Break out the game demo into multiple source and include files, add a bunch of missing assets, conform to the new subsystems interface from libakgl

src/events.c

@@ -0,0 +1,45 @@
+#include <akgltest.h>
+
+akerr_ErrorContext AKERR_NOIGNORE *savegame(akgl_Actor *obj, SDL_Event *event)
+{
+    return akgl_game_save("assets/savegame.bin");
+}
+
+akerr_ErrorContext AKERR_NOIGNORE *quit_game(akgl_Actor *obj, SDL_Event *event)
+{
+    PREPARE_ERROR(e);
+    AKGL_BITMASK_ADD(game.state.flags, AKGLTEST_STATE_QUIT);
+    SDL_Log("Quitting game");
+    SUCCEED_RETURN(e);
+}
+
+SDL_AppResult SDL_AppEvent(void *appstate, SDL_Event *event)
+{
+    PREPARE_ERROR(e);
+    
+    ATTEMPT {
+	CATCH(e, akgl_game_state_lock());
+	FAIL_ZERO_BREAK(e, appstate, AKERR_NULLPOINTER, "NULL appstate pointer");
+	FAIL_ZERO_BREAK(e, event, AKERR_NULLPOINTER, "NULL event pointer");
+	
+	if ( AKGL_BITMASK_HAS(game.state.flags, AKGLTEST_STATE_WAITFORINPUT) ) {
+	    if ( event->type == SDL_EVENT_GAMEPAD_BUTTON_DOWN ||
+		 event->type == SDL_EVENT_GAMEPAD_BUTTON_UP ||
+		 event->type == SDL_EVENT_KEY_DOWN ||
+		 event->type == SDL_EVENT_KEY_UP ) {
+		// get the player's default keyboard or gamepad id from the event
+		CATCH(e, akgltest_controller_get_defaults(appstate, event));
+		CATCH(e, akgltest_set_gamemode_menu(appstate, event));
+	    }
+	} else {
+	    CATCH(e, akgl_controller_handle_event(appstate, event));
+	}
+	if (event->type == SDL_EVENT_QUIT) {
+	    return SDL_APP_SUCCESS;  /* end the program, reporting success to the OS. */
+	}
+    } CLEANUP {
+	IGNORE(akgl_game_state_unlock());
+    } PROCESS(e) {
+    } FINISH_NORETURN(e);
+    return SDL_APP_CONTINUE;  /* carry on with the program! */
+}