How can i make the ray cast don't go through the walls

Question

So basically i want to know what shell i add to t$$anonymous$$s code so the raycast wont go through the GameObjects here's the code.

 var Range : float;
 
 function Update () {
 
 var forward = transform.TransformDirection(Vector3.forward);
 var $$anonymous$$t : RaycastHit;
 
 Debug.DrawRay(transform.position , forward * Range , Color.blue);
 
 if (Input.GetMouseButtonDown(0)){
 if (Physics.Raycast(transform.position , forward , $$anonymous$$t , Range)){
 Debug.Log("$$anonymous$$t");
 
 
 if ($$anonymous$$t.collider.gameObject.name == "Cube1"){
 
 Destroy(gameObject.Find("Cube1"));
 Debug.Log("heyeyyey");
 }
 }
 }
 }

Answer 1

Answer by robertbu · Jul 13, 2013 at 03:41 AM

Raycast() stops a the first collider it finds. You need multiple layers and layer masks to get Raycasts to ignore an object. Given that you are not using a mask in your Raycast(), the problem is elsewhere. I see two possibilities.

One line 17, you use gameObject.Find("Cube1"). T$$anonymous$$s will find a game object with that name, but, unless there is exactly one object with that name in the scene, it will not necessarily find the game object $$anonymous$$t by the collider. You can change your code to:

 Destroy($$anonymous$$t.collider.gameObject);

The other possibility concerns how your walls are constructed. If you made them out of planes and used a shader with culling turned off, then you will have a problem. Planes are one-sided, so they will only report a $$anonymous$$t from one side. If t$$anonymous$$s is the problem you can change the collider on your walls to a Box colliders.

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lorddome · Jul 13, 2013 at 04:22 AM 0

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i made a test walls made of cubes i didn't use planes , i used cube1 just for a test of my code it's my first time using raycast i don't know alot about it.

robertbu · Jul 13, 2013 at 04:26 AM 0

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So you only have one cube with the name 'Cube1'? And somehow your raycast is finding object behind walls? Put this in Update() to verify where your raycast is pointing:

 Debug.DrawRay(transform.position, transform.forward * Range);

Note you can use 'transform.forward' instead of your TransformDirection() calculation.

How can i make the ray cast don't go through the walls

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