Stretched Preroll Martingale

martingale with prerolling and stretched losses. After prerolling, multiply the bets after every x rolls.

chance=49.5
multiplier=2
base=0.00000100
preroll=5
prebet=0.00000001
stretch=3
function dobet()
 tmp = currentstreak+preroll
 if win then
  nextbet=prebet
 else
  if tmp == 0 then
   nextbet=base
  end
  if tmp < 0 then
   if tmp %stretch == 0 then
    nextbet=previousbet*multiplier
   end
  end
 end
end