void CheckValid()
{
// Sandbox mode - Game has ended
if (boardInfo.GameEnded)
{
return;
}
// Check if king placed on the forfeit tile
if (WinRules.CheckForfeit((int)type, (int)colour, gameObject, boardInfo))
{
KingForfeit();
return;
}
// If piece dropped off the board
if (transform.localPosition.y <= -0.1f)
{
FixPosition();
return;
}
// Declare the new position of the piece
int newXPosition = -1;
int newZPosition = -1;
RaycastHit hit;
/// <summary>
/// Raycast down to find the tile the player is currently on
/// </summary>
if (Physics.Raycast(transform.position, -transform.up, out hit, 1f, chessboardLayer))
{
GameObject pieceCollided = hit.collider.gameObject;
newXPosition = (int)pieceCollided.name[0] - 65;
newZPosition = (int)Char.GetNumericValue(pieceCollided.transform.parent.gameObject.name[0]) - 1;
}
// Since the peice can go through the board
// It can miss the raycast (backup)
else
{
newXPosition = (int)Math.Round(transform.localPosition.x);
newZPosition = (int)Math.Round(transform.localPosition.z);
}
string newPosition = newXPosition.ToString() + " " + newZPosition.ToString();
// Check if piece can be moved to this position
if (possibleMoves.Contains(newPosition))
{
// If player was under check, check = false
boardInfo.Check = false;
string originalPosition = CurrentXPosition.ToString() + " " + CurrentZPosition.ToString();
// Check if new position has opponent's piece
if (board[newZPosition, newXPosition] != null)
{
// Destroy opponent's piece at new position
GameObject opponentPiece = board[newZPosition, newXPosition];
pieceAction.Eliminate(opponentPiece);
MoveHistory.Instance.Move(true, opponentPiece, gameObject, originalPosition, newPosition);
boardInfo.RemoveFromBoard(opponentPiece);
// Reset fifty move to 0
WinRules.FiftyMoves = 0;
}
// Check if en passant
else if (type == Type.Pawn && CurrentXPosition != newXPosition)
{
// Destroy opponent's pawn
GameObject eliminatedPiece = board[CurrentZPosition, newXPosition];
pieceAction.Eliminate(eliminatedPiece);
MoveHistory.Instance.Move(true, eliminatedPiece, gameObject, originalPosition, newPosition);
board[CurrentZPosition, newXPosition] = null;
// reset fifty move to 0
WinRules.FiftyMoves = 0;
}
else
{
// Reset fifty move to 0 if pawn moved
// Else, +1
if (type == Type.Pawn)
{
WinRules.FiftyMoves = 0;
}
else
{
WinRules.FiftyMoves += 1;
}
MoveHistory.Instance.Move(false, null, gameObject, originalPosition, newPosition);
// Check if king and castling
// xDisplacement (- if moving right, + if moving left)
int xDisplacement = CurrentXPosition - newXPosition;
if (type == Type.King && Math.Abs(xDisplacement) == 2)
{
Vector3 endPosition;
GameObject rook;
int initialRookX;
int newRookX;
// If moved towards right, move rook to the left
if (xDisplacement < 0)
{
initialRookX = 7;
newRookX = 5;
rook = board[newZPosition, initialRookX];
endPosition = new Vector3(newZPosition, 0, newRookX);
}
// If moved towards left, move rook to the right
else
{
initialRookX = 0;
newRookX = 3;
rook = board[newZPosition, initialRookX];
endPosition = new Vector3(newZPosition, 0, newRookX);
}
// Move the rook to new position
pieceAction.ChangePosition(rook, endPosition, (int)colour);
boardInfo.UpdateBoard(initialRookX, newZPosition, newRookX, newZPosition);
}
}
boardInfo.UpdateBoard(CurrentXPosition, CurrentZPosition, newXPosition, newZPosition);
PieceMoves += 1;
if (boardInfo.ghostActive)
{
StartCoroutine(AnimateMovement(transform.localPosition));
}
}
// Not a valid move, still the player's turn
else
{
FixPosition();
return;
}
if (type == Type.Pawn)
{
// Check if in final tile for pawn promotion
if ((colour == Colour.White && newZPosition == 7) || (colour == Colour.Black && newZPosition == 0))
{
StartCoroutine(boardInfo.PromotePawn(GetComponent <PieceInformation>()));
BeenPromoted = true;
}
else
{
ContinueProcess();
}
}
else
{
ContinueProcess();
}
}
