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Question by Chimera3D · Jul 13, 2012 at 08:54 PM · raycastaddforcedirectionmousepositionhit

Raycast Hit Question

I can't seem to get this to work, what I'm trying to do is get the gameObject to add force in the direction of the hit point of the raycast which is being casted from the mosue position, however nothing I have tried so far works. Here's my code:

         if (Input.GetButton ("Fire1")) {
 
         var ray : Ray = Camera.main.ScreenPointToRay (Input.mousePosition);
         var hit : RaycastHit;
       
         if (Physics.Raycast (ray, hit, Mathf.Infinity)) {
          
          var newVector3 = hit.point;
            
             var moveDir = transform.position - newVector3;
 
             rigidbody.AddForce (moveDir * speed);
         }
     }
     
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Answer by whydoidoit · Jul 13, 2012 at 08:58 PM

Well the direction of the hit is the direction of the ray - which you can get from ray.direction. Or are you thinking you want to take the direction from something else? in which case your moveDir logic is backwards right now and you probably want to do a .normalized on it.

    var moveDir = (hit.point - transform.position).normalized;
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avatar image Chimera3D · Jul 13, 2012 at 09:12 PM 0
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That helped, but the object won't follow the mouse on the x axis.

avatar image whydoidoit · Jul 13, 2012 at 09:25 PM 0
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You want it to follow the mouse? Because adding a force will push it away...

avatar image Chimera3D · Jul 13, 2012 at 09:28 PM 0
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Yes, what forces should I add because I don't want to use transforms?

avatar image whydoidoit · Jul 13, 2012 at 09:32 PM 0
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That would be incredibly hard to work out - if you want something to follow the mouse you pretty much have to use transform modification.

avatar image Chimera3D · Jul 13, 2012 at 09:43 PM 0
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Ok then, I already knew how to do it with transforms. Well how can I get the object to rotate towards the hit point one one axis?

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