View difference between Paste ID: 81AVhysL and 32ZsBV9B

 local y = 0
 local x = 0
 local z = 0
 local i = 0
 local a = 0
 local groesseX = 10
 local groesseY = 10
 local groesseZ = 30
 local richtung = false
 
 function fGRABEN()
   if turtle.detect()==true then
     turtle.dig()
   end
   turtle.forward()
 end
 
 function fSEITE()
   if richtung==true then
     turtle.turnRight()
     fGRABEN()
     turtle.turnRight()
     richtung = false
   else
     turtle.turnLeft()
     fGRABEN()
     turtle.turnLeft()
     richtung = true
   end
   y = y + 1
 end
 
-fKOHLE()
+function fKOHLE()
   if turtle.getFuelLevel()<=y + x + z then
     fBACK()
   else
     if fSTOCK() == true then
       fBACK()
     end
   end
 end
 
 function fSTOCK()
   for i=1,16 do
     if turtle.getItemCount(i)==0 then
       a = a + 1
     end
   end
   if a <= 11 then
     return true
   end
 end
 
 function fBACK()
   turtle.turnLeft()
   for b=1,y-1 do
     turtle.forward()
   end
   turtle.turnLeft()
   for b=1, 16 do
     turtle.select(b)
     turtle.drop()
   end
   turtle.turnRight()
   turtle.forward()
   turtle.forward()
   turtle.turnLeft()
   turtle.select(1)
   turtle.suck(64)
   turtle.turnRight()
   turtle.turnRight()
   for f=1,y do
     turtle.forward()
   end
 end
 
 function fMAIN()
   for j=1, groesseX do
     for i=1,groesseY do
       fGRABEN()
     end
     fSEITE()
     if y == 2 then
        y = 0
        fKOHLE()
     end
     x = x + 1
   end
 end