axmol/lua/cocos2dx_support/LuaEngineImpl.cpp

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/****************************************************************************
Copyright (c) 2011 cocos2d-x.org
Copyright (c) 2011 NetDragon.com
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.
****************************************************************************/
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#include "LuaEngineImpl.h"
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extern "C" {
#include "lualib.h"
#include "lauxlib.h"
}
#include "tolua++.h"
#include "CCTouch.h"
#include "CCNode.h"
#include "CCObject.h"
#include "LuaCocos2d.h"
#include "LuaSimpleAudioEngine.h"
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#include "Cocos2dxLuaLoader.h"
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using namespace cocos2d;
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CCLuaScriptModule* CCLuaScriptModule::s_luaScriptModule = NULL;
CCLuaScriptModule* CCLuaScriptModule::sharedLuaScriptModule(void)
{
if (s_luaScriptModule == NULL)
{
s_luaScriptModule = new CCLuaScriptModule();
}
return s_luaScriptModule;
}
void CCLuaScriptModule::purgeSharedLuaScriptModule()
{
s_luaScriptModule->release();
s_luaScriptModule = NULL;
}
/*************************************************************************
Constructor (creates Lua state)
*************************************************************************/
CCLuaScriptModule::CCLuaScriptModule()
{
d_ownsState = true;
d_state = lua_open();
luaL_openlibs(d_state);
int nOpen = tolua_Cocos2d_open(d_state);
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CC_UNUSED_PARAM(nOpen);
nOpen = tolua_SimpleAudioEngine_open(d_state);
CC_UNUSED_PARAM(nOpen);
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
addLuaLoader(loader_Android);
#endif
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}
/*************************************************************************
Constructor (uses given Lua state)
*************************************************************************/
CCLuaScriptModule::CCLuaScriptModule(lua_State* state)
{
// just use the given state
d_ownsState = false;
d_state = state;
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
addLuaLoader(loader_Android);
#endif
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}
/*************************************************************************
Destructor
*************************************************************************/
CCLuaScriptModule::~CCLuaScriptModule()
{
if ( d_ownsState && d_state )
{
lua_close( d_state );
}
s_luaScriptModule = NULL;
}
/*************************************************************************
Add a path to find lua files in (equivalent to LUA_PATH)
*************************************************************************/
bool CCLuaScriptModule::addSearchPath(const std::string& path)
{
lua_getglobal( d_state, "package" );
lua_getfield( d_state, -1, "path" ); // get field "path" from table at top of stack (-1)
const char* cur_path = lua_tostring( d_state, -1 ); // grab path string from top of stack
lua_pop( d_state, 1 ); // get rid of the string on the stack we just pushed on line 5
lua_pushfstring(d_state, "%s;%s/?.lua", cur_path, path.c_str());
lua_setfield( d_state, -2, "path" ); // set the field "path" in table at -2 with value at top of stack
lua_pop( d_state, 1 ); // get rid of package table from top of stack
return 0; // all done!
}
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/*************************************************************************
Add lua loader, now it is used on android
*************************************************************************/
void CCLuaScriptModule::addLuaLoader(lua_CFunction func)
{
if (! func)
{
return;
}
// stack content after the invoking of the function
// get loader table
lua_getglobal(d_state, "package"); // package
lua_getfield(d_state, -1, "loaders"); // package, loaders
// insert loader into index 2
lua_pushcfunction(d_state, func); // package, loaders, func
for (int i = lua_objlen(L, -2) + 1; i > 2; --i)
{
lua_rawgeti(d_state, -2, i - 1); // package, loaders, func, function
// we call lua_rawgeti, so the loader table now is at -3
lua_rawseti(d_state, -3, i); // package, loaders, func
}
lua_rawseti(d_state, -2, 2); // package, loaders
// set loaders into package
lua_setfield(d_state, -2, "loaders"); // package
lua_pop(d_state, 1);
}
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/*************************************************************************
Execute script file
*************************************************************************/
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bool CCLuaScriptModule::executeScriptFile(const std::string& filename)
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{
int nRet = luaL_dofile(d_state,filename.c_str());
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if (nRet != 0)
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{
// print the error msg
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CCLog("%s", lua_tostring(d_state, -1));
// pop the error code
lua_pop(d_state, 1);
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return false;
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}
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return true;
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}
/*************************************************************************
Execute global script function
*************************************************************************/
int CCLuaScriptModule::executeScriptGlobal(const std::string& function_name)
{
// get the function from lua
lua_getglobal(d_state, function_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
CCLog("name does not represent a Lua function");
lua_settop( d_state, 0 );
return 0;
}
// call it
int error = lua_pcall(d_state,0,1,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
CCLog("%s", msg.c_str());
lua_settop( d_state, 0 );
return 0;
}
// get return value
if ( !lua_isnumber(d_state,-1) )
{
CCLog("return value is not a number %s", function_name.c_str());
lua_settop( d_state, 0 );
return 0;
}
int ret = (int)lua_tonumber(d_state,-1);
lua_pop(d_state,1);
// return it
return ret;
}
/*************************************************************************
Execute scripted event handler
*************************************************************************/
bool CCLuaScriptModule::executeSchedule(const std::string& handler_name, ccTime cc)
{
if (handler_name.size() == 0)
{
std::string msg = "(LuaScriptModule) Unable to execute scripted event handler: handler_name == NULL\n";
CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// get the function from lua
lua_getglobal(d_state, handler_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
lua_settop( d_state, 0 );
std::string msg = handler_name + "\n" + "name does not represent a Lua function" + "\n";
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CCLog("%s %d", msg.c_str(), __FILE__);
return false;
}
// push EventArgs as the first parameter
//tolua_pushusertype(d_state,(void*)&cc,"dFloat");
lua_pushfstring(d_state, "%f", cc);
// call it
int error = lua_pcall(d_state,1,0,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
lua_settop( d_state, 0 );
std::string msgerror = handler_name + "\n\n" + msg + "\n";
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CCLog("%s %d", msgerror.c_str(), __FILE__);
return false;
}
// return it
return true;
}
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bool CCLuaScriptModule::executeCallFunc(const std::string& handler_name)
{
if (handler_name.size() == 0)
{
std::string msg = "(LuaScriptModule) Unable to execute scripted event handler:handler_name == NULL\n";
CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
lua_getglobal(d_state, handler_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
lua_settop( d_state, 0 );
std::string msg = handler_name + "name does not represent a Lua function" + "\n";
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CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// push EventArgs as the first parameter
//tolua_pushusertype(d_state,(void*)&cc,"cocos2d::ccTime");
// call it
int error = lua_pcall(d_state,0,0,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
lua_settop( d_state, 0 );
std::string msgerror = handler_name + msg + "\n";
CCLog("%s %s %d", __FILE__, msgerror.c_str(), __LINE__);
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return false;
}
// return it
return true;
}
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bool CCLuaScriptModule::executeCallFuncN(const std::string& handler_name, CCNode* pNode)
{
if (handler_name.size() == 0)
{
std::string msg = "(executeCallFuncN) Unable to execute scripted event handler: handler_name == NULL\n";
CCLog("%s %d ", msg.c_str(), __LINE__);
return false;
}
lua_getglobal(d_state, handler_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
lua_settop( d_state, 0 );
std::string msg = handler_name + "name does not represent a Lua function" + "\n";
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CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// push EventArgs as the first parameter
tolua_pushusertype(d_state,(void*)pNode,"cocos2d::CCNode");
// call it
int error = lua_pcall(d_state,1,0,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
lua_settop( d_state, 0 );
std::string msgerror = handler_name + msg + "\n";
CCLog("%s %s %d", __FILE__, msgerror.c_str(), __LINE__);
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return false;
}
// return it
return true;
}
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bool CCLuaScriptModule::executeCallFuncO(const std::string &handler_name, cocos2d::CCObject *pObject)
{
if (handler_name.size() == 0)
{
std::string msg = "(executeCallFuncO) Unable to execute scripted event handler: handler_name == NULL\n";
CCLog("%s %d ", msg.c_str(), __LINE__);
return false;
}
lua_getglobal(d_state, handler_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
lua_settop( d_state, 0 );
std::string msg = handler_name + "name does not represent a Lua function" + "\n";
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CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// push EventArgs as the first parameter
tolua_pushusertype(d_state,(void*)pObject,"cocos2d::CCObject");
// call it
int error = lua_pcall(d_state,1,0,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
lua_settop( d_state, 0 );
std::string msgerror = handler_name + msg + "\n";
CCLog("%s %s %d", __FILE__, msgerror.c_str(), __LINE__);
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return false;
}
// return it
return true;
}
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bool CCLuaScriptModule::executeCallFuncND(const std::string& handler_name, CCNode* pNode, void*pData)
{
if (handler_name.size() == 0)
{
std::string msg = "(executeCallFuncND) Unable to execute scripted event handler: handler_name == NULL\n";
CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// get the function from lua
lua_getglobal(d_state, handler_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
lua_settop( d_state, 0 );
std::string msg = handler_name + "name does not represent a Lua function" + "\n";
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CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// push EventArgs as the first parameter
tolua_pushusertype(d_state,(void*)pNode,"cocos2d::CCNode");
tolua_pushusertype(d_state,(void*)pData,"void*");
// call it
int error = lua_pcall(d_state,2,0,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
lua_settop( d_state, 0 );
std::string msgerror = handler_name + msg + "\n";
CCLog("%s %d", __FILE__, msgerror.c_str(), __LINE__);
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return false;
}
// return it
return true;
}
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bool CCLuaScriptModule::executeMenuHandler(const std::string& handler_name, CCObject* pobj)
{
if (handler_name.size() == 0)
{
std::string msg = "(LuaScriptModule) Unable to execute scripted event handler: handler_name == NULL\n";
CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// get the function from lua
lua_getglobal(d_state, handler_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
lua_settop( d_state, 0 );
std::string msg = handler_name + "name does not represent a Lua function" + "\n";
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CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// push EventArgs as the first parameter
tolua_pushusertype(d_state,(void*)pobj,"cocos2d::CCObject");
// call it
int error = lua_pcall(d_state,1,0,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
std::string msgerror = handler_name + msg + "\n";
CCLog("%s %s %d", __FILE__, msgerror.c_str(), __LINE__);
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return false;
}
// return it
return true;
}
bool CCLuaScriptModule::executeTouchesEvent(const std::string& handler_name, CCSet *pobj)
{
if (handler_name.size() == 0)
{
std::string msg = "(LuaScriptModule) Unable to execute scripted event handler: handler_name == null\n";
CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// get the function from lua
lua_getglobal(d_state, handler_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
lua_settop( d_state, 0 );
std::string msg = handler_name+" does not represent a Lua function"+"\n";
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CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// push array to lua
lua_createtable(d_state, pobj->count(), 0);
int newTable = lua_gettop(d_state);
int index = 1;
CCSetIterator iter = pobj->begin();
for (; iter != pobj->end(); iter++)
{
tolua_pushusertype(d_state,(void*)(*iter),"cocos2d::CCTouch");
lua_rawseti(d_state, newTable, index++);
}
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// call it
int error = lua_pcall(d_state,1,0,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
lua_settop( d_state, 0 );
std::string msgerror = handler_name + msg + "\n";
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CCLog("%s %d", msgerror.c_str(), __LINE__);
return false;
}
// return it
return true;
}
bool CCLuaScriptModule::executeTouch(const std::string& handler_name, CCTouch *pobj)
{
if (handler_name.size() == 0)
{
std::string msg = "(LuaScriptModule) Unable to execute scripted event handler: handler_name == null\n";
CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// get the function from lua
lua_getglobal(d_state, handler_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
lua_settop( d_state, 0 );
std::string msg = handler_name+"\n"+" does not represent a Lua function"+"\n";
CCLog("%s %d", msg.c_str(), __LINE__);
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return false;
}
// push EventArgs as the first parameter
tolua_pushusertype(d_state,(void*)pobj,"cocos2d::CCTouch");
// call it
int error = lua_pcall(d_state,1,0,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
std::string msgerror = handler_name + "\n" + msg + "\n";
CCLog("%s %s %d", __FILE__, msgerror.c_str(), __LINE__);
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return false;
}
// return it
return true;
}
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bool CCLuaScriptModule::executeEventHandler(const std::string& handler_name, CCEvent* pEvent)
{
if (handler_name.size() == 0)
{
std::string msg = "(LuaScriptModule) Unable to execute scripted event handler: handler_name == NULL\n";
CCLog("%s ", msg.c_str());
return false;
}
// get the function from lua
lua_getglobal(d_state, handler_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
lua_settop( d_state, 0 );
std::string msg = handler_name + "\n" + " does not represent a Lua function" + "\n";
CCLog("%s %d", msg.c_str(), __LINE__);
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return false;
}
// push EventArgs as the first parameter
tolua_pushusertype(d_state,(void*)pEvent,"cocos2d::CCEvent");
// call it
int error = lua_pcall(d_state,1,0,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
lua_settop( d_state, 0 );
std::string msgerror = handler_name + "\n" + msg + "\n";
CCLog("%s %s %d", __FILE__, msgerror.c_str(), __LINE__);
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return false;
}
// return it
return true;
}
bool CCLuaScriptModule::executeListItem(const std::string& handler_name, int index, CCObject* pobj)
{
if (handler_name.size() == 0)
{
std::string msg = "(CCLuaScriptModule) Unable to execute scripted event handler: handler_name == NULL\n";
CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// get the function from lua
lua_getglobal(d_state, handler_name.c_str());
// is it a function
if ( !lua_isfunction(d_state,-1) )
{
lua_settop( d_state, 0 );
std::string msg = handler_name + " does not represent a Lua function" + "\n";
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CCLog("%s %d", msg.c_str(), __LINE__);
return false;
}
// push EventArgs as the first parameter
lua_pushfstring(d_state, "%d", index);
tolua_pushusertype(d_state,(void*)pobj,"cocos2d::CCObject");
// call it
int error = lua_pcall(d_state,2,0,0);
// handle errors
if ( error )
{
std::string msg = lua_tostring(d_state,-1);
lua_pop(d_state,1);
lua_settop( d_state, 0 );
std::string msgerror = handler_name + msg + "\n";
CCLog("%s %s %d", __FILE__, msgerror.c_str(), __LINE__);
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return false;
}
// return it
return true;
}
/*************************************************************************
Execute script code string
*************************************************************************/
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bool CCLuaScriptModule::executeString(const std::string& str)
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{
// load code into lua and call it
int error = luaL_dostring(d_state, str.c_str());
// handle errors
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if (error)
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{
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// print error message and pop it
CCLog("%s", lua_tostring(d_state, -1));
lua_pop(d_state, 1);
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return false;
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}
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return true;
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}
/*************************************************************************
Create Lua bindings
*************************************************************************/
void CCLuaScriptModule::createBindings(void)
{
//tolua_Cocos2d_open(d_state);
}
/*************************************************************************
Destroy Lua bindings
*************************************************************************/
void CCLuaScriptModule::destroyBindings(void)
{
lua_pushnil(d_state);
lua_setglobal(d_state,"cocos2d");
// called? necessary? by sunzhuoshi@gmail.com
lua_pushnil(d_state);
lua_setglobal(d_state, "CocosDenshion");
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}