103 lines
3.4 KiB
Python
103 lines
3.4 KiB
Python
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from direct.showbase.DirectObject import DirectObject
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from direct.directnotify.DirectNotifyGlobal import directNotify
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class DistributedObjectBase(DirectObject):
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"""
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The Distributed Object class is the base class for all network based
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(i.e. distributed) objects. These will usually (always?) have a
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dclass entry in a *.dc file.
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"""
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notify = directNotify.newCategory("DistributedObjectBase")
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def __init__(self, cr):
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assert self.notify.debugStateCall(self)
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self.cr = cr
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self.parentId = None
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self.zoneId = None
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if __debug__:
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def status(self, indent=0):
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"""
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print out "doId(parentId, zoneId) className"
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"""
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spaces = ' ' * (indent + 2)
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try:
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print("%s%s:" % (' ' * indent, self.__class__.__name__))
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print("%sfrom DistributedObject doId:%s, parent:%s, zone:%s" % (
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spaces, self.doId, self.parentId, self.zoneId))
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except Exception as e:
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print("%serror printing status %s" % (spaces, e))
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def getLocation(self):
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try:
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if self.parentId == 0 and self.zoneId == 0:
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return None
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# This is a -1 stuffed into a uint32
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if self.parentId == 0xffffffff and self.zoneId == 0xffffffff:
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return None
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return (self.parentId, self.zoneId)
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except AttributeError:
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return None
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def handleChildArrive(self, childObj, zoneId):
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"""
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A new child has just setLocation beneath us. Give us a
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chance to run code when a new child sets location to us. For
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example, we may want to scene graph reparent the child to
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some subnode we own.
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"""
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assert self.notify.debugCall()
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# Inheritors should override
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pass
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def handleChildArriveZone(self, childObj, zoneId):
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"""
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A child has just changed zones beneath us with setLocation.
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Give us a chance to run code when an existing child sets
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location to us. For example, we may want to scene graph
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reparent the child to some subnode we own.
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"""
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assert self.notify.debugCall()
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# Inheritors should override
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pass
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def handleChildLeave(self, childObj, zoneId):
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"""
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A child is about to setLocation away from us. Give us a
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chance to run code just before a child sets location away from us.
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"""
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assert self.notify.debugCall()
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# Inheritors should override
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pass
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def handleChildLeaveZone(self, childObj, zoneId):
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"""
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A child is about to setLocation to another zone beneath us.
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Give us a chance to run code just before a child sets
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location to that zone.
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"""
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assert self.notify.debugCall()
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# Inheritors should override
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pass
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def handleQueryObjectChildrenLocalDone(self, context):
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assert self.notify.debugCall()
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# Inheritors should override
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pass
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def getParentObj(self):
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if self.parentId is None:
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return None
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return self.cr.doId2do.get(self.parentId)
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def hasParentingRules(self):
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return self.dclass.getFieldByName('setParentingRules') != None
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def delete(self):
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"""
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Override this to handle cleanup right before this object
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gets deleted.
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"""
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pass
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