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## $Id: eventmgr.py,v 1.2 2003/08/18 20:42:59 riq Exp $
##
## Tenes Empanadas Graciela
##
## Copyright (C) 2000,2003 Ricardo Quesada
##
## Author: Ricardo Calixto Quesada <riq@coresecurity.com>
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; only version 2 of the License
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
#
# class EventMgr based on sjbrown (http://sjbrown.ezide.com/writing-games.html)
#
import pygame
from weakref import WeakKeyDictionary
# TEG imports
from events import *
class EventMgr( object ):
def __init__(self ):
self.preControllers = []
self.controllers = []
self.listeners = []
self.postListeners = []
self._quit = 0
self.eventQueue = []
def registerController( self, controller ):
# controller should be a subclass of controllers.Controller
controller.setEventMgr( self )
self.controllers.append( controller )
def registerListener( self, listener ):
# listener should be a subclass of listeners.Listener
listener.setEventMgr( self )
self.listeners.append( listener )
def registerPostListener( self, postListener ):
self.postListeners.append( postListener )
def registerPreController( self, preController ):
self.preControllers.append( preController )
def post( self, event ):
self.eventQueue.append( event )
if isinstance(event, QuitEvent):
self._quit = 1
def loop( self ):
while( not self._quit ):
for preController in self.preControllers:
preController.update()
for ctrl in self.controllers:
self.eventQueue = self.eventQueue + ctrl.getEvents()
# copy events, since listener might 'post' some events and the
# controllers might not be called.
from copy import copy
evts = copy( self.eventQueue )
self.eventQueue = []
while len(evts) > 0:
ev = evts.pop(0)
for ob in self.listeners:
ob.notify( ev )
# some listener might handle the quit event.
if isinstance(ev, QuitEvent):
self._quit = 1
for postListener in self.postListeners:
postListener.update()
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