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diff --git a/Client/ThirdParty/Box2D/testbed/tests/restitution.cpp b/Client/ThirdParty/Box2D/testbed/tests/restitution.cpp
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+++ b/Client/ThirdParty/Box2D/testbed/tests/restitution.cpp
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+// MIT License
+
+// Copyright (c) 2019 Erin Catto
+
+// 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.
+
+#include "test.h"
+
+// Note: even with a restitution of 1.0, there is some energy change
+// due to position correction.
+class Restitution : public Test
+{
+public:
+
+	Restitution()
+	{
+		const float threshold = 10.0f;
+
+		{
+			b2BodyDef bd;
+			b2Body* ground = m_world->CreateBody(&bd);
+
+			b2EdgeShape shape;
+			shape.SetTwoSided(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
+			
+			b2FixtureDef fd;
+			fd.shape = &shape;
+			fd.restitutionThreshold = threshold;
+			ground->CreateFixture(&fd);
+		}
+
+		{
+			b2CircleShape shape;
+			shape.m_radius = 1.0f;
+
+			b2FixtureDef fd;
+			fd.shape = &shape;
+			fd.density = 1.0f;
+
+			float restitution[7] = { 0.0f, 0.1f, 0.3f, 0.5f, 0.75f, 0.9f, 1.0f };
+
+			for (int32 i = 0; i < 7; ++i)
+			{
+				b2BodyDef bd;
+				bd.type = b2_dynamicBody;
+				bd.position.Set(-10.0f + 3.0f * i, 20.0f);
+
+				b2Body* body = m_world->CreateBody(&bd);
+
+				fd.restitution = restitution[i];
+				fd.restitutionThreshold = threshold;
+				body->CreateFixture(&fd);
+			}
+		}
+	}
+
+	static Test* Create()
+	{
+		return new Restitution;
+	}
+};
+
+static int testIndex = RegisterTest("Forces", "Restitution", Restitution::Create);