IPhysicsComponent.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Chaos/ParticleHandleFwd.h"
#include "Chaos/PhysicsObject.h"
#include "Chaos/Serialization/SolverSerializer.h"
#include "Containers/Array.h"
#include "UObject/ObjectMacros.h"
#include "UObject/Interface.h"
#include "IPhysicsComponent.generated.h"
 
UINTERFACE(MinimalApi, Experimental, meta = (CannotImplementInterfaceInBlueprint))
class UPhysicsComponent : public UInterface
{
    GENERATED_BODY()
};
 
class IPhysicsComponent
{
    GENERATED_BODY()
 
public:
    virtual Chaos::FPhysicsObject* GetPhysicsObjectById(Chaos::FPhysicsObjectId Id) const = 0;
    virtual Chaos::FPhysicsObject* GetPhysicsObjectByName(const FName& Name) const = 0;
    virtual TArray<Chaos::FPhysicsObject*> GetAllPhysicsObjects() const = 0;
    
    virtual Chaos::FPhysicsObjectId GetIdFromGTParticle(Chaos::FGeometryParticle* Particle) const = 0;
 
#if UE_WITH_REMOTE_OBJECT_HANDLE
 
protected:
    virtual void MigratePhysicsState(FArchive& Ar) = 0;
    virtual void ApplyMigratedPhysicsState(Chaos::FSerializedDataBufferPtr MigratedStateData = nullptr) = 0;
public:
 
#endif
};
 
template<typename TId>
TArray<Chaos::FPhysicsObjectHandle> GetAllPhysicsObjectsById(IPhysicsComponent* Component, const TArray<TId>& AllIds)
{
    constexpr bool bIsId = std::is_same_v<TId, Chaos::FPhysicsObjectId>;
    constexpr bool bIsName = std::is_same_v<TId, FName>;
 
    static_assert(bIsId || bIsName, "Invalid ID type passed to GetAllPhysicsObjectsById");
    if (!Component)
    {
        return {};
    }
 
    TArray<Chaos::FPhysicsObjectHandle> Objects;
    Objects.Reserve(AllIds.Num());
 
    for (const TId& Id : AllIds)
    {
        if constexpr (bIsId)
        {
            Objects.Add(Component->GetPhysicsObjectById(Id));
        }
        else if constexpr (bIsName)
        {
            Objects.Add(Component->GetPhysicsObjectByName(Id));
        }
    }
 
    return Objects;
}