public static GameProgressState TickGameProgress(GameConfigState gameConfigState, GameProgressState gameProgressState, AliensState aliensState, int aliensKilled, bool playerCollidedWithBomb)
{
Vector2i topLeft, bottomRight;
aliensState.GetAbsoluteBoundingBox(out topLeft, out bottomRight);
int newScore = gameProgressState.Score + aliensKilled;
int newLives = Math.Max(gameProgressState.Lives - (playerCollidedWithBomb ? 1 : 0), 0);
bool newGameOver = gameProgressState.GameOver || (newLives == 0 || (bottomRight.Y >= gameConfigState.Height));
return(new GameProgressState(newScore, newLives, newGameOver));
}
public static void TickAliens(GameConfigState gameConfigState, AliensState aliensState, AliensMovementState aliensMovementState,
out AliensState newAliensState, out AliensMovementState newAliensMovementState, out AliensFiringInput newAliensFiringInput)
{
Vector2i topLeft, bottomRight;
aliensState.GetAbsoluteBoundingBox(out topLeft, out bottomRight);
AliensMovementState.MovementDirection nextMovementDirection = ChooseNewAliensMovementDirection(gameConfigState, aliensMovementState, topLeft, bottomRight);
Dictionary <AliensMovementState.MovementDirection, Vector2i> movementDirectionToDelta =
new Dictionary <AliensMovementState.MovementDirection, Vector2i>
{
{ AliensMovementState.MovementDirection.Left, new Vector2i(-1, 0) },
{ AliensMovementState.MovementDirection.Right, new Vector2i(1, 0) },
{ AliensMovementState.MovementDirection.Down, new Vector2i(0, 1) },
};
Vector2i movementDelta = movementDirectionToDelta[nextMovementDirection];
newAliensState = new AliensState(aliensState.TopLeft + movementDelta, aliensState.RelativePositions);
newAliensMovementState = new AliensMovementState(nextMovementDirection);
TickAliensFiring(aliensState, out newAliensFiringInput);
}