 
     @VELOCITY = 0.1
 
+    @use_collisions = true
 
     constructor: ->
       @players = []

    getCurrentLines: ->
      p.currentLine() for p in @players

    timer_tick: ->
      new_time = SynchronizedTime.getTime()
      elapsed_time = new_time - @old_time

        else if lastpos.direction == Game.NORTH
          player.addToLine(new Position([lastpos.x, lastpos.y - (Game.VELOCITY * elapsed_time)], Game.NORTH, new_time))

        @handle_collisions(player) if Game.use_collisions

      @old_time = new_time

    addListener: (listener) ->
