private void piece_MouseDown(object sender, MouseEventArgs e)
{
//FROM
if (!bGameStarted)
return;
CurrentPiece = null;
ReplacedPiece = null;
DestinationTile = null;
var img = ((PictureBox)sender).Image;
if (img == null) return;
CurrentPiece = (GamePiece)sender;
if ((CurrentPiece.PieceState == GridEntry.BLACKPAWN && _GameTurn.GameState == GameState.BLACKTURN
|| CurrentPiece.PieceState == GridEntry.WHITEPAWN && _GameTurn.GameState == GameState.WHITETURN
|| CurrentPiece.PieceState == GridEntry.BLACKKING && _GameTurn.GameState == GameState.BLACKTURN
|| CurrentPiece.PieceState == GridEntry.WHITEKING && _GameTurn.GameState == GameState.WHITETURN) == false)
return;
if (DoDragDrop(img, DragDropEffects.Move) == DragDropEffects.Move)
{
var currentMover = _GameTurn.GameState;
_GameTurn.GameState = GameState.INMOVE;
if (IsLegalMove(CurrentPiece, ReplacedPiece, DestinationTile) == false)
{
_GameTurn.GameState = currentMover;
return;
}
if (DestinationTile != null && ReplacedPiece == null && CurrentPiece != null)
{
MovePiece(CurrentPiece, DestinationTile.BoardLocation, currentMover);
return;
}
MessageBox.Show("Shouldn't Be here", "Mouse Down", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
//Events
private void gridCell_DragEnter(object sender, DragEventArgs e)
{
DestinationTile = (TilePiece)sender;
if (e.Data.GetDataPresent(DataFormats.Bitmap))
e.Effect = DragDropEffects.Move;
}
private bool IsCaptureMove(GamePiece currentPiece, TilePiece destinationTile)
{
int row = currentPiece.BoardLocation.Row - destinationTile.BoardLocation.Row;
int column = currentPiece.BoardLocation.Column - destinationTile.BoardLocation.Column;
if (Math.Abs(row) > 2 || Math.Abs(column) > 2)
return false;
bool IsCapture = false;
BoardLocation captureLoc = new BoardLocation();
if (currentPiece.PieceState == GridEntry.WHITEPAWN)
{
var land = new BoardLocation { Row = currentPiece.BoardLocation.Row + 2, Column = currentPiece.BoardLocation.Column - 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row + 1, currentPiece.BoardLocation.Column - 1].ToString());
IsCapture = cellState == GridEntry.BLACKPAWN || cellState == GridEntry.BLACKKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row + 1, Column = currentPiece.BoardLocation.Column - 1 };
}
land = new BoardLocation { Row = currentPiece.BoardLocation.Row + 2, Column = currentPiece.BoardLocation.Column + 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row + 1, currentPiece.BoardLocation.Column + 1].ToString());
IsCapture = cellState == GridEntry.BLACKPAWN || cellState == GridEntry.BLACKKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row + 1, Column = currentPiece.BoardLocation.Column + 1 };
}
}
else if (currentPiece.PieceState == GridEntry.BLACKPAWN)
{
var land = new BoardLocation { Row = currentPiece.BoardLocation.Row - 2, Column = currentPiece.BoardLocation.Column - 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row - 1, currentPiece.BoardLocation.Column - 1].ToString());
IsCapture = cellState == GridEntry.WHITEPAWN || cellState == GridEntry.WHITEKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row - 1, Column = currentPiece.BoardLocation.Column - 1 };
}
land = new BoardLocation { Row = currentPiece.BoardLocation.Row - 2, Column = currentPiece.BoardLocation.Column + 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row - 1, currentPiece.BoardLocation.Column + 1].ToString());
IsCapture = cellState == GridEntry.WHITEPAWN || cellState == GridEntry.WHITEKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row - 1, Column = currentPiece.BoardLocation.Column + 1 };
}
}
else if (currentPiece.IsPromoted)
{
if (currentPiece.PieceState == GridEntry.WHITEKING)
{
var land = new BoardLocation { Row = currentPiece.BoardLocation.Row - 2, Column = currentPiece.BoardLocation.Column - 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row - 1, currentPiece.BoardLocation.Column - 1].ToString());
IsCapture = cellState == GridEntry.BLACKPAWN || cellState == GridEntry.BLACKKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row - 1, Column = currentPiece.BoardLocation.Column - 1 };
}
land = new BoardLocation { Row = currentPiece.BoardLocation.Row - 2, Column = currentPiece.BoardLocation.Column + 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row - 1, currentPiece.BoardLocation.Column + 1].ToString());
IsCapture = cellState == GridEntry.BLACKPAWN || cellState == GridEntry.BLACKKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row - 1, Column = currentPiece.BoardLocation.Column + 1 };
}
land = new BoardLocation { Row = currentPiece.BoardLocation.Row + 2, Column = currentPiece.BoardLocation.Column + 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row + 1, currentPiece.BoardLocation.Column + 1].ToString());
IsCapture = cellState == GridEntry.BLACKPAWN || cellState == GridEntry.BLACKKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row + 1, Column = currentPiece.BoardLocation.Column + 1 };
}
land = new BoardLocation { Row = currentPiece.BoardLocation.Row + 2, Column = currentPiece.BoardLocation.Column - 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row + 1, currentPiece.BoardLocation.Column - 1].ToString());
IsCapture = cellState == GridEntry.BLACKPAWN || cellState == GridEntry.BLACKKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row + 1, Column = currentPiece.BoardLocation.Column - 1 };
}
}
else if (currentPiece.PieceState == GridEntry.BLACKKING)
{
var land = new BoardLocation { Row = currentPiece.BoardLocation.Row - 2, Column = currentPiece.BoardLocation.Column - 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row - 1, currentPiece.BoardLocation.Column - 1].ToString());
IsCapture = cellState == GridEntry.WHITEPAWN || cellState == GridEntry.WHITEKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row - 1, Column = currentPiece.BoardLocation.Column - 1 };
}
land = new BoardLocation { Row = currentPiece.BoardLocation.Row - 2, Column = currentPiece.BoardLocation.Column + 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row - 1, currentPiece.BoardLocation.Column + 1].ToString());
IsCapture = cellState == GridEntry.WHITEPAWN || cellState == GridEntry.WHITEKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row - 1, Column = currentPiece.BoardLocation.Column + 1 };
}
land = new BoardLocation { Row = currentPiece.BoardLocation.Row + 2, Column = currentPiece.BoardLocation.Column + 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row + 1, currentPiece.BoardLocation.Column + 1].ToString());
IsCapture = cellState == GridEntry.WHITEPAWN || cellState == GridEntry.WHITEKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row + 1, Column = currentPiece.BoardLocation.Column + 1 };
}
land = new BoardLocation { Row = currentPiece.BoardLocation.Row + 2, Column = currentPiece.BoardLocation.Column - 2 };
if (destinationTile.BoardLocation.Row == land.Row && destinationTile.BoardLocation.Column == land.Column)
{
GridEntry cellState = (GridEntry)Enum.Parse(typeof(GridEntry), _GameTurn.BOARDARRAY[currentPiece.BoardLocation.Row + 1, currentPiece.BoardLocation.Column - 1].ToString());
IsCapture = cellState == GridEntry.WHITEPAWN || cellState == GridEntry.WHITEKING;
captureLoc = new BoardLocation() { Row = currentPiece.BoardLocation.Row + 1, Column = currentPiece.BoardLocation.Column - 1 };
}
}
}
if (IsCapture)
{
this.Controls.Remove(FindPiece(captureLoc) as Control);
_GameTurn.BOARDARRAY[captureLoc.Row, captureLoc.Column] = (int)GridEntry.EMPTY;
}
return IsCapture;
}
//Methods
private void InitBoard()
{
int iInd = 0;
int iIndex = 64;
int iWhite = 1;
int iBlack = 1;
for (int row = 0; row < BOARDSIZE; row++)
{
for (int col = 0; col < BOARDSIZE; col++)
{
TilePiece gridCell = new TilePiece(TILESIZE);
gridCell.MouseDown += gameCell_MouseDown;
gridCell.BoardLocation = new BoardLocation { Row = row, Column = col };
gridCell.Location = new Point(LEFTMARGIN + TILESIZE * col, TOPMARGIN + TILESIZE * row);
//mBox.Text += (TOPMARGIN + TILESIZE * row).ToString() + ", " + (5 + TILESIZE * col) + Environment.NewLine;
gridCell.BackColor = (row % 2 == 0 && col % 2 == 0) || (row % 2 == 1 && col % 2 == 1) ? Color.White : Color.Black;
gridCell.DragDrop += gridCell_DragDrop;
gridCell.DragEnter += gridCell_DragEnter;
this.Controls.Add(gridCell);
this.Controls.SetChildIndex(gridCell, ++iInd);
if (row > 4 && gridCell.BackColor == Color.Black)
{
_GameTurn.BOARDARRAY[row, col] = (int)GridEntry.BLACKPAWN;
GamePiece piece = new GamePiece() { BoardLocation = new BoardLocation { Row = row, Column = col } };
piece.MouseDown += piece_MouseDown;
piece.DragEnter += piece_DragEnter;
piece.DragDrop += piece_DragDrop;
piece.PieceState = GridEntry.BLACKPAWN;
piece.Name = "BLACKPIECE_" + iWhite++;
piece.Image = GetImage("Checkers.Assets.BlackPiece.png");
piece.Location = new Point((LEFTMARGIN + TILESIZE * col) + 10, (TOPMARGIN + TILESIZE * row) + 10);
this.Controls.Add(piece);
this.Controls.SetChildIndex(piece, ++iIndex);
piece.BringToFront();
}
else if (row < 3 && gridCell.BackColor == Color.Black)
{
_GameTurn.BOARDARRAY[row, col] = (int)GridEntry.WHITEPAWN;
GamePiece piece = new GamePiece() { BoardLocation = new BoardLocation { Row = row, Column = col } };
piece.MouseDown += piece_MouseDown;
piece.DragEnter += piece_DragEnter;
piece.DragDrop += piece_DragDrop;
piece.PieceState = GridEntry.WHITEPAWN;
piece.Name = "WHITEPIECE_" + iBlack++;
piece.Image = GetImage("Checkers.Assets.WhitePiece.png");
piece.Location = new Point((LEFTMARGIN + TILESIZE * col) + 10, (TOPMARGIN + TILESIZE * row) + 10);
this.Controls.Add(piece);
this.Controls.SetChildIndex(piece, ++iIndex);
piece.BringToFront();
}
else
{
if (gridCell.BackColor == Color.Black)
{
_GameTurn.BOARDARRAY[row, col] = (int)GridEntry.EMPTY;
}
else
{
_GameTurn.BOARDARRAY[row, col] = (int)GridEntry.NULL;
}
}
}
}
}
private bool IsLegalMove(GamePiece currentPiece, GamePiece replacedPiece, TilePiece tileToMove)
{
/*Black pieces can only move down unless promoted, and
*
*
*Pieces can only be on the black tiles
*Can't Land on any piece...
*
*/
bool IsLegal = false;
if (tileToMove == null) return IsLegal;
if (tileToMove.BackColor == Color.White)
return false;
if (ReplacedPiece != null && CurrentPiece != ReplacedPiece)
{
return false;
}
bool IsCapture = IsCaptureMove(currentPiece, DestinationTile);
if (DestinationTile != null && ReplacedPiece == null && CurrentPiece != null)
{
if (currentPiece.PieceState == GridEntry.WHITEPAWN)
{
if ((currentPiece.BoardLocation.Row + 1 == DestinationTile.BoardLocation.Row
&& ((currentPiece.BoardLocation.Column == DestinationTile.BoardLocation.Column + 1
|| currentPiece.BoardLocation.Column == DestinationTile.BoardLocation.Column - 1)
&& DestinationTile.BoardLocation.Column >= 0
&& DestinationTile.BoardLocation.Column < BOARDSIZE)) || IsCapture)
{
IsLegal = true;
}
}
else if (currentPiece.PieceState == GridEntry.BLACKPAWN)
{
if (currentPiece.BoardLocation.Row - 1 == DestinationTile.BoardLocation.Row
&& ((currentPiece.BoardLocation.Column == DestinationTile.BoardLocation.Column + 1
|| currentPiece.BoardLocation.Column == DestinationTile.BoardLocation.Column - 1)
&& DestinationTile.BoardLocation.Column >= 0
&& DestinationTile.BoardLocation.Column < BOARDSIZE) || IsCapture)
{
IsLegal = true;
}
}
else if (currentPiece.IsPromoted)
{
if ((Math.Abs(currentPiece.BoardLocation.Row - DestinationTile.BoardLocation.Row) == 1
&& Math.Abs(currentPiece.BoardLocation.Column - DestinationTile.BoardLocation.Column) == 1) || IsCapture)
{
IsLegal = true;
}
}
}
return IsLegal;
}