FlappyTurtle/GameScreen.java

import java.util.List;
import java.util.ArrayList;

class GameScreen
{
    private final List<Drawable> _drawables;
    private final Bird _bird;
    private final Welt _welt;

    public GameScreen()
    {
        _drawables = new ArrayList<Drawable>();
        _bird = new Bird(this);
        _welt = new Welt(this);
    }

    public void update(double elapsed)
    {
        _bird.update(elapsed);
        _welt.update(elapsed);

        if (_welt.checkCollision(_bird.getRect()) ||
                _bird.getRect().getY() + _bird.getRect().getHeight() > TurtleWelt.HEIGHT)
        {
            _bird.reset();
            _welt.reset();
        }
    }


    public void draw(Turtle turtle, double elapsed)
    {
        TurtleWelt.globaleWelt.bildschirmEinfaerben(255, 255, 255);
        for (var d : _drawables)
        {
            d.draw(turtle, elapsed);
        }
    }

    public void addDrawable(Drawable d)
    {
        _drawables.add(d);
    }

    public void jump()
    {
        _bird.jump();
    }
}