-
-struct World {
- struct KeyBinding * keybindings;
- struct KeysWinData * keyswindata;
- int turn;
- char * log;
- struct Map * map;
- struct Monster * monster;
- struct Player * player; };
-
-struct KeyBinding {
- char * name;
- int key; };
-
-struct KeysWinData {
- int max;
- char edit;
- int select; };
-
-struct Map {
- int width;
- int height;
- int offset_x;
- int offset_y;
- char * cells; };
-
-struct Player {
- int y;
- int x; };
-
-struct Monster {
- int y;
- int x; };
-
-void draw_with_linebreaks (struct Win *, char *, int);
-void draw_text_from_bottom (struct Win *, char *);
-void draw_log (struct Win *);
-void draw_map (struct Win *);
-void draw_info (struct Win *);
-void draw_keys_window (struct Win *);
-void toggle_window (struct WinMeta *, struct Win *);
-void init_keybindings(struct World *);
-struct Map init_map ();
-void next_turn (struct World *);
-void update_log (struct World *, char *);
-void save_keybindings(struct World *);
-int get_action_key (struct KeyBinding *, char *);
-char * get_keyname(int);
-void mod_key (struct World *, struct WinMeta *);
-void keyswin_move_selection (struct World *, char);
-char is_passable (struct World *, int, int);
-void move_player (struct World *, char);
-void player_wait(struct World *);
-
-void draw_with_linebreaks (struct Win * win, char * text, int start_y) {
-// Write text into window content space. Start on row start_y. Fill unused rows with whitespace.
- int x, y;
- char toggle;
- char fin = 0;
- int z = -1;
- for (y = start_y; y < win->height; y++) {
- if (0 == fin)
- toggle = 0;
- for (x = 0; x < win->width; x++) {
- if (0 == toggle) {
- z++;
- if ('\n' == text[z]) {
- toggle = 1;
- continue; }
- else
- mvwaddch(win->curses, y, x, text[z]);
- if ('\n' == text[z+1]) {
- z++;
- toggle = 1; }
- else if (0 == text[z+1]) {
- toggle = 1;
- fin = 1; } } } } }
-
-void draw_text_from_bottom (struct Win * win, char * text) {
-// Draw text from end/bottom to the top.
- char toggle = 0;
- int x, y, offset;
- int z = -1;
- for (y = 0; 0 == toggle; y++) // Determine number of lines text would have in
- for (x = 0; x < win->width; x++) { // a window of available width, but infinite height.
- z++;
- if ('\n' == text[z]) // Treat \n and \0 as control characters for incrementing y and stopping
- break; // the loop. Make sure they don't count as cell space themselves.
- if ('\n' == text[z+1]) {
- z++;
- break; }
- else if (0 == text[z+1]) {
- toggle = 1;
- break; } }
- z = -1;
- int start_y = 0;
- if (y < win->height) // Depending on what is bigger, determine start point in window or in text.
- start_y = win->height - y;
- else if (y > win->height) {
- offset = y - win->height;
- for (y = 0; y < offset; y++)
- for (x = 0; x < win->width; x++) {
- z++;
- if ('\n' == text[z])
- break;
- if ('\n' == text[z+1]) {
- z++;
- break; } }
- text = text + (sizeof(char) * (z + 1)); }
- draw_with_linebreaks(win, text, start_y); }
-
-void draw_log (struct Win * win) {
-// Draw log text from world struct in win->data from bottom to top.
- struct World * world = (struct World *) win->data;
- draw_text_from_bottom(win, world->log); }
-
-void draw_map (struct Win * win) {
-// Draw map determined by win->data Map struct into window. Respect offset.
- struct World * world = (struct World *) win->data;
- struct Map * map = world->map;
- struct Player * player = world->player;
- struct Monster * monster = world->monster;
- char * cells = map->cells;
- int width_map_av = map->width - map->offset_x;
- int height_map_av = map->height - map->offset_y;
- int x, y, z;
- for (y = 0; y < win->height; y++) {
- z = map->offset_x + (map->offset_y + y) * (map->width);
- for (x = 0; x < win->width; x++) {
- if (y < height_map_av && x < width_map_av) {
- if (z == (map->width * player->y) + player->x)
- mvwaddch(win->curses, y, x, '@');
- else if (z == (map->width * monster->y) + monster->x)
- mvwaddch(win->curses, y, x, 'M');
- else
- mvwaddch(win->curses, y, x, cells[z]);
- z++; } } } }
-
-void draw_info (struct Win * win) {
-// Draw info window by appending win->data integer value to "Turn: " display.
- struct World * world = (struct World *) win->data;
- int count = world->turn;
- char text[100];
- snprintf(text, 100, "Turn: %d", count);
- draw_with_linebreaks(win, text, 0); }
-
-void draw_keys_window (struct Win * win) {
-// Draw keybinding window.
- struct World * world = (struct World *) win->data;
- struct KeysWinData * keyswindata = (struct KeysWinData *) world->keyswindata;
- struct KeyBinding * keybindings = world->keybindings;
- int offset = 0;
- if (keyswindata->max >= win->height) {
- if (keyswindata->select > win->height / 2) {
- if (keyswindata->select < (keyswindata->max - (win->height / 2)))
- offset = keyswindata->select - (win->height / 2);
- else
- offset = keyswindata->max - win->height + 1; } }
- int keydescwidth = 9 + 1; // max length assured by get_keyname() + \0
- char * keydesc = malloc(keydescwidth);
- attr_t attri;
- int y, x;
- char * keyname;
- for (y = 0; y <= keyswindata->max && y < win->height; y++) {
- attri = 0;
- if (y == keyswindata->select - offset) {
- attri = A_REVERSE;
- if (1 == keyswindata->edit)
- attri = attri | A_BLINK; }
- keyname = get_keyname(keybindings[y + offset].key);
- snprintf(keydesc, keydescwidth, "%-9s", keyname);
- free(keyname);
- for (x = 0; x < win->width; x++)
- if (x < strlen(keydesc))
- mvwaddch(win->curses, y, x, keydesc[x] | attri);
- else if (strlen(keydesc) < x && x < strlen(keybindings[y + offset].name) + strlen(keydesc) + 1)
- mvwaddch(win->curses, y, x, keybindings[y + offset].name[x - strlen(keydesc) - 1] | attri);
- else
- mvwaddch(win->curses, y, x, ' ' | attri); }
- free(keydesc); }
+#include "draw_wins.h"
+#include "roguelike.h"
+#include "keybindings.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).
+
+uint16_t read_uint16_bigendian(FILE * file) {
+// Read uint16 from file in big-endian order.
+ const uint16_t nchar = UCHAR_MAX + 1;
+ unsigned char a = fgetc(file);
+ unsigned char b = fgetc(file);
+ return (a * nchar) + b; }
+
+void write_uint16_bigendian(uint16_t x, FILE * file) {
+// Write uint16 to file in beg-endian order.
+ const uint16_t nchar = UCHAR_MAX + 1;
+ unsigned char a = x / nchar;
+ unsigned char b = x % nchar;
+ fputc(a, file);
+ fputc(b, file); }
+
+uint32_t read_uint32_bigendian(FILE * file) {
+// Read uint32 from file in big-endian order.
+ const uint16_t nchar = UCHAR_MAX + 1;
+ unsigned char a = fgetc(file);
+ unsigned char b = fgetc(file);
+ unsigned char c = fgetc(file);
+ unsigned char d = fgetc(file);
+ return (a * nchar * nchar * nchar) + (b * nchar * nchar) + (c * nchar) + d; }
+
+void write_uint32_bigendian(uint32_t x, FILE * file) {
+// Write uint32 to file in beg-endian order.
+ const uint16_t nchar = UCHAR_MAX + 1;
+ unsigned char a = x / (nchar * nchar * nchar);
+ unsigned char b = (x - (a * nchar * nchar * nchar)) / (nchar * nchar);
+ unsigned char c = (x - ((a * nchar * nchar * nchar) + (b * nchar * nchar))) / nchar;
+ unsigned char d = x % nchar;
+ fputc(a, file);
+ fputc(b, file);
+ fputc(c, file);
+ fputc(d, file); }
+
+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->y, file);
+ write_uint16_bigendian(world->player->x, file);
+ write_uint16_bigendian(world->monster->y, file);
+ write_uint16_bigendian(world->monster->x, file);
+ fclose(file); }