plomlompom.com Git - plomrogue/blob - src/main.c

   1 /* main.c */
   2
   3 #include "main.h"
   4 #include <stdlib.h> /* for atoi(), exit(), EXIT_FAILURE, calloc() */
   5 #include <stdio.h> /* for FILE typedef, F_OK, rename() */
   6 #include <ncurses.h> /* for initscr(), noecho(), curs_set(), keypad(), raw() */
   7 #include <time.h> /* for time() */
   8 #include <unistd.h> /* for unlink(), getopt(), optarg */
   9 #include <stdint.h> /* for uint8_t */
  10 #include <errno.h> /* for errno */
  11 #include "windows.h" /* for structs WinMeta, Win, init_win(), init_win_meta(),
  12                       * draw_all_wins()
  13                       */
  14 #include "draw_wins.h" /* for draw_keys_win(), draw_map_win(), draw_info_win(),
  15                         * draw_log_win()
  16                         */
  17 #include "keybindings.h" /* for initkeybindings(), get_action_key() */
  18 #include "readwrite.h" /* for [read/write]_uint[8/16/32][_bigendian]() */
  19 #include "map_objects.h" /* for structs Monster, Item, Player,
  20                           * init_map_object_defs(), read_map_objects(),
  21                           * build_map_objects()
  22                           */
  23 #include "map_object_actions.h" /* for player_wait(), move_player() */
  24 #include "map.h" /* for struct Map, init_map() */
  25 #include "misc.h" /* for update_log(), toggle_window(), find_passable_pos(),
  26                    * meta_keys(), save_game()
  27                    */
  28 #include "yx_uint16.h" /* for dir enum */
  29 #include "rrand.h" /* for rrand(), rrand_seed() */
  30 #include "rexit.h" /* for exit_game() */
  31 #include "control.h" /* for meta_keys() */
  32
  33
  34 int main(int argc, char *argv[])
  35 {
  36     struct World world;
  37     char * recordfile = "record";
  38     char * savefile = "savefile";
  39     char * err_x = "A file 'record' exists, but no 'savefile'. If everything "
  40                    "was in order, both or none would exist. I won't start "
  41                    "until this is corrected.";
  42     if (!access(recordfile, F_OK) && access(savefile, F_OK))
  43     {
  44         errno = 0;
  45         exit_err(1, &world, err_x);
  46     }
  47     err_x        = "A 'savefile' exists, but no file 'record'. If everything "
  48                    "was in order, both or none would exist. I won't start "
  49                    "until this is corrected.";
  50
  51     if (!access(savefile, F_OK) && access(recordfile, F_OK))
  52     {
  53         errno = 0;
  54         exit_err(1, &world, err_x);
  55     }
  56     char * recordfile_tmp = "record_tmp";
  57     char * savefile_tmp   = "savefile_tmp";
  58     err_x        = "A file 'recordfile_tmp' exists, probably from a corrupted "
  59                    "previous record saving process. To avoid game record "
  60                    "corruption, I won't start until it is removed or renamed.";
  61     exit_err(!access(recordfile_tmp, F_OK), &world, err_x);
  62     err_x        = "A file 'savefile_tmp' exists, probably from a corrupted "
  63                    "previous game saving process. To avoid savegame "
  64                    "corruption, I won't start until it is removed or renamed.";
  65     exit_err(!access(savefile_tmp,   F_OK), &world, err_x);
  66
  67     /* Read in startup options (i.e. replay option and replay start turn). */
  68     int opt;
  69     uint32_t start_turn;
  70     world.interactive = 1;
  71     while ((opt = getopt(argc, argv, "s::")) != -1)
  72     {
  73         switch (opt)
  74         {
  75             case 's':
  76                 world.interactive = 0;
  77                 start_turn = 0;
  78                 if (optarg)
  79                     start_turn = atoi(optarg);
  80                  break;
  81             default:
  82                 exit(EXIT_FAILURE);
  83         }
  84     }
  85
  86     /* Initialize log, player, monster/item definitions and monsters/items. */
  87     world.log = calloc(1, sizeof(char));
  88     set_cleanup_flag(CLEANUP_LOG);
  89     update_log (&world, " ");
  90     struct Player player;
  91     player.hitpoints = 5;
  92     world.player = &player;
  93     world.monster = 0;
  94     world.item = 0;
  95     init_map_object_defs(&world, "defs");
  96
  97     /* For interactive mode, try to load world state from savefile. */
  98     char * err_o = "Trouble loading game (fopen() in main()) / "
  99                    "opening 'savefile' for reading.";
 100     char * err_r = "Trouble loading game (in main()) / "
 101                    "reading from opened 'savefile'.";
 102     char * err_c = "Trouble loading game (fclose() in main()) / "
 103                    "closing opened 'savefile'.";
 104     FILE * file;
 105     if (1 == world.interactive && 0 == access(savefile, F_OK))
 106     {
 107         file = fopen(savefile, "r");
 108         exit_err(0 == file, &world, err_o);
 109         if (   read_uint32_bigendian(file, &world.seed)
 110             || read_uint32_bigendian(file, &world.turn)
 111             || read_uint16_bigendian(file, &world.score)
 112             || read_uint16_bigendian(file, &player.pos.y)
 113             || read_uint16_bigendian(file, &player.pos.x)
 114             || read_uint8(file, &player.hitpoints)
 115             || read_map_objects(&world, &world.monster, file)
 116             || read_map_objects(&world, &world.item,    file))
 117         {
 118             exit_err(1, &world, err_r);
 119         }
 120         exit_err(fclose(file), &world, err_c);
 121         player.pos.y--;
 122         player.pos.x--;
 123     }
 124
 125     /* For non-interactive mode, try to load world state from record file. */
 126     else
 127     {
 128         err_o = "Trouble loading record file (fopen() in main()) / "
 129                 "opening file 'record' for reading.";
 130         err_r = "Trouble loading record file (read_uint32_bigendian() in "
 131                 "main()) / reading from opened file 'record'.";
 132         world.turn = 1;
 133         if (0 == world.interactive)
 134         {
 135             file = fopen(recordfile, "r");
 136             exit_err(NULL == file, &world, err_o);
 137             exit_err(read_uint32_bigendian(file, &world.seed), &world, err_r);
 138         }
 139
 140         /* For interactive-mode in newly started world, generate a start seed
 141          * from the current time.
 142          */
 143         else
 144         {
 145             world.seed = time(NULL);
 146             world.score = 0;
 147
 148             err_o        = "Trouble recording new seed (fopen() in main()) / "
 149                            "opening 'record_tmp' file for writing.";
 150             char * err_w = "Trouble recording new seed "
 151                            "(write_uint32_bigendian() in main()) / writing to "
 152                            "opened file 'record_tmp'.";
 153             err_c        = "Trouble recording new seed (fclose() in main()) / "
 154                            "closing opened file 'record_tmp'.";
 155             char * err_m = "Trouble recording new seed (rename() in main()) : "
 156                            "renaming file 'record_tmp' to 'record'.";
 157             file = fopen(recordfile_tmp, "w");
 158             exit_err(0 == file, &world, err_o);
 159             exit_err(write_uint32_bigendian(world.seed, file), &world, err_w);
 160             exit_err(fclose(file), &world, err_c);
 161             exit_err(rename(recordfile_tmp, recordfile), &world, err_m);
 162         }
 163     }
 164
 165
 166     /* Generate map from seed and, if newly generated world, start positions of
 167      * actors.
 168      */
 169     rrand_seed(world.seed);
 170     struct Map map = init_map();
 171     world.map = &map;
 172     set_cleanup_flag(CLEANUP_MAP);
 173     if (1 == world.turn)
 174     {
 175         player.pos = find_passable_pos(world.map);
 176         void * foo;
 177         foo = build_map_objects(&world, &world.monster, 1, 1 + rrand() % 27);
 178         foo = build_map_objects(&world, foo, 2, 1 + rrand() % 9);
 179         build_map_objects(&world, foo, 3, 1 + rrand() % 3);
 180         foo = build_map_objects(&world, &world.item, 4, 1 + rrand() % 3);
 181         build_map_objects(&world, foo, 5, 1 + rrand() % 3);
 182     }
 183
 184     /* Initialize window system and windows. */
 185     WINDOW * screen = initscr();
 186     set_cleanup_flag(CLEANUP_NCURSES);
 187     noecho();
 188     curs_set(0);
 189     keypad(screen, TRUE);
 190     raw();
 191     init_keybindings(&world);
 192     set_cleanup_flag(CLEANUP_KEYBINDINGS);
 193     struct WinMeta win_meta;
 194     char * err_winmem = "Trouble with init_win:meta() or draw_all_wins() in "
 195                         "main().";
 196     exit_err(init_win_meta(screen, &win_meta), &world, err_winmem);
 197     world.wins.meta = &win_meta;
 198     struct Win win_keys = init_win(&win_meta, "Keys",
 199                                      0, 29, &world, draw_keys_win);
 200     world.wins.keys = &win_keys;
 201     struct Win win_info = init_win(&win_meta, "Info",
 202                                    3, 20, &world, draw_info_win);
 203     world.wins.info = &win_info;
 204     uint16_t height_logwin = win_meta.padframe.size.y
 205                              - (2 + win_info.frame.size.y);
 206     struct Win win_log = init_win(&win_meta, "Log",
 207                                   height_logwin, 20, &world, draw_log_win);
 208     world.wins.log = &win_log;
 209     uint16_t width_mapwin = win_meta.padframe.size.x - win_keys.frame.size.x
 210                             - win_log.frame.size.x - 2;
 211     struct Win win_map = init_win(&win_meta, "Map",
 212                                   0, width_mapwin, &world, draw_map_win);
 213     world.wins.map = &win_map;
 214     toggle_window(&win_meta, world.wins.keys);
 215     toggle_window(&win_meta, world.wins.map);
 216     toggle_window(&win_meta, world.wins.info);
 217     toggle_window(&win_meta, world.wins.log);
 218
 219     /* Replay mode. */
 220     int key;
 221     uint8_t quit_called = 0;
 222     uint8_t await_actions = 1;
 223     if (0 == world.interactive)
 224     {
 225         int action;
 226         while (1)
 227         {
 228             if (start_turn == world.turn)
 229             {
 230                 start_turn = 0;
 231             }
 232             if (0 == start_turn)
 233             {
 234                 exit_err(draw_all_wins(&win_meta), &world, err_winmem);
 235                 key = getch();
 236             }
 237             if (1 == await_actions
 238                 && (world.turn < start_turn
 239                     || key == get_action_key(world.keybindings,
 240                                              "wait / next turn")) )
 241             {
 242                 action = getc(file);
 243                 if (EOF == action)
 244                 {
 245                     start_turn = 0;
 246                     await_actions = 0;
 247                 }
 248                 else if (0 == action)
 249                 {
 250                     player_wait (&world);
 251                 }
 252                 else if (NORTH == action)
 253                 {
 254                     move_player(&world, NORTH);
 255                 }
 256                 else if (EAST  == action)
 257                 {
 258                     move_player(&world, EAST);
 259                 }
 260                 else if (SOUTH == action)
 261                 {
 262                     move_player(&world, SOUTH);
 263                 }
 264                 else if (WEST == action)
 265                 {
 266                     move_player(&world, WEST);
 267                 }
 268             }
 269             else
 270             {
 271                 quit_called = meta_keys(key, &world);
 272                 if (1 == quit_called)
 273                 {
 274                     err_c = "Trouble closing 'record' file (fclose() in "
 275                             "main()).";
 276                     exit_err(fclose(file), &world, err_c);
 277                     exit_game(&world);
 278                 }
 279             }
 280         }
 281     }
 282
 283     /* Interactive mode. */
 284     else
 285     {
 286         uint32_t last_turn = 0;
 287         while (1)
 288         {
 289             if (last_turn != world.turn)
 290             {
 291                 save_game(&world);
 292                 last_turn = world.turn;
 293             }
 294             if (1 == await_actions && 0 == player.hitpoints)
 295             {
 296                 await_actions = 0;
 297             }
 298             draw_all_wins (&win_meta);
 299             key = getch();
 300             if      (1 == await_actions
 301                      && key == get_action_key(world.keybindings,
 302                                               "player up"))
 303             {
 304                 move_player(&world, NORTH);
 305             }
 306             else if (1 == await_actions
 307                      && key == get_action_key(world.keybindings,
 308                                               "player right"))
 309             {
 310                 move_player(&world, EAST);
 311             }
 312             else if (1 == await_actions
 313                      && key == get_action_key(world.keybindings,
 314                                               "player down"))
 315             {
 316                 move_player(&world, SOUTH);
 317             }
 318             else if (1 == await_actions
 319                      && key == get_action_key(world.keybindings,
 320                                               "player left"))
 321             {
 322                 move_player(&world, WEST);
 323             }
 324             else if (1 == await_actions
 325                      && key == get_action_key(world.keybindings,
 326                                               "wait / next turn"))
 327             {
 328                 player_wait (&world);
 329             }
 330             else
 331             {
 332                 quit_called = meta_keys(key, &world);
 333                 if (1 == quit_called)
 334                 {
 335                     exit_game(&world);
 336                 }
 337             }
 338         }
 339     }
 340 }