IslandGroup.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "Containers/Array.h"
 
#include "Chaos/Evolution/ConstraintGroupSolver.h"
#include "Chaos/Island/IslandManagerFwd.h"
 
namespace Chaos
{
    namespace Private
    {
        class FPBDIslandConstraintGroupSolver : public FPBDConstraintGroupSolver
        {
        public:
            UE_NONCOPYABLE(FPBDIslandConstraintGroupSolver);
 
            CHAOS_API FPBDIslandConstraintGroupSolver(FPBDIslandManager& InIslandManager);
 
            CHAOS_API void AddIsland(FPBDIsland* Island);
 
            FORCEINLINE const TArray<FPBDIsland*>& GetIslands() { return Islands; }
 
            inline int32 GetNumParticles() const { return NumParticles; }
 
            inline int32 GetNumConstraints() const { return NumConstraints; }
 
            inline int32 GetNumConstraints(const int32 ContainerId) const { return NumContainerConstraints[ContainerId]; }
 
            CHAOS_API virtual void SetIterationSettings(const FIterationSettings& InIterations) override;
 
        protected:
            // Base class overrides
            CHAOS_API virtual void SetConstraintSolverImpl(const int32 ContainerId) override final;
            CHAOS_API virtual void ResetImpl() override final;
            CHAOS_API virtual void AddConstraintsImpl() override final;
            CHAOS_API virtual void GatherBodiesImpl(const FReal Dt, const int32 BeginBodyIndex, const int32 EndBodyIndex) override final;
 
        private:
            CHAOS_API void ApplyIterationSettingsOverrides();
 
            FPBDIslandManager& IslandManager;
 
            // Item counters used to initialize the solver containers
            static constexpr int32 NumExpectedConstraintTypes = 5;
            int32 NumParticles;
            int32 NumConstraints;
            TArray<int32, TInlineAllocator<NumExpectedConstraintTypes>> NumContainerConstraints;    // Per ContainerId
 
            TArray<FPBDIsland*> Islands;
        };
 
    }   // namespace Private
 
 
    using FPBDIslandConstraintGroupSolver UE_DEPRECATED(5.2, "Internal class moved to Private namespace") = Private::FPBDIslandConstraintGroupSolver;
 
}   // namespace Chaos