source/game/stage.cpp

   1 #include "stage.h"
   2 #include "camera.h"
   3 #include "root.h"
   4 #include "system.h"
   5
   6 using namespace std;
   7
   8 namespace Msp::Game {
   9
  10 Stage::Stage(DataFile::Collection &r):
  11         resources(r),
  12         event_source(event_bus),
  13         event_observer(event_bus),
  14         root(std::make_unique<Root>(*this))
  15 {
  16         event_observer.observe<Events::ComponentCreated>([this](auto &e){
  17                 if(!active_camera)
  18                         if(Handle<Camera> camera = dynamic_handle_cast<Camera>(e.component))
  19                                 set_active_camera(camera);
  20         });
  21 }
  22
  23 // Hide unique_ptr destructors from the header
  24 Stage::~Stage()
  25 { }
  26
  27 void Stage::remove_system(System &s)
  28 {
  29         erase_if(systems, [&s](auto &p){ return p.get()==&s; });
  30 }
  31
  32 void Stage::set_active_camera(Handle<Camera> c)
  33 {
  34         active_camera = c;
  35         event_source.emit<Events::CameraChanged>(active_camera);
  36 }
  37
  38 void Stage::tick(Time::TimeDelta dt)
  39 {
  40         for(const auto &s: systems)
  41                 s->tick(dt);
  42 }
  43
  44 } // namespace Msp::Game