Mercurial > parpg-source

annotate bGrease/__init__.py @ 179:90b2545f7459

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This fixes the director exception when running a command in the console.
author Beliar <KarstenBock@gmx.net>
date Wed, 07 Mar 2012 20:04:48 +0100
parents a6bbb732b27b
children
rev   line source
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1 #############################################################################
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2 #
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3 # Copyright (c) 2010 by Casey Duncan and contributors
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4 # All Rights Reserved.
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5 #
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6 # This software is subject to the provisions of the MIT License
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7 # A copy of the license should accompany this distribution.
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8 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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9 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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10 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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11 #
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12 #############################################################################
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13
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14 __versioninfo__ = (0, 3, 0)
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15 __version__ = '.'.join(str(n) for n in __versioninfo__)
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16
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17 __all__ = ('BaseWorld', 'Entity', 'System', 'Renderer')
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18
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19 import component
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20 import geometry
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21 import collision
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22 from entity import Entity
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23 from world import BaseWorld
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24
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25 import abc
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26
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27 class System(object):
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28 """Grease system abstract base class. Systems define behaviorial aspects
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29 of a |World|. All systems must define a :meth:`step`
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30 method that is invoked by the world each timestep. User-defined systems
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31 are not required to subclass this class.
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32
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33 See :ref:`an example system from the tutorial <tut-system-example>`.
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34 """
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35 __metaclass__ = abc.ABCMeta
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36
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37 world = None
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38 """The |World| this system belongs to"""
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39
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40 def set_world(self, world):
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41 """Bind the system to a world"""
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42 self.world = world
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43
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44 @abc.abstractmethod
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45 def step(self, dt):
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46 """Execute a time step for the system. Must be defined
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47 by all system classes.
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48
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49 :param dt: Time since last step invocation
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50 :type dt: float
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51 """
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52
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53 class Renderer(object):
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54 """Grease renderer abstract base class. Renderers define the presentation
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55 of a |World|. All renderers must define a :meth:`draw`
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56 method that is invoked by the world when the display needs to be redrawn.
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57 User-defined renderers are not required to subclass this class.
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58
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59 See :ref:`an example renderer from the tutorial <tut-renderer-example>`.
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60 """
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61 __metaclass__ = abc.ABCMeta
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62
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63 world = None
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64 """The |World| this renderer belongs to"""
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65
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66 def set_world(self, world):
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67 """Bind the system to a world"""
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68 self.world = world
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69
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70 @abc.abstractmethod
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71 def draw(self):
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72 """Issue drawing commands for this renderer. Must be defined
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73 for all renderer classes.
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74 """
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75