Enemy AI opening door

Unity Engine
1

Hello everyone,
i’m making a horror game and i need to make an AI for the enemy.

I have the enemy patrolling through the level and chasing/attacking the player when he is in range.

using UnityEngine;
using System.Collections;

public class Chase2 : MonoBehaviour {

    public Transform player;
    public Transform head;
    Animator anim;
    private SphereCollider col;
    private NavMeshAgent agent;
    public Transform[] waypoints;
    int currentWP = 0;
    float rotspeed = 2f;
    float speed = 1.9f;
    RaycastHit hit;
    Vector3 fwd;
 


    void Start ()
    {
       
        agent = GetComponent<NavMeshAgent> ();
        agent.autoBraking = false;
        GotoNextPoint();


        anim = GetComponent<Animator> ();
    }

    void GotoNextPoint()
    {
        if (waypoints.Length == 0)
            return;
       
        agent.speed = 2f;
            agent.destination = waypoints [currentWP].position;
            currentWP = Random.Range (0, waypoints.Length);

    }
       
   

    void Update ()
    {
        Vector3 direction = player.position - this.transform.position;
        direction.y = 0;
        float angle = Vector3.Angle (direction, head.forward);

        if (waypoints.Length > 0) {
            anim.SetBool ("IsIdle", false);
            anim.SetBool ("IsWalking", true);
            if (agent.remainingDistance < 0.5f)
                GotoNextPoint ();

            if (Vector3.Distance (player.position, this.transform.position) < 19 && angle < 60) {
                agent.speed = 3.8f;
                agent.destination = player.position;   
                this.transform.rotation = Quaternion.Slerp (this.transform.rotation,
                    Quaternion.LookRotation (direction), 3f);
           
                if (direction.magnitude > 3) {
                    anim.SetBool ("IsRunning", true);
                    anim.SetBool ("IsAttacking", false);
                    anim.SetBool ("IsWalking", false);
                    agent.Resume ();

                } else {
           
                    anim.SetBool ("IsRunning", false);
                    anim.SetBool ("IsAttacking", true);
                    anim.SetBool ("IsWalking", false);
                    agent.Stop (true);

                }
            } else {
                anim.SetBool ("IsAttacking", false);
                anim.SetBool ("IsRunning", false);
                

            }
        }
    }

//This part should tell the enemy to open the door but it doesn't work,the tags are inverted,DoorOpened is a closed door

            void OnTriggerStay (Collider other)
       
    {
       
            if (hit.collider.tag == "DoorOpened")
        {
            if (Physics.Raycast (transform.position, fwd,out hit, col.radius))
            {
                Animation Door = hit.collider.GetComponent<Animation> ();
                Door.Play ("DoorOpened");
                hit.collider.tag = "DoorClosed";
                AudioSource CDoorClip = hit.collider.GetComponent<AudioSource> ();
                CDoorClip.volume = 0.3f;
                CDoorClip.Play ();
            }
        }
    }
                   
                   
        }

Since the level is a hotel,i need the enemy to be able to open doors,
i tried something like in the script but he just walk through doors without opening them.

Also how can i change the script so the enemy doesnt detect the player if he is behind a wall?

thanks
Costa

2

make a trigger by the door and if an enemy walk into the trigger with

    public void OnTriggerEnter(Collider other)
    {
        if(other == "enemyname")
        {
        open door animation or script
        }
    }

maybe?

3

you’ll need to use raycasts https://unity3d.com/learn/tutorials/topics/physics/raycasting