Question

Creating shell output for a game, but don’t want the window to scroll with each update of the game board. How to do it?

Working in Ruby.

Answer 1

Works well using the following. Does not use a gem.

require "curses"
include Curses

class Display
  def self.show board
    win = Window.new(20, 200, 0, 0) # 20 lines x 200 chars
    win.addstr board
    win.refresh
    win.close
  end

  def self.initialize
    crmode
    curs_set 0 # Hide cursor
    init_screen
  end
end

How to use:

Display.initialize

while true do
  Display.show board
  board.update # Or whatever the game needs to do...
end

Reference: http://www.ruby-doc.org/stdlib-1.9.3/libdoc/curses/rdoc/Curses.html