Cocos2d Tiled Sprite: Creates a tiled sprite from the source sprite's texture, tiling it or clipping it to the desired width and height.

TiledSprite.h

//
// Cocos2d Tiled Sprite
//
// Ebyan Alvarez-Buylla
// http://www.nolithius.com
//
// Creates a tiled sprite from the source sprite's texture, tiling it or clipping it to the desired width and height.
// Usage: [[TiledSprite alloc] initWithSprite:spriteWithTextureOrSubtexture width:640 height:480];
//
// Further details and screenshot at:
// http://www.nolithius.com/game-development/cocos2d-iphone-repeating-sprite
//
// License: Public Domain. Enjoy!
//

#import "cocos2d.h"

@interface TiledSprite : CCSprite
{
    int width;
    int height;
}

- (id) initWithSprite:(CCSprite*)p_sprite width:(int)p_width height:(int)p_height;

@end

TiledSprite.m

//
// Cocos2d Tiled Sprite
//
// Ebyan Alvarez-Buylla
// http://www.nolithius.com
//
// Creates a tiled sprite from the source sprite's texture, tiling it or clipping it to the desired width and height.
// Usage: [[TiledSprite alloc] initWithSprite:spriteWithTextureOrSubtexture width:640 height:480];
//
// Further details and screenshot at:
// http://www.nolithius.com/game-development/cocos2d-iphone-repeating-sprite
//
// License: Public Domain. Enjoy!
//

#import "TiledSprite.h"

@implementation TiledSprite

- (id) initWithSprite:(CCSprite *)p_sprite width:(int)p_width height:(int)p_height
{
    if (self = [super init])
    {
        // Only bother doing anything if the sizes are positive
        if (p_width > 0 && p_height > 0)
        {
            CGRect spriteBounds = p_sprite.textureRect;
            int sourceX = spriteBounds.origin.x;
            int sourceY = spriteBounds.origin.y;
            int sourceWidth = spriteBounds.size.width;
            int sourceHeight = spriteBounds.size.height;
            CCTexture2D* texture = p_sprite.texture;
            
            // Case 1: both width and height are smaller than source sprite, just clip
            if (p_width <= sourceWidth && p_height <= sourceHeight)
            {
                CCSprite* sprite = [CCSprite spriteWithTexture:texture rect:CGRectMake(sourceX, sourceY + sourceHeight - p_height, p_width, p_height)];
                sprite.anchorPoint = ccp(0, 0);
                [self addChild:sprite];
            }
            // Case 2: only width is larger than source sprite
            else if (p_width > sourceWidth && p_height <= sourceHeight)
            {
                // Stamp sideways until we can
                int ix = 0;
                while (ix < p_width - sourceWidth)
                {
                    CCSprite* sprite = [CCSprite spriteWithTexture:texture rect:CGRectMake(sourceX, sourceY + sourceHeight - p_height, sourceWidth, p_height)];
                    sprite.anchorPoint = ccp(0, 0);
                    sprite.position = ccp(ix, 0);
                    [self addChild:sprite];
                    
                    ix += sourceWidth;
                }
                
                // Stamp the last one
                CCSprite* sprite = [CCSprite spriteWithTexture:texture rect:CGRectMake(sourceX, sourceY + sourceHeight - p_height, p_width - ix, p_height)];
                sprite.anchorPoint = ccp(0, 0);
                sprite.position = ccp(ix, 0);
                [self addChild:sprite];
            }
            // Case 3: only height is larger than source sprite
            else if (p_height >= sourceHeight && p_width <= sourceWidth)
            {
                // Stamp down until we can
                int iy = 0;
                while (iy < p_height - sourceHeight)
                {
                    CCSprite* sprite = [CCSprite spriteWithTexture:texture rect:CGRectMake(sourceX, sourceY, p_width, sourceHeight)];
                    sprite.anchorPoint = ccp(0, 0);
                    sprite.position = ccp(0, iy);
                    [self addChild:sprite];
                    
                    iy += sourceHeight;
                }
            
                // Stamp the last one
                int remainingHeight = p_height - iy;
                CCSprite* sprite = [CCSprite spriteWithTexture:texture rect:CGRectMake(sourceX, sourceY + sourceHeight - remainingHeight, p_width, remainingHeight)];
                sprite.anchorPoint = ccp(0, 0);
                sprite.position = ccp(0, iy);
                [self addChild:sprite];
            }
            // Case 4: both width and height are larger than source sprite (Composite together several Case 2's, as needed)
            else
            {            
                // Stamp down until we can
                int iy = 0;
                while (iy < p_height - sourceHeight)
                {
                    TiledSprite* sprite = [[TiledSprite alloc] initWithSprite:p_sprite width:p_width height:sourceHeight];
                    sprite.anchorPoint = ccp(0, 0);
                    sprite.position = ccp(0, iy);
                    [self addChild:sprite];
                    
                    iy += sourceHeight;
                }
                
                // Stamp the last one
                TiledSprite* sprite = [[TiledSprite alloc] initWithSprite:p_sprite width:p_width height:p_height - iy];
                sprite.anchorPoint = ccp(0, 0);
                sprite.position = ccp(0, iy);
                [self addChild:sprite];
            }
        }
    }
    
    return self;
}

@end