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diff --git a/Source/3rdParty/Box2D/Dynamics/Joints/b2FrictionJoint.h b/Source/3rdParty/Box2D/Dynamics/Joints/b2FrictionJoint.h
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--- a/Source/3rdParty/Box2D/Dynamics/Joints/b2FrictionJoint.h
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@@ -1,119 +0,0 @@
-/*
-* Copyright (c) 2006-2007 Erin Catto http://www.box2d.org
-*
-* This software is provided 'as-is', without any express or implied
-* warranty.  In no event will the authors be held liable for any damages
-* arising from the use of this software.
-* Permission is granted to anyone to use this software for any purpose,
-* including commercial applications, and to alter it and redistribute it
-* freely, subject to the following restrictions:
-* 1. The origin of this software must not be misrepresented; you must not
-* claim that you wrote the original software. If you use this software
-* in a product, an acknowledgment in the product documentation would be
-* appreciated but is not required.
-* 2. Altered source versions must be plainly marked as such, and must not be
-* misrepresented as being the original software.
-* 3. This notice may not be removed or altered from any source distribution.
-*/
-
-#ifndef B2_FRICTION_JOINT_H
-#define B2_FRICTION_JOINT_H
-
-#include "Box2D/Dynamics/Joints/b2Joint.h"
-
-/// Friction joint definition.
-struct b2FrictionJointDef : public b2JointDef
-{
-	b2FrictionJointDef()
-	{
-		type = e_frictionJoint;
-		localAnchorA.SetZero();
-		localAnchorB.SetZero();
-		maxForce = 0.0f;
-		maxTorque = 0.0f;
-	}
-
-	/// Initialize the bodies, anchors, axis, and reference angle using the world
-	/// anchor and world axis.
-	void Initialize(b2Body* bodyA, b2Body* bodyB, const b2Vec2& anchor);
-
-	/// The local anchor point relative to bodyA's origin.
-	b2Vec2 localAnchorA;
-
-	/// The local anchor point relative to bodyB's origin.
-	b2Vec2 localAnchorB;
-
-	/// The maximum friction force in N.
-	float32 maxForce;
-
-	/// The maximum friction torque in N-m.
-	float32 maxTorque;
-};
-
-/// Friction joint. This is used for top-down friction.
-/// It provides 2D translational friction and angular friction.
-class b2FrictionJoint : public b2Joint
-{
-public:
-	b2Vec2 GetAnchorA() const override;
-	b2Vec2 GetAnchorB() const override;
-
-	b2Vec2 GetReactionForce(float32 inv_dt) const override;
-	float32 GetReactionTorque(float32 inv_dt) const override;
-
-	/// The local anchor point relative to bodyA's origin.
-	const b2Vec2& GetLocalAnchorA() const { return m_localAnchorA; }
-
-	/// The local anchor point relative to bodyB's origin.
-	const b2Vec2& GetLocalAnchorB() const  { return m_localAnchorB; }
-
-	/// Set the maximum friction force in N.
-	void SetMaxForce(float32 force);
-
-	/// Get the maximum friction force in N.
-	float32 GetMaxForce() const;
-
-	/// Set the maximum friction torque in N*m.
-	void SetMaxTorque(float32 torque);
-
-	/// Get the maximum friction torque in N*m.
-	float32 GetMaxTorque() const;
-
-	/// Dump joint to dmLog
-	void Dump() override;
-
-protected:
-
-	friend class b2Joint;
-
-	b2FrictionJoint(const b2FrictionJointDef* def);
-
-	void InitVelocityConstraints(const b2SolverData& data) override;
-	void SolveVelocityConstraints(const b2SolverData& data) override;
-	bool SolvePositionConstraints(const b2SolverData& data) override;
-
-	b2Vec2 m_localAnchorA;
-	b2Vec2 m_localAnchorB;
-
-	// Solver shared
-	b2Vec2 m_linearImpulse;
-	float32 m_angularImpulse;
-	float32 m_maxForce;
-	float32 m_maxTorque;
-
-	// Solver temp
-	int32 m_indexA;
-	int32 m_indexB;
-	b2Vec2 m_rA;
-	b2Vec2 m_rB;
-	b2Vec2 m_localCenterA;
-	b2Vec2 m_localCenterB;
-	float32 m_invMassA;
-	float32 m_invMassB;
-	float32 m_invIA;
-	float32 m_invIB;
-	b2Mat22 m_linearMass;
-	float32 m_angularMass;
-};
-
-#endif