apps/plugins/sliding_puzzle.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 Vicentini Martin
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "plugin.h"
  22
  23 #ifdef HAVE_LCD_BITMAP
  24 PLUGIN_HEADER
  25
  26 /* variable button definitions */
  27 #if CONFIG_KEYPAD == RECORDER_PAD
  28 #define PUZZLE_QUIT BUTTON_OFF
  29 #define PUZZLE_LEFT BUTTON_LEFT
  30 #define PUZZLE_RIGHT BUTTON_RIGHT
  31 #define PUZZLE_UP BUTTON_UP
  32 #define PUZZLE_DOWN BUTTON_DOWN
  33 #define PUZZLE_SHUFFLE BUTTON_F1
  34 #define PUZZLE_PICTURE BUTTON_F2
  35
  36 #elif CONFIG_KEYPAD == ARCHOS_AV300_PAD
  37 #define PUZZLE_QUIT BUTTON_OFF
  38 #define PUZZLE_LEFT BUTTON_LEFT
  39 #define PUZZLE_RIGHT BUTTON_RIGHT
  40 #define PUZZLE_UP BUTTON_UP
  41 #define PUZZLE_DOWN BUTTON_DOWN
  42 #define PUZZLE_SHUFFLE BUTTON_F1
  43 #define PUZZLE_PICTURE BUTTON_F2
  44
  45 #elif CONFIG_KEYPAD == ONDIO_PAD
  46 #define PUZZLE_QUIT BUTTON_OFF
  47 #define PUZZLE_LEFT BUTTON_LEFT
  48 #define PUZZLE_RIGHT BUTTON_RIGHT
  49 #define PUZZLE_UP BUTTON_UP
  50 #define PUZZLE_DOWN BUTTON_DOWN
  51 #define PUZZLE_SHUFFLE_PICTURE_PRE BUTTON_MENU
  52 #define PUZZLE_SHUFFLE (BUTTON_MENU | BUTTON_REPEAT)
  53 #define PUZZLE_PICTURE (BUTTON_MENU | BUTTON_REL)
  54
  55 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
  56       (CONFIG_KEYPAD == IRIVER_H300_PAD)
  57 #define PUZZLE_QUIT BUTTON_OFF
  58 #define PUZZLE_LEFT BUTTON_LEFT
  59 #define PUZZLE_RIGHT BUTTON_RIGHT
  60 #define PUZZLE_UP BUTTON_UP
  61 #define PUZZLE_DOWN BUTTON_DOWN
  62 #define PUZZLE_SHUFFLE BUTTON_SELECT
  63 #define PUZZLE_PICTURE BUTTON_ON
  64
  65 #define PUZZLE_RC_QUIT BUTTON_RC_STOP
  66
  67 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
  68       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  69       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  70 #define PUZZLE_QUIT    (BUTTON_SELECT | BUTTON_MENU)
  71 #define PUZZLE_LEFT BUTTON_LEFT
  72 #define PUZZLE_RIGHT BUTTON_RIGHT
  73 #define PUZZLE_UP      BUTTON_MENU
  74 #define PUZZLE_DOWN    BUTTON_PLAY
  75 #define PUZZLE_SHUFFLE (BUTTON_SELECT | BUTTON_LEFT)
  76 #define PUZZLE_PICTURE (BUTTON_SELECT | BUTTON_RIGHT)
  77
  78 #elif (CONFIG_KEYPAD == IAUDIO_X5M5_PAD)
  79 #define PUZZLE_QUIT BUTTON_POWER
  80 #define PUZZLE_LEFT BUTTON_LEFT
  81 #define PUZZLE_RIGHT BUTTON_RIGHT
  82 #define PUZZLE_UP BUTTON_UP
  83 #define PUZZLE_DOWN BUTTON_DOWN
  84 #define PUZZLE_SHUFFLE BUTTON_REC
  85 #define PUZZLE_PICTURE BUTTON_PLAY
  86
  87 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
  88 #define PUZZLE_QUIT BUTTON_POWER
  89 #define PUZZLE_LEFT BUTTON_LEFT
  90 #define PUZZLE_RIGHT BUTTON_RIGHT
  91 #define PUZZLE_UP BUTTON_UP
  92 #define PUZZLE_DOWN BUTTON_DOWN
  93 #define PUZZLE_SHUFFLE BUTTON_SELECT
  94 #define PUZZLE_PICTURE BUTTON_A
  95
  96 #elif (CONFIG_KEYPAD == SANSA_E200_PAD) || \
  97 (CONFIG_KEYPAD == SANSA_C200_PAD)
  98 #define PUZZLE_QUIT BUTTON_POWER
  99 #define PUZZLE_LEFT BUTTON_LEFT
 100 #define PUZZLE_RIGHT BUTTON_RIGHT
 101 #define PUZZLE_UP BUTTON_UP
 102 #define PUZZLE_DOWN BUTTON_DOWN
 103 #define PUZZLE_SHUFFLE BUTTON_REC
 104 #define PUZZLE_PICTURE BUTTON_SELECT
 105
 106 #elif (CONFIG_KEYPAD == SANSA_FUZE_PAD)
 107 #define PUZZLE_QUIT (BUTTON_HOME|BUTTON_REPEAT)
 108 #define PUZZLE_LEFT BUTTON_LEFT
 109 #define PUZZLE_RIGHT BUTTON_RIGHT
 110 #define PUZZLE_UP BUTTON_UP
 111 #define PUZZLE_DOWN BUTTON_DOWN
 112 #define PUZZLE_SHUFFLE BUTTON_SELECT|BUTTON_DOWN
 113 #define PUZZLE_PICTURE BUTTON_SELECT
 114
 115 #elif (CONFIG_KEYPAD == SANSA_CLIP_PAD)
 116 #define PUZZLE_QUIT BUTTON_POWER
 117 #define PUZZLE_LEFT BUTTON_LEFT
 118 #define PUZZLE_RIGHT BUTTON_RIGHT
 119 #define PUZZLE_UP BUTTON_UP
 120 #define PUZZLE_DOWN BUTTON_DOWN
 121 #define PUZZLE_SHUFFLE BUTTON_HOME
 122 #define PUZZLE_PICTURE BUTTON_SELECT
 123
 124 #elif (CONFIG_KEYPAD == SANSA_M200_PAD)
 125 #define PUZZLE_QUIT BUTTON_POWER
 126 #define PUZZLE_LEFT BUTTON_LEFT
 127 #define PUZZLE_RIGHT BUTTON_RIGHT
 128 #define PUZZLE_UP BUTTON_UP
 129 #define PUZZLE_DOWN BUTTON_DOWN
 130 #define PUZZLE_SHUFFLE (BUTTON_SELECT | BUTTON_UP)
 131 #define PUZZLE_PICTURE (BUTTON_SELECT | BUTTON_REL)
 132
 133 #elif (CONFIG_KEYPAD == IRIVER_H10_PAD)
 134 #define PUZZLE_QUIT BUTTON_POWER
 135 #define PUZZLE_LEFT BUTTON_LEFT
 136 #define PUZZLE_RIGHT BUTTON_RIGHT
 137 #define PUZZLE_UP BUTTON_SCROLL_UP
 138 #define PUZZLE_DOWN BUTTON_SCROLL_DOWN
 139 #define PUZZLE_SHUFFLE BUTTON_REW
 140 #define PUZZLE_PICTURE BUTTON_PLAY
 141
 142 #elif (CONFIG_KEYPAD == GIGABEAT_S_PAD)
 143 #define PUZZLE_QUIT BUTTON_BACK
 144 #define PUZZLE_LEFT BUTTON_LEFT
 145 #define PUZZLE_RIGHT BUTTON_RIGHT
 146 #define PUZZLE_UP BUTTON_UP
 147 #define PUZZLE_DOWN BUTTON_DOWN
 148 #define PUZZLE_SHUFFLE BUTTON_SELECT
 149 #define PUZZLE_PICTURE BUTTON_MENU
 150
 151 #elif (CONFIG_KEYPAD == MROBE100_PAD)
 152 #define PUZZLE_QUIT BUTTON_POWER
 153 #define PUZZLE_LEFT BUTTON_LEFT
 154 #define PUZZLE_RIGHT BUTTON_RIGHT
 155 #define PUZZLE_UP BUTTON_UP
 156 #define PUZZLE_DOWN BUTTON_DOWN
 157 #define PUZZLE_SHUFFLE BUTTON_SELECT
 158 #define PUZZLE_PICTURE BUTTON_DISPLAY
 159
 160 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
 161 #define PUZZLE_QUIT BUTTON_RC_REC
 162 #define PUZZLE_LEFT BUTTON_RC_REW
 163 #define PUZZLE_RIGHT BUTTON_RC_FF
 164 #define PUZZLE_UP BUTTON_RC_VOL_UP
 165 #define PUZZLE_DOWN BUTTON_RC_VOL_DOWN
 166 #define PUZZLE_SHUFFLE BUTTON_RC_MODE
 167 #define PUZZLE_PICTURE BUTTON_RC_MENU
 168
 169 #elif (CONFIG_KEYPAD == COWON_D2_PAD)
 170 #define PUZZLE_QUIT BUTTON_POWER
 171 #define PUZZLE_QUIT_TEXT "[POWER]"
 172
 173 #elif CONFIG_KEYPAD == CREATIVEZVM_PAD
 174 #define PUZZLE_QUIT BUTTON_BACK
 175 #define PUZZLE_LEFT BUTTON_LEFT
 176 #define PUZZLE_RIGHT BUTTON_RIGHT
 177 #define PUZZLE_UP BUTTON_UP
 178 #define PUZZLE_DOWN BUTTON_DOWN
 179 #define PUZZLE_SHUFFLE BUTTON_PLAY
 180 #define PUZZLE_PICTURE BUTTON_MENU
 181
 182 #elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
 183 #define PUZZLE_QUIT BUTTON_POWER
 184 #define PUZZLE_LEFT BUTTON_LEFT
 185 #define PUZZLE_RIGHT BUTTON_RIGHT
 186 #define PUZZLE_UP BUTTON_UP
 187 #define PUZZLE_DOWN BUTTON_DOWN
 188 #define PUZZLE_SHUFFLE BUTTON_VIEW
 189 #define PUZZLE_PICTURE BUTTON_MENU
 190
 191 #elif CONFIG_KEYPAD == PHILIPS_SA9200_PAD
 192 #define PUZZLE_QUIT BUTTON_POWER
 193 #define PUZZLE_LEFT BUTTON_PREV
 194 #define PUZZLE_RIGHT BUTTON_NEXT
 195 #define PUZZLE_UP BUTTON_UP
 196 #define PUZZLE_DOWN BUTTON_DOWN
 197 #define PUZZLE_SHUFFLE BUTTON_RIGHT
 198 #define PUZZLE_PICTURE BUTTON_MENU
 199
 200 #elif CONFIG_KEYPAD == ONDAVX747_PAD || \
 201 CONFIG_KEYPAD == ONDAVX777_PAD || \
 202 CONFIG_KEYPAD == MROBE500_PAD
 203 #define PUZZLE_QUIT BUTTON_POWER
 204 #define PUZZLE_QUIT_TEXT "[POWER]"
 205
 206 #elif (CONFIG_KEYPAD == SAMSUNG_YH_PAD)
 207 #define PUZZLE_QUIT    BUTTON_REC
 208 #define PUZZLE_LEFT    BUTTON_LEFT
 209 #define PUZZLE_RIGHT   BUTTON_RIGHT
 210 #define PUZZLE_UP      BUTTON_UP
 211 #define PUZZLE_DOWN    BUTTON_DOWN
 212 #define PUZZLE_SHUFFLE BUTTON_REW
 213 #define PUZZLE_PICTURE BUTTON_PLAY
 214
 215 #elif (CONFIG_KEYPAD == PBELL_VIBE500_PAD)
 216 #define PUZZLE_QUIT    BUTTON_REC
 217 #define PUZZLE_LEFT    BUTTON_PREV
 218 #define PUZZLE_RIGHT   BUTTON_NEXT
 219 #define PUZZLE_UP      BUTTON_UP
 220 #define PUZZLE_DOWN    BUTTON_DOWN
 221 #define PUZZLE_SHUFFLE BUTTON_CANCEL
 222 #define PUZZLE_PICTURE BUTTON_MENU
 223
 224 #else
 225 #error No keymap defined!
 226 #endif
 227
 228 #ifdef HAVE_TOUCHSCREEN
 229 #ifndef PUZZLE_QUIT
 230 #define PUZZLE_QUIT    BUTTON_TOPLEFT
 231 #endif
 232 #ifndef PUZZLE_LEFT
 233 #define PUZZLE_LEFT    BUTTON_MIDLEFT
 234 #endif
 235 #ifndef PUZZLE_RIGHT
 236 #define PUZZLE_RIGHT   BUTTON_MIDRIGHT
 237 #endif
 238 #ifndef PUZZLE_UP
 239 #define PUZZLE_UP      BUTTON_TOPMIDDLE
 240 #endif
 241 #ifndef PUZZLE_DOWN
 242 #define PUZZLE_DOWN    BUTTON_BOTTOMMIDDLE
 243 #endif
 244 #ifndef PUZZLE_SHUFFLE
 245 #define PUZZLE_SHUFFLE BUTTON_BOTTOMLEFT
 246 #endif
 247 #ifndef PUZZLE_PICTURE
 248 #define PUZZLE_PICTURE BUTTON_CENTER
 249 #endif
 250 #ifndef PUZZLE_QUIT_TEXT
 251 #define PUZZLE_QUIT_TEXT "[TOPLEFT]"
 252 #endif
 253 #ifndef PUZZLE_SHUFFLE_TEXT
 254 #define PUZZLE_SHUFFLE_TEXT "[BOTTOMLEFT]"
 255 #endif
 256 #ifndef PUZZLE_PICTURE_TEXT
 257 #define PUZZLE_PICTURE_TEXT "[CENTER]"
 258 #endif
 259 #endif
 260
 261 #ifdef HAVE_ALBUMART
 262 #include "lib/read_image.h"
 263 #define READ_IMAGE read_image_file
 264 #else
 265 #define READ_IMAGE rb->read_bmp_file
 266 #endif
 267
 268 #include "pluginbitmaps/sliding_puzzle.h"
 269 #define IMAGE_WIDTH BMPWIDTH_sliding_puzzle
 270 #define IMAGE_HEIGHT BMPHEIGHT_sliding_puzzle
 271 #define IMAGE_SIZE IMAGE_WIDTH
 272
 273 /* use a square image, (the default Archos bitmap looks square on its display)
 274    Puzzle image dimension is min(lcd_height,lcd_width)
 275    4x4 is more convenient for square puzzles
 276    Note: sliding_puzzle.bmp should be evenly divisible by SPOTS_X
 277    and SPOTS_Y, otherwise lcd_bitmap_part stride won't be correct */
 278 #define SPOTS_X 4
 279 #define SPOTS_Y 4
 280 #define SPOTS_WIDTH  (IMAGE_WIDTH / SPOTS_X)
 281 #define SPOTS_HEIGHT (IMAGE_HEIGHT / SPOTS_Y)
 282 #define NUM_SPOTS    (SPOTS_X*SPOTS_Y)
 283 #define HOLE_ID      (NUM_SPOTS)
 284 #define INITIAL_HOLE (HOLE_ID-1)
 285
 286 enum picmodes
 287 {
 288     PICMODE_NUMERALS = 0,
 289     PICMODE_INITIAL_PICTURE,
 290     PICMODE_DEFAULT_PICTURE,
 291 #ifdef HAVE_ALBUMART
 292     PICMODE_ALBUM_ART,
 293 #endif
 294 //    PICMODE_RANDOM,
 295     PICMODE_LAST_XXX /* placeholder */
 296 };
 297
 298 static const char* const picmode_descriptions[] = {
 299     "Numerals",
 300     "Viewer Picture",
 301     "Default Picture",
 302 #ifdef HAVE_ALBUMART
 303     "Album Art",
 304 #endif
 305     "Shouldn't Get Here",
 306 };
 307
 308 static int spots[NUM_SPOTS];
 309 static int hole = INITIAL_HOLE, moves;
 310 static unsigned char s[32];
 311 static enum picmodes picmode = PICMODE_INITIAL_PICTURE;
 312 static int num_font = FONT_UI;
 313 static int moves_font = FONT_UI;
 314 static int moves_y = 0;
 315
 316 static unsigned char *img_buf;
 317 static size_t img_buf_len;
 318 #ifdef HAVE_ALBUMART
 319 static char albumart_path[MAX_PATH+1];
 320 #endif
 321 static char img_buf_path[MAX_PATH+1];
 322
 323 static const fb_data * puzzle_bmp_ptr;
 324 /* initial_bmp_path points to selected bitmap if this game is launched
 325    as a viewer for a .bmp file, or NULL if game is launched regular way */
 326 static const char * initial_bmp_path=NULL;
 327
 328 #ifdef HAVE_ALBUMART
 329 const char * get_albumart_bmp_path(void)
 330 {
 331     struct mp3entry* track = rb->audio_current_track();
 332
 333     if (!track || !track->path || track->path[0] == '\0')
 334         return NULL;
 335
 336     if (!rb->search_albumart_files(track, "", albumart_path, MAX_PATH ) )
 337         return NULL;
 338
 339     albumart_path[ MAX_PATH ] = '\0';
 340     return albumart_path;
 341 }
 342 #endif
 343
 344 const char * get_random_bmp_path(void)
 345 {
 346     return(initial_bmp_path);
 347 }
 348
 349 static bool load_resize_bitmap(void)
 350 {
 351     int rc;
 352     const char * filename = NULL;
 353
 354     /* initially assume using the built-in default */
 355     puzzle_bmp_ptr = sliding_puzzle;
 356
 357     switch( picmode ){
 358         /* some modes don't even need to touch disk and trivially succeed */
 359         case PICMODE_NUMERALS:
 360         case PICMODE_DEFAULT_PICTURE:
 361         default:
 362             return(true);
 363
 364 #ifdef HAVE_ALBUMART
 365         case PICMODE_ALBUM_ART:
 366             filename = get_albumart_bmp_path();
 367             break;
 368 #endif
 369 /*
 370         case PICMODE_RANDOM:
 371             if(NULL == (filename=get_random_bmp_path()) )
 372                 filename = initial_bmp_path;
 373             break;
 374 */
 375         case PICMODE_INITIAL_PICTURE:
 376             filename = initial_bmp_path;
 377             break;
 378     };
 379
 380     if( filename != NULL )
 381     {
 382         /* if we already loaded image before, don't touch disk */
 383         if( 0 == rb->strcmp( filename, img_buf_path ) )
 384         {
 385             puzzle_bmp_ptr = (const fb_data *)img_buf;
 386             return true;
 387         }
 388
 389         struct bitmap main_bitmap;
 390         rb->memset(&main_bitmap,0,sizeof(struct bitmap));
 391         main_bitmap.data = img_buf;
 392
 393         main_bitmap.width = IMAGE_WIDTH;
 394         main_bitmap.height = IMAGE_HEIGHT;
 395
 396         rc = READ_IMAGE( filename, &main_bitmap,
 397                          img_buf_len,
 398                          FORMAT_NATIVE|FORMAT_RESIZE|FORMAT_DITHER,
 399                          NULL);
 400         if( rc > 0 )
 401         {
 402             puzzle_bmp_ptr = (const fb_data *)img_buf;
 403             rb->strcpy( img_buf_path, filename );
 404             return true;
 405         }
 406     }
 407
 408     /* something must have failed. get_albumart_bmp_path could return
 409        NULL if albumart doesn't exist or couldn't be loaded, or
 410        read_bmp_file could have failed.  return false and caller should
 411        try the next mode (PICMODE_DEFAULT_PICTURE and PICMODE_NUMERALS will
 412        always succeed) */
 413     return false;
 414 }
 415
 416 /* draws a spot at the coordinates (x,y), range of p is 1-20 */
 417 static void draw_spot(int p, int x, int y)
 418 {
 419     int w, h;
 420
 421     if (p == HOLE_ID)
 422     {
 423 #if LCD_DEPTH==1
 424         /* the bottom-right cell of the default sliding_puzzle image is
 425            an appropriate hole graphic */
 426         rb->lcd_bitmap_part(sliding_puzzle, ((p-1)%SPOTS_X)*SPOTS_WIDTH,
 427                     ((p-1)/SPOTS_X)*SPOTS_HEIGHT,
 428                     STRIDE( SCREEN_MAIN,
 429                             BMPWIDTH_sliding_puzzle, BMPHEIGHT_sliding_puzzle),
 430                     x, y, SPOTS_WIDTH, SPOTS_HEIGHT);
 431 #else
 432         /* just draw a black rectangle */
 433         int old_fg = rb->lcd_get_foreground();
 434         rb->lcd_set_foreground(LCD_BLACK);
 435         rb->lcd_fillrect(x,y,SPOTS_WIDTH,SPOTS_HEIGHT);
 436         rb->lcd_set_foreground(old_fg);
 437 #endif
 438     }
 439     else if (picmode != PICMODE_NUMERALS)
 440     {
 441         rb->lcd_bitmap_part( puzzle_bmp_ptr, ((p-1)%SPOTS_X)*SPOTS_WIDTH,
 442                      ((p-1)/SPOTS_X)*SPOTS_HEIGHT,
 443                      STRIDE( SCREEN_MAIN,
 444                              BMPWIDTH_sliding_puzzle, BMPHEIGHT_sliding_puzzle),
 445                      x, y, SPOTS_WIDTH, SPOTS_HEIGHT);
 446     } else {
 447         rb->lcd_drawrect(x, y, SPOTS_WIDTH, SPOTS_HEIGHT);
 448         rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
 449         rb->lcd_fillrect(x+1, y+1, SPOTS_WIDTH-2, SPOTS_HEIGHT-2);
 450         rb->lcd_set_drawmode(DRMODE_SOLID);
 451         rb->snprintf(s, sizeof(s), "%d", p);
 452         rb->lcd_setfont(num_font);
 453         rb->lcd_getstringsize(s, &w, &h);
 454         rb->lcd_putsxy(x + (SPOTS_WIDTH/2) - w / 2,
 455                        y + (SPOTS_HEIGHT/2) - h / 2, s);
 456     }
 457 }
 458
 459 /* check if the puzzle is solved */
 460 static bool puzzle_finished(void)
 461 {
 462     int i;
 463     for (i=0; i<NUM_SPOTS; i++)
 464     if (spots[i] != (i+1))
 465         return false;
 466     return true;
 467 }
 468
 469 /* move a piece in any direction */
 470 static void move_spot(int x, int y)
 471 {
 472     int i, w;
 473     spots[hole] = spots[hole-x-SPOTS_X*y];
 474     hole -= (x+SPOTS_X*y);
 475     moves++;
 476     rb->lcd_setfont(moves_font);
 477 #if LCD_WIDTH > LCD_HEIGHT
 478     rb->snprintf(s, sizeof(s), "%d", moves);
 479     w = rb->lcd_getstringsize(s, NULL, NULL);
 480     rb->lcd_putsxy((IMAGE_WIDTH+1+(LCD_WIDTH-IMAGE_WIDTH-1)/2) - w / 2,
 481                    moves_y, s);
 482 #else
 483     (void)w;
 484     rb->snprintf(s, sizeof(s), "Moves: %d", moves);
 485     rb->lcd_putsxy(3, moves_y, s);
 486 #endif
 487     for(i=1;i<=4;i++)
 488     {
 489        draw_spot(HOLE_ID,
 490                  (hole%SPOTS_X)*SPOTS_WIDTH,
 491                  (hole/SPOTS_X)*SPOTS_HEIGHT);
 492        draw_spot(spots[hole],
 493                  (hole%SPOTS_X)*SPOTS_WIDTH + (i*x*SPOTS_WIDTH)/5,
 494                  (hole/SPOTS_X)*SPOTS_HEIGHT + (i*y*SPOTS_HEIGHT)/5);
 495        rb->lcd_update();
 496        rb->sleep(HZ/50);
 497     }
 498     draw_spot(HOLE_ID,
 499               (hole%SPOTS_X)*SPOTS_WIDTH,
 500               (hole/SPOTS_X)*SPOTS_HEIGHT);
 501     draw_spot(spots[hole],
 502               ((hole%SPOTS_X)+x)*SPOTS_WIDTH,
 503               ((hole/SPOTS_X)+y)*SPOTS_HEIGHT);
 504     rb->lcd_update();
 505
 506     spots[hole] = HOLE_ID;
 507 }
 508
 509 static void draw_playfield(void)
 510 {
 511     int i, w;
 512
 513     rb->lcd_clear_display();
 514     rb->lcd_setfont(moves_font);
 515 #if LCD_WIDTH > LCD_HEIGHT
 516     rb->lcd_vline(IMAGE_WIDTH, 0, LCD_HEIGHT-1);
 517     w = rb->lcd_getstringsize("Moves", NULL, NULL);
 518     rb->lcd_putsxy((IMAGE_WIDTH+1+(LCD_WIDTH-IMAGE_WIDTH-1)/2) - w / 2,
 519                    10, "Moves");
 520     rb->snprintf(s, sizeof(s), "%d", moves);
 521     w = rb->lcd_getstringsize(s, NULL, NULL);
 522     rb->lcd_putsxy((IMAGE_WIDTH+1+(LCD_WIDTH-IMAGE_WIDTH-1)/2) - w / 2,
 523                    moves_y, s);
 524 #else
 525     (void)w;
 526     rb->lcd_hline(0, LCD_WIDTH-1, IMAGE_HEIGHT);
 527     rb->snprintf(s, sizeof(s), "Moves: %d", moves);
 528     rb->lcd_putsxy(3, moves_y, s);
 529 #endif
 530
 531     /* draw spots to the lcd */
 532     for (i=0; i<NUM_SPOTS; i++)
 533         draw_spot(spots[i], (i%SPOTS_X)*SPOTS_WIDTH, (i/SPOTS_X)*SPOTS_HEIGHT);
 534
 535     rb->lcd_update();
 536 }
 537
 538 /* initializes the puzzle */
 539 static void puzzle_init(void)
 540 {
 541     int i, r, temp, tsp[NUM_SPOTS];
 542
 543     moves = 0;
 544
 545     /* shuffle spots */
 546     for (i=NUM_SPOTS-1; i>=0; i--) {
 547         r = (rb->rand() % (i+1));
 548
 549         temp = spots[r];
 550         spots[r] = spots[i];
 551         spots[i] = temp;
 552
 553         if (spots[i]==HOLE_ID)
 554             hole = i;
 555     }
 556
 557     /* test if the puzzle is solvable */
 558     for (i=0; i<NUM_SPOTS; i++)
 559         tsp[i] = spots[i];
 560     r=0;
 561
 562     /* First, check if the problem has even or odd parity,
 563        depending on where the empty square is */
 564     if ((((SPOTS_X-1)-hole%SPOTS_X) + ((SPOTS_Y-1)-hole/SPOTS_X))%2 == 1)
 565         ++r;
 566
 567     /* Now check how many swaps we need to solve it */
 568     for (i=0; i<NUM_SPOTS-1; i++) {
 569         while (tsp[i] != (i+1)) {
 570             temp = tsp[i];
 571             tsp[i] = tsp[temp-1];
 572             tsp[temp-1] = temp;
 573             ++r;
 574         }
 575     }
 576
 577     /* if the random puzzle isn't solvable just change two spots */
 578     if (r%2 == 1) {
 579         if (spots[0]!=HOLE_ID && spots[1]!=HOLE_ID) {
 580             temp = spots[0];
 581             spots[0] = spots[1];
 582             spots[1] = temp;
 583         } else {
 584             temp = spots[2];
 585             spots[2] = spots[3];
 586             spots[3] = temp;
 587         }
 588     }
 589
 590     draw_playfield();
 591 }
 592
 593 /* the main game loop */
 594 static int puzzle_loop(void)
 595 {
 596     int button;
 597     int lastbutton = BUTTON_NONE;
 598     bool load_success;
 599
 600     puzzle_init();
 601     while(true) {
 602         button = rb->button_get(true);
 603         switch (button) {
 604 #ifdef PUZZLE_RC_QUIT
 605             case PUZZLE_RC_QUIT:
 606 #endif
 607             case PUZZLE_QUIT:
 608                 /* get out of here */
 609                 return PLUGIN_OK;
 610
 611             case PUZZLE_SHUFFLE:
 612 #ifdef PUZZLE_SHUFFLE_PICTURE_PRE
 613                 if (lastbutton != PUZZLE_SHUFFLE_PICTURE_PRE)
 614                     break;
 615 #endif
 616                 /* mix up the pieces */
 617                 puzzle_init();
 618                 break;
 619
 620             case PUZZLE_PICTURE:
 621 #ifdef PUZZLE_SHUFFLE_PICTURE_PRE
 622                 if (lastbutton != PUZZLE_SHUFFLE_PICTURE_PRE)
 623                     break;
 624 #endif
 625                 /* change picture */
 626                 picmode = (picmode+1)%PICMODE_LAST_XXX;
 627
 628                 /* if load_resize_bitmap fails to load bitmap, try next picmode
 629                 */
 630                 do
 631                 {
 632                     load_success = load_resize_bitmap();
 633                     if( !load_success )
 634                         picmode = (picmode+1)%PICMODE_LAST_XXX;
 635                 }
 636                 while( !load_success );
 637
 638                 /* tell the user what mode we picked in the end! */
 639                 rb->splash(HZ,picmode_descriptions[ picmode ] );
 640                 draw_playfield();
 641                 break;
 642
 643             case PUZZLE_LEFT:
 644                 if ((hole%SPOTS_X)<(SPOTS_X-1) && !puzzle_finished())
 645                     move_spot(-1, 0);
 646                 break;
 647
 648             case PUZZLE_RIGHT:
 649                 if ((hole%SPOTS_X)>0 && !puzzle_finished())
 650                     move_spot(1, 0);
 651                 break;
 652
 653             case PUZZLE_UP:
 654                 if ((hole/SPOTS_X)<(SPOTS_Y-1) && !puzzle_finished())
 655                     move_spot(0, -1);
 656                 break;
 657
 658             case PUZZLE_DOWN:
 659                 if ((hole/SPOTS_X)>0 && !puzzle_finished())
 660                     move_spot(0, 1);
 661                 break;
 662
 663             default:
 664                 if (rb->default_event_handler(button) == SYS_USB_CONNECTED)
 665                     return PLUGIN_USB_CONNECTED;
 666                 break;
 667         }
 668         if (button != BUTTON_NONE)
 669             lastbutton = button;
 670     }
 671 }
 672
 673 enum plugin_status plugin_start(
 674                                 const void* parameter)
 675 {
 676     int i, w, h;
 677
 678     initial_bmp_path=(const char *)parameter;
 679     img_buf = rb->plugin_get_buffer(&img_buf_len);
 680     picmode = PICMODE_INITIAL_PICTURE;
 681     img_buf_path[0] = '\0';
 682
 683     /* If launched as a viewer, just go straight to the game without
 684        bothering with the splash or instructions page */
 685     if(parameter==NULL)
 686     {
 687         /* if not launched as a viewer, use default puzzle, and show help */
 688         picmode = PICMODE_DEFAULT_PICTURE;
 689
 690         /* print title */
 691         rb->lcd_getstringsize((unsigned char *)"Sliding Puzzle", &w, &h);
 692         w = (w+1)/2;
 693         h = (h+1)/2;
 694         rb->lcd_clear_display();
 695         rb->lcd_putsxy(LCD_WIDTH/2-w, (LCD_HEIGHT/2)-h,
 696                        (unsigned char *)"Sliding Puzzle");
 697         rb->lcd_update();
 698         rb->sleep(HZ);
 699
 700         /* print instructions */
 701         rb->lcd_clear_display();
 702         rb->lcd_setfont(FONT_SYSFIXED);
 703 #if CONFIG_KEYPAD == RECORDER_PAD || CONFIG_KEYPAD == ARCHOS_AV300_PAD
 704         rb->lcd_putsxy(3, 18, "[OFF] to stop");
 705         rb->lcd_putsxy(3, 28, "[F1] shuffle");
 706         rb->lcd_putsxy(3, 38, "[F2] change pic");
 707 #elif CONFIG_KEYPAD == ONDIO_PAD
 708         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 709         rb->lcd_putsxy(0, 28, "[MODE..] shuffle");
 710         rb->lcd_putsxy(0, 38, "[MODE] change pic");
 711 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
 712       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
 713       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
 714         rb->lcd_putsxy(0, 18, "[S-MENU] to stop");
 715         rb->lcd_putsxy(0, 28, "[S-LEFT] shuffle");
 716         rb->lcd_putsxy(0, 38, "[S-RIGHT] change pic");
 717 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
 718       (CONFIG_KEYPAD == IRIVER_H300_PAD)
 719         rb->lcd_putsxy(0, 18, "[STOP] to stop");
 720         rb->lcd_putsxy(0, 28, "[SELECT] shuffle");
 721         rb->lcd_putsxy(0, 38, "[PLAY] change pic");
 722 #elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
 723         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 724         rb->lcd_putsxy(0, 28, "[REC] shuffle");
 725         rb->lcd_putsxy(0, 38, "[PLAY] change pic");
 726 #elif CONFIG_KEYPAD == GIGABEAT_PAD
 727         rb->lcd_putsxy(0, 18, "[POWER] to stop");
 728         rb->lcd_putsxy(0, 28, "[SELECT] shuffle");
 729         rb->lcd_putsxy(0, 38, "[A] change pic");
 730 #elif (CONFIG_KEYPAD == SANSA_E200_PAD) || \
 731       (CONFIG_KEYPAD == SANSA_C200_PAD)
 732         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 733         rb->lcd_putsxy(0, 28, "[REC] shuffle");
 734         rb->lcd_putsxy(0, 38, "[SELECT] change pic");
 735 #elif CONFIG_KEYPAD == IRIVER_H10_PAD
 736         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 737         rb->lcd_putsxy(0, 28, "[REW] shuffle");
 738         rb->lcd_putsxy(0, 38, "[PLAY] change pic");
 739 #elif CONFIG_KEYPAD == GIGABEAT_S_PAD
 740         rb->lcd_putsxy(0, 18, "[BACK] to stop");
 741         rb->lcd_putsxy(0, 28, "[SELECT] shuffle");
 742         rb->lcd_putsxy(0, 38, "[MENU] change pic");
 743 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
 744         rb->lcd_putsxy(0, 18, "[REC] to stop");
 745         rb->lcd_putsxy(0, 28, "[MODE] shuffle");
 746         rb->lcd_putsxy(0, 38, "[MENU] change pic");
 747 #endif
 748 #ifdef HAVE_TOUCHSCREEN
 749         rb->lcd_putsxy(0, 18, PUZZLE_QUIT_TEXT " to stop");
 750         rb->lcd_putsxy(0, 28, PUZZLE_SHUFFLE_TEXT " shuffle");
 751         rb->lcd_putsxy(0, 38, PUZZLE_PICTURE_TEXT " change pic");
 752 #endif
 753 #ifdef HAVE_ALBUMART
 754         rb->lcd_putsxy(0,48,"    pic->albumart->num");
 755 #else
 756         rb->lcd_putsxy(0,48,"    pic<->num");
 757 #endif
 758         rb->lcd_update();
 759         rb->button_get_w_tmo(HZ*2);
 760     }
 761
 762     hole = INITIAL_HOLE;
 763
 764     if( !load_resize_bitmap() )
 765     {
 766         rb->lcd_clear_display();
 767         rb->splash(HZ*2,"Failed to load bitmap!");
 768         return PLUGIN_OK;
 769     }
 770
 771     /* Calculate possible font sizes and text positions */
 772     rb->lcd_setfont(FONT_UI);
 773     rb->lcd_getstringsize("15", &w, &h);
 774     if ((w > (SPOTS_WIDTH-2)) || (h > (SPOTS_HEIGHT-2)))
 775         num_font = FONT_SYSFIXED;
 776
 777 #if LCD_WIDTH > LCD_HEIGHT
 778     rb->lcd_getstringsize("Moves", &w, &h);
 779     if (w > (LCD_WIDTH-IMAGE_WIDTH-1))
 780         moves_font = FONT_SYSFIXED;
 781     rb->lcd_setfont(moves_font);
 782     rb->lcd_getstringsize("Moves", &w, &h);
 783     moves_y = 10 + h;
 784 #else
 785     rb->lcd_getstringsize("Moves: 999", &w, &h);
 786     if ((w > LCD_WIDTH) || (h > (LCD_HEIGHT-IMAGE_HEIGHT-1)))
 787         moves_font = FONT_SYSFIXED;
 788     rb->lcd_setfont(moves_font);
 789     rb->lcd_getstringsize("Moves: 999", &w, &h);
 790     moves_y = (IMAGE_HEIGHT+1+(LCD_HEIGHT-IMAGE_HEIGHT-1)/2) - h / 2;
 791 #endif
 792     for (i=0; i<NUM_SPOTS; i++)
 793         spots[i]=(i+1);
 794
 795 #ifdef HAVE_LCD_COLOR
 796     rb->lcd_set_background(LCD_BLACK);
 797     rb->lcd_set_foreground(LCD_WHITE);
 798     rb->lcd_set_backdrop(NULL);
 799 #elif LCD_DEPTH > 1
 800     rb->lcd_set_background(LCD_WHITE);
 801     rb->lcd_set_foreground(LCD_BLACK);
 802     rb->lcd_set_backdrop(NULL);
 803 #endif
 804
 805     draw_playfield();
 806     rb->sleep(HZ*2);
 807
 808     return puzzle_loop();
 809 }
 810
 811 #endif