又又一天的unity学习总结

~~~又看了一下午加晚上的教程，还是siki老师的坦克大战

做了下总结

1、通过刚体来施加力来使物体移动

先定义个初速度，用的GetAxis（）；这个的参数是轴，检测对应的轴，会返回值-1~1；默认是wasd和方向键都可以控制，再让刚体的

velocity = transform.forward*返回值*速度;

transform.forward就是坐标前。前后的轴是Vertical 左右旋转的轴是 Horizontal 同样的。如果是两个相同的但是控制不同的，可以在轴那里复制个轴然后分别改名字。在edit中Project Setting 中Input ~。用GetAxis（）来获取那个轴，返回值。根据坐标名称，返回虚拟坐标系中的值。

2、实现子弹

就是对子弹先进行设置，然后把子弹作为预制体，再创建一个空物体，在空物体上实例子弹就可以了。

GameObject.Instantiate(shellprefab,firePosition.position,firePosition.rotation)

并给一个初速度

go.GetComponent<Rigidbody>().velocity =go.transform.forward*shellSpeed;

3、Update与FixedUpdate的区别

FixedUpdate是会在每个固定的时间间隔被调用，FixeduPdate不受帧率的变化。Update是一帧一帧来的。

4、Transform.Find()

参数是一个对象的名字，这个可以通过写想要的对象的名字来获取，会返回对应的对象。

firePosition = transform.Find ("FirePosition");

5、触发器发消息

collider.sendMessage();

可以在触发检测到了后给触发的对象发消息，也就是调用那个消息也就是函数的名字。

collider.SendMessage("TankDamage");

void TankDamage(){
if (hp <= 0)
return;
hp -= Random.Range(10,20);
if(hp<=0){
AudioSource.PlayClipAtPoint(siwang,transform.position);
GameObject.Instantiate (TankSile, transform.position + Vector3.up, transform.rotation);
Destroy (this.gameObject);
}

6、摄像头的视野跟随

对于两个物体的，可以以他们距离的中心来跟随。

先计算出现在设定好的摄像头与他们两个物体之间中心的距离，然后在此基础上，摄像头也就是去改变坐标。设置摄像头的视野大小。先找出比例，可以是两个物体之间的距离与现在摄像头视野大小做比例，然后让摄像头的视野大小一直是这个比例就可以了。

public Transform play1;
public Transform play2;
private Vector3 cha;
private Camera camera;
// Use this for initialization
void Start () {
cha = transform.position-(play1.position+play2.position)/2;
camera = this.GetComponent<Camera> ();
}

// Update is called once per frame
void Update () {
if (play1 == null || play2 == null)
return;
transform.position =  cha+(play1.position+play2.position)/2;
float distance = Vector3.Distance (play1.position,play2.position);
float size = distance * 1.09f;
camera.orthographicSize = size;
}

分享下各个脚本的代码

Tankovement

public class Tankovement : MonoBehaviour {
public float angularSpeed = 1;
public float speed =2.0f;
public Rigidbody rigidbody;
public int number =1;

public AudioSource audio;
// Use this for initialization
void Start () {
rigidbody = this.GetComponent<Rigidbody> ();
audio = this.GetComponent<AudioSource>();
}

void FixedUpdate()
{

float v = Input.GetAxis ("VerticalPlayer"+number);
rigidbody.velocity = transform.forward * v * speed;
float h = Input.GetAxis ("HorizontalPlayer"+number);
rigidbody.angularVelocity = transform.up * h * angularSpeed;

}
}

shiyegensui

public class shiyegensui : MonoBehaviour {

public Transform play1;
public Transform play2;
private Vector3 cha;
private Camera camera;
// Use this for initialization
void Start () {
cha = transform.position-(play1.position+play2.position)/2;
camera = this.GetComponent<Camera> ();
}

// Update is called once per frame
void Update () {
if (play1 == null || play2 == null)
return;
transform.position =  cha+(play1.position+play2.position)/2;
float distance = Vector3.Distance (play1.position,play2.position);
float size = distance * 1.09f;
camera.orthographicSize = size;
}
}

TankAttack

public class TankAttack : MonoBehaviour {

private Transform firePosition;
public GameObject shellprefab;
public KeyCode fireKey = KeyCode.Space;
public float shellSpeed=15;
public  AudioClip fashe;
// Use this for initialization
void Start () {

firePosition = transform.Find ("FirePosition");
}

// Update is called once per frame
void Update () {
if (Input.GetKeyDown (fireKey)) {
AudioSource.PlayClipAtPoint(fashe,transform.position);
GameObject go=  GameObject.Instantiate(shellprefab,firePosition.position,firePosition.rotation)as GameObject ;
go.GetComponent<Rigidbody>().velocity =go.transform.forward*shellSpeed;
}

}
}

TankHealth

public class TankHealth : MonoBehaviour {

public float hp =100;
public GameObject TankSile;
public AudioClip  siwang;

// Use this for initialization
void Start () {

}

// Update is called once per frame
void Update () {

}

void TankDamage(){
if (hp <= 0)
return;
hp -= Random.Range(10,20);
if(hp<=0){
AudioSource.PlayClipAtPoint(siwang,transform.position);
GameObject.Instantiate (TankSile, transform.position + Vector3.up, transform.rotation);
Destroy (this.gameObject);
}

}
}

Shell

public class Shell : MonoBehaviour {
public GameObject shellexprafab;
private AudioSource audio;
public AudioClip baozha;

void Start(){

}

public void OnTriggerEnter(Collider collider){
AudioSource.PlayClipAtPoint (baozha,transform.position);
GameObject.Instantiate (shellexprafab,this.transform.position,this.transform.rotation);
GameObject.Destroy (this.gameObject);
if(collider.tag=="Tank"){

collider.SendMessage("TankDamage");
}
}
}

还好C#不是很难，而且我这几天接触的都还是比较简单的。这几天unity就先学习到这，我也发现了unity真的很好用，但是api好多…….很多还是现用现百度谷歌把。这几天收获很大。

今天是乌云白帽大会啊，看会直播~~