重庆北站:小地图范例

开始学习Unity3D ，因项目的原因找需要小地图的表现形式。找了很多实例代码，但是感觉这个比较简洁。

GameObject.FindGameObjectsWithTag(NpcTags)中的的参数，是需要在在UNITY3D 编辑中设定（must be declared in the tag manager before using them.）

设置步骤：Edit-ProjectSettings-Tags

view plaincopy to clipboardprint?
01.using UnityEngine;  
02.using System.Collections;  
03.public class minMap : MonoBehaviour {  
04.    public Texture backGround;//小地图背景  
05.    public Texture playerMiniLogo;//玩家标记(可旋转)  
06.    public Texture NpcMiniLogo;//NPC标记 如建筑  
07.    public Texture DirectionArrow;  
08.    public Transform Player;//玩家所在位置  
09.    public float arrowAngle=0;  
10.    //real map size(3d world units)  
11.    public float mapWidth=2000;//场景实际宽  
12.    public float mapHeight=2000;//场景实际高  
13.    //minimap size(texture)  
14.    public float miniMapWidth=256;//小地图宽  
15.    public float miniMapHeight=256;//小地图高  
16.    //  
17.    private float backAlpha=0.9f;//背景透明度  
18.    public string NpcTags="NPC";  
19.    private GameObject[] DrawNpcs;  
20.    // Use this for initialization  
21.    void Start () {  
22.        DrawNpcs = GameObject.FindGameObjectsWithTag(NpcTags);  
23.    }  
24.     
25.    // Update is called once per frame  
26.    void Update () {  
27.     
28.    }  
29.    void OnGUI()  
30.    {  
31.        DrawMiniMap(Screen.width - miniMapWidth, Screen.height - miniMapHeight, 2);  
32.    }  
33.    void DrawMiniMap(float LeftX,float LeftY,int PointSize)  
34.    {  
35.       GUI.depth=-10;  
36.       GUI.color=new Color(1,1,1,backAlpha);  
37.       GUI.DrawTexture(new Rect(LeftX,LeftY,miniMapWidth,miniMapHeight),backGround);  
38.       
39.       
40.        //draw npcs  
41.       if(DrawNpcs != null)  
42.       {  
43.          for (int i = 0; i < DrawNpcs.Length;i++ )  
44.          {  
45.              GameObject npc = DrawNpcs[i];  
46.              GUI.color = new Color(1, 1, 1, 1);  
47.              GUI.DrawTexture(new Rect(LeftX + (npc.transform.position.x / mapWidth) * miniMapWidth - (PointSize / 2), LeftY + (miniMapHeight - (npc.transform.position.z / mapHeight) * miniMapHeight - (PointSize / 2)), PointSize, PointSize), NpcMiniLogo);  
48.          }  
49.       }  
50.      
51.        //draw  direction arrow 绘制玩家图标可旋转箭头  
52.       if (DirectionArrow != null)  
53.       {  
54.          GUI.depth = 20;  
55.          GUI.color = new Color(1, 1, 1, 1);  
56.          GUIUtility.RotateAroundPivot(Player.eulerAngles.y, new Vector2(LeftX + (Player.position.x / mapWidth) * miniMapWidth, LeftY + (miniMapHeight - (Player.position.z / mapHeight) * miniMapHeight)));  
57.          GUI.DrawTexture(new Rect(LeftX + (Player.position.x / mapWidth) * miniMapWidth - (DirectionArrow.width / 2), LeftY + (miniMapHeight - (Player.position.z / mapHeight) * miniMapHeight - (DirectionArrow.height / 2)), DirectionArrow.width, DirectionArrow.height), DirectionArrow);  
58.          GUI.matrix = Matrix4x4.identity;  
59.       }  
60.    }  
61.}

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/tjgjp/archive/2010/11/11/6002557.aspx