examples/bobbee.rb in lignite-0.2.0 vs examples/bobbee.rb in lignite-0.3.0

@@ -1,18 +1,18 @@
 #!/usr/bin/ruby
-# coding: utf-8
+
 # https://www.lego.com/mindstorms/build-a-robot/bobb3e
 # A Bobcat® like two-tracked forklift
 
 require "lignite"
 
 class Bobbee
   # @return [Lignite::Motors]
-  attr :drive
+  attr_reader :drive
   # @return [Lignite::Motors]
-  attr :lift
-  attr :dc
+  attr_reader :lift
+  attr_reader :dc
 
   def initialize(drive: Lignite::PORT_B | Lignite::PORT_C,
                  lift: Lignite::PORT_A,
                  dc: Lignite::DirectCommands.new)
     layer = 0
@@ -47,26 +47,26 @@
     lift.step_power(30, 10, LIFT_FULL - 20, 10)
     lift.ready if wait
   end
 
   def third_raise(wait: true)
-    lift.step_power(30, 10, LIFT_FULL/3 - 20, 10)
+    lift.step_power(30, 10, LIFT_FULL / 3 - 20, 10)
     lift.ready if wait
 
     beep
     sleep 3
   end
 
   def lower(wait: true)
-    lift.step_power(-1, 10, LIFT_FULL - 20, 10) #, Lignite::COAST)
+    lift.step_power(-1, 10, LIFT_FULL - 20, 10) # , Lignite::COAST)
     lift.ready if wait
 
     beep
     sleep 3
   end
 
   def third_lower(wait: true)
-    lift.step_power(-1, 10, LIFT_FULL/3 - 20, 10)
+    lift.step_power(-1, 10, LIFT_FULL / 3 - 20, 10)
     lift.ready if wait
   end
 
   def beep(ms = 300)
     dc.sound_tone(20, 1760, ms)