CCSprite overlapping each other

Hi

I am making a cocos2d game, In that i am adding enemies dynamically at different position, and animating them using action.

Enemies are appearing in screen according to the order I added. But I want to开发者_运维技巧 show sprites according to its Y value.

Please tell me is there any api in cocos2d to do sorting the sprites according to sprite position, or which is the best way to accomplish this.

Thanks,

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