script to switch out heroes chronicles data (tarnum graphics) in a homm 3 installation

tarnum.rb

#!/usr/bin/env ruby

FILES = %w[
  HPL003sh.pcx
  HPL004sh.pcx
  HPL006kn.pcx
  hpl007sh.pcx
  HPL102br.pcx
  hpl112bs.pcx
  HPS003sh.pcx
  HPS004sh.pcx
  HPS006kn.pcx
  hps007sh.pcx
  HPS102br.pcx
  hps112bs.pcx
]

BACKUP_DIR = __dir__ + '/Tarnum/'
LIVE_DIR   = __dir__ + '/Data/'

def move(files, from:, to:)
  files.each { |file| File.rename(from + file, to + file) }
end

if File.exist?(BACKUP_DIR + '/' + FILES.first)
  print 'Moving Tarnum files to LIVE dir ... '
  move(FILES, from: BACKUP_DIR, to: LIVE_DIR)
else
  print 'Moving Tarnum files to BACKUP dir ... '
  move(FILES, from: LIVE_DIR, to: BACKUP_DIR)
end

puts 'done!'