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luascript.cpp
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luascript.cpp
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/**
* The Forgotten Server - a free and open-source MMORPG server emulator
* Copyright (C) 2019 Mark Samman <mark.samman@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
* (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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "otpch.h"
#include <boost/range/adaptor/reversed.hpp>
#include <fmt/format.h>
#include "luascript.h"
#include "chat.h"
#include "player.h"
#include "game.h"
#include "protocolstatus.h"
#include "spells.h"
#include "iologindata.h"
#include "iomapserialize.h"
#include "configmanager.h"
#include "teleport.h"
#include "databasemanager.h"
#include "bed.h"
#include "monster.h"
#include "scheduler.h"
#include "databasetasks.h"
#include "events.h"
#include "movement.h"
#include "globalevent.h"
#include "script.h"
#include "weapons.h"
#include "luavariant.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;
extern Events* g_events;
extern Actions* g_actions;
extern TalkActions* g_talkActions;
extern CreatureEvents* g_creatureEvents;
extern MoveEvents* g_moveEvents;
extern GlobalEvents* g_globalEvents;
extern Scripts* g_scripts;
extern Weapons* g_weapons;
ScriptEnvironment::DBResultMap ScriptEnvironment::tempResults;
uint32_t ScriptEnvironment::lastResultId = 0;
std::multimap<ScriptEnvironment*, Item*> ScriptEnvironment::tempItems;
LuaEnvironment g_luaEnvironment;
ScriptEnvironment::ScriptEnvironment()
{
resetEnv();
}
ScriptEnvironment::~ScriptEnvironment()
{
resetEnv();
}
void ScriptEnvironment::resetEnv()
{
scriptId = 0;
callbackId = 0;
timerEvent = false;
interface = nullptr;
localMap.clear();
tempResults.clear();
auto pair = tempItems.equal_range(this);
auto it = pair.first;
while (it != pair.second) {
Item* item = it->second;
if (item && item->getParent() == VirtualCylinder::virtualCylinder) {
g_game.ReleaseItem(item);
}
it = tempItems.erase(it);
}
}
bool ScriptEnvironment::setCallbackId(int32_t callbackId, LuaScriptInterface* scriptInterface)
{
if (this->callbackId != 0) {
//nested callbacks are not allowed
if (interface) {
reportErrorFunc(interface->getLuaState(), "Nested callbacks!");
}
return false;
}
this->callbackId = callbackId;
interface = scriptInterface;
return true;
}
void ScriptEnvironment::getEventInfo(int32_t& scriptId, LuaScriptInterface*& scriptInterface, int32_t& callbackId, bool& timerEvent) const
{
scriptId = this->scriptId;
scriptInterface = interface;
callbackId = this->callbackId;
timerEvent = this->timerEvent;
}
uint32_t ScriptEnvironment::addThing(Thing* thing)
{
if (!thing || thing->isRemoved()) {
return 0;
}
Creature* creature = thing->getCreature();
if (creature) {
return creature->getID();
}
Item* item = thing->getItem();
if (item && item->hasAttribute(ITEM_ATTRIBUTE_UNIQUEID)) {
return item->getUniqueId();
}
for (const auto& it : localMap) {
if (it.second == item) {
return it.first;
}
}
localMap[++lastUID] = item;
return lastUID;
}
void ScriptEnvironment::insertItem(uint32_t uid, Item* item)
{
auto result = localMap.emplace(uid, item);
if (!result.second) {
std::cout << std::endl << "Lua Script Error: Thing uid already taken.";
}
}
Thing* ScriptEnvironment::getThingByUID(uint32_t uid)
{
if (uid >= 0x10000000) {
return g_game.getCreatureByID(uid);
}
if (uid <= std::numeric_limits<uint16_t>::max()) {
Item* item = g_game.getUniqueItem(uid);
if (item && !item->isRemoved()) {
return item;
}
return nullptr;
}
auto it = localMap.find(uid);
if (it != localMap.end()) {
Item* item = it->second;
if (!item->isRemoved()) {
return item;
}
}
return nullptr;
}
Item* ScriptEnvironment::getItemByUID(uint32_t uid)
{
Thing* thing = getThingByUID(uid);
if (!thing) {
return nullptr;
}
return thing->getItem();
}
Container* ScriptEnvironment::getContainerByUID(uint32_t uid)
{
Item* item = getItemByUID(uid);
if (!item) {
return nullptr;
}
return item->getContainer();
}
void ScriptEnvironment::removeItemByUID(uint32_t uid)
{
if (uid <= std::numeric_limits<uint16_t>::max()) {
g_game.removeUniqueItem(uid);
return;
}
auto it = localMap.find(uid);
if (it != localMap.end()) {
localMap.erase(it);
}
}
void ScriptEnvironment::addTempItem(Item* item)
{
tempItems.emplace(this, item);
}
void ScriptEnvironment::removeTempItem(Item* item)
{
for (auto it = tempItems.begin(), end = tempItems.end(); it != end; ++it) {
if (it->second == item) {
tempItems.erase(it);
break;
}
}
}
uint32_t ScriptEnvironment::addResult(DBResult_ptr res)
{
tempResults[++lastResultId] = res;
return lastResultId;
}
bool ScriptEnvironment::removeResult(uint32_t id)
{
auto it = tempResults.find(id);
if (it == tempResults.end()) {
return false;
}
tempResults.erase(it);
return true;
}
DBResult_ptr ScriptEnvironment::getResultByID(uint32_t id)
{
auto it = tempResults.find(id);
if (it == tempResults.end()) {
return nullptr;
}
return it->second;
}
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 "Bad error code";
}
}
ScriptEnvironment LuaScriptInterface::scriptEnv[16];
int32_t LuaScriptInterface::scriptEnvIndex = -1;
LuaScriptInterface::LuaScriptInterface(std::string interfaceName) : interfaceName(std::move(interfaceName))
{
if (!g_luaEnvironment.getLuaState()) {
g_luaEnvironment.initState();
}
}
LuaScriptInterface::~LuaScriptInterface()
{
closeState();
}
bool LuaScriptInterface::reInitState()
{
g_luaEnvironment.clearCombatObjects(this);
g_luaEnvironment.clearAreaObjects(this);
closeState();
return initState();
}
/// Same as lua_pcall, but adds stack trace to error strings in called function.
int LuaScriptInterface::protectedCall(lua_State* L, int nargs, int 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 /* = nullptr*/)
{
//loads file as a chunk at stack top
int ret = luaL_loadfile(luaState, file.c_str());
if (ret != 0) {
lastLuaError = popString(luaState);
return -1;
}
//check that it is loaded as a function
if (!isFunction(luaState, -1)) {
lua_pop(luaState, 1);
return -1;
}
loadingFile = file;
if (!reserveScriptEnv()) {
lua_pop(luaState, 1);
return -1;
}
ScriptEnvironment* env = getScriptEnv();
env->setScriptId(EVENT_ID_LOADING, this);
env->setNpc(npc);
//execute it
ret = protectedCall(luaState, 0, 0);
if (ret != 0) {
reportError(nullptr, popString(luaState));
resetScriptEnv();
return -1;
}
resetScriptEnv();
return 0;
}
int32_t LuaScriptInterface::getEvent(const std::string& eventName)
{
//get our events table
lua_rawgeti(luaState, LUA_REGISTRYINDEX, eventTableRef);
if (!isTable(luaState, -1)) {
lua_pop(luaState, 1);
return -1;
}
//get current event function pointer
lua_getglobal(luaState, eventName.c_str());
if (!isFunction(luaState, -1)) {
lua_pop(luaState, 2);
return -1;
}
//save in our events table
lua_pushvalue(luaState, -1);
lua_rawseti(luaState, -3, runningEventId);
lua_pop(luaState, 2);
//reset global value of this event
lua_pushnil(luaState);
lua_setglobal(luaState, eventName.c_str());
cacheFiles[runningEventId] = loadingFile + ":" + eventName;
return runningEventId++;
}
int32_t LuaScriptInterface::getEvent()
{
//check if function is on the stack
if (!isFunction(luaState, -1)) {
return -1;
}
//get our events table
lua_rawgeti(luaState, LUA_REGISTRYINDEX, eventTableRef);
if (!isTable(luaState, -1)) {
lua_pop(luaState, 1);
return -1;
}
//save in our events table
lua_pushvalue(luaState, -2);
lua_rawseti(luaState, -2, runningEventId);
lua_pop(luaState, 2);
cacheFiles[runningEventId] = loadingFile + ":callback";
return runningEventId++;
}
int32_t LuaScriptInterface::getMetaEvent(const std::string& globalName, const std::string& eventName)
{
//get our events table
lua_rawgeti(luaState, LUA_REGISTRYINDEX, eventTableRef);
if (!isTable(luaState, -1)) {
lua_pop(luaState, 1);
return -1;
}
//get current event function pointer
lua_getglobal(luaState, globalName.c_str());
lua_getfield(luaState, -1, eventName.c_str());
if (!isFunction(luaState, -1)) {
lua_pop(luaState, 3);
return -1;
}
//save in our events table
lua_pushvalue(luaState, -1);
lua_rawseti(luaState, -4, runningEventId);
lua_pop(luaState, 1);
//reset global value of this event
lua_pushnil(luaState);
lua_setfield(luaState, -2, eventName.c_str());
lua_pop(luaState, 2);
cacheFiles[runningEventId] = loadingFile + ":" + globalName + "@" + eventName;
return runningEventId++;
}
const std::string& LuaScriptInterface::getFileById(int32_t scriptId)
{
if (scriptId == EVENT_ID_LOADING) {
return loadingFile;
}
auto it = cacheFiles.find(scriptId);
if (it == cacheFiles.end()) {
static const std::string& unk = "(Unknown scriptfile)";
return unk;
}
return it->second;
}
std::string LuaScriptInterface::getStackTrace(lua_State* L, const std::string& error_desc)
{
lua_getglobal(L, "debug");
if (!isTable(L, -1)) {
lua_pop(L, 1);
return error_desc;
}
lua_getfield(L, -1, "traceback");
if (!isFunction(L, -1)) {
lua_pop(L, 2);
return error_desc;
}
lua_replace(L, -2);
pushString(L, error_desc);
lua_call(L, 1, 1);
return popString(L);
}
void LuaScriptInterface::reportError(const char* function, const std::string& error_desc, lua_State* L /*= nullptr*/, bool stack_trace /*= false*/)
{
int32_t scriptId;
int32_t callbackId;
bool timerEvent;
LuaScriptInterface* scriptInterface;
getScriptEnv()->getEventInfo(scriptId, 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 (function) {
std::cout << function << "(). ";
}
if (L && stack_trace) {
std::cout << getStackTrace(L, error_desc) << std::endl;
} else {
std::cout << error_desc << std::endl;
}
}
bool LuaScriptInterface::pushFunction(int32_t functionId)
{
lua_rawgeti(luaState, LUA_REGISTRYINDEX, eventTableRef);
if (!isTable(luaState, -1)) {
return false;
}
lua_rawgeti(luaState, -1, functionId);
lua_replace(luaState, -2);
return isFunction(luaState, -1);
}
bool LuaScriptInterface::initState()
{
luaState = g_luaEnvironment.getLuaState();
if (!luaState) {
return false;
}
lua_newtable(luaState);
eventTableRef = luaL_ref(luaState, LUA_REGISTRYINDEX);
runningEventId = EVENT_ID_USER;
return true;
}
bool LuaScriptInterface::closeState()
{
if (!g_luaEnvironment.getLuaState() || !luaState) {
return false;
}
cacheFiles.clear();
if (eventTableRef != -1) {
luaL_unref(luaState, LUA_REGISTRYINDEX, eventTableRef);
eventTableRef = -1;
}
luaState = nullptr;
return true;
}
int LuaScriptInterface::luaErrorHandler(lua_State* L)
{
const std::string& errorMessage = popString(L);
pushString(L, LuaScriptInterface::getStackTrace(L, errorMessage));
return 1;
}
bool LuaScriptInterface::callFunction(int params)
{
bool result = false;
int size = lua_gettop(luaState);
if (protectedCall(luaState, params, 1) != 0) {
LuaScriptInterface::reportError(nullptr, LuaScriptInterface::getString(luaState, -1));
} else {
result = LuaScriptInterface::getBoolean(luaState, -1);
}
lua_pop(luaState, 1);
if ((lua_gettop(luaState) + params + 1) != size) {
LuaScriptInterface::reportError(nullptr, "Stack size changed!");
}
resetScriptEnv();
return result;
}
void LuaScriptInterface::callVoidFunction(int params)
{
int size = lua_gettop(luaState);
if (protectedCall(luaState, params, 0) != 0) {
LuaScriptInterface::reportError(nullptr, LuaScriptInterface::popString(luaState));
}
if ((lua_gettop(luaState) + params + 1) != size) {
LuaScriptInterface::reportError(nullptr, "Stack size changed!");
}
resetScriptEnv();
}
void LuaScriptInterface::pushVariant(lua_State* L, const LuaVariant& var)
{
lua_createtable(L, 0, 2);
setField(L, "type", var.type());
switch (var.type()) {
case VARIANT_NUMBER:
setField(L, "number", var.getNumber());
break;
case VARIANT_STRING:
setField(L, "string", var.getString());
break;
case VARIANT_TARGETPOSITION:
pushPosition(L, var.getTargetPosition());
lua_setfield(L, -2, "pos");
break;
case VARIANT_POSITION: {
pushPosition(L, var.getPosition());
lua_setfield(L, -2, "pos");
break;
}
default:
break;
}
setMetatable(L, -1, "Variant");
}
void LuaScriptInterface::pushThing(lua_State* L, Thing* thing)
{
if (!thing) {
lua_createtable(L, 0, 4);
setField(L, "uid", 0);
setField(L, "itemid", 0);
setField(L, "actionid", 0);
setField(L, "type", 0);
return;
}
if (Item* item = thing->getItem()) {
pushUserdata<Item>(L, item);
setItemMetatable(L, -1, item);
} else if (Creature* creature = thing->getCreature()) {
pushUserdata<Creature>(L, creature);
setCreatureMetatable(L, -1, creature);
} else {
lua_pushnil(L);
}
}
void LuaScriptInterface::pushCylinder(lua_State* L, Cylinder* cylinder)
{
if (Creature* creature = cylinder->getCreature()) {
pushUserdata<Creature>(L, creature);
setCreatureMetatable(L, -1, creature);
} else if (Item* parentItem = cylinder->getItem()) {
pushUserdata<Item>(L, parentItem);
setItemMetatable(L, -1, parentItem);
} else if (Tile* tile = cylinder->getTile()) {
pushUserdata<Tile>(L, tile);
setMetatable(L, -1, "Tile");
} else if (cylinder == VirtualCylinder::virtualCylinder) {
pushBoolean(L, true);
} else {
lua_pushnil(L);
}
}
void LuaScriptInterface::pushString(lua_State* L, const std::string& value)
{
lua_pushlstring(L, value.c_str(), value.length());
}
void LuaScriptInterface::pushCallback(lua_State* L, int32_t callback)
{
lua_rawgeti(L, LUA_REGISTRYINDEX, callback);
}
std::string LuaScriptInterface::popString(lua_State* L)
{
if (lua_gettop(L) == 0) {
return std::string();
}
std::string str(getString(L, -1));
lua_pop(L, 1);
return str;
}
int32_t LuaScriptInterface::popCallback(lua_State* L)
{
return luaL_ref(L, LUA_REGISTRYINDEX);
}
// Metatables
void LuaScriptInterface::setMetatable(lua_State* L, int32_t index, const std::string& name)
{
luaL_getmetatable(L, name.c_str());
lua_setmetatable(L, index - 1);
}
void LuaScriptInterface::setWeakMetatable(lua_State* L, int32_t index, const std::string& name)
{
static std::set<std::string> weakObjectTypes;
const std::string& weakName = name + "_weak";
auto result = weakObjectTypes.emplace(name);
if (result.second) {
luaL_getmetatable(L, name.c_str());
int childMetatable = lua_gettop(L);
luaL_newmetatable(L, weakName.c_str());
int metatable = lua_gettop(L);
static const std::vector<std::string> methodKeys = {"__index", "__metatable", "__eq"};
for (const std::string& metaKey : methodKeys) {
lua_getfield(L, childMetatable, metaKey.c_str());
lua_setfield(L, metatable, metaKey.c_str());
}
static const std::vector<int> methodIndexes = {'h', 'p', 't'};
for (int metaIndex : methodIndexes) {
lua_rawgeti(L, childMetatable, metaIndex);
lua_rawseti(L, metatable, metaIndex);
}
lua_pushnil(L);
lua_setfield(L, metatable, "__gc");
lua_remove(L, childMetatable);
} else {
luaL_getmetatable(L, weakName.c_str());
}
lua_setmetatable(L, index - 1);
}
void LuaScriptInterface::setItemMetatable(lua_State* L, int32_t index, const Item* item)
{
if (item->getContainer()) {
luaL_getmetatable(L, "Container");
} else if (item->getTeleport()) {
luaL_getmetatable(L, "Teleport");
} else {
luaL_getmetatable(L, "Item");
}
lua_setmetatable(L, index - 1);
}
void LuaScriptInterface::setCreatureMetatable(lua_State* L, int32_t index, const Creature* creature)
{
if (creature->getPlayer()) {
luaL_getmetatable(L, "Player");
} else if (creature->getMonster()) {
luaL_getmetatable(L, "Monster");
} else {
luaL_getmetatable(L, "Npc");
}
lua_setmetatable(L, index - 1);
}
// Get
std::string LuaScriptInterface::getString(lua_State* L, int32_t arg)
{
size_t len;
const char* c_str = lua_tolstring(L, arg, &len);
if (!c_str || len == 0) {
return std::string();
}
return std::string(c_str, len);
}
Position LuaScriptInterface::getPosition(lua_State* L, int32_t arg, int32_t& stackpos)
{
Position position;
position.x = getField<uint16_t>(L, arg, "x");
position.y = getField<uint16_t>(L, arg, "y");
position.z = getField<uint8_t>(L, arg, "z");
lua_getfield(L, arg, "stackpos");
if (lua_isnil(L, -1) == 1) {
stackpos = 0;
} else {
stackpos = getNumber<int32_t>(L, -1);
}
lua_pop(L, 4);
return position;
}
Position LuaScriptInterface::getPosition(lua_State* L, int32_t arg)
{
Position position;
position.x = getField<uint16_t>(L, arg, "x");
position.y = getField<uint16_t>(L, arg, "y");
position.z = getField<uint8_t>(L, arg, "z");
lua_pop(L, 3);
return position;
}
Outfit_t LuaScriptInterface::getOutfit(lua_State* L, int32_t arg)
{
Outfit_t outfit;
outfit.lookAddons = getField<uint8_t>(L, arg, "lookAddons");
outfit.lookFeet = getField<uint8_t>(L, arg, "lookFeet");
outfit.lookLegs = getField<uint8_t>(L, arg, "lookLegs");
outfit.lookBody = getField<uint8_t>(L, arg, "lookBody");
outfit.lookHead = getField<uint8_t>(L, arg, "lookHead");
outfit.lookTypeEx = getField<uint16_t>(L, arg, "lookTypeEx");
outfit.lookType = getField<uint16_t>(L, arg, "lookType");
lua_pop(L, 8);
return outfit;
}
Outfit LuaScriptInterface::getOutfitClass(lua_State* L, int32_t arg)
{
uint16_t lookType = getField<uint16_t>(L, arg, "lookType");
const std::string& name = getFieldString(L, arg, "name");
bool premium = getField<uint8_t>(L, arg, "premium") == 1;
bool unlocked = getField<uint8_t>(L, arg, "unlocked") == 1;
lua_pop(L, 4);
return Outfit(name, lookType, premium, unlocked);
}
static LuaVariant getVariant(lua_State* L, int32_t arg)
{
LuaVariant var;
switch (LuaScriptInterface::getField<LuaVariantType_t>(L, arg, "type")) {
case VARIANT_NUMBER: {
var.setNumber(LuaScriptInterface::getField<uint32_t>(L, arg, "number"));
lua_pop(L, 2);
break;
}
case VARIANT_STRING: {
var.setString(LuaScriptInterface::getFieldString(L, arg, "string"));
lua_pop(L, 2);
break;
}
case VARIANT_POSITION:
lua_getfield(L, arg, "pos");
var.setPosition(LuaScriptInterface::getPosition(L, lua_gettop(L)));
lua_pop(L, 2);
break;
case VARIANT_TARGETPOSITION: {
lua_getfield(L, arg, "pos");
var.setTargetPosition(LuaScriptInterface::getPosition(L, lua_gettop(L)));
lua_pop(L, 2);
break;
}
default: {
var = {};
lua_pop(L, 1);
break;
}
}
return var;
}
InstantSpell* LuaScriptInterface::getInstantSpell(lua_State* L, int32_t arg)
{
InstantSpell* spell = g_spells->getInstantSpellByName(getFieldString(L, arg, "name"));
lua_pop(L, 1);
return spell;
}
Thing* LuaScriptInterface::getThing(lua_State* L, int32_t arg)
{
Thing* thing;
if (lua_getmetatable(L, arg) != 0) {
lua_rawgeti(L, -1, 't');
switch (getNumber<uint32_t>(L, -1)) {
case LuaData_Item:
thing = getUserdata<Item>(L, arg);
break;
case LuaData_Container:
thing = getUserdata<Container>(L, arg);
break;
case LuaData_Teleport:
thing = getUserdata<Teleport>(L, arg);
break;
case LuaData_Player:
thing = getUserdata<Player>(L, arg);
break;
case LuaData_Monster:
thing = getUserdata<Monster>(L, arg);
break;
case LuaData_Npc:
thing = getUserdata<Npc>(L, arg);
break;
default:
thing = nullptr;
break;
}
lua_pop(L, 2);
} else {
thing = getScriptEnv()->getThingByUID(getNumber<uint32_t>(L, arg));
}
return thing;
}
Creature* LuaScriptInterface::getCreature(lua_State* L, int32_t arg)
{
if (isUserdata(L, arg)) {
return getUserdata<Creature>(L, arg);
}
return g_game.getCreatureByID(getNumber<uint32_t>(L, arg));
}
Player* LuaScriptInterface::getPlayer(lua_State* L, int32_t arg)
{
if (isUserdata(L, arg)) {
return getUserdata<Player>(L, arg);
}
return g_game.getPlayerByID(getNumber<uint32_t>(L, arg));
}
std::string LuaScriptInterface::getFieldString(lua_State* L, int32_t arg, const std::string& key)
{
lua_getfield(L, arg, key.c_str());
return getString(L, -1);
}
LuaDataType LuaScriptInterface::getUserdataType(lua_State* L, int32_t arg)
{
if (lua_getmetatable(L, arg) == 0) {
return LuaData_Unknown;
}
lua_rawgeti(L, -1, 't');
LuaDataType type = getNumber<LuaDataType>(L, -1);
lua_pop(L, 2);
return type;
}
// Push
void LuaScriptInterface::pushBoolean(lua_State* L, bool value)
{
lua_pushboolean(L, value ? 1 : 0);
}
void LuaScriptInterface::pushCombatDamage(lua_State* L, const CombatDamage& damage)
{
lua_pushnumber(L, damage.primary.value);
lua_pushnumber(L, damage.primary.type);
lua_pushnumber(L, damage.secondary.value);
lua_pushnumber(L, damage.secondary.type);
lua_pushnumber(L, damage.origin);
}
void LuaScriptInterface::pushInstantSpell(lua_State* L, const InstantSpell& spell)
{
lua_createtable(L, 0, 7);
setField(L, "name", spell.getName());
setField(L, "words", spell.getWords());
setField(L, "level", spell.getLevel());
setField(L, "mlevel", spell.getMagicLevel());
setField(L, "mana", spell.getMana());
setField(L, "manapercent", spell.getManaPercent());
setField(L, "params", spell.getHasParam());
setMetatable(L, -1, "Spell");
}
void LuaScriptInterface::pushPosition(lua_State* L, const Position& position, int32_t stackpos/* = 0*/)
{
lua_createtable(L, 0, 4);
setField(L, "x", position.x);
setField(L, "y", position.y);
setField(L, "z", position.z);
setField(L, "stackpos", stackpos);
setMetatable(L, -1, "Position");
}
void LuaScriptInterface::pushOutfit(lua_State* L, const Outfit_t& outfit)
{
lua_createtable(L, 0, 8);
setField(L, "lookType", outfit.lookType);
setField(L, "lookTypeEx", outfit.lookTypeEx);
setField(L, "lookHead", outfit.lookHead);
setField(L, "lookBody", outfit.lookBody);
setField(L, "lookLegs", outfit.lookLegs);
setField(L, "lookFeet", outfit.lookFeet);
setField(L, "lookAddons", outfit.lookAddons);
}
void LuaScriptInterface::pushOutfit(lua_State* L, const Outfit* outfit)
{
lua_createtable(L, 0, 4);
setField(L, "lookType", outfit->lookType);
setField(L, "name", outfit->name);
setField(L, "premium", outfit->premium);
setField(L, "unlocked", outfit->unlocked);
setMetatable(L, -1, "Outfit");
}
void LuaScriptInterface::pushLoot(lua_State* L, const std::vector<LootBlock>& lootList)
{
lua_createtable(L, lootList.size(), 0);
int index = 0;
for (const auto& lootBlock : lootList) {
lua_createtable(L, 0, 7);
setField(L, "itemId", lootBlock.id);
setField(L, "chance", lootBlock.chance);
setField(L, "subType", lootBlock.subType);
setField(L, "maxCount", lootBlock.countmax);
setField(L, "actionId", lootBlock.actionId);
setField(L, "text", lootBlock.text);
pushLoot(L, lootBlock.childLoot);
lua_setfield(L, -2, "childLoot");
lua_rawseti(L, -2, ++index);