cocos2d Collision detection between sprites

[mediashock]

I am stuck on detecting collision on two sprites.. anyone has a function or anything that may help me detect collision between two sprites?

[SpaceHunter]

Originally Posted by mediashock

I am stuck on detecting collision on two sprites.. anyone has a function or anything that may help me detect collision between two sprites?

CGRectIntersectsRect is your friend. Past in two CGRects (each one represents a sprite). A Boolean is returned based on intersects/collection. Easy as pie.

[mediashock]

so i have

Sprite *sprite = [Sprite spriteWithFile: @"game.png"];

how would i get CGRect of it...

[SpaceHunter]

Originally Posted by mediashock

so i have

Sprite *sprite = [Sprite spriteWithFile: @"game.png"];

how would i get CGRect of it...

Create a method in your class to return the size of your Sprite...something like this...

- (CGRect) getSize
{
    double sx = sprite.position.x;
    double sy = sprite.position.yl
    return CGRectMake(sx, sy, width, height);
}

[pravin]

I made a special method for determining (atlas) sprite bounding rectangles (wrapped into a "SpriteUtilities" class):

+(CGRect) positionRect: (AtlasSprite*)sprite {
	CGSize contentSize = [sprite contentSize];
	CGPoint contentPosition = [sprite position];
	CGRect result = CGRectOffset(CGRectMake(0, 0, contentSize.width, contentSize.height), contentPosition.x-contentSize.width/2, contentPosition.y-contentSize.height/2);
	return result;
}

Then to check for collision of two atlas sprites:

CGRect rect1 = [SpriteUtilities positionRect:atlasSprite1];
CGRect rect2 = [SpriteUtilities positionRect:atlasSprite2];
if (!CGRectIsNull(CGRectIntersection(rect1, rect2))) {
    //handle collision
}

To get better result related to cocos-2d post your queries on cocos-2d forum

[francis]

aren't there more clearer solution on this? ~.~

[davidlxk]

you should try going through this tutorial How To Make A Simple iPhone Game with Cocos2D Tutorial | Ray Wenderlich

[francis]

can someone pls answer this

Thanks