Transparent PNG Animation

This is the code I am using to draw animations of explosions onto some UIImageViews.

I struggled a lot with "Animated PNG with Transparent Region" in this code, but in the end discovered that iPhone animation do not support PNG-8 and you must use PNG-24.

 NSMutableArray *frames = [NSMutableArray arrayWithCapacity:25];

    

    for (int i = 0; i < 26; i++) {

        UIImage *frame = [UIImage imageNamed:[NSString stringWithFormat:@"exp%d.png", i]];

        

        [frames addObject:frame];

    }

    

    self.playerShipImageAnim = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"exp0.png"]];

    self.hostileShipImageAnim = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"exp0.png"]];

    

    [playerShipImage addSubview:playerShipImageAnim];

    [hostileShipImage addSubview:hostileShipImageAnim];

    

    playerShipImageAnim.animationImages = frames;

    hostileShipImageAnim.animationImages = frames;

    playerShipImageAnim.animationRepeatCount = 1;

    hostileShipImageAnim.animationRepeatCount = 1;

    playerShipImageAnim.animationDuration = 0.5;

    hostileShipImageAnim.animationDuration = 0.5;

Much Needed Stack Overflows

How to communicate data and objects between View Controllers
http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers

And with modal controllers
http://petermcintyre.com/topics/data-from-modal-vc-via-protocol/

Apple Documentation on Protocols
http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/ObjectiveC/Chapters/ocProtocols.html#//apple_ref/doc/uid/TP30001163-CH15-SW1

Accessing the Current Layer from another Sprite in Cocos2d
http://stackoverflow.com/questions/7668541/how-to-access-the-current-layer-in-cocos2d

Setting the display text on a UIButton
http://stackoverflow.com/questions/3209159/ipad-set-text-to-a-button-programatically

Setting Image Location Programmatically
http://stackoverflow.com/questions/5311639/setting-an-uiimageviews-frame-position-relative-to-parent-view-in-interface-bui

Converting Between NSArray and NSMutableArray
http://stackoverflow.com/questions/1768937/how-do-i-convert-nsmutablearray-to-nsarray

Fixing Some Allocated Released Messages
http://stackoverflow.com/questions/5855881/calayer-release-message-sent-to-deallocated-instance-in-uiviewcontroller