hide the button if no terrain there
hide the button if no terrain there

ghariman/atc,tedrek/atc,erikquinn/atc,jpeterson1346/atc,culebron/atc,tedrek/atc,glangford/atc,jpeterson1346/atc,deepkw/deepkw.github.io,ghariman/atc,deepkw/deepkw.github.io,tedrek/atc,erikquinn/atc,luznicky/atc,deepkw/deepkw.github.io,glangford/atc,luznicky/atc,luznicky/atc,erikquinn/atc,harp71/atc,harp71/atc,ghariman/atc,jpeterson1346/atc,culebron/atc,harp71/atc