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, &player.pos.y)
 110             || read_uint16_bigendian(file, &player.pos.x)
 111             || read_uint8(file, &player.hitpoints)
 112             || read_map_objects(&world, &world.monster, file)
 113             || read_map_objects(&world, &world.item,    file))
 114         {
 115             exit_err(1, &world, err_r);
 116         }
 117         exit_err(fclose(file), &world, err_c);
 118         player.pos.y--;
 119         player.pos.x--;
 120     }
 121
 122     /* For non-interactive mode, try to load world state from record file. */
 123     else
 124     {
 125         err_o = "Trouble loading record file (fopen() in main()) / "
 126                 "opening file 'record' for reading.";
 127         err_r = "Trouble loading record file (read_uint32_bigendian() in "
 128                 "main()) / reading from opened file 'record'.";
 129         world.turn = 1;
 130         if (0 == world.interactive)
 131         {
 132             file = fopen(recordfile, "r");
 133             exit_err(0 == file, &world, err_o);
 134             exit_err(read_uint32_bigendian(file, &world.seed), &world, err_r);
 135         }
 136
 137         /* For interactive-mode in newly started world, generate a start seed
 138          * from the current time.
 139          */
 140         else
 141         {
 142             world.seed = time(NULL);
 143
 144             err_o        = "Trouble recording new seed (fopen() in main()) / "
 145                            "opening 'record_tmp' file for writing.";
 146             char * err_w = "Trouble recording new seed "
 147                            "(write_uint32_bigendian() in main()) / writing to "
 148                            "opened file 'record_tmp'.";
 149             err_c        = "Trouble recording new seed (fclose() in main()) / "
 150                            "closing opened file 'record_tmp'.";
 151             char * err_m = "Trouble recording new seed (rename() in main()) : "
 152                            "renaming file 'record_tmp' to 'record'.";
 153             file = fopen(recordfile_tmp, "w");
 154             exit_err(0 == file, &world, err_o);
 155             exit_err(write_uint32_bigendian(world.seed, file), &world, err_w);
 156             exit_err(fclose(file), &world, err_c);
 157             exit_err(rename(recordfile_tmp, recordfile), &world, err_m);
 158         }
 159     }
 160
 161
 162     /* Generate map from seed and, if newly generated world, start positions of
 163      * actors.
 164      */
 165     rrand_seed(world.seed);
 166     struct Map map = init_map();
 167     world.map = &map;
 168     set_cleanup_flag(CLEANUP_MAP);
 169     if (1 == world.turn)
 170     {
 171         player.pos = find_passable_pos(world.map);
 172         void * foo;
 173         foo = build_map_objects(&world, &world.monster, 1, 1 + rrand() % 27);
 174         foo = build_map_objects(&world, foo, 2, 1 + rrand() % 9);
 175         build_map_objects(&world, foo, 3, 1 + rrand() % 3);
 176         foo = build_map_objects(&world, &world.item, 4, 1 + rrand() % 3);
 177         build_map_objects(&world, foo, 5, 1 + rrand() % 3);
 178     }
 179
 180     /* Initialize window system and windows. */
 181     WINDOW * screen = initscr();
 182     set_cleanup_flag(CLEANUP_NCURSES);
 183     noecho();
 184     curs_set(0);
 185     keypad(screen, TRUE);
 186     raw();
 187     init_keybindings(&world);
 188     set_cleanup_flag(CLEANUP_KEYBINDINGS);
 189     struct WinMeta win_meta;
 190     char * err_winmem = "Trouble with init_win() or draw_all_wins() in main().";
 191     exit_err(init_win_meta(screen, &win_meta), &world, err_winmem);
 192     struct Win win_keys = init_win(&win_meta, "Keys",
 193                                    0, 29, &world, draw_keys_win);
 194     struct Win win_info = init_win(&win_meta, "Info",
 195                                    2, 20, &world, draw_info_win);
 196     uint16_t height_logwin = win_meta.padframe.size.y
 197                              - (2 + win_info.frame.size.y);
 198     struct Win win_log = init_win(&win_meta, "Log",
 199                                   height_logwin, 20, &world, draw_log_win);
 200     uint16_t width_mapwin = win_meta.padframe.size.x - win_keys.frame.size.x
 201                              - win_log.frame.size.x - 2;
 202     struct Win win_map = init_win(&win_meta, "Map",
 203                                   0, width_mapwin, &world, draw_map_win);
 204     toggle_window(&win_meta, &win_keys);
 205     toggle_window(&win_meta, &win_map);
 206     toggle_window(&win_meta, &win_info);
 207     toggle_window(&win_meta, &win_log);
 208
 209     /* Replay mode. */
 210     int key;
 211     uint8_t quit_called = 0;
 212     uint8_t await_actions = 1;
 213     if (0 == world.interactive)
 214     {
 215         int action;
 216         while (1)
 217         {
 218             if (start_turn == world.turn)
 219             {
 220                 start_turn = 0;
 221             }
 222             if (0 == start_turn)
 223             {
 224                 exit_err(draw_all_wins(&win_meta), &world, err_winmem);
 225                 key = getch();
 226             }
 227             if (1 == await_actions
 228                 && (world.turn < start_turn
 229                     || key == get_action_key(world.keybindings,
 230                                              "wait / next turn")) )
 231             {
 232                 action = getc(file);
 233                 if (EOF == action)
 234                 {
 235                     start_turn = 0;
 236                     await_actions = 0;
 237                 }
 238                 else if (0 == action)
 239                 {
 240                     player_wait (&world);
 241                 }
 242                 else if (NORTH == action)
 243                 {
 244                     move_player(&world, NORTH);
 245                 }
 246                 else if (EAST  == action)
 247                 {
 248                     move_player(&world, EAST);
 249                 }
 250                 else if (SOUTH == action)
 251                 {
 252                     move_player(&world, SOUTH);
 253                 }
 254                 else if (WEST == action)
 255                 {
 256                     move_player(&world, WEST);
 257                 }
 258             }
 259             else
 260             {
 261                 quit_called = meta_keys(key, &world, &win_meta, &win_keys,
 262                                              &win_map, &win_info, &win_log);
 263                 if (1 == quit_called)
 264                 {
 265                     err_c = "Trouble closing 'record' file (fclose() in "
 266                             "main()).";
 267                     exit_err(fclose(file), &world, err_c);
 268                     exit_game(&world);
 269                 }
 270             }
 271         }
 272     }
 273
 274     /* Interactive mode. */
 275     else
 276     {
 277         uint32_t last_turn = 0;
 278         while (1)
 279         {
 280             if (last_turn != world.turn)
 281             {
 282                 save_game(&world);
 283                 last_turn = world.turn;
 284             }
 285             if (1 == await_actions && 0 == player.hitpoints)
 286             {
 287                 await_actions = 0;
 288             }
 289             draw_all_wins (&win_meta);
 290             key = getch();
 291             if      (1 == await_actions
 292                      && key == get_action_key(world.keybindings,
 293                                               "player up"))
 294             {
 295                 move_player(&world, NORTH);
 296             }
 297             else if (1 == await_actions
 298                      && key == get_action_key(world.keybindings,
 299                                               "player right"))
 300             {
 301                 move_player(&world, EAST);
 302             }
 303             else if (1 == await_actions
 304                      && key == get_action_key(world.keybindings,
 305                                               "player down"))
 306             {
 307                 move_player(&world, SOUTH);
 308             }
 309             else if (1 == await_actions
 310                      && key == get_action_key(world.keybindings,
 311                                               "player left"))
 312             {
 313                 move_player(&world, WEST);
 314             }
 315             else if (1 == await_actions
 316                      && key == get_action_key(world.keybindings,
 317                                               "wait / next turn"))
 318             {
 319                 player_wait (&world);
 320             }
 321             else
 322             {
 323                 quit_called = meta_keys(key, &world, &win_meta, &win_keys,
 324                                              &win_map, &win_info, &win_log);
 325                 if (1 == quit_called)
 326                 {
 327                     exit_game(&world);
 328                 }
 329             }
 330         }
 331     }
 332 }