co->getInventoryLocation();
-               if(get_server(L)->getInventory(loc) != NULL)
-                       InvRef::create(L, loc);
-               else
-                       lua_pushnil(L); // An object may have no inventory (nil)
-               return 1;
-       }
-
-       // get_wield_list(self)
-       static int l_get_wield_list(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               lua_pushstring(L, co->getWieldList().c_str());
-               return 1;
-       }
-
-       // get_wield_index(self)
-       static int l_get_wield_index(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               lua_pushinteger(L, co->getWieldIndex() + 1);
-               return 1;
-       }
-
-       // get_wielded_item(self)
-       static int l_get_wielded_item(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL){
-                       // Empty ItemStack
-                       LuaItemStack::create(L, ItemStack());
-                       return 1;
-               }
-               // Do it
-               LuaItemStack::create(L, co->getWieldedItem());
-               return 1;
-       }
-
-       // set_wielded_item(self, itemstack or itemstring or table or nil)
-       static int l_set_wielded_item(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               ItemStack item = read_item(L, 2);
-               bool success = co->setWieldedItem(item);
-               lua_pushboolean(L, success);
-               return 1;
-       }
-
-       // set_armor_groups(self, groups)
-       static int l_set_armor_groups(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               ItemGroupList groups;
-               read_groups(L, 2, groups);
-               co->setArmorGroups(groups);
-               return 0;
-       }
-
-       // set_animation(self, frame_range, frame_speed, frame_blend)
-       static int l_set_animation(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               v2f frames = v2f(1, 1);
-               if(!lua_isnil(L, 2))
-                       frames = read_v2f(L, 2);
-               float frame_speed = 15;
-               if(!lua_isnil(L, 3))
-                       frame_speed = lua_tonumber(L, 3);
-               float frame_blend = 0;
-               if(!lua_isnil(L, 4))
-                       frame_blend = lua_tonumber(L, 4);
-               co->setAnimation(frames, frame_speed, frame_blend);
-               return 0;
-       }
-
-       // set_bone_position(self, std::string bone, v3f position, v3f rotation)
-       static int l_set_bone_position(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               std::string bone = "";
-               if(!lua_isnil(L, 2))
-                       bone = lua_tostring(L, 2);
-               v3f position = v3f(0, 0, 0);
-               if(!lua_isnil(L, 3))
-                       position = read_v3f(L, 3);
-               v3f rotation = v3f(0, 0, 0);
-               if(!lua_isnil(L, 4))
-                       rotation = read_v3f(L, 4);
-               co->setBonePosition(bone, position, rotation);
-               return 0;
-       }
-
-       // set_attach(self, parent, bone, position, rotation)
-       static int l_set_attach(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ObjectRef *parent_ref = checkobject(L, 2);
-               ServerActiveObject *co = getobject(ref);
-               ServerActiveObject *parent = getobject(parent_ref);
-               if(co == NULL) return 0;
-               if(parent == NULL) return 0;
-               // Do it
-               std::string bone = "";
-               if(!lua_isnil(L, 3))
-                       bone = lua_tostring(L, 3);
-               v3f position = v3f(0, 0, 0);
-               if(!lua_isnil(L, 4))
-                       position = read_v3f(L, 4);
-               v3f rotation = v3f(0, 0, 0);
-               if(!lua_isnil(L, 5))
-                       rotation = read_v3f(L, 5);
-               co->setAttachment(parent->getId(), bone, position, rotation);
-               return 0;
-       }
-
-       // set_detach(self)
-       static int l_set_detach(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               co->setAttachment(0, "", v3f(0,0,0), v3f(0,0,0));
-               return 0;
-       }
-
-       // set_properties(self, properties)
-       static int l_set_properties(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               ServerActiveObject *co = getobject(ref);
-               if(co == NULL) return 0;
-               ObjectProperties *prop = co->accessObjectProperties();
-               if(!prop)
-                       return 0;
-               read_object_properties(L, 2, prop);
-               co->notifyObjectPropertiesModified();
-               return 0;
-       }
-
-       /* LuaEntitySAO-only */
-
-       // setvelocity(self, {x=num, y=num, z=num})
-       static int l_setvelocity(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               LuaEntitySAO *co = getluaobject(ref);
-               if(co == NULL) return 0;
-               v3f pos = checkFloatPos(L, 2);
-               // Do it
-               co->setVelocity(pos);
-               return 0;
-       }
-
-       // getvelocity(self)
-       static int l_getvelocity(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               LuaEntitySAO *co = getluaobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               v3f v = co->getVelocity();
-               pushFloatPos(L, v);
-               return 1;
-       }
-
-       // setacceleration(self, {x=num, y=num, z=num})
-       static int l_setacceleration(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               LuaEntitySAO *co = getluaobject(ref);
-               if(co == NULL) return 0;
-               // pos
-               v3f pos = checkFloatPos(L, 2);
-               // Do it
-               co->setAcceleration(pos);
-               return 0;
-       }
-
-       // getacceleration(self)
-       static int l_getacceleration(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               LuaEntitySAO *co = getluaobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               v3f v = co->getAcceleration();
-               pushFloatPos(L, v);
-               return 1;
-       }
-
-       // setyaw(self, radians)
-       static int l_setyaw(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               LuaEntitySAO *co = getluaobject(ref);
-               if(co == NULL) return 0;
-               float yaw = luaL_checknumber(L, 2) * core::RADTODEG;
-               // Do it
-               co->setYaw(yaw);
-               return 0;
-       }
-
-       // getyaw(self)
-       static int l_getyaw(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               LuaEntitySAO *co = getluaobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               float yaw = co->getYaw() * core::DEGTORAD;
-               lua_pushnumber(L, yaw);
-               return 1;
-       }
-
-       // settexturemod(self, mod)
-       static int l_settexturemod(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               LuaEntitySAO *co = getluaobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               std::string mod = luaL_checkstring(L, 2);
-               co->setTextureMod(mod);
-               return 0;
-       }
-
-       // setsprite(self, p={x=0,y=0}, num_frames=1, framelength=0.2,
-       //           select_horiz_by_yawpitch=false)
-       static int l_setsprite(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               LuaEntitySAO *co = getluaobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               v2s16 p(0,0);
-               if(!lua_isnil(L, 2))
-                       p = read_v2s16(L, 2);
-               int num_frames = 1;
-               if(!lua_isnil(L, 3))
-                       num_frames = lua_tonumber(L, 3);
-               float framelength = 0.2;
-               if(!lua_isnil(L, 4))
-                       framelength = lua_tonumber(L, 4);
-               bool select_horiz_by_yawpitch = false;
-               if(!lua_isnil(L, 5))
-                       select_horiz_by_yawpitch = lua_toboolean(L, 5);
-               co->setSprite(p, num_frames, framelength, select_horiz_by_yawpitch);
-               return 0;
-       }
-
-       // DEPRECATED
-       // get_entity_name(self)
-       static int l_get_entity_name(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               LuaEntitySAO *co = getluaobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               std::string name = co->getName();
-               lua_pushstring(L, name.c_str());
-               return 1;
-       }
-
-       // get_luaentity(self)
-       static int l_get_luaentity(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               LuaEntitySAO *co = getluaobject(ref);
-               if(co == NULL) return 0;
-               // Do it
-               luaentity_get(L, co->getId());
-               return 1;
-       }
-
-       /* Player-only */
-
-       // is_player(self)
-       static int l_is_player(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               Player *player = getplayer(ref);
-               lua_pushboolean(L, (player != NULL));
-               return 1;
-       }
-
-       // get_player_name(self)
-       static int l_get_player_name(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               Player *player = getplayer(ref);
-               if(player == NULL){
-                       lua_pushlstring(L, "", 0);
-                       return 1;
-               }
-               // Do it
-               lua_pushstring(L, player->getName());
-               return 1;
-       }
-
-       // get_look_dir(self)
-       static int l_get_look_dir(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               Player *player = getplayer(ref);
-               if(player == NULL) return 0;
-               // Do it
-               float pitch = player->getRadPitch();
-               float yaw = player->getRadYaw();
-               v3f v(cos(pitch)*cos(yaw), sin(pitch), cos(pitch)*sin(yaw));
-               push_v3f(L, v);
-               return 1;
-       }
-
-       // get_look_pitch(self)
-       static int l_get_look_pitch(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               Player *player = getplayer(ref);
-               if(player == NULL) return 0;
-               // Do it
-               lua_pushnumber(L, player->getRadPitch());
-               return 1;
-       }
-
-       // get_look_yaw(self)
-       static int l_get_look_yaw(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               Player *player = getplayer(ref);
-               if(player == NULL) return 0;
-               // Do it
-               lua_pushnumber(L, player->getRadYaw());
-               return 1;
-       }
-
-       // set_inventory_formspec(self, formspec)
-       static int l_set_inventory_formspec(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               Player *player = getplayer(ref);
-               if(player == NULL) return 0;
-               std::string formspec = luaL_checkstring(L, 2);
-
-               player->inventory_formspec = formspec;
-               get_server(L)->reportInventoryFormspecModified(player->getName());
-               lua_pushboolean(L, true);
-               return 1;
-       }
-
-       // get_inventory_formspec(self) -> formspec
-       static int l_get_inventory_formspec(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               Player *player = getplayer(ref);
-               if(player == NULL) return 0;
-
-               std::string formspec = player->inventory_formspec;
-               lua_pushlstring(L, formspec.c_str(), formspec.size());
-               return 1;
-       }
-       
-       // get_player_control(self)
-       static int l_get_player_control(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               Player *player = getplayer(ref);
-               if(player == NULL){
-                       lua_pushlstring(L, "", 0);
-                       return 1;
-               }
-               // Do it
-               PlayerControl control = player->getPlayerControl();
-               lua_newtable(L);
-               lua_pushboolean(L, control.up);
-               lua_setfield(L, -2, "up");
-               lua_pushboolean(L, control.down);
-               lua_setfield(L, -2, "down");
-               lua_pushboolean(L, control.left);
-               lua_setfield(L, -2, "left");
-               lua_pushboolean(L, control.right);
-               lua_setfield(L, -2, "right");
-               lua_pushboolean(L, control.jump);
-               lua_setfield(L, -2, "jump");
-               lua_pushboolean(L, control.aux1);
-               lua_setfield(L, -2, "aux1");
-               lua_pushboolean(L, control.sneak);
-               lua_setfield(L, -2, "sneak");
-               lua_pushboolean(L, control.LMB);
-               lua_setfield(L, -2, "LMB");
-               lua_pushboolean(L, control.RMB);
-               lua_setfield(L, -2, "RMB");
-               return 1;
-       }
-       
-       // get_player_control_bits(self)
-       static int l_get_player_control_bits(lua_State *L)
-       {
-               ObjectRef *ref = checkobject(L, 1);
-               Player *player = getplayer(ref);
-               if(player == NULL){
-                       lua_pushlstring(L, "", 0);
-                       return 1;
-               }
-               // Do it        
-               lua_pushnumber(L, player->keyPressed);
-               return 1;
-       }
-       
-public:
-       ObjectRef(ServerActiveObject *object):
-               m_object(object)
-       {
-               //infostream<<"ObjectRef created for id="<<m_object->getId()<<std::endl;
-       }
-
-       ~ObjectRef()
-       {
-               /*if(m_object)
-                       infostream<<"ObjectRef destructing for id="
-                                       <<m_object->getId()<<std::endl;
-               else
-                       infostream<<"ObjectRef destructing for id=unknown"<<std::endl;*/
-       }
-
-       // Creates an ObjectRef and leaves it on top of stack
-       // Not callable from Lua; all references are created on the C side.
-       static void create(lua_State *L, ServerActiveObject *object)
-       {
-               ObjectRef *o = new ObjectRef(object);
-               //infostream<<"ObjectRef::create: o="<<o<<std::endl;
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
-               luaL_getmetatable(L, className);
-               lua_setmetatable(L, -2);
-       }
-
-       static void set_null(lua_State *L)
-       {
-               ObjectRef *o = checkobject(L, -1);
-               o->m_object = NULL;
-       }
-
-       static void Register(lua_State *L)
-       {
-               lua_newtable(L);
-               int methodtable = lua_gettop(L);
-               luaL_newmetatable(L, className);
-               int metatable = lua_gettop(L);
-
-               lua_pushliteral(L, "__metatable");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);  // hide metatable from Lua getmetatable()
-
-               lua_pushliteral(L, "__index");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);
-
-               lua_pushliteral(L, "__gc");
-               lua_pushcfunction(L, gc_object);
-               lua_settable(L, metatable);
-
-               lua_pop(L, 1);  // drop metatable
-
-               luaL_openlib(L, 0, methods, 0);  // fill methodtable
-               lua_pop(L, 1);  // drop methodtable
-
-               // Cannot be created from Lua
-               //lua_register(L, className, create_object);
-       }
-};
-const char ObjectRef::className[] = "ObjectRef";
-const luaL_reg ObjectRef::methods[] = {
-       // ServerActiveObject
-       method(ObjectRef, remove),
-       method(ObjectRef, getpos),
-       method(ObjectRef, setpos),
-       method(ObjectRef, moveto),
-       method(ObjectRef, punch),
-       method(ObjectRef, right_click),
-       method(ObjectRef, set_hp),
-       method(ObjectRef, get_hp),
-       method(ObjectRef, get_inventory),
-       method(ObjectRef, get_wield_list),
-       method(ObjectRef, get_wield_index),
-       method(ObjectRef, get_wielded_item),
-       method(ObjectRef, set_wielded_item),
-       method(ObjectRef, set_armor_groups),
-       method(ObjectRef, set_animation),
-       method(ObjectRef, set_bone_position),
-       method(ObjectRef, set_attach),
-       method(ObjectRef, set_detach),
-       method(ObjectRef, set_properties),
-       // LuaEntitySAO-only
-       method(ObjectRef, setvelocity),
-       method(ObjectRef, getvelocity),
-       method(ObjectRef, setacceleration),
-       method(ObjectRef, getacceleration),
-       method(ObjectRef, setyaw),
-       method(ObjectRef, getyaw),
-       method(ObjectRef, settexturemod),
-       method(ObjectRef, setsprite),
-       method(ObjectRef, get_entity_name),
-       method(ObjectRef, get_luaentity),
-       // Player-only
-       method(ObjectRef, is_player),
-       method(ObjectRef, get_player_name),
-       method(ObjectRef, get_look_dir),
-       method(ObjectRef, get_look_pitch),
-       method(ObjectRef, get_look_yaw),
-       method(ObjectRef, set_inventory_formspec),
-       method(ObjectRef, get_inventory_formspec),
-       method(ObjectRef, get_player_control),
-       method(ObjectRef, get_player_control_bits),
-       {0,0}
-};
-
-// Creates a new anonymous reference if cobj=NULL or id=0
-static void objectref_get_or_create(lua_State *L,
-               ServerActiveObject *cobj)
-{
-       if(cobj == NULL || cobj->getId() == 0){
-               ObjectRef::create(L, cobj);
-       } else {
-               objectref_get(L, cobj->getId());
-       }
-}
-
-class LuaPerlinNoise
-{
-private:
-       int seed;
-       int octaves;
-       float persistence;
-       float scale;
-       static const char className[];
-       static const luaL_reg methods[];
-
-       // Exported functions
-
-       // garbage collector
-       static int gc_object(lua_State *L)
-       {
-               LuaPerlinNoise *o = *(LuaPerlinNoise **)(lua_touserdata(L, 1));
-               delete o;
-               return 0;
-       }
-
-       static int l_get2d(lua_State *L)
-       {
-               LuaPerlinNoise *o = checkobject(L, 1);
-               v2f pos2d = read_v2f(L,2);
-               lua_Number val = noise2d_perlin(pos2d.X/o->scale, pos2d.Y/o->scale, o->seed, o->octaves, o->persistence);
-               lua_pushnumber(L, val);
-               return 1;
-       }
-       static int l_get3d(lua_State *L)
-       {
-               LuaPerlinNoise *o = checkobject(L, 1);
-               v3f pos3d = read_v3f(L,2);
-               lua_Number val = noise3d_perlin(pos3d.X/o->scale, pos3d.Y/o->scale, pos3d.Z/o->scale, o->seed, o->octaves, o->persistence);
-               lua_pushnumber(L, val);
-               return 1;
-       }
-
-public:
-       LuaPerlinNoise(int a_seed, int a_octaves, float a_persistence,
-                       float a_scale):
-               seed(a_seed),
-               octaves(a_octaves),
-               persistence(a_persistence),
-               scale(a_scale)
-       {
-       }
-
-       ~LuaPerlinNoise()
-       {
-       }
-
-       // LuaPerlinNoise(seed, octaves, persistence, scale)
-       // Creates an LuaPerlinNoise and leaves it on top of stack
-       static int create_object(lua_State *L)
-       {
-               int seed = luaL_checkint(L, 1);
-               int octaves = luaL_checkint(L, 2);
-               float persistence = luaL_checknumber(L, 3);
-               float scale = luaL_checknumber(L, 4);
-               LuaPerlinNoise *o = new LuaPerlinNoise(seed, octaves, persistence, scale);
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
-               luaL_getmetatable(L, className);
-               lua_setmetatable(L, -2);
-               return 1;
-       }
-
-       static LuaPerlinNoise* checkobject(lua_State *L, int narg)
-       {
-               luaL_checktype(L, narg, LUA_TUSERDATA);
-               void *ud = luaL_checkudata(L, narg, className);
-               if(!ud) luaL_typerror(L, narg, className);
-               return *(LuaPerlinNoise**)ud;  // unbox pointer
-       }
-
-       static void Register(lua_State *L)
-       {
-               lua_newtable(L);
-               int methodtable = lua_gettop(L);
-               luaL_newmetatable(L, className);
-               int metatable = lua_gettop(L);
-
-               lua_pushliteral(L, "__metatable");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);  // hide metatable from Lua getmetatable()
-
-               lua_pushliteral(L, "__index");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);
-
-               lua_pushliteral(L, "__gc");
-               lua_pushcfunction(L, gc_object);
-               lua_settable(L, metatable);
-
-               lua_pop(L, 1);  // drop metatable
-
-               luaL_openlib(L, 0, methods, 0);  // fill methodtable
-               lua_pop(L, 1);  // drop methodtable
-
-               // Can be created from Lua (PerlinNoise(seed, octaves, persistence)
-               lua_register(L, className, create_object);
-       }
-};
-const char LuaPerlinNoise::className[] = "PerlinNoise";
-const luaL_reg LuaPerlinNoise::methods[] = {
-       method(LuaPerlinNoise, get2d),
-       method(LuaPerlinNoise, get3d),
-       {0,0}
-};
-
-/*
-  PerlinNoiseMap
- */
-class LuaPerlinNoiseMap
-{
-private:
-       Noise *noise;
-       static const char className[];
-       static const luaL_reg methods[];
-
-       static int gc_object(lua_State *L)
-       {
-               LuaPerlinNoiseMap *o = *(LuaPerlinNoiseMap **)(lua_touserdata(L, 1));
-               delete o;
-               return 0;
-       }
-
-       static int l_get2dMap(lua_State *L)
-       {
-               int i = 0;
-
-               LuaPerlinNoiseMap *o = checkobject(L, 1);
-               v2f p = read_v2f(L, 2);
-               
-               Noise *n = o->noise;
-               n->perlinMap2D(p.X, p.Y);
-               
-               lua_newtable(L);
-               for (int y = 0; y != n->sy; y++) {
-                       lua_newtable(L);
-                       for (int x = 0; x != n->sx; x++) {
-                               float noiseval = n->np->offset + n->np->scale * n->result[i++];
-                               lua_pushnumber(L, noiseval);
-                               lua_rawseti(L, -2, x + 1);
-                       }
-                       lua_rawseti(L, -2, y + 1);
-               }
-               return 1;
-       }
-       
-       static int l_get3dMap(lua_State *L)
-       {
-               int i = 0;
-               
-               LuaPerlinNoiseMap *o = checkobject(L, 1);
-               v3f p = read_v3f(L, 2);
-               
-               Noise *n = o->noise;
-               n->perlinMap3D(p.X, p.Y, p.Z);
-
-               lua_newtable(L);
-               for (int z = 0; z != n->sz; z++) {
-                       lua_newtable(L);
-                       for (int y = 0; y != n->sy; y++) {
-                               lua_newtable(L);
-                               for (int x = 0; x != n->sx; x++) {
-                                       lua_pushnumber(L, n->np->offset + n->np->scale * n->result[i++]);
-                                       lua_rawseti(L, -2, x + 1);
-                               }
-                               lua_rawseti(L, -2, y + 1);
-                       }
-                       lua_rawseti(L, -2, z + 1);
-               }
-               return 1;
-       }
-
-public:
-       LuaPerlinNoiseMap(NoiseParams *np, int seed, v3s16 size) {
-               noise = new Noise(np, seed, size.X, size.Y, size.Z);
-       }
-
-       ~LuaPerlinNoiseMap()
-       {
-               delete noise->np;
-               delete noise;
-       }
-
-       // LuaPerlinNoiseMap(np, size)
-       // Creates an LuaPerlinNoiseMap and leaves it on top of stack
-       static int create_object(lua_State *L)
-       {
-               NoiseParams *np = read_noiseparams(L, 1);
-               if (!np)
-                       return 0;
-               v3s16 size = read_v3s16(L, 2);
-
-               LuaPerlinNoiseMap *o = new LuaPerlinNoiseMap(np, 0, size);
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
-               luaL_getmetatable(L, className);
-               lua_setmetatable(L, -2);
-               return 1;
-       }
-
-       static LuaPerlinNoiseMap *checkobject(lua_State *L, int narg)
-       {
-               luaL_checktype(L, narg, LUA_TUSERDATA);
-               
-               void *ud = luaL_checkudata(L, narg, className);
-               if (!ud)
-                       luaL_typerror(L, narg, className);
-               
-               return *(LuaPerlinNoiseMap **)ud;  // unbox pointer
-       }
-
-       static void Register(lua_State *L)
-       {
-               lua_newtable(L);
-               int methodtable = lua_gettop(L);
-               luaL_newmetatable(L, className);
-               int metatable = lua_gettop(L);
-
-               lua_pushliteral(L, "__metatable");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);  // hide metatable from Lua getmetatable()
-
-               lua_pushliteral(L, "__index");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);
-
-               lua_pushliteral(L, "__gc");
-               lua_pushcfunction(L, gc_object);
-               lua_settable(L, metatable);
-
-               lua_pop(L, 1);  // drop metatable
-
-               luaL_openlib(L, 0, methods, 0);  // fill methodtable
-               lua_pop(L, 1);  // drop methodtable
-
-               // Can be created from Lua (PerlinNoiseMap(np, size)
-               lua_register(L, className, create_object);
-       }
-};
-const char LuaPerlinNoiseMap::className[] = "PerlinNoiseMap";
-const luaL_reg LuaPerlinNoiseMap::methods[] = {
-       method(LuaPerlinNoiseMap, get2dMap),
-       method(LuaPerlinNoiseMap, get3dMap),
-       {0,0}
-};
-
-/*
-       NodeTimerRef
-*/
-
-class NodeTimerRef
-{
-private:
-       v3s16 m_p;
-       ServerEnvironment *m_env;
-
-       static const char className[];
-       static const luaL_reg methods[];
-
-       static int gc_object(lua_State *L) {
-               NodeTimerRef *o = *(NodeTimerRef **)(lua_touserdata(L, 1));
-               delete o;
-               return 0;
-       }
-
-       static NodeTimerRef *checkobject(lua_State *L, int narg)
-       {
-               luaL_checktype(L, narg, LUA_TUSERDATA);
-               void *ud = luaL_checkudata(L, narg, className);
-               if(!ud) luaL_typerror(L, narg, className);
-               return *(NodeTimerRef**)ud;  // unbox pointer
-       }
-
-       static int l_set(lua_State *L)
-       {
-               NodeTimerRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               f32 t = luaL_checknumber(L,2);
-               f32 e = luaL_checknumber(L,3);
-               env->getMap().setNodeTimer(o->m_p,NodeTimer(t,e));
-               return 0;
-       }
-
-       static int l_start(lua_State *L)
-       {
-               NodeTimerRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               f32 t = luaL_checknumber(L,2);
-               env->getMap().setNodeTimer(o->m_p,NodeTimer(t,0));
-               return 0;
-       }
-
-       static int l_stop(lua_State *L)
-       {
-               NodeTimerRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               env->getMap().removeNodeTimer(o->m_p);
-               return 0;
-       }
-
-       static int l_is_started(lua_State *L)
-       {
-               NodeTimerRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-
-               NodeTimer t = env->getMap().getNodeTimer(o->m_p);
-               lua_pushboolean(L,(t.timeout != 0));
-               return 1;
-       }
-
-       static int l_get_timeout(lua_State *L)
-       {
-               NodeTimerRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-
-               NodeTimer t = env->getMap().getNodeTimer(o->m_p);
-               lua_pushnumber(L,t.timeout);
-               return 1;
-       }
-
-       static int l_get_elapsed(lua_State *L)
-       {
-               NodeTimerRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-
-               NodeTimer t = env->getMap().getNodeTimer(o->m_p);
-               lua_pushnumber(L,t.elapsed);
-               return 1;
-       }
-
-public:
-       NodeTimerRef(v3s16 p, ServerEnvironment *env):
-               m_p(p),
-               m_env(env)
-       {
-       }
-
-       ~NodeTimerRef()
-       {
-       }
-
-       // Creates an NodeTimerRef and leaves it on top of stack
-       // Not callable from Lua; all references are created on the C side.
-       static void create(lua_State *L, v3s16 p, ServerEnvironment *env)
-       {
-               NodeTimerRef *o = new NodeTimerRef(p, env);
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
-               luaL_getmetatable(L, className);
-               lua_setmetatable(L, -2);
-       }
-
-       static void set_null(lua_State *L)
-       {
-               NodeTimerRef *o = checkobject(L, -1);
-               o->m_env = NULL;
-       }
-
-       static void Register(lua_State *L)
-       {
-               lua_newtable(L);
-               int methodtable = lua_gettop(L);
-               luaL_newmetatable(L, className);
-               int metatable = lua_gettop(L);
-
-               lua_pushliteral(L, "__metatable");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);  // hide metatable from Lua getmetatable()
-
-               lua_pushliteral(L, "__index");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);
-
-               lua_pushliteral(L, "__gc");
-               lua_pushcfunction(L, gc_object);
-               lua_settable(L, metatable);
-
-               lua_pop(L, 1);  // drop metatable
-
-               luaL_openlib(L, 0, methods, 0);  // fill methodtable
-               lua_pop(L, 1);  // drop methodtable
-
-               // Cannot be created from Lua
-               //lua_register(L, className, create_object);
-       }
-};
-const char NodeTimerRef::className[] = "NodeTimerRef";
-const luaL_reg NodeTimerRef::methods[] = {
-       method(NodeTimerRef, start),
-       method(NodeTimerRef, set),
-       method(NodeTimerRef, stop),
-       method(NodeTimerRef, is_started),
-       method(NodeTimerRef, get_timeout),
-       method(NodeTimerRef, get_elapsed),
-       {0,0}
-};
-
-/*
-       EnvRef
-*/
-
-class EnvRef
-{
-private:
-       ServerEnvironment *m_env;
-
-       static const char className[];
-       static const luaL_reg methods[];
-
-       static int gc_object(lua_State *L) {
-               EnvRef *o = *(EnvRef **)(lua_touserdata(L, 1));
-               delete o;
-               return 0;
-       }
-
-       static EnvRef *checkobject(lua_State *L, int narg)
-       {
-               luaL_checktype(L, narg, LUA_TUSERDATA);
-               void *ud = luaL_checkudata(L, narg, className);
-               if(!ud) luaL_typerror(L, narg, className);
-               return *(EnvRef**)ud;  // unbox pointer
-       }
-
-       // Exported functions
-
-       // EnvRef:set_node(pos, node)
-       // pos = {x=num, y=num, z=num}
-       static int l_set_node(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               INodeDefManager *ndef = env->getGameDef()->ndef();
-               // parameters
-               v3s16 pos = read_v3s16(L, 2);
-               MapNode n = readnode(L, 3, ndef);
-               // Do it
-               bool succeeded = env->setNode(pos, n);
-               lua_pushboolean(L, succeeded);
-               return 1;
-       }
-
-       static int l_add_node(lua_State *L)
-       {
-               return l_set_node(L);
-       }
-
-       // EnvRef:remove_node(pos)
-       // pos = {x=num, y=num, z=num}
-       static int l_remove_node(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               INodeDefManager *ndef = env->getGameDef()->ndef();
-               // parameters
-               v3s16 pos = read_v3s16(L, 2);
-               // Do it
-               bool succeeded = env->removeNode(pos);
-               lua_pushboolean(L, succeeded);
-               return 1;
-       }
-
-       // EnvRef:get_node(pos)
-       // pos = {x=num, y=num, z=num}
-       static int l_get_node(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // pos
-               v3s16 pos = read_v3s16(L, 2);
-               // Do it
-               MapNode n = env->getMap().getNodeNoEx(pos);
-               // Return node
-               pushnode(L, n, env->getGameDef()->ndef());
-               return 1;
-       }
-
-       // EnvRef:get_node_or_nil(pos)
-       // pos = {x=num, y=num, z=num}
-       static int l_get_node_or_nil(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // pos
-               v3s16 pos = read_v3s16(L, 2);
-               // Do it
-               try{
-                       MapNode n = env->getMap().getNode(pos);
-                       // Return node
-                       pushnode(L, n, env->getGameDef()->ndef());
-                       return 1;
-               } catch(InvalidPositionException &e)
-               {
-                       lua_pushnil(L);
-                       return 1;
-               }
-       }
-
-       // EnvRef:get_node_light(pos, timeofday)
-       // pos = {x=num, y=num, z=num}
-       // timeofday: nil = current time, 0 = night, 0.5 = day
-       static int l_get_node_light(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // Do it
-               v3s16 pos = read_v3s16(L, 2);
-               u32 time_of_day = env->getTimeOfDay();
-               if(lua_isnumber(L, 3))
-                       time_of_day = 24000.0 * lua_tonumber(L, 3);
-               time_of_day %= 24000;
-               u32 dnr = time_to_daynight_ratio(time_of_day, true);
-               MapNode n = env->getMap().getNodeNoEx(pos);
-               try{
-                       MapNode n = env->getMap().getNode(pos);
-                       INodeDefManager *ndef = env->getGameDef()->ndef();
-                       lua_pushinteger(L, n.getLightBlend(dnr, ndef));
-                       return 1;
-               } catch(InvalidPositionException &e)
-               {
-                       lua_pushnil(L);
-                       return 1;
-               }
-       }
-
-       // EnvRef:place_node(pos, node)
-       // pos = {x=num, y=num, z=num}
-       static int l_place_node(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               v3s16 pos = read_v3s16(L, 2);
-               MapNode n = readnode(L, 3, env->getGameDef()->ndef());
-
-               // Don't attempt to load non-loaded area as of now
-               MapNode n_old = env->getMap().getNodeNoEx(pos);
-               if(n_old.getContent() == CONTENT_IGNORE){
-                       lua_pushboolean(L, false);
-                       return 1;
-               }
-               // Create item to place
-               INodeDefManager *ndef = get_server(L)->ndef();
-               IItemDefManager *idef = get_server(L)->idef();
-               ItemStack item(ndef->get(n).name, 1, 0, "", idef);
-               // Make pointed position
-               PointedThing pointed;
-               pointed.type = POINTEDTHING_NODE;
-               pointed.node_abovesurface = pos;
-               pointed.node_undersurface = pos + v3s16(0,-1,0);
-               // Place it with a NULL placer (appears in Lua as a non-functional
-               // ObjectRef)
-               bool success = scriptapi_item_on_place(L, item, NULL, pointed);
-               lua_pushboolean(L, success);
-               return 1;
-       }
-
-       // EnvRef:dig_node(pos)
-       // pos = {x=num, y=num, z=num}
-       static int l_dig_node(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               v3s16 pos = read_v3s16(L, 2);
-
-               // Don't attempt to load non-loaded area as of now
-               MapNode n = env->getMap().getNodeNoEx(pos);
-               if(n.getContent() == CONTENT_IGNORE){
-                       lua_pushboolean(L, false);
-                       return 1;
-               }
-               // Dig it out with a NULL digger (appears in Lua as a
-               // non-functional ObjectRef)
-               bool success = scriptapi_node_on_dig(L, pos, n, NULL);
-               lua_pushboolean(L, success);
-               return 1;
-       }
-
-       // EnvRef:punch_node(pos)
-       // pos = {x=num, y=num, z=num}
-       static int l_punch_node(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               v3s16 pos = read_v3s16(L, 2);
-
-               // Don't attempt to load non-loaded area as of now
-               MapNode n = env->getMap().getNodeNoEx(pos);
-               if(n.getContent() == CONTENT_IGNORE){
-                       lua_pushboolean(L, false);
-                       return 1;
-               }
-               // Punch it with a NULL puncher (appears in Lua as a non-functional
-               // ObjectRef)
-               bool success = scriptapi_node_on_punch(L, pos, n, NULL);
-               lua_pushboolean(L, success);
-               return 1;
-       }
-
-       // EnvRef:get_meta(pos)
-       static int l_get_meta(lua_State *L)
-       {
-               //infostream<<"EnvRef::l_get_meta()"<<std::endl;
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // Do it
-               v3s16 p = read_v3s16(L, 2);
-               NodeMetaRef::create(L, p, env);
-               return 1;
-       }
-
-       // EnvRef:get_node_timer(pos)
-       static int l_get_node_timer(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // Do it
-               v3s16 p = read_v3s16(L, 2);
-               NodeTimerRef::create(L, p, env);
-               return 1;
-       }
-
-       // EnvRef:add_entity(pos, entityname) -> ObjectRef or nil
-       // pos = {x=num, y=num, z=num}
-       static int l_add_entity(lua_State *L)
-       {
-               //infostream<<"EnvRef::l_add_entity()"<<std::endl;
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // pos
-               v3f pos = checkFloatPos(L, 2);
-               // content
-               const char *name = luaL_checkstring(L, 3);
-               // Do it
-               ServerActiveObject *obj = new LuaEntitySAO(env, pos, name, "");
-               int objectid = env->addActiveObject(obj);
-               // If failed to add, return nothing (reads as nil)
-               if(objectid == 0)
-                       return 0;
-               // Return ObjectRef
-               objectref_get_or_create(L, obj);
-               return 1;
-       }
-
-       // EnvRef:add_item(pos, itemstack or itemstring or table) -> ObjectRef or nil
-       // pos = {x=num, y=num, z=num}
-       static int l_add_item(lua_State *L)
-       {
-               //infostream<<"EnvRef::l_add_item()"<<std::endl;
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // pos
-               v3f pos = checkFloatPos(L, 2);
-               // item
-               ItemStack item = read_item(L, 3);
-               if(item.empty() || !item.isKnown(get_server(L)->idef()))
-                       return 0;
-               // Use minetest.spawn_item to spawn a __builtin:item
-               lua_getglobal(L, "minetest");
-               lua_getfield(L, -1, "spawn_item");
-               if(lua_isnil(L, -1))
-                       return 0;
-               lua_pushvalue(L, 2);
-               lua_pushstring(L, item.getItemString().c_str());
-               if(lua_pcall(L, 2, 1, 0))
-                       script_error(L, "error: %s", lua_tostring(L, -1));
-               return 1;
-               /*lua_pushvalue(L, 1);
-               lua_pushstring(L, "__builtin:item");
-               lua_pushstring(L, item.getItemString().c_str());
-               return l_add_entity(L);*/
-               /*// Do it
-               ServerActiveObject *obj = createItemSAO(env, pos, item.getItemString());
-               int objectid = env->addActiveObject(obj);
-               // If failed to add, return nothing (reads as nil)
-               if(objectid == 0)
-                       return 0;
-               // Return ObjectRef
-               objectref_get_or_create(L, obj);
-               return 1;*/
-       }
-
-       // EnvRef:add_rat(pos)
-       // pos = {x=num, y=num, z=num}
-       static int l_add_rat(lua_State *L)
-       {
-               infostream<<"EnvRef::l_add_rat(): C++ mobs have been removed."
-                               <<" Doing nothing."<<std::endl;
-               return 0;
-       }
-
-       // EnvRef:add_firefly(pos)
-       // pos = {x=num, y=num, z=num}
-       static int l_add_firefly(lua_State *L)
-       {
-               infostream<<"EnvRef::l_add_firefly(): C++ mobs have been removed."
-                               <<" Doing nothing."<<std::endl;
-               return 0;
-       }
-
-       // EnvRef:get_player_by_name(name)
-       static int l_get_player_by_name(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // Do it
-               const char *name = luaL_checkstring(L, 2);
-               Player *player = env->getPlayer(name);
-               if(player == NULL){
-                       lua_pushnil(L);
-                       return 1;
-               }
-               PlayerSAO *sao = player->getPlayerSAO();
-               if(sao == NULL){
-                       lua_pushnil(L);
-                       return 1;
-               }
-               // Put player on stack
-               objectref_get_or_create(L, sao);
-               return 1;
-       }
-
-       // EnvRef:get_objects_inside_radius(pos, radius)
-       static int l_get_objects_inside_radius(lua_State *L)
-       {
-               // Get the table insert function
-               lua_getglobal(L, "table");
-               lua_getfield(L, -1, "insert");
-               int table_insert = lua_gettop(L);
-               // Get environemnt
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // Do it
-               v3f pos = checkFloatPos(L, 2);
-               float radius = luaL_checknumber(L, 3) * BS;
-               std::set<u16> ids = env->getObjectsInsideRadius(pos, radius);
-               lua_newtable(L);
-               int table = lua_gettop(L);
-               for(std::set<u16>::const_iterator
-                               i = ids.begin(); i != ids.end(); i++){
-                       ServerActiveObject *obj = env->getActiveObject(*i);
-                       // Insert object reference into table
-                       lua_pushvalue(L, table_insert);
-                       lua_pushvalue(L, table);
-                       objectref_get_or_create(L, obj);
-                       if(lua_pcall(L, 2, 0, 0))
-                               script_error(L, "error: %s", lua_tostring(L, -1));
-               }
-               return 1;
-       }
-
-       // EnvRef:set_timeofday(val)
-       // val = 0...1
-       static int l_set_timeofday(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // Do it
-               float timeofday_f = luaL_checknumber(L, 2);
-               assert(timeofday_f >= 0.0 && timeofday_f <= 1.0);
-               int timeofday_mh = (int)(timeofday_f * 24000.0);
-               // This should be set directly in the environment but currently
-               // such changes aren't immediately sent to the clients, so call
-               // the server instead.
-               //env->setTimeOfDay(timeofday_mh);
-               get_server(L)->setTimeOfDay(timeofday_mh);
-               return 0;
-       }
-
-       // EnvRef:get_timeofday() -> 0...1
-       static int l_get_timeofday(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               // Do it
-               int timeofday_mh = env->getTimeOfDay();
-               float timeofday_f = (float)timeofday_mh / 24000.0;
-               lua_pushnumber(L, timeofday_f);
-               return 1;
-       }
-
-
-       // EnvRef:find_node_near(pos, radius, nodenames) -> pos or nil
-       // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
-       static int l_find_node_near(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               INodeDefManager *ndef = get_server(L)->ndef();
-               v3s16 pos = read_v3s16(L, 2);
-               int radius = luaL_checkinteger(L, 3);
-               std::set<content_t> filter;
-               if(lua_istable(L, 4)){
-                       int table = 4;
-                       lua_pushnil(L);
-                       while(lua_next(L, table) != 0){
-                               // key at index -2 and value at index -1
-                               luaL_checktype(L, -1, LUA_TSTRING);
-                               ndef->getIds(lua_tostring(L, -1), filter);
-                               // removes value, keeps key for next iteration
-                               lua_pop(L, 1);
-                       }
-               } else if(lua_isstring(L, 4)){
-                       ndef->getIds(lua_tostring(L, 4), filter);
-               }
-
-               for(int d=1; d<=radius; d++){
-                       core::list<v3s16> list;
-                       getFacePositions(list, d);
-                       for(core::list<v3s16>::Iterator i = list.begin();
-                                       i != list.end(); i++){
-                               v3s16 p = pos + (*i);
-                               content_t c = env->getMap().getNodeNoEx(p).getContent();
-                               if(filter.count(c) != 0){
-                                       push_v3s16(L, p);
-                                       return 1;
-                               }
-                       }
-               }
-               return 0;
-       }
-
-       // EnvRef:find_nodes_in_area(minp, maxp, nodenames) -> list of positions
-       // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
-       static int l_find_nodes_in_area(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               INodeDefManager *ndef = get_server(L)->ndef();
-               v3s16 minp = read_v3s16(L, 2);
-               v3s16 maxp = read_v3s16(L, 3);
-               std::set<content_t> filter;
-               if(lua_istable(L, 4)){
-                       int table = 4;
-                       lua_pushnil(L);
-                       while(lua_next(L, table) != 0){
-                               // key at index -2 and value at index -1
-                               luaL_checktype(L, -1, LUA_TSTRING);
-                               ndef->getIds(lua_tostring(L, -1), filter);
-                               // removes value, keeps key for next iteration
-                               lua_pop(L, 1);
-                       }
-               } else if(lua_isstring(L, 4)){
-                       ndef->getIds(lua_tostring(L, 4), filter);
-               }
-
-               // Get the table insert function
-               lua_getglobal(L, "table");
-               lua_getfield(L, -1, "insert");
-               int table_insert = lua_gettop(L);
-
-               lua_newtable(L);
-               int table = lua_gettop(L);
-               for(s16 x=minp.X; x<=maxp.X; x++)
-               for(s16 y=minp.Y; y<=maxp.Y; y++)
-               for(s16 z=minp.Z; z<=maxp.Z; z++)
-               {
-                       v3s16 p(x,y,z);
-                       content_t c = env->getMap().getNodeNoEx(p).getContent();
-                       if(filter.count(c) != 0){
-                               lua_pushvalue(L, table_insert);
-                               lua_pushvalue(L, table);
-                               push_v3s16(L, p);
-                               if(lua_pcall(L, 2, 0, 0))
-                                       script_error(L, "error: %s", lua_tostring(L, -1));
-                       }
-               }
-               return 1;
-       }
-
-       //      EnvRef:get_perlin(seeddiff, octaves, persistence, scale)
-       //  returns world-specific PerlinNoise
-       static int l_get_perlin(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-
-               int seeddiff = luaL_checkint(L, 2);
-               int octaves = luaL_checkint(L, 3);
-               float persistence = luaL_checknumber(L, 4);
-               float scale = luaL_checknumber(L, 5);
-
-               LuaPerlinNoise *n = new LuaPerlinNoise(seeddiff + int(env->getServerMap().getSeed()), octaves, persistence, scale);
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
-               luaL_getmetatable(L, "PerlinNoise");
-               lua_setmetatable(L, -2);
-               return 1;
-       }
-    
-       //  EnvRef:get_perlin_map(noiseparams, size)
-       //  returns world-specific PerlinNoiseMap
-       static int l_get_perlin_map(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if (env == NULL)
-                       return 0;
-               
-               NoiseParams *np = read_noiseparams(L, 2);
-               if (!np)
-                       return 0;
-               v3s16 size = read_v3s16(L, 3);
-               
-               int seed = (int)(env->getServerMap().getSeed());
-               LuaPerlinNoiseMap *n = new LuaPerlinNoiseMap(np, seed, size);
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
-               luaL_getmetatable(L, "PerlinNoiseMap");
-               lua_setmetatable(L, -2);
-               return 1;
-       }
-
-       // EnvRef:clear_objects()
-       // clear all objects in the environment
-       static int l_clear_objects(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               o->m_env->clearAllObjects();
-               return 0;
-       }
-
-       static int l_spawn_tree(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, 1);
-               ServerEnvironment *env = o->m_env;
-               if(env == NULL) return 0;
-               v3s16 p0 = read_v3s16(L, 2);
-
-               treegen::TreeDef tree_def;
-               std::string trunk,leaves,fruit;
-               INodeDefManager *ndef = env->getGameDef()->ndef();
-
-               if(lua_istable(L, 3))
-               {
-                       getstringfield(L, 3, "axiom", tree_def.initial_axiom);
-                       getstringfield(L, 3, "rules_a", tree_def.rules_a);
-                       getstringfield(L, 3, "rules_b", tree_def.rules_b);
-                       getstringfield(L, 3, "rules_c", tree_def.rules_c);
-                       getstringfield(L, 3, "rules_d", tree_def.rules_d);
-                       getstringfield(L, 3, "trunk", trunk);
-                       tree_def.trunknode=ndef->getId(trunk);
-                       getstringfield(L, 3, "leaves", leaves);
-                       tree_def.leavesnode=ndef->getId(leaves);
-                       tree_def.leaves2_chance=0;
-                       getstringfield(L, 3, "leaves2", leaves);
-                       if (leaves !="")
-                       {
-                               tree_def.leaves2node=ndef->getId(leaves);
-                               getintfield(L, 3, "leaves2_chance", tree_def.leaves2_chance);
-                       }
-                       getintfield(L, 3, "angle", tree_def.angle);
-                       getintfield(L, 3, "iterations", tree_def.iterations);
-                       getintfield(L, 3, "random_level", tree_def.iterations_random_level);
-                       getstringfield(L, 3, "trunk_type", tree_def.trunk_type);
-                       getboolfield(L, 3, "thin_branches", tree_def.thin_branches);
-                       tree_def.fruit_chance=0;
-                       getstringfield(L, 3, "fruit", fruit);
-                       if (fruit != "")
-                       {
-                               tree_def.fruitnode=ndef->getId(fruit);
-                               getintfield(L, 3, "fruit_chance",tree_def.fruit_chance);
-                       }
-                       getintfield(L, 3, "seed", tree_def.seed);
-               }
-               else
-                       return 0;
-               treegen::spawn_ltree (env, p0, ndef, tree_def);
-               return 1;
-       }
-
-public:
-       EnvRef(ServerEnvironment *env):
-               m_env(env)
-       {
-               //infostream<<"EnvRef created"<<std::endl;
-       }
-
-       ~EnvRef()
-       {
-               //infostream<<"EnvRef destructing"<<std::endl;
-       }
-
-       // Creates an EnvRef and leaves it on top of stack
-       // Not callable from Lua; all references are created on the C side.
-       static void create(lua_State *L, ServerEnvironment *env)
-       {
-               EnvRef *o = new EnvRef(env);
-               //infostream<<"EnvRef::create: o="<<o<<std::endl;
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
-               luaL_getmetatable(L, className);
-               lua_setmetatable(L, -2);
-       }
-
-       static void set_null(lua_State *L)
-       {
-               EnvRef *o = checkobject(L, -1);
-               o->m_env = NULL;
-       }
-
-       static void Register(lua_State *L)
-       {
-               lua_newtable(L);
-               int methodtable = lua_gettop(L);
-               luaL_newmetatable(L, className);
-               int metatable = lua_gettop(L);
-
-               lua_pushliteral(L, "__metatable");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);  // hide metatable from Lua getmetatable()
-
-               lua_pushliteral(L, "__index");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);
-
-               lua_pushliteral(L, "__gc");
-               lua_pushcfunction(L, gc_object);
-               lua_settable(L, metatable);
-
-               lua_pop(L, 1);  // drop metatable
-
-               luaL_openlib(L, 0, methods, 0);  // fill methodtable
-               lua_pop(L, 1);  // drop methodtable
-
-               // Cannot be created from Lua
-               //lua_register(L, className, create_object);
-       }
-};
-const char EnvRef::className[] = "EnvRef";
-const luaL_reg EnvRef::methods[] = {
-       method(EnvRef, set_node),
-       method(EnvRef, add_node),
-       method(EnvRef, remove_node),
-       method(EnvRef, get_node),
-       method(EnvRef, get_node_or_nil),
-       method(EnvRef, get_node_light),
-       method(EnvRef, place_node),
-       method(EnvRef, dig_node),
-       method(EnvRef, punch_node),
-       method(EnvRef, add_entity),
-       method(EnvRef, add_item),
-       method(EnvRef, add_rat),
-       method(EnvRef, add_firefly),
-       method(EnvRef, get_meta),
-       method(EnvRef, get_node_timer),
-       method(EnvRef, get_player_by_name),
-       method(EnvRef, get_objects_inside_radius),
-       method(EnvRef, set_timeofday),
-       method(EnvRef, get_timeofday),
-       method(EnvRef, find_node_near),
-       method(EnvRef, find_nodes_in_area),
-       method(EnvRef, get_perlin),
-       method(EnvRef, get_perlin_map),
-       method(EnvRef, clear_objects),
-       method(EnvRef, spawn_tree),
-       {0,0}
-};
-
-/*
-       LuaPseudoRandom
-*/
-
-
-class LuaPseudoRandom
-{
-private:
-       PseudoRandom m_pseudo;
-
-       static const char className[];
-       static const luaL_reg methods[];
-
-       // Exported functions
-
-       // garbage collector
-       static int gc_object(lua_State *L)
-       {
-               LuaPseudoRandom *o = *(LuaPseudoRandom **)(lua_touserdata(L, 1));
-               delete o;
-               return 0;
-       }
-
-       // next(self, min=0, max=32767) -> get next value
-       static int l_next(lua_State *L)
-       {
-               LuaPseudoRandom *o = checkobject(L, 1);
-               int min = 0;
-               int max = 32767;
-               lua_settop(L, 3); // Fill 2 and 3 with nil if they don't exist
-               if(!lua_isnil(L, 2))
-                       min = luaL_checkinteger(L, 2);
-               if(!lua_isnil(L, 3))
-                       max = luaL_checkinteger(L, 3);
-               if(max < min){
-                       errorstream<<"PseudoRandom.next(): max="<<max<<" min="<<min<<std::endl;
-                       throw LuaError(L, "PseudoRandom.next(): max < min");
-               }
-               if(max - min != 32767 && max - min > 32767/5)
-                       throw LuaError(L, "PseudoRandom.next() max-min is not 32767 and is > 32768/5. This is disallowed due to the bad random distribution the implementation would otherwise make.");
-               PseudoRandom &pseudo = o->m_pseudo;
-               int val = pseudo.next();
-               val = (val % (max-min+1)) + min;
-               lua_pushinteger(L, val);
-               return 1;
-       }
-
-public:
-       LuaPseudoRandom(int seed):
-               m_pseudo(seed)
-       {
-       }
-
-       ~LuaPseudoRandom()
-       {
-       }
-
-       const PseudoRandom& getItem() const
-       {
-               return m_pseudo;
-       }
-       PseudoRandom& getItem()
-       {
-               return m_pseudo;
-       }
-
-       // LuaPseudoRandom(seed)
-       // Creates an LuaPseudoRandom and leaves it on top of stack
-       static int create_object(lua_State *L)
-       {
-               int seed = luaL_checknumber(L, 1);
-               LuaPseudoRandom *o = new LuaPseudoRandom(seed);
-               *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
-               luaL_getmetatable(L, className);
-               lua_setmetatable(L, -2);
-               return 1;
-       }
-
-       static LuaPseudoRandom* checkobject(lua_State *L, int narg)
-       {
-               luaL_checktype(L, narg, LUA_TUSERDATA);
-               void *ud = luaL_checkudata(L, narg, className);
-               if(!ud) luaL_typerror(L, narg, className);
-               return *(LuaPseudoRandom**)ud;  // unbox pointer
-       }
-
-       static void Register(lua_State *L)
-       {
-               lua_newtable(L);
-               int methodtable = lua_gettop(L);
-               luaL_newmetatable(L, className);
-               int metatable = lua_gettop(L);
-
-               lua_pushliteral(L, "__metatable");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);  // hide metatable from Lua getmetatable()
-
-               lua_pushliteral(L, "__index");
-               lua_pushvalue(L, methodtable);
-               lua_settable(L, metatable);
-
-               lua_pushliteral(L, "__gc");
-               lua_pushcfunction(L, gc_object);
-               lua_settable(L, metatable);
-
-               lua_pop(L, 1);  // drop metatable
-
-               luaL_openlib(L, 0, methods, 0);  // fill methodtable
-               lua_pop(L, 1);  // drop methodtable
-
-               // Can be created from Lua (LuaPseudoRandom(seed))
-               lua_register(L, className, create_object);
-       }
-};
-const char LuaPseudoRandom::className[] = "PseudoRandom";
-const luaL_reg LuaPseudoRandom::methods[] = {
-       method(LuaPseudoRandom, next),
-       {0,0}
-};
-
-
-
-/*
-       LuaABM
-*/
-
-class LuaABM : public ActiveBlockModifier
-{
-private:
-       lua_State *m_lua;
-       int m_id;
-
-       std::set<std::string> m_trigger_contents;
-       std::set<std::string> m_required_neighbors;
-       float m_trigger_interval;
-       u32 m_trigger_chance;
-public:
-       LuaABM(lua_State *L, int id,
-                       const std::set<std::string> &trigger_contents,
-                       const std::set<std::string> &required_neighbors,
-                       float trigger_interval, u32 trigger_chance):
-               m_lua(L),
-               m_id(id),
-               m_trigger_contents(trigger_contents),
-               m_required_neighbors(required_neighbors),
-               m_trigger_interval(trigger_interval),
-               m_trigger_chance(trigger_chance)
-       {
-       }
-       virtual std::set<std::string> getTriggerContents()
-       {
-               return m_trigger_contents;
-       }
-       virtual std::set<std::string> getRequiredNeighbors()
-       {
-               return m_required_neighbors;
-       }
-       virtual float getTriggerInterval()
-       {
-               return m_trigger_interval;
-       }
-       virtual u32 getTriggerChance()
-       {
-               return m_trigger_chance;
-       }
-       virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n,
-                       u32 active_object_count, u32 active_object_count_wider)
-       {
-               lua_State *L = m_lua;
-
-               realitycheck(L);
-               assert(lua_checkstack(L, 20));
-               StackUnroller stack_unroller(L);
-
-               // Get minetest.registered_abms
-               lua_getglobal(L, "minetest");
-               lua_getfield(L, -1, "registered_abms");
-               luaL_checktype(L, -1, LUA_TTABLE);
-               int registered_abms = lua_gettop(L);
-
-               // Get minetest.registered_abms[m_id]
-               lua_pushnumber(L, m_id);
-               lua_gettable(L, registered_abms);
-               if(lua_isnil(L, -1))
-                       assert(0);
-
-               // Call action
-               luaL_checktype(L, -1, LUA_TTABLE);
-               lua_getfield(L, -1, "action");
-               luaL_checktype(L, -1, LUA_TFUNCTION);
-               push_v3s16(L, p);
-               pushnode(L, n, env->getGameDef()->ndef());
-               lua_pushnumber(L, active_object_count);
-               lua_pushnumber(L, active_object_count_wider);
-               if(lua_pcall(L, 4, 0, 0))
-                       script_error(L, "error: %s", lua_tostring(L, -1));
-       }
-};
-
-/*
-       ServerSoundParams
-*/
-
-static void read_server_sound_params(lua_State *L, int index,
-               ServerSoundParams &params)
-{
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
-       // Clear
-       params = ServerSoundParams();
-       if(lua_istable(L, index)){
-               getfloatfield(L, index, "gain", params.gain);
-               getstringfield(L, index, "to_player", params.to_player);
-               lua_getfield(L, index, "pos");
-               if(!lua_isnil(L, -1)){
-                       v3f p = read_v3f(L, -1)*BS;
-                       params.pos = p;
-                       params.type = ServerSoundParams::SSP_POSITIONAL;
-               }
-               lua_pop(L, 1);
-               lua_getfield(L, index, "object");
-               if(!lua_isnil(L, -1)){
-                       ObjectRef *ref = ObjectRef::checkobject(L, -1);
-                       ServerActiveObject *sao = ObjectRef::getobject(ref);
-                       if(sao){
-                               params.object = sao->getId();
-                               params.type = ServerSoundParams::SSP_OBJECT;
-                       }
-               }
-               lua_pop(L, 1);
-               params.max_hear_distance = BS*getfloatfield_default(L, index,
-                               "max_hear_distance", params.max_hear_distance/BS);
-               getboolfield(L, index, "loop", params.loop);
-       }
-}
-
-/*
-       Global functions
-*/
-
-// debug(text)
-// Writes a line to dstream
-static int l_debug(lua_State *L)
-{
-       std::string text = lua_tostring(L, 1);
-       dstream << text << std::endl;
-       return 0;
-}
-
-// log([level,] text)
-// Writes a line to the logger.
-// The one-argument version logs to infostream.
-// The two-argument version accept a log level: error, action, info, or verbose.
-static int l_log(lua_State *L)
-{
-       std::string text;
-       LogMessageLevel level = LMT_INFO;
-       if(lua_isnone(L, 2))
-       {
-               text = lua_tostring(L, 1);
-       }
-       else
-       {
-               std::string levelname = luaL_checkstring(L, 1);
-               text = luaL_checkstring(L, 2);
-               if(levelname == "error")
-                       level = LMT_ERROR;
-               else if(levelname == "action")
-                       level = LMT_ACTION;
-               else if(levelname == "verbose")
-                       level = LMT_VERBOSE;
-       }
-       log_printline(level, text);
-       return 0;
-}
-
-// request_shutdown()
-static int l_request_shutdown(lua_State *L)
-{
-       get_server(L)->requestShutdown();
-       return 0;
-}
-
-// get_server_status()
-static int l_get_server_status(lua_State *L)
-{
-       lua_pushstring(L, wide_to_narrow(get_server(L)->getStatusString()).c_str());
-       return 1;
-}
-
-// register_biome_groups({frequencies})
-static int l_register_biome_groups(lua_State *L)
-{
-       luaL_checktype(L, 1, LUA_TTABLE);
-       int index = 1;
-       if (!lua_istable(L, index))
-               throw LuaError(L, "register_biome_groups: parameter is not a table");
-
-       BiomeDefManager *bmgr = get_server(L)->getBiomeDef();
-       if (!bmgr) {
-               verbosestream << "register_biome_groups: BiomeDefManager not active" << std::endl;
-               return 0;
-       }
-
-       lua_pushnil(L);
-       for (int i = 1; lua_next(L, index) != 0; i++) {
-               bmgr->addBiomeGroup(lua_tonumber(L, -1));
-               lua_pop(L, 1);
-       }
-       lua_pop(L, 1);
-
-       return 0;
-}
-
-// register_biome({lots of stuff})
-static int l_register_biome(lua_State *L)
-{
-       luaL_checktype(L, 1, LUA_TTABLE);
-       int index = 1, groupid;
-       std::string nodename;
-
-       IWritableNodeDefManager *ndef = get_server(L)->getWritableNodeDefManager();
-       BiomeDefManager *bmgr = get_server(L)->getBiomeDef();
-       if (!bmgr) {
-               verbosestream << "register_biome: BiomeDefManager not active" << std::endl;
-               return 0;
-       }
-
-       groupid = getintfield_default(L, index, "group_id", 0);
-
-       enum BiomeTerrainType terrain = (BiomeTerrainType)getenumfield(L, index,
-                                       "terrain_type", es_BiomeTerrainType, BIOME_TERRAIN_NORMAL);
-       Biome *b = bmgr->createBiome(terrain);
-
-       b->name = getstringfield_default(L, index, "name", "");
-
-       if (getstringfield(L, index, "node_top", nodename))
-               b->n_top = MapNode(ndef->getId(nodename));
-       else
-               b->n_top = MapNode(CONTENT_IGNORE);
-
-       if (getstringfield(L, index, "node_filler", nodename))
-               b->n_filler = MapNode(ndef->getId(nodename));
-       else
-               b->n_filler = b->n_top;
-
-       b->ntopnodes = getintfield_default(L, index, "num_top_nodes", 0);
-
-       b->height_min   = getintfield_default(L, index, "height_min", 0);
-       b->height_max   = getintfield_default(L, index, "height_max", 0);
-       b->heat_min     = getfloatfield_default(L, index, "heat_min", 0.);
-       b->heat_max     = getfloatfield_default(L, index, "heat_max", 0.);
-       b->humidity_min = getfloatfield_default(L, index, "humidity_min", 0.);
-       b->humidity_max = getfloatfield_default(L, index, "humidity_max", 0.);
-
-       b->np = new NoiseParams; // should read an entire NoiseParams later on...
-       getfloatfield(L, index, "scale", b->np->scale);
-       getfloatfield(L, index, "offset", b->np->offset);
-
-       b->groupid = (s8)groupid;
-       b->flags   = 0; //reserved
-
-       bmgr->addBiome(b);
-
-       verbosestream << "register_biome: " << b->name << std::endl;
-       return 0;
-}
-
-// register_item_raw({lots of stuff})
-static int l_register_item_raw(lua_State *L)
-{
-       luaL_checktype(L, 1, LUA_TTABLE);
-       int table = 1;
-
-       // Get the writable item and node definition managers from the server
-       IWritableItemDefManager *idef =
-                       get_server(L)->getWritableItemDefManager();
-       IWritableNodeDefManager *ndef =
-                       get_server(L)->getWritableNodeDefManager();
-
-       // Check if name is defined
-       std::string name;
-       lua_getfield(L, table, "name");
-       if(lua_isstring(L, -1)){
-               name = lua_tostring(L, -1);
-               verbosestream<<"register_item_raw: "<<name<<std::endl;
-       } else {
-               throw LuaError(L, "register_item_raw: name is not defined or not a string");
-       }
-
-       // Check if on_use is defined
-
-       ItemDefinition def;
-       // Set a distinctive default value to check if this is set
-       def.node_placement_prediction = "__default";
-
-       // Read the item definition
-       def = read_item_definition(L, table, def);
-
-       // Default to having client-side placement prediction for nodes
-       // ("" in item definition sets it off)
-       if(def.node_placement_prediction == "__default"){
-               if(def.type == ITEM_NODE && !def.rightclickable)
-                       def.node_placement_prediction = name;
-               else
-                       def.node_placement_prediction = "";
-       }
-
-       // Register item definition
-       idef->registerItem(def);
-
-       // Read the node definition (content features) and register it
-       if(def.type == ITEM_NODE)
-       {
-               ContentFeatures f = read_content_features(L, table);
-               ndef->set(f.name, f);
-       }
-
-       return 0; /* number of results */
-}
-
-// register_alias_raw(name, convert_to_name)
-static int l_register_alias_raw(lua_State *L)
-{
-       std::string name = luaL_checkstring(L, 1);
-       std::string convert_to = luaL_checkstring(L, 2);
-
-       // Get the writable item definition manager from the server
-       IWritableItemDefManager *idef =
-                       get_server(L)->getWritableItemDefManager();
-
-       idef->registerAlias(name, convert_to);
-
-       return 0; /* number of results */
-}
-
-// helper for register_craft
-static bool read_craft_recipe_shaped(lua_State *L, int index,
-               int &width, std::vector<std::string> &recipe)
-{
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
-
-       if(!lua_istable(L, index))
-               return false;
-
-       lua_pushnil(L);
-       int rowcount = 0;
-       while(lua_next(L, index) != 0){
-               int colcount = 0;
-               // key at index -2 and value at index -1
-               if(!lua_istable(L, -1))
-                       return false;
-               int table2 = lua_gettop(L);
-               lua_pushnil(L);
-               while(lua_next(L, table2) != 0){
-                       // key at index -2 and value at index -1
-                       if(!lua_isstring(L, -1))
-                               return false;
-                       recipe.push_back(lua_tostring(L, -1));
-                       // removes value, keeps key for next iteration
-                       lua_pop(L, 1);
-                       colcount++;
-               }
-               if(rowcount == 0){
-                       width = colcount;
-               } else {
-                       if(colcount != width)
-                               return false;
-               }
-               // removes value, keeps key for next iteration
-               lua_pop(L, 1);
-               rowcount++;
-       }
-       return width != 0;
-}
-
-// helper for register_craft
-static bool read_craft_recipe_shapeless(lua_State *L, int index,
-               std::vector<std::string> &recipe)
-{
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
-
-       if(!lua_istable(L, index))
-               return false;
-
-       lua_pushnil(L);
-       while(lua_next(L, index) != 0){
-               // key at index -2 and value at index -1
-               if(!lua_isstring(L, -1))
-                       return false;
-               recipe.push_back(lua_tostring(L, -1));
-               // removes value, keeps key for next iteration
-               lua_pop(L, 1);
-       }
-       return true;
-}
-
-// helper for register_craft
-static bool read_craft_replacements(lua_State *L, int index,
-               CraftReplacements &replacements)
-{
-       if(index < 0)
-               index = lua_gettop(L) + 1 + index;
-
-       if(!lua_istable(L, index))
-               return false;
-
-       lua_pushnil(L);
-       while(lua_next(L, index) != 0){
-               // key at index -2 and value at index -1
-               if(!lua_istable(L, -1))
-                       return false;
-               lua_rawgeti(L, -1, 1);
-               if(!lua_isstring(L, -1))
-                       return false;
-               std::string replace_from = lua_tostring(L, -1);
-               lua_pop(L, 1);
-               lua_rawgeti(L, -1, 2);
-               if(!lua_isstring(L, -1))
-                       return false;
-               std::string replace_to = lua_tostring(L, -1);
-               lua_pop(L, 1);
-               replacements.pairs.push_back(
-                               std::make_pair(replace_from, replace_to));
-               // removes value, keeps key for next iteration
-               lua_pop(L, 1);
-       }
-       return true;
-}
-// register_craft({output=item, recipe={{item00,item10},{item01,item11}})
-static int l_register_craft(lua_State *L)
-{
-       //infostream<<"register_craft"<<std::endl;
-       luaL_checktype(L, 1, LUA_TTABLE);
-       int table = 1;
-
-       // Get the writable craft definition manager from the server
-       IWritableCraftDefManager *craftdef =
-                       get_server(L)->getWritableCraftDefManager();
-
-       std::string type = getstringfield_default(L, table, "type", "shaped");
-
-       /*
-               CraftDefinitionShaped
-       */
-       if(type == "shaped"){
-               std::string output = getstringfield_default(L, table, "output", "");
-               if(output == "")
-                       throw LuaError(L, "Crafting definition is missing an output");
-
-               int width = 0;
-               std::vector<std::string> recipe;
-               lua_getfield(L, table, "recipe");
-               if(lua_isnil(L, -1))
-                       throw LuaError(L, "Crafting definition is missing a recipe"
-                                       " (output=\"" + output + "\")");
-               if(!read_craft_recipe_shaped(L, -1, width, recipe))
-                       throw LuaError(L, "Invalid crafting recipe"
-                                       " (output=\"" + output + "\")");
-
-               CraftReplacements replacements;
-               lua_getfield(L, table, "replacements");
-               if(!lua_isnil(L, -1))
-               {
-                       if(!read_craft_replacements(L, -1, replacements))
-                               throw LuaError(L, "Invalid replacements"
-                                               " (output=\"" + output + "\")");
-               }
-
-               CraftDefinition *def = new CraftDefinitionShaped(
-                               output, width, recipe, replacements);
-               craftdef->registerCraft(def);
-       }
-       /*
-               CraftDefinitionShapeless
-       */
-       else if(type == "shapeless"){
-               std::string output = getstringfield_default(L, table, "output", "");
-               if(output == "")
-                       throw LuaError(L, "Crafting definition (shapeless)"
-                                       " is missing an output");
-
-               std::vector<std::string> recipe;
-               lua_getfield(L, table, "recipe");
-               if(lua_isnil(L, -1))
-                       throw LuaError(L, "Crafting definition (shapeless)"
-                                       " is missing a recipe"
-                                       " (output=\"" + output + "\")");
-               if(!read_craft_recipe_shapeless(L, -1, recipe))
-                       throw LuaError(L, "Invalid crafting recipe"
-                                       " (output=\"" + output + "\")");
-
-               CraftReplacements replacements;
-               lua_getfield(L, table, "replacements");
-               if(!lua_isnil(L, -1))
-               {
-                       if(!read_craft_replacements(L, -1, replacements))
-                               throw LuaError(L, "Invalid replacements"
-                                               " (output=\"" + output + "\")");
-               }
-
-               CraftDefinition *def = new CraftDefinitionShapeless(
-                               output, recipe, replacements);
-               craftdef->registerCraft(def);
-       }
-       /*
-               CraftDefinitionToolRepair
-       */
-       else if(type == "toolrepair"){
-               float additional_wear = getfloatfield_default(L, table,
-                               "additional_wear", 0.0);
-
-               CraftDefinition *def = new CraftDefinitionToolRepair(
-                               additional_wear);
-               craftdef->registerCraft(def);
-       }
-       /*
-               CraftDefinitionCooking
-       */
-       else if(type == "cooking"){
-               std::string output = getstringfield_default(L, table, "output", "");
-               if(output == "")
-                       throw LuaError(L, "Crafting definition (cooking)"
-                                       " is missing an output");
-
-               std::string recipe = getstringfield_default(L, table, "recipe", "");
-               if(recipe == "")
-                       throw LuaError(L, "Crafting definition (cooking)"
-                                       " is missing a recipe"
-                                       " (output=\"" + output + "\")");
-
-               float cooktime = getfloatfield_default(L, table, "cooktime", 3.0);
-
-               CraftReplacements replacements;
-               lua_getfield(L, table, "replacements");
-               if(!lua_isnil(L, -1))
-               {
-                       if(!read_craft_replacements(L, -1, replacements))
-                               throw LuaError(L, "Invalid replacements"
-                                               " (cooking output=\"" + output + "\")");
-               }
-
-               CraftDefinition *def = new CraftDefinitionCooking(
-                               output, recipe, cooktime, replacements);
-               craftdef->registerCraft(def);
-       }
-       /*
-               CraftDefinitionFuel
-       */
-       else if(type == "fuel"){
-               std::string recipe = getstringfield_default(L, table, "recipe", "");
-               if(recipe == "")
-                       throw LuaError(L, "Crafting definition (fuel)"
-                                       " is missing a recipe");
-
-               float burntime = getfloatfield_default(L, table, "burntime", 1.0);
-
-               CraftReplacements replacements;
-               lua_getfield(L, table, "replacements");
-               if(!lua_isnil(L, -1))
-               {
-                       if(!read_craft_replacements(L, -1, replacements))
-                               throw LuaError(L, "Invalid replacements"
-                                               " (fuel recipe=\"" + recipe + "\")");
-               }
-
-               CraftDefinition *def = new CraftDefinitionFuel(
-                               recipe, burntime, replacements);
-               craftdef->registerCraft(def);
-       }
-       else
-       {
-               throw LuaError(L, "Unknown crafting definition type: \"" + type + "\"");
-       }
-
-       lua_pop(L, 1);
-       return 0; /* number of results */
-}
-
-// setting_set(name, value)
-static int l_setting_set(lua_State *L)
-{
-       const char *name = luaL_checkstring(L, 1);
-       const char *value = luaL_checkstring(L, 2);
-       g_settings->set(name, value);
-       return 0;
-}
-
-// setting_get(name)
-static int l_setting_get(lua_State *L)
-{
-       const char *name = luaL_checkstring(L, 1);
-       try{
-               std::string value = g_settings->get(name);
-               lua_pushstring(L, value.c_str());
-       } catch(SettingNotFoundException &e){
-               lua_pushnil(L);
-       }
-       return 1;
-}
-
-// setting_getbool(name)
-static int l_setting_getbool(lua_State *L)
-{
-       const char *name = luaL_checkstring(L, 1);
-       try{
-               bool value = g_settings->getBool(name);
-               lua_pushboolean(L, value);
-       } catch(SettingNotFoundException &e){
-               lua_pushnil(L);
-       }
-       return 1;
-}
-
-// setting_save()
-static int l_setting_save(lua_State *L)
-{
-       get_server(L)->saveConfig();
-       return 0;
-}
-
-// chat_send_all(text)
-static int l_chat_send_all(lua_State *L)
-{
-       const char *text = luaL_checkstring(L, 1);
-       // Get server from registry
-       Server *server = get_server(L);
-       // Send
-       server->notifyPlayers(narrow_to_wide(text));
-       return 0;
-}
-
-// chat_send_player(name, text)
-static int l_chat_send_player(lua_State *L)
-{
-       const char *name = luaL_checkstring(L, 1);
-       const char *text = luaL_checkstring(L, 2);
-       // Get server from registry
-       Server *server = get_server(L);
-       // Send
-       server->notifyPlayer(name, narrow_to_wide(text));
-       return 0;
-}
-
-// get_player_privs(name, text)
-static int l_get_player_privs(lua_State *L)
-{
-       const char *name = luaL_checkstring(L, 1);
-       // Get server from registry
-       Server *server = get_server(L);
-       // Do it
-       lua_newtable(L);
-       int table = lua_gettop(L);
-       std::set<std::string> privs_s = server->getPlayerEffectivePrivs(name);
-       for(std::set<std::string>::const_iterator
-                       i = privs_s.begin(); i != privs_s.end(); i++){
-               lua_pushboolean(L, true);
-               lua_setfield(L, table, i->c_str());
-       }
-       lua_pushvalue(L, table);
-       return 1;
-}
-
-// get_ban_list()
-static int l_get_ban_list(lua_State *L)
-{
-       lua_pushstring(L, get_server(L)->getBanDescription("").c_str());
-       return 1;
-}
-
-// get_ban_description()
-static int l_get_ban_description(lua_State *L)
-{
-       const char * ip_or_name = luaL_checkstring(L, 1);
-       lua_pushstring(L, get_server(L)->getBanDescription(std::string(ip_or_name)).c_str());
-       return 1;
-}
-
-// ban_player()
-static int l_ban_player(lua_State *L)
-{
-       const char * name = luaL_checkstring(L, 1);
-       Player *player = get_env(L)->getPlayer(name);
-       if(player == NULL)
-       {
-               lua_pushboolean(L, false); // no such player
-               return 1;
-       }
-       try
-       {
-               Address addr = get_server(L)->getPeerAddress(get_env(L)->getPlayer(name)->peer_id);
-               std::string ip_str = addr.serializeString();
-               get_server(L)->setIpBanned(ip_str, name);
-       }
-       catch(con::PeerNotFoundException) // unlikely
-       {
-               dstream << __FUNCTION_NAME << ": peer was not found" << std::endl;
-               lua_pushboolean(L, false); // error
-               return 1;
-       }
-       lua_pushboolean(L, true);
-       return 1;
-}
-
-// unban_player_or_ip()
-static int l_unban_player_of_ip(lua_State *L)
-{
-       const char * ip_or_name = luaL_checkstring(L, 1);
-       get_server(L)->unsetIpBanned(ip_or_name);
-       lua_pushboolean(L, true);
-       return 1;
-}
-
-// get_inventory(location)
-static int l_get_inventory(lua_State *L)
-{
-       InventoryLocation loc;
-
-       std::string type = checkstringfield(L, 1, "type");
-       if(type == "player"){
-               std::string name = checkstringfield(L, 1, "name");
-               loc.setPlayer(name);
-       } else if(type == "node"){
-               lua_getfield(L, 1, "pos");
-               v3s16 pos = check_v3s16(L, -1);
-               loc.setNodeMeta(pos);
-       } else if(type == "detached"){
-               std::string name = checkstringfield(L, 1, "name");
-               loc.setDetached(name);
-       }
-
-       if(get_server(L)->getInventory(loc) != NULL)
-               InvRef::create(L, loc);
-       else
-               lua_pushnil(L);
-       return 1;
-}
-
-// create_detached_inventory_raw(name)
-static int l_create_detached_inventory_raw(lua_State *L)
-{
-       const char *name = luaL_checkstring(L, 1);
-       if(get_server(L)->createDetachedInventory(name) != NULL){
-               InventoryLocation loc;
-               loc.setDetached(name);
-               InvRef::create(L, loc);
-       }else{
-               lua_pushnil(L);
-       }
-       return 1;
-}
-
-// show_formspec(playername,formname,formspec)
-static int l_show_formspec(lua_State *L)
-{
-       const char *playername = luaL_checkstring(L, 1);
-       const char *formname = luaL_checkstring(L, 2);
-       const char *formspec = luaL_checkstring(L, 3);
-
-       if(get_server(L)->showFormspec(playername,formspec,formname))
-       {
-               lua_pushboolean(L, true);
-       }else{
-               lua_pushboolean(L, false);
-       }
-       return 1;
-}
-
-// get_dig_params(groups, tool_capabilities[, time_from_last_punch])
-static int l_get_dig_params(lua_State *L)
-{
-       std::map<std::string, int> groups;
-       read_groups(L, 1, groups);
-       ToolCapabilities tp = read_tool_capabilities(L, 2);
-       if(lua_isnoneornil(L, 3))
-               push_dig_params(L, getDigParams(groups, &tp));
-       else
-               push_dig_params(L, getDigParams(groups, &tp,
-                                       luaL_checknumber(L, 3)));
-       return 1;
-}
-
-// get_hit_params(groups, tool_capabilities[, time_from_last_punch])
-static int l_get_hit_params(lua_State *L)
-{
-       std::map<std::string, int> groups;
-       read_groups(L, 1, groups);
-       ToolCapabilities tp = read_tool_capabilities(L, 2);
-       if(lua_isnoneornil(L, 3))
-               push_hit_params(L, getHitParams(groups, &tp));
-       else
-               push_hit_params(L, getHitParams(groups, &tp,
-                                       luaL_checknumber(L, 3)));
-       return 1;
-}
-
-// get_current_modname()
-static int l_get_current_modname(lua_State *L)
-{
-       lua_getfield(L, LUA_REGISTRYINDEX, "minetest_current_modname");
-       return 1;
-}
-
-// get_modpath(modname)
-static int l_get_modpath(lua_State *L)
-{
-       std::string modname = luaL_checkstring(L, 1);
-       // Do it
-       if(modname == "__builtin"){
-               std::string path = get_server(L)->getBuiltinLuaPath();
-               lua_pushstring(L, path.c_str());
-               return 1;
-       }
-       const ModSpec *mod = get_server(L)->getModSpec(modname);
-       if(!mod){
-               lua_pushnil(L);
-               return 1;
-       }
-       lua_pushstring(L, mod->path.c_str());
-       return 1;
-}
-
-// get_modnames()
-// the returned list is sorted alphabetically for you
-static int l_get_modnames(lua_State *L)
-{
-       // Get a list of mods
-       core::list<std::string> mods_unsorted, mods_sorted;
-       get_server(L)->getModNames(mods_unsorted);
-
-       // Take unsorted items from mods_unsorted and sort them into
-       // mods_sorted; not great performance but the number of mods on a
-       // server will likely be small.
-       for(core::list<std::string>::Iterator i = mods_unsorted.begin();
-           i != mods_unsorted.end(); i++)
-       {
-               bool added = false;
-               for(core::list<std::string>::Iterator x = mods_sorted.begin();
-                   x != mods_unsorted.end(); x++)
-               {
-                       // I doubt anybody using Minetest will be using
-                       // anything not ASCII based :)
-                       if((*i).compare(*x) <= 0)
-                       {
-                               mods_sorted.insert_before(x, *i);
-                               added = true;
-                               break;
-                       }
-               }
-               if(!added)
-                       mods_sorted.push_back(*i);
-       }
-
-       // Get the table insertion function from Lua.
-       lua_getglobal(L, "table");
-       lua_getfield(L, -1, "insert");
-       int insertion_func = lua_gettop(L);
-
-       // Package them up for Lua
-       lua_newtable(L);
-       int new_table = lua_gettop(L);
-       core::list<std::string>::Iterator i = mods_sorted.begin();
-       while(i != mods_sorted.end())
-       {
-               lua_pushvalue(L, insertion_func);
-               lua_pushvalue(L, new_table);
-               lua_pushstring(L, (*i).c_str());
-               if(lua_pcall(L, 2, 0, 0) != 0)
-               {
-                       script_error(L, "error: %s", lua_tostring(L, -1));
-               }
-               i++;
-       }
-       return 1;
-}
-
-// get_worldpath()
-static int l_get_worldpath(lua_State *L)
-{
-       std::string worldpath = get_server(L)->getWorldPath();
-       lua_pushstring(L, worldpath.c_str());
-       return 1;
-}
-
-// sound_play(spec, parameters)
-static int l_sound_play(lua_State *L)
-{
-       SimpleSoundSpec spec;
-       read_soundspec(L, 1, spec);
-       ServerSoundParams params;
-       read_server_sound_params(L, 2, params);
-       s32 handle = get_server(L)->playSound(spec, params);
-       lua_pushinteger(L, handle);
-       return 1;
-}
-
-// sound_stop(handle)
-static int l_sound_stop(lua_State *L)
-{
-       int handle = luaL_checkinteger(L, 1);
-       get_server(L)->stopSound(handle);
-       return 0;
-}
-
-// is_singleplayer()
-static int l_is_singleplayer(lua_State *L)
-{
-       lua_pushboolean(L, get_server(L)->isSingleplayer());
-       return 1;
-}
-
-// get_password_hash(name, raw_password)
-static int l_get_password_hash(lua_State *L)
-{
-       std::string name = luaL_checkstring(L, 1);
-       std::string raw_password = luaL_checkstring(L, 2);
-       std::string hash = translatePassword(name,
-                       narrow_to_wide(raw_password));
-       lua_pushstring(L, hash.c_str());
-       return 1;
-}
-
-// notify_authentication_modified(name)
-static int l_notify_authentication_modified(lua_State *L)
-{
-       std::string name = "";
-       if(lua_isstring(L, 1))
-               name = lua_tostring(L, 1);
-       get_server(L)->reportPrivsModified(name);
-       return 0;
-}
-
-// get_craft_result(input)
-static int l_get_craft_result(lua_State *L)
-{
-       int input_i = 1;
-       std::string method_s = getstringfield_default(L, input_i, "method", "normal");
-       enum CraftMethod method = (CraftMethod)getenumfield(L, input_i, "method",
-                               es_CraftMethod, CRAFT_METHOD_NORMAL);
-       int width = 1;
-       lua_getfield(L, input_i, "width");
-       if(lua_isnumber(L, -1))
-               width = luaL_checkinteger(L, -1);
-       lua_pop(L, 1);
-       lua_getfield(L, input_i, "items");
-       std::vector<ItemStack> items = read_items(L, -1);
-       lua_pop(L, 1); // items
-
-       IGameDef *gdef = get_server(L);
-       ICraftDefManager *cdef = gdef->cdef();
-       CraftInput input(method, width, items);
-       CraftOutput output;
-       bool got = cdef->getCraftResult(input, output, true, gdef);
-       lua_newtable(L); // output table
-       if(got){
-               ItemStack item;
-               item.deSerialize(output.item, gdef->idef());
-               LuaItemStack::create(L, item);
-               lua_setfield(L, -2, "item");
-               setintfield(L, -1, "time", output.time);
-       } else {
-               LuaItemStack::create(L, ItemStack());
-               lua_setfield(L, -2, "item");
-               setintfield(L, -1, "time", 0);
-       }
-       lua_newtable(L); // decremented input table
-       lua_pushstring(L, method_s.c_str());
-       lua_setfield(L, -2, "method");
-       lua_pushinteger(L, width);
-       lua_setfield(L, -2, "width");
-       push_items(L, input.items);
-       lua_setfield(L, -2, "items");
-       return 2;
-}
-
-// get_craft_recipe(result item)
-static int l_get_craft_recipe(lua_State *L)
-{
-       int k = 0;
-       char tmp[20];
-       int input_i = 1;
-       std::string o_item = luaL_checkstring(L,input_i);
-
-       IGameDef *gdef = get_server(L);
-       ICraftDefManager *cdef = gdef->cdef();
-       CraftInput input;
-       CraftOutput output(o_item,0);
-       bool got = cdef->getCraftRecipe(input, output, gdef);
-       lua_newtable(L); // output table
-       if(got){
-               lua_newtable(L);
-               for(std::vector<ItemStack>::const_iterator
-                       i = input.items.begin();
-                       i != input.items.end(); i++, k++)
-               {
-                       if (i->empty())
-                       {
-                               continue;
-                       }
-                       sprintf(tmp,"%d",k);
-                       lua_pushstring(L,tmp);
-                       lua_pushstring(L,i->name.c_str());
-                       lua_settable(L, -3);
-               }
-               lua_setfield(L, -2, "items");
-               setintfield(L, -1, "width", input.width);
-               switch (input.method) {
-               case CRAFT_METHOD_NORMAL:
-                       lua_pushstring(L,"normal");
-                       break;
-               case CRAFT_METHOD_COOKING:
-                       lua_pushstring(L,"cooking");
-                       break;
-               case CRAFT_METHOD_FUEL:
-                       lua_pushstring(L,"fuel");
-                       break;
-               default:
-                       lua_pushstring(L,"unknown");
-               }
-               lua_setfield(L, -2, "type");
-       } else {
-               lua_pushnil(L);
-               lua_setfield(L, -2, "items");
-               setintfield(L, -1, "width", 0);
-       }
-       return 1;
-}
-
-// rollback_get_last_node_actor(p, range, seconds) -> actor, p, seconds
-static int l_rollback_get_last_node_actor(lua_State *L)
-{
-       v3s16 p = read_v3s16(L, 1);
-       int range = luaL_checknumber(L, 2);
-       int seconds = luaL_checknumber(L, 3);
-       Server *server = get_server(L);
-       IRollbackManager *rollback = server->getRollbackManager();
-       v3s16 act_p;
-       int act_seconds = 0;
-       std::string actor = rollback->getLastNodeActor(p, range, seconds, &act_p, &act_seconds);
-       lua_pushstring(L, actor.c_str());
-       push_v3s16(L, act_p);
-       lua_pushnumber(L, act_seconds);
-       return 3;
-}
-
-// rollback_revert_actions_by(actor, seconds) -> bool, log messages
-static int l_rollback_revert_actions_by(lua_State *L)
-{
-       std::string actor = luaL_checkstring(L, 1);
-       int seconds = luaL_checknumber(L, 2);
-       Server *server = get_server(L);
-       IRollbackManager *rollback = server->getRollbackManager();
-       std::list<RollbackAction> actions = rollback->getRevertActions(actor, seconds);
-       std::list<std::string> log;
-       bool success = server->rollbackRevertActions(actions, &log);
-       // Push boolean result
-       lua_pushboolean(L, success);
-       // Get the table insert function and push the log table
-       lua_getglobal(L, "table");
-       lua_getfield(L, -1, "insert");
-       int table_insert = lua_gettop(L);
-       lua_newtable(L);
-       int table = lua_gettop(L);
-       for(std::list<std::string>::const_iterator i = log.begin();
-                       i != log.end(); i++)
-       {
-               lua_pushvalue(L, table_insert);
-               lua_pushvalue(L, table);
-               lua_pushstring(L, i->c_str());
-               if(lua_pcall(L, 2, 0, 0))
-                       script_error(L, "error: %s", lua_tostring(L, -1));
-       }
-       lua_remove(L, -2); // Remove table
-       lua_remove(L, -2); // Remove insert
-       return 2;
-}
-
-static const struct luaL_Reg minetest_f [] = {
-       {"debug", l_debug},
-       {"log", l_log},
-       {"request_shutdown", l_request_shutdown},
-       {"get_server_status", l_get_server_status},
-       {"register_item_raw", l_register_item_raw},
-       {"register_alias_raw", l_register_alias_raw},
-       {"register_craft", l_register_craft},
-       {"register_biome", l_register_biome},
-       {"register_biome_groups", l_register_biome_groups},
-       {"setting_set", l_setting_set},
-       {"setting_get", l_setting_get},
-       {"setting_getbool", l_setting_getbool},
-       {"setting_save",l_setting_save},
-       {"chat_send_all", l_chat_send_all},
-       {"chat_send_player", l_chat_send_player},
-       {"get_player_privs", l_get_player_privs},
-       {"get_ban_list", l_get_ban_list},
-       {"get_ban_description", l_get_ban_description},
-       {"ban_player", l_ban_player},
-       {"unban_player_or_ip", l_unban_player_of_ip},
-       {"get_inventory", l_get_inventory},
-       {"create_detached_inventory_raw", l_create_detached_inventory_raw},
-       {"show_formspec", l_show_formspec},
-       {"get_dig_params", l_get_dig_params},
-       {"get_hit_params", l_get_hit_params},
-       {"get_current_modname", l_get_current_modname},
-       {"get_modpath", l_get_modpath},
-       {"get_modnames", l_get_modnames},
-       {"get_worldpath", l_get_worldpath},
-       {"sound_play", l_sound_play},
-       {"sound_stop", l_sound_stop},
-       {"is_singleplayer", l_is_singleplayer},
-       {"get_password_hash", l_get_password_hash},
-       {"notify_authentication_modified", l_notify_authentication_modified},
-       {"get_craft_result", l_get_craft_result},
-       {"get_craft_recipe", l_get_craft_recipe},
-       {"rollback_get_last_node_actor", l_rollback_get_last_node_actor},
-       {"rollback_revert_actions_by", l_rollback_revert_actions_by},
-       {NULL, NULL}
-};
-
-/*
-       Main export function
-*/
-
-void scriptapi_export(lua_State *L, Server *server)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       verbosestream<<"scriptapi_export()"<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Store server as light userdata in registry
-       lua_pushlightuserdata(L, server);
-       lua_setfield(L, LUA_REGISTRYINDEX, "minetest_server");
-
-       // Register global functions in table minetest
-       lua_newtable(L);
-       luaL_register(L, NULL, minetest_f);
-       lua_setglobal(L, "minetest");
-
-       // Get the main minetest table
-       lua_getglobal(L, "minetest");
-
-       // Add tables to minetest
-       lua_newtable(L);
-       lua_setfield(L, -2, "object_refs");
-       lua_newtable(L);
-       lua_setfield(L, -2, "luaentities");
-
-       // Register wrappers
-       LuaItemStack::Register(L);
-       InvRef::Register(L);
-       NodeMetaRef::Register(L);
-       NodeTimerRef::Register(L);
-       ObjectRef::Register(L);
-       EnvRef::Register(L);
-       LuaPseudoRandom::Register(L);
-       LuaPerlinNoise::Register(L);
-       LuaPerlinNoiseMap::Register(L);
-}
-
-bool scriptapi_loadmod(lua_State *L, const std::string &scriptpath,
-               const std::string &modname)
-{
-       ModNameStorer modnamestorer(L, modname);
-
-       if(!string_allowed(modname, "abcdefghijklmnopqrstuvwxyz"
-                       "0123456789_")){
-               errorstream<<"Error loading mod \""<<modname
-                               <<"\": modname does not follow naming conventions: "
-                               <<"Only chararacters [a-z0-9_] are allowed."<<std::endl;
-               return false;
-       }
-
-       bool success = false;
-
-       try{
-               success = script_load(L, scriptpath.c_str());
-       }
-       catch(LuaError &e){
-               errorstream<<"Error loading mod \""<<modname
-                               <<"\": "<<e.what()<<std::endl;
-       }
-
-       return success;
-}
-
-void scriptapi_add_environment(lua_State *L, ServerEnvironment *env)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       verbosestream<<"scriptapi_add_environment"<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Create EnvRef on stack
-       EnvRef::create(L, env);
-       int envref = lua_gettop(L);
-
-       // minetest.env = envref
-       lua_getglobal(L, "minetest");
-       luaL_checktype(L, -1, LUA_TTABLE);
-       lua_pushvalue(L, envref);
-       lua_setfield(L, -2, "env");
-
-       // Store environment as light userdata in registry
-       lua_pushlightuserdata(L, env);
-       lua_setfield(L, LUA_REGISTRYINDEX, "minetest_env");
-
-       /*
-               Add ActiveBlockModifiers to environment
-       */
-
-       // Get minetest.registered_abms
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_abms");
-       luaL_checktype(L, -1, LUA_TTABLE);
-       int registered_abms = lua_gettop(L);
-
-       if(lua_istable(L, registered_abms)){
-               int table = lua_gettop(L);
-               lua_pushnil(L);
-               while(lua_next(L, table) != 0){
-                       // key at index -2 and value at index -1
-                       int id = lua_tonumber(L, -2);
-                       int current_abm = lua_gettop(L);
-
-                       std::set<std::string> trigger_contents;
-                       lua_getfield(L, current_abm, "nodenames");
-                       if(lua_istable(L, -1)){
-                               int table = lua_gettop(L);
-                               lua_pushnil(L);
-                               while(lua_next(L, table) != 0){
-                                       // key at index -2 and value at index -1
-                                       luaL_checktype(L, -1, LUA_TSTRING);
-                                       trigger_contents.insert(lua_tostring(L, -1));
-                                       // removes value, keeps key for next iteration
-                                       lua_pop(L, 1);
-                               }
-                       } else if(lua_isstring(L, -1)){
-                               trigger_contents.insert(lua_tostring(L, -1));
-                       }
-                       lua_pop(L, 1);
-
-                       std::set<std::string> required_neighbors;
-                       lua_getfield(L, current_abm, "neighbors");
-                       if(lua_istable(L, -1)){
-                               int table = lua_gettop(L);
-                               lua_pushnil(L);
-                               while(lua_next(L, table) != 0){
-                                       // key at index -2 and value at index -1
-                                       luaL_checktype(L, -1, LUA_TSTRING);
-                                       required_neighbors.insert(lua_tostring(L, -1));
-                                       // removes value, keeps key for next iteration
-                                       lua_pop(L, 1);
-                               }
-                       } else if(lua_isstring(L, -1)){
-                               required_neighbors.insert(lua_tostring(L, -1));
-                       }
-                       lua_pop(L, 1);
-
-                       float trigger_interval = 10.0;
-                       getfloatfield(L, current_abm, "interval", trigger_interval);
-
-                       int trigger_chance = 50;
-                       getintfield(L, current_abm, "chance", trigger_chance);
-
-                       LuaABM *abm = new LuaABM(L, id, trigger_contents,
-                                       required_neighbors, trigger_interval, trigger_chance);
-
-                       env->addActiveBlockModifier(abm);
-
-                       // removes value, keeps key for next iteration
-                       lua_pop(L, 1);
-               }
-       }
-       lua_pop(L, 1);
-}
-
-#if 0
-// Dump stack top with the dump2 function
-static void dump2(lua_State *L, const char *name)
-{
-       // Dump object (debug)
-       lua_getglobal(L, "dump2");
-       luaL_checktype(L, -1, LUA_TFUNCTION);
-       lua_pushvalue(L, -2); // Get previous stack top as first parameter
-       lua_pushstring(L, name);
-       if(lua_pcall(L, 2, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-#endif
-
-/*
-       object_reference
-*/
-
-void scriptapi_add_object_reference(lua_State *L, ServerActiveObject *cobj)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       //infostream<<"scriptapi_add_object_reference: id="<<cobj->getId()<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Create object on stack
-       ObjectRef::create(L, cobj); // Puts ObjectRef (as userdata) on stack
-       int object = lua_gettop(L);
-
-       // Get minetest.object_refs table
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "object_refs");
-       luaL_checktype(L, -1, LUA_TTABLE);
-       int objectstable = lua_gettop(L);
-
-       // object_refs[id] = object
-       lua_pushnumber(L, cobj->getId()); // Push id
-       lua_pushvalue(L, object); // Copy object to top of stack
-       lua_settable(L, objectstable);
-}
-
-void scriptapi_rm_object_reference(lua_State *L, ServerActiveObject *cobj)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       //infostream<<"scriptapi_rm_object_reference: id="<<cobj->getId()<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.object_refs table
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "object_refs");
-       luaL_checktype(L, -1, LUA_TTABLE);
-       int objectstable = lua_gettop(L);
-
-       // Get object_refs[id]
-       lua_pushnumber(L, cobj->getId()); // Push id
-       lua_gettable(L, objectstable);
-       // Set object reference to NULL
-       ObjectRef::set_null(L);
-       lua_pop(L, 1); // pop object
-
-       // Set object_refs[id] = nil
-       lua_pushnumber(L, cobj->getId()); // Push id
-       lua_pushnil(L);
-       lua_settable(L, objectstable);
-}
-
-/*
-       misc
-*/
-
-// What scriptapi_run_callbacks does with the return values of callbacks.
-// Regardless of the mode, if only one callback is defined,
-// its return value is the total return value.
-// Modes only affect the case where 0 or >= 2 callbacks are defined.
-enum RunCallbacksMode
-{
-       // Returns the return value of the first callback
-       // Returns nil if list of callbacks is empty
-       RUN_CALLBACKS_MODE_FIRST,
-       // Returns the return value of the last callback
-       // Returns nil if list of callbacks is empty
-       RUN_CALLBACKS_MODE_LAST,
-       // If any callback returns a false value, the first such is returned
-       // Otherwise, the first callback's return value (trueish) is returned
-       // Returns true if list of callbacks is empty
-       RUN_CALLBACKS_MODE_AND,
-       // Like above, but stops calling callbacks (short circuit)
-       // after seeing the first false value
-       RUN_CALLBACKS_MODE_AND_SC,
-       // If any callback returns a true value, the first such is returned
-       // Otherwise, the first callback's return value (falseish) is returned
-       // Returns false if list of callbacks is empty
-       RUN_CALLBACKS_MODE_OR,
-       // Like above, but stops calling callbacks (short circuit)
-       // after seeing the first true value
-       RUN_CALLBACKS_MODE_OR_SC,
-       // Note: "a true value" and "a false value" refer to values that
-       // are converted by lua_toboolean to true or false, respectively.
-};
-
-// Push the list of callbacks (a lua table).
-// Then push nargs arguments.
-// Then call this function, which
-// - runs the callbacks
-// - removes the table and arguments from the lua stack
-// - pushes the return value, computed depending on mode
-static void scriptapi_run_callbacks(lua_State *L, int nargs,
-               RunCallbacksMode mode)
-{
-       // Insert the return value into the lua stack, below the table
-       assert(lua_gettop(L) >= nargs + 1);
-       lua_pushnil(L);
-       lua_insert(L, -(nargs + 1) - 1);
-       // Stack now looks like this:
-       // ... <return value = nil> <table> <arg#1> <arg#2> ... <arg#n>
-
-       int rv = lua_gettop(L) - nargs - 1;
-       int table = rv + 1;
-       int arg = table + 1;
-
-       luaL_checktype(L, table, LUA_TTABLE);
-
-       // Foreach
-       lua_pushnil(L);
-       bool first_loop = true;
-       while(lua_next(L, table) != 0){
-               // key at index -2 and value at index -1
-               luaL_checktype(L, -1, LUA_TFUNCTION);
-               // Call function
-               for(int i = 0; i < nargs; i++)
-                       lua_pushvalue(L, arg+i);
-               if(lua_pcall(L, nargs, 1, 0))
-                       script_error(L, "error: %s", lua_tostring(L, -1));
-
-               // Move return value to designated space in stack
-               // Or pop it
-               if(first_loop){
-                       // Result of first callback is always moved
-                       lua_replace(L, rv);
-                       first_loop = false;
-               } else {
-                       // Otherwise, what happens depends on the mode
-                       if(mode == RUN_CALLBACKS_MODE_FIRST)
-                               lua_pop(L, 1);
-                       else if(mode == RUN_CALLBACKS_MODE_LAST)
-                               lua_replace(L, rv);
-                       else if(mode == RUN_CALLBACKS_MODE_AND ||
-                                       mode == RUN_CALLBACKS_MODE_AND_SC){
-                               if((bool)lua_toboolean(L, rv) == true &&
-                                               (bool)lua_toboolean(L, -1) == false)
-                                       lua_replace(L, rv);
-                               else
-                                       lua_pop(L, 1);
-                       }
-                       else if(mode == RUN_CALLBACKS_MODE_OR ||
-                                       mode == RUN_CALLBACKS_MODE_OR_SC){
-                               if((bool)lua_toboolean(L, rv) == false &&
-                                               (bool)lua_toboolean(L, -1) == true)
-                                       lua_replace(L, rv);
-                               else
-                                       lua_pop(L, 1);
-                       }
-                       else
-                               assert(0);
-               }
-
-               // Handle short circuit modes
-               if(mode == RUN_CALLBACKS_MODE_AND_SC &&
-                               (bool)lua_toboolean(L, rv) == false)
-                       break;
-               else if(mode == RUN_CALLBACKS_MODE_OR_SC &&
-                               (bool)lua_toboolean(L, rv) == true)
-                       break;
-
-               // value removed, keep key for next iteration
-       }
-
-       // Remove stuff from stack, leaving only the return value
-       lua_settop(L, rv);
-
-       // Fix return value in case no callbacks were called
-       if(first_loop){
-               if(mode == RUN_CALLBACKS_MODE_AND ||
-                               mode == RUN_CALLBACKS_MODE_AND_SC){
-                       lua_pop(L, 1);
-                       lua_pushboolean(L, true);
-               }
-               else if(mode == RUN_CALLBACKS_MODE_OR ||
-                               mode == RUN_CALLBACKS_MODE_OR_SC){
-                       lua_pop(L, 1);
-                       lua_pushboolean(L, false);
-               }
-       }
-}
-
-bool scriptapi_on_chat_message(lua_State *L, const std::string &name,
-               const std::string &message)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.registered_on_chat_messages
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_on_chat_messages");
-       // Call callbacks
-       lua_pushstring(L, name.c_str());
-       lua_pushstring(L, message.c_str());
-       scriptapi_run_callbacks(L, 2, RUN_CALLBACKS_MODE_OR_SC);
-       bool ate = lua_toboolean(L, -1);
-       return ate;
-}
-
-void scriptapi_on_shutdown(lua_State *L)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Get registered shutdown hooks
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_on_shutdown");
-       // Call callbacks
-       scriptapi_run_callbacks(L, 0, RUN_CALLBACKS_MODE_FIRST);
-}
-
-void scriptapi_on_newplayer(lua_State *L, ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.registered_on_newplayers
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_on_newplayers");
-       // Call callbacks
-       objectref_get_or_create(L, player);
-       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
-}
-
-void scriptapi_on_dieplayer(lua_State *L, ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.registered_on_dieplayers
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_on_dieplayers");
-       // Call callbacks
-       objectref_get_or_create(L, player);
-       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
-}
-
-bool scriptapi_on_respawnplayer(lua_State *L, ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.registered_on_respawnplayers
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_on_respawnplayers");
-       // Call callbacks
-       objectref_get_or_create(L, player);
-       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_OR);
-       bool positioning_handled_by_some = lua_toboolean(L, -1);
-       return positioning_handled_by_some;
-}
-
-void scriptapi_on_joinplayer(lua_State *L, ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.registered_on_joinplayers
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_on_joinplayers");
-       // Call callbacks
-       objectref_get_or_create(L, player);
-       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
-}
-
-void scriptapi_on_leaveplayer(lua_State *L, ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.registered_on_leaveplayers
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_on_leaveplayers");
-       // Call callbacks
-       objectref_get_or_create(L, player);
-       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
-}
-
-static void get_auth_handler(lua_State *L)
-{
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_auth_handler");
-       if(lua_isnil(L, -1)){
-               lua_pop(L, 1);
-               lua_getfield(L, -1, "builtin_auth_handler");
-       }
-       if(lua_type(L, -1) != LUA_TTABLE)
-               throw LuaError(L, "Authentication handler table not valid");
-}
-
-bool scriptapi_get_auth(lua_State *L, const std::string &playername,
-               std::string *dst_password, std::set<std::string> *dst_privs)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       get_auth_handler(L);
-       lua_getfield(L, -1, "get_auth");
-       if(lua_type(L, -1) != LUA_TFUNCTION)
-               throw LuaError(L, "Authentication handler missing get_auth");
-       lua_pushstring(L, playername.c_str());
-       if(lua_pcall(L, 1, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-
-       // nil = login not allowed
-       if(lua_isnil(L, -1))
-               return false;
-       luaL_checktype(L, -1, LUA_TTABLE);
-
-       std::string password;
-       bool found = getstringfield(L, -1, "password", password);
-       if(!found)
-               throw LuaError(L, "Authentication handler didn't return password");
-       if(dst_password)
-               *dst_password = password;
-
-       lua_getfield(L, -1, "privileges");
-       if(!lua_istable(L, -1))
-               throw LuaError(L,
-                               "Authentication handler didn't return privilege table");
-       if(dst_privs)
-               read_privileges(L, -1, *dst_privs);
-       lua_pop(L, 1);
-
-       return true;
-}
-
-void scriptapi_create_auth(lua_State *L, const std::string &playername,
-               const std::string &password)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       get_auth_handler(L);
-       lua_getfield(L, -1, "create_auth");
-       if(lua_type(L, -1) != LUA_TFUNCTION)
-               throw LuaError(L, "Authentication handler missing create_auth");
-       lua_pushstring(L, playername.c_str());
-       lua_pushstring(L, password.c_str());
-       if(lua_pcall(L, 2, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-bool scriptapi_set_password(lua_State *L, const std::string &playername,
-               const std::string &password)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       get_auth_handler(L);
-       lua_getfield(L, -1, "set_password");
-       if(lua_type(L, -1) != LUA_TFUNCTION)
-               throw LuaError(L, "Authentication handler missing set_password");
-       lua_pushstring(L, playername.c_str());
-       lua_pushstring(L, password.c_str());
-       if(lua_pcall(L, 2, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       return lua_toboolean(L, -1);
-}
-
-/*
-       player
-*/
-
-void scriptapi_on_player_receive_fields(lua_State *L,
-               ServerActiveObject *player,
-               const std::string &formname,
-               const std::map<std::string, std::string> &fields)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.registered_on_chat_messages
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_on_player_receive_fields");
-       // Call callbacks
-       // param 1
-       objectref_get_or_create(L, player);
-       // param 2
-       lua_pushstring(L, formname.c_str());
-       // param 3
-       lua_newtable(L);
-       for(std::map<std::string, std::string>::const_iterator
-                       i = fields.begin(); i != fields.end(); i++){
-               const std::string &name = i->first;
-               const std::string &value = i->second;
-               lua_pushstring(L, name.c_str());
-               lua_pushlstring(L, value.c_str(), value.size());
-               lua_settable(L, -3);
-       }
-       scriptapi_run_callbacks(L, 3, RUN_CALLBACKS_MODE_OR_SC);
-}
-
-/*
-       item callbacks and node callbacks
-*/
-
-// Retrieves minetest.registered_items[name][callbackname]
-// If that is nil or on error, return false and stack is unchanged
-// If that is a function, returns true and pushes the
-// function onto the stack
-// If minetest.registered_items[name] doesn't exist, minetest.nodedef_default
-// is tried instead so unknown items can still be manipulated to some degree
-static bool get_item_callback(lua_State *L,
-               const char *name, const char *callbackname)
-{
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_items");
-       lua_remove(L, -2);
-       luaL_checktype(L, -1, LUA_TTABLE);
-       lua_getfield(L, -1, name);
-       lua_remove(L, -2);
-       // Should be a table
-       if(lua_type(L, -1) != LUA_TTABLE)
-       {
-               // Report error and clean up
-               errorstream<<"Item \""<<name<<"\" not defined"<<std::endl;
-               lua_pop(L, 1);
-
-               // Try minetest.nodedef_default instead
-               lua_getglobal(L, "minetest");
-               lua_getfield(L, -1, "nodedef_default");
-               lua_remove(L, -2);
-               luaL_checktype(L, -1, LUA_TTABLE);
-       }
-       lua_getfield(L, -1, callbackname);
-       lua_remove(L, -2);
-       // Should be a function or nil
-       if(lua_type(L, -1) == LUA_TFUNCTION)
-       {
-               return true;
-       }
-       else if(lua_isnil(L, -1))
-       {
-               lua_pop(L, 1);
-               return false;
-       }
-       else
-       {
-               errorstream<<"Item \""<<name<<"\" callback \""
-                       <<callbackname<<" is not a function"<<std::endl;
-               lua_pop(L, 1);
-               return false;
-       }
-}
-
-bool scriptapi_item_on_drop(lua_State *L, ItemStack &item,
-               ServerActiveObject *dropper, v3f pos)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Push callback function on stack
-       if(!get_item_callback(L, item.name.c_str(), "on_drop"))
-               return false;
-
-       // Call function
-       LuaItemStack::create(L, item);
-       objectref_get_or_create(L, dropper);
-       pushFloatPos(L, pos);
-       if(lua_pcall(L, 3, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       if(!lua_isnil(L, -1))
-               item = read_item(L, -1);
-       return true;
-}
-
-bool scriptapi_item_on_place(lua_State *L, ItemStack &item,
-               ServerActiveObject *placer, const PointedThing &pointed)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Push callback function on stack
-       if(!get_item_callback(L, item.name.c_str(), "on_place"))
-               return false;
-
-       // Call function
-       LuaItemStack::create(L, item);
-       objectref_get_or_create(L, placer);
-       push_pointed_thing(L, pointed);
-       if(lua_pcall(L, 3, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       if(!lua_isnil(L, -1))
-               item = read_item(L, -1);
-       return true;
-}
-
-bool scriptapi_item_on_use(lua_State *L, ItemStack &item,
-               ServerActiveObject *user, const PointedThing &pointed)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Push callback function on stack
-       if(!get_item_callback(L, item.name.c_str(), "on_use"))
-               return false;
-
-       // Call function
-       LuaItemStack::create(L, item);
-       objectref_get_or_create(L, user);
-       push_pointed_thing(L, pointed);
-       if(lua_pcall(L, 3, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       if(!lua_isnil(L, -1))
-               item = read_item(L, -1);
-       return true;
-}
-
-bool scriptapi_node_on_punch(lua_State *L, v3s16 p, MapNode node,
-               ServerActiveObject *puncher)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(), "on_punch"))
-               return false;
-
-       // Call function
-       push_v3s16(L, p);
-       pushnode(L, node, ndef);
-       objectref_get_or_create(L, puncher);
-       if(lua_pcall(L, 3, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       return true;
-}
-
-bool scriptapi_node_on_dig(lua_State *L, v3s16 p, MapNode node,
-               ServerActiveObject *digger)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(), "on_dig"))
-               return false;
-
-       // Call function
-       push_v3s16(L, p);
-       pushnode(L, node, ndef);
-       objectref_get_or_create(L, digger);
-       if(lua_pcall(L, 3, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       return true;
-}
-
-void scriptapi_node_on_construct(lua_State *L, v3s16 p, MapNode node)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(), "on_construct"))
-               return;
-
-       // Call function
-       push_v3s16(L, p);
-       if(lua_pcall(L, 1, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-void scriptapi_node_on_destruct(lua_State *L, v3s16 p, MapNode node)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(), "on_destruct"))
-               return;
-
-       // Call function
-       push_v3s16(L, p);
-       if(lua_pcall(L, 1, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-void scriptapi_node_after_destruct(lua_State *L, v3s16 p, MapNode node)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(), "after_destruct"))
-               return;
-
-       // Call function
-       push_v3s16(L, p);
-       pushnode(L, node, ndef);
-       if(lua_pcall(L, 2, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-bool scriptapi_node_on_timer(lua_State *L, v3s16 p, MapNode node, f32 dtime)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(), "on_timer"))
-               return false;
-
-       // Call function
-       push_v3s16(L, p);
-       lua_pushnumber(L,dtime);
-       if(lua_pcall(L, 2, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       if((bool)lua_isboolean(L,-1) && (bool)lua_toboolean(L,-1) == true)
-               return true;
-
-       return false;
-}
-
-void scriptapi_node_on_receive_fields(lua_State *L, v3s16 p,
-               const std::string &formname,
-               const std::map<std::string, std::string> &fields,
-               ServerActiveObject *sender)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // If node doesn't exist, we don't know what callback to call
-       MapNode node = get_env(L)->getMap().getNodeNoEx(p);
-       if(node.getContent() == CONTENT_IGNORE)
-               return;
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(), "on_receive_fields"))
-               return;
-
-       // Call function
-       // param 1
-       push_v3s16(L, p);
-       // param 2
-       lua_pushstring(L, formname.c_str());
-       // param 3
-       lua_newtable(L);
-       for(std::map<std::string, std::string>::const_iterator
-                       i = fields.begin(); i != fields.end(); i++){
-               const std::string &name = i->first;
-               const std::string &value = i->second;
-               lua_pushstring(L, name.c_str());
-               lua_pushlstring(L, value.c_str(), value.size());
-               lua_settable(L, -3);
-       }
-       // param 4
-       objectref_get_or_create(L, sender);
-       if(lua_pcall(L, 4, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-/*
-       Node metadata inventory callbacks
-*/
-
-// Return number of accepted items to be moved
-int scriptapi_nodemeta_inventory_allow_move(lua_State *L, v3s16 p,
-               const std::string &from_list, int from_index,
-               const std::string &to_list, int to_index,
-               int count, ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // If node doesn't exist, we don't know what callback to call
-       MapNode node = get_env(L)->getMap().getNodeNoEx(p);
-       if(node.getContent() == CONTENT_IGNORE)
-               return 0;
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(),
-                       "allow_metadata_inventory_move"))
-               return count;
-
-       // function(pos, from_list, from_index, to_list, to_index, count, player)
-       // pos
-       push_v3s16(L, p);
-       // from_list
-       lua_pushstring(L, from_list.c_str());
-       // from_index
-       lua_pushinteger(L, from_index + 1);
-       // to_list
-       lua_pushstring(L, to_list.c_str());
-       // to_index
-       lua_pushinteger(L, to_index + 1);
-       // count
-       lua_pushinteger(L, count);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 7, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       if(!lua_isnumber(L, -1))
-               throw LuaError(L, "allow_metadata_inventory_move should return a number");
-       return luaL_checkinteger(L, -1);
-}
-
-// Return number of accepted items to be put
-int scriptapi_nodemeta_inventory_allow_put(lua_State *L, v3s16 p,
-               const std::string &listname, int index, ItemStack &stack,
-               ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // If node doesn't exist, we don't know what callback to call
-       MapNode node = get_env(L)->getMap().getNodeNoEx(p);
-       if(node.getContent() == CONTENT_IGNORE)
-               return 0;
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(),
-                       "allow_metadata_inventory_put"))
-               return stack.count;
-
-       // Call function(pos, listname, index, stack, player)
-       // pos
-       push_v3s16(L, p);
-       // listname
-       lua_pushstring(L, listname.c_str());
-       // index
-       lua_pushinteger(L, index + 1);
-       // stack
-       LuaItemStack::create(L, stack);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 5, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       if(!lua_isnumber(L, -1))
-               throw LuaError(L, "allow_metadata_inventory_put should return a number");
-       return luaL_checkinteger(L, -1);
-}
-
-// Return number of accepted items to be taken
-int scriptapi_nodemeta_inventory_allow_take(lua_State *L, v3s16 p,
-               const std::string &listname, int index, ItemStack &stack,
-               ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // If node doesn't exist, we don't know what callback to call
-       MapNode node = get_env(L)->getMap().getNodeNoEx(p);
-       if(node.getContent() == CONTENT_IGNORE)
-               return 0;
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(),
-                       "allow_metadata_inventory_take"))
-               return stack.count;
-
-       // Call function(pos, listname, index, count, player)
-       // pos
-       push_v3s16(L, p);
-       // listname
-       lua_pushstring(L, listname.c_str());
-       // index
-       lua_pushinteger(L, index + 1);
-       // stack
-       LuaItemStack::create(L, stack);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 5, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       if(!lua_isnumber(L, -1))
-               throw LuaError(L, "allow_metadata_inventory_take should return a number");
-       return luaL_checkinteger(L, -1);
-}
-
-// Report moved items
-void scriptapi_nodemeta_inventory_on_move(lua_State *L, v3s16 p,
-               const std::string &from_list, int from_index,
-               const std::string &to_list, int to_index,
-               int count, ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // If node doesn't exist, we don't know what callback to call
-       MapNode node = get_env(L)->getMap().getNodeNoEx(p);
-       if(node.getContent() == CONTENT_IGNORE)
-               return;
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(),
-                       "on_metadata_inventory_move"))
-               return;
-
-       // function(pos, from_list, from_index, to_list, to_index, count, player)
-       // pos
-       push_v3s16(L, p);
-       // from_list
-       lua_pushstring(L, from_list.c_str());
-       // from_index
-       lua_pushinteger(L, from_index + 1);
-       // to_list
-       lua_pushstring(L, to_list.c_str());
-       // to_index
-       lua_pushinteger(L, to_index + 1);
-       // count
-       lua_pushinteger(L, count);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 7, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-// Report put items
-void scriptapi_nodemeta_inventory_on_put(lua_State *L, v3s16 p,
-               const std::string &listname, int index, ItemStack &stack,
-               ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // If node doesn't exist, we don't know what callback to call
-       MapNode node = get_env(L)->getMap().getNodeNoEx(p);
-       if(node.getContent() == CONTENT_IGNORE)
-               return;
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(),
-                       "on_metadata_inventory_put"))
-               return;
-
-       // Call function(pos, listname, index, stack, player)
-       // pos
-       push_v3s16(L, p);
-       // listname
-       lua_pushstring(L, listname.c_str());
-       // index
-       lua_pushinteger(L, index + 1);
-       // stack
-       LuaItemStack::create(L, stack);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 5, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-// Report taken items
-void scriptapi_nodemeta_inventory_on_take(lua_State *L, v3s16 p,
-               const std::string &listname, int index, ItemStack &stack,
-               ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       INodeDefManager *ndef = get_server(L)->ndef();
-
-       // If node doesn't exist, we don't know what callback to call
-       MapNode node = get_env(L)->getMap().getNodeNoEx(p);
-       if(node.getContent() == CONTENT_IGNORE)
-               return;
-
-       // Push callback function on stack
-       if(!get_item_callback(L, ndef->get(node).name.c_str(),
-                       "on_metadata_inventory_take"))
-               return;
-
-       // Call function(pos, listname, index, stack, player)
-       // pos
-       push_v3s16(L, p);
-       // listname
-       lua_pushstring(L, listname.c_str());
-       // index
-       lua_pushinteger(L, index + 1);
-       // stack
-       LuaItemStack::create(L, stack);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 5, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-/*
-       Detached inventory callbacks
-*/
-
-// Retrieves minetest.detached_inventories[name][callbackname]
-// If that is nil or on error, return false and stack is unchanged
-// If that is a function, returns true and pushes the
-// function onto the stack
-static bool get_detached_inventory_callback(lua_State *L,
-               const std::string &name, const char *callbackname)
-{
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "detached_inventories");
-       lua_remove(L, -2);
-       luaL_checktype(L, -1, LUA_TTABLE);
-       lua_getfield(L, -1, name.c_str());
-       lua_remove(L, -2);
-       // Should be a table
-       if(lua_type(L, -1) != LUA_TTABLE)
-       {
-               errorstream<<"Item \""<<name<<"\" not defined"<<std::endl;
-               lua_pop(L, 1);
-               return false;
-       }
-       lua_getfield(L, -1, callbackname);
-       lua_remove(L, -2);
-       // Should be a function or nil
-       if(lua_type(L, -1) == LUA_TFUNCTION)
-       {
-               return true;
-       }
-       else if(lua_isnil(L, -1))
-       {
-               lua_pop(L, 1);
-               return false;
-       }
-       else
-       {
-               errorstream<<"Detached inventory \""<<name<<"\" callback \""
-                       <<callbackname<<"\" is not a function"<<std::endl;
-               lua_pop(L, 1);
-               return false;
-       }
-}
-
-// Return number of accepted items to be moved
-int scriptapi_detached_inventory_allow_move(lua_State *L,
-               const std::string &name,
-               const std::string &from_list, int from_index,
-               const std::string &to_list, int to_index,
-               int count, ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Push callback function on stack
-       if(!get_detached_inventory_callback(L, name, "allow_move"))
-               return count;
-
-       // function(inv, from_list, from_index, to_list, to_index, count, player)
-       // inv
-       InventoryLocation loc;
-       loc.setDetached(name);
-       InvRef::create(L, loc);
-       // from_list
-       lua_pushstring(L, from_list.c_str());
-       // from_index
-       lua_pushinteger(L, from_index + 1);
-       // to_list
-       lua_pushstring(L, to_list.c_str());
-       // to_index
-       lua_pushinteger(L, to_index + 1);
-       // count
-       lua_pushinteger(L, count);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 7, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       if(!lua_isnumber(L, -1))
-               throw LuaError(L, "allow_move should return a number");
-       return luaL_checkinteger(L, -1);
-}
-
-// Return number of accepted items to be put
-int scriptapi_detached_inventory_allow_put(lua_State *L,
-               const std::string &name,
-               const std::string &listname, int index, ItemStack &stack,
-               ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Push callback function on stack
-       if(!get_detached_inventory_callback(L, name, "allow_put"))
-               return stack.count; // All will be accepted
-
-       // Call function(inv, listname, index, stack, player)
-       // inv
-       InventoryLocation loc;
-       loc.setDetached(name);
-       InvRef::create(L, loc);
-       // listname
-       lua_pushstring(L, listname.c_str());
-       // index
-       lua_pushinteger(L, index + 1);
-       // stack
-       LuaItemStack::create(L, stack);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 5, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       if(!lua_isnumber(L, -1))
-               throw LuaError(L, "allow_put should return a number");
-       return luaL_checkinteger(L, -1);
-}
-
-// Return number of accepted items to be taken
-int scriptapi_detached_inventory_allow_take(lua_State *L,
-               const std::string &name,
-               const std::string &listname, int index, ItemStack &stack,
-               ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Push callback function on stack
-       if(!get_detached_inventory_callback(L, name, "allow_take"))
-               return stack.count; // All will be accepted
-
-       // Call function(inv, listname, index, stack, player)
-       // inv
-       InventoryLocation loc;
-       loc.setDetached(name);
-       InvRef::create(L, loc);
-       // listname
-       lua_pushstring(L, listname.c_str());
-       // index
-       lua_pushinteger(L, index + 1);
-       // stack
-       LuaItemStack::create(L, stack);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 5, 1, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-       if(!lua_isnumber(L, -1))
-               throw LuaError(L, "allow_take should return a number");
-       return luaL_checkinteger(L, -1);
-}
-
-// Report moved items
-void scriptapi_detached_inventory_on_move(lua_State *L,
-               const std::string &name,
-               const std::string &from_list, int from_index,
-               const std::string &to_list, int to_index,
-               int count, ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Push callback function on stack
-       if(!get_detached_inventory_callback(L, name, "on_move"))
-               return;
-
-       // function(inv, from_list, from_index, to_list, to_index, count, player)
-       // inv
-       InventoryLocation loc;
-       loc.setDetached(name);
-       InvRef::create(L, loc);
-       // from_list
-       lua_pushstring(L, from_list.c_str());
-       // from_index
-       lua_pushinteger(L, from_index + 1);
-       // to_list
-       lua_pushstring(L, to_list.c_str());
-       // to_index
-       lua_pushinteger(L, to_index + 1);
-       // count
-       lua_pushinteger(L, count);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 7, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-// Report put items
-void scriptapi_detached_inventory_on_put(lua_State *L,
-               const std::string &name,
-               const std::string &listname, int index, ItemStack &stack,
-               ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Push callback function on stack
-       if(!get_detached_inventory_callback(L, name, "on_put"))
-               return;
-
-       // Call function(inv, listname, index, stack, player)
-       // inv
-       InventoryLocation loc;
-       loc.setDetached(name);
-       InvRef::create(L, loc);
-       // listname
-       lua_pushstring(L, listname.c_str());
-       // index
-       lua_pushinteger(L, index + 1);
-       // stack
-       LuaItemStack::create(L, stack);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 5, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-// Report taken items
-void scriptapi_detached_inventory_on_take(lua_State *L,
-               const std::string &name,
-               const std::string &listname, int index, ItemStack &stack,
-               ServerActiveObject *player)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       StackUnroller stack_unroller(L);
-
-       // Push callback function on stack
-       if(!get_detached_inventory_callback(L, name, "on_take"))
-               return;
-
-       // Call function(inv, listname, index, stack, player)
-       // inv
-       InventoryLocation loc;
-       loc.setDetached(name);
-       InvRef::create(L, loc);
-       // listname
-       lua_pushstring(L, listname.c_str());
-       // index
-       lua_pushinteger(L, index + 1);
-       // stack
-       LuaItemStack::create(L, stack);
-       // player
-       objectref_get_or_create(L, player);
-       if(lua_pcall(L, 5, 0, 0))
-               script_error(L, "error: %s", lua_tostring(L, -1));
-}
-
-/*
-       environment
-*/
-
-void scriptapi_environment_step(lua_State *L, float dtime)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       //infostream<<"scriptapi_environment_step"<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.registered_globalsteps
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_globalsteps");
-       // Call callbacks
-       lua_pushnumber(L, dtime);
-       scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
-}
-
-void scriptapi_environment_on_generated(lua_State *L, v3s16 minp, v3s16 maxp,
-               u32 blockseed)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       //infostream<<"scriptapi_environment_on_generated"<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.registered_on_generateds
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_on_generateds");
-       // Call callbacks
-       push_v3s16(L, minp);
-       push_v3s16(L, maxp);
-       lua_pushnumber(L, blockseed);
-       scriptapi_run_callbacks(L, 3, RUN_CALLBACKS_MODE_FIRST);
-}
-
-/*
-       luaentity
-*/
-
-bool scriptapi_luaentity_add(lua_State *L, u16 id, const char *name)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       verbosestream<<"scriptapi_luaentity_add: id="<<id<<" name=\""
-                       <<name<<"\""<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.registered_entities[name]
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "registered_entities");
-       luaL_checktype(L, -1, LUA_TTABLE);
-       lua_pushstring(L, name);
-       lua_gettable(L, -2);
-       // Should be a table, which we will use as a prototype
-       //luaL_checktype(L, -1, LUA_TTABLE);
-       if(lua_type(L, -1) != LUA_TTABLE){
-               errorstream<<"LuaEntity name \""<<name<<"\" not defined"<<std::endl;
-               return false;
-       }
-       int prototype_table = lua_gettop(L);
-       //dump2(L, "prototype_table");
-
-       // Create entity object
+       // Add tables to minetest
        lua_newtable(L);
-       int object = lua_gettop(L);
-
-       // Set object metatable
-       lua_pushvalue(L, prototype_table);
-       lua_setmetatable(L, -2);
-
-       // Add object reference
-       // This should be userdata with metatable ObjectRef
-       objectref_get(L, id);
-       luaL_checktype(L, -1, LUA_TUSERDATA);
-       if(!luaL_checkudata(L, -1, "ObjectRef"))
-               luaL_typerror(L, -1, "ObjectRef");
-       lua_setfield(L, -2, "object");
-
-       // minetest.luaentities[id] = object
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "luaentities");
-       luaL_checktype(L, -1, LUA_TTABLE);
-       lua_pushnumber(L, id); // Push id
-       lua_pushvalue(L, object); // Copy object to top of stack
-       lua_settable(L, -3);
-
-       return true;
-}
-
-void scriptapi_luaentity_activate(lua_State *L, u16 id,
-               const std::string &staticdata, u32 dtime_s)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       verbosestream<<"scriptapi_luaentity_activate: id="<<id<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.luaentities[id]
-       luaentity_get(L, id);
-       int object = lua_gettop(L);
-
-       // Get on_activate function
-       lua_pushvalue(L, object);
-       lua_getfield(L, -1, "on_activate");
-       if(!lua_isnil(L, -1)){
-               luaL_checktype(L, -1, LUA_TFUNCTION);
-               lua_pushvalue(L, object); // self
-               lua_pushlstring(L, staticdata.c_str(), staticdata.size());
-               lua_pushinteger(L, dtime_s);
-               // Call with 3 arguments, 0 results
-               if(lua_pcall(L, 3, 0, 0))
-                       script_error(L, "error running function on_activate: %s\n",
-                                       lua_tostring(L, -1));
-       }
-}
-
-void scriptapi_luaentity_rm(lua_State *L, u16 id)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       verbosestream<<"scriptapi_luaentity_rm: id="<<id<<std::endl;
-
-       // Get minetest.luaentities table
-       lua_getglobal(L, "minetest");
-       lua_getfield(L, -1, "luaentities");
-       luaL_checktype(L, -1, LUA_TTABLE);
-       int objectstable = lua_gettop(L);
-
-       // Set luaentities[id] = nil
-       lua_pushnumber(L, id); // Push id
-       lua_pushnil(L);
-       lua_settable(L, objectstable);
-
-       lua_pop(L, 2); // pop luaentities, minetest
-}
-
-std::string scriptapi_luaentity_get_staticdata(lua_State *L, u16 id)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       //infostream<<"scriptapi_luaentity_get_staticdata: id="<<id<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.luaentities[id]
-       luaentity_get(L, id);
-       int object = lua_gettop(L);
-
-       // Get get_staticdata function
-       lua_pushvalue(L, object);
-       lua_getfield(L, -1, "get_staticdata");
-       if(lua_isnil(L, -1))
-               return "";
-
-       luaL_checktype(L, -1, LUA_TFUNCTION);
-       lua_pushvalue(L, object); // self
-       // Call with 1 arguments, 1 results
-       if(lua_pcall(L, 1, 1, 0))
-               script_error(L, "error running function get_staticdata: %s\n",
-                               lua_tostring(L, -1));
-
-       size_t len=0;
-       const char *s = lua_tolstring(L, -1, &len);
-       return std::string(s, len);
-}
-
-void scriptapi_luaentity_get_properties(lua_State *L, u16 id,
-               ObjectProperties *prop)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       //infostream<<"scriptapi_luaentity_get_properties: id="<<id<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.luaentities[id]
-       luaentity_get(L, id);
-       //int object = lua_gettop(L);
-
-       // Set default values that differ from ObjectProperties defaults
-       prop->hp_max = 10;
-
-       /* Read stuff */
-
-       prop->hp_max = getintfield_default(L, -1, "hp_max", 10);
-
-       getboolfield(L, -1, "physical", prop->physical);
-
-       getfloatfield(L, -1, "weight", prop->weight);
-
-       lua_getfield(L, -1, "collisionbox");
-       if(lua_istable(L, -1))
-               prop->collisionbox = read_aabb3f(L, -1, 1.0);
-       lua_pop(L, 1);
-
-       getstringfield(L, -1, "visual", prop->visual);
-
-       getstringfield(L, -1, "mesh", prop->mesh);
-
-       // Deprecated: read object properties directly
-       read_object_properties(L, -1, prop);
-
-       // Read initial_properties
-       lua_getfield(L, -1, "initial_properties");
-       read_object_properties(L, -1, prop);
-       lua_pop(L, 1);
-}
-
-void scriptapi_luaentity_step(lua_State *L, u16 id, float dtime)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       //infostream<<"scriptapi_luaentity_step: id="<<id<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.luaentities[id]
-       luaentity_get(L, id);
-       int object = lua_gettop(L);
-       // State: object is at top of stack
-       // Get step function
-       lua_getfield(L, -1, "on_step");
-       if(lua_isnil(L, -1))
-               return;
-       luaL_checktype(L, -1, LUA_TFUNCTION);
-       lua_pushvalue(L, object); // self
-       lua_pushnumber(L, dtime); // dtime
-       // Call with 2 arguments, 0 results
-       if(lua_pcall(L, 2, 0, 0))
-               script_error(L, "error running function 'on_step': %s\n", lua_tostring(L, -1));
-}
-
-// Calls entity:on_punch(ObjectRef puncher, time_from_last_punch,
-//                       tool_capabilities, direction)
-void scriptapi_luaentity_punch(lua_State *L, u16 id,
-               ServerActiveObject *puncher, float time_from_last_punch,
-               const ToolCapabilities *toolcap, v3f dir)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       //infostream<<"scriptapi_luaentity_step: id="<<id<<std::endl;
-       StackUnroller stack_unroller(L);
-
-       // Get minetest.luaentities[id]
-       luaentity_get(L, id);
-       int object = lua_gettop(L);
-       // State: object is at top of stack
-       // Get function
-       lua_getfield(L, -1, "on_punch");
-       if(lua_isnil(L, -1))
-               return;
-       luaL_checktype(L, -1, LUA_TFUNCTION);
-       lua_pushvalue(L, object); // self
-       objectref_get_or_create(L, puncher); // Clicker reference
-       lua_pushnumber(L, time_from_last_punch);
-       push_tool_capabilities(L, *toolcap);
-       push_v3f(L, dir);
-       // Call with 5 arguments, 0 results
-       if(lua_pcall(L, 5, 0, 0))
-               script_error(L, "error running function 'on_punch': %s\n", lua_tostring(L, -1));
-}
-
-// Calls entity:on_rightclick(ObjectRef clicker)
-void scriptapi_luaentity_rightclick(lua_State *L, u16 id,
-               ServerActiveObject *clicker)
-{
-       realitycheck(L);
-       assert(lua_checkstack(L, 20));
-       //infostream<<"scriptapi_luaentity_step: id="<<id<<std::endl;
-       StackUnroller stack_unroller(L);
+       lua_setfield(L, -2, "object_refs");
+       lua_newtable(L);
+       lua_setfield(L, -2, "luaentities");
 
-       // Get minetest.luaentities[id]
-       luaentity_get(L, id);
-       int object = lua_gettop(L);
-       // State: object is at top of stack
-       // Get function
-       lua_getfield(L, -1, "on_rightclick");
-       if(lua_isnil(L, -1))
-               return;
-       luaL_checktype(L, -1, LUA_TFUNCTION);
-       lua_pushvalue(L, object); // self
-       objectref_get_or_create(L, clicker); // Clicker reference
-       // Call with 2 arguments, 0 results
-       if(lua_pcall(L, 2, 0, 0))
-               script_error(L, "error running function 'on_rightclick': %s\n", lua_tostring(L, -1));
+       // Register wrappers
+       LuaItemStack::Register(L);
+       InvRef::Register(L);
+       NodeMetaRef::Register(L);
+       NodeTimerRef::Register(L);
+       ObjectRef::Register(L);
+       EnvRef::Register(L);
+       LuaPseudoRandom::Register(L);
+       LuaPerlinNoise::Register(L);
+       LuaPerlinNoiseMap::Register(L);
 }
-