#include <SFML/Graphics.hpp>

class Window {
public:
    Window();
    void run();
    static int r, g, b;
private:
    void update();
    void processEvents();
    void render();
private:
    sf::RenderWindow window;
    sf::Font font;
    sf::Text text;
};

Window::Window()
: window(sf::VideoMode(640, 480), "Meme, haha xDDDD")
, font()
, text("Get On My Level", font) {
    font.loadFromFile("arial.ttf");
    text.setCharacterSize(50);
    text.setColor(sf::Color(0, 0, 0));
}

void Window::processEvents() {
    sf::Event event;
    while(window.pollEvent(event)) {
        if (event.type==sf::Event::Closed)
            window.close();
    }
}

void Window::run() {
    while(window.isOpen()) {
        processEvents();
        update();
        render();
    }
}

void Window::update() {
    for (;r!=255&&g==0;r++)
        text.setColor(sf::Color(r, g, b));
    for (;g!=255&&b==0;g++)
        text.setColor(sf::Color(r, g, b));
    for (;r!=0&&g==255;r--)
        text.setColor(sf::Color(r, g, b));
    for (;b!=255&&g==255;b++)
        text.setColor(sf::Color(r, g, b));
    for (;g!=0&&b==255;g--)
        text.setColor(sf::Color(r, g, b));
}

void Window::render() {
    window.clear();
    window.draw(text);
    window.display();
}

int Window::r=0, Window::g=0, Window::b=0;

int main() {
    Window win;
    win.run();
    return 0;
}