/// <summary>
/// "Physics" collision for a Zetromino piece
/// </summary>
/// <param name="piece"> Piece to check collision from</param>
/// <param name="rotation"> Rotation of the piece</param>
/// <param name="posX"> position X to check</param>
/// <param name="posY"> position Y to check</param>
/// <returns> False if the piece can't be in the position,
/// True if it can</returns>
bool PieceFits(Zetromino piece, int rotation, int posX, int posY)
{
// Number 4 because pieces cannot be bigger than a 4x4
for (int px = 0; px < 4; px++)
{
for (int py = 0; py < 4; py++)
{
// Index into piece
int pi = RotatePiece(px, py, rotation);
// Get game pos of index
int gi = (posY + py) * _gameDim.x + (posX + px);
// If its inside the game field
if (posX + px >= 0 && posX + px < _gameDim.x)
{
if (posY + py >= 0 && posY + py < _gameDim.y)
{
// Is the game field empty in the next position
if (piece.Shape[pi].Equals('X') && board[gi] != 0)
{
return(false);
}
}
}
}
}
return(true);
}
/// <summary>
/// Picks a new piece to be used as the current piece and resets values
/// </summary>
private void PickNewPiece()
{
_currentPiece = _spawner.GetNewPiece();
_currentX = _spawn.x;
_currentY = _spawn.y;
_pieceRotation = 0;
_nextPiecePreview.Content = _spawner.NextShape;
}
/// <summary>
/// Creates a new Zetronimo
/// </summary>
/// <returns> Returns the new Zetronimo piece</returns>
public Zetromino GetNewPiece()
{
Zetromino newPiece = new Zetromino
(NextShape, _currentPiece);
// Pick the next piece
_currentPiece = _rnd.Next() % 7;
NextShape = _PIECES[_currentPiece];
return(newPiece);
}
/// <summary>
/// Zetris board constructor
/// </summary>
/// <param name="playerName">Current player name</param>
public ZetrisBoard(string playerName)
{
_playerName = playerName;
// Classic tetris dimensions
_gameDim = new Vector2(12, 18);
// Spawn location
_spawn = new Vector2((_gameDim.x / 2) - 2, 0);
// Current piece X and Y position
_currentX = _spawn.x;
_currentY = _spawn.y;
_spawner = new PieceSpawner();
_currentPiece = _spawner.GetNewPiece();
_pieceRotation = 0;
_pieceAcceleration = 16;
_hasRotated = false;
_lines = new List <int>(4);
_pieceCounter = 0;
_scoreDisplay = new ScoreDisplay(new Vector2(_gameDim.x, _gameDim.y - 7));
_scoreSystem = new ScoreSystem(_scoreDisplay.UpdateScore);
// Create the board
board = new byte[_gameDim.x * _gameDim.y];
for (int x = 0; x < _gameDim.x; x++)
{
for (int y = 0; y < _gameDim.y; y++)
{
board[y * _gameDim.x + x] =
(x == 0 || x == _gameDim.x - 1 || y == _gameDim.y - 1)
// 9 is the last character of the board string in Game
? (byte)9 : (byte)0;
}
}
Childs = new List <IGameObject>();
_nextPiecePreview = new PreviewBox(new Vector2
(_gameDim.x, _gameDim.y + 3), "Next Piece", 'o');
Childs.Add(_nextPiecePreview);
Childs.Add(_scoreDisplay);
_nextPiecePreview.Content = _spawner.NextShape;
lineComplete += _scoreSystem.LineComplete;
piecePlaced += _scoreSystem.PiecePlaced;
}
