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- /*
- Minetest
- Copyright (C) 2013 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 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 Lesser General Public License for more details.
- 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.
- */
- #include "cpp_api/s_entity.h"
- #include "cpp_api/s_internal.h"
- #include "log.h"
- #include "object_properties.h"
- #include "common/c_converter.h"
- #include "common/c_content.h"
- #include "server.h"
- bool ScriptApiEntity::luaentity_Add(u16 id, const char *name)
- {
- SCRIPTAPI_PRECHECKHEADER
- verbosestream<<"scriptapi_luaentity_add: id="<<id<<" name=\""
- <<name<<"\""<<std::endl;
- // Get core.registered_entities[name]
- lua_getglobal(L, "core");
- lua_getfield(L, -1, "registered_entities");
- luaL_checktype(L, -1, LUA_TTABLE);
- lua_pushstring(L, name);
- lua_gettable(L, -2);
- // Should be a table, which we will use as a prototype
- //luaL_checktype(L, -1, LUA_TTABLE);
- if (lua_type(L, -1) != LUA_TTABLE){
- errorstream<<"LuaEntity name \""<<name<<"\" not defined"<<std::endl;
- return false;
- }
- int prototype_table = lua_gettop(L);
- //dump2(L, "prototype_table");
- // Create entity object
- lua_newtable(L);
- int object = lua_gettop(L);
- // Set object metatable
- lua_pushvalue(L, prototype_table);
- lua_setmetatable(L, -2);
- // Add object reference
- // This should be userdata with metatable ObjectRef
- push_objectRef(L, id);
- luaL_checktype(L, -1, LUA_TUSERDATA);
- if (!luaL_checkudata(L, -1, "ObjectRef"))
- luaL_typerror(L, -1, "ObjectRef");
- lua_setfield(L, -2, "object");
- // core.luaentities[id] = object
- lua_getglobal(L, "core");
- lua_getfield(L, -1, "luaentities");
- luaL_checktype(L, -1, LUA_TTABLE);
- lua_pushnumber(L, id); // Push id
- lua_pushvalue(L, object); // Copy object to top of stack
- lua_settable(L, -3);
- return true;
- }
- void ScriptApiEntity::luaentity_Activate(u16 id,
- const std::string &staticdata, u32 dtime_s)
- {
- SCRIPTAPI_PRECHECKHEADER
- verbosestream << "scriptapi_luaentity_activate: id=" << id << std::endl;
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Get core.luaentities[id]
- luaentity_get(L, id);
- int object = lua_gettop(L);
- // Get on_activate function
- lua_getfield(L, -1, "on_activate");
- if (!lua_isnil(L, -1)) {
- luaL_checktype(L, -1, LUA_TFUNCTION);
- lua_pushvalue(L, object); // self
- lua_pushlstring(L, staticdata.c_str(), staticdata.size());
- lua_pushinteger(L, dtime_s);
- setOriginFromTable(object);
- PCALL_RES(lua_pcall(L, 3, 0, error_handler));
- } else {
- lua_pop(L, 1);
- }
- lua_pop(L, 2); // Pop object and error handler
- }
- void ScriptApiEntity::luaentity_Remove(u16 id)
- {
- SCRIPTAPI_PRECHECKHEADER
- verbosestream << "scriptapi_luaentity_rm: id=" << id << std::endl;
- // Get core.luaentities table
- lua_getglobal(L, "core");
- lua_getfield(L, -1, "luaentities");
- luaL_checktype(L, -1, LUA_TTABLE);
- int objectstable = lua_gettop(L);
- // Set luaentities[id] = nil
- lua_pushnumber(L, id); // Push id
- lua_pushnil(L);
- lua_settable(L, objectstable);
- lua_pop(L, 2); // pop luaentities, core
- }
- std::string ScriptApiEntity::luaentity_GetStaticdata(u16 id)
- {
- SCRIPTAPI_PRECHECKHEADER
- //infostream<<"scriptapi_luaentity_get_staticdata: id="<<id<<std::endl;
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Get core.luaentities[id]
- luaentity_get(L, id);
- int object = lua_gettop(L);
- // Get get_staticdata function
- lua_getfield(L, -1, "get_staticdata");
- if (lua_isnil(L, -1)) {
- lua_pop(L, 2); // Pop entity and get_staticdata
- return "";
- }
- luaL_checktype(L, -1, LUA_TFUNCTION);
- lua_pushvalue(L, object); // self
- setOriginFromTable(object);
- PCALL_RES(lua_pcall(L, 1, 1, error_handler));
- lua_remove(L, object);
- lua_remove(L, error_handler);
- size_t len = 0;
- const char *s = lua_tolstring(L, -1, &len);
- lua_pop(L, 1); // Pop static data
- return std::string(s, len);
- }
- void ScriptApiEntity::luaentity_GetProperties(u16 id,
- ObjectProperties *prop)
- {
- SCRIPTAPI_PRECHECKHEADER
- //infostream<<"scriptapi_luaentity_get_properties: id="<<id<<std::endl;
- // Get core.luaentities[id]
- luaentity_get(L, id);
- // Set default values that differ from ObjectProperties defaults
- prop->hp_max = 10;
- /* Read stuff */
- prop->hp_max = getintfield_default(L, -1, "hp_max", 10);
- getboolfield(L, -1, "physical", prop->physical);
- getboolfield(L, -1, "collide_with_objects", prop->collideWithObjects);
- getfloatfield(L, -1, "weight", prop->weight);
- lua_getfield(L, -1, "collisionbox");
- if (lua_istable(L, -1))
- prop->collisionbox = read_aabb3f(L, -1, 1.0);
- lua_pop(L, 1);
- getstringfield(L, -1, "visual", prop->visual);
- getstringfield(L, -1, "mesh", prop->mesh);
- // Deprecated: read object properties directly
- read_object_properties(L, -1, prop, getServer()->idef());
- // Read initial_properties
- lua_getfield(L, -1, "initial_properties");
- read_object_properties(L, -1, prop, getServer()->idef());
- lua_pop(L, 1);
- }
- void ScriptApiEntity::luaentity_Step(u16 id, float dtime)
- {
- SCRIPTAPI_PRECHECKHEADER
- //infostream<<"scriptapi_luaentity_step: id="<<id<<std::endl;
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Get core.luaentities[id]
- luaentity_get(L, id);
- int object = lua_gettop(L);
- // State: object is at top of stack
- // Get step function
- lua_getfield(L, -1, "on_step");
- if (lua_isnil(L, -1)) {
- lua_pop(L, 2); // Pop on_step and entity
- return;
- }
- luaL_checktype(L, -1, LUA_TFUNCTION);
- lua_pushvalue(L, object); // self
- lua_pushnumber(L, dtime); // dtime
- setOriginFromTable(object);
- PCALL_RES(lua_pcall(L, 2, 0, error_handler));
- lua_pop(L, 2); // Pop object and error handler
- }
- // Calls entity:on_punch(ObjectRef puncher, time_from_last_punch,
- // tool_capabilities, direction, damage)
- bool ScriptApiEntity::luaentity_Punch(u16 id,
- ServerActiveObject *puncher, float time_from_last_punch,
- const ToolCapabilities *toolcap, v3f dir, s16 damage)
- {
- SCRIPTAPI_PRECHECKHEADER
- //infostream<<"scriptapi_luaentity_step: id="<<id<<std::endl;
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Get core.luaentities[id]
- luaentity_get(L,id);
- int object = lua_gettop(L);
- // State: object is at top of stack
- // Get function
- lua_getfield(L, -1, "on_punch");
- if (lua_isnil(L, -1)) {
- lua_pop(L, 2); // Pop on_punch and entity
- return false;
- }
- luaL_checktype(L, -1, LUA_TFUNCTION);
- lua_pushvalue(L, object); // self
- objectrefGetOrCreate(L, puncher); // Clicker reference
- lua_pushnumber(L, time_from_last_punch);
- push_tool_capabilities(L, *toolcap);
- push_v3f(L, dir);
- lua_pushnumber(L, damage);
- setOriginFromTable(object);
- PCALL_RES(lua_pcall(L, 6, 1, error_handler));
- bool retval = lua_toboolean(L, -1);
- lua_pop(L, 2); // Pop object and error handler
- return retval;
- }
- // Calls entity[field](ObjectRef self, ObjectRef sao)
- bool ScriptApiEntity::luaentity_run_simple_callback(u16 id,
- ServerActiveObject *sao, const char *field)
- {
- SCRIPTAPI_PRECHECKHEADER
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Get core.luaentities[id]
- luaentity_get(L, id);
- int object = lua_gettop(L);
- // State: object is at top of stack
- // Get function
- lua_getfield(L, -1, field);
- if (lua_isnil(L, -1)) {
- lua_pop(L, 2); // Pop callback field and entity
- return false;
- }
- luaL_checktype(L, -1, LUA_TFUNCTION);
- lua_pushvalue(L, object); // self
- objectrefGetOrCreate(L, sao); // killer reference
- setOriginFromTable(object);
- PCALL_RES(lua_pcall(L, 2, 1, error_handler));
- bool retval = lua_toboolean(L, -1);
- lua_pop(L, 2); // Pop object and error handler
- return retval;
- }
- bool ScriptApiEntity::luaentity_on_death(u16 id, ServerActiveObject *killer)
- {
- return luaentity_run_simple_callback(id, killer, "on_death");
- }
- // Calls entity:on_rightclick(ObjectRef clicker)
- void ScriptApiEntity::luaentity_Rightclick(u16 id, ServerActiveObject *clicker)
- {
- luaentity_run_simple_callback(id, clicker, "on_rightclick");
- }
- void ScriptApiEntity::luaentity_on_attach_child(u16 id, ServerActiveObject *child)
- {
- luaentity_run_simple_callback(id, child, "on_attach_child");
- }
- void ScriptApiEntity::luaentity_on_detach_child(u16 id, ServerActiveObject *child)
- {
- luaentity_run_simple_callback(id, child, "on_detach_child");
- }
- void ScriptApiEntity::luaentity_on_detach(u16 id, ServerActiveObject *parent)
- {
- luaentity_run_simple_callback(id, parent, "on_detach");
- }
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