How to add multiple sprite sheets in cocos2D and make it seem like one sprite?

Question

Please help me anyone of possible. I am building a game where I will be loading multiple CCSpriteBatchNode objects and make them change co-ordinates and rotate the frames so it would seem as if the they are animated and they are moving. I have already achieved moving one CCSpriteBatchNode object from one coordinate to another and it is animated. Now I need it to do another very different animation and load another sprite sheet file and move somewhere else, how can I do this?

This is my code so far:

[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"PotkaEntry.plist"];

CCSpriteBatchNode *spriteSheet = [CCSpriteBatchNode batchNodeWithFile:@"PotkaEntry.pvr.ccz"];

[self addChild:spriteSheet];

NSMutableArray *entryAnimFrames = [NSMutableArray array];

for(int i = 1; i<=12; i++)
{
    [entryAnimFrames addObject:[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:@"Potka_entry%d.png", i]]];
}

CCAnimationCache *entryAnim = [CCAnimation animationWithFrames:entryAnimFrames delay:0.08f];

CGSize winSize = [CCDirector sharedDirector].winSize;

self->_body1 = [CCSprite spriteWithSpriteFrameName:@"Potka_entry1.png"];

_body1.position = CGPointMake(winSize.width/2, 0);

self.walkAction = [CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:entryAnim restoreOriginalFrame:NO]];

[_body1 runAction:_walkAction];

_body1.scale = 0.4;

[spriteSheet addChild:_body1];

id entryAction = [CCMoveTo actionWithDuration:5.0f position:ccp(winSize.width/2,60)];

[_body1 runAction:entryAction];

why not just make another CCSpriteBatchNode? What is the issue you're having? — FBryant87
I am asking how I can load another sprite sheet (as in another .pvr.ccz file) onto the same CCSpriteBatchNode object and another sprite frame (the .plist file) in the same CCSpriteFrameCache object? If I do it your way, should I remove the current CCSpriteBatchNode object before loading another one? Thanks in advance. — Shahnawaz

FBryant87 FBryant87 · Accepted Answer · 2012-01-30T11:12:54

You need to create a new CCSpriteBatchNode for each spritesheet you use (by spritesheet I mean the combined pvr.ccz file and .plist file)

The CCSpriteFrameCache is a single cache shared across all your scenes and classes. When you call this method:

[CCSpriteFrameCache sharedSpriteFrameCache]

You are not making a new CCSpriteFrameCache object everytime, there is just ONE instance. You store all your loaded spritesheets in this single cache. So you could load 2 spritesheets into the cache like so:

[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"sheet1.plist"]; 
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"sheet2.plist"];

You then need to create a CCSpriteBatchNode for EACH spritesheet, you cannot have more than one sheet in a batch node:

CCSpriteBatchNode *spriteSheet1 = [CCSpriteBatchNode batchNodeWithFile:@"sheet1.pvr.ccz"]; 
CCSpriteBatchNode *spriteSheet2 = [CCSpriteBatchNode batchNodeWithFile:@"sheet2.pvr.ccz"];

You can then add both of these batch nodes to a layer if you wish. Sprites added to batch nodes must be from the spritesheet that batch node is using.

How to add multiple sprite sheets in cocos2D and make it seem like one sprite?

1 Answers