mirror of
https://github.com/moparisthebest/minetest
synced 2024-11-07 18:05:08 -05:00
294 lines
8.1 KiB
C++
294 lines
8.1 KiB
C++
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/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "scriptapi.h"
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#include "scriptapi_entity.h"
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extern "C" {
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#include <lauxlib.h>
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}
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#include "log.h"
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#include "script.h"
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#include "scriptapi_types.h"
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#include "scriptapi_object.h"
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#include "scriptapi_common.h"
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void luaentity_get(lua_State *L, u16 id)
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{
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// Get minetest.luaentities[i]
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lua_getglobal(L, "minetest");
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lua_getfield(L, -1, "luaentities");
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luaL_checktype(L, -1, LUA_TTABLE);
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lua_pushnumber(L, id);
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lua_gettable(L, -2);
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lua_remove(L, -2); // luaentities
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lua_remove(L, -2); // minetest
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}
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/*
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luaentity
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*/
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bool scriptapi_luaentity_add(lua_State *L, u16 id, const char *name)
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{
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realitycheck(L);
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assert(lua_checkstack(L, 20));
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verbosestream<<"scriptapi_luaentity_add: id="<<id<<" name=\""
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<<name<<"\""<<std::endl;
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StackUnroller stack_unroller(L);
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// Get minetest.registered_entities[name]
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lua_getglobal(L, "minetest");
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lua_getfield(L, -1, "registered_entities");
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luaL_checktype(L, -1, LUA_TTABLE);
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lua_pushstring(L, name);
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lua_gettable(L, -2);
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// Should be a table, which we will use as a prototype
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//luaL_checktype(L, -1, LUA_TTABLE);
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if(lua_type(L, -1) != LUA_TTABLE){
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errorstream<<"LuaEntity name \""<<name<<"\" not defined"<<std::endl;
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return false;
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}
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int prototype_table = lua_gettop(L);
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//dump2(L, "prototype_table");
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// Create entity object
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lua_newtable(L);
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int object = lua_gettop(L);
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// Set object metatable
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lua_pushvalue(L, prototype_table);
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lua_setmetatable(L, -2);
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// Add object reference
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// This should be userdata with metatable ObjectRef
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objectref_get(L, id);
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luaL_checktype(L, -1, LUA_TUSERDATA);
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if(!luaL_checkudata(L, -1, "ObjectRef"))
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luaL_typerror(L, -1, "ObjectRef");
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lua_setfield(L, -2, "object");
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// minetest.luaentities[id] = object
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lua_getglobal(L, "minetest");
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lua_getfield(L, -1, "luaentities");
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luaL_checktype(L, -1, LUA_TTABLE);
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lua_pushnumber(L, id); // Push id
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lua_pushvalue(L, object); // Copy object to top of stack
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lua_settable(L, -3);
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return true;
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}
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void scriptapi_luaentity_activate(lua_State *L, u16 id,
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const std::string &staticdata, u32 dtime_s)
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{
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realitycheck(L);
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assert(lua_checkstack(L, 20));
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verbosestream<<"scriptapi_luaentity_activate: id="<<id<<std::endl;
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StackUnroller stack_unroller(L);
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// Get minetest.luaentities[id]
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luaentity_get(L, id);
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int object = lua_gettop(L);
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// Get on_activate function
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lua_pushvalue(L, object);
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lua_getfield(L, -1, "on_activate");
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if(!lua_isnil(L, -1)){
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luaL_checktype(L, -1, LUA_TFUNCTION);
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lua_pushvalue(L, object); // self
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lua_pushlstring(L, staticdata.c_str(), staticdata.size());
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lua_pushinteger(L, dtime_s);
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// Call with 3 arguments, 0 results
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if(lua_pcall(L, 3, 0, 0))
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script_error(L, "error running function on_activate: %s\n",
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lua_tostring(L, -1));
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}
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}
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void scriptapi_luaentity_rm(lua_State *L, u16 id)
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{
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realitycheck(L);
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assert(lua_checkstack(L, 20));
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verbosestream<<"scriptapi_luaentity_rm: id="<<id<<std::endl;
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// Get minetest.luaentities table
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lua_getglobal(L, "minetest");
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lua_getfield(L, -1, "luaentities");
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luaL_checktype(L, -1, LUA_TTABLE);
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int objectstable = lua_gettop(L);
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// Set luaentities[id] = nil
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lua_pushnumber(L, id); // Push id
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lua_pushnil(L);
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lua_settable(L, objectstable);
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lua_pop(L, 2); // pop luaentities, minetest
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}
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std::string scriptapi_luaentity_get_staticdata(lua_State *L, u16 id)
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{
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realitycheck(L);
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assert(lua_checkstack(L, 20));
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//infostream<<"scriptapi_luaentity_get_staticdata: id="<<id<<std::endl;
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StackUnroller stack_unroller(L);
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// Get minetest.luaentities[id]
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luaentity_get(L, id);
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int object = lua_gettop(L);
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// Get get_staticdata function
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lua_pushvalue(L, object);
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lua_getfield(L, -1, "get_staticdata");
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if(lua_isnil(L, -1))
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return "";
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luaL_checktype(L, -1, LUA_TFUNCTION);
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lua_pushvalue(L, object); // self
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// Call with 1 arguments, 1 results
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if(lua_pcall(L, 1, 1, 0))
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script_error(L, "error running function get_staticdata: %s\n",
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lua_tostring(L, -1));
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size_t len=0;
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const char *s = lua_tolstring(L, -1, &len);
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return std::string(s, len);
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}
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void scriptapi_luaentity_get_properties(lua_State *L, u16 id,
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ObjectProperties *prop)
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{
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realitycheck(L);
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assert(lua_checkstack(L, 20));
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//infostream<<"scriptapi_luaentity_get_properties: id="<<id<<std::endl;
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StackUnroller stack_unroller(L);
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// Get minetest.luaentities[id]
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luaentity_get(L, id);
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//int object = lua_gettop(L);
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// Set default values that differ from ObjectProperties defaults
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prop->hp_max = 10;
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/* Read stuff */
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prop->hp_max = getintfield_default(L, -1, "hp_max", 10);
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getboolfield(L, -1, "physical", prop->physical);
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getfloatfield(L, -1, "weight", prop->weight);
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lua_getfield(L, -1, "collisionbox");
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if(lua_istable(L, -1))
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prop->collisionbox = read_aabb3f(L, -1, 1.0);
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lua_pop(L, 1);
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getstringfield(L, -1, "visual", prop->visual);
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getstringfield(L, -1, "mesh", prop->mesh);
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// Deprecated: read object properties directly
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read_object_properties(L, -1, prop);
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// Read initial_properties
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lua_getfield(L, -1, "initial_properties");
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read_object_properties(L, -1, prop);
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lua_pop(L, 1);
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}
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void scriptapi_luaentity_step(lua_State *L, u16 id, float dtime)
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{
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realitycheck(L);
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assert(lua_checkstack(L, 20));
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//infostream<<"scriptapi_luaentity_step: id="<<id<<std::endl;
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StackUnroller stack_unroller(L);
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// Get minetest.luaentities[id]
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luaentity_get(L, id);
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int object = lua_gettop(L);
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// State: object is at top of stack
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// Get step function
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lua_getfield(L, -1, "on_step");
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if(lua_isnil(L, -1))
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return;
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luaL_checktype(L, -1, LUA_TFUNCTION);
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lua_pushvalue(L, object); // self
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lua_pushnumber(L, dtime); // dtime
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// Call with 2 arguments, 0 results
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if(lua_pcall(L, 2, 0, 0))
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script_error(L, "error running function 'on_step': %s\n", lua_tostring(L, -1));
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}
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// Calls entity:on_punch(ObjectRef puncher, time_from_last_punch,
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// tool_capabilities, direction)
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void scriptapi_luaentity_punch(lua_State *L, u16 id,
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ServerActiveObject *puncher, float time_from_last_punch,
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const ToolCapabilities *toolcap, v3f dir)
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{
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realitycheck(L);
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assert(lua_checkstack(L, 20));
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//infostream<<"scriptapi_luaentity_step: id="<<id<<std::endl;
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StackUnroller stack_unroller(L);
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// Get minetest.luaentities[id]
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luaentity_get(L, id);
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int object = lua_gettop(L);
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// State: object is at top of stack
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// Get function
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lua_getfield(L, -1, "on_punch");
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if(lua_isnil(L, -1))
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return;
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luaL_checktype(L, -1, LUA_TFUNCTION);
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lua_pushvalue(L, object); // self
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objectref_get_or_create(L, puncher); // Clicker reference
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lua_pushnumber(L, time_from_last_punch);
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push_tool_capabilities(L, *toolcap);
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push_v3f(L, dir);
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// Call with 5 arguments, 0 results
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if(lua_pcall(L, 5, 0, 0))
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script_error(L, "error running function 'on_punch': %s\n", lua_tostring(L, -1));
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}
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// Calls entity:on_rightclick(ObjectRef clicker)
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void scriptapi_luaentity_rightclick(lua_State *L, u16 id,
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ServerActiveObject *clicker)
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{
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realitycheck(L);
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assert(lua_checkstack(L, 20));
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//infostream<<"scriptapi_luaentity_step: id="<<id<<std::endl;
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StackUnroller stack_unroller(L);
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// Get minetest.luaentities[id]
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luaentity_get(L, id);
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int object = lua_gettop(L);
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// State: object is at top of stack
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// Get function
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lua_getfield(L, -1, "on_rightclick");
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if(lua_isnil(L, -1))
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return;
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luaL_checktype(L, -1, LUA_TFUNCTION);
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lua_pushvalue(L, object); // self
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objectref_get_or_create(L, clicker); // Clicker reference
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// Call with 2 arguments, 0 results
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if(lua_pcall(L, 2, 0, 0))
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script_error(L, "error running function 'on_rightclick': %s\n", lua_tostring(L, -1));
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}
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