new: black screen pause start option

Author: Holixus

main.c

@@ -71,26 +71,34 @@ void start(int argc, char *argv[])
 	static struct option const long_options[] = {
 	/*     name, has_arg, *flag, chr */
 		{ "nocolor", 0, 0, 'c' },
+		{ "bsp",     0, 0, 'b' },
 		{ "help",    0, 0, 'h' },
 		{ 0, 0, 0, 0 }
 	};
 
+	int to_options = 0; // like black screen pause
+
 	for (;;) {
 		int option_index;
-		switch (getopt_long(argc, argv, "?hc", long_options, &option_index)) {
+		switch (getopt_long(argc, argv, "?hcb", long_options, &option_index)) {
 		case -1:
 			goto _end_of_opts;
 
 		case 'c':
 			con_colors_enable(0);
 			break;
 
+		case 'b':
+			to_options |= TO_BLACK_SCREEN_PAUSE;
+			break;
+
 		case 'h':
 		case '?':
 			con_put(
 "Usage: %s <options>\n\n\
 options:\n\
   -c, --nocolor\t: disable ANSI colors;\n\
+  -b, --bsp\t: enable black screen pause;\n\
   -h\t\t: print this help and exit.\n\n", get_path_filename(argv[0]));
 			return;
 		}
@@ -104,6 +112,6 @@ options:\n\
 
 	io_atexit(free_all);
 
-	tetris_init(&ntet, 0, 0);
+	tetris_init(&ntet, 0, 0, to_options);
 	tetris_start(&ntet);
 }

tetris.c

@@ -31,7 +31,8 @@ static void tetris_pause(tetris_t *self)
 {
 	io_timer_set_timeout(self->timer, (self->paused = !self->paused) ? -1 : 1000);
 	if (self->paused) {
-		//con_cls();
+		if (self->options & TO_BLACK_SCREEN_PAUSE)
+			con_cls();
 	} else {
 		tetris_refresh(self);
 	}
@@ -67,7 +68,7 @@ static void tetris_key_handler(void *p, char const *seq, int code)
 
 
 /* -------------------------------------------------------------------------- */
-void tetris_init(tetris_t *self, int left, int top)
+void tetris_init(tetris_t *self, int left, int top, int options)
 {
 	score_init(&self->score, left + 5, top + 4);
 	board_init(&self->game, left + 27, top + 2, 10, 20, " .");
@@ -78,6 +79,7 @@ void tetris_init(tetris_t *self, int left, int top)
 	self->timer = NULL;
 	io_key_on(tetris_key_handler, self);
 	self->paused = 0;
+	self->options = options;
 }
 
 /* -------------------------------------------------------------------------- */

tetris.h

@@ -3,6 +3,8 @@
 
 enum { KEY_LEFT, KEY_RIGHT, KEY_UP, KEY_DOWN, KEY_DROP, KEY_PAUSE, KEY_QUIT };
 
+enum { TO_BLACK_SCREEN_PAUSE = 1 };
+
 typedef
 struct tetris {
 	board_t game;
@@ -14,9 +16,10 @@ struct tetris {
 	io_timer_t *timer;
 	int period; // timer period;
 	int paused;
+	int options;
 } tetris_t;
 
 
-void tetris_init(tetris_t *self, int left, int top);
+void tetris_init(tetris_t *self, int left, int top, int options);
 void tetris_free(tetris_t *self);
 void tetris_start(tetris_t *self);