void Update()
{
var mousePos = cam.ScreenToWorldPoint(Input.mousePosition);
if (Input.GetMouseButtonDown(1))
{
isDrawing = boardUI.TryGetSquareUnderMouse(mousePos, out startCoord);
}
if (isDrawing && Input.GetMouseButtonUp(1))
{
Coord endCoord;
if (boardUI.TryGetSquareUnderMouse(mousePos, out endCoord))
{
isDrawing = false;
var col = (Input.GetKey(KeyCode.LeftShift)) ? arrowColB : arrowColA;
CreateArrow(boardUI.PositionFromCoord(startCoord), boardUI.PositionFromCoord(endCoord), col);
}
}
if (Input.GetMouseButtonDown(0))
{
ClearArrows();
}
}
private void HandlePiecePlacement(Vector2 mousePos)
{
Coord targetSquare;
if (boardUI.TryGetSquareUnderMouse(mousePos, out targetSquare))
{
if (targetSquare.Equals(selectedPieceSquare))
{
boardUI.ResetPiecePosition(selectedPieceSquare);
if (currentState == InputState.DraggingPiece)
{
currentState = InputState.PieceSelected;
}
else
{
currentState = InputState.None;
boardUI.DeselectSquare(selectedPieceSquare);
}
}
else
{
var targetIndex =
BoardRepresentation.IndexFromCoord(targetSquare.fileIndex, targetSquare.rankIndex);
if (Piece.IsColour(board.Square[targetIndex], board.ColourToMove) && board.Square[targetIndex] != 0)
{
CancelPieceSelection();
HandlePieceSelection(mousePos);
}
else
{
TryMakeMove(selectedPieceSquare, targetSquare);
}
}
}
else
{
CancelPieceSelection();
}
}