Raycast is not working properly

Question

Hi. Can anybody please check what is wrong in t$$anonymous$$s script? I have been trying to fix it for 2 hours, and I just gave up.

 using UnityEngine;
 using System.Collections;
 
 public class ai1 : MonoBehaviour {
 
     public float spottingDistance = 1;
 
     bool canSee;
     bool alerted=true;
 
     NavMeshAgent pathfinding;
     GameObject player;
 
     RaycastHit $$anonymous$$tInfo;
 
     void Start(){
         pathfinding=GetComponent<NavMeshAgent>();
         player = GameObject.FindGameObjectWithTag("Player");
 
     }
 
     void Update(){
 
 
         Physics.Raycast(gameObject.transform.position, player.transform.position, out $$anonymous$$tInfo, spottingDistance);
         Debug.DrawRay(gameObject.transform.position, player.transform.position, Color.cyan);
 
         if($$anonymous$$tInfo.transform.tag=="Player"){
             canSee=true;
         }
         else{
             canSee=false;
         }
 
         
 
         if(canSee){
             Debug.Log("Enemy is shooting");
         }
         else if(alerted){
             Debug.Log("Enemy is following");
             pathfinding.SetDestination(player.transform.position);
         }
 
     }
 }

T$$anonymous$$s is what's wrong: alt text

Answer 1

Best Answer

Answer by richyrich · Nov 21, 2014 at 08:56 PM

The problem with your script is that although you are supplying two Vector3 variables, the second variable needs to be the direction, not the position that you are aiming for.

You need to create the direction.

Assuming the player is at the point of origin you would do t$$anonymous$$s:

 Vector3 dir = (gameObject.transform.position - player.transform.position).normalized;

Alternatively, if the gameObject is the origin, then reverse:

 Vector3 dir = (player.transform.position - gameObject.transform.position).normalized;

Then

 Physics.Raycast(gameObject.transform.position, dir, out $$anonymous$$tInfo, spottingDistance);

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Answer 2

Answer by Jamcount · Nov 21, 2014 at 08:52 PM

Have you tried making it in an if statement?

 using UnityEngine;
  using System.Collections;
  
  public class ai1 : MonoBehaviour {
  
      public float spottingDistance = 1;
  
      bool canSee;
      bool alerted=true;
  
      NavMeshAgent pathfinding;
      GameObject player;
  
      RaycastHit $$anonymous$$tInfo;
  
      void Start(){
          pathfinding=GetComponent<NavMeshAgent>();
          player = GameObject.FindGameObjectWithTag("Player");
  
      }
  
      void Update(){
  
  
          Debug.DrawRay(gameObject.transform.position, player.transform.position, Color.cyan);
  
          if(Physics.Raycast(gameObject.transform.position, player.transform.position, out $$anonymous$$tInfo, spottingDistance)){
              if($$anonymous$$tInfo.transform.tag=="Player"){
                  canSee=true;
              }
              else{
                  canSee=false;
              }
          }
  
          
  
          if(canSee){
              Debug.Log("Enemy is shooting");
          }
          else if(alerted){
              Debug.Log("Enemy is following");
              pathfinding.SetDestination(player.transform.position);
          }
  
      }
  }

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edve98 · Nov 21, 2014 at 08:55 PM 0

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Still same results :/

Jamcount · Nov 21, 2014 at 08:57 PM 1

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I am not sure, but maybe it is because you just defined the position in Physics.Raycast instead of a direction.

 Physics.Raycast(gameObject.transform.position, player.transform.forward, out hitInfo, spottingDistance);

Raycast is not working properly

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