add hello world example and edit source tree

examples/testbed/tests/pyramids.h

@@ -0,0 +1,104 @@
+/*
+* 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 PYRAMIDS_H
+#define PYRAMIDS_H
+
+class Pyramids : public Test
+{
+public:
+	enum
+	{
+		e_count = 10,
+		e_depthCount = 10,
+	};
+
+	Pyramids()
+	{
+		g_camera.m_zoom = 100.0f;
+
+		{
+			b3BodyDef bd;
+			b3Body* ground = m_world.CreateBody(bd);
+
+			b3HullShape hs;
+			hs.m_hull = &m_groundHull;
+
+			b3ShapeDef sd;
+			sd.shape = &hs;
+
+			ground->CreateShape(sd);
+		}
+
+		b3Vec3 boxSize;
+		boxSize.Set(2.0f, 2.0f, 2.0f);
+
+		// shift to ground center
+		b3Vec3 translation;
+		translation.x = -0.5f * float32(e_count - 1) * 4.0f * boxSize.x;
+		translation.y = 1.5f * boxSize.y;
+		translation.z = -0.5f * float32(e_depthCount) * boxSize.z;
+		
+		for (u32 i = 0; i < e_count; ++i)
+		{
+			// reset 
+			translation.y = 1.5f * boxSize.y;
+			translation.z = -0.5f * float32(e_depthCount) * boxSize.z;
+
+			for (u32 j = 0; j < e_depthCount; ++j)
+			{
+				for (u32 k = j; k < e_depthCount; ++k)
+				{
+					b3BodyDef bd;
+					bd.type = e_dynamicBody;
+					bd.position.x = 0.0f;
+					bd.position.y = 0.0f;
+					bd.position.z = 1.05f * float32(k) * boxSize.z;
+					bd.position += translation;
+
+					b3Body* body = m_world.CreateBody(bd);
+
+					b3HullShape hs;
+					hs.m_hull = &m_boxHull;
+
+					b3ShapeDef sd;
+					sd.shape = &hs;
+					sd.density = 0.5f;
+					sd.friction = 0.5f;
+
+					body->CreateShape(sd);
+				}
+
+				// increment column
+				translation.y += 1.5f * boxSize.y;
+				// track offset
+				translation.z -= 0.5f * boxSize.z;
+			}
+
+			// increment row
+			translation.x += 4.0f * boxSize.x;
+		}
+	}
+
+	static Test* Create()
+	{
+		return new Pyramids();
+	}
+};
+
+#endif