Nazara first example

#include <Nazara/Graphics.hpp>
#include <Nazara/Renderer.hpp>
#include <Nazara/Utility.hpp>
#include <NDK/Application.hpp>
#include <NDK/Components.hpp>
#include <NDK/Systems.hpp>
#include <NDK/World.hpp>
#include <iostream>

int main()
{
    Ndk::Application application;

    Nz::RenderWindow& mainWindow = application.AddWindow<Nz::RenderWindow>();
    mainWindow.Create(Nz::VideoMode(800, 600, 32), "Test");

    Ndk::World& world = application.AddWorld();
    world.GetSystem<Ndk::RenderSystem>().SetGlobalUp(Nz::Vector3f::Down());

    Nz::TextSpriteRef textSprite = Nz::TextSprite::New();
    textSprite->Update(Nz::SimpleTextDrawer::Draw("Hello world !", 72));

    Nz::Boxf textSize = textSprite->GetBoundingVolume().obb.localBox;

    Ndk::EntityHandle text = world.CreateEntity();
    Ndk::NodeComponent& nodeComponent = text->AddComponent<Ndk::NodeComponent>();
    nodeComponent.SetPosition(mainWindow.GetWidth() / 2 - textSize.width / 2, mainWindow.GetHeight() / 2 - textSize.height / 2);

    Ndk::GraphicsComponent& graphicsComponent = text->AddComponent<Ndk::GraphicsComponent>();
    graphicsComponent.Attach(textSprite);

    Ndk::EntityHandle viewEntity = world.CreateEntity();
    viewEntity->AddComponent<Ndk::NodeComponent>();

    Ndk::CameraComponent& viewer = viewEntity->AddComponent<Ndk::CameraComponent>();
    viewer.SetTarget(&mainWindow);
    viewer.SetProjectionType(Nz::ProjectionType_Orthogonal);

    while (application.Run())
    {
        Nz::WindowEvent event;
        while (mainWindow.PollEvent(&event))
        {
            if (event.type == Nz::WindowEventType_Quit)
                Ndk::Application::Instance()->Quit();
        }

        mainWindow.Display();
    }

    return EXIT_SUCCESS;
}