/*
* Curses UI for slide puzzle game
* Copyright © 2022 Nick Bowler
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
#include
#include
#include
#include
#include
#include
#include "help.h"
#include "version.h"
#include "cursesopt.h"
#include "game.h"
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
static const char *progname = "rrace";
static const struct option lopts[] = { LOPTS_INITIALIZER, {0} };
enum {
WINDOW_TILEBORDER,
WINDOW_TILEFILL,
WINDOW_AREA,
WINDOW_MAX,
};
static struct app_state {
struct board board;
WINDOW *gamewin[WINDOW_MAX], *goalwin[WINDOW_MAX];
int cursor;
} state;
static void print_version(void)
{
version_print_head("rrace-curses", stdout);
puts("License GPLv3+: GNU GPL version 3 or any later version");
puts("This is free software: you are free to change and redistribute it.");
puts("There is NO WARRANTY, to the extent permitted by law.");
}
static void print_usage(FILE *f)
{
fprintf(f, "Usage: %s [options]\n", progname);
if (f != stdout)
fprintf(f, "Try %s --help for more information.\n", progname);
}
static void print_help(void)
{
struct lopt_help help = {0};
const struct option *opt;
print_usage(stdout);
putchar('\n');
puts("Options:");
for (opt = lopts; opt->name; opt++) {
if (!lopt_get_help(opt, &help))
continue;
help_print_option(opt, help.arg, help.desc, 20);
}
putchar('\n');
printf("Report bugs to <%s>.\n", PACKAGE_BUGREPORT);
}
static void draw_tile(WINDOW **win, unsigned colour, unsigned selected,
unsigned x, unsigned y, unsigned start_column)
{
WINDOW *border = win[WINDOW_TILEBORDER], *fill = win[WINDOW_TILEFILL];
int w, h, attr, ch, bc = selected ? '#' : 0;
assert(colour < TILE_MAX);
attr = COLOR_PAIR(colour);
switch (colour) {
case TILE_RED: ch = 'X'; break;
case TILE_ORANGE: ch = '|'; break;
case TILE_GREEN: ch = '+'; break;
case TILE_YELLOW: ch = '~'; attr |= A_BOLD; break;
case TILE_BLUE: ch = 'o'; attr |= A_BOLD; break;
case TILE_WHITE: ch = '.'; attr |= A_BOLD; break;
case TILE_EMPTY: attr = A_BOLD|COLOR_PAIR(TILE_MAX);
}
getmaxyx(border, h, w);
w = 2*(w+1)/2;
if (mvwin(border, 2+h*y, start_column+w*x) == ERR)
return;
if (colour != TILE_EMPTY) {
mvderwin(fill, 1, 1);
wbkgdset(fill, A_REVERSE|attr|ch);
werase(fill);
} else {
werase(border);
}
if (bc || colour) {
wattrset(border, attr);
wborder(border, bc, bc, bc, bc, bc, bc, bc, bc);
}
wnoutrefresh(border);
}
static int
redraw_tile(WINDOW **win, unsigned x, unsigned y, unsigned start_column,
uint_fast32_t bit0, uint_fast32_t bit1, uint_fast32_t bit2,
unsigned selected)
{
uint_fast32_t pos = board_position(x, y);
unsigned char tile = 0;
if (bit0 & pos) tile |= 1;
if (bit1 & pos) tile |= 2;
if (bit2 & pos) tile |= 4;
assert(tile < TILE_MAX);
draw_tile(win, tile, selected, x, y, start_column);
return tile;
}
static void redraw_area_border(WINDOW **win, unsigned x, unsigned sz)
{
int w, h, tr = 0, rs = 0, br = 0, bs = 0, bl = 0;
WINDOW *area = win[WINDOW_AREA];
getmaxyx(stdscr, h, w);
if (h <= 2) {
bl = ACS_ULCORNER, br = ACS_URCORNER;
} else if (h <= 3*sz+2) {
bl = br = ACS_VLINE, bs = ' ';
}
if (w <= x+1) {
tr = ACS_ULCORNER, br = ACS_LLCORNER;
} else if (w <= 6*sz+x+2) {
tr = ACS_HLINE, rs = ' ';
br = br ? ' ' : ACS_HLINE;
}
wborder(area, 0, rs, 0, bs, 0, tr, bl, br);
wnoutrefresh(area);
}
static void curs_redraw_game(struct app_state *state, uint_fast32_t mask)
{
uint_least32_t *gp = state->board.game;
int i;
if (mask == -1)
redraw_area_border(state->gamewin, 2, 5);
for (i = 0; i < 25; i++) {
if (mask & 1) {
redraw_tile(state->gamewin, i%5, i/5,
4, gp[0], gp[1], gp[2],
i == state->cursor);
}
mask >>= 1;
}
}
static void curs_redraw_goal(struct app_state *state, uint_fast32_t mask)
{
uint_least16_t *gp = state->board.goal;
int i, x, y;
if (!state->goalwin[WINDOW_AREA])
return;
getbegyx(state->goalwin[WINDOW_AREA], y, x);
if (mask == -1)
redraw_area_border(state->goalwin, x, 3);
for (i = 0; i < 9; i++) {
if (mask & 1) {
redraw_tile(state->goalwin, i%3, i/3,
x+2, gp[0], gp[1], gp[2], 0);
}
mask >>= 1;
}
}
static WINDOW *realloc_area(WINDOW **orig, int h, int w, int y, int x)
{
WINDOW *win = *orig;
if (win) {
#if HAVE_CURSES_WRESIZE
if (wresize(win, h, w) != ERR) {
mvwin(win, y, x);
return win;
}
#endif
delwin(win);
}
if (w > 0 && h > 0)
return *orig = subwin(stdscr, h, w, y, x);
return *orig = NULL;
}
static void realloc_tiles(WINDOW **win, int h)
{
WINDOW *border = win[WINDOW_TILEBORDER], *fill = win[WINDOW_TILEFILL];
int w = 2*h - 1;
if (fill && border) {
int old_w, old_h;
#if HAVE_CURSES_WRESIZE
if (wresize(fill, h-2, w-2) != ERR
&& wresize(border, h, w) != ERR)
{
return;
}
#endif
getmaxyx(border, old_h, old_w);
if (old_h == h)
return;
}
if (fill)
delwin(fill);
if (border)
delwin(border);
win[WINDOW_TILEBORDER] = border = newwin(h, w, 0, 0);
win[WINDOW_TILEFILL] = derwin(border, h-2, w-2, 1, 1);
}
static void setup_mainwin(struct app_state *state)
{
int w, h, gamesz, goalsz, scr_w, scr_h, split;
getmaxyx(stdscr, scr_h, scr_w);
/* First try to fit the game tiles based on window height. */
gamesz = MAX(3, (scr_h - 4) / 5);
/* Adjust downward until we can fit smallest possible goal area. */
for (; split = 5+10*gamesz, gamesz > 3; gamesz--) {
if (split + 20 < scr_w)
break;
}
/* Pick a goal size that will fit in the remaining area */
goalsz = MAX(3, (scr_w - split - 4) / 6);
if (goalsz >= gamesz)
goalsz = MAX(3, gamesz - 1);
realloc_tiles(state->gamewin, gamesz);
realloc_tiles(state->goalwin, goalsz);
/* Frame for game area */
w = MIN(scr_w-2, 3+10*gamesz);
h = MIN(scr_h-1, 2+5*gamesz);
realloc_area(&state->gamewin[WINDOW_AREA], h, w, 1, 2);
/* Frame for goal area */
w = MIN(scr_w-split, 3+6*goalsz);
h = MIN(scr_h-1, 2+3*goalsz);
realloc_area(&state->goalwin[WINDOW_AREA], h, w, 1, split);
}
static void app_initialize(int argc, char **argv)
{
int enable_mouse = 1;
int opt;
if (argc > 0)
progname = argv[0];
while ((opt = getopt_long(argc, argv, SOPT_STRING, lopts, 0)) != -1) {
switch (opt) {
case LOPT_MOUSE:
enable_mouse = 2;
break;
case LOPT_NO_MOUSE:
enable_mouse = 0;
break;
case LOPT_VERSION:
print_version();
exit(EXIT_SUCCESS);
case LOPT_HELP:
print_help();
exit(EXIT_SUCCESS);
default:
print_usage(stderr);
exit(EXIT_FAILURE);
}
}
game_reset(&state.board);
state.cursor = 5*state.board.y + state.board.x;
initscr();
start_color();
curs_set(0);
cbreak();
keypad(stdscr, TRUE);
if (enable_mouse) {
#if HAVE_CURSES_MOUSE_SET
mouse_set(BUTTON1_PRESSED);
#elif HAVE_CURSES_MOUSEMASK
mousemask(BUTTON1_PRESSED, NULL);
#endif
#if HAVE_CURSES_MOUSEINTERVAL
mouseinterval(0);
#endif
}
noecho();
init_pair(TILE_RED, COLOR_RED, COLOR_BLACK);
init_pair(TILE_ORANGE, COLOR_YELLOW, COLOR_BLACK);
init_pair(TILE_YELLOW, COLOR_YELLOW, COLOR_BLACK);
init_pair(TILE_GREEN, COLOR_GREEN, COLOR_BLACK);
init_pair(TILE_BLUE, COLOR_BLUE, COLOR_BLACK);
init_pair(TILE_WHITE, COLOR_WHITE, COLOR_BLACK);
init_pair(TILE_MAX, COLOR_BLACK, COLOR_BLACK);
setup_mainwin(&state);
refresh();
}
static uint_fast32_t do_move(struct app_state *state, int x, int y)
{
uint_fast32_t mask;
if ((mask = game_do_move(&state->board, x, y)) != 0) {
curs_redraw_game(state, mask);
refresh();
}
return mask;
}
#if HAVE_CURSES_MOUSE_SUPPORT
static void do_mouse(struct app_state *state)
{
unsigned long bstate;
int x, y;
#if HAVE_CURSES_GETMOUSE_NCURSES
MEVENT mev;
if (getmouse(&mev) == ERR)
return;
x = mev.x, y = mev.y;
bstate = mev.bstate;
#elif HAVE_CURSES_REQUEST_MOUSE_POS
request_mouse_pos();
x = MOUSE_X_POS;
y = MOUSE_Y_POS;
bstate = 0;
if (BUTTON_CHANGED(1)) {
switch (BUTTON_STATUS(1)) {
case BUTTON_RELEASED: bstate |= BUTTON1_RELEASED;
case BUTTON_PRESSED: bstate |= BUTTON1_PRESSED;
}
}
#endif
if (bstate == BUTTON1_PRESSED) {
uint_fast32_t cursor_mask, move_mask;
int w, h;
/* Determine size of the game area */
getmaxyx(state->gamewin[WINDOW_TILEBORDER], h, w);
w = 2*(w+1)/2;
if (x < 4 || (x -= 4)/5 >= w) return;
if (y < 2 || (y -= 2)/5 >= h) return;
/* Turn off the keyboard cursor when using the mouse */
cursor_mask = state->cursor < 0 ? -1 : 1ul << state->cursor;
state->cursor = -1;
move_mask = do_move(state, x/w, y/h);
if ((cursor_mask & move_mask) == 0) {
curs_redraw_game(state, cursor_mask);
refresh();
}
}
}
#endif
static void do_move_cursor(struct app_state *state, int c)
{
uint_fast32_t mask = 1ul << state->cursor;
if (state->cursor < 0) {
/* Reset keyboard cursor to the empty position */
state->cursor = 5*state->board.y + state->board.x;
}
switch (c) {
case KEY_UP:
if ((state->cursor -= 5) < 0)
state->cursor += 25;
break;
case KEY_DOWN:
if ((state->cursor += 5) >= 25)
state->cursor -= 25;
break;
case KEY_LEFT:
if ((state->cursor -= 1) % 5 == 4 || state->cursor < 0)
state->cursor += 5;
break;
case KEY_RIGHT:
if ((state->cursor += 1) % 5 == 0)
state->cursor -= 5;
break;
}
curs_redraw_game(state, mask | 1ul << state->cursor);
refresh();
}
static void do_keystroke(struct app_state *state, int c)
{
switch (c) {
case KEY_DOWN: case KEY_UP: case KEY_LEFT: case KEY_RIGHT:
do_move_cursor(state, c);
break;
case ' ':
if (state->cursor >= 0)
do_move(state, state->cursor%5, state->cursor/5);
break;
}
}
int main(int argc, char **argv)
{
setlocale(LC_ALL, "");
app_initialize(argc, argv);
curs_redraw_game(&state, -1);
curs_redraw_goal(&state, -1);
refresh();
while (1) {
int c = getch();
switch (c) {
#ifdef KEY_RESIZE
case KEY_RESIZE:
setup_mainwin(&state);
clear();
refresh();
curs_redraw_game(&state, -1);
curs_redraw_goal(&state, -1);
refresh();
break;
#endif
#if HAVE_CURSES_MOUSE_SUPPORT
case KEY_MOUSE:
do_mouse(&state);
break;
#endif
default:
do_keystroke(&state, c);
}
}
}