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annotate engine/extensions/basicapplication.py @ 0:4a0efb7baf70

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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
parents
children 860d81602a2a
rev   line source
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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1 # coding: utf-8
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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2
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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3 """
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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4 The basic application and main loop.
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5
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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6 See the L{ApplicationBase} documentation.
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7 """
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8
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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9 import fife
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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10 import fifelog
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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11 from serializers.xmlanimation import XMLAnimationLoader
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12
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13 class ExitEventListener(fife.IKeyListener):
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14 """
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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15 Default, rudimentary event listener.
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16
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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17 Will cause the application to quit on pressing ESC.
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18 """
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19 def __init__(self, app):
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20 self.app = app
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21 self.engine = app.engine
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22 eventmanager = self.engine.getEventManager()
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23 eventmanager.setNonConsumableKeys([fife.Key.ESCAPE])
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24 fife.IKeyListener.__init__(self)
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25 eventmanager.addKeyListener(self)
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26 self.quitRequested = False
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27
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28 def keyPressed(self, evt):
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29 keyval = evt.getKey().getValue()
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30 if keyval == fife.Key.ESCAPE:
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31 self.app.quit()
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32
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33 def keyReleased(self, evt):
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34 pass
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35
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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36 class ApplicationBase(object):
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37 """
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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38 ApplicationBase is an extendable class that provides a basic environment for a FIFE-based client.
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39
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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40 The unextended application reads in and initializes engine settings, sets up a simple event
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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41 listener, and pumps the engine while listening for a quit message. Specialized applications can
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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42 modify settings.py to change initial engine settings. They can provide their own event listener
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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43 by overriding L{createListener}. And they can override the L{_pump} method
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44 to define runtime behavior of the application.
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45
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46 """
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47 def __init__(self):
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48 self.engine = fife.Engine()
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49
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50 self.loadSettings()
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51 self.initLogging()
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52
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53 self.engine.init()
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54
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55 self._animationloader = XMLAnimationLoader(self.engine.getImagePool(), self.engine.getVFS())
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56 self.engine.getAnimationPool().addResourceLoader(self._animationloader)
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57
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58 self.quitRequested = False
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59 self.breakRequested = False
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60 self.returnValues = []
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61
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62 def loadSettings(self):
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63 """
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64 Load the settings from a python file and load them into the engine.
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65 Called in the ApplicationBase constructor.
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66 """
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67 import settings
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68 self.settings = settings
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69
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70 engineSetting = self.engine.getSettings()
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71 engineSetting.setDefaultFontGlyphs(settings.FontGlyphs)
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72 engineSetting.setDefaultFontPath(settings.Font)
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73 engineSetting.setDefaultFontSize(12)
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74 engineSetting.setBitsPerPixel(settings.BitsPerPixel)
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75 engineSetting.setFullScreen(settings.FullScreen)
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76 engineSetting.setInitialVolume(settings.InitialVolume)
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77 engineSetting.setRenderBackend(settings.RenderBackend)
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78 engineSetting.setSDLRemoveFakeAlpha(settings.SDLRemoveFakeAlpha)
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79 engineSetting.setScreenWidth(settings.ScreenWidth)
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80 engineSetting.setScreenHeight(settings.ScreenHeight)
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81 try:
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82 engineSetting.setImageChunkingSize(settings.ImageChunkSize)
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83 except:
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84 pass
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85
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86 def initLogging(self):
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87 """
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88 Initialize the LogManager.
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89 """
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90 self.log = fifelog.LogManager(self.engine, self.settings.LogToPrompt, self.settings.LogToFile)
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91 if self.settings.LogModules:
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92 self.log.setVisibleModules(*self.settings.LogModules)
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93
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94 def createListener(self):
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95 """
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96 This creates a default event listener, which will just close the program
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97 after pressing ESC.
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98
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99 You should override this method to provide your own event handling.
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100 """
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101 return ExitEventListener(self)
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102
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103 def run(self):
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104 """
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105 Initialize the event listener and event loop - and start it.
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106 """
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107 eventlistener = self.createListener()
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108 self.engine.initializePumping()
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109 retval = self.mainLoop()
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110 self.engine.finalizePumping()
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111 return retval
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112
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113 def mainLoop(self):
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114 """
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115 The programs main loop.
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116
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117 Do not override this, instead provide your own L{_pump} method.
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118 You can call this recursively, e.g. to provide synchronous
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119 Dialogs :-) and break out of the current mainLoop by calling
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120 L{breakFromMainLoop}. It will return the argument passed
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121 to L{breakFromMainLoop}.
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122 """
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123 self.returnValues.append(None)
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124 while not self.quitRequested:
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125 try:
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126 self.engine.pump()
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127 except RuntimeError, e:
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128 print str(e)
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129
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130 self._pump()
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131
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132 if self.breakRequested:
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133 self.breakRequested = False
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134 break
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135
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136 return self.returnValues.pop()
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137
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138 def breakFromMainLoop(self,returnValue):
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139 """
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140 Break from the currently running L{mainLoop}.
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141
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142 The passed argument will be returned by the mainLoop.
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143 """
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144 self.returnValues[-1] = returnValue
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145 self.breakRequested = True
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146
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147
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148 def _pump(self):
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149 """
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150 Application pump.
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151
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152 Derived classes can specialize this for unique behavior.
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153 This is called every frame.
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154 """
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155
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156 def quit(self):
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157 """
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158 Quit the application. Really!
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159 """
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160 self.quitRequested = True