add hello world example and edit source tree

examples/testbed/tests/character_test.h

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+/*
+* Copyright (c) 2016-2016 Irlan Robson http://www.irlan.net
+*
+* 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 CHARACTER_H
+#define CHARACTER_H
+
+class Character : public Test
+{
+public:
+	Character()
+	{
+		{
+			b3BodyDef bdef;
+			b3Body* ground = m_world.CreateBody(bdef);
+
+			b3MeshShape ms;
+			ms.m_mesh = m_meshes + e_gridMesh;
+
+			b3ShapeDef sd;
+			sd.shape = &ms;
+			
+			ground->CreateShape(sd);
+		}
+
+		{
+			b3BodyDef bdef;
+			bdef.type = b3BodyType::e_dynamicBody;
+			bdef.fixedRotationY = true;
+			bdef.position.Set(0.0f, 5.0f, 0.0f);
+			
+			m_character = m_world.CreateBody(bdef);
+
+			b3CapsuleShape cap;
+			cap.m_centers[0].Set(0.0f, 1.0f, 0.0f);
+			cap.m_centers[1].Set(0.0f, -1.0f, 0.0f);
+			cap.m_radius = 1.0f;
+
+			b3ShapeDef sdef;
+			sdef.shape = ∩
+			sdef.density = 1.0f;
+			sdef.friction = 0.5f;
+
+			m_character->CreateShape(sdef);
+		}
+	}
+
+	void RayHit()
+	{
+		if (m_rayHit.shape)
+		{
+			if (m_rayHit.shape->GetBody() != m_character)
+			{
+				Test::RayHit();
+			}
+		}
+	}
+
+	void Step()
+	{
+		if (m_rayHit.shape)
+		{
+			if (m_rayHit.shape->GetBody() != m_character)
+			{
+				b3Vec3 point = m_rayHit.point;
+				b3Vec3 normal = m_rayHit.normal;
+
+				const b3Transform& xf = m_character->GetTransform();
+				b3Vec3 n = point - xf.position;
+				n.Normalize();
+				
+				m_character->ApplyForceToCenter(100.0f * n, true);
+				g_debugDraw->DrawSolidCircle(normal, point + (0.05f * normal), 5.0f, b3Color(0.5f, 0.5f, 1.0f, 0.5f));
+			}
+		}
+
+		Test::Step();
+	}
+
+	static Test* Create()
+	{
+		return new Character();
+	}
+
+	b3Body* m_character;
+};
+
+#endif