using UnityEngine;

using System.Collections;

public class Tank : MonoBehaviour {

    //坦克面积结构体对象

    public TankArea tankArea;

    private float hor, ver;

    //坦克行走的速度，以及掉头速度

    public float moveSpeed = ;

    public float turnSpeed = ;

    void Start()

    {

        hor = Input.GetAxis("Horizontal");

        ver = Input.GetAxis("Vertical");

    }

    void Update()

    {

        //t坦克转身

        hor = Input.GetAxis("Horizontal");

        transform.eulerAngles += hor * Vector3.up * turnSpeed;

       //坦克前后行进

        ver = Input.GetAxis("Vertical");

        transform.position += transform.right * ver * Time.deltaTime * moveSpeed;

        //实时同步坦克面积结构体对象

        tankArea.TankInit (transform.position.x, transform.position.z);

    }

}

using UnityEngine;

using System.Collections;

using System.Collections.Generic;

public class EnemyCreater : MonoBehaviour {

    //敌方坦克预设体

    public GameObject enemyPrefab;

    //场面上的所有坦克

    private List<Tank> allTank;

    //主角坦克

    private Tank playerArea;

    //计时器

    private float timer;

    //生成坦克的时间间隔

    public float interval = ;

    void Awake()

    {

        allTank = new List<Tank> ();

    }

    void Start()

    {

        //找到主角TankArea对象

        playerArea = GameObject.FindWithTag ("Player").

            GetComponent<Tank> ();

        //将主角坦克添加到列表中

        allTank.Add (playerArea);

    }

    void Update()

    {

        //计时器计时

        timer += Time.deltaTime;

        //计时结束

        if (timer >= interval) {

            ///TODO:生成坦克

            EnemyInit();

            //计时器清零

            timer = ;

        }

    }

    /// <summary>

    /// 生成坦克

    /// </summary>

    void EnemyInit()

    {

        //随机位置

        float currentX;

        float currentZ;

        do {

            //开始随机

            currentX = Random.Range (-23.0f, 23.0f);

            currentZ = Random.Range (-23.0f, 23.0f);

        } while (!EnemyCheck(currentX,currentZ));

        //可用位置

        Vector3 canUsePos = new Vector3(currentX,,currentZ);

        //生成

        GameObject current = Instantiate (enemyPrefab,

            canUsePos,

            Quaternion.identity) as GameObject;

        //更新当前坦克列表

        allTank.Add (current.GetComponent<Tank> ());

    }

    /// <summary>

    /// 坦克位置检测

    /// </summary>

    /// <returns>True为可用，false为不可用.</returns>

    /// <param name="x">The x .</param>

    /// <param name="z">The z .</param>

    bool EnemyCheck(float x,float z)

    {

        //遍历所有坦克

        foreach (var currentT in allTank) {

            //检测当前坦克位置是否与该范围冲突

            bool canUse = !currentT.tankArea.PositionCheck (new Vector3 (x, , z));

            //如果冲突

            if (!canUse)

                //返回不可用

                return false;

        }

        //返回可用

        return true;

    }

}

需要引用的TankArea脚本

using UnityEngine;

using System.Collections;

public struct TankArea

{

    //坦克坐标

    Vector2 position;

    //左下坐标

    public Vector2 leftDown;

    //右上坐标

    public Vector2 rightUp;

    public void TankInit(float x,float z)

    {

        //设置坦克位置

        position = new Vector2 (x,z);

        //生成左上及右下点坐标

        leftDown = new Vector2 (x-,z-2.7f);

        rightUp = new Vector2 (x+,z+4.2f);

    }

    /// <summary>

    /// 位置检测

    /// </summary>

    /// <returns>如果该位置在范围内返回True，否则返回false</returns>

    /// <param name="pos">传入的坦克位置.</param>

    public bool PositionCheck(Vector3 pos)

    {

        if (pos.x > leftDown.x

           && pos.x < rightUp.x

           && pos.z > leftDown.y

           && pos.z < rightUp.y) {

            return true;

        }

        return false;

    }

}