public class smallMap : MonoBehaviour {
//大地图地形对象
GameObject plane;
//大地图主角对象
GameObject cube;
//大地图的宽度
float mapWidth;
//大地图的高度
float mapHeight;
//地图边界的检测数值
float widthCheck;
float heightCheck;
//小地图主角的位置
float mapcube_x = 0;
float mapcube_y = 0;
//GUI按钮是否被按下
bool keyUp;
bool keyDown;
bool keyLeft;
bool keyRight;
//小地图的背景贴图
public Texture map;
//小地图的主角贴图
public Texture map_cube;
void Start()
{
//得到大地图对象
plane = GameObject.Find("Plane");
//得到大地图主角对象
cube = GameObject.Find("Cube");
//得到大地图默认宽度
float size_x = plane.GetComponent<MeshFilter>().mesh.bounds.size.x;
//得到大地图宽度的缩放比例
float scal_x = plane.transform.localScale.x;
//得到大地图默认高度
float size_z = plane.GetComponent<MeshFilter>().mesh.bounds.size.z;
//得到大地图高度缩放地理
float scal_z = plane.transform.localScale.z;
//原始宽度乘以缩放比例计算出真实宽度
mapWidth = size_x * scal_x;
mapHeight = size_z * scal_z;
//越界监测的宽度
widthCheck = mapWidth / 2;
heightCheck = mapHeight / 2;
check();
}
void OnGUI()
{
keyUp = GUILayout.RepeatButton("向前移动");
keyDown = GUILayout.RepeatButton("向后移动");
keyLeft = GUILayout.RepeatButton("向左移动");
keyRight = GUILayout.RepeatButton("向右移动");
//绘制小地图背景
GUI.DrawTexture(new Rect(Screen.width - map.width, 0, map.width, map.height), map);
//绘制小地图上的“主角”
GUI.DrawTexture(new Rect(mapcube_x, mapcube_y, map_cube.width, map_cube.height), map_cube);
}
void FixedUpdate()
{
if (keyUp)
{
//向前移动
cube.transform.Translate(Vector3.forward * Time.deltaTime * 5);
check();
}
if (keyDown)
{
//向后移动
cube.transform.Translate(-Vector3.forward * Time.deltaTime * 5);
check();
}
if (keyLeft)
{
//向左移动
cube.transform.Translate(-Vector3.right * Time.deltaTime * 5);
check();
}
if (keyRight)
{
//向右移动
cube.transform.Translate(Vector3.right * Time.deltaTime * 5);
check();
}
}
//越界检测
void check()
{
//得到当前主角在地图中的坐标
float x = cube.transform.position.x;
float z = cube.transform.position.z;
//当控制主角超过地图范围时,重新计算主角坐标
if (x >= widthCheck)
{
x = widthCheck;
}
if (x <= -widthCheck)
{
x = -widthCheck;
}
if (z >= heightCheck)
{
z = heightCheck;
}
if (z <= -heightCheck)
{
z = -heightCheck;
}
cube.transform.position = new Vector3(x, cube.transform.position.y, z);
//根据比例计算小地图“主角”的坐标
//GUI 坐标是左上角为起点和屏幕坐标以左下角为起点
mapcube_x = (map.width / mapWidth * x) + ((map.width / 2) - (map_cube.width / 2)) + (Screen.width - map.width);
mapcube_y = map.height - ((map.height / mapHeight * z) + (map.height / 2));
// mapcube_y =((map.height / mapHeight * z) + (map.height / 2));
}
}
极度不明白最后求小地图主角坐标的两行代码,求大神做详细解释!!!