public Character(String name, AnimatedSprite sprite, int x, int y, int speed)
  {
    this.name = name;
    this.sprite = sprite;
    this.position = new Point(x,y);
    this.speed = speed;
    this.worldPosition = new Point(0,0);
    this.velocity = new Point(0,0);
    this.isJumping = false; 
  }