using UnityEngine;using System.Collections;/// <summary>/// GL画框， 该脚本一定要挂载在摄像机上面才可以的/// </summary>public class CameraGL : MonoBehaviour{    public Material mat;      //把第一步建的材质托在上面    public bool shouldDrawRect;    public Vector2 startPos;    public FrameSelect fs;    void OnPostRender()    {        if (shouldDrawRect)        {            Vector2 endPos = Input.mousePosition;            GL.PushMatrix();            mat.SetPass(0);            GL.LoadPixelMatrix();            GL.Begin(GL.QUADS);            GL.Vertex(startPos);            GL.Vertex(new Vector3(startPos.x, endPos.y, 0));            GL.Vertex(endPos);            GL.Vertex(new Vector3(endPos.x, startPos.y, 0));            GL.End();            GL.PopMatrix();            fs.selectSoliders.Clear();            foreach (Solider m in fs.allSoliders)            {                Vector3 pos = m.transform.position;                Vector3 tempPos = Camera.main.WorldToScreenPoint(pos);  //把世界坐标转化为屏幕坐标                Vector3 p1 = startPos;                Vector3 p2 = endPos;                if (startPos.x < endPos.x)                {                    p1.x = endPos.x;                    p2.x = startPos.x;                }                if (startPos.y < endPos.y)                {                    p1.y = endPos.y;                    p2.y = startPos.y;                }                if (tempPos.x > p2.x && tempPos.x < p1.x && tempPos.y > p2.y && tempPos.y < p1.y)                {                    m.select= true;                    fs.selectSoliders.Add(m);                }            }        }    }    void Update()    {        if (Input.GetMouseButtonDown(0))        {            shouldDrawRect = true;            startPos = Input.mousePosition;        }        if (Input.GetMouseButtonUp(0))        {            shouldDrawRect = false;        }    }}

using UnityEngine;using System.Collections;using System.Collections.Generic;using UnityEngine.UI;/// <summary>/// 框选控制/// </summary>public class FrameSelect : MonoBehaviour{    public List<Solider> allSoliders;    public List<Solider> selectSoliders;    void Awake()    {        selectSoliders = new List<Solider>();    }    void Update()    {        if(Input.GetKeyDown(KeyCode.Escape))        {            foreach (Solider item in selectSoliders)            {                item.select = false;            }            selectSoliders.Clear();        }    }}

4士兵类

using UnityEngine;using System.Collections;/// <summary>/// 每一个士兵挂载的类/// </summary>public class Solider : MonoBehaviour{    [SerializeField]    private bool _select;    [SerializeField]    private Color color;    void Awake()    {        _select = false;        color = GetComponent<MeshRenderer>().material.color;    }    public bool select    {        set        {            _select = value;            if (_select)            {                GetComponent<MeshRenderer>().material.color = Color.green;            }            else            {                GetComponent<MeshRenderer>().material.color = color;            }        }        get        {            return _select;        }    }}

大概的就是这样，具体的工程文件，我打成了包在下面的地址上面，可以下载，我用的unity版本是5.1.2f的，如果版本低了会打不开，版本高的话可能存在问题