Express relative distance between stations as decimal between 0 and 1…

… (instead of 0% to 100%).

lib/location-text.coffee

@@ -5,18 +5,18 @@ parse = (text) ->
 
   switch verb
     when 'At'
-      location.distancePercent = 0
+      location.relativeDistance = 0.0
       location.station = /At\s+(.*)\s+Platform.*/.exec(text)[1]
     when 'Left'
-      location.distancePercent = 25
+      location.relativeDistance = 0.25
       location.station = /Left\s+(.*)\s*/.exec(text)[1]
     when 'Between'
-      location.distancePercent = 50
+      location.relativeDistance = 0.5
       stations = /Between\s+(.*?)\s+and\s+(.*)\s*/.exec(text)
       location.station = stations[1]
       location.station2 = stations[2]
     when 'Approaching'
-      location.distancePercent = 75
+      location.relativeDistance = 0.75
     else
       location.station = text
 

test/location-text-test.coffee

@@ -4,15 +4,15 @@ exports.at = (test) ->
   location = locationText.parse 'At Stepney Green Platform 1'
 
   test.strictEqual 'Stepney Green', location.station
-  test.strictEqual 0, location.distancePercent
+  test.strictEqual 0, location.relativeDistance
 
   test.done()
 
 exports.left = (test) ->
   location = locationText.parse 'Left Tower Hill'
 
   test.strictEqual 'Tower Hill', location.station
-  test.strictEqual 25, location.distancePercent
+  test.strictEqual 0.25, location.relativeDistance
 
   test.done()
 
@@ -21,7 +21,7 @@ exports.between = (test) ->
 
   test.strictEqual 'Willesden Junction', location.station
   test.strictEqual 'Kensal Green', location.station2
-  test.strictEqual 50, location.distancePercent
+  test.strictEqual 0.5, location.relativeDistance
 
   test.done()
 
@@ -30,6 +30,6 @@ exports.betweenWithAnd = (test) ->
 
   test.strictEqual 'Lambeth', location.station
   test.strictEqual 'Elephant and Castle', location.station2
-  test.strictEqual 50, location.distancePercent
+  test.strictEqual 0.5, location.relativeDistance
 
   test.done()