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.
*/
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)
{
{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
*/
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);
}
/*
"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);
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);
*/
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)
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;
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);
}
/*
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;
}
}
+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
*/
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)
{
};
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),
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
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;
}
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;
}
};
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}
};
}
/* 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_pushnil(L);
+ lua_pushlstring(L, "", 0);
return 1;
}
// Do it
}
}
+
+/*
+ PerlinNoise
+ */
+
+class LuaPerlinNoise
+{
+private:
+ int seed;
+ int octaves;
+ double persistence;
+ double 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, double a_persistence,
+ double 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);
+ double persistence = luaL_checknumber(L, 3);
+ double 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}
+};
+
/*
EnvRef
*/
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);
// 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;
}
// 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;
}
return 1;
}
- static int gc_object(lua_State *L) {
- EnvRef *o = *(EnvRef **)(lua_touserdata(L, 1));
- delete o;
+
+ // 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);
+ double persistence = luaL_checknumber(L, 4);
+ double 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;
+ }
+
public:
EnvRef(ServerEnvironment *env):
m_env(env)
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),
{0,0}
};
LuaPseudoRandom
*/
+
class LuaPseudoRandom
{
private:
{0,0}
};
+
+
/*
LuaABM
*/
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},
{"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}
};
ObjectRef::Register(L);
EnvRef::Register(L);
LuaPseudoRandom::Register(L);
+ LuaPerlinNoise::Register(L);
}
bool scriptapi_loadmod(lua_State *L, const std::string &scriptpath,
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);
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))
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);
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))
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
*/