View difference between Paste ID: csv5n2Un and eF0D625V

 local component = require("component");
 local robot_api = require("robot");
 local computer = require("computer");
 local sides = require("sides");
 
 local inventory = component.inventory_controller;
 --local robot = component.robot;
 local geolyzer = component.geolyzer;
 local redstone = component.redstone;
 
 local iron_scaffold = "ic2:scaffold";
 local foam = "ic2:foam";
 local reinforced_stone = "ic2:resource";
 local air = "minecraft:air";
 local sand = "minecraft:sand";
 
-local iron_scaffol_inventory_number = 3 +5;
+local iron_scaffol_inventory_number = 3;
-local reinforced_stone_inventory_number = 1;
+local reinforced_stone_inventory_number = 5;
-local sand_inventory_number = 4 +5;
+local sand_inventory_number = 4;
-local bore_inventory_number = 2 +5;
+local bore_inventory_number = 2;
-local spray_inventory_number = 1 +5;
+local spray_inventory_number = 1;
 
 local sand_slot = 4;
 local scaffold_slot = 7;
 local stone_slot = 1;
 
 local function isBlock(name)
 	local info_from_geolyzer = geolyzer.analyze(sides.forward);
     if (info_from_geolyzer.name == name)
         then return true
     else return false
 	end
 end
 
 local function placeIronScaffold()
     robot_api.select(iron_scaffol_inventory_number);
     result_of_placing = robot_api.place();
 	return result_of_placing;
 end
 
 local function foamTheScaffold()
     robot_api.select(spray_inventory_number);
 	inventory.equip();
     result_of_foaming = robot_api.use();
     inventory.equip();
     return result_of_foaming;
 end
 
 local function useSandOnFoam()
     robot_api.select(sand_inventory_number);
     inventory.equip();
     result_of_sanding = robot_api.use();
     inventory.equip();
     return result_of_sanding;
 end
 
 local function boreTheStone()
     robot_api.select(bore_inventory_number);
 	inventory.equip();
     result = robot_api.swing();
     inventory.equip();
     return result;
 end
 
 local function refuelSprayer()
-    print("spray_refuel");
+	print("refuel sprayer");
     robot_api.select(spray_inventory_number);
     inventory.dropIntoSlot(sides.up, 1);
-    robot_api.turnAround();
+	os.sleep(4);
-    robot_api.use();
+    robot_api.suckUp();
-    robot_api.turnAround();
+
 
 local function isEnergyBelow30Procent()
     local max_energy = computer.maxEnergy();
     local current_energy = computer.energy();
     local current_energy_in_procents = (current_energy * 100) / max_energy;
     return current_energy_in_procents;
 end
 
 local function chargeUp()
     redstone.setOutput(sides.right, 15);
     while (true) do
             os.sleep(2);
             if (computer.energy() >= (computer.maxEnergy()*0.9)) then break; end;
     end
     redstone.setOutput(sides.right, 0);
 end
 
 local function takeSandAndScaffoldFromExternalInventory()
     robot_api.select(sand_inventory_number);
     if (inventory.suckFromSlot(sides.down, sand_slot) == false) then print("There is no sand in external inventory!"); end;
     robot_api.select(iron_scaffol_inventory_number);
-    inventory.suckFromSlot(sides.down, sand_slot);
+    if (inventory.suckFromSlot(sides.down, scaffold_slot) == false) then print("There is no iron scaffold in external inventory!"); end;
 end
-    inventory.suckFromSlot(sides.down, scaffold_slot);
+
 local function isOutOfMaterials()
         robot_api.select(sand_inventory_number);
         local stack = inventory.getStackInInternalSlot();
 		if (stack == nil)
 			then return true;
 			end;
         local size = stack.size;
         if (size <= 0) then return true; end;
         return false;
 end
 
 local function isStoneFull()
         robot_api.select(reinforced_stone_inventory_number);
 		local stack = inventory.getStackInInternalSlot();
 		if (stack == nil)
 			then return false;
 			end;
         local size = stack.size;
 		print("I have ", size, " stone");
         if (size >= 5) then return true; end;
-        if (size >= 1) then return true; end;
+
 end
 
 local function getRidOfStone()
         robot_api.select(reinforced_stone_inventory_number);
-  		for i=1, 8, 1
+        inventory.dropIntoSlot(sides.down, stone_slot, 5);
-    	do
+    	print("Get rid of stone.");
-        	local item = inventory.getStackInInternalSlot(i);
+
-        	if (item)
+
-            then
+
-            	if (item.name == reinforced_stone)
+
-                then
+
-                	inventory.dropIntoSlot(sides.down, stone_slot);
+
-            	end;
+
-        	end;
+
-        end;
+
         if (isOutOfMaterials() == true)
              then takeSandAndScaffoldFromExternalInventory();
              end;
         if (isStoneFull() == true)
              then getRidOfStone();
              end;
         if (remaining_foam <= 40)
             then
 			   print(remaining_foam);
                refuelSprayer();
 			   remaining_foam = 80;
             end;
-
+
-        if (remaining_foam <= 0)
+
              end;
-               print(remaining_foam);
+
              then
                 if (foamTheScaffold() == true)
-               getRidOfStone();
+
-               inventory.equip();
+
-               getRidOfStone();
+
-               inventory.equip();
+
              end;
-
+
-        robot_api.select(iron_scaffol_inventory_number);
+
-
+
         if (isBlock(reinforced_stone) == true)
              then boreTheStone();
              end;
     end;
 end;
 
 main();
 --refuelSprayer();