/**************************************************************************** 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 "cocos2d.h" #include "LuaCocos2d.h" #include "CCArray.h" #include "CCScheduler.h" #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID) #include "Cocos2dxLuaLoader.h" #endif NS_CC_BEGIN CCLuaEngine::~CCLuaEngine() { lua_close(m_state); } bool CCLuaEngine::init(void) { m_state = lua_open(); luaL_openlibs(m_state); tolua_Cocos2d_open(m_state); tolua_prepare_ccobject_table(m_state); #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID) addLuaLoader(loader_Android); #endif return true; } CCLuaEngine* CCLuaEngine::engine() { CCLuaEngine* pEngine = new CCLuaEngine(); pEngine->init(); pEngine->autorelease(); return pEngine; } void CCLuaEngine::removeCCObjectByID(int nLuaID) { tolua_remove_ccobject_by_refid(m_state, nLuaID); } void CCLuaEngine::removeLuaHandler(int nHandler) { tolua_remove_function_by_refid(m_state, nHandler); } 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::executeString(const char *codes) { int nRet = luaL_dostring(m_state, codes); 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::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* functionName) { lua_getglobal(m_state, functionName); /* query function by name, stack: function */ if (!lua_isfunction(m_state, -1)) { CCLOG("[LUA ERROR] name '%s' does not represent a Lua function", functionName); 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 nHandler, int numArgs) { lua_pushstring(m_state, TOLUA_REFID_FUNC_MAPPING); lua_rawget(m_state, LUA_REGISTRYINDEX); /* stack: ... refid_func */ lua_pushinteger(m_state, nHandler); /* 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", nHandler); lua_pop(m_state, 2 + numArgs); 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 = 0; try { error = lua_pcall(m_state, numArgs, 1, 0); /* stack: ... refid_func ret */ } catch (exception& e) { CCLOG("[LUA ERROR] lua_pcall(%d) catch C++ exception: %s", nHandler, e.what()); lua_settop(m_state, 0); return 0; } catch (...) { CCLOG("[LUA ERROR] lua_pcall(%d) catch C++ unknown exception.", nHandler); lua_settop(m_state, 0); return 0; } if (error) { CCLOG("[LUA ERROR] %s", lua_tostring(m_state, - 1)); lua_pop(m_state, 2 + numArgs); // 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 + numArgs); return ret; } int CCLuaEngine::executeFunctionWithIntegerData(int nHandler, int data) { lua_pushinteger(m_state, data); return executeFunctionByRefID(nHandler, 1); } int CCLuaEngine::executeFunctionWithFloatData(int nHandler, float data) { lua_pushnumber(m_state, data); return executeFunctionByRefID(nHandler, 1); } int CCLuaEngine::executeFunctionWithBooleanData(int nHandler, bool data) { lua_pushboolean(m_state, data); return executeFunctionByRefID(nHandler, 1); } // functions for excute touch event int CCLuaEngine::executeTouchEvent(int nHandler, int eventType, CCTouch *pTouch) { CCPoint pt = CCDirector::sharedDirector()->convertToGL(pTouch->locationInView(pTouch->view())); lua_pushinteger(m_state, eventType); lua_pushnumber(m_state, pt.x); lua_pushnumber(m_state, pt.y); return executeFunctionByRefID(nHandler, 3); } int CCLuaEngine::executeTouchesEvent(int nHandler, int eventType, CCSet *pTouches) { lua_pushinteger(m_state, eventType); lua_newtable(m_state); CCDirector* pDirector = CCDirector::sharedDirector(); CCSetIterator it = pTouches->begin(); CCTouch* pTouch; int n = 1; while (it != pTouches->end()) { pTouch = (CCTouch*)*it; CCPoint pt = pDirector->convertToGL(pTouch->locationInView(pTouch->view())); lua_pushnumber(m_state, pt.x); lua_rawseti(m_state, -2, n++); lua_pushnumber(m_state, pt.y); lua_rawseti(m_state, -2, n++); ++it; } return executeFunctionByRefID(nHandler, 2); } int CCLuaEngine::executeSchedule(int nHandler, ccTime dt) { return executeFunctionWithFloatData(nHandler, dt); } void CCLuaEngine::addLuaLoader(lua_CFunction func) { if (!func) return; // stack content after the invoking of the function // get loader table lua_getglobal(m_state, "package"); // package lua_getfield(m_state, -1, "loaders"); // package, loaders // insert loader into index 2 lua_pushcfunction(m_state, func); // package, loaders, func for (int i = lua_objlen(m_state, -2) + 1; i > 2; --i) { lua_rawgeti(m_state, -2, i - 1); // package, loaders, func, function // we call lua_rawgeti, so the loader table now is at -3 lua_rawseti(m_state, -3, i); // package, loaders, func } lua_rawseti(m_state, -2, 2); // package, loaders // set loaders into package lua_setfield(m_state, -2, "loaders"); // package lua_pop(m_state, 1); } NS_CC_END