敌人AI攻击方法的编写

老师 | Trigger

学习者 |小白

出品 | Siki 学院

```java

public class Enemy : MonoBehaviour

{

//属性值

public float movespeed = 3;

private Vector3 bullectEulerAngles;

private float v = -1;

private float h;

//引用

private SpriteRenderer sr;

public Sprite[] tanksprite;// 上 右 下 左

public GameObject bullectPrafabs;

public GameObject explosionPrefab;

//计时器

private float timeVal;

private float timeValChangeDirection;//改变方向的计时器

private void Awake()

{

sr = GetComponent();

}

void Update()

{

//攻击的时间间隔

if (timeVal >= 3f)

{

Attack();

}

else

{

timeVal += Time.deltaTime;

}

}

private void FixedUpdate()

{

Move();

}

private void Attack()

{

if (Input.GetKeyDown(KeyCode.Space))

{

Instantiate(bullectPrafabs, transform.position, Quaternion.Euler(transform.eulerAngles + bullectEulerAngles));

timeVal = 0;

}

}

//坦克的移动方法

private void Move()

{

if (timeValChangeDirection >= 4)//如果攻击后4秒产生转向

{

int num = Random.Range(0, 8);

if (num > 5)//向下走

{

v = -1;

h = 0;

}

else if (num == 0)//往回走

{

v = 1;

h = 0;

}

else if (num > 0 && num <= 2)//向左走

{

h = -1;

v = 0;

}

else if (num > 2 && num <= 4)//向右走

{

h = 1;

v = 0;

}

timeValChangeDirection = 0; //计时器清零

}

else

{

timeValChangeDirection += Time.fixedDeltaTime; //计时器累加

}

transform.Translate(Vector3.up *this.v* movespeed * Time.fixedDeltaTime, Space.World);

if (v < 0)

{

sr.sprite = tanksprite[2];

bullectEulerAngles = new Vector3(0, 0, -180);

}

else if (v > 0)

{

sr.sprite = tanksprite[0];

bullectEulerAngles = new Vector3(0, 0, 0);

}

transform.Translate(Vector3.up * v * movespeed * Time.fixedDeltaTime, Space.World);

if (v != 0)

{

return;

}

transform.Translate(Vector3.right * h * movespeed * Time.fixedDeltaTime, Space.World);

if (h < 0)

{

sr.sprite = tanksprite[3];

bullectEulerAngles = new Vector3(0, 0, 90);

}

else if (h > 0)

{

sr.sprite = tanksprite[1];

bullectEulerAngles = new Vector3(0, 0, -90);

}

}

private void Die()

{

//爆炸特效

Instantiate(explosionPrefab, transform.position, transform.rotation);

//死亡方法

Destroy(gameObject);

}

private void OnCollisionEnter2D(Collision2D collision)

{

if (collision.gameObject.tag == "Enemy")

{

timeValChangeDirection = 4;

}

}

}

```

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