+/* misc.c */
+
#include "misc.h"
-#include <stdlib.h>
-#include <string.h>
-#include "windows.h"
-#include "keybindings.h"
-#include "readwrite.h"
-#include "objects_on_map.h"
-#include "map.h"
-#include "main.h"
-
-uint16_t rrand(char use_seed, uint32_t new_seed) {
-// Pseudo-random number generator (LGC algorithm). Use instead of rand() to ensure portable predictability.
- static uint32_t seed;
- if (0 != use_seed)
- seed = new_seed;
- seed = ((seed * 1103515245) + 12345) % 2147483648; // Values as recommended by POSIX.1-2001 (see rand(3)).
- return (seed / 65536); } // Ignore least significant 16 bits (they are less random).
-
-void update_log (struct World * world, char * text) {
-// Update log by appending text, or by appending a "." if text is the same as the last one.
- static char * last_msg;
- if (0 == last_msg)
- last_msg = calloc(1, sizeof(char));
- char * new_text;
- uint16_t len_old = strlen(world->log);
- if (0 == strcmp(last_msg, text)) {
- uint16_t len_whole = len_old + 1;
- new_text = calloc(len_whole + 1, sizeof(char));
- memcpy(new_text, world->log, len_old);
- memcpy(new_text + len_old, ".", 1); }
- else {
- uint16_t len_new = strlen(text);
- uint16_t len_whole = len_old + len_new + 1;
- new_text = calloc(len_whole, sizeof(char));
- memcpy(new_text, world->log, len_old);
- memcpy(new_text + len_old, text, len_new);
- last_msg = calloc(len_new + 1, sizeof(char));
- memcpy(last_msg, text, len_new); }
- free(world->log);
- world->log = new_text; }
-
-uint16_t center_offset (uint16_t pos, uint16_t mapsize, uint16_t framesize) {
-// Return the offset for display of a map inside a frame centered on pos.
- uint16_t offset = 0;
- if (mapsize > framesize) {
- if (pos > framesize / 2) {
- if (pos < mapsize - (framesize / 2))
- offset = pos - (framesize / 2);
- else
- offset = mapsize - framesize; } }
- return offset; }
-
-void turn_over (struct World * world, char action) {
-// Record action in game record file, increment turn and move enemy.
- if (1 == world->interactive) {
- FILE * file = fopen("record", "a");
- fputc(action, file);
- fclose(file); }
- world->turn++;
- rrand(1, world->seed * world->turn);
- struct Monster * monster;
- for (monster = world->monster; monster != 0; monster = monster->cmo.next)
- move_monster(world, monster); }
-
-void save_game(struct World * world) {
-// Save game data to game file.
- FILE * file = fopen("savefile", "w");
- write_uint32_bigendian(world->seed, file);
- write_uint32_bigendian(world->turn, file);
- write_uint16_bigendian(world->player->pos.y + 1, file);
- write_uint16_bigendian(world->player->pos.x + 1, file);
- fputc(world->player->hitpoints, file);
- write_map_objects (world->monster, file, write_map_objects_monsterdata);
- write_map_objects (world->item, file, readwrite_map_objects_dummy);
- fclose(file); }
-
-void toggle_window (struct WinMeta * win_meta, struct Win * win) {
-// Toggle display of window win.
- if (0 != win->frame.curses_win)
- suspend_win(win_meta, win);
- else
- append_win(win_meta, win); }
-
-void scroll_pad (struct WinMeta * win_meta, char dir) {
-// Try to scroll pad left or right.
- if ('+' == dir)
- reset_pad_offset(win_meta, win_meta->pad_offset + 1);
- else if ('-' == dir)
- reset_pad_offset(win_meta, win_meta->pad_offset - 1); }
-
-void growshrink_active_window (struct WinMeta * win_meta, char change) {
-// Grow or shrink active window horizontally or vertically by one cell size.
- if (0 != win_meta->active) {
- struct yx_uint16 size = win_meta->active->frame.size;
- if (change == '-') size.y--;
- else if (change == '+') size.y++;
- else if (change == '_') size.x--;
- else if (change == '*') size.x++;
- resize_active_win (win_meta, size); } }
-
-unsigned char meta_keys(int key, struct World * world, struct WinMeta * win_meta, struct Win * win_keys,
- struct Win * win_map, struct Win * win_info, struct Win * win_log) {
-// Call some meta program / window management actions dependent on key. Return 1 to signal quitting.
- if (key == get_action_key(world->keybindings, "quit"))
- return 1;
- else if (key == get_action_key(world->keybindings, "scroll pad right"))
- scroll_pad (win_meta, '+');
- else if (key == get_action_key(world->keybindings, "scroll pad left"))
- scroll_pad (win_meta, '-');
- else if (key == get_action_key(world->keybindings, "toggle keys window"))
- toggle_window(win_meta, win_keys);
- else if (key == get_action_key(world->keybindings, "toggle map window"))
- toggle_window(win_meta, win_map);
- else if (key == get_action_key(world->keybindings, "toggle info window"))
- toggle_window(win_meta, win_info);
- else if (key == get_action_key(world->keybindings, "toggle log window"))
- toggle_window(win_meta, win_log);
- else if (key == get_action_key(world->keybindings, "cycle forwards"))
- cycle_active_win(win_meta, 'n');
- else if (key == get_action_key(world->keybindings, "cycle backwards"))
- cycle_active_win(win_meta, 'p');
- else if (key == get_action_key(world->keybindings, "shift forwards"))
- shift_active_win(win_meta, 'f');
- else if (key == get_action_key(world->keybindings, "shift backwards"))
- shift_active_win(win_meta, 'b');
- else if (key == get_action_key(world->keybindings, "grow horizontally"))
- growshrink_active_window(win_meta, '*');
- else if (key == get_action_key(world->keybindings, "shrink horizontally"))
- growshrink_active_window(win_meta, '_');
- else if (key == get_action_key(world->keybindings, "grow vertically"))
- growshrink_active_window(win_meta, '+');
- else if (key == get_action_key(world->keybindings, "shrink vertically"))
- growshrink_active_window(win_meta, '-');
- else if (key == get_action_key(world->keybindings, "save keys"))
- save_keybindings(world);
- else if (key == get_action_key(world->keybindings, "keys nav up"))
- keyswin_move_selection (world, 'u');
- else if (key == get_action_key(world->keybindings, "keys nav down"))
- keyswin_move_selection (world, 'd');
- else if (key == get_action_key(world->keybindings, "keys mod"))
- keyswin_mod_key (world, win_meta);
- else if (key == get_action_key(world->keybindings, "map up"))
- map_scroll (world->map, NORTH, win_map->frame.size);
- else if (key == get_action_key(world->keybindings, "map down"))
- map_scroll (world->map, SOUTH, win_map->frame.size);
- else if (key == get_action_key(world->keybindings, "map right"))
- map_scroll (world->map, EAST, win_map->frame.size);
- else if (key == get_action_key(world->keybindings, "map left"))
- map_scroll (world->map, WEST, win_map->frame.size);
- else if (key == get_action_key(world->keybindings, "map center player"))
- map_center_player (world->map, world->player, win_map->frame.size);
- return 0; }
+#include <stdio.h> /* for rename() */
+#include <unistd.h> /* for unlink(), acess() */
+#include <stdlib.h> /* for calloc(), free() */
+#include <string.h> /* for strlen(), strcmp(), memcpy() */
+#include <stdint.h> /* for uint8_t */
+#include "windows.h" /* for suspend_win(), append_win(), reset_pad_offset(),
+ * resize_active_win(), cycle_active_win(),
+ * shift_active_win(), struct Win, struct WinMeta
+ */
+#include "keybindings.h" /* for get_action_key(), save_keybindings(),
+ * keyswin_move_selection(), keyswin_mod_key()
+ */
+#include "readwrite.h" /* for [read/write]_uint[8/16/32][_bigendian]() */
+#include "map_objects.h" /* for struct Monster, write_map_objects(), */
+#include "map_object_actions.h" /* for is_passable(), move_monster() */
+#include "map.h" /* for map_scroll(),map_center_player(), Map struct,dir enum */
+#include "main.h" /* for World struct */
+#include "yx_uint16.h" /* for yx_uint16 */
+#include "rrand.h" /* for rrand(), rrand_seed() */
+#include "rexit.h" /* for exit_err() */
+
+
+extern void textfile_sizes(FILE * file, uint16_t * linemax_p,
+ uint16_t * n_lines_p)
+{
+ uint16_t n_lines = 0;
+ int c = 0;
+ uint16_t linemax = 0;
+ uint16_t c_count = 0;
+ while (EOF != c)
+ {
+ c_count++;
+ c = getc(file);
+ if ('\n' == c)
+ {
+ if (c_count > linemax)
+ {
+ linemax = c_count + 1;
+ }
+ c_count = 0;
+ if (n_lines_p)
+ {
+ n_lines++;
+ }
+ }
+ }
+ fseek(file, 0, SEEK_SET);
+ * linemax_p = linemax;
+ if (n_lines_p)
+ {
+ * n_lines_p = n_lines;
+ }
+}
+
+
+
+extern void update_log(struct World * world, char * text)
+{
+ static char * last_msg;
+ if (0 == last_msg)
+ {
+ last_msg = calloc(1, sizeof(char));
+ }
+ char * new_text;
+ uint16_t len_old = strlen(world->log);
+ if (0 == strcmp(last_msg, text))
+ {
+ uint16_t len_whole = len_old + 1;
+ new_text = calloc(len_whole + 1, sizeof(char));
+ memcpy(new_text, world->log, len_old);
+ memcpy(new_text + len_old, ".", 1);
+ }
+ else
+ {
+ uint16_t len_new = strlen(text);
+ uint16_t len_whole = len_old + len_new + 1;
+ new_text = calloc(len_whole, sizeof(char));
+ memcpy(new_text, world->log, len_old);
+ memcpy(new_text + len_old, text, len_new);
+ last_msg = calloc(len_new + 1, sizeof(char));
+ memcpy(last_msg, text, len_new);
+ }
+ free(world->log);
+ world->log = new_text;
+}
+
+
+
+extern uint16_t center_offset(uint16_t pos, uint16_t mapsize,
+ uint16_t framesize)
+{
+ uint16_t offset = 0;
+ if (mapsize > framesize)
+ {
+ if (pos > framesize / 2)
+ {
+ if (pos < mapsize - (framesize / 2))
+ {
+ offset = pos - (framesize / 2);
+ }
+ else
+ {
+ offset = mapsize - framesize;
+ }
+ }
+ }
+ return offset;
+}
+
+
+
+extern void turn_over(struct World * world, char action)
+{
+ char * err_open = "Trouble in turn_over() with fopen() "
+ "opening file 'record_tmp' for appending.";
+ char * err_write = "Trouble in turn_over() with write_uint8() "
+ "writing to opened file 'record_tmp'.";
+ char * err_close = "Trouble in turn_over() with fclose() "
+ "closing opened file 'record_tmp'.";
+ char * err_unl = "Trouble in turn_over() with unlink() "
+ "unlinking old file 'record'.";
+ char * err_move = "Trouble in turn_over() with rename() "
+ "renaming file 'record_tmp' to 'record'.";
+ char * recordfile_tmp = "record_tmp";
+ char * recordfile = "record";
+ if (1 == world->interactive)
+ {
+ FILE * file = fopen(recordfile_tmp, "a");
+ exit_err(0 == file, world, err_open);
+ exit_err(write_uint8(action, file), world, err_write);
+ exit_err(fclose(file), world, err_close);
+ exit_err(unlink(recordfile), world, err_unl);
+ exit_err(rename(recordfile_tmp, recordfile), world, err_move);
+ }
+
+ world->turn++;
+ rrand_seed(world->seed * world->turn);
+ struct Monster * monster;
+ for (monster = world->monster;
+ monster != 0;
+ monster = monster->map_obj.next)
+ {
+ move_monster(world, monster);
+ }
+}
+
+
+
+extern void save_game(struct World * world)
+{
+ char * err_open = "Trouble in save_game() with fopen() "
+ "opening file 'savefile_tmp' for writing.";
+ char * err_write = "Trouble in save_game() "
+ "writing to opened file 'savefile_tmp'.";
+ char * err_close = "Trouble in save_game() with fclose() "
+ "closing opened file 'savefile_tmp'.";
+ char * err_unl = "Trouble in save_game() with unlink() "
+ "unlinking old 'savefile' file.";
+ char * err_move = "Trouble in save_game() with rename() "
+ "renaming 'file savefile_tmp' to 'savefile'.";
+ char * savefile_tmp = "savefile_tmp";
+ char * savefile = "savefile";
+ FILE * file = fopen(savefile_tmp, "w");
+ exit_err(0 == file, world, err_open);
+ if ( write_uint32_bigendian(world->seed, file)
+ || write_uint32_bigendian(world->turn, file)
+ || write_uint16_bigendian(world->score, file)
+ || write_uint16_bigendian(world->player->pos.y + 1, file)
+ || write_uint16_bigendian(world->player->pos.x + 1, file)
+ || write_uint8(world->player->hitpoints, file)
+ || write_map_objects(world, world->monster, file)
+ || write_map_objects(world, world->item, file))
+ {
+ exit_err(1, world, err_write);
+ }
+ exit_err(fclose(file), world, err_close);
+ if (!access(savefile, F_OK))
+ {
+ exit_err(unlink(savefile), world, err_unl);
+ }
+ exit_err(rename(savefile_tmp, savefile), world, err_move);
+}
+
+
+
+extern uint8_t toggle_window(struct WinMeta * win_meta, struct Win * win)
+{
+ if (0 != win->frame.curses_win)
+ {
+ return suspend_win(win_meta, win);
+ }
+ else
+ {
+ return append_win(win_meta, win);
+ }
+}
+
+
+
+extern void scroll_pad(struct WinMeta * win_meta, char dir)
+{
+ if ('+' == dir)
+ {
+ reset_pad_offset(win_meta, win_meta->pad_offset + 1);
+ }
+ else if ('-' == dir)
+ {
+ reset_pad_offset(win_meta, win_meta->pad_offset - 1);
+ }
+}
+
+
+
+extern uint8_t growshrink_active_window(struct WinMeta * win_meta, char change)
+{
+ if (0 != win_meta->active)
+ {
+ struct yx_uint16 size = win_meta->active->frame.size;
+ if (change == '-')
+ {
+ size.y--;
+ }
+ else if (change == '+')
+ {
+ size.y++;
+ }
+ else if (change == '_')
+ {
+ size.x--;
+ }
+ else if (change == '*')
+ {
+ size.x++;
+ }
+ return resize_active_win (win_meta, size);
+ }
+ return 0;
+}
+
+
+
+extern struct yx_uint16 find_passable_pos(struct Map * map)
+{
+ struct yx_uint16 pos;
+ for (pos.y = pos.x = 0; 0 == is_passable(map, pos);)
+ {
+ pos.y = rrand() % map->size.y;
+ pos.x = rrand() % map->size.x;
+ }
+ return pos;
+}
+
+
+
+extern uint8_t meta_keys(int key, struct World * world,
+ struct WinMeta * win_meta, struct Win * win_keys,
+ struct Win * win_map, struct Win * win_info,
+ struct Win * win_log)
+{
+ char * err_toggle = "Trouble with toggle_window() in meta_keys().";
+ char * err_shift = "Trouble with shift_active_win() in meta_keys().";
+ char * err_resize = "Trouble with growshrink_active_window() in "
+ "meta_keys().";
+ if (key == get_action_key(world->keybindings, "quit"))
+ {
+ return 1;
+ }
+ else if (key == get_action_key(world->keybindings, "scroll pad right"))
+ {
+ scroll_pad (win_meta, '+');
+ }
+ else if (key == get_action_key(world->keybindings, "scroll pad left"))
+ {
+ scroll_pad (win_meta, '-');
+ }
+ else if (key == get_action_key(world->keybindings, "toggle keys window"))
+ {
+ exit_err(toggle_window(win_meta, win_keys), world, err_toggle);
+ }
+ else if (key == get_action_key(world->keybindings, "toggle map window"))
+ {
+ exit_err(toggle_window(win_meta, win_map), world, err_toggle);
+ }
+ else if (key == get_action_key(world->keybindings, "toggle info window"))
+ {
+ exit_err(toggle_window(win_meta, win_info), world, err_toggle);
+ }
+ else if (key == get_action_key(world->keybindings, "toggle log window"))
+ {
+ exit_err(toggle_window(win_meta, win_log), world, err_toggle);
+ }
+ else if (key == get_action_key(world->keybindings, "cycle forwards"))
+ {
+ cycle_active_win(win_meta, 'f');
+ }
+ else if (key == get_action_key(world->keybindings, "cycle backwards"))
+ {
+ cycle_active_win(win_meta, 'b');
+ }
+ else if (key == get_action_key(world->keybindings, "shift forwards"))
+ {
+ exit_err(shift_active_win(win_meta, 'f'), world, err_shift);
+ }
+ else if (key == get_action_key(world->keybindings, "shift backwards"))
+ {
+ exit_err(shift_active_win(win_meta, 'b'), world, err_shift);
+ }
+ else if (key == get_action_key(world->keybindings, "grow horizontally"))
+ {
+ exit_err(growshrink_active_window(win_meta, '*'), world, err_resize);
+ }
+ else if (key == get_action_key(world->keybindings, "shrink horizontally"))
+ {
+ exit_err(growshrink_active_window(win_meta, '_'), world, err_resize);
+ }
+ else if (key == get_action_key(world->keybindings, "grow vertically"))
+ {
+ exit_err(growshrink_active_window(win_meta, '+'), world, err_resize);
+ }
+ else if (key == get_action_key(world->keybindings, "shrink vertically"))
+ {
+ exit_err(growshrink_active_window(win_meta, '-'), world, err_resize);
+ }
+ else if (key == get_action_key(world->keybindings, "save keys"))
+ {
+ save_keybindings(world);
+ }
+ else if (key == get_action_key(world->keybindings, "keys nav up"))
+ {
+ keyswin_move_selection (world, 'u');
+ }
+ else if (key == get_action_key(world->keybindings, "keys nav down"))
+ {
+ keyswin_move_selection (world, 'd');
+ }
+ else if (key == get_action_key(world->keybindings, "keys mod"))
+ {
+ keyswin_mod_key (world, win_meta);
+ }
+ else if (key == get_action_key(world->keybindings, "map up"))
+ {
+ map_scroll (world->map, NORTH, win_map->frame.size);
+ }
+ else if (key == get_action_key(world->keybindings, "map down"))
+ {
+ map_scroll (world->map, SOUTH, win_map->frame.size);
+ }
+ else if (key == get_action_key(world->keybindings, "map right"))
+ {
+ map_scroll (world->map, EAST, win_map->frame.size);
+ }
+ else if (key == get_action_key(world->keybindings, "map left"))
+ {
+ map_scroll (world->map, WEST, win_map->frame.size);
+ }
+ else if (key == get_action_key(world->keybindings, "map center player"))
+ {
+ map_center_player (world->map, world->player, win_map->frame.size);
+ }
+ return 0;
+}
projects / plomrogue / blobdiff