public void initTrainCrane() {
        for (int i = 0; i < 4; i++) {
            trainCranes[i] = new TrainCrane(assetManager);
            rootNode.attachChild(trainCranes[i]);
            trainCranes[i].setLocalTranslation(90f + (125f * i), 0, -199f);
        }
    }