74 lines
1.9 KiB
Java
74 lines
1.9 KiB
Java
package dev.kske.chess.board;
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import java.util.Objects;
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/**
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* Project: <strong>Chess</strong><br>
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* File: <strong>Move.java</strong><br>
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* Created: <strong>02.07.2019</strong><br>
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* Author: <strong>Kai S. K. Engelbart</strong>
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*/
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public class Move {
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public final Position pos, dest;
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public final int xDist, yDist, xSign, ySign;
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public Type type;
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public Move(Position pos, Position dest, Type type) {
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this.pos = pos;
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this.dest = dest;
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this.type = type;
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xDist = Math.abs(dest.x - pos.x);
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yDist = Math.abs(dest.y - pos.y);
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xSign = (int) Math.signum(dest.x - pos.x);
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ySign = (int) Math.signum(dest.y - pos.y);
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}
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public Move(Position pos, Position dest) {
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this(pos, dest, Type.NORMAL);
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}
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public Move(int xPos, int yPos, int xDest, int yDest) {
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this(new Position(xPos, yPos), new Position(xDest, yDest));
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}
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public static Move fromLAN(String move) {
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return new Move(Position.fromLAN(move.substring(0, 2)),
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Position.fromLAN(move.substring(2)));
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}
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public String toLAN() {
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return pos.toLAN() + dest.toLAN();
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}
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public boolean isHorizontal() { return yDist == 0; }
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public boolean isVertical() { return xDist == 0; }
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public boolean isDiagonal() { return xDist == yDist; }
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@Override
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public String toString() {
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return String.format("%s -> %s", pos, dest);
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}
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@Override
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public int hashCode() {
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return Objects.hash(dest, pos, type, xDist, xSign, yDist, ySign);
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj) return true;
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if (obj == null) return false;
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if (getClass() != obj.getClass()) return false;
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Move other = (Move) obj;
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return Objects.equals(dest, other.dest) && Objects.equals(pos, other.pos) && type == other.type
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&& xDist == other.xDist && xSign == other.xSign && yDist == other.yDist && ySign == other.ySign;
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}
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public static enum Type {
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NORMAL, PAWN_PROMOTION, CASTLING, EN_PASSANT, UNKNOWN
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}
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}
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