在Lua中使用自定义类——tolua++工具使用（下集）

在Lua中使用自定义类——tolua++工具使用（下集）





笨木头花心贡献，啥？花心？不呢，是用心~

转载请注明，原文地址： /article/1389447.html



正文：

上回说到，把LuaCocos2d.cpp文件拷到我们的lua工程里，然后，编译。



大功告成……啊才怪啊~！





你会发现一大堆的编译错误，超过100个了，木了个头的。怎么回事，我只能认定是这个工具出问题了。

怎么办？没关系~我们在LuaCocos2d.cpp里搜索一下我们的SpriteFactory类吧，肯定有的，看看其中一段：

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/* method: sharedSpriteFactory of class SpriteFactory */

#ifndef TOLUA_DISABLE_tolua_Cocos2d_SpriteFactory_sharedSpriteFactory00

static int tolua_Cocos2d_SpriteFactory_sharedSpriteFactory00(lua_State* tolua_S)

{

#ifndef TOLUA_RELEASE

tolua_Error tolua_err;

if (

!tolua_isusertable(tolua_S,1,"SpriteFactory",0,&tolua_err) ||

!tolua_isnoobj(tolua_S,2,&tolua_err)

)

goto tolua_lerror;

else

#endif

{

{

SpriteFactory* tolua_ret = (SpriteFactory*) SpriteFactory::sharedSpriteFactory();

tolua_pushusertype(tolua_S,(void*)tolua_ret,"SpriteFactory");

}

}

return 1;

#ifndef TOLUA_RELEASE

tolua_lerror:

tolua_error(tolua_S,"#ferror in function 'sharedSpriteFactory'.",&tolua_err);

return 0;

#endif

}

#endif //#ifndef TOLUA_DISABLE

知道我想说什么吧？既然它已经能生成自定类的这些代码了，那还怕什么。

现在回到生成LuaCocos2d.cpp的步骤，打开Cocos2d.pkg文件，把其它所有无关的类删除~！变成这样:

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<span style="font-size:14px;">$#include "LuaCocos2d.h"



$pfile " SpriteFactory.pkg"

</span>



然后继续输入命令，生成LuaCocos2d.cpp文件。



于是，这样生成的文件就只有我们自定义类的声明代码了：

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<span style="font-size:14px;">#include "LuaCocos2d.h"



/* function to register type */

static void tolua_reg_types (lua_State* tolua_S)

{

#ifndef Mtolua_typeid

#define Mtolua_typeid(L,TI,T)

#endif

tolua_usertype(tolua_S,"CCSprite");

Mtolua_typeid(tolua_S,typeid(CCSprite), "CCSprite");

tolua_usertype(tolua_S,"CCLayer");

Mtolua_typeid(tolua_S,typeid(CCLayer), "CCLayer");

tolua_usertype(tolua_S,"SpriteFactory");

Mtolua_typeid(tolua_S,typeid(SpriteFactory), "SpriteFactory");

}



/* method: sharedSpriteFactory of class SpriteFactory */

#ifndef TOLUA_DISABLE_tolua_Cocos2d_SpriteFactory_sharedSpriteFactory00

static int tolua_Cocos2d_SpriteFactory_sharedSpriteFactory00(lua_State* tolua_S)

{

#ifndef TOLUA_RELEASE

tolua_Error tolua_err;

if (

!tolua_isusertable(tolua_S,1,"SpriteFactory",0,&tolua_err) ||

!tolua_isnoobj(tolua_S,2,&tolua_err)

)

goto tolua_lerror;

else

#endif

{

{

SpriteFactory* tolua_ret = (SpriteFactory*) SpriteFactory::sharedSpriteFactory();

tolua_pushusertype(tolua_S,(void*)tolua_ret,"SpriteFactory");

}

}

return 1;

#ifndef TOLUA_RELEASE

tolua_lerror:

tolua_error(tolua_S,"#ferror in function 'sharedSpriteFactory'.",&tolua_err);

return 0;

#endif

}

#endif //#ifndef TOLUA_DISABLE



/* method: createSprite of class SpriteFactory */

#ifndef TOLUA_DISABLE_tolua_Cocos2d_SpriteFactory_createSprite00

static int tolua_Cocos2d_SpriteFactory_createSprite00(lua_State* tolua_S)

{

#ifndef TOLUA_RELEASE

tolua_Error tolua_err;

if (

!tolua_isusertype(tolua_S,1,"SpriteFactory",0,&tolua_err) ||

!tolua_isusertype(tolua_S,2,"CCLayer",0,&tolua_err) ||

!tolua_isnumber(tolua_S,3,0,&tolua_err) ||

!tolua_isnoobj(tolua_S,4,&tolua_err)

)

goto tolua_lerror;

else

#endif

{

SpriteFactory* self = (SpriteFactory*) tolua_tousertype(tolua_S,1,0);

CCLayer* mLayer = ((CCLayer*) tolua_tousertype(tolua_S,2,0));

SpriteFactory::SpriteType enSpriteType = ((SpriteFactory::SpriteType) (int) tolua_tonumber(tolua_S,3,0));

#ifndef TOLUA_RELEASE

if (!self) tolua_error(tolua_S,"invalid 'self' in function 'createSprite'", NULL);

#endif

{

CCSprite* tolua_ret = (CCSprite*) self->createSprite(mLayer,enSpriteType);

tolua_pushusertype(tolua_S,(void*)tolua_ret,"CCSprite");

}

}

return 1;

#ifndef TOLUA_RELEASE

tolua_lerror:

tolua_error(tolua_S,"#ferror in function 'createSprite'.",&tolua_err);

return 0;

#endif

}

#endif //#ifndef TOLUA_DISABLE



/* Open function */

TOLUA_API int tolua_Cocos2d_open (lua_State* tolua_S)

{

tolua_open(tolua_S);

tolua_reg_types(tolua_S);

tolua_module(tolua_S,NULL,0);

tolua_beginmodule(tolua_S,NULL);

tolua_cclass(tolua_S,"SpriteFactory","SpriteFactory","",NULL);

tolua_beginmodule(tolua_S,"SpriteFactory");

tolua_constant(tolua_S,"en_close",SpriteFactory::en_close);

tolua_constant(tolua_S,"en_grossini",SpriteFactory::en_grossini);

tolua_constant(tolua_S,"en_grossinis_sister",SpriteFactory::en_grossinis_sister);

tolua_constant(tolua_S,"en_grossinis_sister2",SpriteFactory::en_grossinis_sister2);

tolua_function(tolua_S,"sharedSpriteFactory",tolua_Cocos2d_SpriteFactory_sharedSpriteFactory00);

tolua_function(tolua_S,"createSprite",tolua_Cocos2d_SpriteFactory_createSprite00);

tolua_endmodule(tolua_S);

tolua_endmodule(tolua_S);

return 1;

}





#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 501

TOLUA_API int luaopen_Cocos2d (lua_State* tolua_S) {

return tolua_Cocos2d_open(tolua_S);

};

#endif

</span>



这就没有问题了，我们不要替换它原有LuaCocos2d.cpp文件，而是依葫芦画瓢地把我们生成的LuaCocos2d.cpp文件里新增的内容拷到原有的文件里。这样编译就基本不会报错了，即使报错，也只是小范围报错，顶多几个，不会出现上百个错误吓死人了。



然后编译，运行，没有问题了。

我写了一个lua文件测试我的功能：

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local function createLayer()

local layer = CCLayer:create();



local sprite = SpriteFactory:sharedSpriteFactory():createSprite(layer, SpriteFactory.en_grossini);

sprite:setPosition(200, 200);

return layer;

end



local scene = CCScene:create();

scene:addChild(createLayer());

CCDirector:sharedDirector():replaceScene(scene);



运行效果：




完美~！噗，自己赞自己。