WASD + 8-dir movement

wasd_movement.rb

# Title: WASD Movement
# Author: Hime
# Description: Allows you to use WASD keys for movement, with support for
# diagonal movement: http://himeworks.com/2014/11/eight-directional-movement/
#==============================================================================

module Input
  #--------------------------------------------------------------------------
  # alias method: self.dir4
  #--------------------------------------------------------------------------
  class << self
    alias :th_wasd_movement_dir4 :dir4
  end
  def self.dir4
    return 2 if Input.press?(:Y)
    return 4 if Input.press?(:X)
    return 6 if Input.press?(:Z)
    return 8 if Input.press?(:R)
    th_wasd_movement_dir4
  end

  class << self
    alias :th_wasd_movement_dir8 :dir8
  end
  def self.dir8
    return 1 if Input.press?(:Y) && Input.press?(:X)
    return 3 if Input.press?(:Y) && Input.press?(:Z)
    return 7 if Input.press?(:R) && Input.press?(:X)
    return 9 if Input.press?(:R) && Input.press?(:Z)
    th_wasd_movement_dir8
  end
end