hg/html~demo: chess/src/main/java/org/apidesign/html/demo/chess/BoardModel.java@6bb4070d2c20

     1 /**

     2  * The MIT License (MIT)

     3  *

     4  * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

     5  *

     6  * Permission is hereby granted, free of charge, to any person obtaining a copy

     7  * of this software and associated documentation files (the "Software"), to deal

     8  * in the Software without restriction, including without limitation the rights

     9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

    10  * copies of the Software, and to permit persons to whom the Software is

    11  * furnished to do so, subject to the following conditions:

    12  *

    13  * The above copyright notice and this permission notice shall be included in

    14  * all copies or substantial portions of the Software.

    15  *

    16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

    17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

    18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

    19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

    20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

    21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

    22  * THE SOFTWARE.

    23  */

    24 package org.apidesign.html.demo.chess;

    26 import java.util.Arrays;

    27 import java.util.Collections;

    28 import java.util.List;

    29 import java.util.Timer;

    30 import java.util.TimerTask;

    31 import net.java.html.json.ComputedProperty;

    32 import net.java.html.json.Function;

    33 import net.java.html.json.Model;

    34 import net.java.html.json.ModelOperation;

    35 import net.java.html.json.OnPropertyChange;

    36 import net.java.html.json.Property;

    37 import net.java.html.sound.AudioClip;

    39 @Model(className="Board", properties={

    40     @Property(name = "player", type = String.class),

    41     @Property(name = "gameId", type = String.class),

    42     @Property(name = "whitePlayer", type = String.class),

    43     @Property(name = "blackPlayer", type = String.class),

    44     @Property(name = "alertMessage", type = String.class),

    45     @Property(name = "status", type = String.class),

    46     @Property(name = "rows", type = Row.class, array = true),

    47     @Property(name = "turn", type = Color.class),

    48     @Property(name = "moves", type = Move.class, array = true),

    49     @Property(name = "pendingMove", type = Move.class),

    50     @Property(name = "active", type = boolean.class),

    51 })

    52 public class BoardModel {

    53     @ComputedProperty static String title(String status, String gameId) {

    54         String t = status != null ? status : gameId;

    55         if (t != null && t.length() > 10) {

    56             return t.substring(0, 10);

    57         }

    58         return t;

    59     }

    61     @ModelOperation static void updateSummary(Board b, String summary) {

    62         if (summary != null) {

    63             b.setStatus(summary);

    64         }

    65     }

    67     @ComputedProperty static boolean myTurn(String player, String whitePlayer, String blackPlayer, Color turn) {

    68         if (turn != null && player != null) switch (turn) {

    69             case B: return player.equals(blackPlayer);

    70             case W: return player.equals(whitePlayer);

    71         }

    72         return false;

    73     }

    75     @ComputedProperty static boolean justObserving(String player) {

    76         return player == null;

    77     }

    79     private static final AudioClip MOVE = AudioClip.create("sounds/move.mp3");

    80     @OnPropertyChange("moves") static void playMove() {

    81         MOVE.play();

    82     }

    84     private static final AudioClip CHECK = AudioClip.create("sounds/check.mp3");

    85     private static final AudioClip CHECKMATE = AudioClip.create("sounds/checkmate.mp3");

    87     @Function static void selected(Board b, Square data) {

    88         if (!b.isMyTurn()) {

    89             b.setAlertMessage("Not your turn!");

    90             return;

    91         }

    93         Square previoslySelected = findSelectedSquare(b);

    94         if (previoslySelected == null) {

    95             if (data.getPiece() != null && data.getPieceColor() == b.getTurn()) {

    96                 data.setSelected(true);

    97                 Rules.computeAccessible(b, data);

    98             }

    99         } else {

   100             if (previoslySelected == data) {

   101                 data.setSelected(false);

   102                 Rules.computeAccessible(b, null);

   103                 return;

   104             }

   105             if (data.getPiece() != null && data.getPieceColor() == previoslySelected.getPieceColor()) {

   106                 previoslySelected.setSelected(false);

   107                 data.setSelected(true);

   108                 Rules.computeAccessible(b, data);

   109                 return;

   110             }

   111             if (data.isAccessible()) {

   112                 previoslySelected.setSelected(false);

   114                 Move newMove = new Move();

   115                 newMove.setFrom(previoslySelected.getPosition());

   116                 newMove.setTo(data.getPosition());

   117                 newMove.setRound(b.getMoves().size() / 2 + 1);

   118                 newMove.setPiece(previoslySelected.getPiece());

   119                 newMove.setTurn(previoslySelected.getPieceColor());

   120                 newMove.setTakes(data.getPiece() != null);

   121                 b.getMoves().add(newMove);

   122                 b.setPendingMove(newMove);

   124                 data.setPending(true);

   125                 data.setPieceColor(previoslySelected.getPieceColor());

   126                 data.setPiece(previoslySelected.getPiece());

   127                 b.setTurn(null);

   128                 previoslySelected.setPiece(null);

   129                 previoslySelected.setPieceColor(null);

   130                 Rules.computeAccessible(b, null);

   131             }

   132         }

   133     }

   135     static class NextMove extends TimerTask {

   136         private static final Timer T = new Timer("Animate moves");

   137         private final Board b;

   138         private final Move m;

   140         public NextMove(Board b, Move m) {

   141             this.b = b;

   142             this.m = m;

   143             T.schedule(this, 1000);

   144         }

   147         @Override

   148         public void run() {

   149             b.showPosition(m);

   150         }

   151     }

   153     @ModelOperation @Function static void showPosition(Board b, Move data) {

   154         Rules.initBoard(b);

   155         boolean found = false;

   156         for (Move m : b.getMoves()) {

   157             if (found) {

   158                 b.setTurn(null);

   159                 new NextMove(b, m);

   160                 return;

   161             }

   162             Square from = findSquare(b, (char)m.getFrom().getX(), m.getFrom().getY());

   163             Square to = findSquare(b, (char)m.getTo().getX(), m.getTo().getY());

   164             to.setPiece(from.getPiece());

   165             to.setPieceColor(from.getPieceColor());

   166             from.setPiece(null);

   167             from.setPieceColor(null);

   168             if (m == data) {

   169                 found = true;

   170             }

   171         }

   172         b.setTurn(b.getMoves().size() % 2 == 0 ? Color.W : Color.B);

   173     }

   177     @Function static void rotateBoard(Board b) {

   178         Collections.reverse(b.getRows());

   179         for (Row r : b.getRows()) {

   180             Collections.reverse(r.getColumns());

   181         }

   182         Square sq = findSelectedSquare(b);

   183         if (sq != null) {

   184             sq.setSelected(false);

   185             Rules.computeAccessible(b, null);

   186         }

   187     }

   189     @ComputedProperty static boolean whiteTurn(Color turn) {

   190         return turn == Color.W;

   191     }

   193     @ComputedProperty static boolean blackTurn(Color turn) {

   194         return turn == Color.B;

   195     }

   197     @ComputedProperty static List<String> columnNames(List<Row> rows) {

   198         boolean whiteDown = rows.isEmpty() || rows.get(0).getY() == 8;

   199         String[] arr = new String[8];

   200         for (int i = 0; i < 8; i++) {

   201             String s;

   202             if (whiteDown) {

   203                 s = "" + (char)('A' + i);

   204             } else {

   205                 s = "" + (char)('H' - i);

   206             }

   207             arr[i] = s;

   208         }

   209         return Arrays.asList(arr);

   210     }

   212     static Square findSquare(Board b, char column, int row) {

   213         for (Row r : b.getRows()) {

   214             for (Square square : r.getColumns()) {

   215                 if (square.getPosition().getX() == column && square.getPosition().getY() == row) {

   216                     return square;

   217                 }

   218             }

   219         }

   220         return null;

   221     }

   223     private static Square findSquare(Board b, Position to) {

   224         return findSquare(b, (char)to.getX(), to.getY());

   225     }

   227     static Square findSelectedSquare(Board b) {

   228         for (Row row : b.getRows()) {

   229             for (Square square : row.getColumns()) {

   230                 if (square.isSelected()) {

   231                     return square;

   232                 }

   233             }

   234         }

   235         return null;

   236     }

   238     static void moveResponse(

   239         final Board b, final String errMsg,

   240         final List<String> whites, final List<String> blacks,

   241         final Color turn, Object alert

   242     ) {

   243         if (errMsg != null) {

   244             b.getMoves().remove(b.getPendingMove());

   245             b.setPendingMove(null);

   246             b.setAlertMessage(errMsg);

   247         } else {

   248             b.setTurn(turn);

   249             b.setAlertMessage(null);

   250         }

   251         Rules.initBoard(b, whites, blacks, turn);

   252     }

   254     static void moveUpdate(

   255         final Board b, final Move move,

   256         final List<String> whites, final List<String> blacks,

   257         final Color turn, Object alert

   258     ) {

   259         final Square from = BoardModel.findSquare(b, move.getFrom());

   260         final Square to = BoardModel.findSquare(b, move.getTo());

   261         move.setPiece(from.getPiece());

   262         move.setTurn(from.getPieceColor());

   263         if (to.getPiece() != null) {

   264             move.setTakes(true);

   265         }

   266         move.setRound(b.getMoves().size() / 2 + 1);

   267         b.getMoves().add(move);

   268         Rules.initBoard(b, whites, blacks, turn);

   269     }

   271     @Model(className="Row", properties = {

   272         @Property(name = "columns", type = Square.class, array = true)

   273     })

   274     static class RowsImpl {

   275         @ComputedProperty static int y(List<Square> columns) {

   276             return columns.isEmpty() ? 0 : columns.get(0).getY();

   277         }

   278     }

   280     enum PieceType {

   281         PAWN(5), ROCK(2), KNIGHT(4), BISHOP(3), QUEEN(1), KING(0);

   283         final int entityIndex;

   285         PieceType(int ei) {

   286             this.entityIndex = ei;

   287         }

   289         static PieceType fromNotation(char notation) {

   290             switch (notation) {

   291                 case 'R': return ROCK;

   292                 case 'N': return KNIGHT;

   293                 case 'B': return BISHOP;

   294                 case 'Q': return QUEEN;

   295                 case 'K': return KING;

   296                 case 'P': return PAWN;

   297             }

   298             throw new IllegalStateException("Unexpected: " + notation);

   299         }

   301         String computeEntity(Color color) {

   302             if (color == null) {

   303                 color = Color.W;

   304             }

   305             int base;

   306             switch (color) {

   307                 case W: base = 12; break;

   308                 case B: base = 18; break;

   309                 default:

   310                     throw new AssertionError();

   311             }

   312             return "&#98" + String.valueOf(base + entityIndex) + ";";

   313         }

   314     }

   316     @Model(className="Position", properties = {

   317         @Property(name = "x", type = char.class),

   318         @Property(name = "y", type = int.class),

   319     })

   320     static class PositionImpl {

   321         @ComputedProperty static String location(int x, int y) {

   322             return "" + (char)(x - 'A' + 'a') + y;

   323         }

   324     }

   326     @Model(className="Square", properties = {

   327         @Property(name = "position", type = Position.class),

   328         @Property(name = "color", type = Color.class),

   329         @Property(name = "piece", type = PieceType.class),

   330         @Property(name = "pieceColor", type = Color.class),

   331         @Property(name = "selected", type = boolean.class),

   332         @Property(name = "accessible", type = boolean.class),

   333         @Property(name = "pending", type = boolean.class),

   334     })

   335     static class SquareModel {

   336         @ComputedProperty static String pieceEntity(

   337             PieceType piece, Color pieceColor

   338         ) {

   339             if (piece == null) {

   340                 return "";

   341             }

   342             return piece.computeEntity(pieceColor);

   343         }

   345         @ComputedProperty static String squareColor(

   346             Color color, boolean selected, boolean accessible, boolean pending

   347         ) {

   348             if (selected) {

   349                 return "selected";

   350             }

   351             if (accessible) {

   352                 return "accessible";

   353             }

   354             if (pending) {

   355                 return "pending";

   356             }

   358             if (color == null) {

   359                 return "";

   360             } else {

   361                 if (color == Color.W) {

   362                     return "white";

   363                 } else {

   364                     return "black";

   365                 }

   366             }

   367         }

   369         @ComputedProperty static char x(Position position) {

   370             return position == null ? 'A' : position.getX();

   371         }

   373         @ComputedProperty static int y(Position position) {

   374             return position == null ? 1 : position.getY();

   375         }

   376     }

   378     @Model(className = "Move", properties = {

   379         @Property(name = "round", type = int.class),

   380         @Property(name = "turn", type = Color.class),

   381         @Property(name = "piece", type = PieceType.class),

   382         @Property(name = "from", type = Position.class),

   383         @Property(name = "to", type = Position.class),

   384         @Property(name = "promoted", type = PieceType.class),

   385         @Property(name = "takes", type = boolean.class),

   386         @Property(name = "check", type = boolean.class),

   387     })

   388     static class MoveImpl {

   389         @ComputedProperty static boolean whiteMove(Color turn) {

   390             return turn == Color.W;

   391         }

   393         @ComputedProperty static String html(

   394             Position from, Position to, boolean takes, PieceType piece, Color turn

   395         ) {

   396             if (from == null || to == null) {

   397                 return "";

   398             }

   399             StringBuilder sb = new StringBuilder();

   400             if (piece != null && piece != PieceType.PAWN) {

   401                 sb.append(piece.computeEntity(turn));

   402             }

   404             sb.append(from.getLocation());

   405             if (takes) {

   406                 sb.append("x");

   407             }

   408             sb.append(to.getLocation());

   409             return sb.toString();

   410         }

   412         static Move valueOf(String move) {

   413             move = move.toUpperCase();

   414             Move m = new Move();

   415             {

   416                 Position p = new Position();

   417                 p.setX(move.charAt(0));

   418                 p.setY(move.charAt(1) - '0');

   419                 m.setFrom(p);

   420             }

   421             {

   422                 Position p = new Position();

   423                 p.setX(move.charAt(2));

   424                 p.setY(move.charAt(3) - '0');

   425                 m.setTo(p);

   426             }

   427             return m;

   428         }

   429     }

   430 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Tue, 24 Sep 2013 23:52:32 +0200
branch	chess
changeset 52	6bb4070d2c20
parent 51	3f1866fdb2a1
child 53	bc0094a5f88c
permissions	-rw-r--r--