(NDK) Added Velocity component/system

Former-commit-id: 427b7175fbf9723fcd1d54fc279b8b70167745d4

SDK/include/NDK/Components/VelocityComponent.inl

@@ -0,0 +1,20 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
+
+#include <Nazara/Core/Error.hpp>
+#include <NDK/Entity.hpp>
+
+namespace Ndk
+{
+	inline VelocityComponent::VelocityComponent(const NzVector3f& velocity) :
+	linearVelocity(velocity)
+	{
+	}
+
+	inline VelocityComponent& VelocityComponent::operator=(const NzVector3f& vel)
+	{
+		linearVelocity = vel;
+		return *this;
+	}
+}