小地图范例

遥远的桥zz 2011-06-25

展开全文

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

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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.}