#include <stdlib.h>
#include "windows.h"
+struct World {
+ struct KeyBinding * keybindings;
+ struct KeysWinData * keyswindata;
+ int turn;
+ char * log;
+ struct Map * map;
+ 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;
- int player_x;
- int player_y;
char * cells; };
+struct Player {
+ 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 update_info (struct World *);
+void update_log (struct World *, char *);
+void save_keybindings(struct World *);
+int get_action_key (struct KeyBinding *, char *);
+char * get_keyname(int);
+char is_passable (struct World *, int, int);
+void move_player (struct World *, char);
+
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;
- int height_av = win->height - 1;
- int width_av = win->width - 1;
char fin = 0;
int z = -1;
- for (y = start_y; y < height_av; y++) {
+ for (y = start_y; y < win->height; y++) {
if (0 == fin)
toggle = 0;
- for (x = 0; x < width_av; x++) {
+ for (x = 0; x < win->width; x++) {
if (0 == toggle) {
z++;
if ('\n' == text[z]) {
- mvwaddch(win->curses_win, y+1, x+win->border_left, ' ');
toggle = 1;
continue; }
else
- mvwaddch(win->curses_win, y+1, x+win->border_left, text[z]);
+ 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; } }
- else
- mvwaddch(win->curses_win, y+1, x+win->border_left, ' '); } } }
-
-void draw_text_from_bottom (struct Win * win) {
-// Draw text in win->data from end/bottom to the top.
- char * text = (char *) win->data;
- int width_av = win->width - 1;
- int height_av = win->height - 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 a window of available
- for (x = 0; x < width_av; x++) { // width, but infinite height.
+ 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
- break; // stopping the loop. Make sure they don't count as cell space
- if ('\n' == text[z+1]) { // themselves.
+ 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]) {
break; } }
z = -1;
int start_y = 0;
- if (y < height_av) { // Depending on what is bigger, determine start point in window or in text.
- start_y = height_av - y;
- for (y = 0; y < start_y; y++)
- for (x = 0; x < width_av; x++)
- mvwaddch(win->curses_win, y+1, x+win->border_left, ' '); }
- else if (y > height_av) {
- offset = y - height_av;
+ 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 < width_av; x++) {
+ for (x = 0; x < win->width; x++) {
z++;
if ('\n' == text[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.
- int height_av = win->height - 1;
- int width_av = win->width - 1;
- struct Map map = * (struct Map *) win->data;
- char * cells = map.cells;
- int width_map_av = map.width - map.offset_x;
- int height_map_av = map.height - map.offset_y;
+ struct World * world = (struct World *) win->data;
+ struct Map * map = world->map;
+ struct Player * player = world->player;
+ 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 < height_av; y++) {
- z = map.offset_x + (map.offset_y + y) * (map.width);
- for (x = 0; x < width_av; x++) {
+ 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 * map.player_y) + map.player_x)
- mvwaddch(win->curses_win, y+1, x+win->border_left, '@');
+ if (z == (map->width * player->y) + player->x)
+ mvwaddch(win->curses, y, x, '@');
else
- mvwaddch(win->curses_win, y+1, x+win->border_left, cells[z]);
- z++; }
- else
- mvwaddch(win->curses_win, y+1, x+win->border_left, ' '); } } }
+ 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.
- int count = * (int *) win->data;
+ 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); }
+
void toggle_window (struct WinMeta * win_meta, struct Win * win) {
// Toggle display of window win.
- if (0 != win->curses_win)
+ if (0 != win->curses)
suspend_window(win_meta, win);
else
append_window(win_meta, win); }
+void init_keybindings(struct World * world) {
+// Initialize keybindings from file "keybindings".
+ FILE * file = fopen("keybindings", "r");
+ int lines = 0;
+ int c = 0;
+ int linemax = 0;
+ int 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;
+ lines++; } }
+ struct KeyBinding * keybindings = malloc(lines * sizeof(struct KeyBinding));
+ fseek(file, 0, SEEK_SET);
+ char * command = malloc(linemax);
+ int commcount = 0;
+ char * cmdptr;
+ while (fgets(command, linemax, file)) {
+ keybindings[commcount].key = atoi(command);
+ cmdptr = strchr(command, ' ') + 1;
+ keybindings[commcount].name = malloc(strlen(cmdptr));
+ memcpy(keybindings[commcount].name, cmdptr, strlen(cmdptr) - 1);
+ keybindings[commcount].name[strlen(cmdptr) - 1] = '\0';
+ commcount++; }
+ free(command);
+ fclose(file);
+ struct KeysWinData * keyswindata = malloc(sizeof(struct KeysWinData));
+ keyswindata->max = lines - 1;
+ keyswindata->select = 0;
+ keyswindata->edit = 0;
+ world->keybindings = keybindings;
+ world->keyswindata = keyswindata; }
+
struct Map init_map () {
// Initialize map with some experimental start values.
struct Map map;
map.height = 128;
map.offset_x = 0;
map.offset_y = 0;
- map.player_x = 2;
- map.player_y = 2;
map.cells = malloc(map.width * map.height);
int x, y;
for (y = 0; y < map.height; y++)
map.cells[(8 * map.width) + 3] = 'X';
return map; }
-void update_info (struct Win * win) {
+void update_info (struct World * world) {
// Update info data by incrementing turn value.
- * (int *) win->data = * (int *) win->data + 1; }
+ world->turn++; }
-void update_log (struct Win * win, char * text) {
+void update_log (struct World * world, char * text) {
// Update log with new text to be appended.
char * new_text;
- int len_old = strlen(win->data);
+ int len_old = strlen(world->log);
int len_new = strlen(text);
int len_whole = len_old + len_new + 1;
new_text = calloc(len_whole, sizeof(char));
- memcpy(new_text, win->data, len_old);
+ memcpy(new_text, world->log, len_old);
memcpy(new_text + len_old, text, len_new);
- free(win->data);
- win->data = new_text; }
+ free(world->log);
+ world->log = new_text; }
+
+void save_keybindings(struct World * world) {
+// Write keybindings to keybindings file.
+ struct KeysWinData * keyswindata = (struct KeysWinData *) world->keyswindata;
+ struct KeyBinding * keybindings = world->keybindings;
+ FILE * file = fopen("keybindings", "w");
+ int linemax = 0;
+ int i;
+ for (i = 0; i <= keyswindata->max; i++)
+ if (strlen(keybindings[i].name) > linemax)
+ linemax = strlen(keybindings[i].name);
+ linemax = linemax + 6; // + 6 = + 3 digits + whitespace + newline + null byte
+ char * line = malloc(linemax);
+ for (i = 0; i <= keyswindata->max; i++) {
+ snprintf(line, linemax, "%d %s\n", keybindings[i].key, keybindings[i].name);
+ fwrite(line, sizeof(char), strlen(line), file); }
+ free(line);
+ fclose(file); }
+
+int get_action_key (struct KeyBinding * keybindings, char * name) {
+// Return key matching name in keybindings.
+ int i = 0;
+ while (strcmp(keybindings[i].name, name) )
+ i++;
+ return keybindings[i].key; }
+
+char * get_keyname(int keycode) {
+// Translate some keycodes to readable names of max 9 chars.
+ char * keyname;
+ keyname = malloc(15);
+ if (32 < keycode && keycode < 127)
+ sprintf(keyname, "%c", keycode);
+ else if (keycode == 9)
+ sprintf(keyname, "TAB");
+ else if (keycode == 10)
+ sprintf(keyname, "RETURN");
+ else if (keycode == 27)
+ sprintf(keyname, "ESCAPE");
+ else if (keycode == 32)
+ sprintf(keyname, "SPACE");
+ else if (keycode == KEY_UP)
+ sprintf(keyname, "UP");
+ else if (keycode == KEY_DOWN)
+ sprintf(keyname, "DOWN");
+ else if (keycode == KEY_LEFT)
+ sprintf(keyname, "LEFT");
+ else if (keycode == KEY_RIGHT)
+ sprintf(keyname, "RIGHT");
+ else if (keycode == KEY_HOME)
+ sprintf(keyname, "HOME");
+ else if (keycode == KEY_BACKSPACE)
+ sprintf(keyname, "BACKSPACE");
+ else if (keycode >= KEY_F0 && keycode <= KEY_F(63)) {
+ int f = keycode - KEY_F0;
+ sprintf(keyname, "F%d", f); }
+ else if (keycode == KEY_DC)
+ sprintf(keyname, "DELETE");
+ else if (keycode == KEY_IC)
+ sprintf(keyname, "INSERT");
+ else if (keycode == KEY_NPAGE)
+ sprintf(keyname, "NEXT PAGE");
+ else if (keycode == KEY_PPAGE)
+ sprintf(keyname, "PREV PAGE");
+ else if (keycode == KEY_END)
+ sprintf(keyname, "END");
+ else
+ sprintf(keyname, "(unknown)");
+ return keyname; }
+
+char is_passable (struct World * world, int y, int x) {
+// Check if coordinate on (or beyond) map is accessible to movement.
+ char passable = 0;
+ if (0 <= x && x < world->map->width && 0 <= y && y < world->map->height)
+ if ('.' == world->map->cells[y * world->map->width + x])
+ passable = 1;
+ return passable; }
+
+void move_player (struct World * world, char d) {
+// Move player in direction d, increment turn counter and update log.
+ static char prev = 0;
+ char success = 0;
+ char * dir;
+ if ('s' == d) {
+ dir = "south";
+ if (is_passable(world, world->player->x, world->player->y + 1)) {
+ world->player->y++;
+ success = 1; } }
+ else if ('n' == d) {
+ dir = "north";
+ if (is_passable(world, world->player->x, world->player->y - 1)) {
+ world->player->y--;
+ success = 1; } }
+ else if ('w' == d) {
+ dir = "west";
+ if (is_passable(world, world->player->x - 1, world->player->y)) {
+ world->player->x--;
+ success = 1; } }
+ else if ('e' == d) {
+ dir = "east";
+ if (is_passable(world, world->player->x + 1, world->player->y)) {
+ world->player->x++;
+ success = 1; } }
+ if (success * d == prev)
+ update_log (world, ".");
+ else {
+ char * msg = calloc(25, sizeof(char));
+ char * msg_content = "You fail to move";
+ if (success)
+ msg_content = "You move";
+ sprintf(msg, "\n%s %s.", msg_content, dir);
+ update_log (world, msg);
+ free(msg); }
+ prev = success * d;
+ update_info (world); }
int main () {
+ struct World world;
+ init_keybindings(&world);
+ world.turn = 0;
+ world.log = calloc(1, sizeof(char));
+ update_log (&world, "Start!");
+ struct Map map = init_map();
+ world.map = ↦
+ struct Player player;
+ player.y = 2;
+ player.x = 2;
+ world.player = &player;
+
WINDOW * screen = initscr();
noecho();
curs_set(0);
+ keypad(screen, TRUE);
+ raw();
struct WinMeta win_meta = init_win_meta(screen);
+ struct Win win_keys = init_window(&win_meta, "Keys");
+ win_keys.draw = draw_keys_window;
+ win_keys.data = &world;
struct Win win_map = init_window(&win_meta, "Map");
win_map.draw = draw_map;
- struct Map map = init_map();
- win_map.data = ↦
-
+ win_map.data = &world;
struct Win win_info = init_window(&win_meta, "Info");
win_info.draw = draw_info;
- win_info.data = malloc(sizeof(int));
- * (int *) win_info.data = 0;
-
+ win_info.data = &world;
struct Win win_log = init_window(&win_meta, "Log");
- win_log.draw = draw_text_from_bottom;
- win_log.data = calloc(1, sizeof(char));
- update_log (&win_log, "Start!");
+ win_log.draw = draw_log;
+ win_log.data = &world;
- char key;
+ int key;
while (1) {
+ draw_all_windows (&win_meta);
key = getch();
- if (key == 'Q') // quit
+ if (key == get_action_key(world.keybindings, "quit"))
break;
- else if (key == '1') // toggle map window
+ else if (key == get_action_key(world.keybindings, "scroll pad right"))
+ win_meta.pad_offset++;
+ else if (key == get_action_key(world.keybindings, "scroll pad left") && win_meta.pad_offset > 0)
+ win_meta.pad_offset--;
+ 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 == '2') // toggle info window
+ else if (key == get_action_key(world.keybindings, "toggle info window"))
toggle_window(&win_meta, &win_info);
- else if (key == '3') // toggle log window
+ else if (key == get_action_key(world.keybindings, "toggle log window"))
toggle_window(&win_meta, &win_log);
- else if (key == 'x') { // scroll map down
- map.offset_y++;
- draw_all_windows (&win_meta); }
- else if (key == 'w' && map.offset_y > 0) { // scroll map up
- map.offset_y--;
- draw_all_windows (&win_meta); }
- else if (key == 'd') { // scroll map right
- map.offset_x++;
- draw_all_windows (&win_meta); }
- else if (key == 'a' && map.offset_x > 0) { // scroll map left
- map.offset_x--;
- draw_all_windows (&win_meta); }
- else if (key == 'b' && map.player_y < map.height - 1) { // move player south
- update_info (&win_info);
- update_log (&win_log, "\nYou move south.");
- map.player_y++;
- draw_all_windows (&win_meta); }
- else if (key == 't' && map.player_y > 0) { // move player north
- update_info (&win_info);
- update_log (&win_log, "\nYou move north.");
- map.player_y--;
- draw_all_windows (&win_meta); }
- else if (key == 'h' && map.player_x < map.width - 1) { // move player east
- update_info (&win_info);
- update_log (&win_log, "\nYou move east.");
- map.player_x++;
- draw_all_windows (&win_meta); }
- else if (key == 'f' && map.player_x > 0) { // move player west
- update_info (&win_info);
- update_log (&win_log, "\nYou move west.");
- map.player_x--;
- draw_all_windows (&win_meta); }
- else if (key == '.') { // wait
- update_info (&win_info);
- update_log (&win_log, "\nYou wait.");
- draw_all_windows(&win_meta); }
- else if (key == '>' && win_meta.active != 0) // cycle forwards
+ else if (key == get_action_key(world.keybindings, "cycle forwards") && win_meta.active != 0)
cycle_active_window(&win_meta, 'n');
- else if (key == '<' && win_meta.active != 0) // cycle backwards
+ else if (key == get_action_key(world.keybindings, "cycle backwards") && win_meta.active != 0)
cycle_active_window(&win_meta, 'p');
- else if (key == 'y' && win_meta.active != 0) // shift window forwards
+ else if (key == get_action_key(world.keybindings, "shift forwards") && win_meta.active != 0)
shift_window(&win_meta, 'f');
- else if (key == 'Y' && win_meta.active != 0) // shift window backwards
+ else if (key == get_action_key(world.keybindings, "shift backwards") && win_meta.active != 0)
shift_window(&win_meta, 'b');
- else if (key == '*' && win_meta.active != 0) // grow window horizontally
+ else if (key == get_action_key(world.keybindings, "grow horizontally") && win_meta.active != 0)
resize_window(&win_meta, '*');
- else if (key == '_' && win_meta.active != 0) // shrink window horizontally
+ else if (key == get_action_key(world.keybindings, "shrink horizontally") && win_meta.active != 0)
resize_window(&win_meta, '_');
- else if (key == '+' && win_meta.active != 0) // grow window vertically
+ else if (key == get_action_key(world.keybindings, "grow vertically") && win_meta.active != 0)
resize_window(&win_meta, '+');
- else if (key == '-' && win_meta.active != 0) // shrink window vertically
- resize_window(&win_meta, '-'); }
+ else if (key == get_action_key(world.keybindings, "shrink vertically") && win_meta.active != 0)
+ resize_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") && world.keyswindata->select > 0)
+ world.keyswindata->select--;
+ else if (key == get_action_key(world.keybindings, "keys nav down") && world.keyswindata->select < world.keyswindata->max)
+ world.keyswindata->select++;
+ else if (key == get_action_key(world.keybindings, "keys mod")) {
+ world.keyswindata->edit = 1;
+ draw_all_windows (&win_meta);
+ key = getch();
+ if (key < 1000) // ensure maximum of three digits in key code field
+ world.keybindings[world.keyswindata->select].key = key;
+ world.keyswindata->edit = 0; }
+ else if (key == get_action_key(world.keybindings, "map up") && map.offset_y > 0)
+ map.offset_y--;
+ else if (key == get_action_key(world.keybindings, "map down"))
+ map.offset_y++;
+ else if (key == get_action_key(world.keybindings, "map right"))
+ map.offset_x++;
+ else if (key == get_action_key(world.keybindings, "map left") && map.offset_x > 0)
+ map.offset_x--;
+ else if (key == get_action_key(world.keybindings, "player down"))
+ move_player(&world, 's');
+ else if (key == get_action_key(world.keybindings, "player up"))
+ move_player(&world, 'n');
+ else if (key == get_action_key(world.keybindings, "player right"))
+ move_player(&world, 'e');
+ else if (key == get_action_key(world.keybindings, "player left"))
+ move_player(&world, 'w');
+ else if (key == get_action_key(world.keybindings, "wait") ) {
+ update_info (&world);
+ update_log (&world, "\nYou wait."); } }
+
+ free(map.cells);
+ for (key = 0; key <= world.keyswindata->max; key++)
+ free(world.keybindings[key].name);
+ free(world.keybindings);
+ free(world.keyswindata);
+ free(world.log);
endwin();
return 0; }