private void OnStartGame(object sender, ExecutedRoutedEventArgs e)
{
BombCount = (int)((Rows * Columns) * (Difficulty / 10d));
_gameRules = GameRules.NewGame(Rows, Columns, BombCount);
// HACK: force update crap (as well as before timer starts)
OnPropertyChanged("MineField");
IsGameConfigEnabled = false;
CheckCurrentGameState();
}
internal static GameRules NewGame(int rows, int cols, int bombCount)
{
// lets fill out a new chunk of state for someone
var newGameRules = new GameRules
{
GameField = new ObservableCollection<FieldSpot>(CreateNewField(rows, cols)),
BombCount = bombCount,
Rows = rows,
Columns = cols
};
SpreadSomeBombs(newGameRules);
newGameRules.GameState = GameState.Initialized;
return newGameRules;
}
public MineSweeperViewModel(MainView owner)
{
_owner = owner;
_owner.CommandBindings.Add(new CommandBinding(FieldSelectedCommand, OnFieldSelected, CanFieldSelectExecute));
_owner.CommandBindings.Add(new CommandBinding(FieldFlaggedCommand, OnFieldFlagged, CanFieldSelectExecute));
_owner.CommandBindings.Add(new CommandBinding(StartGameCommand, OnStartGame));
_owner.CommandBindings.Add(new CommandBinding(ResetGameCommand, OnForceResetGame));
_uiTimer = new DispatcherTimer(TimeSpan.FromMilliseconds(UI_UPDATE_RATE_MS), DispatcherPriority.Background, OnUiUpdateTimerTick, _owner.Dispatcher);
// give some defaults here for initial window load to not be empty
Difficulty = 1;
Rows = 8;
Columns = 8;
BombCount = 5;
_gameRules = GameRules.NewGame(Rows, Columns, BombCount);
// kick off a fresh game
ResetGame();
}
//private static FieldSpot FieldAt(IEnumerable<FieldSpot> fields, int row, int col) { return fields != null ? fields.FirstOrDefault(f => f.Row == row && f.Column == col) : null; }
//private FieldSpot FieldAt(int row, int col) { return GameField != null ? GameField.FirstOrDefault(f => f.Row == row && f.Column == col) : null; }
private static void SpreadSomeBombs(GameRules gameRules)
{
Debug.Assert(gameRules != null);
Random rand = new Random((int)DateTime.Now.Ticks); // loss of precision is intentional here
List<Point> usedLocations = new List<Point>();
for (int i = 0; i < gameRules.BombCount; i++)
{
Point newBombPoint;
while (usedLocations.Contains(newBombPoint = new Point(rand.Next(gameRules.Rows), rand.Next(gameRules.Columns))) && usedLocations.Count < gameRules.BombCount)
{
// generate a unique point
}
int scalarX = (int)newBombPoint.X;
int scalarY = (int)newBombPoint.Y;
usedLocations.Add(newBombPoint);
var field = gameRules.GameField.FirstOrDefault(f => f.Row == scalarX && f.Column == scalarY);
if (field != null)
field.IsBomb = true;
}
}