Unity中的AI感知系统

  AI感知系统模拟视觉、听觉甚至是嗅觉系统。

1. 巡逻的士兵可以看到视野前方的敌方角色。
2. 巡逻的士兵可以听到四面八方的距离比较近的声音

视觉

1. 基于圆（球体）的：
   

   
   

2. 基于三角形（椎体）的：
   

   
   

听觉

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Soldier : MonoBehaviour {

    public float viewDistance = 5;
    public float viewAngle = 120;

    private Transform playerTransform;

    void Start () {
        playerTransform = GameObject.Find("Player").transform;
    }

    void Update () {
        if( Vector3.Distance(playerTransform.position,transform.position)<=viewDistance)
        {
            Vector3 playerDir = playerTransform.position - transform.position;
            float angle = Vector3.Angle(playerDir, transform.forward);
            if (angle <= viewAngle / 2)
            {
                Debug.Log(" I see you！");
            }
        }
    }
}

if( Vector3.Distance(playerTransform.position,transform.position)<=viewDistance)
        {
            Vector3 playerDir = playerTransform.position - transform.position;
            float angle = Vector3.Angle(playerDir, transform.forward);
            if (angle <= viewAngle / 2)
            {
                Debug.Log(" I see you！");
            }
        }