41 lines
1.1 KiB
Java
41 lines
1.1 KiB
Java
package chess;
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import static java.lang.Integer.signum;
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import static java.lang.Math.abs;
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public class Queen extends Piece {
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public Queen(Color color, Board board, int row, int col) {
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super(color, board, row, col);
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}
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@Override
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public char charRep() {
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return getColor() == Color.white ? 'q' : 'Q';
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}
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@Override
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public String toString() {
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return "" + getColor() + " queen at (" + getRow() + ", " + getCol() + ")";
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}
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@Override
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public boolean canCapture(Piece other) {
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if (getBoard() != other.getBoard() || getColor() == other.getColor())
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return false;
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if (other.getRow() != getRow() &&
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other.getCol() != getCol() &&
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abs(other.getRow() - getRow()) != abs(other.getCol() - getCol()))
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return false;
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final int dr = signum(other.getRow() - getRow());
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final int dc = signum(other.getCol() - getCol());
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int r = getRow() + dr;
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int c = getCol() + dc;
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while (r != other.getRow() || c != other.getCol()) {
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if (getBoard().pieceAt(r, c) != null) return false;
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r += dr;
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c += dc;
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}
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return true;
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}
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}
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