Bishop.java

/**
 * Bishop.java
 *
 * @author Deep Patel
 *
 *         REMARKS: This is a class which stores information about the bishop
 *         piece and how it moves, which is diagonally and cannot jump over
 *         pieces
 */

public class Bishop extends Piece {
    //Constructor
    public Bishop(boolean myPiece) {
        super(myPiece);
    }

    /**
   * This method is used to check if the move made by the bishop piece is a valid
   * move for the piece 
   *
   * Parameters:
   * Board board - The method take in the current state of the board to validate the move
   * Move move - The method takes in the move being made
   *
   * Returns a boolean to indicate whether the move was valid
   */
    public boolean isValidMove(Board board, Move move) {
        // Bishop must move diagonally
        if (Math.abs(move.getToRow() - move.getFromRow()) != Math.abs(move.getToCol() - move.getFromCol())) {
            return false; 
        }

        //Row direction where bishop is moving
        int rowDir;
        int difference = move.getToRow() - move.getFromRow();
        if (difference > 0) {
            rowDir = 1;
        } else {
            rowDir = -1;
        }
        
        //Column direction where bishop is moving
        int colDir;
        int diff = move.getToCol() - move.getFromCol();
        if (diff > 0) {
            colDir = 1;
        } else {
            colDir = -1;
        }
        
        for (int i = 1; i < Math.abs(move.getToRow() - move.getFromRow()); i++) {
            if (board.getSymbol(move.getFromRow() - 1 + i * rowDir, move.getFromCol() - 1 + i * colDir) != ' ') {
                return false; // Path must be clear for bishop to move
            }
        }
        return true;
    }
}