PhysX.h

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/*
   Copyright (c) 2018 DIVIDE-Studio
   Copyright (c) 2009 Ionut Cava
 
   This file is part of DIVIDE Framework.
 
   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software
   and associated documentation files (the "Software"), to deal in the Software
   without restriction,
   including without limitation the rights to use, copy, modify, merge, publish,
   distribute, sublicense,
   and/or sell copies of the Software, and to permit persons to whom the
   Software is furnished to do so,
   subject to the following conditions:
 
   The above copyright notice and this permission notice shall be included in
   all copies or substantial portions of the Software.
 
   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED,
   INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
   PARTICULAR PURPOSE AND NONINFRINGEMENT.
   IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
   DAMAGES OR OTHER LIABILITY,
   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
   IN CONNECTION WITH THE SOFTWARE
   OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 */
 
#pragma once
#ifndef DVD_PHYSX_H_
#define DVD_PHYSX_H_
 
#ifndef DVD_PHYSICS_API_FOUND_
#define DVD_PHYSICS_API_FOUND_
#endif
 
#include "PhysXActor.h"
#include "PhysXSceneInterface.h"
#include "Physics/Headers/PhysicsAPIWrapper.h"
 
namespace physx
{
    class PxPvd;
    class PxPvdTransport;
}
 
constexpr auto MAX_ACTOR_QUEUE = 30;
 
namespace Divide {
 
class PhysX;
class PxDefaultAllocator final : public physx::PxAllocatorCallback
{
    void* allocate(const size_t size, const char*, const char*, int) noexcept override
    {
        return mi_new_aligned_nothrow(size, 16);
    }
 
    void deallocate(void* ptr) noexcept override
    {
        mi_free_aligned(ptr, s_alignment);
    }
 
private:
    static constexpr size_t s_alignment = 16u;
};
 
class PhysicsAsset;
class SceneGraphNode;
class PhysX final : public PhysicsAPIWrapper {
 
public:
    explicit PhysX( PlatformContext& context );
 
    [[nodiscard]] ErrorCode initPhysicsAPI(U8 targetFrameRate, F32 simSpeed) override;
    [[nodiscard]] bool closePhysicsAPI() override;
    void frameStarted(U64 deltaTimeGameUS ) override;
    void frameEnded(U64 deltaTimeGameUS ) override;
    void idle() override;
 
    void updateTimeStep(U8 timeStepFactor, F32 simSpeed) override;
 
    [[nodiscard]] bool initPhysicsScene(Scene& scene) override;
    [[nodiscard]] bool destroyPhysicsScene(const Scene& scene) override;
 
    [[nodiscard]] bool intersect(const Ray& intersectionRay, vec2<F32> range, vector<SGNRayResult>& intersectionsOut) const override;
 
    [[nodiscard]] physx::PxPhysics* getSDK() const noexcept { return _gPhysicsSDK; }
 
    [[nodiscard]] PhysicsAsset* createRigidActor(SceneGraphNode* node, RigidBodyComponent& parentComp) override;
 
    [[nodiscard]] bool convertActor(PhysicsAsset* actor, PhysicsGroup newGroup) override;
    void togglePvdConnection() const;
    void createPvdConnection(const char* ip, physx::PxU32 port, physx::PxU32 timeout, bool useFullConnection);
 
#if PX_SUPPORT_GPU_PHYSX
    POINTER_R(physx::PxCudaContextManager, cudaContextManager, nullptr);
#endif //PX_SUPPORT_GPU_PHYSX
 
protected:
    PhysXSceneInterface_uptr _targetScene;
    physx::PxRigidActor* createActorForGroup(PhysicsGroup group, const physx::PxTransform& pose);
private:
    F32 _simulationSpeed = 1.0f;
    physx::PxPhysics* _gPhysicsSDK = nullptr;
    physx::PxFoundation* _foundation = nullptr;
    physx::PxMaterial* _defaultMaterial = nullptr;
    physx::PxReal _timeStep = 0.0f;
    physx::PxU8   _timeStepFactor = 0;
    physx::PxReal _accumulator = 0.0f;
    physx::PxPvd* _pvd = nullptr;
    physx::PxPvdTransport* _transport = nullptr;
 
    static SharedMutex s_meshCacheLock;
    static hashMap<U64, physx::PxTriangleMesh*> s_gMeshCache;
};
 
};  // namespace Divide
 
#endif //DVD_PHYSX_H_