private void setupKeys() {
        inputManager.addMapping("Lefts", new KeyTrigger(KeyInput.KEY_A));
        inputManager.addMapping("Rights", new KeyTrigger(KeyInput.KEY_D));
        inputManager.addMapping("Ups", new KeyTrigger(KeyInput.KEY_W));
        inputManager.addMapping("Downs", new KeyTrigger(KeyInput.KEY_S));
        inputManager.addMapping("Space", new KeyTrigger(KeyInput.KEY_SPACE));
        inputManager.addMapping("Reset", new KeyTrigger(KeyInput.KEY_RETURN));
        inputManager.addListener(this, "Lefts");
        inputManager.addListener(this, "Rights");
        inputManager.addListener(this, "Ups");
        inputManager.addListener(this, "Downs");
        inputManager.addListener(this, "Space");
        inputManager.addListener(this, "Reset");
    }
initial orientation of the tank (in world/physics-space coordinates)
jme3-examples/src/main/java/jme3test/bullet/TestHoveringTank.java