Ruby study for Matsue(Japan) junior high school before afternoon.

gistfile1.rb

----- main.rb
require 'dxruby'
require './player'

player = Player.new

Window.loop do
  break if Input.keyPush?(K_ESCAPE)

  player.move
  player.draw
end

----- player.rb
class Player
  def initialize
    @player_img = Image.load("player.png")
    @x = 100
    @y = 50

    @right_end = Window.width - @player_img.width
    @bottom_end = Window.height - @player_img.height
  end

  def move
    @x += Input.x
    @y += Input.y

    @x = 0 if @x < 0
    @y = 0 if @y < 0
    @x = @right_end if @x > @right_end
    @y = @bottom_end if @y > @bottom_end
  end

  def draw
    Window.draw(@x, @y, @player_img)
  end
end

----- to run
run cmd.exe
> cd path¥to¥dir_include_main.rb
> ruby main.rb