[게임 매니악스 슈팅 게임 알고리즘] 조준탄 Unity 로 따라하기

using UnityEngine;
 
public class InitAimingBullet : MonoBehaviour {
 
    public Transform enemy;
    public Transform main;
    public float bulletSpeed;
 
    Vector2 mainPos;
    Vector2 enemyPos;
    Vector2 bulletPos;
    Vector2 bulletSpeedVector;
    float distance;
 
    public Vector2 GetBulletSpeedVector()
    {
        mainPos = main.transform.position;
        enemyPos = enemy.transform.position;
        distance = Vector2.Distance(mainPos, enemyPos);
 
        if (distance != 0)
        {
            bulletSpeedVector.x = (mainPos.x - enemyPos.x) / distance * bulletSpeed;
            bulletSpeedVector.y = (mainPos.y - enemyPos.y) / distance * bulletSpeed;
            return bulletSpeedVector;
        }
        else
        {
            bulletSpeedVector.x = 0;
            bulletSpeedVector.y = bulletSpeed;
            return bulletSpeedVector;
        }
    }
    
 
}
 
 
 
 

using UnityEngine;
 
public class MoveAimingBullet : MonoBehaviour
{
    public Vector2 bulletSpeedVector;
    private void Update()
    {
        transform.Translate(bulletSpeedVector);
    }
}
 
 

using UnityEngine;
 
public class PlayerMove : MonoBehaviour {
 
    public float speed;
 
    void Update () {
 
        Vector2 v2;
        v2.x = Input.GetAxis("Horizontal");
        v2.y = Input.GetAxis("Vertical");
        v2 = v2.normalized;
        transform.Translate(v2 * speed * Time.deltaTime);
    }
}
 

using UnityEngine;
 
public class EnemyShoot : MonoBehaviour {
 
    public GameObject bullet;
    public InitAimingBullet initAimingBullet;
 
    private void Start()
    {
        InvokeRepeating("Shoot",0, 5.0f);
    }
 
    void Shoot()
    {
        GameObject bullet = Instantiate(this.bullet, transform.position, Quaternion.identity);
        bullet.GetComponent<MoveAimingBullet>().bulletSpeedVector = initAimingBullet.GetBulletSpeedVector();
    }
}