/**
* Erzeugt ein Neues Gameplay,
*/
private void startNewGame() {
// 3 menschliche Spieler erstellen
Player player1 = new Human(true, "white");
Player player2 = new Human(true, "brown");
Player player3 = new Human(true, "black");
// Gameplay erzeugen
Gameplay gameplay = new Gameplay(player1, player2, player3, gui);
gui.setGameplay(gameplay);
}