3 #define _POSIX_C_SOURCE 200809L
5 #include <stddef.h> /* NULL */
6 #include <stdint.h> /* uint8_t, uint16_t, uint32_t */
7 #include <stdio.h> /* FILE, printf(), fflush() */
8 #include <stdlib.h> /* free(), atoi() */
9 #include <string.h> /* strlen(), strcmp() strncmp(), strdup() */
10 #include <unistd.h> /* access() */
11 #include "../common/parse_file.h" /* set_err_line_options(), token_from_line(),
14 #include "../common/readwrite.h" /* try_fopen(), try_fcose(), try_fwrite(),
15 * try_fgets(), textfile_width(), try_fputc()
17 #include "../common/rexit.h" /* exit_trouble(), exit_err() */
18 #include "../common/try_malloc.h" /* try_malloc() */
19 #include "ai.h" /* ai() */
20 #include "cleanup.h" /* set_cleanup_flag(), unset_cleanup_flag() */
21 #include "field_of_view.h" /* build_fov_map() */
22 #include "hardcoded_strings.h" /* s */
23 #include "init.h" /* remake_world() */
24 #include "io.h" /* io_round(), save_world() */
25 #include "map.h" /* remake_map() */
26 #include "thing_actions.h" /* ThingAction */
27 #include "things.h" /* Thing, get_thing(), own_thing(), add_thing(),
28 * get_thing_action_id_by_name(), get_player()
30 #include "world.h" /* global world */
34 /* Parse/apply god command in "tok0"/"tok1" on "t" owning another thing. */
35 static uint8_t parse_carry(char * tok0, char * tok1, struct Thing * t);
37 /* Parse/apply god commansd in "tok0"/"tok1" on positioning a thing "t". */
38 static uint8_t parse_position(char* tok0, char * tok1, struct Thing * t);
40 /* Parse/apply god command in "tok0"/"tok1" oo setting "t"'s thing type. */
41 static uint8_t parse_thing_type(char * tok0, char * tok1, struct Thing * t);
43 /* Parse/apply god command in "tok0"/"tok1" on setting up thing "t". */
44 static uint8_t parse_thing_command(char * tok0, char * tok1, struct Thing * t);
46 /* Parse/apply god command on enabling/disabling generation of fields of view on
47 * god commands that may affect them, via static global "do_fov". On enabling,
48 * (re-)generate all animate things' fields of view.
50 static uint8_t parse_do_fov(char * tok0, char * tok1);
52 /* Parse/apply god command in "tok0"/"tok1" manipulating a thing's state. */
53 static uint8_t parse_thing_manipulation(char * tok0, char * tok1);
55 /* Parse player command in "tok0"/"tok1" to action in player thing. */
56 static uint8_t parse_player_command(char * tok0, char * tok1);
58 /* Compares first line of server out file to world.server_test, aborts if they
59 * don't match, but not before unsetting the flags deleting files in the server
60 * directory, for in that case those must be assumed to belong to another server
63 static void server_test();
65 /* Run the game world and its inhabitants (and their actions) until the player
66 * avatar is free to receive new commands (or is dead).
68 static void turn_over();
72 /* Do god commands to create / position things generate their fields of view? */
73 static uint8_t do_fov = 0;
77 static uint8_t parse_carry(char * tok0, char * tok1, struct Thing * t)
80 if (parse_val(tok0, tok1, s[S_CMD_CARRIES], '8', (char *) &id))
82 if (!err_line(id == t->id, "Thing cannot carry itself."))
84 struct Thing * o = get_thing(world.things, id, 0);
85 if (!err_line(!o, "Thing cannot carry thing that does not exist."))
87 own_thing(&(t->owns), &world.things, id);
98 static uint8_t parse_position(char* tok0, char * tok1, struct Thing * t)
101 if (!strcmp(tok0, s[S_CMD_POS_Y]))
105 else if (!strcmp(tok0, s[S_CMD_POS_X]))
109 if (axis && !parsetest_int(tok1, '8'))
111 uint8_t length = atoi(tok1);
112 char * err = "Position is outside of map.";
113 if (!err_line(length >= world.map.length, err))
119 else if ('x' == axis)
124 t->fov_map= do_fov && t->lifepoints ? build_fov_map(t) : t->fov_map;
133 static uint8_t parse_thing_type(char * tok0, char * tok1, struct Thing * t)
136 if (parse_val(tok0, tok1, s[S_CMD_TYPE], '8', (char *) &type))
138 struct ThingType * tt = world.thing_types;
139 for (; NULL != tt && type != tt->id; tt = tt->next);
140 if (!err_line(!tt, "Thing type does not exist."))
151 static uint8_t parse_thing_command(char * tok0, char * tok1, struct Thing * t)
154 if (parse_val(tok0, tok1, s[S_CMD_COMMAND], '8', (char *) &command))
158 t->command = command;
161 struct ThingAction * ta = world.thing_actions;
162 for (; NULL != ta && command != ta->id; ta = ta->next);
163 if (!err_line(!ta, "Thing action does not exist."))
165 t->command = command;
174 static uint8_t parse_do_fov(char * tok0, char * tok1)
176 if (parse_val(tok0, tok1, s[S_CMD_DO_FOV], '8', (char *) &do_fov))
181 for (ti = world.things; ti; ti = ti->next)
183 ti->fov_map = ti->lifepoints ? build_fov_map(ti) : ti->fov_map;
193 static uint8_t parse_thing_manipulation(char * tok0, char * tok1)
196 static struct Thing * t = NULL;
197 if (t && ( parse_thing_type(tok0, tok1, t)
198 || parse_thing_command(tok0, tok1, t)
199 || parse_val(tok0, tok1, s[S_CMD_ARGUMENT], '8', (char *)&t->arg)
200 || parse_val(tok0,tok1,s[S_CMD_PROGRESS],'8',(char *)&t->progress)
201 || parse_val(tok0, tok1, s[S_CMD_LIFEPOINTS], '8',
202 (char *) &t->lifepoints)
203 || parse_position(tok0, tok1, t)
204 || parse_carry(tok0, tok1, t)));
205 else if (parse_val(tok0, tok1, s[S_CMD_THING], '8', (char *) &id))
207 t = get_thing(world.things, id, 1);
210 t = add_thing(id, 0, 0);
211 set_cleanup_flag(CLEANUP_THINGS);
212 t->fov_map= do_fov && t->lifepoints ? build_fov_map(t) : t->fov_map;
224 static uint8_t parse_player_command(char * tok0, char * tok1)
226 struct Thing * player = get_player();
227 if ( parse_val(tok0, tok1, s[S_CMD_WAIT], '8', (char *) &player->arg)
228 || parse_val(tok0, tok1, s[S_CMD_MOVE], '8', (char *) &player->arg)
229 || parse_val(tok0, tok1, s[S_CMD_PICKUP], '8', (char *) &player->arg)
230 || parse_val(tok0, tok1, s[S_CMD_DROP], '8', (char *) &player->arg)
231 || parse_val(tok0, tok1, s[S_CMD_USE], '8', (char *) &player->arg))
233 player->command = get_thing_action_id_by_name(tok0);
245 static void server_test()
247 char * f_name = "server_test()";
248 char test[10 + 1 + 10 + 1 + 1];
249 FILE * file = try_fopen(s[S_PATH_OUT], "r", f_name);
250 try_fgets(test, 10 + 10 + 1 + 1, file, f_name);
251 try_fclose(file, f_name);
252 if (strcmp(test, world.server_test))
254 unset_cleanup_flag(CLEANUP_WORLDSTATE);
255 unset_cleanup_flag(CLEANUP_OUT);
256 unset_cleanup_flag(CLEANUP_IN);
257 char * msg = "Server test string in server output file does not match. "
258 "This indicates that the current server process has been "
259 "superseded by another one.";
266 static void turn_over()
268 struct Thing * player = get_player();
269 struct Thing * thing = player;
270 uint16_t start_turn = world.turn;
271 while ( 0 < player->lifepoints
272 || (0 == player->lifepoints && start_turn == world.turn))
277 thing = world.things;
279 if (0 < thing->lifepoints)
281 if (0 == thing->command)
290 struct ThingAction * ta = world.thing_actions;
291 while (ta->id != thing->command)
295 if (thing->progress == ta->effort)
308 static void record_msg(char * msg)
310 char * f_name = "record_msg()";
312 FILE * file_tmp = atomic_write_start(s[S_PATH_RECORD], &path_tmp);
313 if (!access(s[S_PATH_RECORD], F_OK))
315 FILE * file_read = try_fopen(s[S_PATH_RECORD], "r", f_name);
316 uint32_t linemax = textfile_width(file_read);
317 char * line = try_malloc(linemax + 1, f_name);
318 while (try_fgets(line, linemax + 1, file_read, f_name))
320 try_fwrite(line, strlen(line), 1, file_tmp, f_name);
323 try_fclose(file_read, f_name);
325 try_fwrite(msg, strlen(msg), 1, file_tmp, f_name);
326 try_fputc('\n', file_tmp, f_name);
327 atomic_write_finish(file_tmp, s[S_PATH_RECORD], path_tmp);
332 extern void obey_msg(char * msg, uint8_t do_record)
334 set_err_line_options("Trouble with message: ", msg, 0, 0);
335 char * msg_copy = strdup(msg);
336 char * tok0 = token_from_line(msg_copy);
337 char * tok1 = token_from_line(NULL);
338 char * tok2 = token_from_line(NULL);
339 if (err_line(!(tok0 && tok1) || tok2, "Bad number of tokens."))
343 if ( parse_thing_manipulation(tok0, tok1)
344 || parse_player_command(tok0, tok1)
345 || parse_val(tok0, tok1, s[S_CMD_SEED_RAND], 'U', (char *) &world.seed)
346 || parse_val(tok0, tok1, s[S_CMD_TURN], 'u', (char *) &world.turn)
347 || parse_do_fov(tok0, tok1));
348 else if (parse_val(tok0,tok1,s[S_CMD_SEED_MAP],'U',(char *)&world.seed_map))
353 else if (parse_val(tok0, tok1, s[S_CMD_MAKE_WORLD],'U',(char *)&world.seed))
359 err_line(1, "Unknown command.");
363 world.last_update_turn = 0;
374 extern uint8_t io_loop()
376 char * f_name = "io_loop()";
380 char * msg = io_round();
385 if (world.is_verbose)
387 exit_trouble(-1 == printf("Input: %s\n", msg), f_name, "printf()");
389 if (!strcmp("QUIT", msg))
394 if (!strcmp("PING", msg))
397 char * pong = "PONG\n";
398 try_fwrite(pong, strlen(pong), 1, world.file_out, f_name);
399 fflush(world.file_out);