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 #elif (CONFIG_KEYPAD == PBELL_VIBE500_PAD)
 253 #   define MINESWP_LEFT     BUTTON_PREV
 254 #   define MINESWP_RIGHT    BUTTON_NEXT
 255 #   define MINESWP_UP       BUTTON_UP
 256 #   define MINESWP_DOWN     BUTTON_DOWN
 257 #   define MINESWP_QUIT     BUTTON_REC
 258 #   define MINESWP_TOGGLE   BUTTON_PLAY
 259 #   define MINESWP_DISCOVER BUTTON_OK
 260 #   define MINESWP_INFO     BUTTON_MENU
 261
 262 #else
 263 #error No keymap defined!
 264 #endif
 265
 266 #ifdef HAVE_TOUCHSCREEN
 267 #ifndef MINESWP_QUIT
 268 #   define MINESWP_QUIT     BUTTON_TOPLEFT
 269 #endif
 270 #ifndef MINESWP_LEFT
 271 #   define MINESWP_LEFT     BUTTON_MIDLEFT
 272 #endif
 273 #ifndef MINESWP_RIGHT
 274 #   define MINESWP_RIGHT    BUTTON_MIDRIGHT
 275 #endif
 276 #ifndef MINESWP_UP
 277 #   define MINESWP_UP       BUTTON_TOPMIDDLE
 278 #endif
 279 #ifndef MINESWP_DOWN
 280 #   define MINESWP_DOWN     BUTTON_BOTTOMMIDDLE
 281 #endif
 282 #ifndef MINESWP_TOGGLE
 283 #   define MINESWP_TOGGLE   BUTTON_CENTER
 284 #endif
 285 #ifndef MINESWP_DISCOVER
 286 #   define MINESWP_DISCOVER BUTTON_BOTTOMLEFT
 287 #endif
 288 #ifndef MINESWP_INFO
 289 #   define MINESWP_INFO     BUTTON_BOTTOMRIGHT
 290 #endif
 291 #endif
 292
 293 extern const fb_data minesweeper_tiles[];
 294
 295 #ifdef HAVE_LCD_COLOR
 296 #   if ( LCD_HEIGHT * LCD_WIDTH ) / ( 16 * 16 ) >= 130
 297         /* We want to have at least 130 tiles on the screen */
 298 #       define TileSize 16
 299 #   elif ( LCD_HEIGHT * LCD_WIDTH ) / ( 12 * 12 ) >= 130
 300 #       define TileSize 12
 301 #   else
 302 #       define TileSize 10
 303 #   endif
 304 #   define BackgroundColor LCD_RGBPACK( 128, 128, 128 )
 305 #elif LCD_DEPTH > 1
 306 #   define TileSize 12
 307 #else
 308 #   define TileSize 8
 309 #endif
 310
 311 #define Mine         9
 312 #define Flag         10
 313 #define Unknown      11
 314 #define ExplodedMine 12
 315 #define WrongFlag    13
 316 #define CorrectFlag  14
 317
 318 #define draw_tile( num, x, y ) \
 319     rb->lcd_bitmap_part( minesweeper_tiles, 0, num * TileSize, \
 320                          TileSize, left+x*TileSize, top+y*TileSize, \
 321                          TileSize, TileSize )
 322
 323 #define invert_tile( x, y ) \
 324     rb->lcd_set_drawmode(DRMODE_COMPLEMENT); \
 325     rb->lcd_fillrect( left+x*TileSize, top+y*TileSize, TileSize, TileSize ); \
 326     rb->lcd_set_drawmode(DRMODE_SOLID);
 327
 328
 329 /* the tile struct
 330  * if there is a mine, mine is true
 331  * if tile is known by player, known is true
 332  * if tile has a flag, flag is true
 333  * neighbors is the total number of mines arround tile
 334  */
 335 typedef struct tile
 336 {
 337     unsigned char mine : 1;
 338     unsigned char known : 1;
 339     unsigned char flag : 1;
 340     unsigned char neighbors : 4;
 341 } tile;
 342
 343 /* the height and width of the field */
 344 #define MAX_HEIGHT (LCD_HEIGHT/TileSize)
 345 #define MAX_WIDTH  (LCD_WIDTH/TileSize)
 346 int height = MAX_HEIGHT;
 347 int width = MAX_WIDTH;
 348 int top;
 349 int left;
 350
 351 /* The Minefield. Caution it is defined as Y, X! Not the opposite. */
 352 tile minefield[MAX_HEIGHT][MAX_WIDTH];
 353
 354 /* total number of mines on the game */
 355 int mine_num = 0;
 356
 357 /* percentage of mines on minefield used during generation */
 358 int p = 16;
 359
 360 /* number of tiles left on the game */
 361 int tiles_left;
 362
 363 /* number of used flags on the game */
 364 int flags_used;
 365
 366 /* Because mines are set after the first move... */
 367 bool no_mines = true;
 368
 369 /* We need a stack (created on discover()) for the cascade algorithm. */
 370 int stack_pos = 0;
 371
 372 /* a usefull string for snprintf */
 373 char str[30];
 374
 375 #ifdef HAVE_TOUCHSCREEN
 376
 377 #include "lib/pluginlib_touchscreen.h"
 378 static struct ts_raster mine_raster = { 0, 0, MAX_WIDTH, MAX_HEIGHT, TileSize, TileSize };
 379 #endif
 380
 381
 382 void push( int *stack, int y, int x )
 383 {
 384     if( stack_pos <= height*width )
 385     {
 386         stack[++stack_pos] = y;
 387         stack[++stack_pos] = x;
 388     }
 389 }
 390
 391 /* Unveil tiles and push them to stack if they are empty. */
 392 void unveil( int *stack, int y, int x )
 393 {
 394     if( x < 0 || y < 0 || x > width - 1 || y > height - 1
 395        || minefield[y][x].known
 396        || minefield[y][x].mine || minefield[y][x].flag ) return;
 397
 398     minefield[y][x].known = 1;
 399
 400     if( minefield[y][x].neighbors == 0 )
 401         push( stack, y, x );
 402 }
 403
 404 int is_flagged( int y, int x )
 405 {
 406     if( x >= 0 && y >= 0 && x < width && y < height && minefield[y][x].flag )
 407         return 1;
 408     return 0;
 409 }
 410
 411 int neighbors_flagged( int y, int x )
 412 {
 413     return is_flagged( y-1, x-1 ) +
 414            is_flagged( y-1, x ) +
 415            is_flagged( y-1, x+1 ) +
 416            is_flagged( y, x-1 ) +
 417            is_flagged( y, x ) +
 418            is_flagged( y, x+1 ) +
 419            is_flagged( y+1, x-1 ) +
 420            is_flagged( y+1, x ) +
 421            is_flagged( y+1, x+1 );
 422 }
 423
 424 bool discover( int y, int x, bool explore_neighbors )
 425 {
 426     /* Selected tile. */
 427     if( x < 0 || y < 0 || x > width - 1 || y > height - 1
 428        || minefield[y][x].known
 429        || minefield[y][x].mine || minefield[y][x].flag )
 430     {
 431         if( !minefield[y][x].flag && minefield[y][x].mine )
 432             return true;
 433
 434         if( explore_neighbors && minefield[y][x].known &&
 435             minefield[y][x].neighbors == neighbors_flagged( y, x ) )
 436         {
 437             return discover( y-1, x-1, false ) ||
 438                    discover( y-1, x, false ) ||
 439                    discover( y-1, x+1, false ) ||
 440                    discover( y, x-1, false ) ||
 441                    discover( y, x, false ) ||
 442                    discover( y, x+1, false ) ||
 443                    discover( y+1, x-1, false ) ||
 444                    discover( y+1, x, false ) ||
 445                    discover( y+1, x+1, false );
 446         }
 447
 448         return false;
 449     }
 450
 451     minefield[y][x].known = 1;
 452     /* Exit if the tile is not empty. (no mines nearby) */
 453     if( minefield[y][x].neighbors ) return false;
 454
 455     int stack[height*width];
 456
 457     push( stack, y, x );
 458
 459     /* Scan all nearby tiles. If we meet a tile with a number we just unveil
 460      * it. If we meet an empty tile, we push the location in stack. For each
 461      * location in stack we do the same thing. (scan again all nearby tiles)
 462      */
 463     while( stack_pos )
 464     {
 465         /* Pop x, y from stack. */
 466         x = stack[stack_pos--];
 467         y = stack[stack_pos--];
 468
 469         unveil( stack, y-1, x-1 );
 470         unveil( stack, y-1, x   );
 471         unveil( stack, y-1, x+1 );
 472         unveil( stack, y,   x+1 );
 473         unveil( stack, y+1, x+1 );
 474         unveil( stack, y+1, x   );
 475         unveil( stack, y+1, x-1 );
 476         unveil( stack, y,   x-1 );
 477     }
 478
 479     return false;
 480 }
 481
 482 /* Reset the whole board for a new game. */
 483 void minesweeper_init( void )
 484 {
 485     int i,j;
 486
 487     for( i = 0; i < MAX_HEIGHT; i++ )
 488     {
 489         for( j = 0; j < MAX_WIDTH; j++ )
 490         {
 491             minefield[i][j].known = 0;
 492             minefield[i][j].flag = 0;
 493             minefield[i][j].mine = 0;
 494             minefield[i][j].neighbors = 0;
 495         }
 496     }
 497     no_mines = true;
 498     tiles_left = width*height;
 499 }
 500
 501
 502 /* put mines on the mine field */
 503 /* there is p% chance that a tile is a mine */
 504 /* if the tile has coordinates (x,y), then it can't be a mine */
 505 void minesweeper_putmines( int p, int x, int y )
 506 {
 507     int i,j;
 508
 509     mine_num = 0;
 510     for( i = 0; i < height; i++ )
 511     {
 512         for( j = 0; j < width; j++ )
 513         {
 514             if( rb->rand()%100 < p && !( y==i && x==j ) )
 515             {
 516                 minefield[i][j].mine = 1;
 517                 mine_num++;
 518             }
 519             else
 520             {
 521                 minefield[i][j].mine = 0;
 522             }
 523             minefield[i][j].neighbors = 0;
 524         }
 525     }
 526
 527     /* we need to compute the neighbor element for each tile */
 528     for( i = 0; i < height; i++ )
 529     {
 530         for( j = 0; j < width; j++ )
 531         {
 532             if( i > 0 )
 533             {
 534                 if( j > 0 )
 535                     minefield[i][j].neighbors += minefield[i-1][j-1].mine;
 536                 minefield[i][j].neighbors += minefield[i-1][j].mine;
 537                 if( j < width - 1 )
 538                     minefield[i][j].neighbors += minefield[i-1][j+1].mine;
 539             }
 540             if( j > 0 )
 541                 minefield[i][j].neighbors += minefield[i][j-1].mine;
 542             if( j < width - 1 )
 543                 minefield[i][j].neighbors += minefield[i][j+1].mine;
 544             if( i < height - 1 )
 545             {
 546                 if( j > 0 )
 547                     minefield[i][j].neighbors += minefield[i+1][j-1].mine;
 548                 minefield[i][j].neighbors += minefield[i+1][j].mine;
 549                 if( j < width - 1 )
 550                     minefield[i][j].neighbors += minefield[i+1][j+1].mine;
 551             }
 552         }
 553     }
 554
 555     no_mines = false;
 556
 557     /* In case the user is lucky and there are no mines positioned. */
 558     if( !mine_num && height*width != 1 )
 559     {
 560         minesweeper_putmines(p, x, y);
 561     }
 562 }
 563
 564 /* A function that will uncover all the board, when the user wins or loses.
 565    can easily be expanded, (just a call assigned to a button) as a solver. */
 566 void mine_show( void )
 567 {
 568     int i, j, button;
 569
 570     for( i = 0; i < height; i++ )
 571     {
 572         for( j = 0; j < width; j++ )
 573         {
 574             if( minefield[i][j].mine )
 575             {
 576                 if( minefield[i][j].known )
 577                     draw_tile( ExplodedMine, j, i );
 578                 else if( minefield[i][j].flag )
 579                     draw_tile( CorrectFlag, j, i );
 580                 else
 581                     draw_tile( Mine, j, i );
 582             }
 583             else
 584             {
 585                 if( minefield[i][j].flag )
 586                     draw_tile( WrongFlag, j, i );
 587                 else
 588                     draw_tile( minefield[i][j].neighbors, j, i );
 589             }
 590         }
 591     }
 592     rb->lcd_update();
 593
 594     do
 595         button = rb->button_get(true);
 596     while( ( button == BUTTON_NONE )
 597            || ( button & (BUTTON_REL|BUTTON_REPEAT) ) );
 598 #ifdef HAVE_TOUCHSCREEN
 599     button = BUTTON_NONE;
 600 #endif
 601 }
 602
 603 int count_tiles_left( void )
 604 {
 605     int tiles_left = 0;
 606     int i, j;
 607     for( i = 0; i < height; i++ )
 608         for( j = 0; j < width; j++ )
 609              if( minefield[i][j].known == 0 )
 610                 tiles_left++;
 611     return tiles_left;
 612 }
 613
 614 int count_flags( void )
 615 {
 616     int flags_used = 0;
 617     int i, j;
 618     for( i = 0; i < height; i++ )
 619         for( j = 0; j < width; j++ )
 620              if( minefield[i][j].flag == 1 )
 621                 flags_used++;
 622     return flags_used;
 623 }
 624
 625 /* welcome screen where player can chose mine percentage */
 626 enum minesweeper_status menu( void )
 627 {
 628     int selection = 0, result = MINESWEEPER_QUIT;
 629     bool menu_quit = false;
 630
 631     MENUITEM_STRINGLIST( menu, "Minesweeper Menu", NULL, "Play Minesweeper",
 632                          "Mine Percentage", "Number of Rows",
 633                          "Number of Columns", "Playback Control", "Quit" );
 634
 635 #ifdef HAVE_LCD_COLOR
 636     rb->lcd_set_foreground( rb->global_settings->fg_color );
 637     rb->lcd_set_background( rb->global_settings->bg_color );
 638 #endif
 639
 640     while( !menu_quit )
 641     {
 642         switch( rb->do_menu( &menu, &selection, NULL, false ) )
 643         {
 644             case 0:
 645                 result = MINESWEEPER_WIN; /* start playing */
 646                 menu_quit = true;
 647                 break;
 648
 649             case 1:
 650                 rb->set_int( "Mine Percentage", "%", UNIT_INT, &p, NULL,
 651                              1, 2, 98, NULL );
 652                 break;
 653
 654             case 2:
 655                 rb->set_int( "Number of Rows", "", UNIT_INT, &height, NULL,
 656                              1, 1, MAX_HEIGHT, NULL );
 657                 break;
 658
 659             case 3:
 660                 rb->set_int( "Number of Columns", "", UNIT_INT, &width, NULL,
 661                              1, 1, MAX_WIDTH, NULL );
 662                 break;
 663
 664             case 4:
 665                 playback_control( NULL );
 666                 break;
 667
 668             default:
 669                 result = MINESWEEPER_QUIT; /* quit program */
 670                 menu_quit = true;
 671                 break;
 672         }
 673     }
 674
 675     return result;
 676 }
 677
 678 /* the big and ugly game function */
 679 enum minesweeper_status minesweeper( void )
 680 {
 681     int i, j;
 682     int button;
 683     int lastbutton = BUTTON_NONE;
 684
 685     /* the cursor coordinates */
 686     int x=0, y=0;
 687
 688     /**
 689      * Show the menu
 690      */
 691     if( ( i = menu() ) != MINESWEEPER_WIN ) return i;
 692
 693     /**
 694      * Init game
 695      */
 696     top = (LCD_HEIGHT-height*TileSize)/2;
 697     left = (LCD_WIDTH-width*TileSize)/2;
 698
 699 #ifdef HAVE_TOUCHSCREEN
 700     mine_raster.tl_x = left;
 701     mine_raster.tl_y = top;
 702     mine_raster.width = width*TileSize;
 703     mine_raster.height = height*TileSize;
 704 #endif
 705
 706     rb->srand( *rb->current_tick );
 707     minesweeper_init();
 708     x = 0;
 709     y = 0;
 710
 711     /**
 712      * Play
 713      */
 714     while( true )
 715     {
 716
 717         /* clear the screen buffer */
 718 #ifdef HAVE_LCD_COLOR
 719         rb->lcd_set_background( BackgroundColor );
 720 #endif
 721         rb->lcd_clear_display();
 722
 723         /* display the mine field */
 724         for( i = 0; i < height; i++ )
 725         {
 726             for( j = 0; j < width; j++ )
 727             {
 728                 if( minefield[i][j].known )
 729                 {
 730                     draw_tile( minefield[i][j].neighbors, j, i );
 731                 }
 732                 else if(minefield[i][j].flag)
 733                 {
 734                     draw_tile( Flag, j, i );
 735                 }
 736                 else
 737                 {
 738                     draw_tile( Unknown, j, i );
 739                 }
 740             }
 741         }
 742
 743         /* display the cursor */
 744         invert_tile( x, y );
 745
 746         /* update the screen */
 747         rb->lcd_update();
 748
 749         button = rb->button_get(true);
 750 #ifdef HAVE_TOUCHSCREEN
 751         if(button & BUTTON_TOUCHSCREEN)
 752         {
 753             struct ts_raster_result res;
 754             if(touchscreen_map_raster(&mine_raster, rb->button_get_data() >> 16, rb->button_get_data() & 0xffff, &res) == 1)
 755             {
 756                 button &= ~BUTTON_TOUCHSCREEN;
 757                 lastbutton &= ~BUTTON_TOUCHSCREEN;
 758
 759                 if(button & BUTTON_REPEAT && lastbutton != MINESWP_TOGGLE && lastbutton ^ BUTTON_REPEAT)
 760                     button = MINESWP_TOGGLE;
 761                 else if(button == BUTTON_REL && lastbutton ^ BUTTON_REPEAT)
 762                     button = MINESWP_DISCOVER;
 763                 else
 764                     button |= BUTTON_TOUCHSCREEN;
 765
 766                 x = res.x;
 767                 y = res.y;
 768             }
 769         }
 770 #endif
 771         switch(button)
 772         {
 773             /* quit minesweeper (you really shouldn't use this button ...) */
 774 #ifdef MINESWP_RC_QUIT
 775             case MINESWP_RC_QUIT:
 776 #endif
 777             case MINESWP_QUIT:
 778                 return MINESWEEPER_QUIT;
 779
 780             /* move cursor left */
 781             case MINESWP_LEFT:
 782             case MINESWP_LEFT|BUTTON_REPEAT:
 783                 x = ( x + width - 1 )%width;
 784                 break;
 785
 786             /* move cursor right */
 787             case MINESWP_RIGHT:
 788             case MINESWP_RIGHT|BUTTON_REPEAT:
 789                 x = ( x + 1 )%width;
 790                 break;
 791
 792             /* move cursor down */
 793             case MINESWP_DOWN:
 794             case MINESWP_DOWN|BUTTON_REPEAT:
 795                 y = ( y + 1 )%height;
 796                 break;
 797
 798             /* move cursor up */
 799             case MINESWP_UP:
 800             case MINESWP_UP|BUTTON_REPEAT:
 801                 y = ( y + height - 1 )%height;
 802                 break;
 803
 804             /*move cursor though the entire field*/
 805 #ifdef MINESWP_SCROLLWHEEL
 806             case MINESWP_NEXT:
 807             case MINESWP_NEXT|BUTTON_REPEAT:
 808                 if (x == width -1 ) {
 809                     y = ( y + 1 )%height;
 810                 }
 811                 x = ( x + 1 )%width;
 812                 break;
 813
 814             case MINESWP_PREV:
 815             case MINESWP_PREV|BUTTON_REPEAT:
 816                 if (x == 0) {
 817                     y = ( y + height - 1 )%height;
 818                 }
 819                 x = ( x + width - 1 )%width;
 820                 break;
 821 #endif
 822             /* discover a tile (and it's neighbors if .neighbors == 0) */
 823             case MINESWP_DISCOVER:
 824 #ifdef MINESWP_DISCOVER2
 825             case MINESWP_DISCOVER2:
 826 #endif
 827                 if( minefield[y][x].flag ) break;
 828                 /* we put the mines on the first "click" so that you don't
 829                  * lose on the first "click" */
 830                 if( tiles_left == width*height && no_mines )
 831                     minesweeper_putmines(p,x,y);
 832
 833                 if( discover( y, x, true ) )
 834                 {
 835                     minefield[y][x].known = 1;
 836                     return MINESWEEPER_LOSE;
 837                 }
 838
 839                 tiles_left = count_tiles_left();
 840                 if( tiles_left == mine_num )
 841                 {
 842                     return MINESWEEPER_WIN;
 843                 }
 844                 break;
 845
 846             /* toggle flag under cursor */
 847             case MINESWP_TOGGLE:
 848 #ifdef MINESWP_TOGGLE_PRE
 849                 if( lastbutton != MINESWP_TOGGLE_PRE )
 850                     break;
 851 #endif
 852 #ifdef MINESWP_TOGGLE2
 853             case MINESWP_TOGGLE2:
 854 #endif
 855                 minefield[y][x].flag = ( minefield[y][x].flag + 1 )%2;
 856                 break;
 857
 858             /* show how many mines you think you have found and how many
 859              * there really are on the game */
 860             case MINESWP_INFO:
 861                 if( no_mines )
 862                     break;
 863                 flags_used = count_flags();
 864                 if (flags_used == 1) {
 865                     rb->splashf( HZ*2, "You marked 1 field. There are %d mines.",
 866                                 mine_num );
 867                 }
 868                 else
 869                 {
 870                     rb->splashf( HZ*2, "You marked %d fields. There are %d mines.",
 871                                 flags_used, mine_num );
 872                 }
 873                 break;
 874
 875             default:
 876                 if( rb->default_event_handler( button ) == SYS_USB_CONNECTED )
 877                     return MINESWEEPER_USB;
 878                 break;
 879         }
 880         if( button != BUTTON_NONE )
 881             lastbutton = button;
 882     }
 883
 884 }
 885
 886 /* plugin entry point */
 887 enum plugin_status plugin_start(const void* parameter)
 888 {
 889     bool exit = false;
 890
 891     (void)parameter;
 892 #if LCD_DEPTH > 1
 893     rb->lcd_set_backdrop(NULL);
 894 #endif
 895
 896     while( !exit )
 897     {
 898         switch( minesweeper() )
 899         {
 900             case MINESWEEPER_WIN:
 901                 rb->splash( HZ, "You Win!" );
 902                 rb->lcd_clear_display();
 903                 mine_show();
 904                 break;
 905
 906             case MINESWEEPER_LOSE:
 907                 rb->splash( HZ, "You Lose!" );
 908                 rb->lcd_clear_display();
 909                 mine_show();
 910                 break;
 911
 912             case MINESWEEPER_USB:
 913                 return PLUGIN_USB_CONNECTED;
 914
 915             case MINESWEEPER_QUIT:
 916                 exit = true;
 917                 break;
 918
 919             default:
 920                 break;
 921         }
 922     }
 923
 924     return PLUGIN_OK;
 925 }
 926
 927 #endif