简单第一人称射击游戏

克隆炮弹和硝烟的预制体。

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class TankFire : MonoBehaviour {
 6
 7     public Transform fire_point;//发射点Transform
 8
 9     /// <summary>
10     /// 子弹的预设体(预先, 设置, 游戏物体)
11     /// </summary>
12     public GameObject bulletPrefab;
13
14     public GameObject FirePrefab;
15     /// <summary>
16     /// 发射的力道
17     /// </summary>
18     public float force;
19
20     void Update()
21     {
22         if (Input.GetKeyDown(KeyCode.Space))//空格键发射子弹
23         {
24             Fire();
25         }
26     }
27     void Fire()
28     {
29         //-----------炮弹和硝烟的克隆
30         GameObject _bullet = Instantiate(bulletPrefab, fire_point.position, fire_point.rotation);
31         GameObject _fireSmoke = Instantiate(FirePrefab, fire_point.position, fire_point.rotation);
32         //给子弹指定是哪个炮管发射的
33         _bullet.GetComponent<BulletSprite>().TankFire = this;
34         _bullet.GetComponent<Rigidbody>().AddRelativeForce(Vector3.forward * force, ForceMode.Impulse);
35         //定时摧毁炮弹和硝烟
36         Destroy(_bullet, 2.5f);
37         Destroy(_fireSmoke, 1.5f);
38     }
39         //射中指定目标计分
40     public Score scoreText;
41     public void ShotTarget(int score)
42     {
43         scoreText.ScoreNum = score;
44     }
45 }    

坦克开火脚本

利用轴的缓动，移动炮管。

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class TankMove : MonoBehaviour {
 6
 7     /// <summary>
 8     /// 炮塔
 9     /// </summary>
10     public Transform turret_bass;
11     /// <summary>
12     /// 旋转速度
13     /// </summary>
14     public float e_Turret_Speed;
15     /// <summary>
16     /// 当前炮头角度值
17     /// </summary>
18     private float eTurret;
19     /// <summary>
20     /// 炮管
21     /// </summary>
22     public Transform cannon_bass;
23     /// <summary>
24     /// 上下移动速度
25     /// </summary>
26     public float e_Cannon_Speed;
27     private float eCannon;
28     /// <summary>
29     /// 当前炮管角度值
30     /// </summary>
31     // Use this for initialization
32     void Start()
33     {
34         //当前炮头和炮管初始值
35         eTurret = turret_bass.localEulerAngles.y;
36         eCannon = cannon_bass.localEulerAngles.x;
37     }
38
39     void Update()//FPS=20
40     {
41         //Time.deltaTime//假设FPS为20,则此值的大小约为20分之一,也就是本帧的运行时间
42         //假设一共需要走speed度,则每一帧应该走的度数是每帧的时间乘以度数
43         //后面的input.GetAxis是为了缓动
44         eTurret += Time.deltaTime * e_Turret_Speed * Input.GetAxis("Horizontal");
45         turret_bass.localEulerAngles = new Vector3(0, eTurret, 0);
46
47         eCannon -= Time.deltaTime * e_Cannon_Speed * Input.GetAxis("Vertical");
48         eCannon = Mathf.Clamp(eCannon, -25, 7);
49         cannon_bass.localEulerAngles = new Vector3(eCannon, 0, 0);
50     }
51 }

移动炮管脚本

利用一条射线，设置准星的现隐。添加名为Bullet的Layer，不让准星出现在炮弹上。

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class CrossHairs : MonoBehaviour {
 6
 7     public Transform fire_point;
 8     public Transform crosshair;
 9     void Start()
10     {
11
12     }
13     Ray ray;
14     RaycastHit hit;
15     void Update()
16     {
17         Vector3 vec = fire_point.rotation * Vector3.forward;
18         ray = new Ray(fire_point.position, vec);//发射一条射线
19         LayerMask layer = 1 << LayerMask.NameToLayer("Default");//获取Layer层的值
20         if (Physics.Raycast(ray, out hit, 1000, layer.value))
21         {
22             crosshair.gameObject.SetActive(true);//显示瞄准点
23             crosshair.position = hit.point;//point是世界坐标系
24         }
25         else
26         {
27             crosshair.gameObject.SetActive(false);
28         }
29     }
30 }

瞄准点脚本

方块每个都有对应得分数，并添加Enemy标签。

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class EnemySprite : MonoBehaviour {
 6
 7     public int socre;
 8     // Use this for initialization
 9     void Start()
10     {
11
12     }
13
14     // Update is called once per frame
15     void Update()
16     {
17
18     }
19 }

敌人属性脚本

检测炮弹是否碰撞方块，调用开火的射中目标的方法

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class BulletSprite : MonoBehaviour
 6 {
 7
 8     public GameObject BulletBroke_Prefab;
 9     // Use this for initialization
10     private TankFire tankFire;
11
12     public TankFire TankFire
13     {
14         set
15         {
16             tankFire = value;
17         }
18     }
19
20     // Use this for initialization
21     void Start()
22     {
23
24     }
25
26     // Update is called once per frame
27     void Update()
28     {
29
30     }
31     private void OnCollisionEnter(Collision collision)
32     {
33         if (collision.gameObject.tag == "Enemy")
34         {
35             tankFire.ShotTarget(collision.gameObject.GetComponent<EnemySprite>().socre);
36
37         }
38         GameObject _bulletbroke = Instantiate(BulletBroke_Prefab, transform.position, transform.rotation);
39         Destroy(_bulletbroke, 3f);
40         Destroy(gameObject);
41     }
42 }

炮弹控制脚本

最后添加UGUI的Text文本。添加Score脚本组件

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4 using UnityEngine.UI;
 5
 6 public class Score : MonoBehaviour
 7 {
 8
 9     private int scoreNum;
10
11     public int ScoreNum
12     {
13         set
14         {
15             scoreNum += value;
16         }
17     }
18
19     // Use this for initialization
20     void Start () {
21
22     }
23
24     // Update is called once per frame
25     void Update ()
26     {
27         ShowScore();
28     }
29
30     void ShowScore()
31     {
32         transform.GetComponent<Text>().text = "Score:"+scoreNum;
33     }
34 }

分数脚本控制

最总效果：