ConstraintTypes.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Engine/EngineTypes.h"
#include "EngineDefines.h"
#include "Physics/PhysicsInterfaceDeclares.h"
#include "Chaos/ChaosEngineInterface.h"
#include "ConstraintTypes.generated.h"
 
USTRUCT()
struct FConstraintBaseParams
{
    GENERATED_BODY()
    
    
    UPROPERTY(EditAnywhere, AdvancedDisplay, Category = Constraint, meta = (editcondition = "bSoftConstraint", ClampMin = "0.0"))
    float Stiffness;
 
    UPROPERTY(EditAnywhere, AdvancedDisplay, Category = Constraint, meta = (editcondition = "bSoftConstraint", ClampMin = "0.0"))
    float Damping;
 
    UPROPERTY(EditAnywhere, AdvancedDisplay, Category = Constraint, meta = (ClampMin = "0.0", ClampMax = "1.0"))
    float Restitution;
 
    UPROPERTY(EditAnywhere, AdvancedDisplay, Category = Constraint, meta = (ClampMin = "0.0"))
    float ContactDistance;
 
    UPROPERTY(EditAnywhere, AdvancedDisplay, Category = Constraint)
    uint8 bSoftConstraint : 1;
 
    ENGINE_API FConstraintBaseParams();
};
 
USTRUCT()
struct FLinearConstraint : public FConstraintBaseParams
{
    GENERATED_BODY()
 
    
    UPROPERTY(EditAnywhere, Category = Linear, meta = (ClampMin = "0.0"))
    float Limit;
 
    UPROPERTY(EditAnywhere, Category = Linear, meta = (DisplayName= "X Motion"))
    TEnumAsByte<enum ELinearConstraintMotion> XMotion;
 
    UPROPERTY(EditAnywhere, Category = Linear, meta = (DisplayName= "Y Motion"))
    TEnumAsByte<enum ELinearConstraintMotion> YMotion;
 
    UPROPERTY(EditAnywhere, Category = Linear, meta = (DisplayName= "Z Motion"))
    TEnumAsByte<enum ELinearConstraintMotion> ZMotion;
 
    ENGINE_API FLinearConstraint();
 
    ENGINE_API void UpdateLinearLimit_AssumesLocked(const FPhysicsConstraintHandle& InConstraintRef, float AverageMass, float Scale) const;
};
 
 
USTRUCT()
struct FConeConstraint : public FConstraintBaseParams
{
    GENERATED_BODY()
 
    
    UPROPERTY(EditAnywhere, Category = Angular, meta = (ClampMin = "0.0", ClampMax = "180.0", DisplayName = "Swing 1 Limit"))
    float Swing1LimitDegrees;
 
    UPROPERTY(EditAnywhere, Category = Angular, meta = (ClampMin = "0.0", ClampMax = "180.0"), DisplayName = "Swing 2 Limit")
    float Swing2LimitDegrees;
 
    UPROPERTY(EditAnywhere, Category = Angular, meta = (DisplayName= "Swing 1 Motion"))
    TEnumAsByte<enum EAngularConstraintMotion> Swing1Motion;
 
    UPROPERTY(EditAnywhere, Category = Angular, meta = (DisplayName= "Swing 2 Motion"))
    TEnumAsByte<enum EAngularConstraintMotion> Swing2Motion;
 
    ENGINE_API FConeConstraint();
 
    ENGINE_API void UpdateConeLimit_AssumesLocked(const FPhysicsConstraintHandle& InConstraintRef, float AverageMass) const;
};
 
USTRUCT()
struct FTwistConstraint : public FConstraintBaseParams
{
    GENERATED_BODY()
 
    
    UPROPERTY(EditAnywhere, Category = Angular, meta = (ClampMin = "0.0", ClampMax = "180.0", DisplayName = "Twist Limit"))
    float TwistLimitDegrees;
 
    UPROPERTY(EditAnywhere, Category = Angular)
    TEnumAsByte<enum EAngularConstraintMotion> TwistMotion;
 
    ENGINE_API FTwistConstraint();
 
    ENGINE_API void UpdateTwistLimit_AssumesLocked(const FPhysicsConstraintHandle& InConstraintRef, float AverageMass) const;
};
 
#define     RB_MinSizeToLockDOF             (0.1)
#define     RB_MinAngleToLockDOF            (5.0)