Trying to get gameobject to point to mouse in a orbit around the player 2D

Question

Basically I have the object rotating around the player but am not able to get it to actually point to the mouse. Instead it just spins rapidly around the player. I feel like my math setup should be correct but I just need help identifying why it isn't working.

     Vector3 origin = cam.WorldToScreenPoint(transform.position);

     origin = (Input.mousePosition - origin);
   
     float angle = Mathf.Atan2(origin.y, origin.x) * Mathf.Rad2Deg; //arctan(origin.y/origin.x)
   
     float pointer_x = (radius * (float)Mathf.Cos(angle)) + transform.position.x; //x = r * cos(theta)
     float pointer_y = (radius * (float)Mathf.Sin(angle)) + transform.position.y; //y = r * sin(theta)
    
     pointer.transform.position = new Vector2(pointer_x, pointer_y);

Answer 1

Answer by logicandchaos · Oct 08, 2021 at 01:40 PM

Try this: //make your origin vector Vector3 origin = cam.WorldToScreenPoint(transform.position); origin = (Input.mousePosition - origin);

         //normalize it
         origin = origin.normalized;
 
         //make it the right distance away
         float distance = 10;//adjust to value you need
         origin *= distance;

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Trying to get gameobject to point to mouse in a orbit around the player 2D

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