X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgame%2Fstage.cpp;h=81893e1e1ef8c27ca72db42e456c78462a999452;hb=fce6e7846814e54de9d38000d2f5e2295ee2119e;hp=73eb9a55f7299542cb08cf8c95b44083d7ee8fc2;hpb=f93a0f0afe8aff4d0bbc8ee393918881cfdd9db8;p=libs%2Fgame.git

diff --git a/source/game/stage.cpp b/source/game/stage.cpp
index 73eb9a5..81893e1 100644
--- a/source/game/stage.cpp
+++ b/source/game/stage.cpp
@@ -1,26 +1,62 @@
 #include "stage.h"
+#include "camera.h"
 #include "root.h"
 #include "system.h"
 
+using namespace std;
+
 namespace Msp::Game {
 
-Stage::Stage():
+Stage::Stage(DataFile::Collection &r):
+	resources(r),
 	event_source(event_bus),
+	event_observer(event_bus),
 	root(std::make_unique<Root>(*this))
-{ }
+{
+	event_observer.observe<Events::ComponentCreated>([this](auto &e){
+		if(!active_camera)
+			if(Handle<Camera> camera = dynamic_handle_cast<Camera>(e.component))
+				set_active_camera(camera);
+	});
+}
 
 // Hide unique_ptr destructors from the header
 Stage::~Stage()
 { }
 
+void Stage::remove_system(System &s)
+{
+	erase_if(systems, [&s](auto &p){ return p.get()==&s; });
+}
+
+void Stage::set_active_camera(Handle<Camera> c)
+{
+	active_camera = c;
+	event_source.emit<Events::CameraChanged>(active_camera);
+}
+
+void Stage::synthesize_initial_events(EventObserver &target_observer)
+{
+	synthesize_initial_events(Handle<Entity>::from_object(root.get()), target_observer);
+	if(active_camera)
+		event_source.emit_to<Events::CameraChanged>(target_observer, active_camera);
+}
+
+void Stage::synthesize_initial_events(Handle<Entity> entity, EventObserver &target_observer)
+{
+	for(Handle<Component> c: entity->get_components())
+		event_source.emit_to<Events::ComponentCreated>(target_observer, c);
+	for(Handle<Entity> e: entity->get_children())
+		synthesize_initial_events(e, target_observer);
+	event_source.emit_to<Events::EntityCreated>(target_observer, entity);
+}
+
 void Stage::tick(Time::TimeDelta dt)
 {
-	for(const auto &s: systems)
-		s->pre_tick();
 	for(const auto &s: systems)
 		s->tick(dt);
 	for(const auto &s: systems)
-		s->post_tick();
+		s->deferred_tick();
 }
 
 } // namespace Msp::Game