add hello world example and edit source tree

examples/testbed/tests/multiple_shapes.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 MULTIPLE_SHAPES_H
+#define MULTIPLE_SHAPES_H
+
+class MultipleShapes : public Test
+{
+public:
+	MultipleShapes()
+	{
+		g_camera.m_center.Set(2.0f, -2.0f, 0.0f);
+		g_camera.m_zoom = 50.0f;
+		g_settings.drawCenterOfMasses = true;
+
+		{
+			b3BodyDef bd;
+			b3Body* body = m_world.CreateBody(bd);
+
+			b3HullShape hs;
+			hs.m_hull = &m_groundHull;
+
+			b3ShapeDef sd;
+			sd.shape = &hs;
+
+			body->CreateShape(sd);
+		}
+
+		{
+			b3Transform xf;
+			xf.SetIdentity();
+			xf.position.Set(-5.0f, 10.0f, 0.0f);
+			m_box1.SetTransform(xf);
+		}
+		
+		{
+			b3Transform xf;
+			xf.SetIdentity();
+			xf.position.Set(5.0f, 10.0f, 0.0f);
+			m_box2.SetTransform(xf);
+		}
+		
+		{
+			b3Transform xf;
+			xf.SetIdentity();
+			xf.position.Set(0.0f, 2.0f, 0.0f);
+			m_box3.SetTransform(xf);
+		}
+		 
+		{
+			b3Transform xf;
+			xf.SetIdentity();
+			xf.position.Set(0.0f, 6.0f, 0.0f);
+			m_box4.SetTransform(xf);
+		}
+		
+		{
+			b3Transform xf;
+			xf.SetIdentity();
+			xf.position.Set(0.0f, 10.0f, 0.0f);
+			m_box5.SetTransform(xf);
+		}
+		
+		{
+			b3BodyDef bd;
+			bd.type = e_dynamicBody;
+			bd.angularVelocity.Set(0.0f, B3_PI, 0.0f);
+
+			b3Body* body = m_world.CreateBody(bd);
+
+			b3HullShape hs;
+
+			b3ShapeDef sd;
+			sd.shape = &hs;
+			sd.density = 0.1f;
+
+			hs.m_hull = &m_box1;
+			body->CreateShape(sd);
+			
+			hs.m_hull = &m_box2;
+			body->CreateShape(sd);
+
+			hs.m_hull = &m_box3;
+			body->CreateShape(sd); 
+
+			hs.m_hull = &m_box4;
+			body->CreateShape(sd); 
+
+			hs.m_hull = &m_box5;
+			body->CreateShape(sd); 
+		}
+	}
+
+	static Test* Create()
+	{
+		return new MultipleShapes();
+	}
+
+	b3BoxHull m_box1;
+	b3BoxHull m_box2;
+	b3BoxHull m_box3;
+	b3BoxHull m_box4;
+	b3BoxHull m_box5;
+};
+
+#endif