Store combinations on face close

README.md

@@ -17,7 +17,6 @@ Since the original watchface is **NOT** open source, this "port" could be more a
     - The original [Maan On My Wrist](https://apps.rebble.io/en_US/application/557724772d93bc0eae00004c?native=false&query=maan&section=watchfaces) is still perfectly silly on b&w screens!
 
 # Considerations For The Future
-- Restore last combo after using an app
 - Add more Maan art (see [this gallery](https://www.flickr.com/photos/53297919@N04/albums/72157624708812279) for potential candidates)
 - Potential light mode (don't hold your breath - I'm still not sure this would look good and I don't like the idea of having settings)
 - Black&white support if I get bored or Pebble releases a modern b&w watch (Flint doesn't count)

src/c/main.c

@@ -119,6 +119,10 @@ static const GColor8 s_dark_bg_colors[] = {
     GColorBrilliantRose, GColorMelon, GColorShockingPink,
     // Brown
     GColorRoseVale};
+#define storage_key_head 0
+#define storage_key_butt 1
+#define storage_key_color 2
+static uint8_t s_head_index, s_butt_index;
 
 static void destroy_animation_handler(Animation *animation, bool finished, void *context) {
 	animation_destroy(animation);
@@ -207,7 +211,8 @@ static void schedule_guy_animation(Animation *raise_tmpl, Animation *out_tmpl, A
 static void update_minute_30_out_handler(Animation *animation, bool finished, void *context) {
 	// destroy and reassign
 	gbitmap_destroy(s_butt);
-	s_butt = gbitmap_create_with_resource(s_random_butts[rand() % s_butt_count]);
+	s_butt_index = rand() % s_butt_count;
+	s_butt = gbitmap_create_with_resource(s_random_butts[s_butt_index]);
 
 	// swap colors
 	replace_gbitmap_color(GColorGreen, s_random_color_next, s_butt, NULL);
@@ -228,7 +233,8 @@ static void update_minute_30() {
 static void update_minute_60_out_handler(Animation *animation, bool finished, void *context) {
 	// destroy and reassign
 	gbitmap_destroy(s_head);
-	s_head = gbitmap_create_with_resource(s_random_heads[rand() % s_head_count]);
+	s_head_index = rand() % s_head_count;
+	s_head = gbitmap_create_with_resource(s_random_heads[s_head_index]);
 
 	// swap colors
 	replace_gbitmap_color(GColorGreen, s_random_color_next, s_head, NULL);
@@ -379,15 +385,22 @@ static void init() {
 	window_set_background_color(s_main_window, GColorBlack);
 
 	// load initial batch of silly guy parts into memory
-	s_head = gbitmap_create_with_resource(s_random_heads[rand() % s_head_count]);
+	if (persist_exists(storage_key_color)) {
-	s_butt = gbitmap_create_with_resource(s_random_butts[rand() % s_butt_count]);
+		s_head_index = persist_read_int(storage_key_head);
-
+		s_butt_index = persist_read_int(storage_key_butt);
-	// pick starting colors
+		s_random_color_current = (GColor8){.argb = persist_read_int(storage_key_color)};
+	} else {
+		s_head_index = rand() % s_head_count;
+		s_butt_index = rand() % s_butt_count;
 		s_random_color_current = s_dark_bg_colors[rand() % s_color_count];
+	}
+	s_head = gbitmap_create_with_resource(s_random_heads[s_head_index]);
+	s_butt = gbitmap_create_with_resource(s_random_butts[s_butt_index]);
+
+	// set starting colors
+	s_random_color_next = s_dark_bg_colors[rand() % s_color_count];
 	replace_gbitmap_color(GColorGreen, s_random_color_current, s_head, NULL);
 	replace_gbitmap_color(GColorGreen, s_random_color_current, s_butt, NULL);
-	// don't overwrite current color, as it will need to be replaced
-	s_random_color_next = s_dark_bg_colors[rand() % s_color_count];
 
 // load custom font
 #if PBL_DISPLAY_WIDTH <= 180
@@ -489,6 +502,11 @@ static void deinit() {
 	gbitmap_destroy(s_bt0_icon);
 	gbitmap_destroy(s_bt1_icon);
 
+	// write to persistent storage
+	persist_write_int(storage_key_head, s_head_index);
+	persist_write_int(storage_key_butt, s_butt_index);
+	persist_write_int(storage_key_color, s_random_color_current.argb);
+
 	// destroy window
 	window_destroy(s_main_window);
 }