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Question by moncef363 · Aug 11, 2014 at 03:43 PM · 2dplayerfacing

Detect if player is facing an Object

i'm making a game where my player will change position if he is facing an object (90°) any help to make that detection ?

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avatar image robertbu · Aug 11, 2014 at 05:44 PM 1
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An alternate to @DajBuzi's solution:

  var v = object.position - transform.position;
  if (Vector3.Angle(v, transform.forward) <= 45.0) {
       Debug.Log("I'm facing the object");
  }

This is 45 degrees either size for a total of 90. If you want a full 180 degrees, you can use Vector3.Dot() and look for a positive result. Also if the pivot points are different heights, you might want to zero out the 'y' value before doing the comparison. Note sure of your goal.

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Answer by DajBuzi · Aug 11, 2014 at 03:48 PM

Hello,

I would recomment you to use Raycast:

 Ray ray = new Ray(transform.position, transform.forward);
 RaycastHit hit;
 if(Physics.Raycast(ray, out hit, 100)){
     //check if it hits desired object
     // and do some logic
 }

Attach this to your player and check the results.

transform.position is your player position transform.forward is your player forward direction

Regards, M.Rogalski

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