Added code for start screen scene, using the custom StartScreen view.

Added enumeration for start screen event.
Added custom input, draw callbacks
Added on_enter/event/exit code that handles switching to the view and
next appropriate scene

scenes/start_screen_scene.c

@@ -1,9 +1,57 @@
 #include "../minesweeper.h"
 #include "../views/start_screen.h"
 
+typedef enum {
+    MineSweeperSceneStartScreenContinueEvent,
+} MineSweeperSceneStartScreenEvent;
+
+//void minesweeper_scene_start_screen_timer_callback(void* context) {
+//    furi_assert(context);
+//    UNUSED(context);
+//}
+
+bool minesweeper_scene_start_screen_input_callback(InputEvent* event, void* context) {
+    furi_assert(event);
+    furi_assert(context);
+
+    App* app = context;
+    bool consumed = false;
+
+    // right now we continue if back is not pressed
+    if (event->key != InputKeyBack) {
+       return scene_manager_handle_custom_event(app->scene_manager, MineSweeperSceneStartScreenContinueEvent); 
+    }
+
+    return consumed;
+}
+
+void minesweeper_scene_start_screen_secondary_draw_callback(Canvas* canvas, void* _model) {
+    furi_assert(canvas);
+    furi_assert(_model);
+    UNUSED(_model);
+    UNUSED(canvas);
+}
+
 void minesweeper_scene_start_screen_on_enter(void* context) {
     furi_assert(context);
-    UNUSED(context);
+    App* app = context;
+
+    furi_assert(app->start_screen);
+
+    // Set callbacks
+    //start_screen_set_timer_callback(app->start_screen, minesweeper_scene_start_screen_timer_callback);
+    start_screen_set_input_callback(
+            app->start_screen,
+            minesweeper_scene_start_screen_input_callback);
+    start_screen_set_secondary_draw_callback(
+            app->start_screen,
+            minesweeper_scene_start_screen_secondary_draw_callback);
+
+    start_screen_set_context(app->start_screen, app);
+
+    start_screen_set_icon_animation(app->start_screen, 0, 0);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, MineSweeperStartScreenView);
 }
 
 bool minesweeper_scene_start_screen_on_event(void* context, SceneManagerEvent event) {
@@ -12,10 +60,13 @@ bool minesweeper_scene_start_screen_on_event(void* context, SceneManagerEvent ev
     App* app = context;
     bool consumed = false;
 
-    UNUSED(app);
-
-    if (event.type == SceneManagerEventTypeCustom) {
-        // Check custom event enums
+    if (event.type == SceneManagerEventTypeBack) {
+        //exit app
+        scene_manager_stop(app->scene_manager);
+        view_dispatcher_stop(app->view_dispatcher);
+        consumed = true;
+    } else if (event.type == SceneManagerEventTypeCustom && event.event == MineSweeperSceneStartScreenContinueEvent) {
+        scene_manager_next_scene(app->scene_manager, MineSweeperSceneMenu); 
         consumed = true;
     }
 
@@ -24,5 +75,7 @@ bool minesweeper_scene_start_screen_on_event(void* context, SceneManagerEvent ev
 
 void minesweeper_scene_start_screen_on_exit(void* context) {
     furi_assert(context);
-    UNUSED(context);
+
+    App* app = context;
+    start_screen_reset(app->start_screen);
 }