bool OnEnter()
{
float d_r = GetComponent <SpriteRenderer>().bounds.size.magnitude;
this.hitEnemy = Collide.RayGetCollideByTag(transform.position, d_r, dir, "enemy");
this.hitPlayer = Collide.RayGetCollideByTag(transform.position, d_r, dir, "player");
this.hitBuilding = Collide.RayGetCollideByTag(transform.position, d_r, dir, "building");
//TODO: impove return method
return(this.hitEnemy.Length != 0 || this.hitBuilding.Length != 0 || this.hitPlayer.Length != 0);
}