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 == COWOND2_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 == ONDAVX747_PAD) || CONFIG_KEYPAD == MROBE500_PAD
 192 #define PUZZLE_QUIT BUTTON_POWER
 193 #define PUZZLE_QUIT_TEXT "[POWER]"
 194
 195 #elif (CONFIG_KEYPAD == SAMSUNG_YH_PAD)
 196 #define PUZZLE_QUIT    BUTTON_REC
 197 #define PUZZLE_LEFT    BUTTON_LEFT
 198 #define PUZZLE_RIGHT   BUTTON_RIGHT
 199 #define PUZZLE_UP      BUTTON_UP
 200 #define PUZZLE_DOWN    BUTTON_DOWN
 201 #define PUZZLE_SHUFFLE BUTTON_REW
 202 #define PUZZLE_PICTURE BUTTON_PLAY
 203
 204 #else
 205 #error No keymap defined!
 206 #endif
 207
 208 #ifdef HAVE_TOUCHSCREEN
 209 #ifndef PUZZLE_QUIT
 210 #define PUZZLE_QUIT    BUTTON_TOPLEFT
 211 #endif
 212 #ifndef PUZZLE_LEFT
 213 #define PUZZLE_LEFT    BUTTON_MIDLEFT
 214 #endif
 215 #ifndef PUZZLE_RIGHT
 216 #define PUZZLE_RIGHT   BUTTON_MIDRIGHT
 217 #endif
 218 #ifndef PUZZLE_UP
 219 #define PUZZLE_UP      BUTTON_TOPMIDDLE
 220 #endif
 221 #ifndef PUZZLE_DOWN
 222 #define PUZZLE_DOWN    BUTTON_BOTTOMMIDDLE
 223 #endif
 224 #ifndef PUZZLE_SHUFFLE
 225 #define PUZZLE_SHUFFLE BUTTON_BOTTOMLEFT
 226 #endif
 227 #ifndef PUZZLE_PICTURE
 228 #define PUZZLE_PICTURE BUTTON_CENTER
 229 #endif
 230 #ifndef PUZZLE_QUIT_TEXT
 231 #define PUZZLE_QUIT_TEXT "[TOPLEFT]"
 232 #endif
 233 #ifndef PUZZLE_SHUFFLE_TEXT
 234 #define PUZZLE_SHUFFLE_TEXT "[BOTTOMLEFT]"
 235 #endif
 236 #ifndef PUZZLE_PICTURE_TEXT
 237 #define PUZZLE_PICTURE_TEXT "[CENTER]"
 238 #endif
 239 #endif
 240
 241 #ifdef HAVE_ALBUMART
 242 #include "lib/read_image.h"
 243 #define READ_IMAGE read_image_file
 244 #else
 245 #define READ_IMAGE rb->read_bmp_file
 246 #endif
 247
 248 #include "pluginbitmaps/sliding_puzzle.h"
 249 #define IMAGE_WIDTH BMPWIDTH_sliding_puzzle
 250 #define IMAGE_HEIGHT BMPHEIGHT_sliding_puzzle
 251 #define IMAGE_SIZE IMAGE_WIDTH
 252
 253 /* use a square image, (the default Archos bitmap looks square on its display)
 254    Puzzle image dimension is min(lcd_height,lcd_width)
 255    4x4 is more convenient for square puzzles
 256    Note: sliding_puzzle.bmp should be evenly divisible by SPOTS_X
 257    and SPOTS_Y, otherwise lcd_bitmap_part stride won't be correct */
 258 #define SPOTS_X 4
 259 #define SPOTS_Y 4
 260 #define SPOTS_WIDTH  (IMAGE_WIDTH / SPOTS_X)
 261 #define SPOTS_HEIGHT (IMAGE_HEIGHT / SPOTS_Y)
 262 #define NUM_SPOTS    (SPOTS_X*SPOTS_Y)
 263 #define HOLE_ID      (NUM_SPOTS)
 264 #define INITIAL_HOLE (HOLE_ID-1)
 265
 266 enum picmodes
 267 {
 268     PICMODE_NUMERALS = 0,
 269     PICMODE_INITIAL_PICTURE,
 270     PICMODE_DEFAULT_PICTURE,
 271 #ifdef HAVE_ALBUMART
 272     PICMODE_ALBUM_ART,
 273 #endif
 274 //    PICMODE_RANDOM,
 275     PICMODE_LAST_XXX /* placeholder */
 276 };
 277
 278 static const char* const picmode_descriptions[] = {
 279     "Numerals",
 280     "Viewer Picture",
 281     "Default Picture",
 282 #ifdef HAVE_ALBUMART
 283     "Album Art",
 284 #endif
 285     "Shouldn't Get Here",
 286 };
 287
 288 static int spots[NUM_SPOTS];
 289 static int hole = INITIAL_HOLE, moves;
 290 static unsigned char s[32];
 291 static enum picmodes picmode = PICMODE_INITIAL_PICTURE;
 292 static int num_font = FONT_UI;
 293 static int moves_font = FONT_UI;
 294 static int moves_y = 0;
 295
 296 static unsigned char *img_buf;
 297 static size_t img_buf_len;
 298 #ifdef HAVE_ALBUMART
 299 static char albumart_path[MAX_PATH+1];
 300 #endif
 301 static char img_buf_path[MAX_PATH+1];
 302
 303 static const fb_data * puzzle_bmp_ptr;
 304 /* initial_bmp_path points to selected bitmap if this game is launched
 305    as a viewer for a .bmp file, or NULL if game is launched regular way */
 306 static const char * initial_bmp_path=NULL;
 307
 308 #ifdef HAVE_ALBUMART
 309 const char * get_albumart_bmp_path(void)
 310 {
 311     struct mp3entry* track = rb->audio_current_track();
 312
 313     if (!track || !track->path || track->path[0] == '\0')
 314         return NULL;
 315
 316     if (!rb->search_albumart_files(track, "", albumart_path, MAX_PATH ) )
 317         return NULL;
 318
 319     albumart_path[ MAX_PATH ] = '\0';
 320     return albumart_path;
 321 }
 322 #endif
 323
 324 const char * get_random_bmp_path(void)
 325 {
 326     return(initial_bmp_path);
 327 }
 328
 329 static bool load_resize_bitmap(void)
 330 {
 331     int rc;
 332     const char * filename = NULL;
 333
 334     /* initially assume using the built-in default */
 335     puzzle_bmp_ptr = sliding_puzzle;
 336
 337     switch( picmode ){
 338         /* some modes don't even need to touch disk and trivially succeed */
 339         case PICMODE_NUMERALS:
 340         case PICMODE_DEFAULT_PICTURE:
 341         default:
 342             return(true);
 343
 344 #ifdef HAVE_ALBUMART
 345         case PICMODE_ALBUM_ART:
 346             filename = get_albumart_bmp_path();
 347             break;
 348 #endif
 349 /*
 350         case PICMODE_RANDOM:
 351             if(NULL == (filename=get_random_bmp_path()) )
 352                 filename = initial_bmp_path;
 353             break;
 354 */
 355         case PICMODE_INITIAL_PICTURE:
 356             filename = initial_bmp_path;
 357             break;
 358     };
 359
 360     if( filename != NULL )
 361     {
 362         /* if we already loaded image before, don't touch disk */
 363         if( 0 == rb->strcmp( filename, img_buf_path ) )
 364         {
 365             puzzle_bmp_ptr = (const fb_data *)img_buf;
 366             return true;
 367         }
 368
 369         struct bitmap main_bitmap;
 370         rb->memset(&main_bitmap,0,sizeof(struct bitmap));
 371         main_bitmap.data = img_buf;
 372
 373         main_bitmap.width = IMAGE_WIDTH;
 374         main_bitmap.height = IMAGE_HEIGHT;
 375
 376         rc = READ_IMAGE( filename, &main_bitmap,
 377                          img_buf_len,
 378                          FORMAT_NATIVE|FORMAT_RESIZE|FORMAT_DITHER,
 379                          NULL);
 380         if( rc > 0 )
 381         {
 382             puzzle_bmp_ptr = (const fb_data *)img_buf;
 383             rb->strcpy( img_buf_path, filename );
 384             return true;
 385         }
 386     }
 387
 388     /* something must have failed. get_albumart_bmp_path could return
 389        NULL if albumart doesn't exist or couldn't be loaded, or
 390        read_bmp_file could have failed.  return false and caller should
 391        try the next mode (PICMODE_DEFAULT_PICTURE and PICMODE_NUMERALS will
 392        always succeed) */
 393     return false;
 394 }
 395
 396 /* draws a spot at the coordinates (x,y), range of p is 1-20 */
 397 static void draw_spot(int p, int x, int y)
 398 {
 399     int w, h;
 400
 401     if (p == HOLE_ID)
 402     {
 403 #if LCD_DEPTH==1
 404         /* the bottom-right cell of the default sliding_puzzle image is
 405            an appropriate hole graphic */
 406         rb->lcd_bitmap_part(sliding_puzzle, ((p-1)%SPOTS_X)*SPOTS_WIDTH,
 407                                  ((p-1)/SPOTS_X)*SPOTS_HEIGHT,
 408                                 IMAGE_WIDTH, x, y, SPOTS_WIDTH, SPOTS_HEIGHT);
 409 #else
 410         /* just draw a black rectangle */
 411         int old_fg = rb->lcd_get_foreground();
 412         rb->lcd_set_foreground(LCD_BLACK);
 413         rb->lcd_fillrect(x,y,SPOTS_WIDTH,SPOTS_HEIGHT);
 414         rb->lcd_set_foreground(old_fg);
 415 #endif
 416     }
 417     else if (picmode != PICMODE_NUMERALS)
 418     {
 419         rb->lcd_bitmap_part( puzzle_bmp_ptr, ((p-1)%SPOTS_X)*SPOTS_WIDTH,
 420                              ((p-1)/SPOTS_X)*SPOTS_HEIGHT,
 421                              IMAGE_WIDTH, x, y, SPOTS_WIDTH, SPOTS_HEIGHT);
 422     } else {
 423         rb->lcd_drawrect(x, y, SPOTS_WIDTH, SPOTS_HEIGHT);
 424         rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
 425         rb->lcd_fillrect(x+1, y+1, SPOTS_WIDTH-2, SPOTS_HEIGHT-2);
 426         rb->lcd_set_drawmode(DRMODE_SOLID);
 427         rb->snprintf(s, sizeof(s), "%d", p);
 428         rb->lcd_setfont(num_font);
 429         rb->lcd_getstringsize(s, &w, &h);
 430         rb->lcd_putsxy(x + (SPOTS_WIDTH/2) - w / 2,
 431                        y + (SPOTS_HEIGHT/2) - h / 2, s);
 432     }
 433 }
 434
 435 /* check if the puzzle is solved */
 436 static bool puzzle_finished(void)
 437 {
 438     int i;
 439     for (i=0; i<NUM_SPOTS; i++)
 440     if (spots[i] != (i+1))
 441         return false;
 442     return true;
 443 }
 444
 445 /* move a piece in any direction */
 446 static void move_spot(int x, int y)
 447 {
 448     int i, w;
 449     spots[hole] = spots[hole-x-SPOTS_X*y];
 450     hole -= (x+SPOTS_X*y);
 451     moves++;
 452     rb->lcd_setfont(moves_font);
 453 #if LCD_WIDTH > LCD_HEIGHT
 454     rb->snprintf(s, sizeof(s), "%d", moves);
 455     w = rb->lcd_getstringsize(s, NULL, NULL);
 456     rb->lcd_putsxy((IMAGE_WIDTH+1+(LCD_WIDTH-IMAGE_WIDTH-1)/2) - w / 2,
 457                    moves_y, s);
 458 #else
 459     (void)w;
 460     rb->snprintf(s, sizeof(s), "Moves: %d", moves);
 461     rb->lcd_putsxy(3, moves_y, s);
 462 #endif
 463     for(i=1;i<=4;i++)
 464     {
 465        draw_spot(HOLE_ID,
 466                  (hole%SPOTS_X)*SPOTS_WIDTH,
 467                  (hole/SPOTS_X)*SPOTS_HEIGHT);
 468        draw_spot(spots[hole],
 469                  (hole%SPOTS_X)*SPOTS_WIDTH + (i*x*SPOTS_WIDTH)/5,
 470                  (hole/SPOTS_X)*SPOTS_HEIGHT + (i*y*SPOTS_HEIGHT)/5);
 471        rb->lcd_update();
 472        rb->sleep(HZ/50);
 473     }
 474     draw_spot(HOLE_ID,
 475               (hole%SPOTS_X)*SPOTS_WIDTH,
 476               (hole/SPOTS_X)*SPOTS_HEIGHT);
 477     draw_spot(spots[hole],
 478               ((hole%SPOTS_X)+x)*SPOTS_WIDTH,
 479               ((hole/SPOTS_X)+y)*SPOTS_HEIGHT);
 480     rb->lcd_update();
 481
 482     spots[hole] = HOLE_ID;
 483 }
 484
 485 static void draw_playfield(void)
 486 {
 487     int i, w;
 488
 489     rb->lcd_clear_display();
 490     rb->lcd_setfont(moves_font);
 491 #if LCD_WIDTH > LCD_HEIGHT
 492     rb->lcd_vline(IMAGE_WIDTH, 0, LCD_HEIGHT-1);
 493     w = rb->lcd_getstringsize("Moves", NULL, NULL);
 494     rb->lcd_putsxy((IMAGE_WIDTH+1+(LCD_WIDTH-IMAGE_WIDTH-1)/2) - w / 2,
 495                    10, "Moves");
 496     rb->snprintf(s, sizeof(s), "%d", moves);
 497     w = rb->lcd_getstringsize(s, NULL, NULL);
 498     rb->lcd_putsxy((IMAGE_WIDTH+1+(LCD_WIDTH-IMAGE_WIDTH-1)/2) - w / 2,
 499                    moves_y, s);
 500 #else
 501     (void)w;
 502     rb->lcd_hline(0, LCD_WIDTH-1, IMAGE_HEIGHT);
 503     rb->snprintf(s, sizeof(s), "Moves: %d", moves);
 504     rb->lcd_putsxy(3, moves_y, s);
 505 #endif
 506
 507     /* draw spots to the lcd */
 508     for (i=0; i<NUM_SPOTS; i++)
 509         draw_spot(spots[i], (i%SPOTS_X)*SPOTS_WIDTH, (i/SPOTS_X)*SPOTS_HEIGHT);
 510
 511     rb->lcd_update();
 512 }
 513
 514 /* initializes the puzzle */
 515 static void puzzle_init(void)
 516 {
 517     int i, r, temp, tsp[NUM_SPOTS];
 518
 519     moves = 0;
 520
 521     /* shuffle spots */
 522     for (i=NUM_SPOTS-1; i>=0; i--) {
 523         r = (rb->rand() % (i+1));
 524
 525         temp = spots[r];
 526         spots[r] = spots[i];
 527         spots[i] = temp;
 528
 529         if (spots[i]==HOLE_ID)
 530             hole = i;
 531     }
 532
 533     /* test if the puzzle is solvable */
 534     for (i=0; i<NUM_SPOTS; i++)
 535         tsp[i] = spots[i];
 536     r=0;
 537
 538     /* First, check if the problem has even or odd parity,
 539        depending on where the empty square is */
 540     if ((((SPOTS_X-1)-hole%SPOTS_X) + ((SPOTS_Y-1)-hole/SPOTS_X))%2 == 1)
 541         ++r;
 542
 543     /* Now check how many swaps we need to solve it */
 544     for (i=0; i<NUM_SPOTS-1; i++) {
 545         while (tsp[i] != (i+1)) {
 546             temp = tsp[i];
 547             tsp[i] = tsp[temp-1];
 548             tsp[temp-1] = temp;
 549             ++r;
 550         }
 551     }
 552
 553     /* if the random puzzle isn't solvable just change two spots */
 554     if (r%2 == 1) {
 555         if (spots[0]!=HOLE_ID && spots[1]!=HOLE_ID) {
 556             temp = spots[0];
 557             spots[0] = spots[1];
 558             spots[1] = temp;
 559         } else {
 560             temp = spots[2];
 561             spots[2] = spots[3];
 562             spots[3] = temp;
 563         }
 564     }
 565
 566     draw_playfield();
 567 }
 568
 569 /* the main game loop */
 570 static int puzzle_loop(void)
 571 {
 572     int button;
 573     int lastbutton = BUTTON_NONE;
 574     bool load_success;
 575
 576     puzzle_init();
 577     while(true) {
 578         button = rb->button_get(true);
 579         switch (button) {
 580 #ifdef PUZZLE_RC_QUIT
 581             case PUZZLE_RC_QUIT:
 582 #endif
 583             case PUZZLE_QUIT:
 584                 /* get out of here */
 585                 return PLUGIN_OK;
 586
 587             case PUZZLE_SHUFFLE:
 588 #ifdef PUZZLE_SHUFFLE_PICTURE_PRE
 589                 if (lastbutton != PUZZLE_SHUFFLE_PICTURE_PRE)
 590                     break;
 591 #endif
 592                 /* mix up the pieces */
 593                 puzzle_init();
 594                 break;
 595
 596             case PUZZLE_PICTURE:
 597 #ifdef PUZZLE_SHUFFLE_PICTURE_PRE
 598                 if (lastbutton != PUZZLE_SHUFFLE_PICTURE_PRE)
 599                     break;
 600 #endif
 601                 /* change picture */
 602                 picmode = (picmode+1)%PICMODE_LAST_XXX;
 603
 604                 /* if load_resize_bitmap fails to load bitmap, try next picmode
 605                 */
 606                 do
 607                 {
 608                     load_success = load_resize_bitmap();
 609                     if( !load_success )
 610                         picmode = (picmode+1)%PICMODE_LAST_XXX;
 611                 }
 612                 while( !load_success );
 613
 614                 /* tell the user what mode we picked in the end! */
 615                 rb->splash(HZ,picmode_descriptions[ picmode ] );
 616                 draw_playfield();
 617                 break;
 618
 619             case PUZZLE_LEFT:
 620                 if ((hole%SPOTS_X)<(SPOTS_X-1) && !puzzle_finished())
 621                     move_spot(-1, 0);
 622                 break;
 623
 624             case PUZZLE_RIGHT:
 625                 if ((hole%SPOTS_X)>0 && !puzzle_finished())
 626                     move_spot(1, 0);
 627                 break;
 628
 629             case PUZZLE_UP:
 630                 if ((hole/SPOTS_X)<(SPOTS_Y-1) && !puzzle_finished())
 631                     move_spot(0, -1);
 632                 break;
 633
 634             case PUZZLE_DOWN:
 635                 if ((hole/SPOTS_X)>0 && !puzzle_finished())
 636                     move_spot(0, 1);
 637                 break;
 638
 639             default:
 640                 if (rb->default_event_handler(button) == SYS_USB_CONNECTED)
 641                     return PLUGIN_USB_CONNECTED;
 642                 break;
 643         }
 644         if (button != BUTTON_NONE)
 645             lastbutton = button;
 646     }
 647 }
 648
 649 enum plugin_status plugin_start(
 650                                 const void* parameter)
 651 {
 652     int i, w, h;
 653
 654     initial_bmp_path=(const char *)parameter;
 655     img_buf = rb->plugin_get_buffer(&img_buf_len);
 656     picmode = PICMODE_INITIAL_PICTURE;
 657     img_buf_path[0] = '\0';
 658
 659     /* If launched as a viewer, just go straight to the game without
 660        bothering with the splash or instructions page */
 661     if(parameter==NULL)
 662     {
 663         /* if not launched as a viewer, use default puzzle, and show help */
 664         picmode = PICMODE_DEFAULT_PICTURE;
 665
 666         /* print title */
 667         rb->lcd_getstringsize((unsigned char *)"Sliding Puzzle", &w, &h);
 668         w = (w+1)/2;
 669         h = (h+1)/2;
 670         rb->lcd_clear_display();
 671         rb->lcd_putsxy(LCD_WIDTH/2-w, (LCD_HEIGHT/2)-h,
 672                        (unsigned char *)"Sliding Puzzle");
 673         rb->lcd_update();
 674         rb->sleep(HZ);
 675
 676         /* print instructions */
 677         rb->lcd_clear_display();
 678         rb->lcd_setfont(FONT_SYSFIXED);
 679 #if CONFIG_KEYPAD == RECORDER_PAD || CONFIG_KEYPAD == ARCHOS_AV300_PAD
 680         rb->lcd_putsxy(3, 18, "[OFF] to stop");
 681         rb->lcd_putsxy(3, 28, "[F1] shuffle");
 682         rb->lcd_putsxy(3, 38, "[F2] change pic");
 683 #elif CONFIG_KEYPAD == ONDIO_PAD
 684         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 685         rb->lcd_putsxy(0, 28, "[MODE..] shuffle");
 686         rb->lcd_putsxy(0, 38, "[MODE] change pic");
 687 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
 688       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
 689       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
 690         rb->lcd_putsxy(0, 18, "[S-MENU] to stop");
 691         rb->lcd_putsxy(0, 28, "[S-LEFT] shuffle");
 692         rb->lcd_putsxy(0, 38, "[S-RIGHT] change pic");
 693 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
 694       (CONFIG_KEYPAD == IRIVER_H300_PAD)
 695         rb->lcd_putsxy(0, 18, "[STOP] to stop");
 696         rb->lcd_putsxy(0, 28, "[SELECT] shuffle");
 697         rb->lcd_putsxy(0, 38, "[PLAY] change pic");
 698 #elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
 699         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 700         rb->lcd_putsxy(0, 28, "[REC] shuffle");
 701         rb->lcd_putsxy(0, 38, "[PLAY] change pic");
 702 #elif CONFIG_KEYPAD == GIGABEAT_PAD
 703         rb->lcd_putsxy(0, 18, "[POWER] to stop");
 704         rb->lcd_putsxy(0, 28, "[SELECT] shuffle");
 705         rb->lcd_putsxy(0, 38, "[A] change pic");
 706 #elif (CONFIG_KEYPAD == SANSA_E200_PAD) || \
 707       (CONFIG_KEYPAD == SANSA_C200_PAD)
 708         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 709         rb->lcd_putsxy(0, 28, "[REC] shuffle");
 710         rb->lcd_putsxy(0, 38, "[SELECT] change pic");
 711 #elif CONFIG_KEYPAD == IRIVER_H10_PAD
 712         rb->lcd_putsxy(0, 18, "[OFF] to stop");
 713         rb->lcd_putsxy(0, 28, "[REW] shuffle");
 714         rb->lcd_putsxy(0, 38, "[PLAY] change pic");
 715 #elif CONFIG_KEYPAD == GIGABEAT_S_PAD
 716         rb->lcd_putsxy(0, 18, "[BACK] to stop");
 717         rb->lcd_putsxy(0, 28, "[SELECT] shuffle");
 718         rb->lcd_putsxy(0, 38, "[MENU] change pic");
 719 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
 720         rb->lcd_putsxy(0, 18, "[REC] to stop");
 721         rb->lcd_putsxy(0, 28, "[MODE] shuffle");
 722         rb->lcd_putsxy(0, 38, "[MENU] change pic");
 723 #endif
 724 #ifdef HAVE_TOUCHSCREEN
 725         rb->lcd_putsxy(0, 18, PUZZLE_QUIT_TEXT " to stop");
 726         rb->lcd_putsxy(0, 28, PUZZLE_SHUFFLE_TEXT " shuffle");
 727         rb->lcd_putsxy(0, 38, PUZZLE_PICTURE_TEXT " change pic");
 728 #endif
 729 #ifdef HAVE_ALBUMART
 730         rb->lcd_putsxy(0,48,"    pic->albumart->num");
 731 #else
 732         rb->lcd_putsxy(0,48,"    pic<->num");
 733 #endif
 734         rb->lcd_update();
 735         rb->button_get_w_tmo(HZ*2);
 736     }
 737
 738     hole = INITIAL_HOLE;
 739
 740     if( !load_resize_bitmap() )
 741     {
 742         rb->lcd_clear_display();
 743         rb->splash(HZ*2,"Failed to load bitmap!");
 744         return PLUGIN_OK;
 745     }
 746
 747     /* Calculate possible font sizes and text positions */
 748     rb->lcd_setfont(FONT_UI);
 749     rb->lcd_getstringsize("15", &w, &h);
 750     if ((w > (SPOTS_WIDTH-2)) || (h > (SPOTS_HEIGHT-2)))
 751         num_font = FONT_SYSFIXED;
 752
 753 #if LCD_WIDTH > LCD_HEIGHT
 754     rb->lcd_getstringsize("Moves", &w, &h);
 755     if (w > (LCD_WIDTH-IMAGE_WIDTH-1))
 756         moves_font = FONT_SYSFIXED;
 757     rb->lcd_setfont(moves_font);
 758     rb->lcd_getstringsize("Moves", &w, &h);
 759     moves_y = 10 + h;
 760 #else
 761     rb->lcd_getstringsize("Moves: 999", &w, &h);
 762     if ((w > LCD_WIDTH) || (h > (LCD_HEIGHT-IMAGE_HEIGHT-1)))
 763         moves_font = FONT_SYSFIXED;
 764     rb->lcd_setfont(moves_font);
 765     rb->lcd_getstringsize("Moves: 999", &w, &h);
 766     moves_y = (IMAGE_HEIGHT+1+(LCD_HEIGHT-IMAGE_HEIGHT-1)/2) - h / 2;
 767 #endif
 768     for (i=0; i<NUM_SPOTS; i++)
 769         spots[i]=(i+1);
 770
 771 #ifdef HAVE_LCD_COLOR
 772     rb->lcd_set_background(LCD_BLACK);
 773     rb->lcd_set_foreground(LCD_WHITE);
 774     rb->lcd_set_backdrop(NULL);
 775 #elif LCD_DEPTH > 1
 776     rb->lcd_set_background(LCD_WHITE);
 777     rb->lcd_set_foreground(LCD_BLACK);
 778     rb->lcd_set_backdrop(NULL);
 779 #endif
 780
 781     draw_playfield();
 782     rb->sleep(HZ*2);
 783
 784     return puzzle_loop();
 785 }
 786
 787 #endif