cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   hm50
   Member

   Hey All, Im trying to create an action/actions on each letter of a CCBitmapFontAtlas. I would like for each letter(child) to scale to 2 then back, then step to the next letter, what I have currently (below) steps through the letters, but obviously all letters(children) are doing the action at the same time. How would I implement this so that the second child doesn't start it's action until the first child is finished, and so on?

   (the CCRepeatForever is just temporary)

   for (int x=0; x<[[gameOverLabel children] count]; x++){
   	CCSprite *tempChar = (CCSprite*) [gameOverLabel getChildByTag:x];
   	id scale = [CCScaleBy actionWithDuration:0.5 scale:2];
   	id scale_back = [scale reverse];
   	id seq = [CCSequence actions: scale, scale_back, nil];
   	[tempChar runAction: [CCRepeatForever actionWithAction:seq]];
   }

   Posted 1 year ago #
2. 

   Mark Sawicki
   Member

   hm50,

   quickest way I can think of to just have it work like you want would be to add a CCDelayTime action to the sequence..

   i.e.

   float scaleDuration = 0.5f;
   for (int x=0; x<[[gameOverLabel children] count]; x++){
   	CCSprite *tempChar = (CCSprite*) [gameOverLabel getChildByTag:x];
   	id delay = [CCDelayTime actionWithDuration(x*scaleDuration)];
   	id scale = [CCScaleBy actionWithDuration:scaleDuration scale:2];
   	id scale_back = [scale reverse];
   	id seq = [CCSequence actions: delay, scale, scale_back, nil];
   	[tempChar runAction: [CCRepeatForever actionWithAction:seq]];
   }

   edit: err. that looks like it would give you a wave effect, starting halfway through the last scale.. but you could just make the delay x*2*scaleDuration, and that should wait completely until the last animation is done.

   -Mark

   Posted 1 year ago #
3. 

   xozyain
   Member

   try something like this:

   id scale = [CCScaleBy actionWithDuration:0.5 scale:2];
   id scale_back = [scale reverse];
   id seq = [CCSequence actions: scale, scale_back, nil];

   for (int x=0; x<[[gameOverLabel children] count]; x++){

   [((CCSprite*)[gameOverLabel getChildByTag:x]) runAction: [CCRepeatForever actionWithAction:[[seq copy] autorelease]]];
   }

   Posted 1 year ago #
4. 

   hm50
   Member

   @Mark Yes, that's exactly what I was looking for, I forgot all about using CCDelayTime.

   Thank you so much!

   Posted 1 year ago #

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