/* src/server/io.c */
+#define _POSIX_C_SOURCE 199309L
#include "io.h"
#include <errno.h> /* global errno */
-#include <fcntl.h> /* open(), O_RDONLY, O_NONBLOCK */
#include <limits.h> /* PIPE_BUF */
#include <stddef.h> /* size_t, NULL */
#include <stdint.h> /* uint8_t, uint16_t, uint32_t */
-#include <stdio.h> /* define FILE, sprintf() */
+#include <stdio.h> /* defines EOF, FILE, sprintf() */
#include <stdlib.h> /* free() */
-#include <string.h> /* strlen(), memset(), memcpy() */
-#include <unistd.h> /* read(), close() */
+#include <string.h> /* strlen(), memcpy(), memset() */
+#include <sys/types.h> /* time_t */
+#include <time.h> /* time(), nanosleep() */
#include "../common/readwrite.h" /* try_fopen(), try_fclose_unlink_rename(),
- * try_fwrite(), try_fputc()
+ * try_fwrite(), try_fputc(), try_fgetc()
*/
#include "../common/rexit.h" /* exit_trouble() */
#include "../common/try_malloc.h" /* try_malloc() */
#include "cleanup.h" /* set_cleanup_flag() */
-#include "map_objects.h" /* structs MapObj, MapObjDef, get_map_obj_def() */
+#include "field_of_view.h" /* VISIBLE */
+#include "hardcoded_strings.h" /* s */
+#include "map.h" /* yx_to_map_pos() */
+#include "things.h" /* Thing, ThingType, get_thing_type(), get_player() */
#include "world.h" /* global world */
+/* Write to "file" god commands (one per line) to recreate thing "t". */
+static void write_key_value(FILE * file, char * key, uint32_t value);
+
+/* Write to "file" \n-delimited line of "key" + space + "value" as string. */
+static void write_thing(FILE * file, struct Thing * t);
+
/* Cut out and return first \0-terminated string from world.queue and
* appropriately reduce world.queue_size. Return NULL if queue is empty.
* Superfluous \0 bytes after the string are also cut out. Should the queue
*/
static char * get_message_from_queue();
-/* Read fifo input to put into queue. Only stop reading when bytes were received
- * and the receiving has stopped. Read max. PIPE_BUF-sized chunks for atomicity.
+/* Poll input file for world.queue input. Wait a few seconds until giving up;
+ * poll only every 0.03 seconds.. Translate '\n' chars in input file into '\0'.
*/
-static void read_fifo_into_queue();
+static void read_file_into_queue();
-/* Write to output file the world state as it is to be visible to clients. */
-static void update_out_file();
+/* Write world state as visible to clients to its file. Write single dot line to
+ * server output file to satisfy client ping mechanisms.
+ */
+static void update_worldstate_file();
/* Write "value" to new \n-delimited line of "file". */
static void write_value_as_line(uint32_t value, FILE * file);
/* Write to "file" player's inventory, one item name per line. End in "%\n". */
-static void write_inventory(struct MapObj * player, FILE * file);
+static void write_inventory(struct Thing * player, FILE * file);
-/* Write to "file" game map, with map objects super-imposed. Write one row per
- * \n-delimited line. Super-impose animated objects over inanimate objects.
+/* Return map cells sequence as visible to the "player", with invisible cells as
+ * whitespace. Super-impose over visible map cells things positioned there.
*/
-static void write_map(FILE * file);
+static char * build_visible_map(struct Thing * player);
+/* Write to "file" game map as visible to "player", build_visible_map()-drawn.
+ * Write one row per \n-delimited line.
+ */
+static void write_map(struct Thing * player, FILE * file);
-static char * get_message_from_queue()
+
+static void write_key_value(FILE * file, char * key, uint32_t value)
{
- char * f_name = "get_message_from_queue()";
- char * message = NULL;
- size_t cutout_len = strlen(world.queue);
- if (0 < cutout_len)
+ char * f_name = "write_key_value()";
+ try_fwrite(key, strlen(key), 1, file, f_name);
+ try_fputc(' ', file, f_name);
+ char * line = try_malloc(11, f_name);
+ exit_trouble(-1 == sprintf(line, "%u", value), f_name, "sprintf()");
+ try_fwrite(line, strlen(line), 1, file, f_name);
+ free(line);
+ try_fputc('\n', file, f_name);
+}
+
+
+
+static void write_thing(FILE * file, struct Thing * t)
+{
+ char * f_name = "write_thing()";
+ struct Thing * o;
+ for (o = t->owns; o; o = o->next)
{
- cutout_len++;
- message = try_malloc(cutout_len, f_name);
- memcpy(message, world.queue, cutout_len);
+ write_thing(file, o);
}
- for (;
- cutout_len != world.queue_size && '\0' == world.queue[cutout_len];
- cutout_len++);
- world.queue_size = world.queue_size - cutout_len;
- if (0 == world.queue_size)
+ write_key_value(file, s[CMD_THING], t->id);
+ write_key_value(file, s[CMD_TYPE], t->type);
+ write_key_value(file, s[CMD_POS_Y], t->pos.y);
+ write_key_value(file, s[CMD_POS_X], t->pos.x);
+ write_key_value(file, s[CMD_COMMAND], t->command);
+ write_key_value(file, s[CMD_ARGUMENT], t->arg);
+ write_key_value(file, s[CMD_PROGRESS], t->progress);
+ write_key_value(file, s[CMD_LIFEPOINTS], t->lifepoints);
+ for (o = t->owns; o; o = o->next)
{
- free(world.queue); /* NULL so read_fifo_into_queue() may free() this */
- world.queue = NULL; /* every time, even when it's un-allocated first. */
+ write_key_value(file, s[CMD_CARRIES], o->id);
}
- else
- {
- char * new_queue = try_malloc(world.queue_size, f_name);
- memcpy(new_queue, &(world.queue[cutout_len]), world.queue_size);
- free(world.queue);
- world.queue = new_queue;
- }
- return message;
+ try_fputc('\n', file, f_name);
}
-static void read_fifo_into_queue()
+static char * get_message_from_queue()
{
- char * f_name = "read_fifo_into_queue()";
- uint32_t buf_size = PIPE_BUF;
- int fdesc_infile = open(world.path_in, O_RDONLY | O_NONBLOCK);
- exit_trouble(-1 == fdesc_infile, "open()", f_name);
- char buf[buf_size];
- memset(buf, 0, buf_size);
- int bytes_read;
- uint8_t read_state = 0; /* 0: waiting for input. 1: started receiving it. */
- while (1)
+ char * f_name = "get_message_from_queue()";
+ char * message = NULL;
+ if (world.queue_size)
{
- bytes_read = read(fdesc_infile, buf, buf_size);
- if (bytes_read > 0)
+ size_t cutout_len = strlen(world.queue);
+ if (0 < cutout_len)
+ {
+ cutout_len++;
+ message = try_malloc(cutout_len, f_name);
+ memcpy(message, world.queue, cutout_len);
+ }
+ for (;
+ cutout_len != world.queue_size && '\0' == world.queue[cutout_len];
+ cutout_len++);
+ world.queue_size = world.queue_size - cutout_len;
+ if (0 == world.queue_size)
+ {
+ free(world.queue); /* NULL so read_file_into_queue() may free() */
+ world.queue = NULL; /* this every time, even when it's */
+ } /* un-allocated first. */
+ else
{
- read_state = 1;
- uint32_t old_queue_size = world.queue_size;
- world.queue_size = world.queue_size + bytes_read;
char * new_queue = try_malloc(world.queue_size, f_name);
- memcpy(new_queue, world.queue, old_queue_size);
- memcpy(&(new_queue[old_queue_size]), buf, bytes_read);
+ memcpy(new_queue, &(world.queue[cutout_len]), world.queue_size);
free(world.queue);
world.queue = new_queue;
- memset(buf, 0, buf_size);
- continue;
}
- exit_trouble(-1 == bytes_read && errno != EAGAIN, "read()", f_name);
- if (1 == read_state)
+ }
+ return message;
+}
+
+
+
+static void read_file_into_queue()
+{
+ char * f_name = "read_file_into_queue()";
+ uint8_t wait_seconds = 5;
+ time_t now = time(0);
+ struct timespec dur;
+ dur.tv_sec = 0;
+ dur.tv_nsec = 33333333;
+ int test;
+ while (EOF == (test = try_fgetc(world.file_in, f_name)))
+ {
+ nanosleep(&dur, NULL);
+ if (time(0) > now + wait_seconds)
+ {
+ return;
+ }
+ }
+ do
+ {
+ char c = (char) test;
+ if ('\n' == c)
{
- break;
+ c = '\0';
}
+ char * new_queue = try_malloc(world.queue_size + 1, f_name);
+ memcpy(new_queue, world.queue, world.queue_size);
+ char * new_pos = new_queue + world.queue_size;
+ * new_pos = c;
+ world.queue_size++;
+ free(world.queue);
+ world.queue = new_queue;
}
- exit_trouble(close(fdesc_infile), f_name, "close()");
+ while (EOF != (test = try_fgetc(world.file_in, f_name)));
}
-static void update_out_file()
+static void update_worldstate_file()
{
- char * f_name = "update_out_file()";
- char path_tmp[strlen(world.path_out) + strlen(world.tmp_suffix) + 1];
- sprintf(path_tmp, "%s%s", world.path_out, world.tmp_suffix);
+ char * f_name = "update_worldstate_file()";
+ uint16_t size = strlen(s[PATH_WORLDSTATE]) + strlen(s[PATH_SUFFIX_TMP]) + 1;
+ char * path_tmp = try_malloc(size, f_name);
+ sprintf(path_tmp, "%s%s", s[PATH_WORLDSTATE], s[PATH_SUFFIX_TMP]);
FILE * file = try_fopen(path_tmp, "w", f_name);
- struct MapObj * player = get_player();
+ struct Thing * player = get_player();
write_value_as_line(world.turn, file);
- write_value_as_line(world.score, file);
write_value_as_line(player->lifepoints, file);
write_inventory(player, file);
write_value_as_line(player->pos.y, file);
write_value_as_line(player->pos.x, file);
- write_value_as_line(world.map.size.y, file);
- write_value_as_line(world.map.size.x, file);
- write_map(file);
+ write_value_as_line(world.map.length, file);
+ write_map(player, file);
if (world.log)
{
try_fwrite(world.log, strlen(world.log), 1, file, f_name);
}
- try_fclose_unlink_rename(file, path_tmp, world.path_out, f_name);
- set_cleanup_flag(CLEANUP_OUTFILE);
+ try_fclose_unlink_rename(file, path_tmp, s[PATH_WORLDSTATE], f_name);
+ free(path_tmp);
+ set_cleanup_flag(CLEANUP_WORLDSTATE);
+ char * dot = ".\n";;
+ try_fwrite(dot, strlen(dot), 1, world.file_out, f_name);
+ fflush(world.file_out);
}
-static void write_inventory(struct MapObj * player, FILE * file)
+static void write_inventory(struct Thing * player, FILE * file)
{
char * f_name = "write_inventory()";
- struct MapObj * owned = player->owns;
+ struct Thing * owned = player->owns;
if (NULL == owned)
{
char * empty = "(none)\n";
uint8_t q;
for (q = 0; NULL != owned; q++)
{
- struct MapObjDef * mod = get_map_object_def(owned->type);
- try_fwrite(mod->name, strlen(mod->name), 1, file, f_name);
+ struct ThingType * tt = get_thing_type(owned->type);
+ try_fwrite(tt->name, strlen(tt->name), 1, file, f_name);
try_fputc('\n', file, f_name);
owned = owned->next;
}
-static void write_map(FILE * file)
+static char * build_visible_map(struct Thing * player)
{
- char * f_name = "write_map()";
- uint32_t map_size = world.map.size.y * world.map.size.x;
- char visible_map[map_size];
- memcpy(visible_map, world.map.cells, map_size);
- struct MapObj * o;
- struct MapObjDef * d;
- char c;
- uint8_t i;
- for (i = 0; i < 2; i++)
- {
- for (o = world.map_objs; o != 0; o = o->next)
+ char * f_name = "build_visible_map()";
+ uint32_t map_size = world.map.length * world.map.length;
+ char * visible_map = try_malloc(map_size, f_name);
+ memset(visible_map, ' ', map_size);
+ if (player->fov_map) /* May fail if player thing was created / positioned */
+ { /* by god command after turning off FOV building. */
+ uint32_t pos_i;
+ for (pos_i = 0; pos_i < map_size; pos_i++)
+ {
+ if (player->fov_map[pos_i] & VISIBLE)
+ {
+ visible_map[pos_i] = world.map.cells[pos_i];
+ }
+ }
+ struct Thing * t;
+ struct ThingType * tt;
+ char c;
+ uint8_t i;
+ for (i = 0; i < 2; i++)
{
- if (( (0 == i && 0 == o->lifepoints)
- || (1 == i && 0 < o->lifepoints)))
+ for (t = world.things; t != 0; t = t->next)
{
- d = get_map_object_def(o->type);
- c = d->char_on_map;
- visible_map[(o->pos.y * world.map.size.x) + o->pos.x] = c;
+ if ( player->fov_map[yx_to_map_pos(&t->pos)] & VISIBLE
+ && ( (0 == i && 0 == t->lifepoints)
+ || (1 == i && 0 < t->lifepoints)))
+ {
+ tt = get_thing_type(t->type);
+ c = tt->char_on_map;
+ visible_map[yx_to_map_pos(&t->pos)] = c;
+ }
}
}
}
+ return visible_map;
+}
+
+
+
+static void write_map(struct Thing * player, FILE * file)
+{
+ char * f_name = "write_map()";
+ char * visible_map = build_visible_map(player);
uint16_t x, y;
- for (y = 0; y < world.map.size.y; y++)
+ for (y = 0; y < world.map.length; y++)
{
- for (x = 0; x < world.map.size.x; x++)
+ for (x = 0; x < world.map.length; x++)
{
- try_fputc(visible_map[(y * world.map.size.x) + x], file, f_name);
+ try_fputc(visible_map[(y * world.map.length) + x], file, f_name);
}
try_fputc('\n', file, f_name);
}
+ free(visible_map);
}
}
if (world.turn != world.last_update_turn)
{
- update_out_file();
+ update_worldstate_file();
world.last_update_turn = world.turn;
}
- read_fifo_into_queue();
- if ('\0' != world.queue[world.queue_size - 1])
+ read_file_into_queue();
+ if (world.queue_size && '\0' != world.queue[world.queue_size - 1])
{
char * new_queue = try_malloc(world.queue_size + 1, f_name);
memcpy(new_queue, world.queue, world.queue_size);
}
return get_message_from_queue();
}
+
+
+
+extern void save_world()
+{
+ char * f_name = "save_world()";
+ char * path = s[PATH_SAVE];
+ FILE * file = try_fopen(path, "w", f_name);
+ write_key_value(file, s[CMD_DO_FOV], 0);
+ try_fputc('\n', file, f_name);
+ write_key_value(file, s[CMD_SEED_MAP], world.seed_map);
+ write_key_value(file, s[CMD_SEED_RAND], world.seed);
+ write_key_value(file, s[CMD_TURN], world.turn);
+ try_fputc('\n', file, f_name);
+ struct Thing * t;
+ for (t = world.things; t; t = t->next)
+ {
+ write_thing(file, t);
+ }
+ write_key_value(file, s[CMD_DO_FOV], 1);
+ try_fclose(file, f_name);
+}
projects / plomrogue / blobdiff