10 Stage::Stage(DataFile::Collection &r):
12 event_source(event_bus),
13 event_observer(event_bus),
14 root(std::make_unique<Root>(*this))
16 event_observer.observe<Events::ComponentCreated>([this](auto &e){
18 if(Handle<Camera> camera = dynamic_handle_cast<Camera>(e.component))
19 set_active_camera(camera);
23 // Hide unique_ptr destructors from the header
27 void Stage::remove_system(System &s)
29 erase_if(systems, [&s](auto &p){ return p.get()==&s; });
32 void Stage::set_active_camera(Handle<Camera> c)
35 event_source.emit<Events::CameraChanged>(active_camera);
38 void Stage::synthesize_initial_events(EventObserver &target_observer)
40 synthesize_initial_events(Handle<Entity>::from_object(root.get()), target_observer);
42 event_source.emit_to<Events::CameraChanged>(target_observer, active_camera);
45 void Stage::synthesize_initial_events(Handle<Entity> entity, EventObserver &target_observer)
47 for(Handle<Component> c: entity->get_components())
48 event_source.emit_to<Events::ComponentCreated>(target_observer, c);
49 for(Handle<Entity> e: entity->get_children())
50 synthesize_initial_events(e, target_observer);
51 event_source.emit_to<Events::EntityCreated>(target_observer, entity);
54 void Stage::tick(Time::TimeDelta dt)
56 for(const auto &s: systems)
58 for(const auto &s: systems)
62 } // namespace Msp::Game