| unity3d游戏开发之发射子弹的源代码 |
详细代码如下：
1. using UnityEngine;
2. using System.Collections;
3.
4. public class Fire : MonoBehaviour {
5.
6. float speed = 5.0f;
7.
8. public GameObject newObject;
9.
10.
11. float firetima = 0.2f;
12. float nexttime = 0.0f;
13.
14.
15. void Update()
16. {
17. float a = -25 * Time.deltaTime;
18. float x = Input.GetAxis("Horizontal") * Time.deltaTime * speed;
19. float z = Input.GetAxis("Vertical") * Time.deltaTime * speed;
20. transform.Translate(x, 0, z);
21. if (Input.GetKey(KeyCode.Z))
22. {
23. transform.Rotate(Vector3.up * a, Space.Self);
24. }
25. if (Input.GetKey(KeyCode.X))
26. {
27. transform.Rotate(Vector3.down * a, Space.Self);
28. }
29. if (Input.GetButton("Fire1") && nexttime < Time.time)
30. {
31. nexttime = firetima + Time.time;
32. GameObject go = Instantiate(newObject, transform.position, transform.rotation) as GameObject;
33. go.rigidbody.AddForce(0, 0, 1231);
34. Destroy(go,2.0f);
35. }
36.
37. }
38.
39. }
接下来，我们要做一个太空大战的小游戏
具体实现效果是：
1、我方点击鼠标左键或按空格键发射子弹，我方子弹连续发射
2、敌方飞机和子弹自动运行，子弹每隔0.5秒向我方发射一颗
3、我方飞机移动时，敌方子弹跟随我方飞机移动
目前实现第一步代码部分
代码如下：
1. using UnityEngine;
2. using System.Collections;
3.
4. public class Player : MonoBehaviour {
5. float speed = -50.0f;
6.
7. public GameObject Myplayer;
8.
9.
10.
11.
12.
13. void Update()
14. {
15. float a = Time.deltaTime;
16. float x = Input.GetAxis("Horizontal") * Time.deltaTime * -speed;
17. float z = Input.GetAxis("Vertical") * Time.deltaTime * -speed;
18. transform.Translate(x, 0, z);
19.
20. if (Input.GetButton("Fire1") )
21. {
22. //nexttime = firetima + Time.time;
23. GameObject go = Instantiate(Myplayer, transform.position, transform.rotation) as GameObject;
24. go.rigidbody.AddForce(0, 0, 1231);
25. Destroy(go,2.0f);
26. }
27.
28. }
29.
30. }
把脚本放到Player身上，（记得给子弹天加刚体），把预设体拖到
