>
  endif<br>
 next z : next x<br>
 for w=1 to 4<br>
  if w=1 then sx=1000 : sz=50 : px=500 : pz=0<br>
  if w=2 then sx=1000 : sz=50 : px=500 : pz=1000<br>
  if w=3 then sx=50 : sz=1000 : px=0 : pz=500<br>
  if w=4 then sx=50 : sz=1000 : px=1000 : pz=500<br>
  make object box o,sx,200,sz : position object o,px,100,pz<br>
  make static object o,collision,Arbitraryvalue,shadow,portal : inc o<br>
 next w<br>
 for er=12 to 33 : delete static object er : next er<br>
 build static portals : delete light map light