text: import os
  filesStr = "\
  	R.js \
  	mapData.js \
  	js/Floor.js \
  	js/Player.js \
  	js/YellowBall.js \
  	js/Snail.js \
  	js/Spider.js \
  	js/Fish.js \
  	js/Bat.js \
  	js/Spring.js \
  	js/Map.js \
  	js/InstanceFactory.js \
  	js/main.js"
  
  os.system("uglifyjs " +  filesStr +
  	" -o game.min.js" + 
  	" --source-map game.min.js.map" +
  	" --source-map-root ./" +
  	" -c -m"
  )
  if os.name == "nt":
  	os.system("pause")