/// <summary>
/// Initializes a new instance of the <see cref="PieceMovedEventArgs"/> class.
/// </summary>
/// <param name="piece">The moved piece.</param>
/// <param name="from">The source position of the piece.</param>
/// <param name="to">The destination position of the piece.</param>
public PieceMovedEventArgs(FriendlyPiece piece, Position from, Position to)
{
Piece = piece;
From = from;
To = to;
}
/// <summary>
/// Processes the left button press when there is no previous selection.
/// </summary>
/// <param name="selectionPosition">The selection position on board.</param>
/// <param name="selectedPieceType">The selected piece type (null if the selected field empty)/</param>
private void ProcessLeftButtonPressWithoutPreviousSelection(Position selectionPosition, FriendlyPiece selectedPieceType)
{
OnFieldSelection?.Invoke(this, new FieldSelectedEventArgs(selectionPosition, selectedPieceType));
}
/// <summary>
/// Initializes a new instance of the <see cref="FieldSelectedEventArgs"/> class.
/// </summary>
/// <param name="position">The selected field position.</param>
/// <param name="piece">The selected piece (null if the selected field is empty)</param>
public FieldSelectedEventArgs(Position position, FriendlyPiece piece)
{
Position = position;
Piece = piece;
}
/// <summary>
/// Processes the left button press when there is another selection present.
/// </summary>
/// <param name="previousSelection">The previous selection.</param>
/// <param name="selectedPosition">The selection position on board.</param>
/// <param name="selectedPiece">The selected piece (null if the selected field is empty).</param>
private void ProcessLeftButtonPressWithPreviousSelection(Selection previousSelection, Position selectedPosition, FriendlyPiece selectedPiece)
{
var previousSelectedPiece = FriendlyBoard.GetPiece(previousSelection.Position);
if (previousSelectedPiece == null)
{
OnFieldSelection?.Invoke(this, new FieldSelectedEventArgs(selectedPosition, selectedPiece));
}
else if (selectedPiece == null || selectedPiece.Color != previousSelectedPiece.Color)
{
var from = previousSelection.Position;
var to = selectedPosition;
OnPieceMove?.Invoke(this, new PieceMovedEventArgs(previousSelectedPiece, from, to));
_selectionsManager.RemoveAllSelections();
}
}
