private int GetBulletDisplayPart(Bullet bullet)
{
return Math.Max(0, GetBulletActualWidth(bullet) - GetBulletHidePart(bullet));
}
private int GetBulletActualWidth(Bullet bullet)
{
return bullet.GetSize(Font).Width + MarginCol;
}
private int GetBulletHidePart(Bullet bullet)
{
return Math.Max(0, GetBulletWidth(bullet) - Width);
}
private int GetBulletWidth(Bullet bullet)
{
return bullet.X + GetBulletActualWidth(bullet);
}
private void AddBullet(LinkedList<Bullet> row, Bullet bullet, int delayMS)
{
if (row.Count > 0)
{
bullet.StartX = bullet.X = Math.Max(Width, GetBulletWidth(row.Last()));
}
bullet.ShotTime = GetPlayTime();
bullet.Speed = 1.0 * GetBulletWidth(bullet) / (DurationTime * millisecondsPerSeconds);
if (delayMS > 0)
{
bullet.StartX = bullet.X += (int)Math.Round(bullet.Speed * delayMS);
}
row.AddLast(new LinkedListNode<Bullet>(bullet));
}
private void Shot(Bullet bullet, int delayMS)
{
if (Rows.Count == 0)
return;
for (int i = 0; i < Rows.Count; ++i)
{
if (IsFull(i))
continue;
AddBullet(Rows[i], bullet, delayMS);
return;
}
var row = Rows.OrderBy(r => r.Min(b => GetBulletHidePart(b))).FirstOrDefault();
AddBullet(row, bullet, delayMS);
}
public void Shot(string content, Color color, int delayMS = 0)
{
var b = new Bullet() { Content = content, Color = color, X = Width, StartX = Width, State = BulletState.Ready };
Shot(b, delayMS);
}
private void UpdateBullet(Bullet bullet)
{
switch (bullet.State)
{
case BulletState.Ready:
if (GetBulletDisplayPart(bullet) > 0)
bullet.State = BulletState.Flying;
break;
case BulletState.Flying:
if (GetBulletWidth(bullet) <= 0)
bullet.State = BulletState.Dropped;
break;
case BulletState.Dropped:
break;
}
}