package chess;

import static java.lang.Integer.signum;
import static java.lang.Math.abs;

public class Rook extends Piece{
    public Rook(Color color, Board board, int row, int col) {
        super(color, board, row, col);
      }
    
      @Override
      public char charRep() {
        return getColor() == Color.white ? 'r' : 'R';
      }
    
      @Override
      public String toString() {
        return "" + getColor() + " rook at (" + getRow() + ", " + getCol() + ")";
      }
    
      @Override
      public boolean canCapture(Piece other) {
        if (getBoard() != other.getBoard() || getColor() == other.getColor())
          return false;
        if (other.getRow() != getRow() &&
            other.getCol() != getCol())
          return false;
        final int dr = signum(other.getRow() - getRow());
        final int dc = signum(other.getCol() - getCol());
        int r = getRow() + dr;
        int c = getCol() + dc;
        while (r != other.getRow() || c != other.getCol()) {
          if (getBoard().pieceAt(r, c) != null) return false;
          r += dr;
          c += dc;
        }
        return true;
      }
}