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    <p>Loading new background each time? I strongly suspect flickering is caused by loading time in texture. You can use threaded loading to avoid flickering.</p> <p><a href="https://stackoverflow.com/questions/12345556/cocos2d-continuously-scrolling-tile-based-game-strange-flash-only-in-device">Here is once other question with something similar problem.</a></p> <p><a href="https://stackoverflow.com/questions/14932027/continuous-scrolling-of-background-in-cocos2d/14932464#14932464">Continuous-horizontal-scrolling-of-background-in-cocos2d</a>: Refer my answer</p> <p>Continuous vertical scroll:</p> <pre><code> #define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) #define MM_BG_SPEED_DUR ( IS_IPAD ? (6.0f) : (2.0f) ) -(void)onEnter { [super onEnter]; [self initBackground]; [self schedule: @selector(tick:)]; } -(void)initBackground { NSString *tex = @"BG/Background.png";//[self getThemeBG]; mBG1 = [CCSprite spriteWithFile:tex]; mBG1.position = ccp(s.width*0.5f,s.height*0.5f); [self addChild:mBG1 z:LAYER_BACKGROUND]; mBG2 = [CCSprite spriteWithFile:tex]; mBG2.position = ccp(s.width*0.5f,s.height*0.5f+mBG1.contentSize.Height); mBG2.flipY = true; [self addChild:mBG2 z:LAYER_BACKGROUND]; } -(void)scrollBackground:(ccTime)dt { CGSize s = [[CCDirector sharedDirector] winSize]; CGPoint pos1 = mBG1.position; CGPoint pos2 = mBG2.position; pos1.y -= MM_BG_SPEED_DUR; pos2.y -= MM_BG_SPEED_DUR; if(pos1.y &lt;=-(s.height*0.5f) ) { pos1.y = pos2.y + mBG2.contentSize.height; } if(pos2.y &lt;=-(s.height*0.5f) ) { pos2.y = pos1.y + mBG1.contentSize.height; } mBG1.position = pos1; mBG2.position = pos2; } -(void)tick:(ccTime)dt { [self scrollBackground:dt]; } </code></pre>
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    1. POHow to make background repeat in vertical direction using parallax
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    1. POHow to make background repeat in vertical direction using parallax
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    1. COHi,thnx for quick reply... My main concern is i want background to repeat top to to down in vertical direction... I tried your link but background is repeating left to right I change x and y but it did not work
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    2. COok..updated my answer..
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    3. COHi,thanks for such great reply .. one problem through..while coming top to bottom the screen is shown blank every time...You can see the background empty ..
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