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Question by emek12 · Aug 06, 2013 at 03:57 AM · fpsaienemy aizombie

Enemy AI Range Detection

So far I gave my enemy a charcater controller, and it follows me everywhere I go, but I want to make it so that if Im within a certain distance it`ll follow me. Heres my code

  var target : Transform;  //the player
     var speed : float = 10;  // the speed
     var controller:CharacterController;
     function Start(){
         controller = gameObject.GetComponent(CharacterController);
     }
     function Update(){
         transform.LookAt(target);  // the NPC looks at the player
         // Here you access the Character Controller component and move your NPC with SimpleMove() giving the speed and the direction(forward).
         //As the NPC is looking at you, forward is in your direction.
         controller.SimpleMove(speed*transform.forward);
         
       }
     }
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Answer by cdrandin · Aug 06, 2013 at 04:31 AM

  var target : Transform;  //the player
     var speed : float = 10;  // the speed
     var controller:CharacterController;
     var aiDetectinRange : float 6;
 
     function Start(){
         controller = gameObject.GetComponent(CharacterController);
     }
     function Update(){
         transform.LookAt(target);  // the NPC looks at the player
         // Here you access the Character Controller component and move your NPC with SimpleMove() giving the speed and the direction(forward).
         //As the NPC is looking at you, forward is in your direction.
 
         // distance between the current object and the player, if within the distance then move
         if( Vect3.Distance(target.transorm.position,transform.position) < aiDetectionRange) )
             controller.SimpleMove(speed*transform.forward);
  
       }
     }
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Answer by emek12 · Aug 06, 2013 at 05:25 AM

This didnt work, the enemy stays in one spot, even when Im right in front of its face

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avatar image cdrandin · Aug 06, 2013 at 06:30 AM 0
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print out the display and see what values you are getting. You want the distance between both player and object. So, check out the docs for how to use it

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Answer by Jtbentley_v2 · Aug 06, 2013 at 08:29 AM

aiDetectinRange is spelled wrong. You check against aiDetectionRange, which if you aren't using #pragma strict in the header of the script will dynamically be declared..

I also thought it was Vector3.Distance(a,b)? If Vect3.Distance works, cool.

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avatar image cdrandin · Aug 06, 2013 at 08:39 AM 0
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haha you are right. yeah sorry. Should have double check what I write.

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