public static RocketsState TickRockets(GameConfigState gameConfigState, RocketsState rocketsState, PlayerState playerState, PlayerInput playerInput)
{
List <Vector2i> newPositions = rocketsState.Positions.Select(position => position + new Vector2i(0, -1)).Where(position => position.Y >= 0).ToList();
if (playerInput == PlayerInput.Fire && newPositions.Count < gameConfigState.MaxRockets)
{
newPositions.Add(new Vector2i(playerState.Position, gameConfigState.Height - 1));
}
return(new RocketsState(newPositions));
}
private static RocketsState ResolveRocketCollisions(RocketsState rocketsState, List <Tuple <int, int> > alienRocketCollisions)
{
if (alienRocketCollisions.Count != 0)
{
List <Vector2i> remainingPositions = rocketsState.Positions.Where((position, index) => !alienRocketCollisions.Exists(collision => index == collision.Item2)).ToList();
return(new RocketsState(remainingPositions));
}
else
{
return(rocketsState);
}
}
public static WorldState CreateNewWorldState(int width, int height, int maxRockets, int aliensWidth, int aliensHeight, int initialLives)
{
GameConfigState gameConfigState = new GameConfigState(width, height, maxRockets, aliensWidth, aliensHeight);
PlayerState playerState = new PlayerState(width / 2);
AliensState aliensState = CreateNewAliensState(width, height, aliensWidth, aliensHeight);
AliensMovementState aliensMovementState = new AliensMovementState(AliensMovementState.MovementDirection.Right);
RocketsState rocketsState = new RocketsState(new List <Vector2i>());
BombsState bombsState = new BombsState(new List <Vector2i>());
GameProgressState gameProgressState = new GameProgressState(0, initialLives, false);
WorldState worldState = new WorldState(gameConfigState, playerState, aliensState, aliensMovementState, rocketsState, bombsState, gameProgressState);
return(worldState);
}
public WorldState(GameConfigState gameConfigState, PlayerState playerState, AliensState aliensState, AliensMovementState aliensMovementState,
RocketsState rocketsState, BombsState bombsState, GameProgressState gameProgressState)
{
GameConfigState = gameConfigState;
PlayerState = playerState;
AliensState = aliensState;
AliensMovementState = aliensMovementState;
RocketsState = rocketsState;
BombsState = bombsState;
GameProgressState = gameProgressState;
}
public static WorldState Tick(WorldState worldState, PlayerInput playerInput)
{
PlayerState newPlayerState = TickPlayer(worldState.GameConfigState, worldState.PlayerState, playerInput);
AliensState newAliensState;
AliensMovementState newAliensMovementState;
AliensFiringInput newAliensFiringInput;
bool createNewAliens = (worldState.AliensState.RelativePositions.Count == 0);
if (createNewAliens)
{
newAliensState = CreateNewAliensState(worldState.GameConfigState.Width, worldState.GameConfigState.Height,
worldState.GameConfigState.AliensWidth, worldState.GameConfigState.AliensHeight);
newAliensMovementState = new AliensMovementState(AliensMovementState.MovementDirection.Right);
newAliensFiringInput = new AliensFiringInput(false, 0);
}
else
{
TickAliens(worldState.GameConfigState, worldState.AliensState, worldState.AliensMovementState, out newAliensState, out newAliensMovementState, out newAliensFiringInput);
}
RocketsState newRocketsState = TickRockets(worldState.GameConfigState, worldState.RocketsState, worldState.PlayerState, playerInput);
BombsState newBombsState = TickBombs(worldState.GameConfigState, worldState.BombsState, worldState.PlayerState, worldState.AliensState, newAliensFiringInput);
List <Tuple <int, int> > alienRocketCollisions = FindAlienRocketCollisions(newAliensState, newRocketsState);
List <int> playerBombCollisions = FindPlayerBombCollisions(worldState.GameConfigState, newBombsState, newPlayerState);
AliensState newAliensState2 = ResolveAlienCollisions(newAliensState, alienRocketCollisions);
RocketsState newRocketsState2 = ResolveRocketCollisions(newRocketsState, alienRocketCollisions);
GameProgressState newGameProgressState = TickGameProgress(worldState.GameConfigState, worldState.GameProgressState, newAliensState2, alienRocketCollisions.Count, playerBombCollisions.Count != 0);
return(new WorldState(worldState.GameConfigState, newPlayerState, newAliensState2, newAliensMovementState, newRocketsState2, newBombsState, newGameProgressState));
}
private static List <Tuple <int, int> > FindAlienRocketCollisions(AliensState aliensState, RocketsState rocketsState)
{
List <Tuple <int, int> > collisions = new List <Tuple <int, int> >();
for (int rocketIndex = 0; rocketIndex < rocketsState.Positions.Count; rocketIndex++)
{
Vector2i rocketPosition = rocketsState.Positions[rocketIndex];
int alienIndex = aliensState.RelativePositions.FindIndex(alienRelativePosition => (alienRelativePosition + aliensState.TopLeft) == rocketPosition);
if (alienIndex != -1)
{
collisions.Add(new Tuple <int, int>(alienIndex, rocketIndex));
}
}
return(collisions);
}