source/game/transformpropagator.h

   1 #ifndef MSP_GAME_TRANSFORMPROPAGATOR_H_
   2 #define MSP_GAME_TRANSFORMPROPAGATOR_H_
   3
   4 #include "eventobserver.h"
   5 #include "handle.h"
   6 #include "mspgame_api.h"
   7 #include "system.h"
   8
   9 namespace Msp::Game {
  10
  11 class Entity;
  12 class Transform;
  13
  14 class MSPGAME_API TransformPropagator: public System
  15 {
  16 private:
  17         struct ParentedTransform
  18         {
  19                 Handle<Transform> transform;
  20                 Handle<Transform> parent;
  21         };
  22
  23         EventObserver observer;
  24         std::vector<ParentedTransform> transforms;
  25         bool transforms_dirty = true;
  26
  27 public:
  28         TransformPropagator(Stage &);
  29
  30         void tick(Time::TimeDelta) override;
  31
  32 private:
  33         void rebuild_transform_order();
  34         void rebuild_transform_order(Handle<Entity>, Handle<Transform>);
  35 };
  36
  37 } // namespace Msp::Game
  38
  39 #endif