add hello world example and edit source tree

examples/testbed/tests/sphere_stack.h

@@ -0,0 +1,93 @@
+/*
+* 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 SPHERE_STACK_H
+#define SPHERE_STACK_H
+
+class SphereStack : public Test
+{
+public:
+	enum
+	{
+		e_rowCount = 1,
+		e_columnCount = 5,
+		e_depthCount = 1
+	};
+
+	SphereStack()
+	{
+		{
+			b3BodyDef bd;
+			bd.type = b3BodyType::e_staticBody;
+			b3Body* ground = m_world.CreateBody(bd);
+
+			b3HullShape hs;
+			hs.m_hull = &m_groundHull;
+			
+			b3ShapeDef sd;
+			sd.shape = &hs;
+			sd.density = 0.0f;
+			sd.friction = 1.0f;
+			sd.restitution = 0.0f;
+			
+			b3Shape* groundShape = ground->CreateShape(sd);
+		}
+
+		b3Vec3 stackOrigin;
+		stackOrigin.Set(0.0f, 5.0f, 0.0f);
+		float32 radius = 1.0f;
+		float32 diameter = 2.0f * radius;
+
+		for (u32 i = 0; i < e_rowCount; ++i)
+		{
+			for (u32 j = 0; j < e_columnCount; ++j)
+			{
+				for (u32 k = 0; k < e_depthCount; ++k)
+				{
+					b3BodyDef bdef;
+					bdef.type = b3BodyType::e_dynamicBody;
+					bdef.position.x = float32(i) * diameter;
+					bdef.position.y = float32(j) * diameter;
+					bdef.position.z = float32(k) * diameter;
+					bdef.position += stackOrigin;
+					bdef.linearVelocity.Set(0.0f, -50.0f, 0.0f);
+
+					b3Body* body = m_world.CreateBody(bdef);
+
+					b3SphereShape sphere;
+					sphere.m_center.SetZero();
+					sphere.m_radius = radius;
+
+					b3ShapeDef sdef;
+					sdef.shape = &sphere;
+					sdef.density = 1.0f;
+					sdef.friction = 0.3f;
+
+					b3Shape* shape = body->CreateShape(sdef);
+				}
+			}
+		}
+	}
+
+	static Test* Create()
+	{
+		return new SphereStack();
+	}
+};
+
+#endif