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Question by trvr · Jun 21, 2013 at 02:35 AM · raycastaicharactercontrollerdebug

Debug.DrawRay Issue?

Hi All. I have been working on a simple AI system that randomly chooses a waypoint and goes there. So far it has been working fine. However, since it is randomly choosing a waypoint, I am adding a basic obstacle avoidance system based off of [this post][1]. So far it has been working fine, and it the raycast is detecting objects in front of the character, but when I try draw that ray, it draws the characters old path, instead of following the actual ray's path.

Here is my code


 var waypoint : Transform[];
 var speed : float = 50;
 private var currentWaypoint : int = 0;
 var loop : boolean = true;
 var player : Transform;
 var dist : float = 3;
 private var character : CharacterController;
  
 function Start ()
 {
     character = GetComponent(CharacterController);
 }
  
 function Update () 
 {
         var target : Vector3 = waypoint[currentWaypoint].position;
         target.y = transform.position.y; // keep waypoint at character's height
         var moveDirection : Vector3 = target - transform.position;
         if(moveDirection.magnitude < 1)
         {
             transform.position = target; // force character to waypoint position
             currentWaypoint = Random.Range(0, waypoint.Length);
         }
         else
         {
         var fwd = transform.TransformDirection (Vector3.forward);
         if (Physics.Raycast (transform.position, fwd, 10) == false) {
             print ("There is something nothing in front of the object!");
             Debug.DrawRay(this.transform.position, fwd, Color.green, 10);
         }
         else if (Physics.Raycast (transform.position, fwd, 10) == true) {
             print ("There is something in front of the object!");
             Debug.DrawRay(this.transform.position, fwd, Color.red, 10);
         }
             transform.LookAt(target);
             character.Move(moveDirection.normalized * speed * Time.deltaTime);
         }
 }



Any and all help would be greatly appreciated. Thanks in advance! [1]: http://answers.unity3d.com/questions/235017/enemy-ai-avoiding-collision.html

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avatar image nixcs2512 · Jun 21, 2013 at 03:14 AM 0
Share
 var fwd = transform.TransformDirection (Vector3.forward);

$$anonymous$$aybe this is the reason. It always return a vector forward in World Space, not a vector forward of your character(local). You need to change to something like that: var fwd = transform.forward; Its just my thinking :)

avatar image Eric5h5 · Jun 21, 2013 at 04:06 AM 0
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No, the whole point of TransformDirection is to transform world space to local space. transform.forward is identical to transform.TransformDirection (Vector3.forward). (But a lot shorter and simpler to type.)

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