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 == COWOND2_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 == ONDAVX747_PAD)
 228 #   define MINESWP_QUIT     BUTTON_POWER
 229
 230 #else
 231 #error No keymap defined!
 232 #endif
 233
 234 #ifdef HAVE_TOUCHSCREEN
 235 #ifndef MINESWP_QUIT
 236 #   define MINESWP_QUIT     BUTTON_TOPLEFT
 237 #endif
 238 #ifndef MINESWP_LEFT
 239 #   define MINESWP_LEFT     BUTTON_MIDLEFT
 240 #endif
 241 #ifndef MINESWP_RIGHT
 242 #   define MINESWP_RIGHT    BUTTON_MIDRIGHT
 243 #endif
 244 #ifndef MINESWP_UP
 245 #   define MINESWP_UP       BUTTON_TOPMIDDLE
 246 #endif
 247 #ifndef MINESWP_DOWN
 248 #   define MINESWP_DOWN     BUTTON_BOTTOMMIDDLE
 249 #endif
 250 #ifndef MINESWP_TOGGLE
 251 #   define MINESWP_TOGGLE   BUTTON_CENTER
 252 #endif
 253 #ifndef MINESWP_DISCOVER
 254 #   define MINESWP_DISCOVER BUTTON_BOTTOMLEFT
 255 #endif
 256 #ifndef MINESWP_INFO
 257 #   define MINESWP_INFO     BUTTON_BOTTOMRIGHT
 258 #endif
 259 #endif
 260
 261 extern const fb_data minesweeper_tiles[];
 262
 263 #ifdef HAVE_LCD_COLOR
 264 #   if ( LCD_HEIGHT * LCD_WIDTH ) / ( 16 * 16 ) >= 130
 265         /* We want to have at least 130 tiles on the screen */
 266 #       define TileSize 16
 267 #   elif ( LCD_HEIGHT * LCD_WIDTH ) / ( 12 * 12 ) >= 130
 268 #       define TileSize 12
 269 #   else
 270 #       define TileSize 10
 271 #   endif
 272 #   define BackgroundColor LCD_RGBPACK( 128, 128, 128 )
 273 #elif LCD_DEPTH > 1
 274 #   define TileSize 12
 275 #else
 276 #   define TileSize 8
 277 #endif
 278
 279 #define Mine         9
 280 #define Flag         10
 281 #define Unknown      11
 282 #define ExplodedMine 12
 283
 284 #define draw_tile( num, x, y ) \
 285     rb->lcd_bitmap_part( minesweeper_tiles, 0, num * TileSize, \
 286                          TileSize, left+x*TileSize, top+y*TileSize, \
 287                          TileSize, TileSize )
 288
 289 #define invert_tile( x, y ) \
 290     rb->lcd_set_drawmode(DRMODE_COMPLEMENT); \
 291     rb->lcd_fillrect( left+x*TileSize, top+y*TileSize, TileSize, TileSize ); \
 292     rb->lcd_set_drawmode(DRMODE_SOLID);
 293
 294
 295 /* the tile struct
 296  * if there is a mine, mine is true
 297  * if tile is known by player, known is true
 298  * if tile has a flag, flag is true
 299  * neighbors is the total number of mines arround tile
 300  */
 301 typedef struct tile
 302 {
 303     unsigned char mine : 1;
 304     unsigned char known : 1;
 305     unsigned char flag : 1;
 306     unsigned char neighbors : 4;
 307 } tile;
 308
 309 /* the height and width of the field */
 310 #define MAX_HEIGHT (LCD_HEIGHT/TileSize)
 311 #define MAX_WIDTH  (LCD_WIDTH/TileSize)
 312 int height = MAX_HEIGHT;
 313 int width = MAX_WIDTH;
 314 int top;
 315 int left;
 316
 317 /* The Minefield. Caution it is defined as Y, X! Not the opposite. */
 318 tile minefield[MAX_HEIGHT][MAX_WIDTH];
 319
 320 /* total number of mines on the game */
 321 int mine_num = 0;
 322
 323 /* percentage of mines on minefield used during generation */
 324 int p = 16;
 325
 326 /* number of tiles left on the game */
 327 int tiles_left;
 328
 329 /* number of used flags on the game */
 330 int flags_used;
 331
 332 /* Because mines are set after the first move... */
 333 bool no_mines = true;
 334
 335 /* We need a stack (created on discover()) for the cascade algorithm. */
 336 int stack_pos = 0;
 337
 338 /* a usefull string for snprintf */
 339 char str[30];
 340
 341 #ifdef HAVE_TOUCHSCREEN
 342
 343 #include "lib/touchscreen.h"
 344 static struct ts_raster mine_raster = { 0, 0, MAX_WIDTH, MAX_HEIGHT, TileSize, TileSize };
 345 #endif
 346
 347
 348 void push( int *stack, int y, int x )
 349 {
 350     if( stack_pos <= height*width )
 351     {
 352         stack[++stack_pos] = y;
 353         stack[++stack_pos] = x;
 354     }
 355 }
 356
 357 /* Unveil tiles and push them to stack if they are empty. */
 358 void unveil( int *stack, int y, int x )
 359 {
 360     if( x < 0 || y < 0 || x > width - 1 || y > height - 1
 361        || minefield[y][x].known
 362        || minefield[y][x].mine || minefield[y][x].flag ) return;
 363
 364     minefield[y][x].known = 1;
 365
 366     if( minefield[y][x].neighbors == 0 )
 367         push( stack, y, x );
 368 }
 369
 370 void discover( int y, int x )
 371 {
 372     int stack[height*width];
 373
 374     /* Selected tile. */
 375     if( x < 0 || y < 0 || x > width - 1 || y > height - 1
 376        || minefield[y][x].known
 377        || minefield[y][x].mine || minefield[y][x].flag ) return;
 378
 379     minefield[y][x].known = 1;
 380     /* Exit if the tile is not empty. (no mines nearby) */
 381     if( minefield[y][x].neighbors ) return;
 382
 383     push( stack, y, x );
 384
 385     /* Scan all nearby tiles. If we meet a tile with a number we just unveil
 386      * it. If we meet an empty tile, we push the location in stack. For each
 387      * location in stack we do the same thing. (scan again all nearby tiles)
 388      */
 389     while( stack_pos )
 390     {
 391         /* Pop x, y from stack. */
 392         x = stack[stack_pos--];
 393         y = stack[stack_pos--];
 394
 395         unveil( stack, y-1, x-1 );
 396         unveil( stack, y-1, x   );
 397         unveil( stack, y-1, x+1 );
 398         unveil( stack, y,   x+1 );
 399         unveil( stack, y+1, x+1 );
 400         unveil( stack, y+1, x   );
 401         unveil( stack, y+1, x-1 );
 402         unveil( stack, y,   x-1 );
 403     }
 404 }
 405
 406 /* Reset the whole board for a new game. */
 407 void minesweeper_init( void )
 408 {
 409     int i,j;
 410
 411     for( i = 0; i < MAX_HEIGHT; i++ )
 412     {
 413         for( j = 0; j < MAX_WIDTH; j++ )
 414         {
 415             minefield[i][j].known = 0;
 416             minefield[i][j].flag = 0;
 417             minefield[i][j].mine = 0;
 418             minefield[i][j].neighbors = 0;
 419         }
 420     }
 421     no_mines = true;
 422     tiles_left = width*height;
 423 }
 424
 425
 426 /* put mines on the mine field */
 427 /* there is p% chance that a tile is a mine */
 428 /* if the tile has coordinates (x,y), then it can't be a mine */
 429 void minesweeper_putmines( int p, int x, int y )
 430 {
 431     int i,j;
 432
 433     mine_num = 0;
 434     for( i = 0; i < height; i++ )
 435     {
 436         for( j = 0; j < width; j++ )
 437         {
 438             if( rb->rand()%100 < p && !( y==i && x==j ) )
 439             {
 440                 minefield[i][j].mine = 1;
 441                 mine_num++;
 442             }
 443             else
 444             {
 445                 minefield[i][j].mine = 0;
 446             }
 447             minefield[i][j].neighbors = 0;
 448         }
 449     }
 450
 451     /* we need to compute the neighbor element for each tile */
 452     for( i = 0; i < height; i++ )
 453     {
 454         for( j = 0; j < width; j++ )
 455         {
 456             if( i > 0 )
 457             {
 458                 if( j > 0 )
 459                     minefield[i][j].neighbors += minefield[i-1][j-1].mine;
 460                 minefield[i][j].neighbors += minefield[i-1][j].mine;
 461                 if( j < width - 1 )
 462                     minefield[i][j].neighbors += minefield[i-1][j+1].mine;
 463             }
 464             if( j > 0 )
 465                 minefield[i][j].neighbors += minefield[i][j-1].mine;
 466             if( j < width - 1 )
 467                 minefield[i][j].neighbors += minefield[i][j+1].mine;
 468             if( i < height - 1 )
 469             {
 470                 if( j > 0 )
 471                     minefield[i][j].neighbors += minefield[i+1][j-1].mine;
 472                 minefield[i][j].neighbors += minefield[i+1][j].mine;
 473                 if( j < width - 1 )
 474                     minefield[i][j].neighbors += minefield[i+1][j+1].mine;
 475             }
 476         }
 477     }
 478
 479     no_mines = false;
 480
 481     /* In case the user is lucky and there are no mines positioned. */
 482     if( !mine_num && height*width != 1 )
 483     {
 484         minesweeper_putmines(p, x, y);
 485     }
 486 }
 487
 488 /* A function that will uncover all the board, when the user wins or loses.
 489    can easily be expanded, (just a call assigned to a button) as a solver. */
 490 void mine_show( void )
 491 {
 492     int i, j, button;
 493
 494     for( i = 0; i < height; i++ )
 495     {
 496         for( j = 0; j < width; j++ )
 497         {
 498             if( minefield[i][j].mine )
 499             {
 500                 if( minefield[i][j].known )
 501                 {
 502                     draw_tile( ExplodedMine, j, i );
 503                 }
 504                 else
 505                 {
 506                     draw_tile( Mine, j, i );
 507                 }
 508             }
 509             else
 510             {
 511                 draw_tile( minefield[i][j].neighbors, j, i );
 512             }
 513         }
 514     }
 515     rb->lcd_update();
 516
 517     do
 518         button = rb->button_get(true);
 519     while( ( button == BUTTON_NONE )
 520            || ( button & (BUTTON_REL|BUTTON_REPEAT) ) );
 521 #ifdef HAVE_TOUCHSCREEN
 522     button = BUTTON_NONE;
 523 #endif
 524 }
 525
 526 int count_tiles_left( void )
 527 {
 528     int tiles_left = 0;
 529     int i, j;
 530     for( i = 0; i < height; i++ )
 531         for( j = 0; j < width; j++ )
 532              if( minefield[i][j].known == 0 )
 533                 tiles_left++;
 534     return tiles_left;
 535 }
 536
 537 int count_flags( void )
 538 {
 539     int flags_used = 0;
 540     int i, j;
 541     for( i = 0; i < height; i++ )
 542         for( j = 0; j < width; j++ )
 543              if( minefield[i][j].flag == 1 )
 544                 flags_used++;
 545     return flags_used;
 546 }
 547
 548 /* welcome screen where player can chose mine percentage */
 549 enum minesweeper_status menu( void )
 550 {
 551     int selection, result = MINESWEEPER_QUIT;
 552     bool menu_quit = false;
 553
 554     MENUITEM_STRINGLIST( menu, "Minesweeper Menu", NULL, "Play Minesweeper",
 555                          "Mine Percentage", "Number of Rows",
 556                          "Number of Columns", "Playback Control", "Quit" );
 557
 558 #ifdef HAVE_LCD_COLOR
 559     rb->lcd_set_foreground( rb->global_settings->fg_color );
 560     rb->lcd_set_background( rb->global_settings->bg_color );
 561 #endif
 562
 563     while( !menu_quit )
 564     {
 565         switch( rb->do_menu( &menu, &selection, NULL, false ) )
 566         {
 567             case 0:
 568                 result = MINESWEEPER_WIN; /* start playing */
 569                 menu_quit = true;
 570                 break;
 571
 572             case 1:
 573                 rb->set_int( "Mine Percentage", "%", UNIT_INT, &p, NULL,
 574                              1, 2, 98, NULL );
 575                 break;
 576
 577             case 2:
 578                 rb->set_int( "Number of Rows", "", UNIT_INT, &height, NULL,
 579                              1, 1, MAX_HEIGHT, NULL );
 580                 break;
 581
 582             case 3:
 583                 rb->set_int( "Number of Columns", "", UNIT_INT, &width, NULL,
 584                              1, 1, MAX_WIDTH, NULL );
 585                 break;
 586
 587             case 4:
 588                 playback_control( NULL );
 589                 break;
 590
 591             default:
 592                 result = MINESWEEPER_QUIT; /* quit program */
 593                 menu_quit = true;
 594                 break;
 595         }
 596     }
 597
 598     return result;
 599 }
 600
 601 /* the big and ugly game function */
 602 enum minesweeper_status minesweeper( void )
 603 {
 604     int i, j;
 605     int button;
 606     int lastbutton = BUTTON_NONE;
 607
 608     /* the cursor coordinates */
 609     int x=0, y=0;
 610
 611     /**
 612      * Show the menu
 613      */
 614     if( ( i = menu() ) != MINESWEEPER_WIN ) return i;
 615
 616     /**
 617      * Init game
 618      */
 619     top = (LCD_HEIGHT-height*TileSize)/2;
 620     left = (LCD_WIDTH-width*TileSize)/2;
 621
 622 #ifdef HAVE_TOUCHSCREEN
 623     mine_raster.tl_x = left;
 624     mine_raster.tl_y = top;
 625     mine_raster.width = width*TileSize;
 626     mine_raster.height = height*TileSize;
 627 #endif
 628
 629     rb->srand( *rb->current_tick );
 630     minesweeper_init();
 631     x = 0;
 632     y = 0;
 633
 634     /**
 635      * Play
 636      */
 637     while( true )
 638     {
 639
 640         /* clear the screen buffer */
 641 #ifdef HAVE_LCD_COLOR
 642         rb->lcd_set_background( BackgroundColor );
 643 #endif
 644         rb->lcd_clear_display();
 645
 646         /* display the mine field */
 647         for( i = 0; i < height; i++ )
 648         {
 649             for( j = 0; j < width; j++ )
 650             {
 651                 if( minefield[i][j].known )
 652                 {
 653                     draw_tile( minefield[i][j].neighbors, j, i );
 654                 }
 655                 else if(minefield[i][j].flag)
 656                 {
 657                     draw_tile( Flag, j, i );
 658                 }
 659                 else
 660                 {
 661                     draw_tile( Unknown, j, i );
 662                 }
 663             }
 664         }
 665
 666         /* display the cursor */
 667         invert_tile( x, y );
 668
 669         /* update the screen */
 670         rb->lcd_update();
 671
 672         button = rb->button_get(true);
 673 #ifdef HAVE_TOUCHSCREEN
 674         if(button & BUTTON_TOUCHSCREEN)
 675         {
 676             struct ts_raster_result res;
 677             if(touchscreen_map_raster(&mine_raster, rb->button_get_data() >> 16, rb->button_get_data() & 0xffff, &res) == 1)
 678             {
 679                 button &= ~BUTTON_TOUCHSCREEN;
 680                 lastbutton &= ~BUTTON_TOUCHSCREEN;
 681
 682                 if(button & BUTTON_REPEAT && lastbutton != MINESWP_TOGGLE && lastbutton ^ BUTTON_REPEAT)
 683                     button = MINESWP_TOGGLE;
 684                 else if(button == BUTTON_REL && lastbutton ^ BUTTON_REPEAT)
 685                     button = MINESWP_DISCOVER;
 686                 else
 687                     button |= BUTTON_TOUCHSCREEN;
 688
 689                 x = res.x;
 690                 y = res.y;
 691             }
 692         }
 693 #endif
 694         switch(button)
 695         {
 696             /* quit minesweeper (you really shouldn't use this button ...) */
 697 #ifdef MINESWP_RC_QUIT
 698             case MINESWP_RC_QUIT:
 699 #endif
 700             case MINESWP_QUIT:
 701                 return MINESWEEPER_QUIT;
 702
 703             /* move cursor left */
 704             case MINESWP_LEFT:
 705             case MINESWP_LEFT|BUTTON_REPEAT:
 706                 x = ( x + width - 1 )%width;
 707                 break;
 708
 709             /* move cursor right */
 710             case MINESWP_RIGHT:
 711             case MINESWP_RIGHT|BUTTON_REPEAT:
 712                 x = ( x + 1 )%width;
 713                 break;
 714
 715             /* move cursor down */
 716             case MINESWP_DOWN:
 717             case MINESWP_DOWN|BUTTON_REPEAT:
 718                 y = ( y + 1 )%height;
 719                 break;
 720
 721             /* move cursor up */
 722             case MINESWP_UP:
 723             case MINESWP_UP|BUTTON_REPEAT:
 724                 y = ( y + height - 1 )%height;
 725                 break;
 726
 727             /*move cursor though the entire field*/
 728 #ifdef MINESWP_SCROLLWHEEL
 729             case MINESWP_NEXT:
 730             case MINESWP_NEXT|BUTTON_REPEAT:
 731                 if (x == width -1 ) {
 732                     y = ( y + 1 )%height;
 733                 }
 734                 x = ( x + 1 )%width;
 735                 break;
 736
 737             case MINESWP_PREV:
 738             case MINESWP_PREV|BUTTON_REPEAT:
 739                 if (x == 0) {
 740                     y = ( y + height - 1 )%height;
 741                 }
 742                 x = ( x + width - 1 )%width;
 743                 break;
 744 #endif
 745             /* discover a tile (and it's neighbors if .neighbors == 0) */
 746             case MINESWP_DISCOVER:
 747 #ifdef MINESWP_DISCOVER2
 748             case MINESWP_DISCOVER2:
 749 #endif
 750                 if( minefield[y][x].flag ) break;
 751                 /* we put the mines on the first "click" so that you don't
 752                  * lose on the first "click" */
 753                 if( tiles_left == width*height && no_mines )
 754                     minesweeper_putmines(p,x,y);
 755
 756                 discover(y, x);
 757
 758                 if( minefield[y][x].mine )
 759                 {
 760                     minefield[y][x].known = 1;
 761                     return MINESWEEPER_LOSE;
 762                 }
 763                 tiles_left = count_tiles_left();
 764                 if( tiles_left == mine_num )
 765                 {
 766                     return MINESWEEPER_WIN;
 767                 }
 768                 break;
 769
 770             /* toggle flag under cursor */
 771             case MINESWP_TOGGLE:
 772 #ifdef MINESWP_TOGGLE_PRE
 773                 if( lastbutton != MINESWP_TOGGLE_PRE )
 774                     break;
 775 #endif
 776 #ifdef MINESWP_TOGGLE2
 777             case MINESWP_TOGGLE2:
 778 #endif
 779                 minefield[y][x].flag = ( minefield[y][x].flag + 1 )%2;
 780                 break;
 781
 782             /* show how many mines you think you have found and how many
 783              * there really are on the game */
 784             case MINESWP_INFO:
 785                 if( no_mines )
 786                     break;
 787                 flags_used = count_flags();
 788                 if (flags_used == 1) {
 789                     rb->splashf( HZ*2, "You marked 1 field. There are %d mines.",
 790                                 mine_num );
 791                 }
 792                 else
 793                 {
 794                     rb->splashf( HZ*2, "You marked %d fields. There are %d mines.",
 795                                 flags_used, mine_num );
 796                 }
 797                 break;
 798
 799             default:
 800                 if( rb->default_event_handler( button ) == SYS_USB_CONNECTED )
 801                     return MINESWEEPER_USB;
 802                 break;
 803         }
 804         if( button != BUTTON_NONE )
 805             lastbutton = button;
 806     }
 807
 808 }
 809
 810 /* plugin entry point */
 811 enum plugin_status plugin_start(const void* parameter)
 812 {
 813     bool exit = false;
 814
 815     (void)parameter;
 816 #if LCD_DEPTH > 1
 817     rb->lcd_set_backdrop(NULL);
 818 #endif
 819
 820     while( !exit )
 821     {
 822         switch( minesweeper() )
 823         {
 824             case MINESWEEPER_WIN:
 825                 rb->splash( HZ, "You Win!" );
 826                 rb->lcd_clear_display();
 827                 mine_show();
 828                 break;
 829
 830             case MINESWEEPER_LOSE:
 831                 rb->splash( HZ, "You Lose!" );
 832                 rb->lcd_clear_display();
 833                 mine_show();
 834                 break;
 835
 836             case MINESWEEPER_USB:
 837                 return PLUGIN_USB_CONNECTED;
 838
 839             case MINESWEEPER_QUIT:
 840                 exit = true;
 841                 break;
 842
 843             default:
 844                 break;
 845         }
 846     }
 847
 848     return PLUGIN_OK;
 849 }
 850
 851 #endif