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