Vertex declaration changes (#135)

* Add type to ComponentType conversion

* Change type to ComponentType conversion

* Change assert to condition, add check on particle mapper.

* Change particle life type

* Changes as requested

* Fix Travis try 1

* Changes as requested

* move IsSuitableForComponent to inl

src/Nazara/Utility/VertexDeclaration.cpp

@@ -1,4 +1,4 @@
-// Copyright (C) 2017 Jérôme Leclercq
+// Copyright (C) 2017 Jérôme Leclercq
 // This file is part of the "Nazara Engine - Utility module"
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
@@ -120,6 +120,15 @@ namespace Nz
 			*offset = vertexComponent.offset;
 	}
 
+	bool VertexDeclaration::HasComponent(VertexComponent component) const
+	{
+		bool enabled;
+
+		GetComponent(component, &enabled, nullptr, nullptr);
+
+		return enabled;
+	}
+
 	std::size_t VertexDeclaration::GetStride() const
 	{
 		return m_stride;