mirror of
https://github.com/Sneed-Group/Poodletooth-iLand
synced 2024-12-25 20:52:26 -06:00
114 lines
3.6 KiB
Python
114 lines
3.6 KiB
Python
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from cPickle import dumps, loads
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from direct.directnotify import DirectNotifyGlobal
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from direct.distributed.PyDatagram import PyDatagram
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from direct.showbase.Messenger import Messenger
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class NetMessenger(Messenger):
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"""
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This works very much like the Messenger class except that messages
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are sent over the network and (possibly) handled (accepted) on a
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remote machine (server).
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"""
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notify = DirectNotifyGlobal.directNotify.newCategory('NetMessenger')
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def __init__(self, air, baseChannel=20000, baseMsgType=20000):
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"""
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air is the AI Repository.
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baseChannel is the channel that the first message is sent on.
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baseMsgType is the MsgType of the same.
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"""
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assert self.notify.debugCall()
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Messenger.__init__(self)
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self.air=air
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self.baseChannel = baseChannel
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self.baseMsgType = baseMsgType
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self.__message2type = {}
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self.__type2message = {}
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self.__message2channel = {}
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def clear(self):
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assert self.notify.debugCall()
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Messenger.clear(self)
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def register(self, code, message):
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assert self.notify.debugCall()
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channel = self.baseChannel + code
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msgType = self.baseMsgType + code
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if message in self.__message2type:
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self.notify.error('Tried to register message %s twice!' % message)
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return
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self.__message2type[message] = msgType
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self.__type2message[msgType] = message
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self.__message2channel[message] = channel
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def prepare(self, message, sentArgs=[]):
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"""
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Prepare the datagram that would get sent in order to send this message
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to its designated channel.
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"""
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assert self.notify.debugCall()
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# Make sure the message is registered:
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if message not in self.__message2type:
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self.notify.error('Tried to send unregistered message %s!' % message)
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return
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datagram = PyDatagram()
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# To:
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datagram.addUint8(1)
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datagram.addChannel(self.__message2channel[message])
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# From:
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datagram.addChannel(self.air.ourChannel)
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messageType=self.__message2type[message]
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datagram.addUint16(messageType)
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datagram.addString(str(dumps(sentArgs)))
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return datagram
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def accept(self, message, *args):
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if message not in self.__message2channel:
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self.notify.error('Tried to accept unregistered message %s!' % message)
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return
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anyAccepting = bool(self.whoAccepts(message))
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if not anyAccepting:
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self.air.registerForChannel(self.__message2channel[message])
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Messenger.accept(self, message, *args)
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def send(self, message, sentArgs=[]):
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"""
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Send message to anything that's listening for it.
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"""
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assert self.notify.debugCall()
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datagram = self.prepare(message, sentArgs)
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self.air.send(datagram)
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Messenger.send(self, message, sentArgs=sentArgs)
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def handle(self, msgType, di):
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"""
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Send data from the net on the local netMessenger.
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"""
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assert self.notify.debugCall()
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if msgType not in self.__type2message:
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self.notify.warning('Received unknown message: %d' % msgType)
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return
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message = self.__type2message[msgType]
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sentArgs=loads(di.getString())
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if type(sentArgs) != list:
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self.notify.warning('Received non-list item in %s message: %r' %
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(message, sentArgs))
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return
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Messenger.send(self, message, sentArgs=sentArgs)
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