MapView: remove ready argument

src/app.coffee

@@ -14,7 +14,7 @@ window.onload = ->
         xhr = new XMLHttpRequest()
         xhr.onload = ->
                 mapDef = new Map(JSON.parse this.responseText)
-                mapView = new MapView mapDef, ->
+                mapView = new MapView mapDef
 
         xhr.open 'GET', 'resources/map/test.json', true
         xhr.send()

src/view/MapView.coffee

@@ -24,7 +24,7 @@ loadTiles = (tileDef) ->
 
 
 class MapView
-        constructor: (@map, ready) ->
+        constructor: (@map) ->
                 @redrawPending = false
 
                 @canvas = document.createElement 'canvas'
@@ -36,10 +36,10 @@ class MapView
                 window.addEventListener 'resize', @setSize
                 @setSize()
 
-                loadTiles(@map.tiles).then (tiles) =>
+                @ready = loadTiles(@map.tiles).then (tiles) =>
                         @tiles = tiles
                         @redraw()
-                        ready()
+                        return
 
         drawTile: (x, y, tile) =>
                 return unless tile