 BLOCKS_WIDE = 23
 BLOCKS_HIGH = 15
 
+MOUSE_ALPHA_VELOCITY = 3
+
 log = ->
   console.log.apply console, arguments
 

    return unless @_state is STATE_GAME

    @_countDown -= dt

    if 0 >= @_countDown
      @setState STATE_END

        ix = @x2index @_mouseX
        iy = @y2index @_mouseY

        if not @_board[iy][ix]? and @_mouseAlpha > 0
          x = MARGIN_LEFT + BLOCK_SIZE + (ix * BLOCK_SIZE)
          y = MARGIN_TOP + BLOCK_SIZE + (iy * BLOCK_SIZE)
          c.fillStyle = "rgba(204,204,204,#{@_mouseAlpha})"
          c.fillRect x + 1, y + 1, BLOCK_SIZE - 2, BLOCK_SIZE - 2

      # Draw count-down
