double breite = obstacleScene.getBoundingBox().getWidth();
double hoehe = obstacleScene.getBoundingBox().getHeight();
for (int i = 0; i < 7; i++) {
obstacleScene.addCollidingAgent(
new PacmanGhostAgent(1, world, params),
new Vector2D(
rand.nextDouble() * breite - breite / 2,
rand.nextDouble() * hoehe - hoehe / 2),
rand.nextDouble() * 360,