WorldSystem/Systems/Physics.hpp

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#pragma once
#include "System.hpp"
#include "Physics/Physics.hpp"
 
#ifndef CORI_PHYSICS_TASK_POOL_SIZE
    #define CORI_PHYSICS_TASK_POOL_SIZE 64
#endif
 
namespace Cori {
    namespace World {
        namespace Systems {
            class PhysicsSystem final : public System {
            public:
 
                void OnTickUpdate(Core::GameTimer& gameTimer) override;
 
                bool Create(Physics::World::Params params);

                Physics::WorldRef GetWorld() { return m_World; }
 
                static constexpr SystemPriority Priority = 5;
 
                static void* EnqueueTask(b2TaskCallback* task, int32_t itemCount, int32_t minRange, void* taskContext, void* userContext);
                static void FinishTask(void* taskPtr, void* userContext);
 
            private:
                struct Box2DTaskGroup {
                    std::vector<std::future<void>> futures;
                };
 
                Physics::World m_World;
 
                uint16_t m_WorkerCount{ 1 };
                std::array<Box2DTaskGroup, CORI_PHYSICS_TASK_POOL_SIZE> m_TaskPool;
                std::atomic<uint16_t> m_CurrentTaskIndex;
 
                void OnRigidBodyCreate(entt::registry& registry, entt::entity entity);
            };
        }
    }
}