unity 小地图的制作

  1 using UnityEngine;
  2 using System.Collections;
  3 
  4 public class miniMap : MonoBehaviour 
  5 {
  6     
  7     //大地图地形对象
  8     GameObject plane;
  9     //大地图主角对象
 10     GameObject cube;
 11     
 12     //大地图的宽度
 13     float mapWidth;
 14     //大地图的高度
 15     float mapHeight;
 16     //地图边界的检测数值
 17     float widthCheck;
 18     float heightCheck;
 19     
 20     //小地图主角的位置
 21     float mapcube_x =0;
 22     float mapcube_y = 0;
 23 
 24     float mapcube1_x ;
 25     float mapcube1_y; 
 26     
 27     //GUI按钮是否被按下
 28     bool keyUp;
 29     bool keyDown;
 30     bool keyLeft;
 31     bool keyRight;
 32     
 33     //小地图的背景贴图
 34     public Texture map;
 35     //小地图的主角贴图
 36     public Texture map_cube;
 37     GameObject[] cubes;
 38 
 39     void Awake()
 40     {
 41         cubes = GameObject.FindGameObjectsWithTag ("cube");
 42         Debug.Log (cubes[0].name);
 43 
 44     }
 45     void Start()
 46     {
 47         //得到大地图对象
 48         plane = GameObject.Find("Plane");
 49         //得到大地图主角对象
 50         cube = GameObject.Find("Player");
 51         //得到大地图默认宽度
 52         float size_x = plane.GetComponent<MeshFilter>().mesh.bounds.size.x;
 53         //得到大地图宽度的缩放比例
 54         float scal_x = plane.transform.localScale.x;
 55         //得到大地图默认高度
 56         float size_z = plane.GetComponent<MeshFilter>().mesh.bounds.size.z;
 57         //得到大地图高度缩放地理
 58         float scal_z = plane.transform.localScale.z;
 59         
 60         //原始宽度乘以缩放比例计算出真实宽度
 61         mapWidth = size_x * scal_x;
 62         mapHeight = size_z * scal_z;
 63         
 64         //越界监测的宽度
 65         widthCheck = mapWidth / 2;
 66         heightCheck = mapHeight / 2;
 67         
 68         check();
 69     }
 70     
 71     void OnGUI()
 72     {
 73         keyUp = GUI.RepeatButton(new Rect(500,10,100,30),"向前移动");
 74 
 75         keyDown = GUI.RepeatButton(new Rect(500,40,100,30),"向后移动");
 76         
 77         keyLeft = GUI.RepeatButton(new Rect(500,70,100,30),"向左移动");
 78         
 79         keyRight = GUI.RepeatButton(new Rect(500,100,100,30),"向右移动");
 80         
 81         //绘制小地图背景
 82         GUI.DrawTexture(new Rect(0,0,map.width,map.height),map);
 83         //绘制小地图上的“主角”
 84         GUI.DrawTexture(new Rect(mapcube_x,mapcube_y,map_cube.width,map_cube.height),map_cube);
 85 
 86         foreach(var obj in cubes)
 87         {
 88             float x1 = obj.transform.position.x;
 89             float z1 = obj.transform.position.z;
 90             mapcube1_x = (map.width / mapWidth * x1)+map.width/2;
 91             mapcube1_y = ((map.height/mapHeight * z1)+map.height/2);
 92             GUI.DrawTexture(new Rect(mapcube1_x,mapcube1_y,map_cube.width,map_cube.height),map_cube);
 93         }
 94     }
 95     
 96     void FixedUpdate()
 97     {
 98         if(keyUp)
 99         {
100             //向前移动
101             cube.transform.Translate(Vector3.forward * Time.deltaTime *5); 
102             check();
103         }
104         if(keyDown)
105         {
106             //向后移动
107             cube.transform.Translate(-Vector3.forward * Time.deltaTime *5); 
108             check();
109         }
110         if(keyLeft)
111         {
112             //向左移动
113             cube.transform.Translate(-Vector3.right * Time.deltaTime *5);  
114             check();
115         }
116         if(keyRight)
117         {
118             //向右移动
119             cube.transform.Translate(Vector3.right * Time.deltaTime *5); 
120             check();
121         }    
122     }
123     
124     //越界检测
125     void check()
126     {
127         //得到当前主角在地图中的坐标
128         float x = cube.transform.position.x;
129         float z = cube.transform.position.z;
130         
131         //当控制主角超过地图范围时，重新计算主角坐标
132         if(x >= widthCheck)
133         {
134             x = widthCheck;
135         }
136         if(x <= -widthCheck)
137         {
138             x = -widthCheck;
139         }
140         if(z >= heightCheck)
141         {
142             z = heightCheck;
143         }
144         if(z <= -heightCheck)
145         {
146             z = -heightCheck;
147         }
148         
149         cube.transform.position = new Vector3(x,cube.transform.position.y,z);
150         
151         //根据比例计算小地图“主角”的坐标
152         mapcube_x = (map.width / mapWidth * x)+map.width/2;
153         mapcube_y = ((map.height/mapHeight * z)+map.height/2);
154         //Debug.Log (mapcube_x+","+mapcube_y);
155     }
156 }