2 - Unity3d自動(dòng)尋路以及在Game視圖中顯示線段

這2個(gè)使用。先添加Areas層，然后在Object->Navgation Area->設(shè)置Areas層
<2>這個(gè)可以運(yùn)用到dota游戲中，小兵自動(dòng)3路尋路

LineRenderer組件

這個(gè)的話主要是用來(lái)在Game視圖中畫(huà)線段

首先要設(shè)置一下
LineRenderer->Materials
材質(zhì)要設(shè)置一下，不然會(huì)顯示材質(zhì)丟失，就是那個(gè)紫色的一團(tuán)

LineRenderer->Parameters->StartWidth
LineRenderer->Parameters->EndWidth
這兩個(gè)是設(shè)置開(kāi)始寬度和結(jié)束寬度。如果先要讓線段粗一點(diǎn)可以設(shè)置值大一些

然后上代碼
using UnityEngine;
using System.Collections;
?
public class Nav : MonoBehaviour
{
????private NavMeshAgent agent;
????public Transform target;
????private LineRenderer lineRenderer;
????// Use this for initialization
????void Start()
????{
????????agent = GetComponent();
????????lineRenderer = gameObject.GetComponent();
????}
?
????// Update is called once per frame
????void Update()
????{
????????agent.SetDestination(target.position);
????????Vector3[] path = agent.path.corners;
????????for (int i = 0; i < path.Length; i++)
????????{
????????????path[i] = path[i] + new Vector3(0, 1, 0);
????????}
????????lineRenderer.SetVertexCount(_path.Length);
????????for (int i = 0; i < path.Length; i++)
????????{
????????????lineRenderer.SetPosition(i, path[i]);
????????}
????}
}