public MovingTetromino(TetrisGameBoard gameBoard)
{
m_gameBoard = gameBoard;
Rotation = TetrominoRotation.None;
Column = 3; // starts in the middle
Row = 0;
DescriptiveGrid = null;
}
public MovingTetromino(TetrisGameBoard gameBoard)
{
m_gameBoard = gameBoard;
m_rotation = TetrominoRotation.None;
Column = 3; // starts in the middle
Row = 0;
DescriptiveGrid = null;
}
public bool TryMoveRight()
{
TetrominoRotation rot = Rotation;
BrickType[,] descriptiveGrid = GetRotatedDescriptiveGrid(rot);
int column = Column + 1, row = Row;
return(TryMovement(descriptiveGrid, column, row, rot));
}
public bool TryRotateRight()
{
TetrominoRotation rot = Rotation;
rot = (TetrominoRotation)((int)(rot + 3) % 4); // 3 == -1 mod 4
BrickType[,] descriptiveGrid = GetRotatedDescriptiveGrid(rot);
int column = Column, row = Row;
return(TryMovement(descriptiveGrid, column, row, rot));
}
public override int[] GetRotatedLowerHorizon(TetrominoRotation rotation)
{
switch (rotation)
{
case TetrominoRotation.None:
case TetrominoRotation.UpsideDown:
case TetrominoRotation.Left:
case TetrominoRotation.Right:
default:
return(new int[] { 0, 0 });
}
}
/// <summary>
/// tries to fit the provided tetromino (represented by its descriptiveGrid) into the game board
/// </summary>
/// <param name="descriptiveGrid"></param>
/// <param name="column"></param>
/// <param name="row"></param>
/// <param name="rotation"></param>
/// <returns>true if the provided tetromino could be fit into the game board</returns>
protected bool TryMovement(BrickType[,] descriptiveGrid, int column, int row, TetrominoRotation rotation)
{
bool bottomHit = !m_gameBoard.FitTetrominoToGameBoard(descriptiveGrid, ref column, ref row);
if (!bottomHit && !m_gameBoard.IsTetrominoInCollision(descriptiveGrid, column, row))
{
Rotation = rotation;
DescriptiveGrid = descriptiveGrid;
Column = column;
Row = row;
return(true);
}
return(false);
}
protected override BrickType[,] GetRotatedDescriptiveGrid(TetrominoRotation rotation)
{
switch (rotation)
{
case TetrominoRotation.None:
case TetrominoRotation.UpsideDown:
return(gridRot0);
case TetrominoRotation.Left:
case TetrominoRotation.Right:
default:
return(gridRot90);
}
}
public override void UpdateGrid(TetrominoRotation rotation)
{
switch (rotation)
{
case TetrominoRotation.Initial:
Grid = new int[, ]
{
{ 0, 0, 0, 0 },
{ 1, 1, 1, 1 },
{ 0, 0, 0, 0 },
{ 0, 0, 0, 0 }
};
break;
case TetrominoRotation.Right:
Grid = new int[, ]
{
{ 0, 0, 1, 0 },
{ 0, 0, 1, 0 },
{ 0, 0, 1, 0 },
{ 0, 0, 1, 0 }
};
break;
case TetrominoRotation.Twice:
Grid = new int[, ]
{
{ 0, 0, 0, 0 },
{ 0, 0, 0, 0 },
{ 1, 1, 1, 1 },
{ 0, 0, 0, 0 }
};
break;
case TetrominoRotation.Left:
Grid = new int[, ]
{
{ 0, 1, 0, 0 },
{ 0, 1, 0, 0 },
{ 0, 1, 0, 0 },
{ 0, 1, 0, 0 }
};
break;
}
}
protected override BrickType[,] GetRotatedDescriptiveGrid(TetrominoRotation rotation)
{
return gridRot0;
}
/// <summary>
/// tries to fit the provided tetromino (represented by its descriptiveGrid) into the game board
/// </summary>
/// <param name="descriptiveGrid"></param>
/// <param name="column"></param>
/// <param name="row"></param>
/// <param name="rotation"></param>
/// <returns>true if the provided tetromino could be fit into the game board</returns>
protected bool TryMovement(BrickType[,] descriptiveGrid, int column, int row, TetrominoRotation rotation)
{
bool bottomHit = !m_gameBoard.FitTetrominoToGameBoard(descriptiveGrid, ref column, ref row);
if (!bottomHit && !m_gameBoard.IsTetrominoInCollision(descriptiveGrid, column, row))
{
Rotation = rotation;
DescriptiveGrid = descriptiveGrid;
Column = column;
Row = row;
return true;
}
return false;
}
protected abstract BrickType[,] GetRotatedDescriptiveGrid(TetrominoRotation rotation);
public abstract int[] GetRotatedLowerHorizon(TetrominoRotation rotation);
public bool CanMatch(TetrominoRotation rotation = TetrominoRotation.None)
{
return m_gameBoard.DoesBrickFitToHorizon(m_tetromino.GetRotatedLowerHorizon(rotation));
}
public abstract void UpdateGrid(TetrominoRotation rotation);
public bool CanMatch(TetrominoRotation rotation = TetrominoRotation.None)
{
return(m_gameBoard.DoesBrickFitToHorizon(m_tetromino.GetRotatedLowerHorizon(rotation)));
}
protected abstract BrickType[,] GetRotatedDescriptiveGrid(TetrominoRotation rotation);
public override int[] GetRotatedLowerHorizon(TetrominoRotation rotation)
{
switch (rotation)
{
case TetrominoRotation.None:
case TetrominoRotation.UpsideDown:
return new int[] { 1, 0, 0 };
case TetrominoRotation.Left:
case TetrominoRotation.Right:
default:
return new int[] { 0, 1 };
}
}
protected override BrickType[,] GetRotatedDescriptiveGrid(TetrominoRotation rotation)
{
return(gridRot0);
}
public abstract int[] GetRotatedLowerHorizon(TetrominoRotation rotation);
protected override BrickType[,] GetRotatedDescriptiveGrid(TetrominoRotation rotation)
{
switch (rotation)
{
case TetrominoRotation.None:
case TetrominoRotation.UpsideDown:
return gridRot0;
case TetrominoRotation.Left:
case TetrominoRotation.Right:
default:
return gridRot90;
}
}
// Update is called once per frame
void Update()
{
// Update timers
_timer += Time.deltaTime;
_moveTimer += Time.deltaTime;
// Backup tetromino location and rotation
int x = _tetromino.X;
int y = _tetromino.Y;
TetrominoRotation rotation = _tetromino.Rotation;
bool merge = false;
// If Collision without action -> gameover
if (_tetromino.Collision(_gameBoard))
{
_gameover = true;
}
if (_gameover)
{
return;
}
// Left movement
if (_moveTimer > _moveTime && Input.GetKey(KeyCode.LeftArrow))
{
_tetromino.X--;
_moveTimer = 0;
}
// Right movement
if (_moveTimer > _moveTime && Input.GetKey(KeyCode.RightArrow))
{
_tetromino.X++;
_moveTimer = 0;
}
// Counter-clockwise rotation
if (Input.GetKeyDown(KeyCode.Q))
{
_tetromino.RotateLeft(_gameBoard);
}
// Clockwise rotation
if (Input.GetKeyDown(KeyCode.W))
{
_tetromino.RotateRight(_gameBoard);
}
// Tetromino fall
if (_timer > _dropTime / _dropLevel || (_timer > _quickDropTime && Input.GetKey(KeyCode.DownArrow)))
{
_tetromino.Y++;
_timer = 0;
if (_tetromino.Collision(_gameBoard))
{
merge = true;
}
}
// If collision while moving or falling, revert the last movement
if (_tetromino.Collision(_gameBoard))
{
_tetromino.X = x;
_tetromino.Y = y;
_tetromino.Rotation = rotation;
}
// If tetromino collision because of the fall, merge it into the
// gameboard and spawn a new one
if (merge)
{
_gameBoard.MergeTetromino(_tetromino);
_gameBoard.UpdateTilesPositions();
List <int> fullLines = _gameBoard.CheckFullLines();
if (fullLines.Count > 0)
{
_gameBoard.RemoveLines(fullLines);
UpdateLines(fullLines.Count);
}
SpawnNewTetromino();
}
// Update tetromino tiles on screen
_tetromino.UpdateTilesPositions();
}
