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 200809L /* strdup() */
10 #include <stddef.h> /* NULL */
11 #include <stdint.h> /* uint8_t, uint16_t, uint32_t, int16_t */
12 #include <stdio.h> /* FILE, printf(), fflush() */
13 #include <stdlib.h> /* atoi(), free() */
14 #include <string.h> /* strlen(), strcmp(), strncmp(), strdup() */
15 #include <time.h> /* time_t, time() */
16 #include <unistd.h> /* access() */
17 #include "../common/parse_file.h" /* set_err_line_options(), token_from_line(),
18 * err_line(), err_line_inc(), parse_val(),
21 #include "../common/readwrite.h" /* try_fopen(), try_fcose(), try_fwrite(),
22 * try_fgets(), textfile_width(), try_fputc(),
23 * atomic_write_finish(), build_temp_path()
25 #include "../common/rexit.h" /* exit_trouble(), exit_err() */
26 #include "../common/try_malloc.h" /* try_malloc() */
27 #include "ai.h" /* ai() */
28 #include "cleanup.h" /* unset_cleanup_flag() */
29 #include "field_of_view.h" /* update_map_memory() */
30 #include "god_commands.h" /* parse_god_command_(1|2|3)arg() */
31 #include "hardcoded_strings.h" /* s */
32 #include "io.h" /* io_round(), save_world() */
33 #include "thing_actions.h" /* hunger(), try_healing() */
34 #include "things.h" /* Thing, ThingType, ThingInMemory, get_player(),
35 * get_thing_action_id_by_name(), try_thing_proliferation()
37 #include "world.h" /* world */
41 /* If "string" and "comparand" match in string, set "c_to_set" to value." */
42 static uint8_t set_char_by_string_comparison(char * string, char * comparand,
43 char * c_to_set, char value);
45 /* Return 1 on world.exists, else 0 and err_line() appropriate error message. */
46 static uint8_t player_commands_allowed();
48 /* Parse player commands "tok0" with optional argument "tok1" to player action.
49 * Return 1 on success, 0 on failure.
51 static uint8_t parse_player_command_0arg(char * tok0);
52 static uint8_t parse_player_command_1arg(char * tok0, char * tok1);
54 /* Parse/apply (non-)meta command "tok0" (read further tokens as necessary).
55 * Return 0 on failure, 1 on success, 2 on QUIT meta command.
57 static uint8_t parse_command_nonmeta(char * tok0);
58 static uint8_t parse_command_meta(char * tok0);
60 /* Compare 1st line of server out file to world.server_test, abort if they don't
61 * match, but not before unsetting flags deleting files in the server directory,
62 * for in that case those must be assumed to belong to another server process.
64 static void server_test();
66 /* Return array of IDs of non-owned things in game world, ended by non-ID -1. */
67 static int16_t * build_whitelist();
69 /* Return 1 if value of "id" appears in "whitelist", else 0. */
70 static uint8_t thing_in_whitelist(uint8_t id, int16_t * whitelist);
72 /* Run the game world and its inhabitants (and their actions) until the player
73 * avatar is free to receive new commands (or is dead). Only actions and
74 * proliferations for non-owned things are performed that exist at the start of
75 * the turn jumped into, or started anew by the cycle.
77 static void turn_over();
81 static uint8_t set_char_by_string_comparison(char * string, char * comparand,
82 char * c_to_set, char value)
84 if (!strcmp(string, comparand))
94 static uint8_t player_commands_allowed()
98 return !err_line(1, "No world exists in which to run player commands.");
105 static uint8_t parse_player_command_0arg(char * tok0)
107 struct Thing * player = get_player();
108 if ( !strcmp(tok0, s[S_CMD_WAIT]) || !strcmp(tok0, s[S_CMD_PICKUP])
109 || !strcmp(tok0, s[S_CMD_AI]))
111 if (player_commands_allowed())
113 if (!strcmp(tok0, s[S_CMD_AI]))
119 player->command = get_thing_action_id_by_name(tok0);
130 static uint8_t parse_player_command_1arg(char * tok0, char * tok1)
132 struct Thing * player = get_player();
133 if ( ( parse_val(tok0, tok1, s[S_CMD_DROP], '8', (char *) &player->arg)
134 || parse_val(tok0, tok1, s[S_CMD_USE], '8', (char *) &player->arg))
135 && player_commands_allowed())
137 player->command = get_thing_action_id_by_name(tok0);
140 else if (!strcmp(tok0, s[S_CMD_MOVE]) && player_commands_allowed())
143 if (!( set_char_by_string_comparison(tok1, "east", &dir, 'd')
144 || set_char_by_string_comparison(tok1, "south-east", &dir, 'c')
145 || set_char_by_string_comparison(tok1, "south-west", &dir, 'x')
146 || set_char_by_string_comparison(tok1, "west", &dir, 's')
147 || set_char_by_string_comparison(tok1, "north-west", &dir, 'w')
148 || set_char_by_string_comparison(tok1, "north-east", &dir, 'e')))
153 player->command = get_thing_action_id_by_name(tok0);
165 static uint8_t parse_command_nonmeta(char * tok0)
167 if (parse_player_command_0arg(tok0))
173 char * tok1 = token_from_line(NULL);
174 if (tok1 && ( parse_player_command_1arg(tok0, tok1)
175 || parse_god_command_1arg(tok0, tok1)))
181 char * tok2 = token_from_line(NULL);
182 if (tok2 && parse_god_command_2arg(tok0, tok1, tok2))
188 char * tok3 = token_from_line(NULL);
189 if (tok2 && parse_god_command_3arg(tok0, tok1, tok2, tok3))
201 static uint8_t parse_command_meta(char * tok0)
203 if (!strcmp("QUIT", tok0))
207 if (!strcmp("PING", tok0))
209 send_to_outfile("PONG\n", 1);
212 if (!strcmp("THINGS_HERE", tok0))
214 char * tok1 = token_from_line(NULL);
215 char * tok2 = token_from_line(NULL);
216 if (tok1&&tok2 && !parsetest_int(tok1, '8')&&!parsetest_int(tok2, '8'))
220 err_line(1, "Command only works on existing worlds.");
223 send_to_outfile("THINGS_HERE START\n", 1);
224 struct Thing * player = get_player();
225 if (player->fov_map &&
226 'v' == player->fov_map[atoi(tok1)*world.map.length+atoi(tok2)])
229 for (t = world.things; t; t = t->next)
231 if (t->pos.y == atoi(tok1) && t->pos.x == atoi(tok2))
233 struct ThingType * tt = get_thing_type(t->type);
234 send_to_outfile(tt->name, 0);
235 send_to_outfile("\n", 1);
241 struct ThingInMemory * t_mem;
242 for (t_mem = player->t_mem; t_mem; t_mem = t_mem->next)
244 if (t_mem->pos.y == atoi(tok1) && t_mem->pos.x == atoi(tok2))
246 struct ThingType * tt = get_thing_type(t_mem->type);
247 send_to_outfile(tt->name, 0);
248 send_to_outfile("\n", 1);
252 send_to_outfile("THINGS_HERE END\n", 1);
261 static void server_test()
263 char test[10 + 1 + 10 + 1 + 1];
264 FILE * file = try_fopen(s[S_PATH_OUT], "r", __func__);
265 try_fgets(test, 10 + 10 + 1 + 1, file, __func__);
266 try_fclose(file, __func__);
267 if (strcmp(test, world.server_test))
269 unset_cleanup_flag(CLEANUP_WORLDSTATE);
270 unset_cleanup_flag(CLEANUP_OUT);
271 unset_cleanup_flag(CLEANUP_IN);
272 char * msg = "Server test string in server output file does not match. "
273 "This indicates that the current server process has been "
274 "superseded by another one.";
281 static int16_t * build_whitelist()
283 uint16_t i_things = NULL != world.things;
284 struct Thing * t = world.things;
285 for (; t; t = t->next, i_things++);
286 int16_t * whitelist = try_malloc(i_things * sizeof(int16_t), __func__);
287 for (i_things = 0, t = world.things; t;
288 whitelist[i_things] = t->id, t = t->next, i_things++);
289 whitelist[i_things] = -1;
295 static uint8_t thing_in_whitelist(uint8_t id, int16_t * whitelist)
298 for (i = 0; -1 < whitelist[i]; i++)
300 if ((int16_t) id == whitelist[i])
310 static void turn_over()
312 struct Thing * player = get_player();
313 struct Thing * thing = player;
314 int16_t * whitelist = build_whitelist();
315 while (0 < player->lifepoints)
320 thing = world.things;
322 whitelist = build_whitelist();/* The whitelist excludes things */
323 } /* that appear only during the turn.*/
324 if (thing_in_whitelist(thing->id, whitelist))
326 if (0 < thing->lifepoints)
328 if (0 == thing->command)
330 update_map_memory(thing, 1);
339 struct ThingAction * ta = get_thing_action(thing->command);
340 if (thing->progress == ta->effort)
348 try_thing_proliferation(thing);
357 extern void send_to_outfile(char * answer, uint8_t flush)
359 try_fwrite(answer, strlen(answer), 1, world.file_out, __func__);
362 fflush(world.file_out);
368 extern void record(char * msg, uint8_t force)
370 static FILE * file_tmp = NULL;
371 static time_t save_wait = 0;
372 static char * path_tmp;
375 path_tmp = build_temp_path(s[S_PATH_RECORD]);
376 file_tmp = try_fopen(path_tmp, "w", __func__);
377 if (!access(s[S_PATH_RECORD], F_OK))
379 FILE * file_read = try_fopen(s[S_PATH_RECORD], "r", __func__);
380 uint32_t linemax = textfile_width(file_read);
381 char * line = try_malloc(linemax + 1, __func__);
382 while (try_fgets(line, linemax + 1, file_read, __func__))
384 try_fwrite(line, strlen(line), 1, file_tmp, __func__);
387 try_fclose(file_read, __func__);
392 try_fwrite(msg, strlen(msg), 1, file_tmp, __func__);
393 try_fputc('\n', file_tmp, __func__);
395 if (force || time(NULL) > save_wait + 15)
397 save_wait = time(NULL);
399 atomic_write_finish(file_tmp, s[S_PATH_RECORD], path_tmp);
406 extern uint8_t obey_msg(char * msg, uint8_t obey_state)
408 if (world.is_verbose)
410 exit_trouble(-1 == printf("Input: %s\n", msg), __func__, "printf");
412 set_err_line_options("Trouble with message: ", msg, 0);
413 char * msg_copy = strdup(msg);
414 char * tok0 = token_from_line(msg_copy);
418 ret = parse_command_meta(tok0);
419 if (ret || (obey_state < 2 && parse_command_nonmeta(tok0)))
432 char * tokplus = token_from_line(NULL);
433 err_line(!(!tokplus), "Too many arguments, ignoring overflow.");
435 else if (world.replay)
439 else if (!world.replay)
441 err_line(1, "Invalid command/argument or bad number of tokens.");
450 extern uint8_t io_loop(uint8_t obey_state)
454 char * msg = io_round();
458 uint8_t ret = obey_msg(msg, obey_state);
460 if ( (!world.replay && 2 == ret)
461 || ( world.replay && 2 <= ret))