Demon_Tank （坦克移动发射子弹）

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;
    }

}