public void FireShot()
{
if (_playerShots.Count < MaximumPlayerShots)
{
var location = new Point(_player.Location.X + _player.Area.Width / 2, _player.Location.Y);
Shot shot;
//TODO: Add more kinds of shots
switch (CurrentShotType)
{
case ShotType.BasicShot:
shot = new BasicShot(location, Direction.Up);
break;
case ShotType.LazerShot:
shot = new LazerShot(location, Direction.Up);
break;
case ShotType.HomingShot:
shot = new HomingShot(location, Direction.Up);
break;
default:
throw new ArgumentException(nameof(CurrentShotType));
}
_playerShots.Add(shot);
OnShotMoved(shot, false);
}
}
private void ReturnFire()
{
if (_invaders.Count <= 0)
{
return;
}
var invaderShots =
from shot in _invaderShots
select shot;
if (invaderShots.Count() > Waves + 1 || _random.Next(10) < 10 - Waves)
{
return;
}
var avaliableInvaderGroups =
from invader in _invaders
group invader by invader.Location.X
into invaderGroup
orderby invaderGroup.Key descending
select invaderGroup;
var avaiInvaderGroupsList = avaliableInvaderGroups.ToList();
var randomGroup = avaiInvaderGroupsList[_random.Next(avaiInvaderGroupsList.Count)];
var bottomInvader = randomGroup.Last();
var shotLocation = new Point(bottomInvader.Area.X + bottomInvader.Area.Width / 2,
bottomInvader.Area.Bottom + 2);
Shot newShot;
switch (bottomInvader.InvaderType)
{
case InvaderType.Spaceship:
newShot = new HomingShot(shotLocation, Direction.Down, _player);
break;
case InvaderType.Bug:
newShot = new LazerShot(shotLocation, Direction.Down);
break;
case InvaderType.Saucer:
newShot = new LazerShot(shotLocation, Direction.Down);
break;
case InvaderType.Satellite:
newShot = new BasicShot(shotLocation, Direction.Down);
break;
case InvaderType.Star:
newShot = new BasicShot(shotLocation, Direction.Down);
break;
default:
throw new ArgumentException(nameof(bottomInvader));
}
_invaderShots.Add(newShot);
OnShotMoved(newShot, false);
}