added sort_items and code cleanup

Modules/modules.lua

@@ -1,6 +1,7 @@
 --[[Function Module program by Al Sweigart
 Provides useful utility functions.]]
 
+
 -- selectItem() selects the inventory
 -- slot with the named item, returns
 -- true if found and false if not
@@ -25,7 +26,7 @@ end
 function select_emptySlot()
 
   -- loop through all slots
-  for slot = 1, 16 do  
+  for slot = 1, 16 do
     if turtle.getItemCount(slot) == 0 then
       turtle.select(slot)
       return true
@@ -34,6 +35,7 @@ function select_emptySlot()
   return false -- couldn't find empty space
 end
 
+
 -- countInventory() returns the total
 -- number of a given minecraft id item in the inventory
 function count_inventory(minecraft_id, times)
@@ -48,6 +50,7 @@ function count_inventory(minecraft_id, times)
   return total
 end
 
+
 -- selectAndPlaceDown() selects a slot with given
 -- minecraft id and places a block from it under the turtle
 function select_and_place_down(minecraft_id)
@@ -107,6 +110,7 @@ function build_wall(length, height)
   return true
 end
 
+
 -- build_room() constructs four walls
 -- and a ceiling
 function build_room(length, width, height)
@@ -131,6 +135,7 @@ function build_room(length, width, height)
   return true
 end
 
+
 -- sweepField() moves acress the rows
 -- and columns of an area in front and
 -- to the right of the turtle, calling
@@ -148,7 +153,7 @@ function sweepField(length, width, sweepFunc)
       end
     end
 
-  
+
     -- don't turn on the last column
     if x ~= width then
       -- turn to the next column
@@ -181,6 +186,7 @@ function sweepField(length, width, sweepFunc)
   return true
 end
 
+
 --findBlock() spins around searching
 --for the named block next to the turtle
 function findBlock(name)
@@ -196,7 +202,8 @@ function findBlock(name)
   return false
 end
 
--- puke() puke everything that is in the turtles 
+
+-- puke() puke everything that is in the turtles
 -- inventory out in front of it (hopefully there is
 -- a chest
 function puke()
@@ -206,6 +213,7 @@ function puke()
   end
 end
 
+
 -- Check Fuel checks if the turtle has enough fuel.
 -- if not, it asks for fuel in slot 1 and refuels.
 function check_fuel()
@@ -221,3 +229,20 @@ function check_fuel()
     end
   end
 end
+
+-- sort_items() stacks all items of the same ID
+-- into one stack
+function sort_items()
+    for i = 1, 16 do
+        turtle.select(i)
+        item1 = turtle.getItemDetail()
+        for j = i+1, 16 do
+            item2 = turtle.getItemDetail(j)
+            if item1 ~= nil and item2 ~= nil and item1['name'] == item2['name'] then
+                turtle.select(j)
+                turtle.transferTo(i)
+            end
+        end
+    end
+
+end