我真的是在用头撞墙（就像，是的，在身体上，在我目前的位置，我正在损坏我的头盖骨）。基本上，我有一个带有一些典型游戏“房间”或“屏幕”的 Python/Pygame 游戏。EG 标题画面、高分画面和实际游戏室。当我在房间之间切换时发生了一些不好的事情：旧房间（及其各种项目）没有从内存或我的事件侦听器中删除。不仅如此，每次我回到某个房间时，我的事件侦听器数量都会增加，同时消耗的 RAM 也会增加！（例如，如果我在标题屏幕和“游戏室”之间来回切换，事件监听器的数量和内存使用量就会不断增加。
主要问题是所有事件侦听器开始累加并真正耗尽 CPU。我是 Python 新手，不知道我是否在这里做一些明显错误的事情，或者什么。
如果你能帮助我，我会非常爱你！
下面是相关的源代码。完整的源代码位于http://www.necessarygames.com/my_games/betraveled/betraveled_src0328.zip （需要 Python 2.6 + Pygame 1.9）
主文件
class RoomController(object):
"""Controls which room is currently active (eg Title Screen)"""
def __init__(self, screen, ev_manager):
self.room = None
self.screen = screen
self.ev_manager = ev_manager
self.ev_manager.register_listener(self)
self.room = self.set_room(config.room)
def set_room(self, room_const):
#Unregister old room from ev_manager
if self.room:
self.room.ev_manager.unregister_listener(self.room)
self.room = None
#Set new room based on const
if room_const == config.TITLE_SCREEN:
return rooms.TitleScreen(self.screen, self.ev_manager)
elif room_const == config.GAME_MODE_ROOM:
return rooms.GameModeRoom(self.screen, self.ev_manager)
elif room_const == config.GAME_ROOM:
return rooms.GameRoom(self.screen, self.ev_manager)
elif room_const == config.HIGH_SCORES_ROOM:
return rooms.HighScoresRoom(self.screen, self.ev_manager)
def notify(self, event):
if isinstance(event, ChangeRoomRequest):
if event.game_mode:
config.game_mode = event.game_mode
self.room = self.set_room(event.new_room)
#Run game
def main():
pygame.init()
screen = pygame.display.set_mode(config.screen_size)
ev_manager = EventManager()
spinner = CPUSpinnerController(ev_manager)
room_controller = RoomController(screen, ev_manager)
pygame_event_controller = PyGameEventController(ev_manager)
spinner.run()
事件管理器.PY
class EventManager:
#This object is responsible for coordinating most communication
#between the Model, View, and Controller.
def __init__(self):
from weakref import WeakKeyDictionary
self.last_listeners = {}
self.listeners = WeakKeyDictionary()
self.eventQueue= []
self.gui_app = None
#----------------------------------------------------------------------
def register_listener(self, listener):
self.listeners[listener] = 1
#----------------------------------------------------------------------
def unregister_listener(self, listener):
if listener in self.listeners:
del self.listeners[listener]
#----------------------------------------------------------------------
def clear(self):
del self.listeners[:]
#----------------------------------------------------------------------
def post(self, event):
# if isinstance(event, MouseButtonLeftEvent):
# debug(event.name)
#NOTE: copying the list like this before iterating over it, EVERY tick, is highly inefficient,
#but currently has to be done because of how new listeners are added to the queue while it is running
#(eg when popping cards from a deck). Should be changed. See: http://dr0id.homepage.bluewin.ch/pygame_tutorial08.html
#and search for "Watch the iteration"
print 'Number of listeners: ' + str(len(self.listeners))
for listener in list(self.listeners):
#NOTE: If the weakref has died, it will be
#automatically removed, so we don't have
#to worry about it.
listener.notify(event)
def notify(self, event):
pass
#------------------------------------------------------------------------------
class PyGameEventController:
"""..."""
def __init__(self, ev_manager):
self.ev_manager = ev_manager
self.ev_manager.register_listener(self)
self.input_freeze = False
#----------------------------------------------------------------------
def notify(self, incoming_event):
if isinstance(incoming_event, UserInputFreeze):
self.input_freeze = True
elif isinstance(incoming_event, UserInputUnFreeze):
self.input_freeze = False
elif isinstance(incoming_event, TickEvent) or isinstance(incoming_event, BoardCreationTick):
#Share some time with other processes, so we don't hog the cpu
pygame.time.wait(5)
#Handle Pygame Events
for event in pygame.event.get():
#If this event manager has an associated PGU GUI app, notify it of the event
if self.ev_manager.gui_app:
self.ev_manager.gui_app.event(event)
#Standard event handling for everything else
ev = None
if event.type == QUIT:
ev = QuitEvent()
elif event.type == pygame.MOUSEBUTTONDOWN and not self.input_freeze:
if event.button == 1: #Button 1
pos = pygame.mouse.get_pos()
ev = MouseButtonLeftEvent(pos)
elif event.type == pygame.MOUSEBUTTONDOWN and not self.input_freeze:
if event.button == 2: #Button 2
pos = pygame.mouse.get_pos()
ev = MouseButtonRightEvent(pos)
elif event.type == pygame.MOUSEBUTTONUP and not self.input_freeze:
if event.button == 2: #Button 2 Release
pos = pygame.mouse.get_pos()
ev = MouseButtonRightReleaseEvent(pos)
elif event.type == pygame.MOUSEMOTION:
pos = pygame.mouse.get_pos()
ev = MouseMoveEvent(pos)
#Post event to event manager
if ev:
self.ev_manager.post(ev)
# elif isinstance(event, BoardCreationTick):
# #Share some time with other processes, so we don't hog the cpu
# pygame.time.wait(5)
#
# #If this event manager has an associated PGU GUI app, notify it of the event
# if self.ev_manager.gui_app:
# self.ev_manager.gui_app.event(event)
#------------------------------------------------------------------------------
class CPUSpinnerController:
def __init__(self, ev_manager):
self.ev_manager = ev_manager
self.ev_manager.register_listener(self)
self.clock = pygame.time.Clock()
self.cumu_time = 0
self.keep_going = True
#----------------------------------------------------------------------
def run(self):
if not self.keep_going:
raise Exception('dead spinner')
while self.keep_going:
time_passed = self.clock.tick()
fps = self.clock.get_fps()
self.cumu_time += time_passed
self.ev_manager.post(TickEvent(time_passed, fps))
if self.cumu_time >= 1000:
self.cumu_time = 0
self.ev_manager.post(SecondEvent(fps=fps))
pygame.quit()
#----------------------------------------------------------------------
def notify(self, event):
if isinstance(event, QuitEvent):
#this will stop the while loop from running
self.keep_going = False
使用事件管理器的示例类
class Timer(object):
def __init__(self, ev_manager, time_left):
self.ev_manager = ev_manager
self.ev_manager.register_listener(self)
self.time_left = time_left
self.paused = False
def __repr__(self):
return str(self.time_left)
def pause(self):
self.paused = True
def unpause(self):
self.paused = False
def notify(self, event):
#Pause Event
if isinstance(event, Pause):
self.pause()
#Unpause Event
elif isinstance(event, Unpause):
self.unpause()
#Second Event
elif isinstance(event, SecondEvent):
if not self.paused:
self.time_left -= 1