3 * This file is part of PlomRogue. PlomRogue is licensed under the GPL version 3
4 * or any later version. For details on its copyright, license, and warranties,
5 * see the file NOTICE in the root directory of the PlomRogue source package.
8 #define _POSIX_C_SOURCE 200112L /* snrpintf() */
10 #include <errno.h> /* global errno */
11 #include <limits.h> /* PIPE_BUF */
12 #include <stddef.h> /* NULL */
13 #include <stdint.h> /* uint8_t, uint16_t, uint32_t, UINT8_MAX */
14 #include <stdio.h> /* defines FILE, sprintf(), fprintf() */
15 #include <stdlib.h> /* free() */
16 #include <string.h> /* strlen(), snprintf(), memcpy(), strchr() */
17 #include <sys/types.h> /* time_t */
18 #include <time.h> /* time(), nanosleep() */
19 #include "../common/readwrite.h" /* atomic_write_start(), atomic_write_finish(),
20 * get_message_from_queue(), try_fwrite(),
21 * read_file_into_queue(), try_fputc()
23 #include "../common/rexit.h" /* exit_trouble() */
24 #include "../common/try_malloc.h" /* try_malloc() */
25 #include "cleanup.h" /* set_cleanup_flag() */
26 #include "hardcoded_strings.h" /* s */
27 #include "map.h" /* init_empty_map() */
28 #include "run.h" /* send_to_outfile() */
29 #include "things.h" /* Thing, ThingType, ThingInMemory, ThingAction,
30 * get_thing_type(), get_player()
32 #include "world.h" /* global world */
36 /* Helpers to write lines of god commands to recreate thing "t". */
37 static void write_key_space(FILE * file, char * key);
38 static void write_value(FILE * file, uint32_t value);
39 static void write_string(FILE * file, char * string);
40 static void write_key_space_value(FILE * file, char * key, uint32_t value);
41 static void write_key_space_string(FILE * file, char * key, char * string);
43 /* Write to "file" game-map-sized "map" in "command"-prefixed numbered lines. */
44 static void write_mem_map(FILE * file, char * map, char * command);
46 /* Write to "file" \n-delimited line of "key" + space + "value" as string. */
47 static void write_thing(FILE * file, struct Thing * t);
49 /* Poll input file for world.queue input. Wait a few seconds until giving up;
50 * poll only every 0.03 seconds. Translate '\n' chars in input file into '\0'.
52 static void try_growing_queue();
54 /* Write world state as visible to clients to its file. Write single dot line to
55 * server output file to satisfy client ping mechanisms.
57 static void update_worldstate_file();
59 /* Write "value" to new \n-delimited line of "file". */
60 static void write_value_as_line(uint32_t value, FILE * file);
62 /* Write to "file" player's inventory, one item name per line. End in "%\n". */
63 static void write_inventory(struct Thing * player, FILE * file);
65 /* Return map cells sequence as visible to the "player", with invisible cells as
66 * whitespace. Super-impose over visible map cells things positioned there,
67 * with animate things overwriting inanimate things, and inanimate consumable
68 * things overwriting inanimate non-consumable things.
70 static char * build_visible_map(struct Thing * player);
72 /* Write to "file" game map as visible to "player" right now, as drawn by
73 * build_visible_map(), and thereafter game map as memorized by player in its
74 * .mem_map and .t_mem. Write one row per \n-delimited line.
76 static void write_map(struct Thing * player, FILE * file);
80 static void write_key_space(FILE * file, char * key)
82 try_fwrite(key, strlen(key), 1, file, __func__);
83 try_fputc(' ', file, __func__);
88 static void write_value(FILE * file, uint32_t value)
90 char * line = try_malloc(11, __func__);
91 exit_trouble(-1 == sprintf(line, "%u", value), __func__, s[S_FCN_SPRINTF]);
92 try_fwrite(line, strlen(line), 1, file, __func__);
98 static void write_string(FILE * file, char * string)
100 uint8_t contains_space = NULL != strchr(string, ' ');
103 try_fputc('\'', file, __func__);
105 try_fwrite(string, strlen(string), 1, file, __func__);
108 try_fputc('\'', file, __func__);
114 static void write_key_space_value(FILE * file, char * key, uint32_t value)
116 write_key_space(file, key);
117 write_value(file, value);
118 try_fputc('\n', file, __func__);
123 static void write_key_space_string(FILE * file, char * key, char * string)
125 write_key_space(file, key);
126 write_string(file, string);
127 try_fputc('\n', file, __func__);
132 static void write_mem_map(FILE * file, char * map, char * command)
136 uint32_t map_size = world.map.length * world.map.length;/* snprintf() */
137 char * map_copy = try_malloc(map_size + 1, __func__); /* reads one */
138 memcpy(map_copy, map, map_size); /* byte beyond map_size */
139 map_copy[map_size] = '\0'; /* if string is not \0-terminated. */
141 char string[UINT8_MAX + 1 + 1];
142 for (y = 0; y < world.map.length; y++)
144 int test = snprintf(string, world.map.length + 1, "%s",
145 map_copy + (y * world.map.length));
146 exit_trouble(test < 0, __func__, "snprintf()");
147 write_key_space(file, command);
148 write_value(file, y);
149 try_fputc(' ', file, __func__);
150 write_string(file, string);
151 try_fputc('\n', file, __func__);
159 static void write_thing(FILE * file, struct Thing * t)
162 for (o = t->owns; o; o = o->next)
164 write_thing(file, o);
166 write_key_space_value(file, s[S_CMD_T_ID], t->id);
167 write_key_space_value(file, s[S_CMD_T_TYPE], t->type);
168 write_key_space_value(file, s[S_CMD_T_POSY], t->pos.y);
169 write_key_space_value(file, s[S_CMD_T_POSX], t->pos.x);
170 write_key_space_value(file, s[S_CMD_T_COMMAND], t->command);
171 write_key_space_value(file, s[S_CMD_T_ARGUMENT], t->arg);
172 write_key_space_value(file, s[S_CMD_T_PROGRESS], t->progress);
173 write_key_space_value(file, s[S_CMD_T_HP], t->lifepoints);
174 for (o = t->owns; o; o = o->next)
176 write_key_space_value(file, s[S_CMD_T_CARRIES], o->id);
178 write_mem_map(file, t->mem_depth_map, s[S_CMD_T_MEMDEPTHMAP]);
179 write_mem_map(file, t->mem_map, s[S_CMD_T_MEMMAP]);
180 struct ThingInMemory * tm = t->t_mem;
181 for (; tm; tm = tm->next)
183 write_key_space(file, s[S_CMD_T_MEMTHING]);
184 write_value(file, tm->type);
185 try_fputc(' ', file, __func__);
186 write_value(file, tm->pos.y);
187 try_fputc(' ', file, __func__);
188 write_value(file, tm->pos.x);
189 try_fputc('\n', file, __func__);
191 try_fputc('\n', file, __func__);
196 static void try_growing_queue()
198 uint8_t wait_seconds = 5;
199 time_t now = time(0);
202 dur.tv_nsec = 33333333;
205 if (read_file_into_queue(world.file_in, &world.queue))
209 nanosleep(&dur, NULL);
210 if (time(0) > now + wait_seconds)
219 static void update_worldstate_file()
222 FILE * file = atomic_write_start(s[S_PATH_WORLDSTATE], &path_tmp);
223 struct Thing * player = get_player();
224 write_value_as_line(world.turn, file);
225 write_value_as_line(player->lifepoints, file);
226 write_inventory(player, file);
227 write_value_as_line(player->pos.y, file);
228 write_value_as_line(player->pos.x, file);
229 write_value_as_line(world.map.length, file);
230 write_map(player, file);
231 atomic_write_finish(file, s[S_PATH_WORLDSTATE], path_tmp);
232 set_cleanup_flag(CLEANUP_WORLDSTATE);
234 try_fwrite(dot, strlen(dot), 1, world.file_out, __func__);
235 fflush(world.file_out);
240 static void write_value_as_line(uint32_t value, FILE * file)
242 char write_buf[12]; /* Holds 10 digits of uint32_t maximum + \n + \0. */
243 exit_trouble(sprintf(write_buf,"%u\n",value) < 0,__func__,s[S_FCN_SPRINTF]);
244 try_fwrite(write_buf, strlen(write_buf), 1, file, __func__);
249 static void write_inventory(struct Thing * player, FILE * file)
251 struct Thing * owned = player->owns;
254 char * empty = "(none)\n";
255 try_fwrite(empty, strlen(empty), 1, file, __func__);
260 for (q = 0; owned; q++)
262 struct ThingType * tt = get_thing_type(owned->type);
263 try_fwrite(tt->name, strlen(tt->name), 1, file, __func__);
264 try_fputc('\n', file, __func__);
268 try_fputc('%', file, __func__);
269 try_fputc('\n', file, __func__);
274 static char * build_visible_map(struct Thing * player)
277 init_empty_map(&visible_map);
278 if (player->fov_map) /* May fail if player thing was created / positioned */
279 { /* by god command after turning off FOV building. */
281 for (; pos_i < (uint32_t) world.map.length * world.map.length; pos_i++)
283 if (player->fov_map[pos_i] == 'v')
285 visible_map[pos_i] = world.map.cells[pos_i];
291 for (i = 0; i < 3; i++)
293 for (t = world.things; t != 0; t = t->next)
295 if ('v' == player->fov_map[t->pos.y*world.map.length+t->pos.x])
297 struct ThingType * tt = get_thing_type(t->type);
298 if ( (0 == i && !t->lifepoints && !tt->consumable)
299 || (1 == i && !t->lifepoints && tt->consumable)
300 || (2 == i && t->lifepoints))
303 visible_map[t->pos.y * world.map.length + t->pos.x] = c;
314 static void write_map(struct Thing * player, FILE * file)
316 char * visible_map = build_visible_map(player);
318 for (y = 0; y < world.map.length; y++)
320 for (x = 0; x < world.map.length; x++)
322 try_fputc(visible_map[y * world.map.length + x], file, __func__);
324 try_fputc('\n', file, __func__);
327 uint32_t map_size = world.map.length * world.map.length;
328 char * mem_map = try_malloc(map_size, __func__);
329 memcpy(mem_map, player->mem_map, map_size);
331 struct ThingInMemory * tm;
332 for (i = 0; i < 2; i++)
334 for (tm = player->t_mem; tm; tm = tm->next)
336 if (' ' != player->mem_map[tm->pos.y*world.map.length+tm->pos.x])
338 struct ThingType * tt = get_thing_type(tm->type);
339 if ( (0 == i && !tt->consumable)
340 || (1 == i && tt->consumable))
342 char c = tt->char_on_map;
343 mem_map[tm->pos.y * world.map.length + tm->pos.x] = c;
348 for (y = 0; y < world.map.length; y++)
350 for (x = 0; x < world.map.length; x++)
352 try_fputc(mem_map[y * world.map.length + x], file, __func__);
354 try_fputc('\n', file, __func__);
361 extern char * io_round()
363 if (world.queue && strlen(world.queue))
365 return get_message_from_queue(&world.queue);
369 update_worldstate_file();
370 send_to_outfile("WORLD_UPDATED\n", 1);
374 return get_message_from_queue(&world.queue);
379 extern void save_world()
382 FILE * file = atomic_write_start(s[S_PATH_SAVE], &path_tmp);
383 write_key_space_value(file, s[S_CMD_MAPLENGTH], world.map.length);
384 write_key_space_value(file, s[S_CMD_PLAYTYPE], world.player_type);
385 try_fputc('\n', file, __func__);
386 struct ThingAction * ta;
387 for (ta = world.thing_actions; ta; ta = ta->next)
389 write_key_space_value(file, s[S_CMD_TA_ID], ta->id);
390 write_key_space_value(file, s[S_CMD_TA_EFFORT], ta->effort);
391 write_key_space_string(file, s[S_CMD_TA_NAME], ta->name);
392 try_fputc('\n', file, __func__);
394 struct ThingType * tt;
395 for (tt = world.thing_types; tt; tt = tt->next)
397 write_key_space_value(file, s[S_CMD_TT_ID], tt->id);
398 write_key_space_value(file, s[S_CMD_TT_STARTN], tt->start_n);
399 write_key_space_value(file, s[S_CMD_TT_HP], tt->lifepoints);
400 int test = fprintf(file, "%s %c\n", s[S_CMD_TT_SYMB], tt->char_on_map);
401 exit_trouble(test < 0, __func__, "fprintf");
402 write_key_space_string(file, s[S_CMD_TT_NAME], tt->name);
403 write_key_space_value(file, s[S_CMD_TT_CONSUM], tt->consumable);
404 write_key_space_value(file, s[S_CMD_TT_PROL], tt->proliferate);
405 try_fputc('\n', file, __func__);
407 for (tt = world.thing_types; tt; tt = tt->next)
409 write_key_space_value(file, s[S_CMD_TT_ID], tt->id);
410 write_key_space_value(file, s[S_CMD_TT_CORPS], tt->corpse_id);
412 try_fputc('\n', file, __func__);
413 write_key_space_value(file, s[S_CMD_SEED_MAP], world.seed_map);
414 write_key_space_value(file, s[S_CMD_SEED_RAND], world.seed);
415 write_key_space_value(file, s[S_CMD_TURN], world.turn);
416 try_fputc('\n', file, __func__);
418 for (t = world.things; t; t = t->next)
420 write_thing(file, t);
422 write_key_space_value(file, s[S_CMD_WORLD_ACTIVE], 1);
423 atomic_write_finish(file, s[S_PATH_SAVE], path_tmp);