Question

I have 3 question.

1. How to keep fps rate constant(almost) in cocos2d.When lots of CCSprite created and removed within a small interval like (5-8) per second is it possible to keep frame rate lmost constant??

2. Is [self removeChild:sprite cleanup:YES] is enough or I should also use

     CCTexture2D *texture = [sprite texture]; [[CCTextureCache sharedTextureCache] removeTexture: texture];
   

3. The following Part of code is responsible for my frame drop.How to accomplish same task in better way?

   id fadeout = [CCFadeOut actionWithDuration:1.4f];
   
   id call = [CCCallFunc actionWithTarget:self   
   selector:@selector(RemoveSmashedSprite:)];
   
   CCSequence* sequence= [CCSequence
   actions:fadeout, call, nil];
   
   [smash runAction:sequence];
   

   … and…

   > -(void)RemoveSmashedSprite:(id)sender
   {
   
   
       CCSprite *sp = (CCSprite *)sender;
   
   
   
       [self removeChild:sp cleanup:YES];  
   
   }
   

This is called 5-8 times per second. So the frame rate goes down. Can any one help me?

Answer 1

You shouldn’t remove textures if you’re going to reuse them in the short term. It would only benefit memory while having a great drawback in performance.

To maintain a constant frame rate you could try reusing the sprites instead of creating and removing them. Instead of calling removeChild you could set visible = NO and add it to an array of unused sprites. Then when you need a new of these sprites you check if there is any in that unused array and only create a new one if it’s empty. This way you would minimize the amount of sprites created and destroyed.