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comparison engine/extensions/fife_timer.py @ 255:51cc05d862f2

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Merged editor_rewrite branch to trunk. This contains changes that may break compatibility against existing clients. For a list of changes that may affect your client, see: http://wiki.fifengine.de/Changes_to_pychan_and_FIFE_in_editor_rewrite_branch
author cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 08 Jun 2009 16:00:02 +0000
parents
children 48c99636453e
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254:10b5f7f36dd4 255:51cc05d862f2
1 # -*- coding: utf-8 -*-
2 import fife
3
4 """
5 Convenient timers
6 =================
7
8 Usage::
9 import timer
10 timer.init( my_fife_engine.getTimeManager() )
11 def spam():
12 print "SPAM SPAM ",
13 return "More spam?" # a string is a true value, so it's repeated.
14 repeater = timer.repeatCall(500,spam)
15 def stop_spam():
16 repeater.stop()
17 print "BACON EGGS AND SPAM"
18 timer.delayCall(50000,stop_spam)
19
20 """
21
22
23 _manager = None
24 _alltimers = {}
25
26 def init(timemanager):
27 """
28 Initialize timers.
29
30 @param timemanager: A L{fife.TimeManager} as retuned by L{fife.Engine.getTimeManager}.
31 """
32 global _manager
33 _manager = timemanager
34
35 class Timer(fife.TimeEvent):
36 def __init__(self,delay=0,callback=None):
37 super(Timer,self).__init__(0)
38 self.manager = _manager
39 self.is_registered = False
40 self.callback = callback
41 self.setPeriod(delay)
42
43 def start(self):
44 if self.is_registered:
45 return
46 self.is_registered = True
47 global _alltimers
48 _alltimers[self]=1
49 self.manager.registerEvent(self)
50
51 def stop(self):
52 if not self.is_registered:
53 return
54 self.is_registered = False
55 global _alltimers
56 del _alltimers[self]
57 self.manager.unregisterEvent(self)
58
59 def updateEvent(self,delta):
60 if callable(self.callback):
61 self.callback()
62
63 def delayCall(delay,callback):
64 """
65 Delay a function call by a number of milliseconds.
66
67 @param delay Delay in milliseconds.
68 @param callback The function to call.
69
70 @return The timer.
71 """
72 timer = Timer(delay)
73 def cbwa(c, *args):
74 c(*args)
75 def real_callback(c, t):
76 t.stop()
77 c()
78
79 timer.callback = cbwa(real_callback, callback, timer)
80 timer.start()
81 return timer
82
83 from traceback import print_exc
84 def repeatCall(period,callback):
85 """
86 Repeat a function call.
87
88 @param period Period between calls in milliseconds.
89 @param callback The function to call.
90
91 @return The timer.
92
93 The call is repeated until the callback returns a False
94 value (i.e. None) or the timer is stopped.
95 """
96 timer = Timer(period)
97 def real_callback():
98 try:
99 if not callback():
100 timer.stop()
101 except Exception:
102 print_exc()
103 timer.stop()
104
105 timer.callback = real_callback
106 timer.start()
107 return timer
108
109 __all__ = [init,Timer,delayCall,repeatCall]
110