///////////////////////////////////////
//
#region Private Methods
//
///////////////////////////////////////
// ShowMoves(): given a BasePiece and Position, display available moves
void ShowMoves(BasePiece piece)
{
Debug.Log("PieceManager::ShowMoves()");
// highlight original position
mBoard.HighlightCell(piece.GetCurrentCell().GetBoardPosition(), piece.GetTeamColor(), false);
// highlight available moves
List <Vector2Int> allMovePositions = GetAllMovePositions(piece);
mBoard.HighlightCells(allMovePositions, piece.GetTeamColor(), true);
}
// VerifyKingInCheck(): highlight enemy king position if piece is checking enemy king
void VerifyKingInCheck(BasePiece piece)
{
if (IsChecking(piece))
{
// highlight enemy king
Color teamColor = piece.GetTeamColor();
if (teamColor == Color.white)
{
foreach (BasePiece p in mBlackPieces)
{
if (p is King)
{
Debug.Log("highlight enemy king!");
Vector2Int position = p.GetCurrentCell().GetBoardPosition();
mBoard.HighlightCell(position, p.GetTeamColor(), true);
return;
}
}
}
else
{
foreach (BasePiece p in mWhitePieces)
{
if (p is King)
{
Debug.Log("highlight enemy king!");
Vector2Int position = p.GetCurrentCell().GetBoardPosition();
mBoard.HighlightCell(position, p.GetTeamColor(), true);
return;
}
}
}
}
}
// InquireCellState()
public static CellState InquireCellState(BasePiece inquirerPiece, Cell targetCell)
{
Debug.Log("Cell::InquireCellState: " + targetCell.GetBoardPosition());
if (!targetCell.GetCurrentPiece())
{
return(Cell.CellState.Empty);
}
else
{
Color inquirerTeamColor = inquirerPiece.GetTeamColor();
Color targetTeamColor = targetCell.GetCurrentPiece().GetTeamColor();
if (inquirerTeamColor == targetTeamColor)
{
return(Cell.CellState.Friend);
}
else
{
return(Cell.CellState.Enemy);
}
}
}
// Move(): move is an attempt! only place if target cell state is empty or enemy
void Move(BasePiece piece, Cell targetCell)
{
Cell.CellState targetCellState = Cell.InquireCellState(piece, targetCell);
if (targetCellState == Cell.CellState.Empty)
{
Debug.Log("target cell state is: " + targetCellState);
// Highlight path to target cell
Vector2Int origPosition = piece.GetCurrentCell().GetBoardPosition();
Vector2Int targetPosition = targetCell.GetBoardPosition();
List <Vector2Int> pathPositions = GetPathPositions(origPosition, targetPosition);
Color teamColor = piece.GetTeamColor();
mBoard.HighlightCells(pathPositions, teamColor, false);
// Move to empty cell
Place(piece, targetCell);
if (piece is Pawn)
{
Pawn pawnPiece = (Pawn)piece;
pawnPiece.SetFirstMove(false);
}
// Verify if enemy king in check
VerifyKingInCheck(piece);
GameManager.Instance.NextTurn();
}
else if (targetCellState == Cell.CellState.Friend)
{
Debug.Log("target cell state is: " + targetCellState);
// Return to original cell
Place(piece, piece.GetCurrentCell());
}
else if (targetCellState == Cell.CellState.Enemy)
{
Debug.Log("target cell state is: " + targetCellState);
// Highlight path to target cell
Vector2Int origPosition = piece.GetCurrentCell().GetBoardPosition();
Vector2Int targetPosition = targetCell.GetBoardPosition();
List <Vector2Int> pathPositions = GetPathPositions(origPosition, targetPosition);
Color teamColor = piece.GetTeamColor();
mBoard.HighlightCells(pathPositions, teamColor, false);
// Maybe not a good idea... looks kinda confusing...
// // highlight piece to be captured
// mBoard.HighlightCell(targetPosition, targetCell.GetCurrentPiece().GetTeamColor());
// Capture
Kill(targetCell.GetCurrentPiece());
// Move to empty cell
Place(piece, targetCell);
if (piece is Pawn)
{
Pawn pawnPiece = (Pawn)piece;
pawnPiece.SetFirstMove(false);
}
// Verify if enemy king in check
VerifyKingInCheck(piece);
GameManager.Instance.NextTurn();
}
}