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(0 == 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() or draw_all_wins() in main().";
 193     exit_err(init_win_meta(screen, &win_meta), &world, err_winmem);
 194     struct Win win_keys = init_win(&win_meta, "Keys",
 195                                    0, 29, &world, draw_keys_win);
 196     struct Win win_info = init_win(&win_meta, "Info",
 197                                    3, 20, &world, draw_info_win);
 198     uint16_t height_logwin = win_meta.padframe.size.y
 199                              - (2 + win_info.frame.size.y);
 200     struct Win win_log = init_win(&win_meta, "Log",
 201                                   height_logwin, 20, &world, draw_log_win);
 202     uint16_t width_mapwin = win_meta.padframe.size.x - win_keys.frame.size.x
 203                              - win_log.frame.size.x - 2;
 204     struct Win win_map = init_win(&win_meta, "Map",
 205                                   0, width_mapwin, &world, draw_map_win);
 206     toggle_window(&win_meta, &win_keys);
 207     toggle_window(&win_meta, &win_map);
 208     toggle_window(&win_meta, &win_info);
 209     toggle_window(&win_meta, &win_log);
 210
 211     /* Replay mode. */
 212     int key;
 213     uint8_t quit_called = 0;
 214     uint8_t await_actions = 1;
 215     if (0 == world.interactive)
 216     {
 217         int action;
 218         while (1)
 219         {
 220             if (start_turn == world.turn)
 221             {
 222                 start_turn = 0;
 223             }
 224             if (0 == start_turn)
 225             {
 226                 exit_err(draw_all_wins(&win_meta), &world, err_winmem);
 227                 key = getch();
 228             }
 229             if (1 == await_actions
 230                 && (world.turn < start_turn
 231                     || key == get_action_key(world.keybindings,
 232                                              "wait / next turn")) )
 233             {
 234                 action = getc(file);
 235                 if (EOF == action)
 236                 {
 237                     start_turn = 0;
 238                     await_actions = 0;
 239                 }
 240                 else if (0 == action)
 241                 {
 242                     player_wait (&world);
 243                 }
 244                 else if (NORTH == action)
 245                 {
 246                     move_player(&world, NORTH);
 247                 }
 248                 else if (EAST  == action)
 249                 {
 250                     move_player(&world, EAST);
 251                 }
 252                 else if (SOUTH == action)
 253                 {
 254                     move_player(&world, SOUTH);
 255                 }
 256                 else if (WEST == action)
 257                 {
 258                     move_player(&world, WEST);
 259                 }
 260             }
 261             else
 262             {
 263                 quit_called = meta_keys(key, &world, &win_meta, &win_keys,
 264                                              &win_map, &win_info, &win_log);
 265                 if (1 == quit_called)
 266                 {
 267                     err_c = "Trouble closing 'record' file (fclose() in "
 268                             "main()).";
 269                     exit_err(fclose(file), &world, err_c);
 270                     exit_game(&world);
 271                 }
 272             }
 273         }
 274     }
 275
 276     /* Interactive mode. */
 277     else
 278     {
 279         uint32_t last_turn = 0;
 280         while (1)
 281         {
 282             if (last_turn != world.turn)
 283             {
 284                 save_game(&world);
 285                 last_turn = world.turn;
 286             }
 287             if (1 == await_actions && 0 == player.hitpoints)
 288             {
 289                 await_actions = 0;
 290             }
 291             draw_all_wins (&win_meta);
 292             key = getch();
 293             if      (1 == await_actions
 294                      && key == get_action_key(world.keybindings,
 295                                               "player up"))
 296             {
 297                 move_player(&world, NORTH);
 298             }
 299             else if (1 == await_actions
 300                      && key == get_action_key(world.keybindings,
 301                                               "player right"))
 302             {
 303                 move_player(&world, EAST);
 304             }
 305             else if (1 == await_actions
 306                      && key == get_action_key(world.keybindings,
 307                                               "player down"))
 308             {
 309                 move_player(&world, SOUTH);
 310             }
 311             else if (1 == await_actions
 312                      && key == get_action_key(world.keybindings,
 313                                               "player left"))
 314             {
 315                 move_player(&world, WEST);
 316             }
 317             else if (1 == await_actions
 318                      && key == get_action_key(world.keybindings,
 319                                               "wait / next turn"))
 320             {
 321                 player_wait (&world);
 322             }
 323             else
 324             {
 325                 quit_called = meta_keys(key, &world, &win_meta, &win_keys,
 326                                              &win_map, &win_info, &win_log);
 327                 if (1 == quit_called)
 328                 {
 329                     exit_game(&world);
 330                 }
 331             }
 332         }
 333     }
 334 }