/// <summary>
/// Handles a Danmaku collision. Only ever called with Danmaku that pass the filter.
/// </summary>
/// <param name="danmaku">the danmaku that hit the collider.</param>
/// <param name="info">additional information about the collision</param>
protected override void DanmakuCollision(Danmaku danmaku,
RaycastHit2D info)
{
danmaku.Destroy();
}
/// <summary>
/// Handles a Danmaku collision. Only ever called with Danmaku that pass the filter.
/// </summary>
/// <param name="danmaku">the danmaku that hit the collider.</param>
/// <param name="info">additional information about the collision</param>
protected override void DanmakuCollision(Danmaku danmaku,
RaycastHit2D info) {
danmaku.Destroy();
}