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/SDL_AppInit.c

@@ -0,0 +1,60 @@
+#include <akgltest.h>
+
+SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
+{
+    akgl_Actor *actorptr = NULL;
+    *appstate = (void *)&game.state;
+    PREPARE_ERROR(e);
+    
+    AKGL_BITMASK_ADD(game.state.flags, AKGLTEST_STATE_LOADING);
+    
+    ATTEMPT {
+	FAIL_ZERO_BREAK(e, appstate, AKERR_NULLPOINTER, "NULL appstate pointer");
+
+	strcpy((char *)&game.name, "sdl3-gametest");
+	strcpy((char *)&game.version, "0.0.1");
+	strcpy((char *)&game.uri, "net.aklabs.games.sdl3-gametest");
+
+	//CATCH(e, akgl_game_load("assets/savegame.bin"));
+	CATCH(e, akgl_game_init());
+	CATCH(e, akgl_game_state_lock());
+	CATCH(e, akgl_registry_load_properties("assets/properties.json"));
+	CATCH(e, akgl_render_init2d(&renderer));
+	CATCH(e, akgl_physics_init_sidescroller(&physics));
+	CATCH(e, akgl_controller_list_keyboards());
+	
+	CATCH(e, akgltest_load_assets());
+		
+	CATCH(e, akgl_heap_next_actor(&actorptr));
+	CATCH(e, akgl_actor_initialize((akgl_Actor *)actorptr, "player"));
+	actorptr->basechar = SDL_GetPointerProperty(
+	    AKGL_REGISTRY_CHARACTER,
+	    "little guy",
+	    NULL);
+	FAIL_ZERO_BREAK(e, actorptr->basechar, AKERR_REGISTRY, "Can't load character 'little guy' from the registry");
+	actorptr->movement_controls_face = false;
+	actorptr->state = (AKGL_ACTOR_STATE_ALIVE | AKGL_ACTOR_STATE_FACE_LEFT);
+	actorptr->x = 320;
+	actorptr->y = 240;
+	actorptr->visible = false;
+
+	strcpy((char *)&dirnamebuf, "assets/memories.mp3");
+	CATCH(e, akgl_load_start_bgm((char *)&dirnamebuf));
+	CATCH(e, music_toggle(NULL, NULL));
+	
+	CATCH(e, akgl_text_loadfont("C64Pro", "assets/C64_Pro-STYLE.ttf", 18));
+
+	
+    } CLEANUP {
+	IGNORE(akgl_game_state_unlock());
+    } PROCESS(e) {
+    } HANDLE_DEFAULT(e) {
+	LOG_ERROR(e);
+	return SDL_APP_FAILURE;
+    } FINISH_NORETURN(e);
+      
+    AKGL_BITMASK_DEL(game.state.flags, AKGLTEST_STATE_LOADING);
+    AKGL_BITMASK_ADD(game.state.flags, AKGLTEST_STATE_WAITFORINPUT);
+
+    return SDL_APP_CONTINUE;
+}