public void removeDeadBodies() {
		for (int i = rigidBodies.size() - 1; i >= 0; i--) {
			RigidBody rigidBody = rigidBodies.get(i);
			if (rigidBody.getLifeTime() > 0
					&& rigidBody.getAge() > rigidBody.getLifeTime()) {
				physicsController.removeRigidBody(rigidBody);
				graphicsController.removeRigidBody(rigidBody);
				rigidBodies.remove(rigidBody);
			}
		}
	}