/// <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>
/// Takes in a ship Id and adds it to a list of ships which must be
/// removed from the world then sets the ships hp to zero
/// </summary>
public Ship AddShipToCleanup(int shipID)
{
shipsToCleanup.Add(shipID);
Ship deadShip = allShips[shipID];
deadShip.SetHP(0);
return(deadShip);
}
/// <summary>
/// Creates a ship at a random location in the world in a random direction
/// </summary>
public void Respawn(Ship ship)
{
// find random empty location in the world
FindRandomLocation(ship);
// make a new normalized direction vector pointing up
Vector2D dir = new Vector2D(0, -1);
dir.Normalize();
// make a randomizing object
Random r = new Random();
int randAngle = r.Next(0, 360);
//rotate by random angle
dir.Rotate(randAngle);
// sets a random direction for the ship
ship.SetDirection(dir);
// reset ship's velocity
ship.SetVelocity(new Vector2D(0, 0));
// if dead ship is king
if (ship.IsKing())
{
// hit points go up beacuse ship is now king
ship.SetHP(startingHitPoints + 3);
}
else
{
// reset the ship's health to original health
ship.SetHP(startingHitPoints);
}
// reset ships death timer
ship.ResetRespawnTimer();
}
/// <summary>
/// The passed in ship has hit a star so the health points of the
/// ship must be set to zero
/// </summary>
private void HitAStar(Ship ship)
{
// if king game mode is turned on
if (kingIsOn)
{
if (ship.IsKing())
{
// 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());
}
}
// kill the ship
ship.SetHP(0);
}