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 #else
 216 #error No keymap defined!
 217 #endif
 218
 219 #ifdef HAVE_TOUCHSCREEN
 220 #ifndef PUZZLE_QUIT
 221 #define PUZZLE_QUIT    BUTTON_TOPLEFT
 222 #endif
 223 #ifndef PUZZLE_LEFT
 224 #define PUZZLE_LEFT    BUTTON_MIDLEFT
 225 #endif
 226 #ifndef PUZZLE_RIGHT
 227 #define PUZZLE_RIGHT   BUTTON_MIDRIGHT
 228 #endif
 229 #ifndef PUZZLE_UP
 230 #define PUZZLE_UP      BUTTON_TOPMIDDLE
 231 #endif
 232 #ifndef PUZZLE_DOWN
 233 #define PUZZLE_DOWN    BUTTON_BOTTOMMIDDLE
 234 #endif
 235 #ifndef PUZZLE_SHUFFLE
 236 #define PUZZLE_SHUFFLE BUTTON_BOTTOMLEFT
 237 #endif
 238 #ifndef PUZZLE_PICTURE
 239 #define PUZZLE_PICTURE BUTTON_CENTER
 240 #endif
 241 #ifndef PUZZLE_QUIT_TEXT
 242 #define PUZZLE_QUIT_TEXT "[TOPLEFT]"
 243 #endif
 244 #ifndef PUZZLE_SHUFFLE_TEXT
 245 #define PUZZLE_SHUFFLE_TEXT "[BOTTOMLEFT]"
 246 #endif
 247 #ifndef PUZZLE_PICTURE_TEXT
 248 #define PUZZLE_PICTURE_TEXT "[CENTER]"
 249 #endif
 250 #endif
 251
 252 #ifdef HAVE_ALBUMART
 253 #include "lib/read_image.h"
 254 #define READ_IMAGE read_image_file
 255 #else
 256 #define READ_IMAGE rb->read_bmp_file
 257 #endif
 258
 259 #include "pluginbitmaps/sliding_puzzle.h"
 260 #define IMAGE_WIDTH BMPWIDTH_sliding_puzzle
 261 #define IMAGE_HEIGHT BMPHEIGHT_sliding_puzzle
 262 #define IMAGE_SIZE IMAGE_WIDTH
 263
 264 /* use a square image, (the default Archos bitmap looks square on its display)
 265    Puzzle image dimension is min(lcd_height,lcd_width)
 266    4x4 is more convenient for square puzzles
 267    Note: sliding_puzzle.bmp should be evenly divisible by SPOTS_X
 268    and SPOTS_Y, otherwise lcd_bitmap_part stride won't be correct */
 269 #define SPOTS_X 4
 270 #define SPOTS_Y 4
 271 #define SPOTS_WIDTH  (IMAGE_WIDTH / SPOTS_X)
 272 #define SPOTS_HEIGHT (IMAGE_HEIGHT / SPOTS_Y)
 273 #define NUM_SPOTS    (SPOTS_X*SPOTS_Y)
 274 #define HOLE_ID      (NUM_SPOTS)
 275 #define INITIAL_HOLE (HOLE_ID-1)
 276
 277 enum picmodes
 278 {
 279     PICMODE_NUMERALS = 0,
 280     PICMODE_INITIAL_PICTURE,
 281     PICMODE_DEFAULT_PICTURE,
 282 #ifdef HAVE_ALBUMART
 283     PICMODE_ALBUM_ART,
 284 #endif
 285 //    PICMODE_RANDOM,
 286     PICMODE_LAST_XXX /* placeholder */
 287 };
 288
 289 static const char* const picmode_descriptions[] = {
 290     "Numerals",
 291     "Viewer Picture",
 292     "Default Picture",
 293 #ifdef HAVE_ALBUMART
 294     "Album Art",
 295 #endif
 296     "Shouldn't Get Here",
 297 };
 298
 299 static int spots[NUM_SPOTS];
 300 static int hole = INITIAL_HOLE, moves;
 301 static unsigned char s[32];
 302 static enum picmodes picmode = PICMODE_INITIAL_PICTURE;
 303 static int num_font = FONT_UI;
 304 static int moves_font = FONT_UI;
 305 static int moves_y = 0;
 306
 307 static unsigned char *img_buf;
 308 static size_t img_buf_len;
 309 #ifdef HAVE_ALBUMART
 310 static char albumart_path[MAX_PATH+1];
 311 #endif
 312 static char img_buf_path[MAX_PATH+1];
 313
 314 static const fb_data * puzzle_bmp_ptr;
 315 /* initial_bmp_path points to selected bitmap if this game is launched
 316    as a viewer for a .bmp file, or NULL if game is launched regular way */
 317 static const char * initial_bmp_path=NULL;
 318
 319 #ifdef HAVE_ALBUMART
 320 const char * get_albumart_bmp_path(void)
 321 {
 322     struct mp3entry* track = rb->audio_current_track();
 323
 324     if (!track || !track->path || track->path[0] == '\0')
 325         return NULL;
 326
 327     if (!rb->search_albumart_files(track, "", albumart_path, MAX_PATH ) )
 328         return NULL;
 329
 330     albumart_path[ MAX_PATH ] = '\0';
 331     return albumart_path;
 332 }
 333 #endif
 334
 335 const char * get_random_bmp_path(void)
 336 {
 337     return(initial_bmp_path);
 338 }
 339
 340 static bool load_resize_bitmap(void)
 341 {
 342     int rc;
 343     const char * filename = NULL;
 344
 345     /* initially assume using the built-in default */
 346     puzzle_bmp_ptr = sliding_puzzle;
 347
 348     switch( picmode ){
 349         /* some modes don't even need to touch disk and trivially succeed */
 350         case PICMODE_NUMERALS:
 351         case PICMODE_DEFAULT_PICTURE:
 352         default:
 353             return(true);
 354
 355 #ifdef HAVE_ALBUMART
 356         case PICMODE_ALBUM_ART:
 357             filename = get_albumart_bmp_path();
 358             break;
 359 #endif
 360 /*
 361         case PICMODE_RANDOM:
 362             if(NULL == (filename=get_random_bmp_path()) )
 363                 filename = initial_bmp_path;
 364             break;
 365 */
 366         case PICMODE_INITIAL_PICTURE:
 367             filename = initial_bmp_path;
 368             break;
 369     };
 370
 371     if( filename != NULL )
 372     {
 373         /* if we already loaded image before, don't touch disk */
 374         if( 0 == rb->strcmp( filename, img_buf_path ) )
 375         {
 376             puzzle_bmp_ptr = (const fb_data *)img_buf;
 377             return true;
 378         }
 379
 380         struct bitmap main_bitmap;
 381         rb->memset(&main_bitmap,0,sizeof(struct bitmap));
 382         main_bitmap.data = img_buf;
 383
 384         main_bitmap.width = IMAGE_WIDTH;
 385         main_bitmap.height = IMAGE_HEIGHT;
 386
 387         rc = READ_IMAGE( filename, &main_bitmap,
 388                          img_buf_len,
 389                          FORMAT_NATIVE|FORMAT_RESIZE|FORMAT_DITHER,
 390                          NULL);
 391         if( rc > 0 )
 392         {
 393             puzzle_bmp_ptr = (const fb_data *)img_buf;
 394             rb->strcpy( img_buf_path, filename );
 395             return true;
 396         }
 397     }
 398
 399     /* something must have failed. get_albumart_bmp_path could return
 400        NULL if albumart doesn't exist or couldn't be loaded, or
 401        read_bmp_file could have failed.  return false and caller should
 402        try the next mode (PICMODE_DEFAULT_PICTURE and PICMODE_NUMERALS will
 403        always succeed) */
 404     return false;
 405 }
 406
 407 /* draws a spot at the coordinates (x,y), range of p is 1-20 */
 408 static void draw_spot(int p, int x, int y)
 409 {
 410     int w, h;
 411
 412     if (p == HOLE_ID)
 413     {
 414 #if LCD_DEPTH==1
 415         /* the bottom-right cell of the default sliding_puzzle image is
 416            an appropriate hole graphic */
 417         rb->lcd_bitmap_part(sliding_puzzle, ((p-1)%SPOTS_X)*SPOTS_WIDTH,
 418                     ((p-1)/SPOTS_X)*SPOTS_HEIGHT,
 419                     STRIDE( SCREEN_MAIN,
 420                             BMPWIDTH_sliding_puzzle, BMPHEIGHT_sliding_puzzle),
 421                     x, y, SPOTS_WIDTH, SPOTS_HEIGHT);
 422 #else
 423         /* just draw a black rectangle */
 424         int old_fg = rb->lcd_get_foreground();
 425         rb->lcd_set_foreground(LCD_BLACK);
 426         rb->lcd_fillrect(x,y,SPOTS_WIDTH,SPOTS_HEIGHT);
 427         rb->lcd_set_foreground(old_fg);
 428 #endif
 429     }
 430     else if (picmode != PICMODE_NUMERALS)
 431     {
 432         rb->lcd_bitmap_part( puzzle_bmp_ptr, ((p-1)%SPOTS_X)*SPOTS_WIDTH,
 433                      ((p-1)/SPOTS_X)*SPOTS_HEIGHT,
 434                      STRIDE( SCREEN_MAIN,
 435                              BMPWIDTH_sliding_puzzle, BMPHEIGHT_sliding_puzzle),
 436                      x, y, SPOTS_WIDTH, SPOTS_HEIGHT);
 437     } else {
 438         rb->lcd_drawrect(x, y, SPOTS_WIDTH, SPOTS_HEIGHT);
 439         rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
 440         rb->lcd_fillrect(x+1, y+1, SPOTS_WIDTH-2, SPOTS_HEIGHT-2);
 441         rb->lcd_set_drawmode(DRMODE_SOLID);
 442         rb->snprintf(s, sizeof(s), "%d", p);
 443         rb->lcd_setfont(num_font);
 444         rb->lcd_getstringsize(s, &w, &h);
 445         rb->lcd_putsxy(x + (SPOTS_WIDTH/2) - w / 2,
 446                        y + (SPOTS_HEIGHT/2) - h / 2, s);
 447     }
 448 }
 449
 450 /* check if the puzzle is solved */
 451 static bool puzzle_finished(void)
 452 {
 453     int i;
 454     for (i=0; i<NUM_SPOTS; i++)
 455     if (spots[i] != (i+1))
 456         return false;
 457     return true;
 458 }
 459
 460 /* move a piece in any direction */
 461 static void move_spot(int x, int y)
 462 {
 463     int i, w;
 464     spots[hole] = spots[hole-x-SPOTS_X*y];
 465     hole -= (x+SPOTS_X*y);
 466     moves++;
 467     rb->lcd_setfont(moves_font);
 468 #if LCD_WIDTH > LCD_HEIGHT
 469     rb->snprintf(s, sizeof(s), "%d", moves);
 470     w = rb->lcd_getstringsize(s, NULL, NULL);
 471     rb->lcd_putsxy((IMAGE_WIDTH+1+(LCD_WIDTH-IMAGE_WIDTH-1)/2) - w / 2,
 472                    moves_y, s);
 473 #else
 474     (void)w;
 475     rb->snprintf(s, sizeof(s), "Moves: %d", moves);
 476     rb->lcd_putsxy(3, moves_y, s);
 477 #endif
 478     for(i=1;i<=4;i++)
 479     {
 480        draw_spot(HOLE_ID,
 481                  (hole%SPOTS_X)*SPOTS_WIDTH,
 482                  (hole/SPOTS_X)*SPOTS_HEIGHT);
 483        draw_spot(spots[hole],
 484                  (hole%SPOTS_X)*SPOTS_WIDTH + (i*x*SPOTS_WIDTH)/5,
 485                  (hole/SPOTS_X)*SPOTS_HEIGHT + (i*y*SPOTS_HEIGHT)/5);
 486        rb->lcd_update();
 487        rb->sleep(HZ/50);
 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)+x)*SPOTS_WIDTH,
 494               ((hole/SPOTS_X)+y)*SPOTS_HEIGHT);
 495     rb->lcd_update();
 496
 497     spots[hole] = HOLE_ID;
 498 }
 499
 500 static void draw_playfield(void)
 501 {
 502     int i, w;
 503
 504     rb->lcd_clear_display();
 505     rb->lcd_setfont(moves_font);
 506 #if LCD_WIDTH > LCD_HEIGHT
 507     rb->lcd_vline(IMAGE_WIDTH, 0, LCD_HEIGHT-1);
 508     w = rb->lcd_getstringsize("Moves", NULL, NULL);
 509     rb->lcd_putsxy((IMAGE_WIDTH+1+(LCD_WIDTH-IMAGE_WIDTH-1)/2) - w / 2,
 510                    10, "Moves");
 511     rb->snprintf(s, sizeof(s), "%d", moves);
 512     w = rb->lcd_getstringsize(s, NULL, NULL);
 513     rb->lcd_putsxy((IMAGE_WIDTH+1+(LCD_WIDTH-IMAGE_WIDTH-1)/2) - w / 2,
 514                    moves_y, s);
 515 #else
 516     (void)w;
 517     rb->lcd_hline(0, LCD_WIDTH-1, IMAGE_HEIGHT);
 518     rb->snprintf(s, sizeof(s), "Moves: %d", moves);
 519     rb->lcd_putsxy(3, moves_y, s);
 520 #endif
 521
 522     /* draw spots to the lcd */
 523     for (i=0; i<NUM_SPOTS; i++)
 524         draw_spot(spots[i], (i%SPOTS_X)*SPOTS_WIDTH, (i/SPOTS_X)*SPOTS_HEIGHT);
 525
 526     rb->lcd_update();
 527 }
 528
 529 /* initializes the puzzle */
 530 static void puzzle_init(void)
 531 {
 532     int i, r, temp, tsp[NUM_SPOTS];
 533
 534     moves = 0;
 535
 536     /* shuffle spots */
 537     for (i=NUM_SPOTS-1; i>=0; i--) {
 538         r = (rb->rand() % (i+1));
 539
 540         temp = spots[r];
 541         spots[r] = spots[i];
 542         spots[i] = temp;
 543
 544         if (spots[i]==HOLE_ID)
 545             hole = i;
 546     }
 547
 548     /* test if the puzzle is solvable */
 549     for (i=0; i<NUM_SPOTS; i++)
 550         tsp[i] = spots[i];
 551     r=0;
 552
 553     /* First, check if the problem has even or odd parity,
 554        depending on where the empty square is */
 555     if ((((SPOTS_X-1)-hole%SPOTS_X) + ((SPOTS_Y-1)-hole/SPOTS_X))%2 == 1)
 556         ++r;
 557
 558     /* Now check how many swaps we need to solve it */
 559     for (i=0; i<NUM_SPOTS-1; i++) {
 560         while (tsp[i] != (i+1)) {
 561             temp = tsp[i];
 562             tsp[i] = tsp[temp-1];
 563             tsp[temp-1] = temp;
 564             ++r;
 565         }
 566     }
 567
 568     /* if the random puzzle isn't solvable just change two spots */
 569     if (r%2 == 1) {
 570         if (spots[0]!=HOLE_ID && spots[1]!=HOLE_ID) {
 571             temp = spots[0];
 572             spots[0] = spots[1];
 573             spots[1] = temp;
 574         } else {
 575             temp = spots[2];
 576             spots[2] = spots[3];
 577             spots[3] = temp;
 578         }
 579     }
 580
 581     draw_playfield();
 582 }
 583
 584 /* the main game loop */
 585 static int puzzle_loop(void)
 586 {
 587     int button;
 588     int lastbutton = BUTTON_NONE;
 589     bool load_success;
 590
 591     puzzle_init();
 592     while(true) {
 593         button = rb->button_get(true);
 594         switch (button) {
 595 #ifdef PUZZLE_RC_QUIT
 596             case PUZZLE_RC_QUIT:
 597 #endif
 598             case PUZZLE_QUIT:
 599                 /* get out of here */
 600                 return PLUGIN_OK;
 601
 602             case PUZZLE_SHUFFLE:
 603 #ifdef PUZZLE_SHUFFLE_PICTURE_PRE
 604                 if (lastbutton != PUZZLE_SHUFFLE_PICTURE_PRE)
 605                     break;
 606 #endif
 607                 /* mix up the pieces */
 608                 puzzle_init();
 609                 break;
 610
 611             case PUZZLE_PICTURE:
 612 #ifdef PUZZLE_SHUFFLE_PICTURE_PRE
 613                 if (lastbutton != PUZZLE_SHUFFLE_PICTURE_PRE)
 614                     break;
 615 #endif
 616                 /* change picture */
 617                 picmode = (picmode+1)%PICMODE_LAST_XXX;
 618
 619                 /* if load_resize_bitmap fails to load bitmap, try next picmode
 620                 */
 621                 do
 622                 {
 623                     load_success = load_resize_bitmap();
 624                     if( !load_success )
 625                         picmode = (picmode+1)%PICMODE_LAST_XXX;
 626                 }
 627                 while( !load_success );
 628
 629                 /* tell the user what mode we picked in the end! */
 630                 rb->splash(HZ,picmode_descriptions[ picmode ] );
 631                 draw_playfield();
 632                 break;
 633
 634             case PUZZLE_LEFT:
 635                 if ((hole%SPOTS_X)<(SPOTS_X-1) && !puzzle_finished())
 636                     move_spot(-1, 0);
 637                 break;
 638
 639             case PUZZLE_RIGHT:
 640                 if ((hole%SPOTS_X)>0 && !puzzle_finished())
 641                     move_spot(1, 0);
 642                 break;
 643
 644             case PUZZLE_UP:
 645                 if ((hole/SPOTS_X)<(SPOTS_Y-1) && !puzzle_finished())
 646                     move_spot(0, -1);
 647                 break;
 648
 649             case PUZZLE_DOWN:
 650                 if ((hole/SPOTS_X)>0 && !puzzle_finished())
 651                     move_spot(0, 1);
 652                 break;
 653
 654             default:
 655                 if (rb->default_event_handler(button) == SYS_USB_CONNECTED)
 656                     return PLUGIN_USB_CONNECTED;
 657                 break;
 658         }
 659         if (button != BUTTON_NONE)
 660             lastbutton = button;
 661     }
 662 }
 663
 664 enum plugin_status plugin_start(
 665                                 const void* parameter)
 666 {
 667     int i, w, h;
 668
 669     initial_bmp_path=(const char *)parameter;
 670     img_buf = rb->plugin_get_buffer(&img_buf_len);
 671     picmode = PICMODE_INITIAL_PICTURE;
 672     img_buf_path[0] = '\0';
 673
 674     /* If launched as a viewer, just go straight to the game without
 675        bothering with the splash or instructions page */
 676     if(parameter==NULL)
 677     {
 678         /* if not launched as a viewer, use default puzzle, and show help */
 679         picmode = PICMODE_DEFAULT_PICTURE;
 680
 681         /* print title */
 682         rb->lcd_getstringsize((unsigned char *)"Sliding Puzzle", &w, &h);
 683         w = (w+1)/2;
 684         h = (h+1)/2;
 685         rb->lcd_clear_display();
 686         rb->lcd_putsxy(LCD_WIDTH/2-w, (LCD_HEIGHT/2)-h,
 687                        (unsigned char *)"Sliding Puzzle");
 688         rb->lcd_update();
 689         rb->sleep(HZ);
 690
 691         /* print instructions */
 692         rb->lcd_clear_display();
 693         rb->lcd_setfont(FONT_SYSFIXED);
 694 #if CONFIG_KEYPAD == RECORDER_PAD || CONFIG_KEYPAD == ARCHOS_AV300_PAD
 695         rb->lcd_putsxy(3, 18, "[OFF] to stop");
 696         rb->lcd_putsxy(3, 28, "[F1] shuffle");
 697         rb->lcd_putsxy(3, 38, "[F2] change pic");
 698 #elif CONFIG_KEYPAD == ONDIO_PAD
 699         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 700         rb->lcd_putsxy(0, 28, "[MODE..] shuffle");
 701         rb->lcd_putsxy(0, 38, "[MODE] change pic");
 702 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
 703       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
 704       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
 705         rb->lcd_putsxy(0, 18, "[S-MENU] to stop");
 706         rb->lcd_putsxy(0, 28, "[S-LEFT] shuffle");
 707         rb->lcd_putsxy(0, 38, "[S-RIGHT] change pic");
 708 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
 709       (CONFIG_KEYPAD == IRIVER_H300_PAD)
 710         rb->lcd_putsxy(0, 18, "[STOP] to stop");
 711         rb->lcd_putsxy(0, 28, "[SELECT] shuffle");
 712         rb->lcd_putsxy(0, 38, "[PLAY] change pic");
 713 #elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
 714         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 715         rb->lcd_putsxy(0, 28, "[REC] shuffle");
 716         rb->lcd_putsxy(0, 38, "[PLAY] change pic");
 717 #elif CONFIG_KEYPAD == GIGABEAT_PAD
 718         rb->lcd_putsxy(0, 18, "[POWER] to stop");
 719         rb->lcd_putsxy(0, 28, "[SELECT] shuffle");
 720         rb->lcd_putsxy(0, 38, "[A] change pic");
 721 #elif (CONFIG_KEYPAD == SANSA_E200_PAD) || \
 722       (CONFIG_KEYPAD == SANSA_C200_PAD)
 723         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 724         rb->lcd_putsxy(0, 28, "[REC] shuffle");
 725         rb->lcd_putsxy(0, 38, "[SELECT] change pic");
 726 #elif CONFIG_KEYPAD == IRIVER_H10_PAD
 727         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 728         rb->lcd_putsxy(0, 28, "[REW] shuffle");
 729         rb->lcd_putsxy(0, 38, "[PLAY] change pic");
 730 #elif CONFIG_KEYPAD == GIGABEAT_S_PAD
 731         rb->lcd_putsxy(0, 18, "[BACK] to stop");
 732         rb->lcd_putsxy(0, 28, "[SELECT] shuffle");
 733         rb->lcd_putsxy(0, 38, "[MENU] change pic");
 734 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
 735         rb->lcd_putsxy(0, 18, "[REC] to stop");
 736         rb->lcd_putsxy(0, 28, "[MODE] shuffle");
 737         rb->lcd_putsxy(0, 38, "[MENU] change pic");
 738 #endif
 739 #ifdef HAVE_TOUCHSCREEN
 740         rb->lcd_putsxy(0, 18, PUZZLE_QUIT_TEXT " to stop");
 741         rb->lcd_putsxy(0, 28, PUZZLE_SHUFFLE_TEXT " shuffle");
 742         rb->lcd_putsxy(0, 38, PUZZLE_PICTURE_TEXT " change pic");
 743 #endif
 744 #ifdef HAVE_ALBUMART
 745         rb->lcd_putsxy(0,48,"    pic->albumart->num");
 746 #else
 747         rb->lcd_putsxy(0,48,"    pic<->num");
 748 #endif
 749         rb->lcd_update();
 750         rb->button_get_w_tmo(HZ*2);
 751     }
 752
 753     hole = INITIAL_HOLE;
 754
 755     if( !load_resize_bitmap() )
 756     {
 757         rb->lcd_clear_display();
 758         rb->splash(HZ*2,"Failed to load bitmap!");
 759         return PLUGIN_OK;
 760     }
 761
 762     /* Calculate possible font sizes and text positions */
 763     rb->lcd_setfont(FONT_UI);
 764     rb->lcd_getstringsize("15", &w, &h);
 765     if ((w > (SPOTS_WIDTH-2)) || (h > (SPOTS_HEIGHT-2)))
 766         num_font = FONT_SYSFIXED;
 767
 768 #if LCD_WIDTH > LCD_HEIGHT
 769     rb->lcd_getstringsize("Moves", &w, &h);
 770     if (w > (LCD_WIDTH-IMAGE_WIDTH-1))
 771         moves_font = FONT_SYSFIXED;
 772     rb->lcd_setfont(moves_font);
 773     rb->lcd_getstringsize("Moves", &w, &h);
 774     moves_y = 10 + h;
 775 #else
 776     rb->lcd_getstringsize("Moves: 999", &w, &h);
 777     if ((w > LCD_WIDTH) || (h > (LCD_HEIGHT-IMAGE_HEIGHT-1)))
 778         moves_font = FONT_SYSFIXED;
 779     rb->lcd_setfont(moves_font);
 780     rb->lcd_getstringsize("Moves: 999", &w, &h);
 781     moves_y = (IMAGE_HEIGHT+1+(LCD_HEIGHT-IMAGE_HEIGHT-1)/2) - h / 2;
 782 #endif
 783     for (i=0; i<NUM_SPOTS; i++)
 784         spots[i]=(i+1);
 785
 786 #ifdef HAVE_LCD_COLOR
 787     rb->lcd_set_background(LCD_BLACK);
 788     rb->lcd_set_foreground(LCD_WHITE);
 789     rb->lcd_set_backdrop(NULL);
 790 #elif LCD_DEPTH > 1
 791     rb->lcd_set_background(LCD_WHITE);
 792     rb->lcd_set_foreground(LCD_BLACK);
 793     rb->lcd_set_backdrop(NULL);
 794 #endif
 795
 796     draw_playfield();
 797     rb->sleep(HZ*2);
 798
 799     return puzzle_loop();
 800 }
 801
 802 #endif