// c'tor
public TetrisModelImpl()
{
Debug.WriteLine("c'tor TetrisModel");
this.random = new Random();
this.testTetriCounter = 0;
this.board = new TetrisBoard(this.NumRows, this.NumColumns);
this.board.BoardChanged += this.TetrisBoard_Changed;
this.board.LinesCompleted += this.TetrisBoard_LinesCompleted;
this.state = TetrisState.Idle;
this.gameState = GameState.GameIdle;
this.viewCellList = new ViewCellList();
// initialize score management
this.level = 1;
this.lines = 0;
this.score = 0;
// setup timer
this.timerMode = TimerMode.Normal;
this.maxIntervalCounter = MaxIntervalCounter;
this.currentIntervalCounter = 0;
}
public void MoveNonEmptyRowsDown()
{
ViewCellList list = new ViewCellList();
// compute number of complete rows - beginning from the bottom
int completeRows = 0;
for (int row = this.numRows - 1; row >= 0; row--)
{
if (this.IsRowComplete(row))
{
completeRows++;
}
else
{
break;
}
}
// calculate number of rows to move
int startRow = this.numRows - 1;
while (!this.IsRowEmpty(startRow))
{
startRow--;
}
for (int i = this.numRows - 2; i >= startRow; i--)
{
this.CopySingleRow(list, i);
}
this.OnBoardChanged(list);
this.OnLinesCompleted(completeRows);
}
// public interface
public void Clear()
{
// reset internal state of board
for (int i = 0; i < this.numRows; i++)
{
for (int j = 0; j < this.numColumns; j++)
{
this.board[i, j].Color = CellColor.LightGray;
this.board[i, j].State = CellState.Free;
}
}
// update view
ViewCellList list = new ViewCellList();
for (int i = 0; i < this.numRows; i++)
{
for (int j = 0; j < this.numColumns; j++)
{
ViewCell cell = new ViewCell();
cell.Color = CellColor.LightGray;
cell.Point = new CellPoint()
{
X = j, Y = i
};
list.Add(cell);
}
}
this.OnBoardChanged(list);
}
private void OnBoardChanged(ViewCellList list)
{
if (this.BoardChanged != null)
{
this.BoardChanged.Invoke(list);
}
}
// public interface (movement specific methods)
public void SetToTop()
{
this.Set();
ViewCellList list = new ViewCellList();
this.UpdateModifiedCellList(list, this.color);
this.board.PostChanges(list);
}
public void Rotate()
{
ViewCellList list = new ViewCellList();
this.Delete();
this.UpdateModifiedCellList(list, CellColor.LightGray);
this.RotateTetrimino();
this.Set();
this.UpdateModifiedCellList(list, this.color);
this.board.PostChanges(list);
}
public void MoveRight()
{
ViewCellList list = new ViewCellList();
this.Delete();
this.UpdateModifiedCellList(list, CellColor.LightGray);
this.MoveAnchorRight();
this.Set();
this.UpdateModifiedCellList(list, this.color);
this.board.PostChanges(list);
}
public bool MoveDown()
{
if (!this.CanMoveDown())
{
return(false);
}
ViewCellList list = new ViewCellList();
this.Delete();
this.UpdateModifiedCellList(list, CellColor.LightGray);
this.MoveAnchorDown();
this.Set();
this.UpdateModifiedCellList(list, this.color);
this.board.PostChanges(list);
return(true);
}
public override void UpdateModifiedCellList(ViewCellList list, CellColor color)
{
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X, Y = this.anchorPoint.Y
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X + 1, Y = this.anchorPoint.Y
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X, Y = this.anchorPoint.Y + 1
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X + 1, Y = this.anchorPoint.Y + 1
}));
}
private void CopySingleRow(ViewCellList list, int row)
{
for (int j = 0; j < this.numColumns; j++)
{
// create cell to update view
ViewCell cell = new ViewCell();
cell.Color = this.board[row, j].Color;
cell.Point = new CellPoint()
{
X = j, Y = row + 1
};
list.Add(cell);
// finally copy block one row down ...
// Note: TetrisCell is a 'struct', so '=' works fine --
// In case of a reference type: Clone needed (deep copy) !!!
this.board[row + 1, j] = this.board[row, j];
}
}
// private helper methods
private void TetrisBoard_Changed(ViewCellList list)
{
this.BoardStateChanges = list;
}
public abstract void UpdateModifiedCellList(ViewCellList list, CellColor color);
public override void UpdateModifiedCellList(ViewCellList list, CellColor color)
{
if (this.rotation == RotationAngle.Degrees_0)
{
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X - 1, Y = this.anchorPoint.Y + 1
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X, Y = this.anchorPoint.Y + 1
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X, Y = this.anchorPoint.Y
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X + 1, Y = this.anchorPoint.Y
}));
}
else if (this.rotation == RotationAngle.Degrees_90)
{
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X - 1, Y = this.anchorPoint.Y - 1
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X - 1, Y = this.anchorPoint.Y
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X, Y = this.anchorPoint.Y
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X, Y = this.anchorPoint.Y + 1
}));
}
else if (this.rotation == RotationAngle.Degrees_180)
{
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X - 1, Y = this.anchorPoint.Y
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X, Y = this.anchorPoint.Y
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X, Y = this.anchorPoint.Y - 1
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X + 1, Y = this.anchorPoint.Y - 1
}));
}
else if (this.rotation == RotationAngle.Degrees_270)
{
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X, Y = this.anchorPoint.Y - 1
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X, Y = this.anchorPoint.Y
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X + 1, Y = this.anchorPoint.Y
}));
list.Add(new ViewCell(color, new CellPoint()
{
X = this.anchorPoint.X + 1, Y = this.anchorPoint.Y + 1
}));
}
}
public void PostChanges(ViewCellList list)
{
this.OnBoardChanged(list);
}