Override fixnum for DSL...more like english

README.md

@@ -39,13 +39,13 @@ require 'rumba'
 
 Roomba.new('/dev/tty.usbserial') do
   safe_mode
-  forward meter(1)
+  forward 1.meter
   rotate :left
   rotate -90 # degrees
 
   rotate :right
   rotate 90
-  backward meter(1)
+  backward 1.meter
 
   # access to any methods in the Roomba class here!
 end

lib/rumba/dsl.rb

@@ -60,26 +60,28 @@ def rotate(direction, speed: DEFAULT_SPEED)
       halt
     end
 
-    # MEASUREMENT HELPERS
-    # TODO: break these out into separate helpers file?
-    def inches(num)
-      25.4 * num
-    end
-    alias_method :inch, :inches
-
-    def feet(num)
-      inches(num) * 12
-    end
-    alias_method :foot, :feet
-
-    def meters(num)
-      num * 1000
-    end
-    alias_method :meter, :meters
-
     # eh, why not?
     alias_method :forwards, :forward
     alias_method :backwards, :backward
     alias_method :turn, :rotate
   end
 end
+
+# MEASUREMENT HELPERS
+class Fixnum
+  def inches
+    25.4 * self
+  end
+  alias_method :inch, :inches
+
+  def feet
+    self.inches * 12
+  end
+  alias_method :foot, :feet
+
+  def meters
+    self * 1000
+  end
+  alias_method :meter, :meters
+end
+