void OnTriggerExit2D(Collider2D other)
 {
     if(other.CompareTag ("platform"))
         GetComponent<Rigidbody2D>().gravityScale = 3.0f;
     if(other.CompareTag("JumpPad"))
         jumpTypeState = JumpTypeState.normal;
 }
 void OnTriggerEnter2D(Collider2D other)
 {
     if(other.CompareTag ("platform"))
         GetComponent<Rigidbody2D>().gravityScale = 20.0f;
     if(other.CompareTag("JumpPad"))
         jumpTypeState = JumpTypeState.super;
     if(other.tag == "collectibleIcon")
         Destroy (other.gameObject);
 }