]> git.lizzy.rs Git - minetest.git/blobdiff - src/scriptapi.cpp
Switch the license to be LGPLv2/later, with small parts still remaining as GPLv2...
[minetest.git] / src / scriptapi.cpp
index 7ce10c415f32f64aa9d823eecb3bc59d676cae1d..50e7236c8363b4799473c1741c290bc18745dbf3 100644 (file)
@@ -3,16 +3,16 @@ Minetest-c55
 Copyright (C) 2011 celeron55, Perttu Ahola <celeron55@gmail.com>
 
 This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+GNU Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
@@ -141,14 +141,14 @@ static Server* get_server(lua_State *L)
        return server;
 }
 
-/*static ServerEnvironment* get_env(lua_State *L)
+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)
 {
@@ -418,6 +418,14 @@ struct EnumString es_NodeBoxType[] =
        {0, NULL},
 };
 
+struct EnumString es_CraftMethod[] =
+{
+       {CRAFT_METHOD_NORMAL, "normal"},
+       {CRAFT_METHOD_COOKING, "cooking"},
+       {CRAFT_METHOD_FUEL, "fuel"},
+       {0, NULL},
+};
+
 /*
        C struct <-> Lua table converter functions
 */
@@ -1080,6 +1088,8 @@ static ContentFeatures read_content_features(lua_State *L, int index)
                        "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);
@@ -1096,8 +1106,6 @@ static ContentFeatures read_content_features(lua_State *L, int index)
        getboolfield(L, index, "climbable", f.climbable);
        // Player can build on these
        getboolfield(L, index, "buildable_to", f.buildable_to);
-       // Metadata name of node (eg. "furnace")
-       getstringfield(L, index, "metadata_name", f.metadata_name);
        // Whether the node is non-liquid, source liquid or flowing liquid
        f.liquid_type = (LiquidType)getenumfield(L, index, "liquidtype",
                        es_LiquidType, LIQUID_NONE);
@@ -1173,6 +1181,9 @@ static ContentFeatures read_content_features(lua_State *L, int index)
 */
 
 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)
@@ -1185,15 +1196,7 @@ static void inventory_set_list_from_lua(Inventory *inv, const char *name,
                return;
        }
        // Otherwise set list
-       std::vector<ItemStack> items;
-       luaL_checktype(L, tableindex, LUA_TTABLE);
-       lua_pushnil(L);
-       while(lua_next(L, tableindex) != 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);
-       }
+       std::vector<ItemStack> items = read_items(L, tableindex);
        int listsize = (forcesize != -1) ? forcesize : items.size();
        InventoryList *invlist = inv->addList(name, listsize);
        int index = 0;
@@ -1218,21 +1221,10 @@ static void inventory_get_list_to_lua(Inventory *inv, const char *name,
                lua_pushnil(L);
                return;
        }
-       // Get the table insert function
-       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<invlist->getSize(); i++){
-               ItemStack item = invlist->getItem(i);
-               lua_pushvalue(L, table_insert);
-               lua_pushvalue(L, table);
-               lua_pushstring(L, item.getItemString().c_str());
-               if(lua_pcall(L, 2, 0, 0))
-                       script_error(L, "error: %s", lua_tostring(L, -1));
-       }
+       std::vector<ItemStack> items;
+       for(u32 i=0; i<invlist->getSize(); i++)
+               items.push_back(invlist->getItem(i));
+       push_items(L, items);
 }
 
 /*
@@ -1470,7 +1462,7 @@ class LuaItemStack
                ItemStack &item = o->m_stack;
                u32 takecount = 1;
                if(!lua_isnone(L, 2))
-                       takecount = lua_tointeger(L, 2);
+                       takecount = luaL_checkinteger(L, 2);
                ItemStack taken = item.takeItem(takecount);
                create(L, taken);
                return 1;
@@ -1638,6 +1630,45 @@ static ItemStack read_item(lua_State *L, int index)
        }
 }
 
+static std::vector<ItemStack> read_items(lua_State *L, int index)
+{
+       if(index < 0)
+               index = lua_gettop(L) + 1 + index;
+
+       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;
+}
+
+// creates a table of ItemStacks
+static void push_items(lua_State *L, const std::vector<ItemStack> &items)
+{
+       // Get the table insert function
+       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];
+               lua_pushvalue(L, table_insert);
+               lua_pushvalue(L, table);
+               LuaItemStack::create(L, item);
+               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
+}
+
 /*
        InvRef
 */
@@ -1687,6 +1718,20 @@ class InvRef
                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)
        {
@@ -1913,6 +1958,7 @@ class InvRef
 };
 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_stack),
@@ -1947,22 +1993,17 @@ class NodeMetaRef
                return *(NodeMetaRef**)ud;  // unbox pointer
        }
        
-       static NodeMetadata* getmeta(NodeMetaRef *ref)
+       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 IGenericNodeMetadata* getgenericmeta(NodeMetaRef *ref)
-       {
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL)
-                       return NULL;
-               if(meta->typeId() != NODEMETA_GENERIC)
-                       return NULL;
-               return (IGenericNodeMetadata*)meta;
-       }*/
-
        static void reportMetadataChange(NodeMetaRef *ref)
        {
                // Inform other things that the metadata has changed
@@ -1987,106 +2028,99 @@ class NodeMetaRef
                return 0;
        }
 
-       // get_type(self)
-       static int l_get_type(lua_State *L)
+       // get_string(self, name)
+       static int l_get_string(lua_State *L)
        {
                NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
+               std::string name = luaL_checkstring(L, 2);
+
+               NodeMetadata *meta = getmeta(ref, false);
                if(meta == NULL){
-                       lua_pushnil(L);
+                       lua_pushlstring(L, "", 0);
                        return 1;
                }
-               // Do it
-               lua_pushstring(L, meta->typeName());
+               std::string str = meta->getString(name);
+               lua_pushlstring(L, str.c_str(), str.size());
                return 1;
        }
 
-       // allows_text_input(self)
-       static int l_allows_text_input(lua_State *L)
+       // set_string(self, name, var)
+       static int l_set_string(lua_State *L)
        {
                NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               lua_pushboolean(L, meta->allowsTextInput());
-               return 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);
 
-       // set_text(self, text)
-       static int l_set_text(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               std::string text = luaL_checkstring(L, 2);
-               meta->setText(text);
+               NodeMetadata *meta = getmeta(ref, !str.empty());
+               if(meta == NULL || str == meta->getString(name))
+                       return 0;
+               meta->setString(name, str);
                reportMetadataChange(ref);
                return 0;
        }
 
-       // get_text(self)
-       static int l_get_text(lua_State *L)
+       // get_int(self, name)
+       static int l_get_int(lua_State *L)
        {
                NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               std::string text = meta->getText();
-               lua_pushstring(L, text.c_str());
-               return 1;
-       }
+               std::string name = lua_tostring(L, 2);
 
-       // get_owner(self)
-       static int l_get_owner(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               std::string owner = meta->getOwner();
-               lua_pushstring(L, owner.c_str());
+               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_owner(self, string)
-       static int l_set_owner(lua_State *L)
+       // set_int(self, name, var)
+       static int l_set_int(lua_State *L)
        {
                NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               std::string owner = luaL_checkstring(L, 2);
-               meta->setOwner(owner);
+               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 1;
+               return 0;
        }
 
-       // get_allow_removal(self)
-       static int l_get_allow_removal(lua_State *L)
+       // get_float(self, name)
+       static int l_get_float(lua_State *L)
        {
                NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
+               std::string name = lua_tostring(L, 2);
+
+               NodeMetadata *meta = getmeta(ref, false);
                if(meta == NULL){
-                       lua_pushboolean(L, true);
+                       lua_pushnumber(L, 0);
                        return 1;
                }
-               // Do it
-               lua_pushboolean(L, !meta->nodeRemovalDisabled());
+               std::string str = meta->getString(name);
+               lua_pushnumber(L, stof(str));
                return 1;
        }
 
-       /* IGenericNodeMetadata interface */
-       
-       // set_infotext(self, text)
-       static int l_set_infotext(lua_State *L)
+       // set_float(self, name, var)
+       static int l_set_float(lua_State *L)
        {
                NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               std::string text = luaL_checkstring(L, 2);
-               meta->setInfoText(text);
+               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;
        }
@@ -2095,137 +2129,94 @@ class NodeMetaRef
        static int l_get_inventory(lua_State *L)
        {
                NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
+               getmeta(ref, true);  // try to ensure the metadata exists
                InvRef::createNodeMeta(L, ref->m_p);
                return 1;
        }
-
-       // set_inventory_draw_spec(self, text)
-       static int l_set_inventory_draw_spec(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               std::string text = luaL_checkstring(L, 2);
-               meta->setInventoryDrawSpec(text);
-               reportMetadataChange(ref);
-               return 0;
-       }
-
-       // set_allow_text_input(self, text)
-       static int l_set_allow_text_input(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               bool b = lua_toboolean(L, 2);
-               meta->setAllowTextInput(b);
-               reportMetadataChange(ref);
-               return 0;
-       }
-
-       // set_allow_removal(self, text)
-       static int l_set_allow_removal(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               bool b = lua_toboolean(L, 2);
-               meta->setRemovalDisabled(!b);
-               reportMetadataChange(ref);
-               return 0;
-       }
-
-       // set_enforce_owner(self, text)
-       static int l_set_enforce_owner(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               bool b = lua_toboolean(L, 2);
-               meta->setEnforceOwner(b);
-               reportMetadataChange(ref);
-               return 0;
-       }
-
-       // is_inventory_modified(self)
-       static int l_is_inventory_modified(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               lua_pushboolean(L, meta->isInventoryModified());
-               return 1;
-       }
-
-       // reset_inventory_modified(self)
-       static int l_reset_inventory_modified(lua_State *L)
+       
+       // to_table(self)
+       static int l_to_table(lua_State *L)
        {
                NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               meta->resetInventoryModified();
-               reportMetadataChange(ref);
-               return 0;
-       }
 
-       // is_text_modified(self)
-       static int l_is_text_modified(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               lua_pushboolean(L, meta->isTextModified());
+               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;
        }
 
-       // reset_text_modified(self)
-       static int l_reset_text_modified(lua_State *L)
+       // from_table(self, table)
+       static int l_from_table(lua_State *L)
        {
                NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               meta->resetTextModified();
-               reportMetadataChange(ref);
-               return 0;
-       }
+               int base = 2;
+               
+               if(lua_isnil(L, base)){
+                       // No metadata
+                       ref->m_env->getMap().removeNodeMetadata(ref->m_p);
+                       lua_pushboolean(L, true);
+                       return 1;
+               }
 
-       // set_string(self, name, var)
-       static int l_set_string(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               std::string name = luaL_checkstring(L, 2);
-               size_t len = 0;
-               const char *s = lua_tolstring(L, 3, &len);
-               std::string str(s, len);
-               meta->setString(name, str);
+               // 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);
-               return 0;
-       }
-
-       // get_string(self, name)
-       static int l_get_string(lua_State *L)
-       {
-               NodeMetaRef *ref = checkobject(L, 1);
-               NodeMetadata *meta = getmeta(ref);
-               if(meta == NULL) return 0;
-               // Do it
-               std::string name = luaL_checkstring(L, 2);
-               std::string str = meta->getString(name);
-               lua_pushlstring(L, str.c_str(), str.size());
+               lua_pushboolean(L, true);
                return 1;
        }
 
@@ -2281,25 +2272,15 @@ class NodeMetaRef
 };
 const char NodeMetaRef::className[] = "NodeMetaRef";
 const luaL_reg NodeMetaRef::methods[] = {
-       method(NodeMetaRef, get_type),
-       method(NodeMetaRef, allows_text_input),
-       method(NodeMetaRef, set_text),
-       method(NodeMetaRef, get_text),
-       method(NodeMetaRef, get_owner),
-       method(NodeMetaRef, set_owner),
-       method(NodeMetaRef, get_allow_removal),
-       method(NodeMetaRef, set_infotext),
-       method(NodeMetaRef, get_inventory),
-       method(NodeMetaRef, set_inventory_draw_spec),
-       method(NodeMetaRef, set_allow_text_input),
-       method(NodeMetaRef, set_allow_removal),
-       method(NodeMetaRef, set_enforce_owner),
-       method(NodeMetaRef, is_inventory_modified),
-       method(NodeMetaRef, reset_inventory_modified),
-       method(NodeMetaRef, is_text_modified),
-       method(NodeMetaRef, reset_text_modified),
-       method(NodeMetaRef, set_string),
        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}
 };
 
@@ -2717,6 +2698,15 @@ class ObjectRef
        }
        
        /* 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)
@@ -2724,7 +2714,7 @@ class ObjectRef
                ObjectRef *ref = checkobject(L, 1);
                Player *player = getplayer(ref);
                if(player == NULL){
-                       lua_pushnil(L);
+                       lua_pushlstring(L, "", 0);
                        return 1;
                }
                // Do it
@@ -3032,8 +3022,15 @@ class EnvRef
                // content
                MapNode n = readnode(L, 3, env->getGameDef()->ndef());
                // Do it
+               // Call destructor
+               MapNode n_old = env->getMap().getNodeNoEx(pos);
+               scriptapi_node_on_destruct(L, pos, n_old);
+               // Replace node
                bool succeeded = env->getMap().addNodeWithEvent(pos, n);
                lua_pushboolean(L, succeeded);
+               // Call constructor
+               if(succeeded)
+                       scriptapi_node_on_construct(L, pos, n);
                return 1;
        }
 
@@ -3053,8 +3050,13 @@ class EnvRef
                // pos
                v3s16 pos = read_v3s16(L, 2);
                // Do it
+               // Call destructor
+               MapNode n = env->getMap().getNodeNoEx(pos);
+               scriptapi_node_on_destruct(L, pos, n);
+               // Replace with air
                bool succeeded = env->getMap().removeNodeWithEvent(pos);
                lua_pushboolean(L, succeeded);
+               // Air doesn't require constructor
                return 1;
        }
 
@@ -3346,6 +3348,55 @@ class EnvRef
                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)
@@ -3441,6 +3492,7 @@ const luaL_reg EnvRef::methods[] = {
        method(EnvRef, set_timeofday),
        method(EnvRef, get_timeofday),
        method(EnvRef, find_node_near),
+       method(EnvRef, find_nodes_in_area),
        method(EnvRef, get_perlin),
        {0,0}
 };
@@ -4205,6 +4257,49 @@ static int l_notify_authentication_modified(lua_State *L)
        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;
+}
+
 static const struct luaL_Reg minetest_f [] = {
        {"debug", l_debug},
        {"log", l_log},
@@ -4228,6 +4323,7 @@ static const struct luaL_Reg minetest_f [] = {
        {"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},
        {NULL, NULL}
 };
 
@@ -4885,7 +4981,7 @@ bool scriptapi_item_on_use(lua_State *L, ItemStack &item,
        return true;
 }
 
-bool scriptapi_node_on_punch(lua_State *L, v3s16 pos, MapNode node,
+bool scriptapi_node_on_punch(lua_State *L, v3s16 p, MapNode node,
                ServerActiveObject *puncher)
 {
        realitycheck(L);
@@ -4899,7 +4995,7 @@ bool scriptapi_node_on_punch(lua_State *L, v3s16 pos, MapNode node,
                return false;
 
        // Call function
-       push_v3s16(L, pos);
+       push_v3s16(L, p);
        pushnode(L, node, ndef);
        objectref_get_or_create(L, puncher);
        if(lua_pcall(L, 3, 0, 0))
@@ -4907,7 +5003,7 @@ bool scriptapi_node_on_punch(lua_State *L, v3s16 pos, MapNode node,
        return true;
 }
 
-bool scriptapi_node_on_dig(lua_State *L, v3s16 pos, MapNode node,
+bool scriptapi_node_on_dig(lua_State *L, v3s16 p, MapNode node,
                ServerActiveObject *digger)
 {
        realitycheck(L);
@@ -4921,7 +5017,7 @@ bool scriptapi_node_on_dig(lua_State *L, v3s16 pos, MapNode node,
                return false;
 
        // Call function
-       push_v3s16(L, pos);
+       push_v3s16(L, p);
        pushnode(L, node, ndef);
        objectref_get_or_create(L, digger);
        if(lua_pcall(L, 3, 0, 0))
@@ -4929,6 +5025,178 @@ bool scriptapi_node_on_dig(lua_State *L, v3s16 pos, MapNode node,
        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_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));
+}
+
+void scriptapi_node_on_metadata_inventory_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)
+       push_v3s16(L, p);
+       lua_pushstring(L, from_list.c_str());
+       lua_pushinteger(L, from_index + 1);
+       lua_pushstring(L, to_list.c_str());
+       lua_pushinteger(L, to_index + 1);
+       lua_pushinteger(L, count);
+       objectref_get_or_create(L, player);
+       if(lua_pcall(L, 7, 0, 0))
+               script_error(L, "error: %s", lua_tostring(L, -1));
+}
+
+ItemStack scriptapi_node_on_metadata_inventory_offer(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 stack;
+
+       // Push callback function on stack
+       if(!get_item_callback(L, ndef->get(node).name.c_str(),
+                       "on_metadata_inventory_offer"))
+               return stack;
+
+       // Call function(pos, listname, index, stack, player)
+       push_v3s16(L, p);
+       lua_pushstring(L, listname.c_str());
+       lua_pushinteger(L, index + 1);
+       LuaItemStack::create(L, stack);
+       objectref_get_or_create(L, player);
+       if(lua_pcall(L, 5, 1, 0))
+               script_error(L, "error: %s", lua_tostring(L, -1));
+       return read_item(L, -1);
+}
+
+ItemStack scriptapi_node_on_metadata_inventory_take(lua_State *L, v3s16 p,
+               const std::string &listname, int 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 ItemStack();
+
+       // Push callback function on stack
+       if(!get_item_callback(L, ndef->get(node).name.c_str(),
+                       "on_metadata_inventory_take"))
+               return ItemStack();
+
+       // Call function(pos, listname, index, count, player)
+       push_v3s16(L, p);
+       lua_pushstring(L, listname.c_str());
+       lua_pushinteger(L, index + 1);
+       lua_pushinteger(L, count);
+       objectref_get_or_create(L, player);
+       if(lua_pcall(L, 5, 1, 0))
+               script_error(L, "error: %s", lua_tostring(L, -1));
+       return read_item(L, -1);
+}
+
 /*
        environment
 */