Unity) [유니티 2D] 슈터게임 여러 갈래의 탄환 구현

        int bulletAmount = PlayerStats.instance.bulletAmountCharacteristic;

        float rotationZ = 0;
        int bulletCnt = 0;
        bool isEven = false;

        switch (bulletAmount)
        {
            case 1:
                bulletCnt = 1;
                break;
            case 2:
                bulletCnt = 2;
                isEven = true;
                break;
            case 3:
                rotationZ = 20;
                bulletCnt = bulletAmount;
                break;
            case 4:
                rotationZ = 20;
                bulletCnt = bulletAmount - 2;
                isEven = true;
                break;
            case 5:
                rotationZ = 40;
                bulletCnt = bulletAmount;
                break;
            case 6:
                rotationZ = 40;
                bulletCnt = bulletAmount - 2;
                isEven = true;
                break;
            case 7:
                rotationZ = 60;
                bulletCnt = bulletAmount;
                break;
            case 8:
                rotationZ = 60;
                bulletCnt = bulletAmount - 2;
                isEven = true;
                break;
            case 9:
                rotationZ = 80;
                bulletCnt = bulletAmount;
                break;
            case 10:
                rotationZ = 80;
                bulletCnt = bulletAmount - 2;
                isEven = true;
                break;
            default:
                break;
        }

        if (isEven) 
        {
            for (int i = 0; i < 2; i++)
            {
                var go = Instantiate(this.bulletGo);
                go.transform.rotation = this.lookRotation;
                go.GetComponent<Bullet>().Init();
                go.transform.position = this.bulletPoints[i].transform.position;
            }
        }

        for (int i = 0; i < bulletCnt; i++)
        {
            if (bulletAmount == 2) continue;
            var rotation = Quaternion.Euler(0, 0, rotationZ);
            var go = Instantiate(this.bulletGo);
            go.transform.rotation = this.lookRotation * rotation;
            go.GetComponent<Bullet>().Init();
            go.transform.position = this.bulletPoint.transform.position;
            if (isEven && rotationZ == 20) rotationZ = 0;
            rotationZ -= 20;
        }

switch문을 사용하여 간단하게 구현하였습니다.