105 lines
2.4 KiB
Python
105 lines
2.4 KiB
Python
|
|
"""StateData module: contains StateData class"""
|
|
|
|
from DirectObject import *
|
|
|
|
import DirectNotifyGlobal
|
|
|
|
class StateData(DirectObject):
|
|
|
|
"""StateData class: """
|
|
|
|
notify = DirectNotifyGlobal.directNotify.newCategory('StateData')
|
|
|
|
def __init__(self, doneEvent):
|
|
"""__init__(self, Event)
|
|
"""
|
|
self.doneEvent = doneEvent
|
|
self.doneStatus = None
|
|
self.isLoaded = 0
|
|
self.isEntered = 0
|
|
return None
|
|
|
|
def enter(self):
|
|
"""enter(self)
|
|
|
|
Enters the StateData. This makes it active in whatever sense
|
|
this applies. Returns true if this is a change (i.e. it was
|
|
not previously entered), or false if this is the same (i.e. it
|
|
was already entered).
|
|
|
|
"""
|
|
if self.isEntered:
|
|
return 0
|
|
|
|
self.load()
|
|
self.isEntered = 1
|
|
self.notify.debug('enter()')
|
|
return 1
|
|
|
|
def exit(self):
|
|
"""exit(self)
|
|
|
|
Exits the StateData. Returns true if this is a change
|
|
(i.e. it was previously entered), or false if this is the same
|
|
(i.e. it was already exited).
|
|
"""
|
|
if not self.isEntered:
|
|
return 0
|
|
self.isEntered = 0
|
|
self.notify.debug('exit()')
|
|
return 1
|
|
|
|
def load(self):
|
|
"""load(self)
|
|
|
|
Loads the StateData. This loads whatever assets are needed
|
|
from disk, and otherwise prepares the StateData for being
|
|
entered, without actually entering it. Returns true if this
|
|
is a change (i.e. it was not already loaded), or false if this
|
|
is the same (i.e. it was previously loaded).
|
|
|
|
"""
|
|
if self.isLoaded:
|
|
return 0
|
|
|
|
self.isLoaded = 1
|
|
self.notify.debug('load()')
|
|
return 1
|
|
|
|
def unload(self):
|
|
"""unload(self)
|
|
|
|
Unloads the StateData. This frees whatever assets were loaded
|
|
by load(), and generally makes the memory usage for this thing
|
|
be as small as possible. Some StateData-derived classes can
|
|
load and unload repeatedly; others are useless once they have
|
|
been unloaded.
|
|
|
|
"""
|
|
if not self.isLoaded:
|
|
return 0
|
|
|
|
self.exit()
|
|
self.isLoaded = 0
|
|
self.notify.debug('unload()')
|
|
return 1
|
|
|
|
def getDoneStatus(self):
|
|
"""getDoneStatus(self)
|
|
"""
|
|
return self.doneStatus
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|