Source Code Cross Referenced for GameDemo.java in  » 6.0-JDK-Modules » j2me » basis » demos » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » basis.demos 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * @(#)GameDemo.java	1.6 06/10/10
003:         *
004:         * Copyright  1990-2006 Sun Microsystems, Inc. All Rights Reserved.
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006:         * 
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License version
009:         * 2 only, as published by the Free Software Foundation. 
010:         * 
011:         * This program is distributed in the hope that it will be useful, but
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014:         * General Public License version 2 for more details (a copy is
015:         * included at /legal/license.txt). 
016:         * 
017:         * You should have received a copy of the GNU General Public License
018:         * version 2 along with this work; if not, write to the Free Software
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA 
021:         * 
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023:         * Clara, CA 95054 or visit www.sun.com if you need additional
024:         * information or have any questions. 
025:         */
026:        package basis.demos;
027:
028:        import java.awt.*;
029:        import java.awt.event.*;
030:        import java.io.*;
031:        import java.util.*;
032:        import basis.Builder;
033:
034:        public class GameDemo extends Demo implements  KeyListener,
035:                FocusListener {
036:            private static final int OUTSIDE = 0;
037:            private static final int INSIDE = 1;
038:            private static final int ACTIVE = 2;
039:            private static final int FIXED = 3;
040:            private static final int SPARE = 4;
041:            private static final int BLANK = 5;
042:            private static final Color COLOR_OUTSIDE = Builder.SUN_YELLOW;
043:            private static final Color COLOR_INSIDE = Builder.SUN_BLUE;
044:            private static final Color COLOR_ACTIVE = Builder.SUN_RED;
045:            private static final Color COLOR_SPARE = Builder.SUN_LIGHTBLUE;
046:            private static final Color COLOR_BLANK = Color.white;
047:            private static final int DEFAULT_DELAY = 101;
048:            private static final int DELAY_INCREMENT = 10;
049:            private static final int DEFAULT_LIVES = 3;
050:            private static final Color[] winnerColors = { Builder.SUN_RED,
051:                    Builder.SUN_BLUE };
052:            private int demoWidth;
053:            private int demoHeight;
054:            private int rows = 30;
055:            private int cols = 30;
056:            private int[][] cells = new int[rows][cols];
057:            private int cellWidth;
058:            private int cellHeight;
059:            private int target;
060:            private int level = 1;
061:            private int total;
062:            private int delay = DEFAULT_DELAY;
063:            private int lives = DEFAULT_LIVES;
064:            private boolean initialized;
065:            private boolean stopped; // player stopped by user
066:            private boolean paused; // game paused by user
067:            private boolean aborted; // game aborted by user
068:            private boolean halted; // game halted by system
069:            private boolean crashed;
070:            private boolean gameover;
071:            private boolean showHighScores;
072:            private boolean showHelpStrings;
073:            private Animator animator = new Animator();
074:            private Player player;
075:            private ArrayList enemies;
076:            private ArrayList highScores = new ArrayList();
077:            private ArrayList helpStrings = new ArrayList();
078:            private Image pausedImage;
079:            private Image abortedImage;
080:            private Image gameoverImage;
081:            private boolean newGame;
082:            private boolean winner;
083:            private int percentageArea;
084:            private int percentageTime;
085:            private long startTime;
086:            private long pausedTime;
087:            private long haltedTime;
088:            private boolean warmed;
089:
090:            public GameDemo() {
091:                // start early to "warm up"
092:                animator.start();
093:                pausedImage = ImageDemo.loadImage(this , "images/paused.gif");
094:                abortedImage = ImageDemo.loadImage(this , "images/aborted.gif");
095:                gameoverImage = ImageDemo
096:                        .loadImage(this , "images/gameover.gif");
097:                addKeyListener(this );
098:                addFocusListener(this );
099:                addMouseListener(new MouseAdapter() {
100:                    public void mousePressed(MouseEvent e) {
101:                        requestFocus();
102:                    }
103:                });
104:                helpStrings.add("n/1-9   New game");
105:                helpStrings.add("arrows      Move");
106:                helpStrings.add("i/j/k/l     Move");
107:                helpStrings.add("space       Stop");
108:                helpStrings.add("p          Pause");
109:                helpStrings.add("a/ESC      Abort");
110:                helpStrings.add("s/-       Slower");
111:                helpStrings.add("d/=      Default");
112:                helpStrings.add("f/+       Faster");
113:                helpStrings.add("z     Highscores");
114:                helpStrings.add("h           Help");
115:                loadHighScores();
116:            }
117:
118:            public void paint(Graphics g) {
119:                requestFocus();
120:                if (winner) {
121:                    return;
122:                }
123:                Dimension d = getSize();
124:                demoWidth = d.width;
125:                demoHeight = d.height;
126:                cellWidth = demoWidth / cols;
127:                cellHeight = demoHeight / (rows + 1);
128:                if (!initialized) {
129:                    play(false);
130:                    halted = true;
131:                    showHelpStrings = true;
132:                    initialized = true;
133:                }
134:                if (showHelpStrings) {
135:                    drawStrings(g, "Jonix", helpStrings);
136:                    return;
137:                }
138:                if (showHighScores) {
139:                    loadHighScores();
140:                    drawStrings(g, "High Scores", highScores, 10);
141:                    return;
142:                }
143:                for (int row = 0; row < rows; row++) {
144:                    for (int col = 0; col < cols; col++) {
145:                        if (cells[row][col] == OUTSIDE) {
146:                            g.setColor(COLOR_OUTSIDE);
147:                        }
148:                        if (cells[row][col] == INSIDE) {
149:                            g.setColor(COLOR_INSIDE);
150:                        }
151:                        if (cells[row][col] == ACTIVE) {
152:                            g.setColor(COLOR_ACTIVE);
153:                        }
154:                        if (cells[row][col] == SPARE) {
155:                            g.setColor(COLOR_SPARE);
156:                        }
157:                        if (cells[row][col] == BLANK) {
158:                            g.setColor(COLOR_BLANK);
159:                        }
160:                        g.fillRect(col * cellWidth, row * cellHeight,
161:                                cellWidth, cellHeight);
162:                        if (cells[row][col] == SPARE) {
163:                            g.setColor(COLOR_BLANK);
164:                            g.drawRect(col * cellWidth, row * cellHeight,
165:                                    cellWidth - 1, cellHeight - 1);
166:                        }
167:                    }
168:                }
169:                player.draw(g);
170:                for (int i = 0; i < enemies.size(); i++) {
171:                    Enemy enemy = (Enemy) enemies.get(i);
172:                    enemy.draw(g);
173:                }
174:                if (paused || aborted || gameover) {
175:                    Image image = pausedImage;
176:                    if (aborted) {
177:                        image = abortedImage;
178:                    }
179:                    if (gameover) {
180:                        image = gameoverImage;
181:                    }
182:                    ((Graphics2D) g).setComposite(AlphaComposite.getInstance(
183:                            AlphaComposite.SRC_OVER, 0.5f));
184:                    g.drawImage(image, demoWidth / 10, 4 * demoHeight / 9,
185:                            8 * demoWidth / 10, demoHeight / 9, this );
186:                }
187:                drawPercentageTime();
188:            }
189:
190:            private void drawStrings(Graphics g, String heading,
191:                    ArrayList strings) {
192:                drawStrings(g, heading, strings, strings.size());
193:            }
194:
195:            private void drawStrings(Graphics g, String heading,
196:                    ArrayList strings, int number) {
197:                g.setColor(COLOR_OUTSIDE);
198:                g.fillRect(0, 0, demoWidth, demoHeight);
199:                String longest = "";
200:                for (int i = 0; i < strings.size(); i++) {
201:                    String s = (String) strings.get(i);
202:                    if (s.length() > longest.length()) {
203:                        longest = s;
204:                    }
205:                }
206:                int fontSize = demoHeight / (number + 2) - 2;
207:                g.setColor(Builder.SUN_RED);
208:                int headingFontSize = 2 * fontSize;
209:                int fw = 0;
210:                while (true) {
211:                    Font font = new Font("Monospaced", Font.BOLD,
212:                            headingFontSize);
213:                    g.setFont(font);
214:                    FontMetrics fm = g.getFontMetrics(font);
215:                    fw = fm.stringWidth(heading);
216:                    if (fw < demoWidth) {
217:                        break;
218:                    }
219:                    headingFontSize -= 4;
220:                }
221:                g.drawString(heading, (demoWidth - fw) / 2, headingFontSize);
222:                g.setColor(Builder.SUN_BLUE);
223:                Font font = new Font("Monospaced", Font.PLAIN, fontSize);
224:                g.setFont(font);
225:                FontMetrics fm = g.getFontMetrics(font);
226:                fw = fm.stringWidth(longest);
227:                for (int i = 0; i < strings.size() && i < number; i++) {
228:                    String s = (String) strings.get(i);
229:                    g.drawString(s, (demoWidth - fw) / 2, (i + 3) * fontSize);
230:                }
231:            }
232:
233:            private void play(boolean preserve) {
234:                if (preserve) {
235:                    for (int row = 0; row < rows; row++) {
236:                        for (int col = 0; col < cols; col++) {
237:                            if (cells[row][col] == ACTIVE) {
238:                                cells[row][col] = INSIDE;
239:                            }
240:                        }
241:                    }
242:                } else {
243:                    target = 0;
244:                    for (int row = 0; row < rows; row++) {
245:                        for (int col = 0; col < cols; col++) {
246:                            if (row < rows / 10 || row > 9 * rows / 10
247:                                    || row < 3 || row >= rows - 3
248:                                    || col < cols / 10 || col > 9 * cols / 10
249:                                    || col < 3 || col >= cols - 3) {
250:                                cells[row][col] = OUTSIDE;
251:                            } else {
252:                                cells[row][col] = INSIDE;
253:                                target++;
254:                            }
255:                        }
256:                    }
257:                    int col = cols / 2 - DEFAULT_LIVES / 2;
258:                    for (int c = 0; c < DEFAULT_LIVES; c++) {
259:                        if (c < lives) {
260:                            cells[0][col + c] = SPARE;
261:                        } else {
262:                            cells[0][col + c] = BLANK;
263:                        }
264:                    }
265:                }
266:                player = new Player();
267:                ArrayList newEnemies = new ArrayList();
268:                if (preserve) {
269:                    for (int i = 0; i < enemies.size(); i++) {
270:                        Enemy enemy = (Enemy) enemies.get(i);
271:                        if (enemy.inside) {
272:                            newEnemies.add(enemy);
273:                        }
274:                    }
275:                }
276:                for (int i = 0; i < level; i++) {
277:                    newEnemies.add(new Enemy(false));
278:                    if (!preserve) {
279:                        newEnemies.add(new Enemy(true));
280:                    }
281:                }
282:                enemies = newEnemies;
283:                percentageArea = percentageArea();
284:                setStatus("Level " + level + " Score "
285:                        + (total + percentageArea));
286:                startTime = System.currentTimeMillis();
287:                percentageTime = 100;
288:                crashed = false;
289:                aborted = false;
290:                gameover = false;
291:            }
292:
293:            private void crash() {
294:                halted = true;
295:                lives--;
296:                percentageArea = percentageArea();
297:                setStatus("Level " + level + " Score "
298:                        + (total + percentageArea));
299:                if (lives > 0) {
300:                    repaint();
301:                    sleep(3000);
302:                    // In case user aborted during delay...
303:                    if (!aborted) {
304:                        play(true);
305:                        halted = false;
306:                        repaint();
307:                    }
308:                    return;
309:                }
310:                total += percentageArea;
311:                if (total > 0) {
312:                    String scoreString = "" + total;
313:                    while (scoreString.length() < 3) {
314:                        scoreString = " " + scoreString;
315:                    }
316:                    boolean newHighScore = false;
317:                    boolean inserted = false;
318:                    for (int i = 0; i < highScores.size(); i++) {
319:                        String s = (String) highScores.get(i);
320:                        s = s.trim();
321:                        try {
322:                            int score = Integer.parseInt(s);
323:                            if (total >= score) {
324:                                highScores.add(i, scoreString);
325:                                inserted = true;
326:                                if (i == 0) {
327:                                    newHighScore = true;
328:                                }
329:                                break;
330:                            }
331:                        } catch (NumberFormatException nfe) {
332:                        }
333:                    }
334:                    if (!inserted) {
335:                        highScores.add(scoreString);
336:                        if (highScores.size() == 1) {
337:                            newHighScore = true;
338:                        }
339:                    }
340:                    while (highScores.size() > 10) {
341:                        highScores.remove(highScores.size() - 1);
342:                    }
343:                    saveHighScores();
344:                    if (newHighScore) {
345:                        sleep(1000);
346:                        winner();
347:                        showHighScores = true;
348:                        repaint();
349:                    }
350:                }
351:                level = 1;
352:                gameover = true;
353:                repaint();
354:            }
355:
356:            private int percentageArea() {
357:                if (target == 0) {
358:                    return 0;
359:                }
360:                int todo = 0;
361:                for (int row = 0; row < rows; row++) {
362:                    for (int col = 0; col < cols; col++) {
363:                        if (cells[row][col] == INSIDE
364:                                || cells[row][col] == ACTIVE) {
365:                            todo++;
366:                        }
367:                    }
368:                }
369:                return (target - todo) * 100 / target;
370:            }
371:
372:            private int percentageTime() {
373:                long currentTime = System.currentTimeMillis();
374:                int lapsedTime = (int) ((currentTime - startTime) / 1000);
375:                int totalTime = 60 * level;
376:                int x = 100 * (totalTime - lapsedTime) / totalTime;
377:                x = x < 0 ? 0 : x;
378:                return x;
379:            }
380:
381:            private void fix(int row, int col) {
382:                if (row < 0 || row >= rows) {
383:                    return;
384:                }
385:                if (col < 0 || col >= cols) {
386:                    return;
387:                }
388:                if (cells[row][col] != INSIDE) {
389:                    return;
390:                }
391:                cells[row][col] = FIXED;
392:                fix(row - 1, col - 1);
393:                fix(row - 1, col);
394:                fix(row - 1, col + 1);
395:                fix(row, col - 1);
396:                fix(row, col + 1);
397:                fix(row + 1, col - 1);
398:                fix(row + 1, col);
399:                fix(row + 1, col + 1);
400:            }
401:
402:            private void winner() {
403:                winner = true;
404:                Graphics g = getGraphics();
405:                String string = "High Score!";
406:                int fontSize = demoWidth / string.length();
407:                fontSize = fontSize > demoHeight / 2 ? demoHeight / 2
408:                        : fontSize;
409:                int fw = 0;
410:                while (true) {
411:                    Font font = new Font("SansSerif", Font.BOLD, fontSize);
412:                    g.setFont(font);
413:                    FontMetrics fm = g.getFontMetrics(font);
414:                    fw = fm.stringWidth(string);
415:                    if (fw < demoWidth) {
416:                        break;
417:                    }
418:                    fontSize -= 4;
419:                }
420:                int color = 0;
421:                for (int i = 0; i < 300; i++) {
422:                    if (!hasFocus()) {
423:                        break;
424:                    }
425:                    if (i % 10 == 0) {
426:                        g.setColor(winnerColors[color++ % winnerColors.length]);
427:                        g.fillRect(0, 0, demoWidth, demoHeight);
428:                    }
429:                    g.setColor(randomColor());
430:                    g.drawString(string, demoWidth / 2 - fw / 2, demoHeight / 2
431:                            + fontSize / 2);
432:                    sleep(10);
433:                }
434:                winner = false;
435:            }
436:
437:            private Color randomColor() {
438:                float min = 0.3f;
439:                float red = (float) (Math.random() + min);
440:                float green = (float) (Math.random() + min);
441:                float blue = (float) (Math.random() + min);
442:                red = red > 1.0f ? 1.0f : red;
443:                green = green > 1.0f ? 1.0f : green;
444:                blue = blue > 1.0f ? 1.0f : blue;
445:                return new Color(red, green, blue);
446:            }
447:
448:            private void sleep(int millis) {
449:                try {
450:                    Thread.sleep(millis);
451:                } catch (InterruptedException ie) {
452:                }
453:                startTime += millis;
454:            }
455:
456:            public void keyPressed(KeyEvent e) {
457:                char keyChar = e.getKeyChar();
458:                int keyCode = e.getKeyCode();
459:                long currentTime = e.getWhen();
460:                if (keyChar == 'n') {
461:                    level = 1;
462:                    newGame = true;
463:                }
464:                try {
465:                    int value = Integer.parseInt("" + keyChar);
466:                    if (value >= 1 && value <= 9) {
467:                        level = value;
468:                    }
469:                    newGame = true;
470:                } catch (NumberFormatException nfe) {
471:                }
472:                if (newGame) {
473:                    warmed = true;
474:                    // all the fields animator waits on...
475:                    paused = false;
476:                    aborted = false;
477:                    halted = false;
478:                    gameover = false;
479:                    showHelpStrings = false;
480:                    showHighScores = false;
481:                    if (animator.isAlive()) {
482:                        animator.interrupt();
483:                    }
484:                    return;
485:                }
486:                int dir = Player.NONE;
487:                if (keyChar == 'i' || keyCode == KeyEvent.VK_UP) {
488:                    dir = Player.UP;
489:                }
490:                if (keyChar == 'k' || keyCode == KeyEvent.VK_DOWN) {
491:                    dir = Player.DOWN;
492:                }
493:                if (keyChar == 'j' || keyCode == KeyEvent.VK_LEFT) {
494:                    dir = Player.LEFT;
495:                }
496:                if (keyChar == 'l' || keyCode == KeyEvent.VK_RIGHT) {
497:                    dir = Player.RIGHT;
498:                }
499:                if (dir == Player.UP || dir == Player.DOWN
500:                        || dir == Player.LEFT || dir == Player.RIGHT) {
501:                    if (player != null) {
502:                        player.dir = dir;
503:                        stopped = false;
504:                    }
505:                    return;
506:                }
507:                if (keyChar == 'p') {
508:                    paused = paused ? false : true;
509:                    if (paused) {
510:                        pausedTime = currentTime;
511:                    } else {
512:                        if (pausedTime > 0) {
513:                            startTime += (currentTime - pausedTime);
514:                        }
515:                    }
516:                    repaint();
517:                    return;
518:                }
519:                if (keyCode == KeyEvent.VK_ENTER) {
520:                    showHelpStrings = false;
521:                    showHighScores = false;
522:                    if (halted && haltedTime > 0) {
523:                        startTime += (currentTime - haltedTime);
524:                        halted = false;
525:                    }
526:                    repaint();
527:                }
528:                if (keyChar == ' ') {
529:                    stopped = true;
530:                    return;
531:                }
532:                if (keyChar == '+' || keyChar == 'f') {
533:                    delay -= DELAY_INCREMENT;
534:                    if (delay <= 0) {
535:                        delay = 1;
536:                    }
537:                    return;
538:                }
539:                if (keyChar == '=' || keyChar == 'd') {
540:                    delay = DEFAULT_DELAY;
541:                    return;
542:                }
543:                if (keyChar == '-' || keyChar == 's') {
544:                    delay += DELAY_INCREMENT;
545:                    if (delay > 201) {
546:                        delay = 201;
547:                    }
548:                    return;
549:                }
550:                if (keyChar == 'z') {
551:                    showHighScores = true;
552:                    showHelpStrings = false;
553:                    if (!halted) {
554:                        halted = true;
555:                        haltedTime = currentTime;
556:                    }
557:                    repaint();
558:                    return;
559:                }
560:                if (keyChar == 'h') {
561:                    showHelpStrings = true;
562:                    showHighScores = false;
563:                    repaint();
564:                    if (!halted) {
565:                        halted = true;
566:                        haltedTime = currentTime;
567:                    }
568:                    return;
569:                }
570:                if (keyChar == 'a' || keyCode == KeyEvent.VK_ESCAPE) {
571:                    lives = 0;
572:                    aborted = true;
573:                    animator.interrupt();
574:                    repaint();
575:                    return;
576:                }
577:            }
578:
579:            public void keyReleased(KeyEvent e) {
580:            }
581:
582:            public void keyTyped(KeyEvent e) {
583:            }
584:
585:            public void focusGained(FocusEvent e) {
586:                long currentTime = System.currentTimeMillis();
587:                if (!paused && halted && haltedTime > 0) {
588:                    startTime += currentTime - haltedTime;
589:                    haltedTime = 0;
590:                    halted = false;
591:                }
592:            }
593:
594:            public void focusLost(FocusEvent e) {
595:                long currentTime = System.currentTimeMillis();
596:                if (!paused && !halted) {
597:                    halted = true;
598:                    haltedTime = currentTime;
599:                }
600:            }
601:
602:            private void loadHighScores() {
603:                ArrayList newHighScores = new ArrayList();
604:                try {
605:                    FileInputStream fis = new FileInputStream("highscores");
606:                    BufferedReader br = new BufferedReader(
607:                            new InputStreamReader(fis));
608:                    while (true) {
609:                        String s = br.readLine();
610:                        if (s == null || s.length() <= 0) {
611:                            break;
612:                        }
613:                        newHighScores.add(s);
614:                    }
615:                    br.close();
616:                } catch (IOException ioe) {
617:                } catch (SecurityException se) {
618:                }
619:                highScores = newHighScores;
620:            }
621:
622:            private void saveHighScores() {
623:                try {
624:                    FileOutputStream fos = new FileOutputStream("highscores");
625:                    PrintWriter pw = new PrintWriter(
626:                            new OutputStreamWriter(fos));
627:                    for (int i = 0; i < highScores.size(); i++) {
628:                        String s = (String) highScores.get(i);
629:                        pw.println(s);
630:                    }
631:                    pw.flush();
632:                    pw.close();
633:
634:                } catch (IOException ioe) {
635:                }
636:            }
637:
638:            private void drawPercentageTime() {
639:                Graphics g = getGraphics();
640:                if (g == null) {
641:                    return;
642:                }
643:                int x = 0;
644:                int y = rows * cellHeight;
645:                int w = cols * cellWidth;
646:                int h = demoHeight - y;
647:                g.setColor(Color.white);
648:                g.fillRect(x, y, w, h);
649:                g.setColor(Builder.SUN_RED);
650:                g.fillRect(x, y, percentageTime * w / 100, h);
651:                g.setColor(Color.black);
652:                g.drawRect(x, y, w - 1, h - 1);
653:            }
654:
655:            class Animator extends Thread {
656:                public void run() {
657:                    setPriority(MAX_PRIORITY);
658:                    while (true) {
659:                        while (!warmed) {
660:                            try {
661:                                Thread.sleep(delay);
662:                            } catch (InterruptedException ie) {
663:                            }
664:                        }
665:                        if (newGame) {
666:                            total = 0;
667:                            lives = DEFAULT_LIVES;
668:                            play(false);
669:                            repaint();
670:                            newGame = false;
671:                        }
672:                        if (player != null) {
673:                            player.move();
674:                        }
675:                        if (enemies != null) {
676:                            for (int i = 0; i < enemies.size(); i++) {
677:                                Enemy enemy = (Enemy) enemies.get(i);
678:                                enemy.move();
679:                            }
680:                        }
681:                        int x = percentageTime();
682:                        if (x < percentageTime) {
683:                            percentageTime = x;
684:                            drawPercentageTime();
685:                        }
686:                        if (percentageTime <= 0) {
687:                            crash();
688:                        }
689:                        do {
690:                            try {
691:                                Thread.sleep(delay);
692:                            } catch (InterruptedException ie) {
693:                            }
694:                        } while (paused || aborted || halted || gameover
695:                                || showHelpStrings || showHighScores);
696:                    }
697:                }
698:            }
699:
700:            class Player {
701:                static final int NONE = 0;
702:                static final int UP = 1;
703:                static final int DOWN = 2;
704:                static final int LEFT = 3;
705:                static final int RIGHT = 4;
706:                Color color = Builder.SUN_RED;
707:                int row;
708:                int col;
709:                int dir = UP;
710:                boolean inside;
711:
712:                public Player() {
713:                    stopped = true;
714:                    for (int row = 0; row < rows; row++) {
715:                        for (int col = cols - 1; col >= 0; col--) {
716:                            if (cells[row][col] == SPARE) {
717:                                cells[row][col] = BLANK;
718:                                this .row = row;
719:                                this .col = col;
720:                                break;
721:                            }
722:                        }
723:                    }
724:                }
725:
726:                public void move() {
727:                    if (crashed) {
728:                        crash();
729:                        crashed = false;
730:                        return;
731:                    }
732:                    if (stopped || paused || aborted || halted || gameover
733:                            || showHelpStrings || showHighScores) {
734:                        return;
735:                    }
736:                    int oldRow = row;
737:                    int oldCol = col;
738:                    if (dir == UP) {
739:                        row = oldRow > 0 ? oldRow - 1 : oldRow;
740:                    }
741:                    if (dir == DOWN) {
742:                        row = oldRow < rows - 1 ? oldRow + 1 : oldRow;
743:                    }
744:                    if (dir == LEFT) {
745:                        col = oldCol > 0 ? oldCol - 1 : oldCol;
746:                    }
747:                    if (dir == RIGHT) {
748:                        col = oldCol < cols - 1 ? oldCol + 1 : oldCol;
749:                    }
750:                    if (row != oldRow || col != oldCol) {
751:                        Graphics g = getGraphics();
752:                        if (cells[oldRow][oldCol] == ACTIVE) {
753:                            g.setColor(COLOR_ACTIVE);
754:                        }
755:                        if (cells[oldRow][oldCol] == OUTSIDE) {
756:                            g.setColor(COLOR_OUTSIDE);
757:                        }
758:                        if (cells[oldRow][oldCol] == SPARE) {
759:                            g.setColor(COLOR_SPARE);
760:                        }
761:                        if (cells[oldRow][oldCol] == BLANK) {
762:                            g.setColor(COLOR_BLANK);
763:                        }
764:                        g.fillRect(oldCol * cellWidth, oldRow * cellHeight,
765:                                cellWidth, cellHeight);
766:                        if (cells[oldRow][oldCol] == SPARE) {
767:                            g.setColor(COLOR_BLANK);
768:                            g.drawRect(oldCol * cellWidth, oldRow * cellHeight,
769:                                    cellWidth - 1, cellHeight - 1);
770:                        }
771:                        draw(g);
772:                    }
773:                    if (cells[row][col] == ACTIVE) {
774:                        crashed = true;
775:                        crash();
776:                        return;
777:                    }
778:                    if (cells[row][col] == INSIDE) {
779:                        inside = true;
780:                        cells[row][col] = ACTIVE;
781:                    }
782:                    if (inside && cells[row][col] == OUTSIDE) {
783:                        percentageTime = percentageTime();
784:                        stopped = true;
785:                        inside = false;
786:                        halted = true;
787:                        for (int i = 0; i < enemies.size(); i++) {
788:                            Enemy enemy = (Enemy) enemies.get(i);
789:                            fix(enemy.row, enemy.col);
790:                        }
791:                        for (int row = 0; row < rows; row++) {
792:                            for (int col = 0; col < cols; col++) {
793:                                if (cells[row][col] == ACTIVE) {
794:                                    cells[row][col] = OUTSIDE;
795:                                }
796:                                if (cells[row][col] == INSIDE) {
797:                                    cells[row][col] = OUTSIDE;
798:                                }
799:                                if (cells[row][col] == FIXED) {
800:                                    cells[row][col] = INSIDE;
801:                                }
802:                            }
803:                        }
804:                        repaint();
805:                        percentageArea = percentageArea();
806:                        setStatus("Level " + level + " Score "
807:                                + (total + percentageArea));
808:                        if (percentageArea >= 75) {
809:                            total += percentageArea + percentageTime;
810:                            setStatus("Level " + level + " Score " + total);
811:                            level++;
812:                            sleep(3000);
813:                            play(false);
814:                            repaint();
815:                        }
816:                        halted = false;
817:                    }
818:                }
819:
820:                void draw(Graphics g) {
821:                    g.setColor(color);
822:                    g.fillRect(col * cellWidth, row * cellHeight, cellWidth,
823:                            cellHeight);
824:                    g.setColor(Color.black);
825:                    g.drawRect(col * cellWidth, row * cellHeight,
826:                            cellWidth - 1, cellHeight - 1);
827:                }
828:
829:            }
830:
831:            class Enemy {
832:                static final int SE = 0;
833:                static final int SW = 1;
834:                static final int NW = 2;
835:                static final int NE = 3;
836:                int[][] array = { { SE, NE, SW, NW }, { SW, SE, NW, NE },
837:                        { NW, SW, NE, SE }, { NE, NW, SE, SW } };
838:                Color color;
839:                boolean inside;
840:                int row;
841:                int col;
842:                int dir = (int) (Math.random() * 4);
843:
844:                public Enemy(boolean inside) {
845:                    this .inside = inside;
846:                    if (inside) {
847:                        color = COLOR_OUTSIDE;
848:                    } else {
849:                        color = COLOR_INSIDE;
850:                    }
851:                    while (true) {
852:                        row = (int) (Math.random() * rows);
853:                        col = (int) (Math.random() * cols);
854:                        if (!inside
855:                                && ((row > rows / 10 && row < 9 * rows / 10) || (col > cols / 10 && col < 9 * cols / 10))) {
856:                            continue;
857:                        }
858:                        if (inside && cells[row][col] == INSIDE) {
859:                            break;
860:                        }
861:                        if (!inside && cells[row][col] == OUTSIDE) {
862:                            break;
863:                        }
864:                    }
865:                }
866:
867:                public void move() {
868:                    if (paused || aborted || halted || crashed || gameover
869:                            || showHelpStrings || showHighScores) {
870:                        return;
871:                    }
872:                    int oldRow = row;
873:                    int oldCol = col;
874:                    int oldDir = dir;
875:                    for (int i = 0; i < 4; i++) {
876:                        dir = array[oldDir][i];
877:                        if (dir == SE) {
878:                            row = oldRow + 1;
879:                            col = oldCol + 1;
880:                        }
881:                        if (dir == SW) {
882:                            row = oldRow + 1;
883:                            col = oldCol - 1;
884:                        }
885:                        if (dir == NW) {
886:                            row = oldRow - 1;
887:                            col = oldCol - 1;
888:                        }
889:                        if (dir == NE) {
890:                            row = oldRow - 1;
891:                            col = oldCol + 1;
892:                        }
893:                        if (row < 0 || row >= rows || col < 0 || col >= cols) {
894:                            continue;
895:                        }
896:                        if (inside && cells[row][col] != OUTSIDE) {
897:                            break;
898:                        }
899:                        if (!inside && cells[row][col] == OUTSIDE) {
900:                            break;
901:                        }
902:                    }
903:                    Graphics g = getGraphics();
904:                    boolean hit = false;
905:                    if (inside && cells[player.row][player.col] == INSIDE
906:                            || !inside
907:                            && cells[player.row][player.col] == OUTSIDE) {
908:                        if (row == player.row && col == player.col
909:                                || row - 1 == player.row && col == player.col
910:                                || row + 1 == player.row && col == player.col
911:                                || row == player.row && col - 1 == player.col
912:                                || row == player.row && col + 1 == player.col) {
913:                            hit = true;
914:                        }
915:                    }
916:                    if (inside) {
917:                        if (cells[row][col] == ACTIVE || row > 0
918:                                && cells[row - 1][col] == ACTIVE
919:                                || row < rows - 1
920:                                && cells[row + 1][col] == ACTIVE || col > 0
921:                                && cells[row][col - 1] == ACTIVE
922:                                || col < cols - 1
923:                                && cells[row][col + 1] == ACTIVE) {
924:                            hit = true;
925:                        }
926:                    }
927:                    draw(g);
928:                    if (inside) {
929:                        g.setColor(COLOR_INSIDE);
930:                    } else {
931:                        g.setColor(COLOR_OUTSIDE);
932:                    }
933:                    g.fillRect(oldCol * cellWidth, oldRow * cellHeight,
934:                            cellWidth, cellHeight);
935:                    if (hit) {
936:                        crashed = true;
937:                    }
938:                }
939:
940:                void draw(Graphics g) {
941:                    g.setColor(color);
942:                    g.fillRect(col * cellWidth, row * cellHeight, cellWidth,
943:                            cellHeight);
944:                    g.setColor(Color.black);
945:                    g.drawRect(col * cellWidth, row * cellHeight,
946:                            cellWidth - 1, cellHeight - 1);
947:                }
948:            }
949:        }
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