using UnityEngine;

using System.Collections;

public class Tank : MonoBehaviour {

    //子弹预设体

    public GameObject bullet;

    //发射点

    private Transform firePoint;

    //移动速度

    public float moveSpeed = 3f;

    //转身速度

    public float turnSpeed = 3f;

    //横纵轴

    float hor;

    float ver;

    void Start()

    {

        //获取发射点

        firePoint = transform.Find ("Top/Gun/FirePoint");

    }

    void Update()

    {

        //获取键盘纵轴值

        ver = Input.GetAxis ("Vertical");

        //坦克前后移动

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

        //获取键盘横轴值

        hor = Input.GetAxis ("Horizontal");

        //坦克转身

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

        //如果按下空格发射子弹

        if (Input.GetKeyDown (KeyCode.Space)) {

            Fire ();

        }

    }

    /// <summary>

    /// 子弹发射

    /// </summary>

    void Fire()

    {

        //生成子弹

        GameObject currentBullet =

            (GameObject)Instantiate (bullet,

                firePoint.position, Quaternion.identity);

        //给子弹一个飞行方向

        currentBullet.GetComponent<Bullet> ().dir = transform.right;

    }

}