Bachelor-Thesis_Furkan_Karakocaoglu/testumgebung/CrowdModelling/Assets/Scripts/WanderingAI.cs

using UnityEngine;
using UnityEngine.AI;
using System.Collections;

public class WanderingAI : MonoBehaviour
{

    public float wanderRadius;
    public float wanderTimer;

    Animator anim;

    private Transform target;
    private UnityEngine.AI.NavMeshAgent agent;
    private float timer;
    private Vector3 newPos;

    // Use this for initialization
    void Start()
    {
        agent = this.GetComponent<UnityEngine.AI.NavMeshAgent>();
        anim = this.GetComponent<Animator>();
        anim.SetBool("isWalking", true);
        anim.SetBool("isIdle", false);
        newPos = RandomNavSphere(transform.position, wanderRadius, -1);

        timer = wanderTimer;
    }

    // Update is called once per frame
    void Update()
    {
        timer += Time.deltaTime;
        
        if (timer >= wanderTimer)
        {
            // generating random destination position
            newPos = RandomNavSphere(transform.position, wanderRadius, -1);
            agent.SetDestination(newPos);
            anim.SetBool("isWalking", true);
            anim.SetBool("isIdle", false);
            timer = 0;
        } else
        {
            // if x and z coordinates of newPos are the same as the position, humans reached destination and idle animation can start
            if (newPos.x == transform.position.x && newPos.z == transform.position.z)
            {
                anim.SetBool("isWalking", false);
                anim.SetBool("isIdle", true);
            }
        }

    }

    public static Vector3 RandomNavSphere(Vector3 origin, float dist, int layermask)
    {
        Vector3 randDirection = Random.insideUnitSphere * dist;
        randDirection += origin;

        UnityEngine.AI.NavMeshHit navHit;
        UnityEngine.AI.NavMesh.SamplePosition(randDirection, out navHit, dist, layermask);

        return navHit.position;
    }
}