团结：全方位击退

Question

I want to make my player bounce in all directions when it collides with my object, I know that when it hit the left side of my object my player gets knock back to the left and the same with the right side, but how can I include the top and bottom of my object. If I'm not making any sense please look at these pictures (X=0 Y=1) and (X=0 Y=-1). ( http://noobtuts.com/content/unity/2d-pong-game/vector2_directions.png )

 public float xForceToAdd;
 public float yForceToAdd;
 // Use this for initialization
 void Start () {

  }

  // Update is called once per frame
   void Update () {

    }
   void OnTriggerEnter2D(Collider2D other)  {
     if (other.gameObject.tag == "Player")
     {
       //Store the vector 2 of the location where the initial hit happened;
       Vector2 initialHitPoint = new Vector2 (other.gameObject.transform.position.x, other.gameObject.transform.position.y);
       float xForce = 0;
       float yForce = 0;
        //Grab our collided with objects rigibody
      Rigidbody2D rigidForForce = other.gameObject.GetComponent<Rigidbody2D>();
       //Determine left right center of X hit
       if (initialHitPoint.x > (this.transform.position.x + (this.transform.localScale.x /3)))
        {
         xForce = 1;
       }
       else if (initialHitPoint.x < (this.transform.position.x - (this.transform.localScale.x /3)))
       {
         xForce = -1;
       }
      else
       {
          xForce = 0;
       }
       if (initialHitPoint.y > (this.transform.position.y + (this.transform.localScale.y /3)))
       {
          yForce = 1;
       }
      else if (initialHitPoint.y < (this.transform.position.y - (this.transform.localScale.y /3)))
       {
          yForce = -1;
       }
      else
       {
          yForce = 0;
       }
       rigidForForce.velocity = new Vector2(xForce * xForceToAdd, yForce * yForceToAdd);
   }

}

Answer 1

Do this instead

void OnTriggerEnter2D(Collider2D other)  {
    if (other.gameObject.tag == "Player") {
        Vector2 v = other.gameObject.transform.position - this.transform.position;
        //Grab our collided with objects rigibody
        Rigidbody2D rigidForForce = other.gameObject.GetComponent<Rigidbody2D>();
        rigidForForce.velocity = v.normalized;
    }
}

Rather than figuring out if you should go up/down/left/right, use the vector math functions. If you're only interested in pushing in the orthogonal directions, do this for the last line

        boolean onX = Mathf.Abs(v.x) > Mathf.Abs(v.y);
        rigidForForce.velocity = new Vector2(Mathf.Sign(v.x)*onX?1:0,Mathf.Sign(v.y)*onX?0:1);