Cocos2dx 中的CCCallFunc,CCCallFuncN,CCCallFuncND,CCCallFuncO比较
首先看一张图片,表示了CCCallFunc的继承关系:
1、CCCallFunc,回调,调用不带参数的函数:
[cpp]
CCSequence::actions(CCCallFunc::actionWithTarget(this, callfunc_selector(ExtendActionLayer::onCallBack1)));
void ExtendActionLayer::onCallBack1()
{
flight->runAction(CCTintBy::actionWithDuration(0.5f, 255, 0, 255));
}
2、CCCallFuncO,回调,O表示CCObject,CCCallFunco可以带CCObject参数的函数
[cpp]
CCSequence::actions(CCCallFuncO::actionWithTarget(this, callfuncO_selector(ExtendActionLayer::onCallBack2), CCInteger::create(2));
void ExtendActionLayer::onCallBack2(CCObject* data)
{
CCInteger* num = dynamic_cast<CCInteger*>(data);
pSender->runAction(CCTintBy::actionWithDuration(num->getValue(), 255, 0, 255));
}
3、CCCallFuncN,回调,N表示CCNode,表示可以传递Node*类型
[cpp]
CCSequence::actions(CCCallFuncN::actionWithTarget(this, callfuncN_selector(ExtendActionLayer::onCallBack3)));
void ExtendActionLayer::onCallBack3(CCNode* pSender)
{
// 在这个例子里,pSender就是flight,因为是他执行了那个actionF
pSender->runAction(CCTintBy::actionWithDuration(1.0f, 255, 0, 255));
}
4、CCCallFuncND,回调,ND表示CCNode和Data,可以传递对象本身和一个void*类型参数,void*表示可以是任意类型的参数
[cpp]
CCSequence::actions(CCCallFuncND::actionWithTarget(this, callfuncND_selector(ExtendActionLayer::onCallBack4), (void *)2));
void ExtendActionLayer::onCallBack4(CCNode* pSender, void* pData)
{
pSender->runAction(CCTintBy::actionWithDuration(static_cast<float>((int)pData), 255, 0, 255));
}
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