当敌人看到玩家时让他攻击

Question

Can someone help me I am using the code below to try to let the enemy look if he can see the player or not.

But the problem is can he still see me when I am behind a wall Can someone help me out ?

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;
using UnityEngine.SceneManagement;

public class Test : MonoBehaviour
{
    [SerializeField]
    float distance;

    public GameObject player;
    public Transform Shootpoint;

    public bool CanSee = false;

    [SerializeField]
    float chaseDistence = 0.5f;



    void Update()
    {
        distance = Vector3.Distance(Shootpoint.position, player.transform.position);

        if (!Physics.Raycast(Shootpoint.position, player.transform.position, chaseDistence))
        {
            Debug.DrawLine(Shootpoint.position, player.transform.position, Color.red);
            CanSee = false;
            Debug.Log("CANT SEE");

        }
        else if (Physics.Raycast(Shootpoint.position, player.transform.position, chaseDistence))
        {
            Debug.DrawLine(Shootpoint.position, player.transform.position, Color.green);
            CanSee = true;
            Debug.Log("CAN SEE");
        }
    }
}

Answer 1

Like @BugFinder mentioned, you are only checking that the RayCast did collide with something and not necessarily the player.

If you want to determine if the ray is colliding with only the player, and not another object, use the function overload that sets a RaycastHit object. Then you can get the tag and compare it with the tag of your player. (see Physics.RayCast and RaycastHit )

You could achieve this like so:

RaycastHit hitInfo;
if(Physics.Raycast(Shootpoint.position, player.transform.position, out hitInfo, chaseDistence)) 
{
    if (hitInfo.collider.CompareTag("player"))
    {
        // Can see
    }
    else 
    {
        // Can't see, raycast hit something
    }
}
else
{
    // Can't see, raycast hit nothing
}