View difference between Paste ID: qGsNGPDM and 4SP9WzSK

 ----Quarry Bot Redux----
 
 --Variables--
 
 t = turtle
 
 --Functions--
 
 function f()
 	if t.detect() then
 		t.dig()
 		t.forward()
 	else
 		t.forward()
 	end
 end
 function d()
 	if t.detectDown() then
 		t.digDown()
 		t.down()
 	else
 		t.down()
 	end
 end
 
 function refuel()
 	if t.getFuelLevel() == 0 then
 			pleaseRefuel()
 		end
 	end
 function store()
  if t.getItemCount(16) > 0 then
 		pleaseStore()
 	end
 end
 
 function pleaseRefuel()
  	t.select(1)
 	t.digUp()
 	t.placeUp()
 	t.suckUp()
 	t.refuel()
 	t.digUp()
 end
 function pleaseStore()
-  num = num + 1
+
 	t.digUp()
-  t.select(2)
+
 	num = 3
 	while num < 17 do
 		t.select(num)
 		t.dropUp()
 	num = num + 1
 	end
 	t.select(2)
 	t.digUp()
 end
 
-  dot = true
+
   refuel()
   store()
 end
 
-    z = z - 1
+function layer()
 	x = 16
-  if dot then
+
-		t.turnRight()
+	dot = true
-		f()
+
-		t.turnRight()
+
-  dot = not dot
+
-   else
+
-     t.turnLeft()
+			z = z - 1
-     if not (x == 2) then
+
-     f()
+		if dot then
-     end
+			t.turnRight()
-     t.turnLeft()
+			if not (x == 2) then
-     dot = not dot
+				f()
-     end
+			end
-   z = 16
+			t.turnRight()
-     x = x - 1
+			dot = not dot
 		else
 			t.turnLeft()
 			if not (x == 2) then
 				f()
-function downward()
+			end
 			t.turnLeft()
 			dot = not dot
 		end
-    quarry()
+		z = 16
 		x = x - 1
 	end
 	d()
-downward()
+
 
 function quarry()
   y = io.read()
   y = tonumber(y)
   while y > 0 do
     layer()
 	y = y - 1
   end
 end
 
 quarry()