..

src/entities/tilelayer.coffee

@@ -2,7 +2,7 @@ class Tilelayer extends BaseEntity
   constructor: (options) ->
     {@type, @depth, @amount} = options
     @randomFactor = getRandomInt 0, 4
-    @sprite = [@randomFactor*8, @depth*8, @randomFactor*8+8, @depth*8+8]
+    @sprite = [@randomFactor*8, @depth*8, 8, 8]
 
   render: (layer, x, y) ->
     layer.drawRegion app.images.layers, @sprite, x*8, y*8

src/game.coffee

@@ -1,12 +1,14 @@
 app.game =
   start: ->
-    for i in [0..20*15]
+    for i in [0..20*15-1]
       @map[i] = new Tile
 
   render: ->
-    app.layer.save().scale(3, 3)
+    app.layer.save().scale(5, 5)
     for tile, i in @map
-      tile.render(i-(Math.floor(i/20)*20), Math.floor(i/20))
+      y = Math.floor(i/20)
+      x = i-(y*20)
+      tile.render(x, y)
     app.layer.restore()
     @hud.render()