private void AnimateSprites(Graphics g, SpriteSet spriteSet, long timediffms)
{
var sprites = spriteSet.GetSprites(this.lookingDirection == LookingDirection.Left);
long index = (timediffms / spriteSet.animateDelayMs) % sprites.Count;
Image image = sprites[(int)index];
g.DrawImageUnscaled(image, location);
}