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axmol/lua/cocos2dx_support/CCLuaEngine.cpp

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/****************************************************************************
Copyright (c) 2011 cocos2d-x.org
http://www.cocos2d-x.org
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "CCLuaEngine.h"
#include "tolua++.h"
#include "tolua_fix.h"
extern "C" {
#include "lualib.h"
#include "lauxlib.h"
#include "lualoadexts.h"
}
#include "LuaCocos2d.h"
#include "LuaGameInterfaces.h"
#include "CCArray.h"
#include "CCTimer.h"
namespace cocos2d
{
CCSchedulerFuncEntry* CCSchedulerFuncEntry::entryWithFunctionRefID(int functionRefID, ccTime fInterval, bool bPaused)
{
CCSchedulerFuncEntry* entry = new CCSchedulerFuncEntry();
entry->initWithFunctionRefID(functionRefID, fInterval, bPaused);
entry->autorelease();
return entry;
}
bool CCSchedulerFuncEntry::initWithFunctionRefID(int functionRefID, ccTime fInterval, bool bPaused)
{
m_timer = new CCTimer();
m_timer->initWithScriptFunc(functionRefID, fInterval);
m_timer->autorelease();
m_timer->retain();
m_functionRefID = functionRefID;
m_paused = bPaused;
LUALOG("[LUA] ADD function refID: %04d, add schedule entryID: %d", m_functionRefID, m_entryID);
return true;
}
CCSchedulerFuncEntry::CCSchedulerFuncEntry(void)
: m_timer(NULL)
, m_functionRefID(0)
, m_paused(true)
, m_isMarkDeleted(false)
{
static int entryIDCount = 0;
++entryIDCount;
m_entryID = entryIDCount;
}
CCSchedulerFuncEntry::~CCSchedulerFuncEntry(void)
{
m_timer->release();
CCLuaEngine::sharedEngine()->removeLuaFunctionRef(m_functionRefID);
LUALOG("[LUA] DEL function refID: %04d, remove schedule entryID: %d", m_functionRefID, m_entryID);
}
// ----------------------------
CCLuaEngine* CCLuaEngine::s_engine = NULL;
CCLuaEngine::CCLuaEngine()
{
m_state = lua_open();
luaL_openlibs(m_state);
tolua_Cocos2d_open(m_state);
tolua_prepare_ccobject_table(m_state);
tolua_LuaGameInterfaces_open(m_state);
luax_loadexts(m_state);
}
CCLuaEngine::~CCLuaEngine()
{
lua_close(m_state);
s_engine = NULL;
}
CCLuaEngine* CCLuaEngine::sharedEngine()
{
if (!s_engine)
{
s_engine = new CCLuaEngine();
}
return s_engine;
}
void CCLuaEngine::purgeSharedEngine()
{
if (s_engine) delete s_engine;
}
// -------------------------------------------
void CCLuaEngine::removeCCObject(CCObject *object)
{
tolua_remove_ccobject_by_refid(m_state, object->m_refID);
}
void CCLuaEngine::removeLuaFunctionRef(int functionRefID)
{
tolua_remove_function_by_refid(m_state, functionRefID);
}
void CCLuaEngine::addSearchPath(const char* path)
{
lua_getglobal(m_state, "package"); /* stack: package */
lua_getfield(m_state, -1, "path"); /* get package.path, stack: package path */
const char* cur_path = lua_tostring(m_state, -1);
lua_pop(m_state, 1); /* stack: package */
lua_pushfstring(m_state, "%s;%s/?.lua", cur_path, path); /* stack: package newpath */
lua_setfield(m_state, -2, "path"); /* package.path = newpath, stack: package */
lua_pop(m_state, 1); /* stack: - */
}
int CCLuaEngine::executeScriptFile(const char* filename)
{
int nRet = luaL_dofile(m_state, filename);
// lua_gc(m_state, LUA_GCCOLLECT, 0);
if (nRet != 0)
{
CCLOG("[LUA ERROR] %s", lua_tostring(m_state, -1));
lua_pop(m_state, 1);
return nRet;
}
return 0;
}
int CCLuaEngine::executeGlobalFunction(const char* function_name)
{
lua_getglobal(m_state, function_name); /* query function by name, stack: function */
if (!lua_isfunction(m_state, -1))
{
CCLOG("[LUA ERROR] name '%s' does not represent a Lua function", function_name);
lua_pop(m_state, 1);
return 0;
}
int error = lua_pcall(m_state, 0, 1, 0); /* call function, stack: ret */
// lua_gc(m_state, LUA_GCCOLLECT, 0);
if (error)
{
CCLOG("[LUA ERROR] %s", lua_tostring(m_state, - 1));
lua_pop(m_state, 1); // clean error message
return 0;
}
// get return value
if (!lua_isnumber(m_state, -1))
{
lua_pop(m_state, 1);
return 0;
}
int ret = lua_tointeger(m_state, -1);
lua_pop(m_state, 1); /* stack: - */
return ret;
}
int CCLuaEngine::executeFunctionByRefID(int functionRefId, int numArgs)
{
lua_pushstring(m_state, TOLUA_REFID_FUNC_MAPPING);
lua_rawget(m_state, LUA_REGISTRYINDEX); /* stack: refid_func */
lua_pushinteger(m_state, functionRefId); /* stack: refid_func refid */
lua_rawget(m_state, -2); /* stack: refid_func func */
if (!lua_isfunction(m_state, -1))
{
CCLOG("[LUA ERROR] function refid '%d' does not reference a Lua function", functionRefId);
lua_pop(m_state, 1);
return 0;
}
if (numArgs > 0)
{
// [a1] [a2] refid_func func
// -4 -3 -2 -1
// [a1] [a2] refid_func func [a1]
// -5 -4 -3 -2 -1
int lo = -2 - numArgs;
for (int i = 0; i < numArgs; i++)
{
tolua_pushvalue(m_state, lo); /* stack: refid_func func (...) */
}
}
int error = lua_pcall(m_state, numArgs, 1, 0); /* stack: refid_func ret */
if (error)
{
CCLOG("[LUA ERROR] %s", lua_tostring(m_state, - 1));
lua_pop(m_state, 2); // clean error message
return 0;
}
// get return value
int ret = 0;
if (lua_isnumber(m_state, -1))
{
ret = lua_tointeger(m_state, -1);
}
else if (lua_isboolean(m_state, -1))
{
ret = lua_toboolean(m_state, -1);
}
lua_pop(m_state, 2);
return ret;
}
int CCLuaEngine::executeFunctionWithIntegerData(int functionRefId, int data)
{
lua_pushinteger(m_state, data);
int ret = executeFunctionByRefID(functionRefId, 1);
lua_pop(m_state, 1);
return ret;
}
int CCLuaEngine::executeFunctionWithFloatData(int functionRefId, float data)
{
lua_pushnumber(m_state, data);
int ret = executeFunctionByRefID(functionRefId, 1);
lua_pop(m_state, 1);
return ret;
}
int CCLuaEngine::executeFunctionWithBooleanData(int functionRefId, bool data)
{
lua_pushboolean(m_state, data);
int ret = executeFunctionByRefID(functionRefId, 1);
lua_pop(m_state, 1);
return ret;
}
// functions for excute touch event
int CCLuaEngine::executeTouchEvent(int functionRefId, int eventType, CCTouch *pTouch)
{
lua_pushinteger(m_state, eventType);
const CCPoint& pos = pTouch->locationInView(0);
lua_pushnumber(m_state, pos.x);
lua_pushnumber(m_state, pos.y);
int ret = executeFunctionByRefID(functionRefId, 3);
lua_pop(m_state, 3);
return ret;
}
int CCLuaEngine::executeTouchesEvent(int functionRefId, int eventType, CCSet *pTouches)
{
lua_pushinteger(m_state, eventType);
lua_newtable(m_state);
CCSetIterator it = pTouches->begin();
CCTouch* touch;
int n = 1;
while (it != pTouches->end())
{
touch = (CCTouch*)*it;
const CCPoint& pos = touch->locationInView(0);
lua_pushnumber(m_state, pos.x);
lua_rawseti(m_state, -2, n++);
lua_pushnumber(m_state, pos.y);
lua_rawseti(m_state, -2, n++);
++it;
}
int ret = executeFunctionByRefID(functionRefId, 2);
lua_pop(m_state, 2);
return ret;
}
int CCLuaEngine::executeSchedule(int functionRefID, ccTime dt)
{
return executeFunctionWithFloatData(functionRefID, dt);
}
} // namespace cocos2d
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