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luascript.cpp
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luascript.cpp
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//////////////////////////////////////////////////////////////////////
// OpenTibia - an opensource roleplaying game
//////////////////////////////////////////////////////////////////////
// Lua script interface
//////////////////////////////////////////////////////////////////////
// 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 (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.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//////////////////////////////////////////////////////////////////////
#include "otpch.h"
#include <string>
#include <iostream>
#include <iomanip>
#include "luascript.h"
#include "chat.h"
#include "player.h"
#include "item.h"
#include "game.h"
#include "house.h"
#include "housetile.h"
#include "status.h"
#include "combat.h"
#include "spells.h"
#include "condition.h"
#include "monsters.h"
#include "baseevents.h"
#include "iologindata.h"
#include "configmanager.h"
#include "town.h"
#include "vocation.h"
#include "teleport.h"
#include "ban.h"
#include "mounts.h"
#include "databasemanager.h"
extern Chat g_chat;
extern Game g_game;
extern Monsters g_monsters;
extern ConfigManager g_config;
extern Vocations g_vocations;
extern Spells* g_spells;
enum{
EVENT_ID_LOADING = 1,
EVENT_ID_USER = 1000,
};
ScriptEnvironment::ThingMap ScriptEnvironment::m_globalMap;
ScriptEnvironment::AreaMap ScriptEnvironment::m_areaMap;
uint32_t ScriptEnvironment::m_lastAreaId = 0;
ScriptEnvironment::CombatMap ScriptEnvironment::m_combatMap;
uint32_t ScriptEnvironment::m_lastCombatId = 0;
ScriptEnvironment::ConditionMap ScriptEnvironment::m_conditionMap;
uint32_t ScriptEnvironment::m_lastConditionId = 0;
ScriptEnvironment::DBResultMap ScriptEnvironment::m_tempResults;
uint32_t ScriptEnvironment::m_lastResultId = 0;
ScriptEnvironment::StorageMap ScriptEnvironment::m_globalStorageMap;
ScriptEnvironment::TempItemListMap ScriptEnvironment::m_tempItems;
ScriptEnvironment::ScriptEnvironment()
{
m_curNpc = NULL;
resetEnv();
m_lastUID = 70000;
}
ScriptEnvironment::~ScriptEnvironment()
{
resetEnv();
for(CombatMap::iterator it = m_combatMap.begin(); it != m_combatMap.end(); ++it)
delete it->second;
m_combatMap.clear();
for(AreaMap::iterator it = m_areaMap.begin(); it != m_areaMap.end(); ++it)
delete it->second;
m_areaMap.clear();
}
void ScriptEnvironment::resetEnv()
{
m_scriptId = 0;
m_callbackId = 0;
m_timerEvent = false;
m_interface = NULL;
m_localMap.clear();
for(TempItemListMap::iterator mit = m_tempItems.begin(); mit != m_tempItems.end(); ++mit)
{
ItemList& itemList = mit->second;
for(ItemList::iterator it = itemList.begin(); it != itemList.end(); ++it)
{
if((*it)->getParent() == VirtualCylinder::virtualCylinder)
g_game.FreeThing(*it);
}
}
m_tempItems.clear();
if(!m_tempResults.empty())
{
Database* db = Database::getInstance();
for(DBResultMap::iterator it = m_tempResults.begin(); it != m_tempResults.end(); ++it)
{
if(it->second)
db->freeResult(it->second);
}
}
m_tempResults.clear();
m_realPos.x = 0;
m_realPos.y = 0;
m_realPos.z = 0;
}
bool ScriptEnvironment::saveGameState()
{
if(!g_config.getBoolean(ConfigManager::SAVE_GLOBAL_STORAGE))
return true;
Database* db = Database::getInstance();
DBQuery query;
if(!db->executeQuery("DELETE FROM `global_storage`;"))
return false;
DBInsert stmt(db);
stmt.setQuery("INSERT INTO `global_storage` (`key`, `value`) VALUES ");
for(StorageMap::const_iterator it = m_globalStorageMap.begin(); it != m_globalStorageMap.end(); ++it)
{
query << it->first << "," << it->second;
if(!stmt.addRow(query))
return false;
}
return stmt.execute();
}
bool ScriptEnvironment::loadGameState()
{
if(!g_config.getBoolean(ConfigManager::SAVE_GLOBAL_STORAGE))
return true;
Database* db = Database::getInstance();
DBQuery query;
DBResult* result;
query << "SELECT `key`, `value` FROM `global_storage`;";
if((result = db->storeQuery(query.str())))
{
do
{
m_globalStorageMap[result->getDataInt("key")] = result->getDataInt("value");
}
while(result->next());
db->freeResult(result);
}
return true;
}
bool ScriptEnvironment::setCallbackId(int32_t callbackId, LuaScriptInterface* scriptInterface)
{
if(m_callbackId == 0)
{
m_callbackId = callbackId;
m_interface = scriptInterface;
return true;
}
else
{
//nested callbacks are not allowed
if(m_interface)
m_interface->reportErrorFunc("Nested callbacks!");
return false;
}
}
void ScriptEnvironment::getEventInfo(int32_t& scriptId, std::string& desc, LuaScriptInterface*& scriptInterface, int32_t& callbackId, bool& timerEvent) const
{
scriptId = m_scriptId;
desc = m_eventdesc;
scriptInterface = m_interface;
callbackId = m_callbackId;
timerEvent = m_timerEvent;
}
void ScriptEnvironment::addUniqueThing(Thing* thing)
{
Item* item = thing->getItem();
if(item && item->getUniqueId() != 0)
{
int32_t uid = item->getUniqueId();
ThingMap::const_iterator it = m_globalMap.find(uid);
if(it == m_globalMap.end())
m_globalMap[uid] = thing;
else
std::cout << "Duplicate uniqueId " << uid << std::endl;
}
}
void ScriptEnvironment::removeUniqueThing(Thing* thing)
{
Item* item = thing->getItem();
if(item && item->getUniqueId() != 0)
{
int32_t uid = item->getUniqueId();
ThingMap::iterator it = m_globalMap.find(uid);
if(it != m_globalMap.end())
m_globalMap.erase(it);
}
}
uint32_t ScriptEnvironment::addThing(Thing* thing)
{
if(!thing || thing->isRemoved())
return 0;
for(ThingMap::const_iterator it = m_localMap.begin(), end = m_localMap.end(); it != end; ++it)
{
if(it->second == thing)
return it->first;
}
uint32_t newUid;
if(Creature* creature = thing->getCreature())
newUid = creature->getID();
else
{
if(Item* item = thing->getItem())
{
uint32_t uid = item->getUniqueId();
if(uid && item->getTile() == item->getParent())
{
m_localMap[uid] = thing;
return uid;
}
}
++m_lastUID;
if(m_lastUID < 70000)
m_lastUID = 70000;
while(m_localMap.find(m_lastUID) != m_localMap.end())
++m_lastUID;
newUid = m_lastUID;
}
m_localMap[newUid] = thing;
return newUid;
}
void ScriptEnvironment::insertThing(uint32_t uid, Thing* thing)
{
if(m_localMap.find(uid) == m_localMap.end())
m_localMap[uid] = thing;
else
std::cout << std::endl << "Lua Script Error: Thing uid already taken.";
}
Thing* ScriptEnvironment::getThingByUID(uint32_t uid)
{
ThingMap::const_iterator it = m_localMap.find(uid);
if(it != m_localMap.end())
{
Thing* thing = it->second;
if(thing && !thing->isRemoved())
return thing;
}
it = m_globalMap.find(uid);
if(it != m_globalMap.end())
{
Thing* thing = it->second;
if(thing && !thing->isRemoved())
return thing;
}
if(uid >= 0x10000000)
{
Thing* thing = g_game.getCreatureByID(uid);
if(thing && !thing->isRemoved())
{
m_localMap[uid] = thing;
return thing;
}
}
return NULL;
}
Item* ScriptEnvironment::getItemByUID(uint32_t uid)
{
Thing* thing = getThingByUID(uid);
if(thing)
{
if(Item* item = thing->getItem())
return item;
}
return NULL;
}
Container* ScriptEnvironment::getContainerByUID(uint32_t uid)
{
Item* item = getItemByUID(uid);
if(item)
{
if(Container* container = item->getContainer())
return container;
}
return NULL;
}
Creature* ScriptEnvironment::getCreatureByUID(uint32_t uid)
{
Thing* thing = getThingByUID(uid);
if(thing)
{
if(Creature* creature = thing->getCreature())
return creature;
}
return NULL;
}
Player* ScriptEnvironment::getPlayerByUID(uint32_t uid)
{
Creature* creature = getCreatureByUID(uid);
if(creature)
{
if(Player* player = creature->getPlayer())
return player;
}
return NULL;
}
Monster* ScriptEnvironment::getMonsterByUID(uint32_t uid)
{
Creature* creature = getCreatureByUID(uid);
if(creature)
{
if(Monster* monster = creature->getMonster())
return monster;
}
return NULL;
}
Npc* ScriptEnvironment::getNpcByUID(uint32_t uid)
{
Creature* creature = getCreatureByUID(uid);
if(creature)
{
if(Npc* npc = creature->getNpc())
return npc;
}
return NULL;
}
void ScriptEnvironment::removeItemByUID(uint32_t uid)
{
ThingMap::iterator it = m_localMap.find(uid);
if(it != m_localMap.end())
m_localMap.erase(it);
it = m_globalMap.find(uid);
if(it != m_globalMap.end())
m_globalMap.erase(it);
}
uint32_t ScriptEnvironment::addCombatArea(AreaCombat* area)
{
uint32_t newAreaId = m_lastAreaId + 1;
m_areaMap[newAreaId] = area;
m_lastAreaId++;
return newAreaId;
}
AreaCombat* ScriptEnvironment::getCombatArea(uint32_t areaId)
{
AreaMap::const_iterator it = m_areaMap.find(areaId);
if(it != m_areaMap.end())
return it->second;
return NULL;
}
uint32_t ScriptEnvironment::addCombatObject(Combat* combat)
{
uint32_t newCombatId = m_lastCombatId + 1;
m_combatMap[newCombatId] = combat;
m_lastCombatId++;
return newCombatId;
}
Combat* ScriptEnvironment::getCombatObject(uint32_t combatId)
{
CombatMap::iterator it = m_combatMap.find(combatId);
if(it != m_combatMap.end())
return it->second;
return NULL;
}
uint32_t ScriptEnvironment::addConditionObject(Condition* condition)
{
uint32_t newConditionId = m_lastConditionId + 1;
m_conditionMap[newConditionId] = condition;
m_lastConditionId++;
return m_lastConditionId;
}
Condition* ScriptEnvironment::getConditionObject(uint32_t conditionId)
{
ConditionMap::iterator it = m_conditionMap.find(conditionId);
if(it != m_conditionMap.end())
return it->second;
return NULL;
}
void ScriptEnvironment::addTempItem(ScriptEnvironment* env, Item* item)
{
m_tempItems[env].push_back(item);
}
void ScriptEnvironment::removeTempItem(ScriptEnvironment* env, Item* item)
{
ItemList& itemList = m_tempItems[env];
ItemList::iterator it = std::find(itemList.begin(), itemList.end(), item);
if(it != itemList.end())
itemList.erase(it);
}
void ScriptEnvironment::removeTempItem(Item* item)
{
for(TempItemListMap::iterator mit = m_tempItems.begin(); mit != m_tempItems.end(); ++mit)
{
ItemList& itemList = mit->second;
ItemList::iterator it = std::find(itemList.begin(), itemList.end(), item);
if(it != itemList.end())
{
itemList.erase(it);
break;
}
}
}
uint32_t ScriptEnvironment::addResult(DBResult* res)
{
uint32_t newResultId = m_lastResultId + 1;
m_tempResults[newResultId] = res;
m_lastResultId++;
return m_lastResultId;
}
bool ScriptEnvironment::removeResult(uint32_t id)
{
DBResultMap::iterator it = m_tempResults.find(id);
if(it == m_tempResults.end())
return false;
if(it->second)
Database::getInstance()->freeResult(it->second);
m_tempResults.erase(it);
return true;
}
DBResult* ScriptEnvironment::getResultByID(uint32_t id)
{
DBResultMap::iterator it = m_tempResults.find(id);
if(it != m_tempResults.end())
return it->second;
return NULL;
}
void ScriptEnvironment::addGlobalStorageValue(const uint32_t key, const int32_t value)
{
m_globalStorageMap[key] = value;
}
bool ScriptEnvironment::getGlobalStorageValue(const uint32_t key, int32_t& value) const
{
StorageMap::const_iterator it;
it = m_globalStorageMap.find(key);
if(it != m_globalStorageMap.end())
{
value = it->second;
return true;
}
value = 0;
return false;
}
std::string LuaScriptInterface::getErrorDesc(ErrorCode_t code)
{
switch(code)
{
case LUA_ERROR_PLAYER_NOT_FOUND:
return "Player not found";
case LUA_ERROR_CREATURE_NOT_FOUND:
return "Creature not found";
case LUA_ERROR_ITEM_NOT_FOUND:
return "Item not found";
case LUA_ERROR_THING_NOT_FOUND:
return "Thing not found";
case LUA_ERROR_TILE_NOT_FOUND:
return "Tile not found";
case LUA_ERROR_HOUSE_NOT_FOUND:
return "House not found";
case LUA_ERROR_COMBAT_NOT_FOUND:
return "Combat not found";
case LUA_ERROR_CONDITION_NOT_FOUND:
return "Condition not found";
case LUA_ERROR_AREA_NOT_FOUND:
return "Area not found";
case LUA_ERROR_CONTAINER_NOT_FOUND:
return "Container not found";
case LUA_ERROR_VARIANT_NOT_FOUND:
return "Variant not found";
case LUA_ERROR_VARIANT_UNKNOWN:
return "Unknown variant type";
case LUA_ERROR_SPELL_NOT_FOUND:
return "Spell not found";
default:
return "Wrong error code!";
}
}
ScriptEnvironment LuaScriptInterface::m_scriptEnv[16];
int32_t LuaScriptInterface::m_scriptEnvIndex = -1;
LuaScriptInterface::LuaScriptInterface(const std::string& interfaceName)
{
m_luaState = NULL;
m_interfaceName = interfaceName;
m_lastEventTimerId = 1000;
}
LuaScriptInterface::~LuaScriptInterface()
{
for(LuaTimerEvents::iterator it = m_timerEvents.begin(); it != m_timerEvents.end(); ++it)
g_scheduler.stopEvent(it->second.eventId);
closeState();
}
bool LuaScriptInterface::reInitState()
{
closeState();
return initState();
}
/// Same as lua_pcall, but adds stack trace to error strings in called function.
int32_t LuaScriptInterface::protectedCall(lua_State* L, int32_t nargs, int32_t nresults)
{
int error_index = lua_gettop(L) - nargs;
lua_pushcfunction(L, luaErrorHandler);
lua_insert(L, error_index);
int ret = lua_pcall(L, nargs, nresults, error_index);
lua_remove(L, error_index);
return ret;
}
int32_t LuaScriptInterface::loadFile(const std::string& file, Npc* npc /* = NULL*/)
{
//loads file as a chunk at stack top
int32_t ret = luaL_loadfile(m_luaState, file.c_str());
if(ret != 0)
{
m_lastLuaError = popString(m_luaState);
return -1;
}
//check that it is loaded as a function
if(lua_isfunction(m_luaState, -1) == 0)
return -1;
m_loadingFile = file;
this->reserveScriptEnv();
ScriptEnvironment* env = this->getScriptEnv();
env->setScriptId(EVENT_ID_LOADING, this);
env->setNpc(npc);
//execute it
ret = protectedCall(m_luaState, 0, 0);
if(ret != 0)
{
reportError(NULL, popString(m_luaState));
this->releaseScriptEnv();
return -1;
}
this->releaseScriptEnv();
return 0;
}
int32_t LuaScriptInterface::loadBuffer(const std::string& text, Npc* npc /* = NULL*/)
{
//loads file as a chunk at stack top
const char* buffer = text.c_str();
int ret = luaL_loadbuffer(m_luaState, buffer, strlen(buffer), "loadBuffer");
if(ret != 0)
{
m_lastLuaError = popString(m_luaState);
reportError(NULL, m_lastLuaError);
return -1;
}
//check that it is loaded as a function
if(lua_isfunction(m_luaState, -1) == 0)
return -1;
m_loadingFile = "loadBuffer";
this->reserveScriptEnv();
ScriptEnvironment* env = this->getScriptEnv();
env->setScriptId(EVENT_ID_LOADING, this);
env->setNpc(npc);
//execute it
ret = protectedCall(m_luaState, 0, 0);
if(ret != 0)
{
reportError(NULL, popString(m_luaState));
this->releaseScriptEnv();
return -1;
}
this->releaseScriptEnv();
return 0;
}
int32_t LuaScriptInterface::getEvent(const std::string& eventName)
{
//get our events table
lua_getfield(m_luaState, LUA_REGISTRYINDEX, "EVENTS");
if(lua_istable(m_luaState, -1) == 0)
{
lua_pop(m_luaState, 1);
return -1;
}
//get current event function pointer
lua_getglobal(m_luaState, eventName.c_str());
if(lua_isfunction(m_luaState, -1) == 0)
{
lua_pop(m_luaState, 2);
return -1;
}
//save in our events table
lua_pushnumber(m_luaState, m_runningEventId);
lua_pushvalue(m_luaState, -2);
lua_rawset(m_luaState, -4);
lua_pop(m_luaState, 2);
//reset global value of this event
lua_pushnil(m_luaState);
lua_setglobal(m_luaState, eventName.c_str());
m_cacheFiles[m_runningEventId] = m_loadingFile + ":" + eventName;
++m_runningEventId;
return m_runningEventId - 1;
}
const std::string& LuaScriptInterface::getFileById(int32_t scriptId)
{
const static std::string unk = "(Unknown scriptfile)";
if(scriptId != EVENT_ID_LOADING)
{
ScriptsCache::iterator it = m_cacheFiles.find(scriptId);
if(it != m_cacheFiles.end())
return it->second;
else
return unk;
}
else
return m_loadingFile;
}
std::string LuaScriptInterface::getStackTrace(const std::string& error_desc)
{
lua_State* L = m_luaState;
lua_getfield(L, LUA_GLOBALSINDEX, "debug");
if(!lua_istable(L, -1))
{
lua_pop(L, 1);
return error_desc;
}
lua_getfield(L, -1, "traceback");
if(!lua_isfunction(L, -1))
{
lua_pop(L, 1);
return error_desc;
}
lua_pushstring(L, error_desc.c_str());
lua_call(L, 1, 1);
std::string trace(lua_tostring(L, -1));
lua_pop(L, 1);
return trace;
}
void LuaScriptInterface::reportError(const char* function, const std::string& error_desc, bool stack_trace/* = false*/)
{
ScriptEnvironment* env = getScriptEnv();
int32_t scriptId;
int32_t callbackId;
bool timerEvent;
std::string event_desc;
LuaScriptInterface* scriptInterface;
env->getEventInfo(scriptId, event_desc, scriptInterface, callbackId, timerEvent);
std::cout << std::endl << "Lua Script Error: ";
if(scriptInterface)
{
std::cout << "[" << scriptInterface->getInterfaceName() << "] " << std::endl;
if(timerEvent)
std::cout << "in a timer event called from: " << std::endl;
if(callbackId)
std::cout << "in callback: " << scriptInterface->getFileById(callbackId) << std::endl;
std::cout << scriptInterface->getFileById(scriptId) << std::endl;
}
if(!event_desc.empty())
std::cout <<"Event: " << event_desc << std::endl;
if(function)
std::cout << function << "(). ";
if(stack_trace)
std::cout << scriptInterface->getStackTrace(error_desc) << std::endl;
else
std::cout << error_desc << std::endl;
}
bool LuaScriptInterface::pushFunction(int32_t functionId)
{
lua_getfield(m_luaState, LUA_REGISTRYINDEX, "EVENTS");
if(lua_istable(m_luaState, -1) != 0)
{
lua_pushnumber(m_luaState, functionId);
lua_rawget(m_luaState, -2);
lua_remove(m_luaState, -2);
if(lua_isfunction(m_luaState, -1) != 0)
return true;
}
return false;
}
bool LuaScriptInterface::initState()
{
m_luaState = luaL_newstate();
if(!m_luaState)
return false;
luaL_openlibs(m_luaState);
registerFunctions();
if(loadFile("data/global.lua") == -1)
std::cout << "Warning: [LuaScriptInterface::initState] Can not load data/global.lua." << std::endl;
lua_newtable(m_luaState);
lua_setfield(m_luaState, LUA_REGISTRYINDEX, "EVENTS");
m_runningEventId = EVENT_ID_USER;
return true;
}
bool LuaScriptInterface::closeState()
{
if(m_luaState)
{
m_cacheFiles.clear();
LuaTimerEvents::iterator it, end;
for(it = m_timerEvents.begin(), end = m_timerEvents.end(); it != end; ++it)
{
LuaTimerEventDesc& timerEventDesc = it->second;
for(std::list<int32_t>::iterator lt = timerEventDesc.parameters.begin(), lend = timerEventDesc.parameters.end(); lt != lend; ++lt)
luaL_unref(m_luaState, LUA_REGISTRYINDEX, *lt);
timerEventDesc.parameters.clear();
luaL_unref(m_luaState, LUA_REGISTRYINDEX, timerEventDesc.function);
}
m_timerEvents.clear();
lua_close(m_luaState);
}
return true;
}
void LuaScriptInterface::executeTimerEvent(uint32_t eventIndex)
{
LuaTimerEvents::iterator it = m_timerEvents.find(eventIndex);
if(it != m_timerEvents.end())
{
LuaTimerEventDesc& timerEventDesc = it->second;
//push function
lua_rawgeti(m_luaState, LUA_REGISTRYINDEX, timerEventDesc.function);
//push parameters
for(std::list<int32_t>::reverse_iterator rt = timerEventDesc.parameters.rbegin(), rend = timerEventDesc.parameters.rend(); rt != rend; ++rt)
lua_rawgeti(m_luaState, LUA_REGISTRYINDEX, *rt);
//call the function
if(reserveScriptEnv())
{
ScriptEnvironment* env = getScriptEnv();
env->setTimerEvent();
env->setScriptId(timerEventDesc.scriptId, this);
callFunction(timerEventDesc.parameters.size());
releaseScriptEnv();
}
else
std::cout << "[Error] Call stack overflow. LuaScriptInterface::executeTimerEvent" << std::endl;
//free resources
for(std::list<int32_t>::iterator lt = timerEventDesc.parameters.begin(), end = timerEventDesc.parameters.end(); lt != end; ++lt)
luaL_unref(m_luaState, LUA_REGISTRYINDEX, *lt);
timerEventDesc.parameters.clear();
luaL_unref(m_luaState, LUA_REGISTRYINDEX, timerEventDesc.function);
m_timerEvents.erase(it);
}
}
int32_t LuaScriptInterface::luaErrorHandler(lua_State* L)
{
std::string err_msg(lua_tostring(L, -1));
lua_pop(L, 1);
lua_pushstring(L, getScriptEnv()->getScriptInterface()->getStackTrace(err_msg).c_str());
return 1;
}
bool LuaScriptInterface::callFunction(uint32_t nParams)
{
bool result = false;
int32_t size0 = lua_gettop(m_luaState);
int32_t ret = protectedCall(m_luaState, nParams, 1);
if(ret != 0)
LuaScriptInterface::reportError(NULL, LuaScriptInterface::popString(m_luaState));
else
result = LuaScriptInterface::popBoolean(m_luaState);
if((lua_gettop(m_luaState) + (int)nParams + 1) != size0)
LuaScriptInterface::reportError(NULL, "Stack size changed!");
return result;
}
void LuaScriptInterface::pushVariant(lua_State* L, const LuaVariant& var)
{
lua_newtable(L);
setField(L, "type", var.type);
switch(var.type)
{
case VARIANT_NUMBER: setField(L, "number", var.number); break;
case VARIANT_STRING: setField(L, "string", var.text); break;
case VARIANT_TARGETPOSITION:
case VARIANT_POSITION:
{
lua_pushstring(L, "pos");
pushPosition(L, var.pos);
lua_settable(L, -3);
break;
}
case VARIANT_NONE:
break;
}
}
void LuaScriptInterface::pushThing(lua_State* L, Thing* thing, uint32_t thingid)
{
lua_newtable(L);
if(thing && thing->getItem())
{
const Item* item = thing->getItem();
setField(L, "uid", thingid);
setField(L, "itemid", item->getID());
if(item->hasSubType())
setField(L, "type", item->getSubType());
else
setField(L, "type", 0);
setField(L, "actionid", item->getActionId());
}
else if(thing && thing->getCreature())
{
const Creature* creature = thing->getCreature();
setField(L, "uid", thingid);
setField(L, "itemid", 1);
char type;
if(creature->getPlayer())
type = 1;
else if(creature->getMonster())
type = 2;
else
type = 3; //npc
setField(L, "type", type);
setField(L, "actionid", 0);
}
else
{
setField(L, "uid", 0);
setField(L, "itemid", 0);
setField(L, "type", 0);
setField(L, "actionid", 0);
}
}
void LuaScriptInterface::pushPosition(lua_State* L, const PositionEx& position)
{
lua_newtable(L);
setField(L, "z", position.z);
setField(L, "y", position.y);
setField(L, "x", position.x);
setField(L, "stackpos", position.stackpos);
}
void LuaScriptInterface::pushPosition(lua_State* L, const Position& position, uint32_t stackpos)
{
lua_newtable(L);
setField(L, "z", position.z);
setField(L, "y", position.y);
setField(L, "x", position.x);
setField(L, "stackpos", stackpos);
}
void LuaScriptInterface::pushCallback(lua_State* L, int32_t callback)
{
lua_rawgeti(L, LUA_REGISTRYINDEX, callback);
}
LuaVariant LuaScriptInterface::popVariant(lua_State* L)
{
uint32_t type = getField(L, "type");
LuaVariant var;
var.type = (LuaVariantType_t)type;
switch(type)
{
case VARIANT_NUMBER:
{
var.number = getFieldU32(L, "number");
break;
}
case VARIANT_STRING:
{
var.text = getField(L, "string");