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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Demonstration of how L{twisted.internet._threadedselect} might be used (this is
not an example showing the best way to integrate Twisted with pygame).
"""
# import Twisted and install
from twisted.internet import _threadedselect
_threadedselect.install()
import pygame
from pygame.locals import *
from twisted.internet import reactor
try:
import pygame.fastevent as eventmodule
except ImportError:
import pygame.event as eventmodule
# You can customize this if you use your
# own events, but you must OBEY:
#
# USEREVENT <= TWISTEDEVENT < NUMEVENTS
#
TWISTEDEVENT = USEREVENT
def postTwistedEvent(func):
# if not using pygame.fastevent, this can explode if the queue
# fills up.. so that's bad. Use pygame.fastevent, in pygame CVS
# as of 2005-04-18.
eventmodule.post(eventmodule.Event(TWISTEDEVENT, iterateTwisted=func))
def helloWorld():
print("hello, world")
reactor.callLater(1, helloWorld)
reactor.callLater(1, helloWorld)
def twoSecondsPassed():
print("two seconds passed")
reactor.callLater(2, twoSecondsPassed)
def eventIterator():
while True:
yield eventmodule.wait()
while True:
event = eventmodule.poll()
if event.type == NOEVENT:
break
else:
yield event
def main():
pygame.init()
if hasattr(eventmodule, "init"):
eventmodule.init()
screen = pygame.display.set_mode((300, 300))
# send an event when twisted wants attention
reactor.interleave(postTwistedEvent)
# make shouldQuit a True value when it's safe to quit
# by appending a value to it. This ensures that
# Twisted gets to shut down properly.
shouldQuit = []
reactor.addSystemEventTrigger("after", "shutdown", shouldQuit.append, True)
for event in eventIterator():
if event.type == TWISTEDEVENT:
event.iterateTwisted()
if shouldQuit:
break
elif event.type == QUIT:
reactor.stop()
elif event.type == KEYDOWN and event.key == K_ESCAPE:
reactor.stop()
pygame.quit()
if __name__ == "__main__":
main()
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