cocos2d－基本概念(4)-CallFunc Action

CallFunc Action

CallFunc Action 允许你可以在一个action里面调用一个方法。在序列action里面的最后一个调用，会非常有用。 

Example:

id actionTo = [MoveTo actionWithDuration: 2 position:ccp(s.width-40, s.height-40)];
id actionBy = [MoveBy actionWithDuration:2  position: ccp(80,80)];
id actionCallFunc = [CallFunc actionWithTarget:self selector:@selector(doATask)];


id actionSequence = [Sequence actions: actionTo, actionBy, actionCallFunc, nil];

-(void) doATask
{
//some code
}

CallFuncN and CallFuncND Actions

有两种类型的CallFunc，分别是CallFuncN和CallFuncND

 CallFuncN 把node当作参数。

 CallFuncND 需要node和一个指向某个数据的指针。

Example:

id actionCallFuncN = [CallFuncN actionWithTarget:self selector:@selector(doATaskN:)];

// make sure you notice the trailing :

id actionCallFuncND = [CallFuncND actionWithTarget:self selector:@selector(doATaskN:data:) 

data:pointerToSomeData];
	
- (void) doATaskN: (id)node
{
	//some code
}
- (void) doATaskND: (id)node data:(void*)d
{
	//some code
}