# File: curses2.py
#
# In this example, the while loop
# continues to execute even if the
# user does not press any keys on the
# keyboard.
#

import curses

# Import the time module for the sleep() function.
import time

print("Press arrow keys, or 'q' to quit.")
input("Press enter to continue.")

# start curses
stdscr = curses.initscr()

# don't print to screen
curses.noecho()

# don't wait for 'enter' to be pressed
curses.cbreak()

# map special keys to curses constants
stdscr.keypad(1)

# don't wait for keypress
stdscr.nodelay(True)


done = False
while not done:

   # get a character
   c = stdscr.getch()

   if c == curses.KEY_LEFT :
      print("left\r")

   elif c == curses.KEY_RIGHT :
      print("right\r")

   elif c == curses.KEY_UP :
      print("up\r")

   elif c == curses.KEY_DOWN :
      print("down\r")

   elif c == ord('q'):
      done = True

   else:
      print(".\r")

   # wait for 0.2 seconds
   time.sleep(.2)

# end of while not done


# restore things to normal
stdscr.nodelay(False)
stdscr.keypad(0)
curses.nocbreak()
curses.echo()
curses.endwin()