/// <summary>
/// When a ship is hit by a projectile then remove the a health point remove
/// the projectile form the world
/// </summary>
private void HitAProjectile(Ship ship, Projectile projectile)
{
if (kingIsOn)
{
// find the owner of the projectile
int shipID = projectile.GetOwner();
if (allShips.TryGetValue(shipID, out Ship projectileShip))
{
// if the projectile is from the king or the ship is the king then...
if (ship.IsKing() || projectileShip.IsKing())
{
// subtract a health point from the ship
ship.SetHP(ship.GetHP() - 1);
if (!ship.IsAlive())
{
// increase the ship's score who shot the projectile by 1
projectileShip.SetScore(projectileShip.GetScore() + 1);
}
// register that the projectile hit a non-team member
ship.ShotsHit++;
}
if (ship.IsKing() && !ship.IsAlive())
{
// make sure that the ship that died is no longer king
ship.SetKing(false);
ship.SetName(ship.GetName().Substring(5));
// select a new king
Ship newKingShip = RandomShip();
newKingShip.SetKing(true);
newKingShip.SetName("King " + newKingShip.GetName());
}
}
// set the projectile to dead
projectile.Alive(false);
}
else
{
// subtract a health point
ship.SetHP(ship.GetHP() - 1);
if (!ship.IsAlive())
{
// find the owner of the projectile
int shipID = projectile.GetOwner();
allShips.TryGetValue(shipID, out Ship projectileShip);
// increase the ship's score who shot the projectile by 1
projectileShip.SetScore(projectileShip.GetScore() + 1);
}
// set the projectile to dead
projectile.Alive(false);
// register that the projectile hit a ship
ship.ShotsHit++;
}
}
/// <summary>
/// Draws a ship object from the world.
/// </summary>
private void ShipDrawer(object o, PaintEventArgs e)
{
Ship s = o as Ship;
if (s.GetHP() > 0)
{
Image image = DrawShip(s);
Rectangle r = new Rectangle(-(shipRadius / 2), -(shipRadius / 2), shipRadius, shipRadius);
e.Graphics.DrawImage(image, r);
}
}