RigidBodySystem.h

#pragma once
#ifdef _WIN32
#pragma warning(push)
#pragma warning(disable: 4127)  // conditional expression is constant
#pragma warning(disable: 5033)  // 'register' is no longer a supported storage class
#endif
#include <btBulletDynamicsCommon.h>
#ifdef _WIN32
#pragma warning(pop)
#endif
 
#include "EntityDefinition.h"
#include "Systems/ComponentSystem.h"
 
#include "RigidBodyComponent.h"
 
#include "Services/TaskManager.h"
 
namespace Cogs
{
  namespace Core
  {
    class PhysicsManager;
 
    struct SharedRigidBodyData
    {
      WeakEntityPtr entity;
      bool contact = false;
      bool trigger = false;
    };
 
    struct RigidBodyData
    {
      std::unique_ptr<btRigidBody> rigidBody;
      btCollisionShape * collisionShape;
      std::unique_ptr<btMotionState> motionState;
      std::unique_ptr<SharedRigidBodyData> shared;
      glm::vec3 scale;
      glm::vec3 lastPosition;
      bool kinematic;
    };
 
    class RigidBodySystem : public ComponentSystemWithDataPool<RigidBodyComponent, RigidBodyData>
    {
      using base = ComponentSystemWithDataPool<RigidBodyComponent, RigidBodyData>;
    public:
      RigidBodySystem(Memory::Allocator * allocator, Cogs::SizeType capacity) : ComponentSystemWithDataPool(allocator, capacity) {}
 
      void preUpdate(Context * context) final;
      void update(Context * context) final;
      void postUpdate(Context * context) final;
 
      void destroyComponent(ComponentHandle component) final;
    };
 
    void updateMassProperties(RigidBodyData & data, float mass, const glm::vec3 & scale);
  }
}