SpriteKit BoundingBox detection texture change - objective-c

Question

Edit: Hi at all! (forgot to say hello...)
I got a pretty annoying problem.
I've created a small program which works quite good so far. However, I'm trying to change an SKSpriteNode texture whenever it's hovering over another SKSpriteNode.
To test the implementation I added an NSLog() to print the hovered nodes origin.
THAT works. But the texture change only works when hovering over the last itereated node.
Complicated. Here is some code:
-(void)checkAimingHover{
for (SKSpriteNode *childSprite in [parentNode children]) {
CGRect boundingBox =
CGRectMake(childSprite.position.x-childSprite.size.width/2,
childSprite.position.y-childSprite.size.height/2,
childSprite.frame.size.width,
childSprite.frame.size.height);
if (CGRectContainsPoint(boundingBox, aiming.position)) {
// THIS works like a charm
NSLog(#"%f/%f",boundingBox.origin.x, boundingBox.origin.y);
// THIS only works on the last created boundingBox
[aiming setTexture:[SKTexture textureWithImageNamed:#"aim_hover"]];
} else [aiming setTexture:aimDefault];
}
}
aming: SKSpriteNode *aiming;
And the small update():
-(void)update:(NSTimeInterval)currentTime {
if (lastUpdateTime) {
deltaTime = currentTime - lastUpdateTime;
} else {
deltaTime = 0;
}
lastUpdateTime = currentTime;
[self checkAimingHover];
}

Answer 1

You are resetting your texture on each loop. Try this instead:
BOOL hitTestDidHit = NO;
for (SKSpriteNode *childSprite in [parentNode children]) {
CGRect boundingBox =
CGRectMake(childSprite.position.x-childSprite.size.width/2,
childSprite.position.y-childSprite.size.height/2,
childSprite.frame.size.width,
childSprite.frame.size.height);
if (CGRectContainsPoint(boundingBox, aiming.position)) {
// THIS works like a charm
NSLog(#"%f/%f",boundingBox.origin.x, boundingBox.origin.y);
// THIS only works on the last created boundingBox
hitTestDidHit = YES;
}
}
if(hitTestDidHit) {
[aiming setTexture:[SKTexture textureWithImageNamed:#"aim_hover"]];
} else {
[aiming setTexture:aimDefault];
}
Also I should tell you about the super cool .calculateAccumulatedFrame property which pretty much does what your bounding box does but with children as well.