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