Unity教學 EP.9｜製作簡單敵人AI：巡邏與追蹤

想讓敵人「自己動起來」？這集做一個簡單的巡邏+追蹤AI！

一、巡邏AI

在場景中放置兩個空物件當作巡邏點，敵人來回移動：

public Transform pointA, pointB;
public float speed = 2f;
private Transform target;

void Start()
{
    target = pointA;
}

void Update()
{
    transform.position = Vector2.MoveTowards(transform.position, target.position, speed * Time.deltaTime);

    if (Vector2.Distance(transform.position, target.position) < 0.1f)
        target = target == pointA ? pointB : pointA;
}

二、追蹤玩家

加上簡單的「追蹤距離判斷」：

public Transform player;
public float detectRange = 3f;

void Update()
{
    if (Vector2.Distance(transform.position, player.position) < detectRange)
    {
        transform.position = Vector2.MoveTowards(transform.position, player.position, speed * Time.deltaTime);
    }
    else
    {
        // 回到巡邏邏輯
    }
}