Push the current work on the Physics2D module

src/Nazara/Physics2D/PhysWorld2D.cpp

@@ -0,0 +1,60 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Physics 3D module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Physics2D/PhysWorld2D.hpp>
+#include <chipmunk/chipmunk.h>
+#include <Nazara/Physics2D/Debug.hpp>
+
+namespace Nz
+{
+	PhysWorld2D::PhysWorld2D() :
+	m_stepSize(0.005f),
+	m_timestepAccumulator(0.f)
+	{
+		m_handle = cpSpaceNew();
+		cpSpaceSetUserData(m_handle, this);
+	}
+
+	PhysWorld2D::~PhysWorld2D()
+	{
+		cpSpaceFree(m_handle);
+	}
+
+	Vector2f PhysWorld2D::GetGravity() const
+	{
+		cpVect gravity = cpSpaceGetGravity(m_handle);
+		return Vector2f(gravity.x, gravity.y);
+	}
+
+	cpSpace* PhysWorld2D::GetHandle() const
+	{
+		return m_handle;
+	}
+
+	float PhysWorld2D::GetStepSize() const
+	{
+		return m_stepSize;
+	}
+
+	void PhysWorld2D::SetGravity(const Vector2f& gravity)
+	{
+		cpSpaceSetGravity(m_handle, cpv(gravity.x, gravity.y));
+	}
+
+	void PhysWorld2D::SetStepSize(float stepSize)
+	{
+		m_stepSize = stepSize;
+	}
+
+	void PhysWorld2D::Step(float timestep)
+	{
+		m_timestepAccumulator += timestep;
+
+		while (m_timestepAccumulator >= m_stepSize)
+		{
+			cpSpaceStep(m_handle, m_stepSize);
+			m_timestepAccumulator -= m_stepSize;
+		}
+	}
+}