4 #include <stdio.h> /* for rename() */
5 #include <unistd.h> /* for unlink(), acess() */
6 #include <stdlib.h> /* for calloc(), free() */
7 #include <string.h> /* for strlen(), strcmp(), memcpy() */
8 #include <stdint.h> /* for uint8_t, uint16_t */
9 #include "readwrite.h" /* for [read/write]_uint[8/16/32][_bigendian]() */
10 #include "map_objects.h" /* for struct Monster, write_map_objects(), */
11 #include "map_object_actions.h" /* for is_passable(), move_monster() */
12 #include "map.h" /* for Map struct */
13 #include "main.h" /* for World struct */
14 #include "yx_uint16.h" /* for yx_uint16 struct */
15 #include "rrand.h" /* for rrand(), rrand_seed() */
16 #include "rexit.h" /* for exit_err() */
20 extern void update_log(struct World * world, char * text)
22 static char * last_msg; /* TODO: valgrind is dissatisfied */
23 if (0 == last_msg) /* with this calloc'd pointer */
24 { /* never being freed. */
25 last_msg = calloc(1, sizeof(char)); /* Rectify this ? */
28 uint16_t len_old = strlen(world->log);
29 if (0 == strcmp(last_msg, text))
31 uint16_t len_whole = len_old + 1;
32 new_text = calloc(len_whole + 1, sizeof(char));
33 memcpy(new_text, world->log, len_old);
34 memcpy(new_text + len_old, ".", 1);
38 uint16_t len_new = strlen(text);
39 uint16_t len_whole = len_old + len_new + 1;
40 new_text = calloc(len_whole, sizeof(char));
41 memcpy(new_text, world->log, len_old);
42 memcpy(new_text + len_old, text, len_new);
43 last_msg = calloc(len_new + 1, sizeof(char));
44 memcpy(last_msg, text, len_new);
47 world->log = new_text;
52 extern uint16_t center_offset(uint16_t pos, uint16_t mapsize,
56 if (mapsize > framesize)
58 if (pos > framesize / 2)
60 if (pos < mapsize - (framesize / 2))
62 offset = pos - (framesize / 2);
66 offset = mapsize - framesize;
75 extern void turn_over(struct World * world, char action)
77 char * err_open = "Trouble in turn_over() with fopen() "
78 "opening file 'record_tmp' for appending.";
79 char * err_write = "Trouble in turn_over() with write_uint8() "
80 "writing to opened file 'record_tmp'.";
81 char * err_close = "Trouble in turn_over() with fclose() "
82 "closing opened file 'record'.";
83 char * err_unl = "Trouble in turn_over() with unlink() "
84 "unlinking old file 'record'.";
85 char * err_move = "Trouble in turn_over() with rename() "
86 "renaming file 'record_tmp' to 'record'.";
87 char * recordfile_tmp = "record_tmp";
88 char * recordfile = "record";
89 if (1 == world->interactive)
91 FILE * file_old = fopen(recordfile, "r");
92 FILE * file_new = fopen(recordfile_tmp, "w");
93 exit_err(0 == file_old, world, err_open);
94 char c = fgetc(file_old);
97 exit_err(write_uint8(c, file_new), world, err_write);
100 exit_err(fclose(file_old), world, err_close);
101 exit_err(write_uint8(action, file_new), world, err_write);
102 err_close = "Trouble in turn_over() with fclose() "
103 "closing opened file 'record_tmp'.";
104 exit_err(fclose(file_new), world, err_close);
105 exit_err(unlink(recordfile), world, err_unl);
106 exit_err(rename(recordfile_tmp, recordfile), world, err_move);
109 rrand_seed(world->seed * world->turn);
110 struct Monster * monster;
111 for (monster = world->monster;
113 monster = monster->map_obj.next)
115 move_monster(world, monster);
121 extern void save_game(struct World * world)
123 char * err_open = "Trouble in save_game() with fopen() "
124 "opening file 'savefile_tmp' for writing.";
125 char * err_write = "Trouble in save_game() "
126 "writing to opened file 'savefile_tmp'.";
127 char * err_close = "Trouble in save_game() with fclose() "
128 "closing opened file 'savefile_tmp'.";
129 char * err_unl = "Trouble in save_game() with unlink() "
130 "unlinking old 'savefile' file.";
131 char * err_move = "Trouble in save_game() with rename() "
132 "renaming 'file savefile_tmp' to 'savefile'.";
133 char * savefile_tmp = "savefile_tmp";
134 char * savefile = "savefile";
135 FILE * file = fopen(savefile_tmp, "w");
136 exit_err(0 == file, world, err_open);
137 if ( write_uint32_bigendian(world->seed, file)
138 || write_uint32_bigendian(world->turn, file)
139 || write_uint16_bigendian(world->score, file)
140 || write_uint16_bigendian(world->player->pos.y + 1, file)
141 || write_uint16_bigendian(world->player->pos.x + 1, file)
142 || write_uint8(world->player->hitpoints, file)
143 || write_map_objects(world, world->monster, file)
144 || write_map_objects(world, world->item, file))
146 exit_err(1, world, err_write);
148 exit_err(fclose(file), world, err_close);
149 if (!access(savefile, F_OK))
151 exit_err(unlink(savefile), world, err_unl);
153 exit_err(rename(savefile_tmp, savefile), world, err_move);
158 extern struct yx_uint16 find_passable_pos(struct Map * map)
160 struct yx_uint16 pos;
161 for (pos.y = pos.x = 0; 0 == is_passable(map, pos);)
163 pos.y = rrand() % map->size.y;
164 pos.x = rrand() % map->size.x;