fix monitor clearing

classic_tech/bigbrother.lua

@@ -9,10 +9,10 @@ end
 
 while true do
     local players = pl_detector.getOnlinePlayers()
+    mon.clear()
     for i, p in ipairs(players) do
         local pos = pl_detector.getPlayerPos(p)
         mon.setCursorPos(1, i)
-        mon.clear()
         if pos == nil then
             mon.write(p .. " @ ?")
         else