import traceback
import StringIO

from time import sleep

done = False
imported = False
loadBroken = False
runBroken = False


def genTraceback(ErrString):
    """ Takes an error message as an arguemnt.
        Generates a traceback of the most recent
        exception, and prints it with the error
        message.  Sleeps for 2 seconds before
        returning.
    """
    fp = StringIO.StringIO()
    traceback.print_exc(file=fp)
    message = fp.getvalue()
    
    print ErrString,"\n", message
    print "\nFix livegame.py to continue.\n"

    sleep(2) 
    

# loop until we sucessfully import livegame.py
while not imported:
    try:
        import livegame
    except:
        if not loadBroken:
            genTraceback("Failed to import livegame.py.")
            # set a flag so that the traceback is only printed
            # once
            loadBroken = True
    else:
        imported = True

# loop until livegame.play() returns True
while not done:

    # attempt to reload the code
    try:
        reload (livegame)
    except:
        # if the reload fails, print the traceback once.
        if not loadBroken:
            genTraceback("livegame.py is broken.")
            loadBroken = True
            
    else:
        loadBroken = False
        
        # if the reload is succesful, try to run livegame.play()
        try:    
            done = livegame.play()
        except:
            if not runBroken:
                genTraceback("play() in livegame.py is broken.")
                runBroken = True
                
        else:
            runBroken = False