How can I see if my character has walls to the left or right of it?

Hi!

I would like to see with raycasting, if my characters have walls left, right or forward of them, I use this code for this:

Code (csharp):

1.  
2. if (Physics.Raycast(transform.position, fwd, out objectHit, 1.2f)) {
3.             if (objectHit.collider.tag == "Wall") {
4.                 fwdFree = false;
5.                 Debug.Log("FWDDDDDDDD");
6.             }
7.             else {
8.                 fwdFree = true;
9.             }
10.         }
11.         else {
12.                 fwdFree = true;
13.         }
14.    
15.  
16.         if (Physics.Raycast(transform.position, rght, out objectHit, 1.2f)) {
17.             if (objectHit.collider.tag == "Wall") {
18.                 Debug.Log("RIGHTTTTTTTT");
19.                 rghtFree = false;
20.             }
21.             else {
22.                 rghtFree = true;
23.             }
24.         }
25.         else {
26.             rghtFree = true;
27.         }
28.  
29.         if (Physics.Raycast(transform.position, lft, out objectHit, 1.2f)) {
30.             if (objectHit.collider.tag == "Wall") {
31.                 Debug.Log("LEFTTTTTTT");
32.                 lftFree = false;
33.             }
34.             else {
35.                 lftFree = true;
36.             }
37.         }
38.         else {
39.             lftFree = true;
40.         }
41.  
42.  

However, while my FWD direction works great, my the RGHT and LFT directions get Debugged always, and not just when there is a wall near the character.
I would like to ask you, what is the reason because of it, and how could I solve it?

Thanks in advance!

 

Would you mind posting the rest of your Raycast code so that we can see how you're defining FWD, RGHT and LFT?

 

Yes, sorry, I have added it first, but deleted it for some reason
I could have make it work with the following code, but for some reason the left debug give me LEFTTTTTT, even if there isn't wall near the character.

Code (csharp):

1.  
2.  
3. void Update () {
4.         elapsedTime += Time.deltaTime;
5.    
6.         if (elapsedTime >= movingTime) {
7.             bool moved = false;
8.             if (!moved) {
9.  
10.                 fwd = transform.forward;
11.                 rght = transform.right;
12.                 lft = Vector3.left;
13.            
14.  

Then I use this code to determine the fwdFree, lftFree, rghtFree variables' value: (I call it in update but just if elapsedTime >= movingTime)

Code (csharp):

1.  
2. if (Physics.Raycast(transform.position, fwd, out objectHit, rayDistance)) {
3.                     if (objectHit.collider.tag == "Wall") {
4.                         fwdFree = false;
5.                         Debug.Log("FWDDDDDDDD");
6.                     }
7.                     else {
8.                         fwdFree = true;
9.                     }
10.                 }
11.                 else {
12.                         fwdFree = true;
13.                 }
14.            
15.  
16.                 if (Physics.Raycast(transform.position, rght, out objectHit, rayDistance)) {
17.                     if (objectHit.collider.tag == "Wall") {
18.                         Debug.Log("RIGHTTTTTTTT");
19.                         rghtFree = false;
20.                     }
21.                     else {
22.                         rghtFree = true;
23.                     }
24.                 }
25.                 else {
26.                     rghtFree = true;
27.                 }
28.  
29.                 if (Physics.Raycast(transform.position, lft, out objectHit, rayDistance)) {
30.                     if (objectHit.collider.tag == "Wall") {
31.                         Debug.Log("LEFTTTTTTT");
32.                         lftFree = false;
33.                     }
34.                     else {
35.                         lftFree = true;
36.                     }
37.                 }
38.                 else {
39.                     lftFree = true;
40.                 }
41.  

 

You might also want to use

Code (csharp):

1. Debug.DrawLine

or

Code (csharp):

1. Debug.DrawRay

in your Update function to see in the editor where your ray are landings.

It helps a ton when working with raycast.

 

is there a reason why your lft is defined as Vector3.left, and not by the same method as right and forward? Shouldn't it be transform.left? It may be transform.left doesn't exist, but then you can just inverse your right (-transform.right). Don't remember...