add more output

lava-collector

@@ -6,6 +6,7 @@ local function compareItemName(target)
     if itemDetail == nil then
         return nil
     end
+    print('item name: ' .. itemDetail.name)
     return itemDetail.name == target
 end
 
@@ -19,8 +20,9 @@ end
 
 local function findFirstEmptyBucket()
     for i=1,16 do
+        print('Testing slot for empty bucket: ' .. i)
         if isEmptyBucket() then
-            print('Slot' .. i .. 'is an empty bucket')
+            print('Found an empty bucket in slot ' .. i)
             return i
         end
     end
@@ -30,8 +32,9 @@ end
 local function findFirstLavaBucket()
     for i=1,16 do
         turtle.select(i)
+        print('Testing slot for lava bucket: ' .. i)
         if isLavaBucket() then
-            print('Slot' .. i .. 'is an lava bucket')
+            print('Found a lava bucket in slot ' .. i)
             return i
         end
     end
@@ -48,11 +51,12 @@ end
 local function refuel()
     local lava_bucket = findFirstLavaBucket()
     if lava_bucket == nil then
-        return nil
+        return false
     end
 
     turtle.select(lava_bucket)
     turtle.refuel()
+    return true
 end
 
 
@@ -60,7 +64,7 @@ ForwardCounter = 0
 
 while true do
     if turtle.getFuelLevel() < 1000 then
-        if refuel() == nil then
+        if not refuel() then
             print('refulling failed. probably the end of the lava lake. returning to base')
             returnToBase()
             break