public Bille(Environnement env, int numero) {
super(env, 0, 0);
Random random = new Random();
this.x = random.nextInt(env.getTailleX());
this.y = random.nextInt(env.getTailleY());
this.couleur = randomColor();
this.numero = numero;
// this.vitesse = random.nextInt(9) + 1; //retirer le 0
this.vitesse = 1;
this.sens = random.nextInt(7) + 1;
}