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Cocos2d Scrolling Background

/ Published in: Objective C
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  1. //Create our scrolling background
  2. - (void)setupBackgroundImage
  3. {
  4.     //create both sprite to handle background
  5.     background1 = [CCSprite spriteWithFile:@"cloud_bg1.png"];
  6.     background2 = [CCSprite spriteWithFile:@"cloud_bg2.png"];
  7.  
  8.     background1.position = ccp(0, size.height/2);
  9.     background2.position = ccp(size.width, size.height/2);
  10.  
  11.     //add them to main layer
  12.     [self addChild:background1 z:0];
  13.     [self addChild:background2 z:0];
  14.  
  15.     //add schedule to move backgrounds
  16.     [self schedule:@selector(scroll:)];
  17. }
  18.  
  19. - (void)scroll:(ccTime)dt {
  20.  
  21.     background1.position = ccp( background1.position.x - 2, background1.position.y );
  22.     background2.position = ccp( background2.position.x - 2, background2.position.y );
  23.  
  24.     //reset position when they are off from view.
  25.     if (background1.position.x == - (size.width/2)) {
  26.         background1.position = ccp(size.width+(size.width/2), size.height/2);
  27.     }
  28.     else if (background2.position.x == - (size.width/2)) {
  29.         background2.position = ccp(size.width+(size.width/2), size.height/2);
  30.     }
  31.  
  32. }
  33.  

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