private void DrawAvailableMoves(Coordinate oldMouseCoordinate)
{
Graphics g = CreateGraphics();
this.Refresh();
if (Context.Layout.ContainsKey(oldMouseCoordinate))
{
Piece piece = Context.Layout[oldMouseCoordinate];
List <Coordinate> availableMoves = piece.GetNextLegalMoves(oldMouseCoordinate, Context);
foreach (Coordinate coordinate in availableMoves)
{
g.DrawRectangle(new Pen(Color.Purple, 3), coordinate.X * CellSize, coordinate.Y * CellSize, CellSize, CellSize);
}
}
}
