private bool IsPieceCanMove(PieceDirection dir)
{
int dy = 0;
int dx = 0;
if (dir == PieceDirection.DOWN)
{
dy = -1;
}
if (dir == PieceDirection.RIGHT)
{
dx = 1;
}
else if (dir == PieceDirection.LEFT)
{
dx = -1;
}
bool isCan = true;
foreach (Point p in Piece.Points)
{
if (dir == PieceDirection.DOWN)
{
if (p.Y <= 0)
{
return(false);
}
}
else if (dir == PieceDirection.RIGHT)
{
if (p.X >= Board.BoardSizeX - 1)
{
return(false);
}
}
else if (dir == PieceDirection.LEFT)
{
if (p.X <= 0)
{
return(false);
}
}
Tile tileInDirection = Board.GetTile(p.X + dx, p.Y + dy);
if (Piece.IsContainsTile(tileInDirection))
{
continue;
}
if (tileInDirection.IsFull)
{
return(false);
}
}
return(isCan);
}
public static PieceDirection GetNextDirection(this PieceDirection dir)
{
PieceDirection nextDir = dir;
if (nextDir == PieceDirection.Left)
{
nextDir = PieceDirection.Up;
}
else
{
nextDir++;
}
return(nextDir);
}
private void movePiece(PieceDirection dir)
{
int dy = 0;
int dx = 0;
if (dir == PieceDirection.DOWN)
{
dy = -1;
}
if (dir == PieceDirection.RIGHT)
{
dx = 1;
}
else if (dir == PieceDirection.LEFT)
{
dx = -1;
}
if (!IsPieceCanMove(dir))
{
return;
}
// delete piece
foreach (Point p in Piece.Points)
{
Board.GetTile(p.X, p.Y).Color = Color.white;
}
// move one step down
foreach (Point p in Piece.Points)
{
p.X += dx;
p.Y += dy;
}
// draw piece
foreach (Point p in Piece.Points)
{
Board.GetTile(p.X, p.Y).Color = Piece.Color;
}
}
public Piece GetNextPiece(int x, int y, PieceDirection dir)
{
switch (dir)
{
case PieceDirection.Up:
y--;
break;
case PieceDirection.Down:
y++;
break;
case PieceDirection.Left:
x--;
break;
case PieceDirection.Right:
x++;
break;
}
return(GetPiece(x, y));
}
public void AddPiece(PieceColor color, int x, int y, PieceDirection forward)
{
var listToAdd = color == PieceColor.Black ? AlivePlayerOnePieces : AlivePlayerTwoPieces;
listToAdd.Add(new CheckersPiece(x, y, color, forward));
}
private void DrawPiece(Context cr, PieceType Piece, PieceDirection Direction, double x, double y)
{
int idx = (int)Piece;
if (idx < (int)PieceType.FUHYOU || idx > (int)PieceType.OUSHOU)
return;
cr.Save();
cr.Translate(x, y);
if (Direction == PieceDirection.DOWN)
{
cr.Rotate(180 * Math.PI / 180);
cr.Translate(-FIELD_SIZE,-FIELD_SIZE);
}
cr.Scale(FIELD_SIZE/PieceGraphics[idx].Dimensions.Width, FIELD_SIZE/PieceGraphics[idx].Dimensions.Width);
if (idx == (int)PieceType.OUSHOU && Direction == PieceDirection.DOWN)
{
GyokushouGraphic.RenderCairo(cr);
}
else
{
PieceGraphics[idx].RenderCairo(cr);
}
cr.Restore();
}
public void MovePiece(PieceDirection dir)
{
movePiece(dir);
}
