启动多个精灵的cocos2d动画的最佳方法是什么?

我有一个包含ccsprite对象的数组randomalphabets。我需要在这些对象上启动动画。RandoMalphabets数组(NSmutable)最多可包含4个元素。我正在运行一个循环,然后启动动画。这是正确的方法吗?

-(void) startAnimation:(CCSprite *) sprite
{

    [self generateRandomCoordinates]; 

    id actionMove = [CCMoveTo actionWithDuration:3.0 position:ccp(x,y)];
    id actionRotate = [CCRotateBy actionWithDuration:0.0 angle:rotateBy]; 

    id actionMoveDone = [CCCallFuncN actionWithTarget:self selector:@selector(finishedMoving:)]; 

    [sprite runAction:[CCSequence actions:actionMove,actionRotate, actionMoveDone, nil]];

}

-(void) addAlphabetsOnScreen 
{
    for (int i=0; i<=randomAlphabets.count -1; i++) {

        CCSprite *sprite = [randomAlphabets objectAtIndex:i]; 

        [self generateRandomCoordinates];       

        sprite.position = ccp(x,y); 
        [self addChild:sprite]; 

        [self startAnimation:sprite]; 
    }

}