apps/plugins/minesweeper.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2004-2006 Antoine Cellerier <dionoea -at- videolan -dot- org>
  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
  22 #include "plugin.h"
  23
  24 #ifdef HAVE_LCD_BITMAP
  25
  26 #include "lib/playback_control.h"
  27
  28 PLUGIN_HEADER
  29
  30 /* what the minesweeper() function can return */
  31 enum minesweeper_status {
  32     MINESWEEPER_WIN,
  33     MINESWEEPER_LOSE,
  34     MINESWEEPER_QUIT,
  35     MINESWEEPER_USB
  36 };
  37
  38 /* variable button definitions */
  39 #if CONFIG_KEYPAD == RECORDER_PAD
  40 #   define MINESWP_LEFT     BUTTON_LEFT
  41 #   define MINESWP_RIGHT    BUTTON_RIGHT
  42 #   define MINESWP_UP       BUTTON_UP
  43 #   define MINESWP_DOWN     BUTTON_DOWN
  44 #   define MINESWP_QUIT     BUTTON_OFF
  45 #   define MINESWP_TOGGLE   BUTTON_ON
  46 #   define MINESWP_TOGGLE2  BUTTON_F1
  47 #   define MINESWP_DISCOVER BUTTON_PLAY
  48 #   define MINESWP_DISCOVER2 BUTTON_F2
  49 #   define MINESWP_INFO     BUTTON_F3
  50
  51 #elif CONFIG_KEYPAD == ARCHOS_AV300_PAD
  52 #   define MINESWP_LEFT     BUTTON_LEFT
  53 #   define MINESWP_RIGHT    BUTTON_RIGHT
  54 #   define MINESWP_UP       BUTTON_UP
  55 #   define MINESWP_DOWN     BUTTON_DOWN
  56 #   define MINESWP_QUIT     BUTTON_OFF
  57 #   define MINESWP_TOGGLE   BUTTON_ON
  58 #   define MINESWP_TOGGLE2  BUTTON_F1
  59 #   define MINESWP_DISCOVER BUTTON_SELECT
  60 #   define MINESWP_DISCOVER2 BUTTON_F2
  61 #   define MINESWP_INFO     BUTTON_F3
  62
  63 #elif CONFIG_KEYPAD == ONDIO_PAD
  64 #   define MINESWP_LEFT     BUTTON_LEFT
  65 #   define MINESWP_RIGHT    BUTTON_RIGHT
  66 #   define MINESWP_UP       BUTTON_UP
  67 #   define MINESWP_DOWN     BUTTON_DOWN
  68 #   define MINESWP_QUIT     BUTTON_OFF
  69 #   define MINESWP_TOGGLE_PRE BUTTON_MENU
  70 #   define MINESWP_TOGGLE   (BUTTON_MENU | BUTTON_REL)
  71 #   define MINESWP_DISCOVER (BUTTON_MENU | BUTTON_REPEAT)
  72 #   define MINESWP_INFO     (BUTTON_MENU | BUTTON_OFF)
  73
  74 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
  75       (CONFIG_KEYPAD == IRIVER_H300_PAD)
  76 #   define MINESWP_LEFT     BUTTON_LEFT
  77 #   define MINESWP_RIGHT    BUTTON_RIGHT
  78 #   define MINESWP_UP       BUTTON_UP
  79 #   define MINESWP_DOWN     BUTTON_DOWN
  80 #   define MINESWP_QUIT     BUTTON_OFF
  81 #   define MINESWP_TOGGLE   BUTTON_ON
  82 #   define MINESWP_TOGGLE2  BUTTON_REC
  83 #   define MINESWP_DISCOVER BUTTON_SELECT
  84 #   define MINESWP_INFO     BUTTON_MODE
  85
  86 #   define MINESWP_RC_QUIT  BUTTON_RC_STOP
  87
  88 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
  89       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  90       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  91 #   define MINESWP_SCROLLWHEEL
  92 #   define MINESWP_LEFT       BUTTON_LEFT
  93 #   define MINESWP_RIGHT      BUTTON_RIGHT
  94 #   define MINESWP_UP         BUTTON_MENU
  95 #   define MINESWP_DOWN       BUTTON_PLAY
  96 #   define MINESWP_NEXT       BUTTON_SCROLL_FWD
  97 #   define MINESWP_PREV       BUTTON_SCROLL_BACK
  98 #   define MINESWP_QUIT       (BUTTON_SELECT | BUTTON_MENU)
  99 #   define MINESWP_TOGGLE_PRE BUTTON_SELECT
 100 #   define MINESWP_TOGGLE     (BUTTON_SELECT | BUTTON_REL)
 101 #   define MINESWP_DISCOVER   (BUTTON_SELECT | BUTTON_REPEAT)
 102 #   define MINESWP_INFO       (BUTTON_SELECT | BUTTON_PLAY)
 103
 104 #elif (CONFIG_KEYPAD == IAUDIO_X5M5_PAD)
 105 #   define MINESWP_LEFT     BUTTON_LEFT
 106 #   define MINESWP_RIGHT    BUTTON_RIGHT
 107 #   define MINESWP_UP       BUTTON_UP
 108 #   define MINESWP_DOWN     BUTTON_DOWN
 109 #   define MINESWP_QUIT     BUTTON_POWER
 110 #   define MINESWP_TOGGLE   BUTTON_PLAY
 111 #   define MINESWP_DISCOVER BUTTON_SELECT
 112 #   define MINESWP_INFO     BUTTON_REC
 113
 114 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
 115 #   define MINESWP_LEFT     BUTTON_LEFT
 116 #   define MINESWP_RIGHT    BUTTON_RIGHT
 117 #   define MINESWP_UP       BUTTON_UP
 118 #   define MINESWP_DOWN     BUTTON_DOWN
 119 #   define MINESWP_QUIT     BUTTON_POWER
 120 #   define MINESWP_TOGGLE   BUTTON_A
 121 #   define MINESWP_DISCOVER BUTTON_SELECT
 122 #   define MINESWP_INFO     BUTTON_MENU
 123
 124 #elif (CONFIG_KEYPAD == SANSA_E200_PAD)
 125
 126 #   define MINESWP_SCROLLWHEEL
 127 #   define MINESWP_LEFT     BUTTON_LEFT
 128 #   define MINESWP_RIGHT    BUTTON_RIGHT
 129 #   define MINESWP_UP       BUTTON_UP
 130 #   define MINESWP_DOWN     BUTTON_DOWN
 131 #   define MINESWP_QUIT     BUTTON_POWER
 132 #   define MINESWP_NEXT     BUTTON_SCROLL_FWD
 133 #   define MINESWP_PREV     BUTTON_SCROLL_BACK
 134 #   define MINESWP_TOGGLE   BUTTON_REC
 135 #   define MINESWP_DISCOVER BUTTON_SELECT
 136 #   define MINESWP_INFO     (BUTTON_REC|BUTTON_REPEAT)
 137
 138 #elif (CONFIG_KEYPAD == SANSA_FUZE_PAD)
 139
 140 #   define MINESWP_LEFT     BUTTON_LEFT
 141 #   define MINESWP_RIGHT    BUTTON_RIGHT
 142 #   define MINESWP_UP       BUTTON_UP
 143 #   define MINESWP_DOWN     BUTTON_DOWN
 144 #   define MINESWP_QUIT     (BUTTON_HOME|BUTTON_REPEAT)
 145 #   define MINESWP_TOGGLE   BUTTON_SCROLL_FWD
 146 #   define MINESWP_DISCOVER BUTTON_SELECT
 147 #   define MINESWP_INFO     BUTTON_SCROLL_BACK
 148
 149 #elif (CONFIG_KEYPAD == SANSA_C200_PAD) || \
 150 (CONFIG_KEYPAD == SANSA_CLIP_PAD) || \
 151 (CONFIG_KEYPAD == SANSA_M200_PAD)
 152 #   define MINESWP_LEFT       BUTTON_LEFT
 153 #   define MINESWP_RIGHT      BUTTON_RIGHT
 154 #   define MINESWP_UP         BUTTON_UP
 155 #   define MINESWP_DOWN       BUTTON_DOWN
 156 #   define MINESWP_QUIT       BUTTON_POWER
 157 #   define MINESWP_TOGGLE_PRE BUTTON_SELECT
 158 #   define MINESWP_TOGGLE     (BUTTON_SELECT | BUTTON_REL)
 159 #   define MINESWP_TOGGLE2    BUTTON_VOL_DOWN
 160 #   define MINESWP_DISCOVER   (BUTTON_SELECT | BUTTON_REPEAT)
 161 #   define MINESWP_DISCOVER2  BUTTON_VOL_UP
 162 #   define MINESWP_INFO       (BUTTON_SELECT | BUTTON_UP)
 163
 164 #elif (CONFIG_KEYPAD == IRIVER_H10_PAD)
 165 #   define MINESWP_LEFT     BUTTON_LEFT
 166 #   define MINESWP_RIGHT    BUTTON_RIGHT
 167 #   define MINESWP_UP       BUTTON_SCROLL_UP
 168 #   define MINESWP_DOWN     BUTTON_SCROLL_DOWN
 169 #   define MINESWP_QUIT     BUTTON_POWER
 170 #   define MINESWP_TOGGLE   BUTTON_PLAY
 171 #   define MINESWP_DISCOVER BUTTON_REW
 172 #   define MINESWP_INFO     (BUTTON_REW | BUTTON_PLAY)
 173
 174 #elif (CONFIG_KEYPAD == GIGABEAT_S_PAD)
 175 #   define MINESWP_LEFT     BUTTON_LEFT
 176 #   define MINESWP_RIGHT    BUTTON_RIGHT
 177 #   define MINESWP_UP       BUTTON_UP
 178 #   define MINESWP_DOWN     BUTTON_DOWN
 179 #   define MINESWP_QUIT     BUTTON_BACK
 180 #   define MINESWP_TOGGLE   BUTTON_PLAY
 181 #   define MINESWP_DISCOVER BUTTON_SELECT
 182 #   define MINESWP_INFO     BUTTON_MENU
 183
 184 #elif (CONFIG_KEYPAD == MROBE100_PAD)
 185 #   define MINESWP_LEFT     BUTTON_LEFT
 186 #   define MINESWP_RIGHT    BUTTON_RIGHT
 187 #   define MINESWP_UP       BUTTON_UP
 188 #   define MINESWP_DOWN     BUTTON_DOWN
 189 #   define MINESWP_QUIT     BUTTON_POWER
 190 #   define MINESWP_TOGGLE   BUTTON_DISPLAY
 191 #   define MINESWP_DISCOVER BUTTON_SELECT
 192 #   define MINESWP_INFO     BUTTON_MENU
 193
 194 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
 195 #   define MINESWP_LEFT     BUTTON_RC_REW
 196 #   define MINESWP_RIGHT    BUTTON_RC_FF
 197 #   define MINESWP_UP       BUTTON_RC_VOL_UP
 198 #   define MINESWP_DOWN     BUTTON_RC_VOL_DOWN
 199 #   define MINESWP_QUIT     BUTTON_RC_REC
 200 #   define MINESWP_TOGGLE   BUTTON_RC_MODE
 201 #   define MINESWP_DISCOVER BUTTON_RC_PLAY
 202 #   define MINESWP_INFO     BUTTON_RC_MENU
 203
 204 #elif (CONFIG_KEYPAD == COWON_D2_PAD)
 205 #   define MINESWP_QUIT     BUTTON_POWER
 206
 207 #elif CONFIG_KEYPAD == CREATIVEZVM_PAD
 208 #   define MINESWP_LEFT     BUTTON_LEFT
 209 #   define MINESWP_RIGHT    BUTTON_RIGHT
 210 #   define MINESWP_UP       BUTTON_UP
 211 #   define MINESWP_DOWN     BUTTON_DOWN
 212 #   define MINESWP_QUIT     BUTTON_BACK
 213 #   define MINESWP_TOGGLE   BUTTON_SELECT
 214 #   define MINESWP_DISCOVER BUTTON_PLAY
 215 #   define MINESWP_INFO     BUTTON_MENU
 216
 217 #elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
 218 #   define MINESWP_LEFT     BUTTON_LEFT
 219 #   define MINESWP_RIGHT    BUTTON_RIGHT
 220 #   define MINESWP_UP       BUTTON_UP
 221 #   define MINESWP_DOWN     BUTTON_DOWN
 222 #   define MINESWP_QUIT     BUTTON_POWER
 223 #   define MINESWP_TOGGLE   BUTTON_VIEW
 224 #   define MINESWP_DISCOVER BUTTON_SELECT
 225 #   define MINESWP_INFO     BUTTON_MENU
 226
 227 #elif CONFIG_KEYPAD == PHILIPS_SA9200_PAD
 228 #   define MINESWP_LEFT     BUTTON_PREV
 229 #   define MINESWP_RIGHT    BUTTON_NEXT
 230 #   define MINESWP_UP       BUTTON_UP
 231 #   define MINESWP_DOWN     BUTTON_DOWN
 232 #   define MINESWP_QUIT     BUTTON_POWER
 233 #   define MINESWP_TOGGLE   BUTTON_RIGHT
 234 #   define MINESWP_DISCOVER BUTTON_PLAY
 235 #   define MINESWP_INFO     BUTTON_MENU
 236
 237 #elif (CONFIG_KEYPAD == ONDAVX747_PAD) || \
 238 CONFIG_KEYPAD == ONDAVX777_PAD || \
 239 CONFIG_KEYPAD == MROBE500_PAD
 240 #   define MINESWP_QUIT     BUTTON_POWER
 241
 242 #elif (CONFIG_KEYPAD == SAMSUNG_YH_PAD)
 243 #   define MINESWP_LEFT     BUTTON_LEFT
 244 #   define MINESWP_RIGHT    BUTTON_RIGHT
 245 #   define MINESWP_UP       BUTTON_UP
 246 #   define MINESWP_DOWN     BUTTON_DOWN
 247 #   define MINESWP_QUIT     BUTTON_REC
 248 #   define MINESWP_TOGGLE   BUTTON_PLAY
 249 #   define MINESWP_DISCOVER BUTTON_REW
 250 #   define MINESWP_INFO     BUTTON_FFWD
 251
 252 #else
 253 #error No keymap defined!
 254 #endif
 255
 256 #ifdef HAVE_TOUCHSCREEN
 257 #ifndef MINESWP_QUIT
 258 #   define MINESWP_QUIT     BUTTON_TOPLEFT
 259 #endif
 260 #ifndef MINESWP_LEFT
 261 #   define MINESWP_LEFT     BUTTON_MIDLEFT
 262 #endif
 263 #ifndef MINESWP_RIGHT
 264 #   define MINESWP_RIGHT    BUTTON_MIDRIGHT
 265 #endif
 266 #ifndef MINESWP_UP
 267 #   define MINESWP_UP       BUTTON_TOPMIDDLE
 268 #endif
 269 #ifndef MINESWP_DOWN
 270 #   define MINESWP_DOWN     BUTTON_BOTTOMMIDDLE
 271 #endif
 272 #ifndef MINESWP_TOGGLE
 273 #   define MINESWP_TOGGLE   BUTTON_CENTER
 274 #endif
 275 #ifndef MINESWP_DISCOVER
 276 #   define MINESWP_DISCOVER BUTTON_BOTTOMLEFT
 277 #endif
 278 #ifndef MINESWP_INFO
 279 #   define MINESWP_INFO     BUTTON_BOTTOMRIGHT
 280 #endif
 281 #endif
 282
 283 extern const fb_data minesweeper_tiles[];
 284
 285 #ifdef HAVE_LCD_COLOR
 286 #   if ( LCD_HEIGHT * LCD_WIDTH ) / ( 16 * 16 ) >= 130
 287         /* We want to have at least 130 tiles on the screen */
 288 #       define TileSize 16
 289 #   elif ( LCD_HEIGHT * LCD_WIDTH ) / ( 12 * 12 ) >= 130
 290 #       define TileSize 12
 291 #   else
 292 #       define TileSize 10
 293 #   endif
 294 #   define BackgroundColor LCD_RGBPACK( 128, 128, 128 )
 295 #elif LCD_DEPTH > 1
 296 #   define TileSize 12
 297 #else
 298 #   define TileSize 8
 299 #endif
 300
 301 #define Mine         9
 302 #define Flag         10
 303 #define Unknown      11
 304 #define ExplodedMine 12
 305 #define WrongFlag    13
 306 #define CorrectFlag  14
 307
 308 #define draw_tile( num, x, y ) \
 309     rb->lcd_bitmap_part( minesweeper_tiles, 0, num * TileSize, \
 310                          TileSize, left+x*TileSize, top+y*TileSize, \
 311                          TileSize, TileSize )
 312
 313 #define invert_tile( x, y ) \
 314     rb->lcd_set_drawmode(DRMODE_COMPLEMENT); \
 315     rb->lcd_fillrect( left+x*TileSize, top+y*TileSize, TileSize, TileSize ); \
 316     rb->lcd_set_drawmode(DRMODE_SOLID);
 317
 318
 319 /* the tile struct
 320  * if there is a mine, mine is true
 321  * if tile is known by player, known is true
 322  * if tile has a flag, flag is true
 323  * neighbors is the total number of mines arround tile
 324  */
 325 typedef struct tile
 326 {
 327     unsigned char mine : 1;
 328     unsigned char known : 1;
 329     unsigned char flag : 1;
 330     unsigned char neighbors : 4;
 331 } tile;
 332
 333 /* the height and width of the field */
 334 #define MAX_HEIGHT (LCD_HEIGHT/TileSize)
 335 #define MAX_WIDTH  (LCD_WIDTH/TileSize)
 336 int height = MAX_HEIGHT;
 337 int width = MAX_WIDTH;
 338 int top;
 339 int left;
 340
 341 /* The Minefield. Caution it is defined as Y, X! Not the opposite. */
 342 tile minefield[MAX_HEIGHT][MAX_WIDTH];
 343
 344 /* total number of mines on the game */
 345 int mine_num = 0;
 346
 347 /* percentage of mines on minefield used during generation */
 348 int p = 16;
 349
 350 /* number of tiles left on the game */
 351 int tiles_left;
 352
 353 /* number of used flags on the game */
 354 int flags_used;
 355
 356 /* Because mines are set after the first move... */
 357 bool no_mines = true;
 358
 359 /* We need a stack (created on discover()) for the cascade algorithm. */
 360 int stack_pos = 0;
 361
 362 /* a usefull string for snprintf */
 363 char str[30];
 364
 365 #ifdef HAVE_TOUCHSCREEN
 366
 367 #include "lib/pluginlib_touchscreen.h"
 368 static struct ts_raster mine_raster = { 0, 0, MAX_WIDTH, MAX_HEIGHT, TileSize, TileSize };
 369 #endif
 370
 371
 372 void push( int *stack, int y, int x )
 373 {
 374     if( stack_pos <= height*width )
 375     {
 376         stack[++stack_pos] = y;
 377         stack[++stack_pos] = x;
 378     }
 379 }
 380
 381 /* Unveil tiles and push them to stack if they are empty. */
 382 void unveil( int *stack, int y, int x )
 383 {
 384     if( x < 0 || y < 0 || x > width - 1 || y > height - 1
 385        || minefield[y][x].known
 386        || minefield[y][x].mine || minefield[y][x].flag ) return;
 387
 388     minefield[y][x].known = 1;
 389
 390     if( minefield[y][x].neighbors == 0 )
 391         push( stack, y, x );
 392 }
 393
 394 int is_flagged( int y, int x )
 395 {
 396     if( x >= 0 && y >= 0 && x < width && y < height && minefield[y][x].flag )
 397         return 1;
 398     return 0;
 399 }
 400
 401 int neighbors_flagged( int y, int x )
 402 {
 403     return is_flagged( y-1, x-1 ) +
 404            is_flagged( y-1, x ) +
 405            is_flagged( y-1, x+1 ) +
 406            is_flagged( y, x-1 ) +
 407            is_flagged( y, x ) +
 408            is_flagged( y, x+1 ) +
 409            is_flagged( y+1, x-1 ) +
 410            is_flagged( y+1, x ) +
 411            is_flagged( y+1, x+1 );
 412 }
 413
 414 bool discover( int y, int x, bool explore_neighbors )
 415 {
 416     /* Selected tile. */
 417     if( x < 0 || y < 0 || x > width - 1 || y > height - 1
 418        || minefield[y][x].known
 419        || minefield[y][x].mine || minefield[y][x].flag )
 420     {
 421         if( !minefield[y][x].flag && minefield[y][x].mine )
 422             return true;
 423
 424         if( explore_neighbors && minefield[y][x].known &&
 425             minefield[y][x].neighbors == neighbors_flagged( y, x ) )
 426         {
 427             return discover( y-1, x-1, false ) ||
 428                    discover( y-1, x, false ) ||
 429                    discover( y-1, x+1, false ) ||
 430                    discover( y, x-1, false ) ||
 431                    discover( y, x, false ) ||
 432                    discover( y, x+1, false ) ||
 433                    discover( y+1, x-1, false ) ||
 434                    discover( y+1, x, false ) ||
 435                    discover( y+1, x+1, false );
 436         }
 437
 438         return false;
 439     }
 440
 441     minefield[y][x].known = 1;
 442     /* Exit if the tile is not empty. (no mines nearby) */
 443     if( minefield[y][x].neighbors ) return false;
 444
 445     int stack[height*width];
 446
 447     push( stack, y, x );
 448
 449     /* Scan all nearby tiles. If we meet a tile with a number we just unveil
 450      * it. If we meet an empty tile, we push the location in stack. For each
 451      * location in stack we do the same thing. (scan again all nearby tiles)
 452      */
 453     while( stack_pos )
 454     {
 455         /* Pop x, y from stack. */
 456         x = stack[stack_pos--];
 457         y = stack[stack_pos--];
 458
 459         unveil( stack, y-1, x-1 );
 460         unveil( stack, y-1, x   );
 461         unveil( stack, y-1, x+1 );
 462         unveil( stack, y,   x+1 );
 463         unveil( stack, y+1, x+1 );
 464         unveil( stack, y+1, x   );
 465         unveil( stack, y+1, x-1 );
 466         unveil( stack, y,   x-1 );
 467     }
 468
 469     return false;
 470 }
 471
 472 /* Reset the whole board for a new game. */
 473 void minesweeper_init( void )
 474 {
 475     int i,j;
 476
 477     for( i = 0; i < MAX_HEIGHT; i++ )
 478     {
 479         for( j = 0; j < MAX_WIDTH; j++ )
 480         {
 481             minefield[i][j].known = 0;
 482             minefield[i][j].flag = 0;
 483             minefield[i][j].mine = 0;
 484             minefield[i][j].neighbors = 0;
 485         }
 486     }
 487     no_mines = true;
 488     tiles_left = width*height;
 489 }
 490
 491
 492 /* put mines on the mine field */
 493 /* there is p% chance that a tile is a mine */
 494 /* if the tile has coordinates (x,y), then it can't be a mine */
 495 void minesweeper_putmines( int p, int x, int y )
 496 {
 497     int i,j;
 498
 499     mine_num = 0;
 500     for( i = 0; i < height; i++ )
 501     {
 502         for( j = 0; j < width; j++ )
 503         {
 504             if( rb->rand()%100 < p && !( y==i && x==j ) )
 505             {
 506                 minefield[i][j].mine = 1;
 507                 mine_num++;
 508             }
 509             else
 510             {
 511                 minefield[i][j].mine = 0;
 512             }
 513             minefield[i][j].neighbors = 0;
 514         }
 515     }
 516
 517     /* we need to compute the neighbor element for each tile */
 518     for( i = 0; i < height; i++ )
 519     {
 520         for( j = 0; j < width; j++ )
 521         {
 522             if( i > 0 )
 523             {
 524                 if( j > 0 )
 525                     minefield[i][j].neighbors += minefield[i-1][j-1].mine;
 526                 minefield[i][j].neighbors += minefield[i-1][j].mine;
 527                 if( j < width - 1 )
 528                     minefield[i][j].neighbors += minefield[i-1][j+1].mine;
 529             }
 530             if( j > 0 )
 531                 minefield[i][j].neighbors += minefield[i][j-1].mine;
 532             if( j < width - 1 )
 533                 minefield[i][j].neighbors += minefield[i][j+1].mine;
 534             if( i < height - 1 )
 535             {
 536                 if( j > 0 )
 537                     minefield[i][j].neighbors += minefield[i+1][j-1].mine;
 538                 minefield[i][j].neighbors += minefield[i+1][j].mine;
 539                 if( j < width - 1 )
 540                     minefield[i][j].neighbors += minefield[i+1][j+1].mine;
 541             }
 542         }
 543     }
 544
 545     no_mines = false;
 546
 547     /* In case the user is lucky and there are no mines positioned. */
 548     if( !mine_num && height*width != 1 )
 549     {
 550         minesweeper_putmines(p, x, y);
 551     }
 552 }
 553
 554 /* A function that will uncover all the board, when the user wins or loses.
 555    can easily be expanded, (just a call assigned to a button) as a solver. */
 556 void mine_show( void )
 557 {
 558     int i, j, button;
 559
 560     for( i = 0; i < height; i++ )
 561     {
 562         for( j = 0; j < width; j++ )
 563         {
 564             if( minefield[i][j].mine )
 565             {
 566                 if( minefield[i][j].known )
 567                     draw_tile( ExplodedMine, j, i );
 568                 else if( minefield[i][j].flag )
 569                     draw_tile( CorrectFlag, j, i );
 570                 else
 571                     draw_tile( Mine, j, i );
 572             }
 573             else
 574             {
 575                 if( minefield[i][j].flag )
 576                     draw_tile( WrongFlag, j, i );
 577                 else
 578                     draw_tile( minefield[i][j].neighbors, j, i );
 579             }
 580         }
 581     }
 582     rb->lcd_update();
 583
 584     do
 585         button = rb->button_get(true);
 586     while( ( button == BUTTON_NONE )
 587            || ( button & (BUTTON_REL|BUTTON_REPEAT) ) );
 588 #ifdef HAVE_TOUCHSCREEN
 589     button = BUTTON_NONE;
 590 #endif
 591 }
 592
 593 int count_tiles_left( void )
 594 {
 595     int tiles_left = 0;
 596     int i, j;
 597     for( i = 0; i < height; i++ )
 598         for( j = 0; j < width; j++ )
 599              if( minefield[i][j].known == 0 )
 600                 tiles_left++;
 601     return tiles_left;
 602 }
 603
 604 int count_flags( void )
 605 {
 606     int flags_used = 0;
 607     int i, j;
 608     for( i = 0; i < height; i++ )
 609         for( j = 0; j < width; j++ )
 610              if( minefield[i][j].flag == 1 )
 611                 flags_used++;
 612     return flags_used;
 613 }
 614
 615 /* welcome screen where player can chose mine percentage */
 616 enum minesweeper_status menu( void )
 617 {
 618     int selection = 0, result = MINESWEEPER_QUIT;
 619     bool menu_quit = false;
 620
 621     MENUITEM_STRINGLIST( menu, "Minesweeper Menu", NULL, "Play Minesweeper",
 622                          "Mine Percentage", "Number of Rows",
 623                          "Number of Columns", "Playback Control", "Quit" );
 624
 625 #ifdef HAVE_LCD_COLOR
 626     rb->lcd_set_foreground( rb->global_settings->fg_color );
 627     rb->lcd_set_background( rb->global_settings->bg_color );
 628 #endif
 629
 630     while( !menu_quit )
 631     {
 632         switch( rb->do_menu( &menu, &selection, NULL, false ) )
 633         {
 634             case 0:
 635                 result = MINESWEEPER_WIN; /* start playing */
 636                 menu_quit = true;
 637                 break;
 638
 639             case 1:
 640                 rb->set_int( "Mine Percentage", "%", UNIT_INT, &p, NULL,
 641                              1, 2, 98, NULL );
 642                 break;
 643
 644             case 2:
 645                 rb->set_int( "Number of Rows", "", UNIT_INT, &height, NULL,
 646                              1, 1, MAX_HEIGHT, NULL );
 647                 break;
 648
 649             case 3:
 650                 rb->set_int( "Number of Columns", "", UNIT_INT, &width, NULL,
 651                              1, 1, MAX_WIDTH, NULL );
 652                 break;
 653
 654             case 4:
 655                 playback_control( NULL );
 656                 break;
 657
 658             default:
 659                 result = MINESWEEPER_QUIT; /* quit program */
 660                 menu_quit = true;
 661                 break;
 662         }
 663     }
 664
 665     return result;
 666 }
 667
 668 /* the big and ugly game function */
 669 enum minesweeper_status minesweeper( void )
 670 {
 671     int i, j;
 672     int button;
 673     int lastbutton = BUTTON_NONE;
 674
 675     /* the cursor coordinates */
 676     int x=0, y=0;
 677
 678     /**
 679      * Show the menu
 680      */
 681     if( ( i = menu() ) != MINESWEEPER_WIN ) return i;
 682
 683     /**
 684      * Init game
 685      */
 686     top = (LCD_HEIGHT-height*TileSize)/2;
 687     left = (LCD_WIDTH-width*TileSize)/2;
 688
 689 #ifdef HAVE_TOUCHSCREEN
 690     mine_raster.tl_x = left;
 691     mine_raster.tl_y = top;
 692     mine_raster.width = width*TileSize;
 693     mine_raster.height = height*TileSize;
 694 #endif
 695
 696     rb->srand( *rb->current_tick );
 697     minesweeper_init();
 698     x = 0;
 699     y = 0;
 700
 701     /**
 702      * Play
 703      */
 704     while( true )
 705     {
 706
 707         /* clear the screen buffer */
 708 #ifdef HAVE_LCD_COLOR
 709         rb->lcd_set_background( BackgroundColor );
 710 #endif
 711         rb->lcd_clear_display();
 712
 713         /* display the mine field */
 714         for( i = 0; i < height; i++ )
 715         {
 716             for( j = 0; j < width; j++ )
 717             {
 718                 if( minefield[i][j].known )
 719                 {
 720                     draw_tile( minefield[i][j].neighbors, j, i );
 721                 }
 722                 else if(minefield[i][j].flag)
 723                 {
 724                     draw_tile( Flag, j, i );
 725                 }
 726                 else
 727                 {
 728                     draw_tile( Unknown, j, i );
 729                 }
 730             }
 731         }
 732
 733         /* display the cursor */
 734         invert_tile( x, y );
 735
 736         /* update the screen */
 737         rb->lcd_update();
 738
 739         button = rb->button_get(true);
 740 #ifdef HAVE_TOUCHSCREEN
 741         if(button & BUTTON_TOUCHSCREEN)
 742         {
 743             struct ts_raster_result res;
 744             if(touchscreen_map_raster(&mine_raster, rb->button_get_data() >> 16, rb->button_get_data() & 0xffff, &res) == 1)
 745             {
 746                 button &= ~BUTTON_TOUCHSCREEN;
 747                 lastbutton &= ~BUTTON_TOUCHSCREEN;
 748
 749                 if(button & BUTTON_REPEAT && lastbutton != MINESWP_TOGGLE && lastbutton ^ BUTTON_REPEAT)
 750                     button = MINESWP_TOGGLE;
 751                 else if(button == BUTTON_REL && lastbutton ^ BUTTON_REPEAT)
 752                     button = MINESWP_DISCOVER;
 753                 else
 754                     button |= BUTTON_TOUCHSCREEN;
 755
 756                 x = res.x;
 757                 y = res.y;
 758             }
 759         }
 760 #endif
 761         switch(button)
 762         {
 763             /* quit minesweeper (you really shouldn't use this button ...) */
 764 #ifdef MINESWP_RC_QUIT
 765             case MINESWP_RC_QUIT:
 766 #endif
 767             case MINESWP_QUIT:
 768                 return MINESWEEPER_QUIT;
 769
 770             /* move cursor left */
 771             case MINESWP_LEFT:
 772             case MINESWP_LEFT|BUTTON_REPEAT:
 773                 x = ( x + width - 1 )%width;
 774                 break;
 775
 776             /* move cursor right */
 777             case MINESWP_RIGHT:
 778             case MINESWP_RIGHT|BUTTON_REPEAT:
 779                 x = ( x + 1 )%width;
 780                 break;
 781
 782             /* move cursor down */
 783             case MINESWP_DOWN:
 784             case MINESWP_DOWN|BUTTON_REPEAT:
 785                 y = ( y + 1 )%height;
 786                 break;
 787
 788             /* move cursor up */
 789             case MINESWP_UP:
 790             case MINESWP_UP|BUTTON_REPEAT:
 791                 y = ( y + height - 1 )%height;
 792                 break;
 793
 794             /*move cursor though the entire field*/
 795 #ifdef MINESWP_SCROLLWHEEL
 796             case MINESWP_NEXT:
 797             case MINESWP_NEXT|BUTTON_REPEAT:
 798                 if (x == width -1 ) {
 799                     y = ( y + 1 )%height;
 800                 }
 801                 x = ( x + 1 )%width;
 802                 break;
 803
 804             case MINESWP_PREV:
 805             case MINESWP_PREV|BUTTON_REPEAT:
 806                 if (x == 0) {
 807                     y = ( y + height - 1 )%height;
 808                 }
 809                 x = ( x + width - 1 )%width;
 810                 break;
 811 #endif
 812             /* discover a tile (and it's neighbors if .neighbors == 0) */
 813             case MINESWP_DISCOVER:
 814 #ifdef MINESWP_DISCOVER2
 815             case MINESWP_DISCOVER2:
 816 #endif
 817                 if( minefield[y][x].flag ) break;
 818                 /* we put the mines on the first "click" so that you don't
 819                  * lose on the first "click" */
 820                 if( tiles_left == width*height && no_mines )
 821                     minesweeper_putmines(p,x,y);
 822
 823                 if( discover( y, x, true ) )
 824                 {
 825                     minefield[y][x].known = 1;
 826                     return MINESWEEPER_LOSE;
 827                 }
 828
 829                 tiles_left = count_tiles_left();
 830                 if( tiles_left == mine_num )
 831                 {
 832                     return MINESWEEPER_WIN;
 833                 }
 834                 break;
 835
 836             /* toggle flag under cursor */
 837             case MINESWP_TOGGLE:
 838 #ifdef MINESWP_TOGGLE_PRE
 839                 if( lastbutton != MINESWP_TOGGLE_PRE )
 840                     break;
 841 #endif
 842 #ifdef MINESWP_TOGGLE2
 843             case MINESWP_TOGGLE2:
 844 #endif
 845                 minefield[y][x].flag = ( minefield[y][x].flag + 1 )%2;
 846                 break;
 847
 848             /* show how many mines you think you have found and how many
 849              * there really are on the game */
 850             case MINESWP_INFO:
 851                 if( no_mines )
 852                     break;
 853                 flags_used = count_flags();
 854                 if (flags_used == 1) {
 855                     rb->splashf( HZ*2, "You marked 1 field. There are %d mines.",
 856                                 mine_num );
 857                 }
 858                 else
 859                 {
 860                     rb->splashf( HZ*2, "You marked %d fields. There are %d mines.",
 861                                 flags_used, mine_num );
 862                 }
 863                 break;
 864
 865             default:
 866                 if( rb->default_event_handler( button ) == SYS_USB_CONNECTED )
 867                     return MINESWEEPER_USB;
 868                 break;
 869         }
 870         if( button != BUTTON_NONE )
 871             lastbutton = button;
 872     }
 873
 874 }
 875
 876 /* plugin entry point */
 877 enum plugin_status plugin_start(const void* parameter)
 878 {
 879     bool exit = false;
 880
 881     (void)parameter;
 882 #if LCD_DEPTH > 1
 883     rb->lcd_set_backdrop(NULL);
 884 #endif
 885
 886     while( !exit )
 887     {
 888         switch( minesweeper() )
 889         {
 890             case MINESWEEPER_WIN:
 891                 rb->splash( HZ, "You Win!" );
 892                 rb->lcd_clear_display();
 893                 mine_show();
 894                 break;
 895
 896             case MINESWEEPER_LOSE:
 897                 rb->splash( HZ, "You Lose!" );
 898                 rb->lcd_clear_display();
 899                 mine_show();
 900                 break;
 901
 902             case MINESWEEPER_USB:
 903                 return PLUGIN_USB_CONNECTED;
 904
 905             case MINESWEEPER_QUIT:
 906                 exit = true;
 907                 break;
 908
 909             default:
 910                 break;
 911         }
 912     }
 913
 914     return PLUGIN_OK;
 915 }
 916
 917 #endif