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Question by Spaniel · Oct 10, 2012 at 03:15 AM · cameramovement

Linecast not working when main character controller is not moving

When the player is moving, the linecast works perfectly. When the player is standing still, the linecast will always fail. I did a debug of this and had the SimpleMove script I use to control the player and every frame update, printed out the X and Z positions of the GameObject. It only printed while I was in movement. The code is sound but for some reason the position of the player isn't accessible or innacurate when the player is not moving. Very bizarre.

Has anyone come across this?

The simple move script:

 var maxHealth : int = 100;
 var hitDamage : int = 10;
 var speed : float = 6.0;
 var jumpSpeed : float = 8.0;
 var gravity : float = 20.0;

 private var dead : boolean = false;
 var curHealth : int;
 
 private var moveDirection : Vector3 = Vector3.zero;
 
 function Start()
 {
     curHealth = maxHealth;
 }
 
 function Update() 
 {
     if(dead)
         return;
     
     var controller : CharacterController = GetComponent(CharacterController);
     if (controller.isGrounded) {
         // We are grounded, so recalculate
         // move direction directly from axes
         moveDirection = Vector3(Input.GetAxis("Horizontal"), 0,
                                 Input.GetAxis("Vertical"));
         moveDirection = transform.TransformDirection(moveDirection);
         moveDirection *= speed;
         
         if (Input.GetButton ("Jump")) {
             moveDirection.y = jumpSpeed;
         }
     }
 
     // Apply gravity
     moveDirection.y -= gravity * Time.deltaTime;
     
     // Move the controller
      controller.Move(moveDirection * Time.deltaTime);
  
      print("Player x: " + transform.position.x + " Player z: " + transform.position.z);
 }
 
 function DamagePlayer()
 {
     if(dead)
         return;
         
     curHealth -= hitDamage;

     if(curHealth == 0)
         dead = true;
 }

Dealing with the same problem, the linecast fails even if I am right next to the object i am linecasting to when I am still. If I am moving, it is accurate (fails on non line of sights and succeeds when it does have LOS).

 function CanSeePlayer()
 {
     if(Physics.Linecast(transform.position, player.transform.position) == false)
     {
         canSeePlayer = true;
     }
     else
     {
         canSeePlayer = false;
     }
     
     if(canSeePlayer)
     {
         print("He can see you!" + Time.deltaTime);
     }
     else
     {
         print("HE CANNOT SEE YOU!" + Time.deltaTime); 
     }
 }

To recap, linecasting is not working when the player is not moving. When the player is moving, it works fine. It seems as if the player location does not update or is inaccessible when the player is not moving.

Any ideas?

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avatar image Tordur · Oct 10, 2012 at 11:50 AM 0
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From where do you call CanSeePlayer() ?

avatar image Spaniel · Oct 10, 2012 at 11:54 AM 0
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@Tordur In the update function on my NPC pathing script. It's attached to an object so it should update every frame.

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