在Lua中继承Cocos2dx的C++类

刺骨的言语ヽ痛彻心扉 2022-06-03 02:45 195阅读 0赞

文章转载自：[http://blog.csdn.net/c201038795050/article/details/46974665][http_blog.csdn.net_c201038795050_article_details_46974665]

--第一种方式：  
    --继承  
    Circle = class("Circle", function()  
            return cc.Node:create()  
        end  
    )  
      
    --初始化  
    function Circle:ctor()  
        cclog("Circle init callBack")  
    end  
      
    --创建  
    function Circle:create()  
        local sprite = Circle:new()  
      
        sprite.circleSpeed = 0  
      
        local function updateHandlerFunc(dt)  
            sprite:update()  
        end  
        --sprite.updateHandler = Director.getScheduler():scheduleScriptFunc(updateHandlerFunc,0.0,false)  
      
        return sprite  
    end  
      
    function Circle:update()  
        local rotation = self:getRotation()+tonumber(self.circleSpeed/60)  
        self:setRotation(rotation)  
    end

--第二种方式：  
    Circle = class("Circle")  
    Circle.__index = Circle  
      
    --继承  
    function Circle:extend(target)  
        local t = tolua.getpeer(target)  
        if not t then  
            t = {}  
            tolua.setpeer(target, t)  
        end  
        setmetatable(t, self)  
        return target  
    end  
      
    --创建  
    function Circle:create()  
        local sprite = Circle:extend(cc.Node:create())  
      
        sprite.circleSpeed = 0  
      
        local function updateHandlerFunc(dt)  
            sprite:update()  
        end  
        --sprite.updateHandler = Director.getScheduler():scheduleScriptFunc(updateHandlerFunc,0.0,false)  
      
        return sprite  
    end  
      
    function Circle:update()  
        local rotation = self:getRotation()+tonumber(self.circleSpeed/60)  
        self:setRotation(rotation)  
    end

建议使用第一种方式继承Cocos2dx的C++类，现在在3.x中，官方已经帮我们把继承的底层写好了，所以按照第一种的方式来继承，既简单，又方便。

[http_blog.csdn.net_c201038795050_article_details_46974665]: http://blog.csdn.net/c201038795050/article/details/46974665