FreeFire FreeFire - 2 months ago 19
iOS Question

Animating Sprite Sheets in Cocos2d

I'm having some issues with animating my sprite sheet. I got this code before and it worked. I had 2 frames and my variable in my loop was only allowed to reach a values of 0 and 1 since the frame names were stickman0-568.png and stickman1-568.png. My frames weren't so good so I made a new sprite sheet with 3 frames in it, stickman0-568.png, stickman1-568.png, and stickman2-568.png. My .list file is called sickman-568.plist and the .png sprite sheet is stickman-568.png. I changed the loop so i could only reach a value of 2(0,1,2). When I run it now, it crashes, despite it working before when I only had 2 frames. Can anyone please give me suggestions as to what might have went wrong? Here's my code so you can see what I did:

-(id) init
{
if( (self=[super init]) )
{
backGroundDesert = [CCSprite spriteWithFile:@"DesertMap.png"];
backGroundDesert.position = ccp(backGroundDesert.textureRect.size.width/2, backGroundDesert.textureRect.size.height/2);
[self addChild:backGroundDesert];
[backGroundDesert runAction:[CCMoveBy actionWithDuration:100 position:ccp(-1400,0)]];

[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"stickman-568.plist"];
CCSprite *mainGuy = [CCSprite spriteWithSpriteFrameName:@"stickman0-568.png"];
mainGuy.position = ccp(40,backGroundDesert.textureRect.size.height/2);
CCSpriteBatchNode *batchNode = [CCSpriteBatchNode batchNodeWithFile:@"stickman-568.png"];
[batchNode addChild:mainGuy];
[self addChild:batchNode];
NSMutableArray *animFrames = [NSMutableArray array];
for(int i = 0; i < 3; i++)
{
CCSpriteFrame *frames = [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:@"stickman%02d-568.png", i]];
[animFrames addObject:frames];
}
CCAnimation *cape = [CCAnimation animationWithSpriteFrames:animFrames delay:0.2f];
[mainGuy runAction:[CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:cape restoreOriginalFrame:NO]]];
}
return self;
}

-(void)dealloc
{
[[CCSpriteFrameCache sharedSpriteFrameCache] removeUnusedSpriteFrames];
[super dealloc];
}

Answer

When You Run the code the for loop create the images as below name

 stickman00-568.png
 stickman01-568.png
 stickman02-568.png

That is not images in your sources so only replace below line in your code of for loop. It work fine.

Change the code as below.

CCSpriteFrame *frames = [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:@"stickman%d-568.png", i]];

See this

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