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 #elif CONFIG_KEYPAD == MPIO_HD200_PAD
 263 #   define MINESWP_LEFT     BUTTON_VOL_DOWN
 264 #   define MINESWP_RIGHT    BUTTON_VOL_UP
 265 #   define MINESWP_UP       BUTTON_PREV
 266 #   define MINESWP_DOWN     BUTTON_NEXT
 267 #   define MINESWP_QUIT     (BUTTON_REC|BUTTON_PLAY)
 268 #   define MINESWP_TOGGLE   BUTTON_PLAY
 269 #   define MINESWP_DISCOVER BUTTON_SELECT
 270 #   define MINESWP_INFO     BUTTON_REC
 271
 272 #else
 273 #error No keymap defined!
 274 #endif
 275
 276 #ifdef HAVE_TOUCHSCREEN
 277 #ifndef MINESWP_QUIT
 278 #   define MINESWP_QUIT     BUTTON_TOPLEFT
 279 #endif
 280 #ifndef MINESWP_LEFT
 281 #   define MINESWP_LEFT     BUTTON_MIDLEFT
 282 #endif
 283 #ifndef MINESWP_RIGHT
 284 #   define MINESWP_RIGHT    BUTTON_MIDRIGHT
 285 #endif
 286 #ifndef MINESWP_UP
 287 #   define MINESWP_UP       BUTTON_TOPMIDDLE
 288 #endif
 289 #ifndef MINESWP_DOWN
 290 #   define MINESWP_DOWN     BUTTON_BOTTOMMIDDLE
 291 #endif
 292 #ifndef MINESWP_TOGGLE
 293 #   define MINESWP_TOGGLE   BUTTON_CENTER
 294 #endif
 295 #ifndef MINESWP_DISCOVER
 296 #   define MINESWP_DISCOVER BUTTON_BOTTOMLEFT
 297 #endif
 298 #ifndef MINESWP_INFO
 299 #   define MINESWP_INFO     BUTTON_BOTTOMRIGHT
 300 #endif
 301 #endif
 302
 303 extern const fb_data minesweeper_tiles[];
 304
 305 #ifdef HAVE_LCD_COLOR
 306 #   if ( LCD_HEIGHT * LCD_WIDTH ) / ( 16 * 16 ) >= 130
 307         /* We want to have at least 130 tiles on the screen */
 308 #       define TileSize 16
 309 #   elif ( LCD_HEIGHT * LCD_WIDTH ) / ( 12 * 12 ) >= 130
 310 #       define TileSize 12
 311 #   else
 312 #       define TileSize 10
 313 #   endif
 314 #   define BackgroundColor LCD_RGBPACK( 128, 128, 128 )
 315 #elif LCD_DEPTH > 1
 316 #   define TileSize 12
 317 #else
 318 #   define TileSize 8
 319 #endif
 320
 321 #define Mine         9
 322 #define Flag         10
 323 #define Unknown      11
 324 #define ExplodedMine 12
 325 #define WrongFlag    13
 326 #define CorrectFlag  14
 327
 328 #define draw_tile( num, x, y ) \
 329     rb->lcd_bitmap_part( minesweeper_tiles, 0, num * TileSize, \
 330                          TileSize, left+x*TileSize, top+y*TileSize, \
 331                          TileSize, TileSize )
 332
 333 #define invert_tile( x, y ) \
 334     rb->lcd_set_drawmode(DRMODE_COMPLEMENT); \
 335     rb->lcd_fillrect( left+x*TileSize, top+y*TileSize, TileSize, TileSize ); \
 336     rb->lcd_set_drawmode(DRMODE_SOLID);
 337
 338
 339 /* the tile struct
 340  * if there is a mine, mine is true
 341  * if tile is known by player, known is true
 342  * if tile has a flag, flag is true
 343  * neighbors is the total number of mines arround tile
 344  */
 345 typedef struct tile
 346 {
 347     unsigned char mine : 1;
 348     unsigned char known : 1;
 349     unsigned char flag : 1;
 350     unsigned char neighbors : 4;
 351 } tile;
 352
 353 /* the height and width of the field */
 354 #define MAX_HEIGHT (LCD_HEIGHT/TileSize)
 355 #define MAX_WIDTH  (LCD_WIDTH/TileSize)
 356 int height = MAX_HEIGHT;
 357 int width = MAX_WIDTH;
 358 int top;
 359 int left;
 360
 361 /* The Minefield. Caution it is defined as Y, X! Not the opposite. */
 362 tile minefield[MAX_HEIGHT][MAX_WIDTH];
 363
 364 /* total number of mines on the game */
 365 int mine_num = 0;
 366
 367 /* percentage of mines on minefield used during generation */
 368 int p = 16;
 369
 370 /* number of tiles left on the game */
 371 int tiles_left;
 372
 373 /* number of used flags on the game */
 374 int flags_used;
 375
 376 /* Because mines are set after the first move... */
 377 bool no_mines = true;
 378
 379 /* We need a stack (created on discover()) for the cascade algorithm. */
 380 int stack_pos = 0;
 381
 382 /* a usefull string for snprintf */
 383 char str[30];
 384
 385 #ifdef HAVE_TOUCHSCREEN
 386
 387 #include "lib/pluginlib_touchscreen.h"
 388 static struct ts_raster mine_raster = { 0, 0, MAX_WIDTH, MAX_HEIGHT, TileSize, TileSize };
 389 #endif
 390
 391
 392 void push( int *stack, int y, int x )
 393 {
 394     if( stack_pos <= height*width )
 395     {
 396         stack[++stack_pos] = y;
 397         stack[++stack_pos] = x;
 398     }
 399 }
 400
 401 /* Unveil tiles and push them to stack if they are empty. */
 402 void unveil( int *stack, int y, int x )
 403 {
 404     if( x < 0 || y < 0 || x > width - 1 || y > height - 1
 405        || minefield[y][x].known
 406        || minefield[y][x].mine || minefield[y][x].flag ) return;
 407
 408     minefield[y][x].known = 1;
 409
 410     if( minefield[y][x].neighbors == 0 )
 411         push( stack, y, x );
 412 }
 413
 414 int is_flagged( int y, int x )
 415 {
 416     if( x >= 0 && y >= 0 && x < width && y < height && minefield[y][x].flag )
 417         return 1;
 418     return 0;
 419 }
 420
 421 int neighbors_flagged( int y, int x )
 422 {
 423     return is_flagged( y-1, x-1 ) +
 424            is_flagged( y-1, x ) +
 425            is_flagged( y-1, x+1 ) +
 426            is_flagged( y, x-1 ) +
 427            is_flagged( y, x ) +
 428            is_flagged( y, x+1 ) +
 429            is_flagged( y+1, x-1 ) +
 430            is_flagged( y+1, x ) +
 431            is_flagged( y+1, x+1 );
 432 }
 433
 434 bool discover( int y, int x, bool explore_neighbors )
 435 {
 436     /* Selected tile. */
 437     if( x < 0 || y < 0 || x > width - 1 || y > height - 1
 438        || minefield[y][x].known
 439        || minefield[y][x].mine || minefield[y][x].flag )
 440     {
 441         if( !minefield[y][x].flag && minefield[y][x].mine )
 442             return true;
 443
 444         if( explore_neighbors && minefield[y][x].known &&
 445             minefield[y][x].neighbors == neighbors_flagged( y, x ) )
 446         {
 447             return discover( y-1, x-1, false ) ||
 448                    discover( y-1, x, false ) ||
 449                    discover( y-1, x+1, false ) ||
 450                    discover( y, x-1, false ) ||
 451                    discover( y, x, false ) ||
 452                    discover( y, x+1, false ) ||
 453                    discover( y+1, x-1, false ) ||
 454                    discover( y+1, x, false ) ||
 455                    discover( y+1, x+1, false );
 456         }
 457
 458         return false;
 459     }
 460
 461     minefield[y][x].known = 1;
 462     /* Exit if the tile is not empty. (no mines nearby) */
 463     if( minefield[y][x].neighbors ) return false;
 464
 465     int stack[height*width];
 466
 467     push( stack, y, x );
 468
 469     /* Scan all nearby tiles. If we meet a tile with a number we just unveil
 470      * it. If we meet an empty tile, we push the location in stack. For each
 471      * location in stack we do the same thing. (scan again all nearby tiles)
 472      */
 473     while( stack_pos )
 474     {
 475         /* Pop x, y from stack. */
 476         x = stack[stack_pos--];
 477         y = stack[stack_pos--];
 478
 479         unveil( stack, y-1, x-1 );
 480         unveil( stack, y-1, x   );
 481         unveil( stack, y-1, x+1 );
 482         unveil( stack, y,   x+1 );
 483         unveil( stack, y+1, x+1 );
 484         unveil( stack, y+1, x   );
 485         unveil( stack, y+1, x-1 );
 486         unveil( stack, y,   x-1 );
 487     }
 488
 489     return false;
 490 }
 491
 492 /* Reset the whole board for a new game. */
 493 void minesweeper_init( void )
 494 {
 495     int i,j;
 496
 497     for( i = 0; i < MAX_HEIGHT; i++ )
 498     {
 499         for( j = 0; j < MAX_WIDTH; j++ )
 500         {
 501             minefield[i][j].known = 0;
 502             minefield[i][j].flag = 0;
 503             minefield[i][j].mine = 0;
 504             minefield[i][j].neighbors = 0;
 505         }
 506     }
 507     no_mines = true;
 508     tiles_left = width*height;
 509 }
 510
 511
 512 /* put mines on the mine field */
 513 /* there is p% chance that a tile is a mine */
 514 /* if the tile has coordinates (x,y), then it can't be a mine */
 515 void minesweeper_putmines( int p, int x, int y )
 516 {
 517     int i,j;
 518
 519     mine_num = 0;
 520     for( i = 0; i < height; i++ )
 521     {
 522         for( j = 0; j < width; j++ )
 523         {
 524             if( rb->rand()%100 < p && !( y==i && x==j ) )
 525             {
 526                 minefield[i][j].mine = 1;
 527                 mine_num++;
 528             }
 529             else
 530             {
 531                 minefield[i][j].mine = 0;
 532             }
 533             minefield[i][j].neighbors = 0;
 534         }
 535     }
 536
 537     /* we need to compute the neighbor element for each tile */
 538     for( i = 0; i < height; i++ )
 539     {
 540         for( j = 0; j < width; j++ )
 541         {
 542             if( i > 0 )
 543             {
 544                 if( j > 0 )
 545                     minefield[i][j].neighbors += minefield[i-1][j-1].mine;
 546                 minefield[i][j].neighbors += minefield[i-1][j].mine;
 547                 if( j < width - 1 )
 548                     minefield[i][j].neighbors += minefield[i-1][j+1].mine;
 549             }
 550             if( j > 0 )
 551                 minefield[i][j].neighbors += minefield[i][j-1].mine;
 552             if( j < width - 1 )
 553                 minefield[i][j].neighbors += minefield[i][j+1].mine;
 554             if( i < height - 1 )
 555             {
 556                 if( j > 0 )
 557                     minefield[i][j].neighbors += minefield[i+1][j-1].mine;
 558                 minefield[i][j].neighbors += minefield[i+1][j].mine;
 559                 if( j < width - 1 )
 560                     minefield[i][j].neighbors += minefield[i+1][j+1].mine;
 561             }
 562         }
 563     }
 564
 565     no_mines = false;
 566
 567     /* In case the user is lucky and there are no mines positioned. */
 568     if( !mine_num && height*width != 1 )
 569     {
 570         minesweeper_putmines(p, x, y);
 571     }
 572 }
 573
 574 /* A function that will uncover all the board, when the user wins or loses.
 575    can easily be expanded, (just a call assigned to a button) as a solver. */
 576 void mine_show( void )
 577 {
 578     int i, j, button;
 579
 580     for( i = 0; i < height; i++ )
 581     {
 582         for( j = 0; j < width; j++ )
 583         {
 584             if( minefield[i][j].mine )
 585             {
 586                 if( minefield[i][j].known )
 587                     draw_tile( ExplodedMine, j, i );
 588                 else if( minefield[i][j].flag )
 589                     draw_tile( CorrectFlag, j, i );
 590                 else
 591                     draw_tile( Mine, j, i );
 592             }
 593             else
 594             {
 595                 if( minefield[i][j].flag )
 596                     draw_tile( WrongFlag, j, i );
 597                 else
 598                     draw_tile( minefield[i][j].neighbors, j, i );
 599             }
 600         }
 601     }
 602     rb->lcd_update();
 603
 604     do
 605         button = rb->button_get(true);
 606     while( ( button == BUTTON_NONE )
 607            || ( button & (BUTTON_REL|BUTTON_REPEAT) ) );
 608 #ifdef HAVE_TOUCHSCREEN
 609     button = BUTTON_NONE;
 610 #endif
 611 }
 612
 613 int count_tiles_left( void )
 614 {
 615     int tiles_left = 0;
 616     int i, j;
 617     for( i = 0; i < height; i++ )
 618         for( j = 0; j < width; j++ )
 619              if( minefield[i][j].known == 0 )
 620                 tiles_left++;
 621     return tiles_left;
 622 }
 623
 624 int count_flags( void )
 625 {
 626     int flags_used = 0;
 627     int i, j;
 628     for( i = 0; i < height; i++ )
 629         for( j = 0; j < width; j++ )
 630              if( minefield[i][j].flag == 1 )
 631                 flags_used++;
 632     return flags_used;
 633 }
 634
 635 /* welcome screen where player can chose mine percentage */
 636 enum minesweeper_status menu( void )
 637 {
 638     int selection = 0, result = MINESWEEPER_QUIT;
 639     bool menu_quit = false;
 640
 641     MENUITEM_STRINGLIST( menu, "Minesweeper Menu", NULL, "Play Minesweeper",
 642                          "Mine Percentage", "Number of Rows",
 643                          "Number of Columns", "Playback Control", "Quit" );
 644
 645 #ifdef HAVE_LCD_COLOR
 646     rb->lcd_set_foreground( rb->global_settings->fg_color );
 647     rb->lcd_set_background( rb->global_settings->bg_color );
 648 #endif
 649
 650     while( !menu_quit )
 651     {
 652         switch( rb->do_menu( &menu, &selection, NULL, false ) )
 653         {
 654             case 0:
 655                 result = MINESWEEPER_WIN; /* start playing */
 656                 menu_quit = true;
 657                 break;
 658
 659             case 1:
 660                 rb->set_int( "Mine Percentage", "%", UNIT_INT, &p, NULL,
 661                              1, 2, 98, NULL );
 662                 break;
 663
 664             case 2:
 665                 rb->set_int( "Number of Rows", "", UNIT_INT, &height, NULL,
 666                              1, 1, MAX_HEIGHT, NULL );
 667                 break;
 668
 669             case 3:
 670                 rb->set_int( "Number of Columns", "", UNIT_INT, &width, NULL,
 671                              1, 1, MAX_WIDTH, NULL );
 672                 break;
 673
 674             case 4:
 675                 playback_control( NULL );
 676                 break;
 677
 678             default:
 679                 result = MINESWEEPER_QUIT; /* quit program */
 680                 menu_quit = true;
 681                 break;
 682         }
 683     }
 684
 685     return result;
 686 }
 687
 688 /* the big and ugly game function */
 689 enum minesweeper_status minesweeper( void )
 690 {
 691     int i, j;
 692     int button;
 693     int lastbutton = BUTTON_NONE;
 694
 695     /* the cursor coordinates */
 696     int x=0, y=0;
 697
 698     /**
 699      * Show the menu
 700      */
 701     if( ( i = menu() ) != MINESWEEPER_WIN ) return i;
 702
 703     /**
 704      * Init game
 705      */
 706     top = (LCD_HEIGHT-height*TileSize)/2;
 707     left = (LCD_WIDTH-width*TileSize)/2;
 708
 709 #ifdef HAVE_TOUCHSCREEN
 710     mine_raster.tl_x = left;
 711     mine_raster.tl_y = top;
 712     mine_raster.width = width*TileSize;
 713     mine_raster.height = height*TileSize;
 714 #endif
 715
 716     rb->srand( *rb->current_tick );
 717     minesweeper_init();
 718     x = 0;
 719     y = 0;
 720
 721     /**
 722      * Play
 723      */
 724     while( true )
 725     {
 726
 727         /* clear the screen buffer */
 728 #ifdef HAVE_LCD_COLOR
 729         rb->lcd_set_background( BackgroundColor );
 730 #endif
 731         rb->lcd_clear_display();
 732
 733         /* display the mine field */
 734         for( i = 0; i < height; i++ )
 735         {
 736             for( j = 0; j < width; j++ )
 737             {
 738                 if( minefield[i][j].known )
 739                 {
 740                     draw_tile( minefield[i][j].neighbors, j, i );
 741                 }
 742                 else if(minefield[i][j].flag)
 743                 {
 744                     draw_tile( Flag, j, i );
 745                 }
 746                 else
 747                 {
 748                     draw_tile( Unknown, j, i );
 749                 }
 750             }
 751         }
 752
 753         /* display the cursor */
 754         invert_tile( x, y );
 755
 756         /* update the screen */
 757         rb->lcd_update();
 758
 759         button = rb->button_get(true);
 760 #ifdef HAVE_TOUCHSCREEN
 761         if(button & BUTTON_TOUCHSCREEN)
 762         {
 763             struct ts_raster_result res;
 764             if(touchscreen_map_raster(&mine_raster, rb->button_get_data() >> 16, rb->button_get_data() & 0xffff, &res) == 1)
 765             {
 766                 button &= ~BUTTON_TOUCHSCREEN;
 767                 lastbutton &= ~BUTTON_TOUCHSCREEN;
 768
 769                 if(button & BUTTON_REPEAT && lastbutton != MINESWP_TOGGLE && lastbutton ^ BUTTON_REPEAT)
 770                     button = MINESWP_TOGGLE;
 771                 else if(button == BUTTON_REL && lastbutton ^ BUTTON_REPEAT)
 772                     button = MINESWP_DISCOVER;
 773                 else
 774                     button |= BUTTON_TOUCHSCREEN;
 775
 776                 x = res.x;
 777                 y = res.y;
 778             }
 779         }
 780 #endif
 781         switch(button)
 782         {
 783             /* quit minesweeper (you really shouldn't use this button ...) */
 784 #ifdef MINESWP_RC_QUIT
 785             case MINESWP_RC_QUIT:
 786 #endif
 787             case MINESWP_QUIT:
 788                 return MINESWEEPER_QUIT;
 789
 790             /* move cursor left */
 791             case MINESWP_LEFT:
 792             case MINESWP_LEFT|BUTTON_REPEAT:
 793                 x = ( x + width - 1 )%width;
 794                 break;
 795
 796             /* move cursor right */
 797             case MINESWP_RIGHT:
 798             case MINESWP_RIGHT|BUTTON_REPEAT:
 799                 x = ( x + 1 )%width;
 800                 break;
 801
 802             /* move cursor down */
 803             case MINESWP_DOWN:
 804             case MINESWP_DOWN|BUTTON_REPEAT:
 805                 y = ( y + 1 )%height;
 806                 break;
 807
 808             /* move cursor up */
 809             case MINESWP_UP:
 810             case MINESWP_UP|BUTTON_REPEAT:
 811                 y = ( y + height - 1 )%height;
 812                 break;
 813
 814             /*move cursor though the entire field*/
 815 #ifdef MINESWP_SCROLLWHEEL
 816             case MINESWP_NEXT:
 817             case MINESWP_NEXT|BUTTON_REPEAT:
 818                 if (x == width -1 ) {
 819                     y = ( y + 1 )%height;
 820                 }
 821                 x = ( x + 1 )%width;
 822                 break;
 823
 824             case MINESWP_PREV:
 825             case MINESWP_PREV|BUTTON_REPEAT:
 826                 if (x == 0) {
 827                     y = ( y + height - 1 )%height;
 828                 }
 829                 x = ( x + width - 1 )%width;
 830                 break;
 831 #endif
 832             /* discover a tile (and it's neighbors if .neighbors == 0) */
 833             case MINESWP_DISCOVER:
 834 #ifdef MINESWP_DISCOVER2
 835             case MINESWP_DISCOVER2:
 836 #endif
 837                 if( minefield[y][x].flag ) break;
 838                 /* we put the mines on the first "click" so that you don't
 839                  * lose on the first "click" */
 840                 if( tiles_left == width*height && no_mines )
 841                     minesweeper_putmines(p,x,y);
 842
 843                 if( discover( y, x, true ) )
 844                 {
 845                     minefield[y][x].known = 1;
 846                     return MINESWEEPER_LOSE;
 847                 }
 848
 849                 tiles_left = count_tiles_left();
 850                 if( tiles_left == mine_num )
 851                 {
 852                     return MINESWEEPER_WIN;
 853                 }
 854                 break;
 855
 856             /* toggle flag under cursor */
 857             case MINESWP_TOGGLE:
 858 #ifdef MINESWP_TOGGLE_PRE
 859                 if( lastbutton != MINESWP_TOGGLE_PRE )
 860                     break;
 861 #endif
 862 #ifdef MINESWP_TOGGLE2
 863             case MINESWP_TOGGLE2:
 864 #endif
 865                 minefield[y][x].flag = ( minefield[y][x].flag + 1 )%2;
 866                 break;
 867
 868             /* show how many mines you think you have found and how many
 869              * there really are on the game */
 870             case MINESWP_INFO:
 871                 if( no_mines )
 872                     break;
 873                 flags_used = count_flags();
 874                 if (flags_used == 1) {
 875                     rb->splashf( HZ*2, "You marked 1 field. There are %d mines.",
 876                                 mine_num );
 877                 }
 878                 else
 879                 {
 880                     rb->splashf( HZ*2, "You marked %d fields. There are %d mines.",
 881                                 flags_used, mine_num );
 882                 }
 883                 break;
 884
 885             default:
 886                 if( rb->default_event_handler( button ) == SYS_USB_CONNECTED )
 887                     return MINESWEEPER_USB;
 888                 break;
 889         }
 890         if( button != BUTTON_NONE )
 891             lastbutton = button;
 892     }
 893
 894 }
 895
 896 /* plugin entry point */
 897 enum plugin_status plugin_start(const void* parameter)
 898 {
 899     bool exit = false;
 900
 901     (void)parameter;
 902 #if LCD_DEPTH > 1
 903     rb->lcd_set_backdrop(NULL);
 904 #endif
 905
 906     while( !exit )
 907     {
 908         switch( minesweeper() )
 909         {
 910             case MINESWEEPER_WIN:
 911                 rb->splash( HZ, "You Win!" );
 912                 rb->lcd_clear_display();
 913                 mine_show();
 914                 break;
 915
 916             case MINESWEEPER_LOSE:
 917                 rb->splash( HZ, "You Lose!" );
 918                 rb->lcd_clear_display();
 919                 mine_show();
 920                 break;
 921
 922             case MINESWEEPER_USB:
 923                 return PLUGIN_USB_CONNECTED;
 924
 925             case MINESWEEPER_QUIT:
 926                 exit = true;
 927                 break;
 928
 929             default:
 930                 break;
 931         }
 932     }
 933
 934     return PLUGIN_OK;
 935 }
 936
 937 #endif