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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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*
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* The contents of this file are subject to the terms of either the GNU
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* General Public License Version 2 only ("GPL") or the Common
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* Development and Distribution License("CDDL") (collectively, the
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* "License"). You may not use this file except in compliance with the
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* License. You can obtain a copy of the License at
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* http://www.netbeans.org/cddl-gplv2.html
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* or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
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* specific language governing permissions and limitations under the
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* License. When distributing the software, include this License Header
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* Notice in each file and include the License file at
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* nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the GPL Version 2 section of the License file that
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* accompanied this code. If applicable, add the following below the
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* License Header, with the fields enclosed by brackets [] replaced by
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* your own identifying information:
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* "Portions Copyrighted [year] [name of copyright owner]"
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*
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* Contributor(s):
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*
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* Portions Copyrighted 2009 Jaroslav Tulach
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*/
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package cz.xelfi.quoridor;
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import cz.xelfi.quoridor.Player.Direction;
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import java.util.Arrays;
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/** Encapsulates one possible move that can be applied to existing {@link Board}
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* by calling its {@link Board#apply} method.
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*
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* @author Jaroslav Tulach <jtulach@netbeans.org>
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*/
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public final class Move extends Object {
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final Direction[] direction;
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final Fence fence;
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private Move(Direction... arr) {
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direction = arr;
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fence = null;
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}
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private Move(Fence f) {
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fence = f;
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direction = null;
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}
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/** Moves the player's figure to north */
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public static final Move NORTH = new Move(Direction.NORTH);
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/** Moves the player's figure to east */
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public static final Move EAST = new Move(Direction.EAST);
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/** Moves the player's figure to south */
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public static final Move SOUTH = new Move(Direction.SOUTH);
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/** Moves the player's figure to west */
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public static final Move WEST = new Move(Direction.WEST);
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/** Places a fence into given position with specified orientation.
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* The faces postions are numbered 1-8 and A-H according to following
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* graph: <pre>
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H G F E D C B A
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| | | | | | | |
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+-----------------------------------+
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| |
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1--| + + + + + + + + |--1
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| |
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2--| + + + + + + + + |--2
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| |
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3--| + + + + + + + + |--3
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| |
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4--| + + + + + + + + |--4
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[E] | | [W]
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5--| + + + + + + + + |--5
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| |
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6--| + + + + + + + + |--6
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| |
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7--| + + + + + + + + |--7
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8--| + + + + + + + + |--8
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+-----------------------------------+
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| | | | | | | |
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H G F E D C B A
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* </pre>
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*
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*
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* @param column x-coordinate of the middle of the fence from 'A' to 'B'
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* @param row y-coordinate of the middle of the fence
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* @param orientation place the fence horizontally or vertically
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* @return the new board
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* @exception IllegalPositionException if the move is not possible
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*/
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public static Move fence(char column, int row, Fence.Orientation orientation) throws IllegalPositionException {
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if (column < 'A' || 'H' < column) {
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throw new IllegalPositionException ("x coordinate has to be from A to H"); // NOI18N
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}
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if (row < 1 || row > 8) {
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throw new IllegalPositionException ("y coordinate has to be from 1 to 8"); // NOI18N
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}
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return new Move(new Fence ((column - 'A') * 2 + 1, row * 2 - 1, orientation));
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}
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/** Moves the player in given directions. After applying
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* the first direction, the pawn has to get on a position
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* that is occupied by other player's pawn.
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*
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* @param where one or two directions saying where
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* @return the new board
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* @exception IllegalPositionException if the move is not possible
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*/
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public static Move jump(Direction first, Direction second) {
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return new Move(first, second);
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}
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/** Converts the value of the move string into valid move, if possible.
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*
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* @param move the string in format used by {@link #toString()}
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* @return the move which's toString() returns the move parameter
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* @throws IllegalPositionException raised in case the parameter does not
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* represent a valid move
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*/
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public static Move valueOf(String move) throws IllegalPositionException {
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switch (move.length()) {
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case 3:
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if (move.startsWith("H")) {
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return Move.fence(move.charAt(1), move.charAt(2) - '0', Fence.Orientation.HORIZONTAL);
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}
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if (move.startsWith("V")) {
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return Move.fence(move.charAt(1), move.charAt(2) - '0', Fence.Orientation.VERTICAL);
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}
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break;
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case 2:
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return Move.jump(Direction.valueOf(move.charAt(0)), Direction.valueOf(move.charAt(1)));
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case 1:
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switch (move.charAt(0)) {
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case 'N': return Move.NORTH;
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case 'S': return Move.SOUTH;
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case 'E': return Move.EAST;
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case 'W': return Move.WEST;
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}
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}
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throw new IllegalPositionException(move);
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}
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@Override
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public String toString() {
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if (fence != null) {
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switch (fence.getOrientation()) {
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case HORIZONTAL: return "H" + fence.getColumn() + fence.getRow();
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case VERTICAL: return "V" + fence.getColumn() + fence.getRow();
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}
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throw new IllegalStateException();
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} else {
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StringBuilder sb = new StringBuilder();
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for (Direction d : direction) {
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sb.append(d.name().charAt(0));
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}
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return sb.toString();
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}
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}
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@Override
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public boolean equals(Object obj) {
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if (obj == null) {
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return false;
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}
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if (getClass() != obj.getClass()) {
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return false;
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}
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final Move other = (Move) obj;
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if (!Arrays.deepEquals(this.direction, other.direction)) {
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return false;
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}
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if (this.fence != other.fence && (this.fence == null || !this.fence.equals(other.fence))) {
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return false;
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}
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return true;
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}
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@Override
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public int hashCode() {
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int hash = 3;
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hash = 47 * hash + Arrays.deepHashCode(this.direction);
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hash = 47 * hash + (this.fence != null ? this.fence.hashCode() : 0);
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return hash;
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}
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}
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