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a guest Dec 9th, 2019 79 Never
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  1. local C1 = peripheral.wrap("obsidian_0")
  2. local m = peripheral.wrap("top")
  3. local itemList = { }        --# place this at or near the beginning of your code
  4.  
  5. local function drawScreen() --# place this *before* any calls to this function
  6.   m.setBackgroundColor(colors.red)
  7.   m.clear()
  8.   local tmpY = 1
  9.   m.setCursorPos(1,tmpY)
  10.   for i = 1, #itemList do
  11.     m.write(itemList[i].name .. "  QTY: " .. tostring(itemList[i].qty))
  12.     tmpY = tmpY + 1
  13.     m.setCursorPos(1,tmpY)
  14.   end
  15. end
  16.  
  17. function CheckItems()
  18.   itemList = { }
  19.   local InvSize = C1.getInventorySize()
  20.   for CurrSlot = 1, InvSize-1 do --Checking slots
  21.     local slot = C1.getStackInSlot(CurrSlot)
  22.     if slot ~= nil then -- Slots with stuff in them
  23.       local match = false
  24.       if #itemList == 0 then --# if there are no entries yet, add the first one
  25.         itemList[1] = { name = slot.name }
  26.         itemList[1].slots = { }
  27.         itemList[1].slots[1] = { slot = CurrSlot }
  28.         itemList[1].slots[1].qty = slot.qty
  29.         itemList[1].qty = slot.qty
  30.       else
  31.         for i = 1, #itemList do                 --# cycle through the master item list
  32.           if slot.name == itemList[i].name then --# if the new item's name matches the name of item [i] in the master list then update the info
  33.             itemList[i].slots[#itemList[i].slots+1] = { }
  34.             itemList[i].slots[#itemList[i].slots] = { slot = CurrSlot }
  35.             itemList[i].slots[#itemList[i].slots].qty = slot.qty
  36.             itemList[i].qty = itemList[i].qty + slot.qty
  37.             match = true
  38.             break
  39.           end
  40.         end
  41.         if not match then --# if the item isn't already in the list, add it
  42.           itemList[#itemList+1] = { name = slot.name }
  43.           itemList[#itemList].slots = { }
  44.           itemList[#itemList].slots[1] = { slot = CurrSlot }
  45.           itemList[#itemList].slots[1].qty = slot.qty
  46.           itemList[#itemList].qty = slot.qty
  47.         end
  48.       end
  49.     end
  50.   end
  51. end
  52.  
  53. CheckItems()
  54. drawScreen()
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