View difference between Paste ID: TSzsjM9b and ti3HtWk4

 local tArgs = { ... }
-if #tArgs ~= 2 then
+if #tArgs ~= 1 then
-	print( "Usage: bridge <length> <direction of landmark (L, R, B)>" )
+	print( "Usage: quarry size <length>" )
     print( "Place blocks in slots 1 - 14, place landmarks in 16" )
 	return
 end
 
 -- Set length with user input
 local length = tonumber( tArgs[1] )
-	print( "Bridge length must be positive" )
+
 	print( "Side length must be positive" )
 	return
 end
--- Check that there are <length>
+local curSlot = 1
--- blocks provided in slot 9
+
---local numblocks = turtle.getItemCount(9)
+    if not (turtle.detectDown()) then
---if numblocks < length then
+        while turtle.getItemCount(curSlot) == 0 and curSlot < 16 do
---	print("Please place at least "..length.." building blocks in slot 9")
+        	curSlot = curSlot + 1
---	return
+		end
---end
+        turtle.select(curSlot)
         turtle.placeDown()
--- Place a block underneath
+
--- the turtle to build bridge
+
 
-	if not (turtle.detectDown()) then
+
-		turtle.select(9)
+function placelmf()
-		turtle.placeDown()
+    if not (turtle.detect()) then
 	    putblockdown()
         turtle.back()
       	turtle.select(16)
         turtle.place()
-function placelm()
+
-    if tArgs[2] == "R" then
+
-        if not (turtle.detect()) then
+
-        	turtle.turnRight()
+-- Place Landmark left and right
-            turtle.forward()
+function placelmb()
-            turtle.select(9)
+    if not (turtle.detect()) then
-		    turtle.placeDown()
+        turtle.turnRight()
-            turtle.back()
+        turtle.forward()
-          	turtle.select(10)
+		putblockdown()
-            turtle.place()
+        turtle.back()
-            turtle.turnLeft()
+      	turtle.select(16)
-        end
+        turtle.place()
         turtle.turnLeft()
-if tArgs[2] == "L" then
+        turtle.turnLeft()
-        if not (turtle.detect()) then
+        turtle.forward()
-        	turtle.turnLeft()
+		putblockdown()
-            turtle.forward()
+        turtle.back()
-            turtle.select(9)
+      	turtle.select(16)
-		    turtle.placeDown()
+        turtle.place()
-            turtle.back()
+        turtle.turnRight()
-          	turtle.select(10)
+
-            turtle.place()
+
-            turtle.turnRight()
+
-        end
+
     x = length
-if tArgs[2] == "B" then
+
-        if not (turtle.detect()) then
+
-        	turtle.turnRight()
+
-            turtle.forward()
+
-            turtle.select(9)
+
-		    turtle.placeDown()
+
-            turtle.back()
+
-          	turtle.select(10)
+
-            turtle.place()
+
-            turtle.turnLeft()
+
-            turtle.turnLeft()
+
-            turtle.forward()
+
-            turtle.select(9)
+
-		    turtle.placeDown()
+placelmf()
-            turtle.back()
+
-          	turtle.select(10)
+turtle.turnLeft()
-            turtle.place()
+
-            turtle.turnRight()
+
-        end
+
     putblockdown()
     turtle.forward()
     i = i + 1
 end
 
 placelmb()
 backhome()
 turtle.turnLeft()
 turtle.forward()
 
 local i = 0
 while i < length do
--- and build a bridge with
+
--- blocks provided in slot 9
+
 end
 
 placelmf()
 backhome()
 
 -- That's all, folks!
 print("Quarry setup")
-placelm()
+