SetHitBox or Pixelmask deletes my Entity

(Skelyton) #1

When I set a hitbox to my Bird entity, it is removed after 1 update. Whether it’s a hitbox or a pixelmask, the same thing happens. I put some trace code into the constructor and update function, and based on its position I know that it’s updating once before being deleted.

I’m certain it’s not colliding with anything because I don’t have any collision functions. I’ve commented out the only one I’ve made.

I’m not sure how to debug this.

public class Bird extends Entity { [Embed(source = ‘…/assets/graphics/birdRed.png’)] private const BIRD_GRAPHIC:Class; [Embed(source = ‘…/assets/graphics/birdMask.png’)] private const BIRD_MASK:Class; protected var birdAnim:Spritemap;

	public function Bird() 
	{
		birdAnim = new Spritemap(BIRD_GRAPHIC, 39, 36);
		birdAnim.add("fly right", [0, 1, 2, 3], 8);
		birdAnim.add("fly left", [4, 5, 6, 7], 8);
		this.graphic = birdAnim;
		birdAnim.play("fly right");
		this.x = 10;
		this.y = 50;
		this.layer = 6;
		this.type = "bird";
		//mask = new Pixelmask(BIRD_MASK);
		trace("bird");
	}
	
	public function Die():void
	{
		SpawnController.birdCount -= 1;
		FP.world.remove(this);
	}
	
	override public function update():void
	{
		trace("bird updated");
		this.x += 100 * FP.elapsed;
		
		if (this.x > 800 + width || 0 - width)
		{
			Die();
		}
	}
}

Here is the game without the pixelmask

And here is it with.

I really have no idea how to begin solving this. It’s not being deleted because of a collision, because there aren’t any collision checks.

(Bora Kasap) #2

what is this? if (this.x > 800 + width || 0 - width)

maybe you need this: if (this.x > 800 + width || this.x < 0 - width)

(Skelyton) #3

Wow. Thanks for catching that. Never would have noticed that. Thanks.

(Jacob Albano) #4

The reason this happens is that Flash implicitly converts 0 - width into a Boolean, and any number besides 0 evaluates to true. So you’re essentially doing this:

if (this.x > 800 || true)
{
    //  this code will never not be run
}