1 using UnityEngine;
2 using System.Collections;
3
4 /*
5 * 根据鼠标点击位置改变物体朝向
6 */
7 public class PlayDir : MonoBehaviour {
8
9 public GameObject effect;
10 private bool isMoving = false; //鼠标左键状态
11 private Vector3 targetPosition;
12
13 // Update is called once per frame
14 void Update () {
15 //判断鼠标左键是否按下
16 if (Input.GetMouseButtonDown(0)) {
17 //获取由主摄像机位置到鼠标点击位置的一条射线
18 Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition);
19 RaycastHit hitInfo;
20 bool isCollider = Physics.Raycast (ray, out hitInfo);
21 //判断射线是否成功发射且是否触发目标物体
22 if (isCollider && hitInfo.collider.tag == Tags.ground) {
23 //参数为目标物体的位置信息
24 ShowClickEffect (hitInfo.point);
25 isMoving = true;
26 LookAtTarget (hitInfo.point);
27 }
28 }
29
30 //判断鼠标左键是否抬起
31 if (Input.GetMouseButtonUp(0)) {
32 isMoving = false;
33 }
34
35 if (isMoving) {
36 //获取由主摄像机位置到鼠标点击位置的一条射线
37 Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition);
38 RaycastHit hitInfo;
39 bool isCollider = Physics.Raycast (ray, out hitInfo);
40 //判断射线是否成功发射且是否触发目标物体
41 if (isCollider && hitInfo.collider.tag == Tags.ground) {
42 LookAtTarget (hitInfo.point);
43 }
44 }
45 }
46
47 void ShowClickEffect(Vector3 hitPoint){
48 hitPoint = new Vector3 (hitPoint.x, hitPoint.y + 0.3f, hitPoint.z);
49 GameObject.Instantiate (effect, hitPoint, Quaternion.identity);
50 }
51
52 void LookAtTarget(Vector3 hitPoint){
53 //获取触发目标物体的位置信息
54 targetPosition = hitPoint;
55 //将目标位置的y轴修改为当前物体的y轴
56 targetPosition = new Vector3 (targetPosition.x, transform.position.y, targetPosition.z);
57
58 //当前物体朝向目标位置
59 this.transform.LookAt (targetPosition);
60 }
61 }
