jaroslav@49
|
1 |
/**
|
jaroslav@49
|
2 |
* The MIT License (MIT)
|
jaroslav@49
|
3 |
*
|
jaroslav@49
|
4 |
* Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
|
jaroslav@49
|
5 |
*
|
jaroslav@49
|
6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
jaroslav@49
|
7 |
* of this software and associated documentation files (the "Software"), to deal
|
jaroslav@49
|
8 |
* in the Software without restriction, including without limitation the rights
|
jaroslav@49
|
9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
jaroslav@49
|
10 |
* copies of the Software, and to permit persons to whom the Software is
|
jaroslav@49
|
11 |
* furnished to do so, subject to the following conditions:
|
jaroslav@49
|
12 |
*
|
jaroslav@49
|
13 |
* The above copyright notice and this permission notice shall be included in
|
jaroslav@49
|
14 |
* all copies or substantial portions of the Software.
|
jaroslav@49
|
15 |
*
|
jaroslav@49
|
16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
jaroslav@49
|
17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
jaroslav@49
|
18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
jaroslav@49
|
19 |
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
jaroslav@49
|
20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
jaroslav@49
|
21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
jaroslav@49
|
22 |
* THE SOFTWARE.
|
jaroslav@49
|
23 |
*/
|
jaroslav@51
|
24 |
package org.apidesign.html.demo.chess;
|
jaroslav@49
|
25 |
|
jaroslav@49
|
26 |
import java.util.ArrayList;
|
jaroslav@49
|
27 |
import java.util.List;
|
jaroslav@49
|
28 |
|
jaroslav@49
|
29 |
/** Common chess rules.
|
jaroslav@49
|
30 |
*
|
jaroslav@49
|
31 |
* @author Jaroslav Tulach <jtulach@netbeans.org>
|
jaroslav@49
|
32 |
*/
|
jaroslav@49
|
33 |
class Rules {
|
jaroslav@49
|
34 |
static void computeAccessible(Board b, Square s) {
|
jaroslav@49
|
35 |
for (Row r : b.getRows()) {
|
jaroslav@49
|
36 |
for (Square ts : r.getColumns()) {
|
jaroslav@49
|
37 |
ts.setAccessible(false);
|
jaroslav@49
|
38 |
}
|
jaroslav@49
|
39 |
}
|
jaroslav@49
|
40 |
if (s == null) {
|
jaroslav@49
|
41 |
return;
|
jaroslav@49
|
42 |
}
|
jaroslav@49
|
43 |
|
jaroslav@49
|
44 |
switch (s.getPiece()) {
|
jaroslav@49
|
45 |
case BISHOP:
|
jaroslav@49
|
46 |
moveBishop(b, s);
|
jaroslav@49
|
47 |
break;
|
jaroslav@49
|
48 |
case KING:
|
jaroslav@49
|
49 |
computeAccessible(b, s, 1, 1, 1);
|
jaroslav@49
|
50 |
computeAccessible(b, s, 1, -1, 1);
|
jaroslav@49
|
51 |
computeAccessible(b, s, -1, -1, 1);
|
jaroslav@49
|
52 |
computeAccessible(b, s, -1, 1, 1);
|
jaroslav@49
|
53 |
computeAccessible(b, s, 1, 0, 1);
|
jaroslav@49
|
54 |
computeAccessible(b, s, 0, -1, 1);
|
jaroslav@49
|
55 |
computeAccessible(b, s, 0, 1, 1);
|
jaroslav@49
|
56 |
computeAccessible(b, s, -1, 0, 1);
|
jaroslav@49
|
57 |
checkRochade(b, s);
|
jaroslav@49
|
58 |
break;
|
jaroslav@49
|
59 |
case ROCK:
|
jaroslav@49
|
60 |
moveRock(b, s);
|
jaroslav@49
|
61 |
break;
|
jaroslav@49
|
62 |
case QUEEN:
|
jaroslav@49
|
63 |
moveRock(b, s);
|
jaroslav@49
|
64 |
moveBishop(b, s);
|
jaroslav@49
|
65 |
break;
|
jaroslav@49
|
66 |
case KNIGHT:
|
jaroslav@49
|
67 |
computeAccessible(b, s, 2, 1, 1);
|
jaroslav@49
|
68 |
computeAccessible(b, s, 2, -1, 1);
|
jaroslav@49
|
69 |
computeAccessible(b, s, -2, -1, 1);
|
jaroslav@49
|
70 |
computeAccessible(b, s, -2, 1, 1);
|
jaroslav@49
|
71 |
computeAccessible(b, s, 1, 2, 1);
|
jaroslav@49
|
72 |
computeAccessible(b, s, -1, 2, 1);
|
jaroslav@49
|
73 |
computeAccessible(b, s, -1, -2, 1);
|
jaroslav@49
|
74 |
computeAccessible(b, s, 1, -2, 1);
|
jaroslav@49
|
75 |
break;
|
jaroslav@49
|
76 |
case PAWN:
|
jaroslav@49
|
77 |
pawns(b, s);
|
jaroslav@49
|
78 |
break;
|
jaroslav@49
|
79 |
}
|
jaroslav@49
|
80 |
}
|
jaroslav@49
|
81 |
|
jaroslav@49
|
82 |
private static void moveRock(Board b, Square s) {
|
jaroslav@49
|
83 |
computeAccessible(b, s, 1, 0, 8);
|
jaroslav@49
|
84 |
computeAccessible(b, s, 0, -1, 8);
|
jaroslav@49
|
85 |
computeAccessible(b, s, -1, 0, 8);
|
jaroslav@49
|
86 |
computeAccessible(b, s, 0, 1, 8);
|
jaroslav@49
|
87 |
}
|
jaroslav@49
|
88 |
|
jaroslav@49
|
89 |
private static void moveBishop(Board b, Square s) {
|
jaroslav@49
|
90 |
computeAccessible(b, s, 1, 1, 8);
|
jaroslav@49
|
91 |
computeAccessible(b, s, 1, -1, 8);
|
jaroslav@49
|
92 |
computeAccessible(b, s, -1, -1, 8);
|
jaroslav@49
|
93 |
computeAccessible(b, s, -1, 1, 8);
|
jaroslav@49
|
94 |
}
|
jaroslav@49
|
95 |
|
jaroslav@49
|
96 |
private static void computeAccessible(
|
jaroslav@49
|
97 |
Board b, Square s, int dx, int dy,
|
jaroslav@49
|
98 |
int limit
|
jaroslav@49
|
99 |
) {
|
jaroslav@49
|
100 |
int x = s.getX();
|
jaroslav@49
|
101 |
int y = s.getY();
|
jaroslav@49
|
102 |
|
jaroslav@49
|
103 |
while (limit-- > 0) {
|
jaroslav@49
|
104 |
x += dx;
|
jaroslav@49
|
105 |
y += dy;
|
jaroslav@49
|
106 |
Square next = BoardModel.findSquare(b, (char)x, y);
|
jaroslav@49
|
107 |
if (next == null) {
|
jaroslav@49
|
108 |
break;
|
jaroslav@49
|
109 |
}
|
jaroslav@49
|
110 |
if (next.getPieceColor() == s.getPieceColor()) {
|
jaroslav@49
|
111 |
break;
|
jaroslav@49
|
112 |
}
|
jaroslav@49
|
113 |
next.setAccessible(true);
|
jaroslav@49
|
114 |
if (next.getPieceColor() != null) {
|
jaroslav@49
|
115 |
break;
|
jaroslav@49
|
116 |
}
|
jaroslav@49
|
117 |
}
|
jaroslav@49
|
118 |
}
|
jaroslav@49
|
119 |
|
jaroslav@49
|
120 |
private static void pawns(Board b, Square s) {
|
jaroslav@49
|
121 |
final boolean white = s.getPieceColor() == Color.W;
|
jaroslav@49
|
122 |
int dy = white ? 1 : -1;
|
jaroslav@49
|
123 |
Square step = BoardModel.findSquare(b, (char)s.getX(), s.getY() + dy);
|
jaroslav@49
|
124 |
if (step != null && step.getPiece() == null) {
|
jaroslav@49
|
125 |
step.setAccessible(true);
|
jaroslav@49
|
126 |
if ((s.getY() == 2 && white) || (s.getY() == 7 && !white)) {
|
jaroslav@49
|
127 |
Square nextSTep = BoardModel.findSquare(b, (char)s.getX(), step.getY() + dy);
|
jaroslav@49
|
128 |
if (nextSTep != null && step.getPiece() == null && nextSTep.getPiece() == null) {
|
jaroslav@49
|
129 |
nextSTep.setAccessible(true);
|
jaroslav@49
|
130 |
}
|
jaroslav@49
|
131 |
}
|
jaroslav@49
|
132 |
}
|
jaroslav@49
|
133 |
Color opposite = white ? Color.B : Color.W;
|
jaroslav@49
|
134 |
Square takeLeft = BoardModel.findSquare(b, (char)(s.getX() - 1), s.getY() + dy);
|
jaroslav@49
|
135 |
if (takeLeft != null && takeLeft.getPieceColor() == opposite) {
|
jaroslav@49
|
136 |
takeLeft.setAccessible(true);
|
jaroslav@49
|
137 |
}
|
jaroslav@49
|
138 |
Square takeRight = BoardModel.findSquare(b, (char)(s.getX() + 1), s.getY() + dy);
|
jaroslav@49
|
139 |
if (takeRight != null && takeRight.getPieceColor() == opposite) {
|
jaroslav@49
|
140 |
takeRight.setAccessible(true);
|
jaroslav@49
|
141 |
}
|
jaroslav@49
|
142 |
if ((white && s.getY() == 5) || (!white && s.getY() == 4)) {
|
jaroslav@49
|
143 |
int enPassantFrom = white ? 7 : 2;
|
jaroslav@49
|
144 |
int enPassantTo = white ? 5 : 4;
|
jaroslav@49
|
145 |
if (!b.getMoves().isEmpty()) {
|
jaroslav@49
|
146 |
Move last = b.getMoves().get(b.getMoves().size() - 1);
|
jaroslav@49
|
147 |
if (
|
jaroslav@49
|
148 |
last.getPiece() == BoardModel.PieceType.PAWN &&
|
jaroslav@49
|
149 |
last.getFrom().getY() == enPassantFrom &&
|
jaroslav@49
|
150 |
last.getTo().getY() == enPassantTo
|
jaroslav@49
|
151 |
) {
|
jaroslav@49
|
152 |
if (takeLeft != null && last.getFrom().getX() == s.getX() - 1) {
|
jaroslav@49
|
153 |
takeLeft.setAccessible(true);
|
jaroslav@49
|
154 |
}
|
jaroslav@49
|
155 |
if (takeRight != null && last.getFrom().getX() == s.getX() + 1) {
|
jaroslav@49
|
156 |
takeRight.setAccessible(true);
|
jaroslav@49
|
157 |
}
|
jaroslav@49
|
158 |
}
|
jaroslav@49
|
159 |
}
|
jaroslav@49
|
160 |
}
|
jaroslav@49
|
161 |
}
|
jaroslav@49
|
162 |
|
jaroslav@49
|
163 |
static Board createBoard() {
|
jaroslav@49
|
164 |
Board b = new Board();
|
jaroslav@49
|
165 |
initBoardField(b);
|
jaroslav@49
|
166 |
initBoard(b);
|
jaroslav@49
|
167 |
return b;
|
jaroslav@49
|
168 |
}
|
jaroslav@49
|
169 |
|
jaroslav@49
|
170 |
private static void initBoardField(Board b) {
|
jaroslav@49
|
171 |
List<Row> addRows = new ArrayList<>(8);
|
jaroslav@49
|
172 |
for (int i = 8; i > 0; i--) {
|
jaroslav@49
|
173 |
Square[] arr = new Square[8];
|
jaroslav@49
|
174 |
for (char j = 'A'; j <= 'H'; j++) {
|
jaroslav@49
|
175 |
arr[j - 'A'] = new Square(
|
jaroslav@49
|
176 |
new Position(j, i),
|
jaroslav@49
|
177 |
(i + j) % 2 == 1 ? Color.W : Color.B,
|
jaroslav@49
|
178 |
null, null, // figure
|
jaroslav@49
|
179 |
false, false, false
|
jaroslav@49
|
180 |
);
|
jaroslav@49
|
181 |
}
|
jaroslav@49
|
182 |
addRows.add(new Row(arr));
|
jaroslav@49
|
183 |
}
|
jaroslav@49
|
184 |
b.getRows().addAll(addRows);
|
jaroslav@49
|
185 |
}
|
jaroslav@49
|
186 |
|
jaroslav@49
|
187 |
static void initBoard(Board b) {
|
jaroslav@49
|
188 |
initBoard(b, true);
|
jaroslav@49
|
189 |
}
|
jaroslav@49
|
190 |
private static void initBoard(Board b, boolean init) {
|
jaroslav@49
|
191 |
if (init) {
|
jaroslav@49
|
192 |
b.setTurn(Color.W);
|
jaroslav@49
|
193 |
}
|
jaroslav@49
|
194 |
if (b.getRows().isEmpty()) {
|
jaroslav@49
|
195 |
for (int i = 8; i > 0; i--) {
|
jaroslav@49
|
196 |
Row r = b.getRows().get(8 - i);
|
jaroslav@49
|
197 |
for (char j = 'A'; j <= 'H'; j++) {
|
jaroslav@49
|
198 |
Square s = r.getColumns().get(j - 'A');
|
jaroslav@49
|
199 |
s.setAccessible(false);
|
jaroslav@49
|
200 |
s.setPending(false);
|
jaroslav@49
|
201 |
r.getColumns().set(j - 'A', s);
|
jaroslav@49
|
202 |
initialPosition(s, init);
|
jaroslav@49
|
203 |
}
|
jaroslav@49
|
204 |
}
|
jaroslav@49
|
205 |
} else {
|
jaroslav@49
|
206 |
for (Row r : b.getRows()) {
|
jaroslav@49
|
207 |
for (Square square : r.getColumns()) {
|
jaroslav@49
|
208 |
square.setAccessible(false);
|
jaroslav@49
|
209 |
square.setPending(false);
|
jaroslav@49
|
210 |
square.setPiece(null);
|
jaroslav@49
|
211 |
square.setPieceColor(null);
|
jaroslav@49
|
212 |
square.setSelected(false);
|
jaroslav@49
|
213 |
initialPosition(square, init);
|
jaroslav@49
|
214 |
}
|
jaroslav@49
|
215 |
}
|
jaroslav@49
|
216 |
}
|
jaroslav@49
|
217 |
b.setPendingMove(null);
|
jaroslav@49
|
218 |
}
|
jaroslav@49
|
219 |
|
jaroslav@49
|
220 |
private static void initialPosition(Square s, boolean init) {
|
jaroslav@49
|
221 |
int row = s.getPosition().getY();
|
jaroslav@49
|
222 |
char column = s.getPosition().getX();
|
jaroslav@49
|
223 |
s.setPiece(null);
|
jaroslav@49
|
224 |
s.setPieceColor(null);
|
jaroslav@49
|
225 |
if (init) {
|
jaroslav@49
|
226 |
if (row == 2) {
|
jaroslav@49
|
227 |
s.setPiece(BoardModel.PieceType.PAWN);
|
jaroslav@49
|
228 |
s.setPieceColor(Color.W);
|
jaroslav@49
|
229 |
} else if (row == 7) {
|
jaroslav@49
|
230 |
s.setPiece(BoardModel.PieceType.PAWN);
|
jaroslav@49
|
231 |
s.setPieceColor(Color.B);
|
jaroslav@49
|
232 |
} else if (row == 8 || row == 1) {
|
jaroslav@49
|
233 |
s.setPieceColor(row == 1 ? Color.W : Color.B);
|
jaroslav@49
|
234 |
BoardModel.PieceType t;
|
jaroslav@49
|
235 |
switch (column) {
|
jaroslav@49
|
236 |
case 'A':
|
jaroslav@49
|
237 |
case 'H':
|
jaroslav@49
|
238 |
t = BoardModel.PieceType.ROCK;
|
jaroslav@49
|
239 |
break;
|
jaroslav@49
|
240 |
case 'B':
|
jaroslav@49
|
241 |
case 'G':
|
jaroslav@49
|
242 |
t = BoardModel.PieceType.KNIGHT;
|
jaroslav@49
|
243 |
break;
|
jaroslav@49
|
244 |
case 'C':
|
jaroslav@49
|
245 |
case 'F':
|
jaroslav@49
|
246 |
t = BoardModel.PieceType.BISHOP;
|
jaroslav@49
|
247 |
break;
|
jaroslav@49
|
248 |
case 'D':
|
jaroslav@49
|
249 |
t = BoardModel.PieceType.QUEEN;
|
jaroslav@49
|
250 |
break;
|
jaroslav@49
|
251 |
default:
|
jaroslav@49
|
252 |
t = BoardModel.PieceType.KING;
|
jaroslav@49
|
253 |
break;
|
jaroslav@49
|
254 |
}
|
jaroslav@49
|
255 |
s.setPiece(t);
|
jaroslav@49
|
256 |
}
|
jaroslav@49
|
257 |
}
|
jaroslav@49
|
258 |
}
|
jaroslav@49
|
259 |
|
jaroslav@49
|
260 |
static void initBoard(
|
jaroslav@49
|
261 |
Board board, List<String> whites, List<String> blacks, Color turn
|
jaroslav@49
|
262 |
) {
|
jaroslav@49
|
263 |
initBoard(board, false);
|
jaroslav@49
|
264 |
for (String w : whites) {
|
jaroslav@49
|
265 |
assert w.length() == 3 : "Expecting three letter string: '" + w + "'";
|
jaroslav@49
|
266 |
w = w.toUpperCase();
|
jaroslav@49
|
267 |
char column = w.charAt(1);
|
jaroslav@49
|
268 |
int row = (w.charAt(2) - '0');
|
jaroslav@49
|
269 |
|
jaroslav@49
|
270 |
Square s = BoardModel.findSquare(board, column, row);
|
jaroslav@49
|
271 |
s.setPieceColor(Color.W);
|
jaroslav@49
|
272 |
s.setPiece(BoardModel.PieceType.fromNotation(w.charAt(0)));
|
jaroslav@49
|
273 |
}
|
jaroslav@49
|
274 |
for (String w : blacks) {
|
jaroslav@49
|
275 |
assert w.length() == 3 : "Expecting three letter string: '" + w + "'";
|
jaroslav@49
|
276 |
w = w.toUpperCase();
|
jaroslav@49
|
277 |
char column = w.charAt(1);
|
jaroslav@49
|
278 |
int row = (w.charAt(2) - '0');
|
jaroslav@49
|
279 |
|
jaroslav@49
|
280 |
Square s = BoardModel.findSquare(board, column, row);
|
jaroslav@49
|
281 |
s.setPieceColor(Color.B);
|
jaroslav@49
|
282 |
s.setPiece(BoardModel.PieceType.fromNotation(w.charAt(0)));
|
jaroslav@49
|
283 |
}
|
jaroslav@49
|
284 |
board.setTurn(turn);
|
jaroslav@49
|
285 |
}
|
jaroslav@49
|
286 |
|
jaroslav@49
|
287 |
private static void checkRochade(Board b, Square s) {
|
jaroslav@49
|
288 |
if (s.getPosition().getX() == 'E') {
|
jaroslav@49
|
289 |
int y = s.getPosition().getY();
|
jaroslav@49
|
290 |
final Square gRow = BoardModel.findSquare(b, 'G', y);
|
jaroslav@49
|
291 |
if (
|
jaroslav@49
|
292 |
BoardModel.findSquare(b, 'H', y).getPiece() == BoardModel.PieceType.ROCK
|
jaroslav@49
|
293 |
&&
|
jaroslav@49
|
294 |
BoardModel.findSquare(b, 'F', y).getPiece() == null
|
jaroslav@49
|
295 |
&&
|
jaroslav@49
|
296 |
gRow.getPiece() == null
|
jaroslav@49
|
297 |
) {
|
jaroslav@49
|
298 |
gRow.setAccessible(true);
|
jaroslav@49
|
299 |
}
|
jaroslav@49
|
300 |
final Square cRow = BoardModel.findSquare(b, 'C', y);
|
jaroslav@49
|
301 |
if (
|
jaroslav@49
|
302 |
BoardModel.findSquare(b, 'A', y).getPiece() == BoardModel.PieceType.ROCK
|
jaroslav@49
|
303 |
&&
|
jaroslav@49
|
304 |
BoardModel.findSquare(b, 'B', y).getPiece() == null
|
jaroslav@49
|
305 |
&&
|
jaroslav@49
|
306 |
BoardModel.findSquare(b, 'D', y).getPiece() == null
|
jaroslav@49
|
307 |
&&
|
jaroslav@49
|
308 |
cRow.getPiece() == null
|
jaroslav@49
|
309 |
) {
|
jaroslav@49
|
310 |
cRow.setAccessible(true);
|
jaroslav@49
|
311 |
}
|
jaroslav@49
|
312 |
}
|
jaroslav@49
|
313 |
}
|
jaroslav@49
|
314 |
}
|