@Override
    public void setEnabled(boolean enabled) {
        this.enabled = enabled;
        if (space != null) {
            if (enabled && !added) {
                if (spatial != null) {
                    setPhysicsLocation(getSpatialTranslation());
                    setPhysicsRotation(getSpatialRotation());
                }
                addPhysics(space);
                added = true;
            } else if (!enabled && added) {
                removePhysics(space);
                added = false;
            }
        }
    }
Enable or disable this control.
<p>
When the control is disabled, the physics object is removed from physics
space. When the control is enabled again, the physics object is moved to
the spatial's location and then added to the physics space.

@param enabled true&rarr;enable the control, false&rarr;disable it
jme3-jbullet/src/main/java/com/jme3/bullet/control/AbstractPhysicsControl.java