objective c - CCLayer keeps shifting position -

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i using cocos2d , have following code moves layer based on player touching screen. reason, each time code called position of layer shifts 32 in 1 direction or other. cant fathom why happening. there no other code anywhere in program manipulates position of these ccnodes (or other node).

-(void) animatestructure:(int)index and:(ccsprite*)asprite at:(cgpoint)apoint {     cgpoint point1 = self.position;     cgpoint point2 = playersprite.position;      id move = [ccmoveby actionwithduration:0.1 position:ccp(32*tempx,32*tempy)];     [self runaction:move];         id move2 = [ccmoveby actionwithduration:0.1 position:ccp(-32*tempx,-32*tempy)];     [playersprite runaction:move2];      self.position = point1;     playersprite.position = point2; }

not how move actions play-out if set position while action in progress, case here.


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