Quellen:
https://www.toptal.com/game/ultimate-guide-to-processing-simple-gamehttp://michaelkipp.de/processing/index.html#toc-prog1
https://learn.microsoft.com/de-de/training/modules/get-started-with-web-development/4-css-basics
https://processing.org/examples/backgroundimage.html
https://processing.org/
