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