static IEnumerator ShotAndReturnTransverselyLineBullets(GameObject bulletPrefab, Vector3 position, Quaternion rotation, int bulletsNumber, float angle, float spownTime)
{
List <GameObject> bullets = new List <GameObject>();
float length = Mathf.Tan(angle * Mathf.Deg2Rad / 2) * 2; //数字横行的长度
float eulerZ = rotation.eulerAngles.z;
float startTime = Time.time;
for (int i = 0; i < bulletsNumber; i++)
{
float currentX = length / (bulletsNumber - 1) * i - length / 2;
Quaternion currentRotation = BarrageBase.GetAimRotation(Vector2.zero, new Vector2(currentX, 1));
currentRotation.eulerAngles = currentRotation.eulerAngles + new Vector3(0, 0, eulerZ);
GameObject bullet = GetInactiveBullet(bulletPrefab, position, currentRotation);
bullets.Add(bullet);
BulletMoveUp move = bullet.GetComponent <BulletMoveUp>();
move.speed = move.speed * Mathf.Sqrt(1 + currentX * currentX); //因为到中心点的距离是1，那么所有点的速度比例就和距离相同，直接乘上就行
float expectedTime = spownTime / bulletsNumber * i;
float elapsedTime = Time.time - startTime;
if (expectedTime > elapsedTime)
{
yield return(new WaitForSeconds(expectedTime - elapsedTime));
}
}
yield return(bullets.ToArray());
}
void DoShot()
{
Vector2 shotPoint = new Vector2(Random.Range(-300, 300), Random.Range(0, 500));
Quaternion rotateToPlayer = BarrageBase.GetAimRotation(shotPoint, _playerTransform.position);
BarrageLauncher.ShotRing(_bullet, shotPoint, rotateToPlayer, 18);
//BarrageLauncher.ShotABullet(_bullet, shotPoint, rotateToPlayer);
//BarrageLauncher.ShotFanShaped(_bullet, shotPoint, rotateToPlayer, 9, 60);
//BarrageLauncher.ShotTransverselyLine(_bullet, shotPoint, rotateToPlayer, 17, 60);
//BarrageLauncher.ShotPane(_bullet, shotPoint, rotateToPlayer, 7);
//BarrageLauncher.ShotRingToCenter(_bullet, _playerTransform.position, Quaternion.identity, 8, 400);
UpdateNextShot();
}
private void Update()
{
if (Time.time < _startAimTime)
{
return;
}
if (_playerTransform != null)
{
float rate = Mathf.Min(1, Mathf.InverseLerp(_startAimTime, _endAimTime, Time.time));
Quaternion targetRotation = BarrageBase.GetAimRotation(_bulletMove.transform.position, _playerTransform.position);
_bulletMove.rotation = Quaternion.Lerp(_bulletMove.rotation, targetRotation, rate);
}
else
{
_playerTransform = BarrageBase.GetPlayerTransform();
}
if (Time.time > _endAimTime)
{
enabled = false;
}
}