Mercurial > fife-parpg

annotate engine/extensions/fife_timer.py @ 306:6177cdf72489

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- added new method to object class: getActionIds() - cleanup to *.i file (replaced redundant code by including header file) FEATURES: - objects can now provide a list of action ids of all actions they were set up with
author chewie@33b003aa-7bff-0310-803a-e67f0ece8222
date Sat, 08 Aug 2009 14:24:35 +0000
parents 51cc05d862f2
children 48c99636453e
rev   line source
255
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1 # -*- coding: utf-8 -*-
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2 import fife
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3
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4 """
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5 Convenient timers
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6 =================
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7
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8 Usage::
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9 import timer
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10 timer.init( my_fife_engine.getTimeManager() )
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11 def spam():
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12 print "SPAM SPAM ",
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13 return "More spam?" # a string is a true value, so it's repeated.
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14 repeater = timer.repeatCall(500,spam)
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15 def stop_spam():
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16 repeater.stop()
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17 print "BACON EGGS AND SPAM"
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18 timer.delayCall(50000,stop_spam)
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19
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20 """
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21
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22
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23 _manager = None
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24 _alltimers = {}
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25
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26 def init(timemanager):
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27 """
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28 Initialize timers.
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29
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30 @param timemanager: A L{fife.TimeManager} as retuned by L{fife.Engine.getTimeManager}.
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31 """
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32 global _manager
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33 _manager = timemanager
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34
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35 class Timer(fife.TimeEvent):
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36 def __init__(self,delay=0,callback=None):
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37 super(Timer,self).__init__(0)
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38 self.manager = _manager
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39 self.is_registered = False
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40 self.callback = callback
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41 self.setPeriod(delay)
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42
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43 def start(self):
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44 if self.is_registered:
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45 return
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46 self.is_registered = True
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47 global _alltimers
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48 _alltimers[self]=1
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49 self.manager.registerEvent(self)
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50
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51 def stop(self):
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52 if not self.is_registered:
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53 return
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54 self.is_registered = False
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55 global _alltimers
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56 del _alltimers[self]
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57 self.manager.unregisterEvent(self)
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58
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59 def updateEvent(self,delta):
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60 if callable(self.callback):
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61 self.callback()
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62
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63 def delayCall(delay,callback):
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64 """
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65 Delay a function call by a number of milliseconds.
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66
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67 @param delay Delay in milliseconds.
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68 @param callback The function to call.
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69
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70 @return The timer.
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71 """
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72 timer = Timer(delay)
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73 def cbwa(c, *args):
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74 c(*args)
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75 def real_callback(c, t):
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76 t.stop()
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77 c()
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78
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79 timer.callback = cbwa(real_callback, callback, timer)
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80 timer.start()
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81 return timer
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82
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83 from traceback import print_exc
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84 def repeatCall(period,callback):
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85 """
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86 Repeat a function call.
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87
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88 @param period Period between calls in milliseconds.
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89 @param callback The function to call.
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90
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91 @return The timer.
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92
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93 The call is repeated until the callback returns a False
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94 value (i.e. None) or the timer is stopped.
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95 """
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96 timer = Timer(period)
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97 def real_callback():
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98 try:
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99 if not callback():
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100 timer.stop()
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101 except Exception:
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102 print_exc()
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103 timer.stop()
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104
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105 timer.callback = real_callback
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106 timer.start()
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107 return timer
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108
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109 __all__ = [init,Timer,delayCall,repeatCall]
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110