Re-added a couple of box2d files which had the wrong capitalisation.

extras/Demo/Source/Demos/Box2DTests/AddPair.h

@@ -0,0 +1,51 @@
+
+#ifndef AddPair_H
+#define AddPair_H
+
+class AddPair : public Test
+{
+public:
+
+    AddPair()
+    {
+        m_world->SetGravity(b2Vec2(0.0f,0.0f));
+        {
+            b2CircleShape shape;
+            shape.m_p.SetZero();
+            shape.m_radius = 0.1f;
+
+            float minX = -6.0f;
+            float maxX = 0.0f;
+            float minY = 4.0f;
+            float maxY = 6.0f;
+
+            for (int i = 0; i < 400; ++i)
+            {
+                b2BodyDef bd;
+                bd.type = b2_dynamicBody;
+                bd.position = b2Vec2(RandomFloat(minX,maxX),RandomFloat(minY,maxY));
+                b2Body* body = m_world->CreateBody(&bd);
+                body->CreateFixture(&shape, 0.01f);
+            }
+        }
+
+        {
+            b2PolygonShape shape;
+            shape.SetAsBox(1.5f, 1.5f);
+            b2BodyDef bd;
+            bd.type = b2_dynamicBody;
+            bd.position.Set(-40.0f,5.0f);
+            bd.bullet = true;
+            b2Body* body = m_world->CreateBody(&bd);
+            body->CreateFixture(&shape, 1.0f);
+            body->SetLinearVelocity(b2Vec2(150.0f, 0.0f));
+        }
+    }
+
+    static Test* Create()
+    {
+        return new AddPair;
+    }
+};
+
+#endif

extras/Demo/Source/Demos/Box2DTests/Chain.h

@@ -0,0 +1,74 @@
+/*
+* Copyright (c) 2006-2009 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 CHAIN_H
+#define CHAIN_H
+
+class Chain : public Test
+{
+public:
+    Chain()
+    {
+        b2Body* ground = NULL;
+        {
+            b2BodyDef bd;
+            ground = m_world->CreateBody(&bd);
+
+            b2EdgeShape shape;
+            shape.Set(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
+            ground->CreateFixture(&shape, 0.0f);
+        }
+
+        {
+            b2PolygonShape shape;
+            shape.SetAsBox(0.6f, 0.125f);
+
+            b2FixtureDef fd;
+            fd.shape = &shape;
+            fd.density = 20.0f;
+            fd.friction = 0.2f;
+
+            b2RevoluteJointDef jd;
+            jd.collideConnected = false;
+
+            const float32 y = 25.0f;
+            b2Body* prevBody = ground;
+            for (int i = 0; i < 30; ++i)
+            {
+                b2BodyDef bd;
+                bd.type = b2_dynamicBody;
+                bd.position.Set(0.5f + i, y);
+                b2Body* body = m_world->CreateBody(&bd);
+                body->CreateFixture(&fd);
+
+                b2Vec2 anchor(float32(i), y);
+                jd.Initialize(prevBody, body, anchor);
+                m_world->CreateJoint(&jd);
+
+                prevBody = body;
+            }
+        }
+    }
+
+    static Test* Create()
+    {
+        return new Chain;
+    }
+};
+
+#endif