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[Sesa]

Originally Posted by smasher

You're using beginAnimations/commitAnimations to animation an image from the top of the screen to the bottom, right? And then you're checking for collisions once, right after you start the animation.

In my experience CGRectIntersectsRect and beginAnimations/commitAnimations do not mix well. flakeImage.frame will return the endpoint of the animation, not the real current position of the flake. I would pick a reasonable framerate like 15 or 20 FPS and update the positions yourself, without using beginAnimations/commitAnimations.

I also don't see an array of flakes. CheckCollision needs to loop through the array of flakes and check each one against the elephant.

Ohh, Okay, This is my new code, but it dosent work either :( 

@synthesize myRock, meteorArray; 

-(void)viewDidLoad {
	
	
	[self createMeteors];
	
	[NSTimer scheduledTimerWithTimeInterval:(0.1) target:self selector:@selector(moveMeteors) userInfo:nil repeats:YES];
	
	[super viewDidLoad];
}


-(void)createMeteors{
	
    if (meteorArray==nil){
		meteorArray = [[NSMutableArray alloc] init];
    }
	
    UIImage *meteorImage = [UIImage imageNamed:@"STone.png"];
    UIImageView *newView;
	
    for (int i = 0; i< 3; i++){  //creates meteors
        newView= [[UIImageView alloc] initWithImage: meteorImage];
		
        //pick a position *above* the top of the screen
		int x = arc4random()%320; 
        int y = -arc4random()%480;
		double scale = 1 / round(random() % 100) + 1.0;
		double speed = 1 / round(random() % 100) + 1.0;
        newView.center = CGPointMake (x,y);
		
		
		
        [self.view addSubview: newView]; //adds meteors as subviews
        [meteorArray addObject: newView]; //add to array
        [newView release];
    }
	
}

-(void)moveMeteors{
	
	for (UIImageView* myRock in meteorArray ){
		
		//move new center down
		CGPoint newCenter = myRock.center;
		newCenter.y = newCenter.y +10;
		
		if (newCenter.y > 480){ // if off the bottom
			newCenter.y=0;   //pop to top
			newCenter.x = arc4random()%320;  //and pick new x position
		}
		
		myRock.center = newCenter;
	}
}