Mercurial > parpg-source
annotate bGrease/__init__.py @ 48:1bdadb768bcf
Added approach functionality to the BaseBehaviour
| author | KarstenBock@gmx.net |
|---|---|
| date | Thu, 08 Sep 2011 14:20:31 +0200 |
| parents | ff3e395abf91 |
| children | a6bbb732b27b |
| rev | line source |
|---|---|
| 5 | 1 ############################################################################# |
| 2 # | |
| 3 # Copyright (c) 2010 by Casey Duncan and contributors | |
| 4 # All Rights Reserved. | |
| 5 # | |
| 6 # This software is subject to the provisions of the MIT License | |
| 7 # A copy of the license should accompany this distribution. | |
| 8 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 9 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 10 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
| 11 # | |
| 12 ############################################################################# | |
| 13 | |
| 14 __versioninfo__ = (0, 3, 0) | |
| 15 __version__ = '.'.join(str(n) for n in __versioninfo__) | |
| 16 | |
| 17 __all__ = ('BaseWorld', 'Entity', 'System', 'Renderer') | |
| 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 |
| 5 | 24 |
| 25 import abc | |
| 26 | |
| 27 class System(object): | |
| 28 """Grease system abstract base class. Systems define behaviorial aspects | |
| 29 of a |World|. All systems must define a :meth:`step` | |
| 30 method that is invoked by the world each timestep. User-defined systems | |
| 31 are not required to subclass this class. | |
| 32 | |
| 33 See :ref:`an example system from the tutorial <tut-system-example>`. | |
| 34 """ | |
| 35 __metaclass__ = abc.ABCMeta | |
| 36 | |
| 37 world = None | |
| 38 """The |World| this system belongs to""" | |
| 39 | |
| 40 def set_world(self, world): | |
| 41 """Bind the system to a world""" | |
| 42 self.world = world | |
| 43 | |
| 44 @abc.abstractmethod | |
| 45 def step(self, dt): | |
| 46 """Execute a time step for the system. Must be defined | |
| 47 by all system classes. | |
| 48 | |
| 49 :param dt: Time since last step invocation | |
| 50 :type dt: float | |
| 51 """ | |
| 52 | |
| 53 class Renderer(object): | |
| 54 """Grease renderer abstract base class. Renderers define the presentation | |
| 55 of a |World|. All renderers must define a :meth:`draw` | |
| 56 method that is invoked by the world when the display needs to be redrawn. | |
| 57 User-defined renderers are not required to subclass this class. | |
| 58 | |
| 59 See :ref:`an example renderer from the tutorial <tut-renderer-example>`. | |
| 60 """ | |
| 61 __metaclass__ = abc.ABCMeta | |
| 62 | |
| 63 world = None | |
| 64 """The |World| this renderer belongs to""" | |
| 65 | |
| 66 def set_world(self, world): | |
| 67 """Bind the system to a world""" | |
| 68 self.world = world | |
| 69 | |
| 70 @abc.abstractmethod | |
| 71 def draw(self): | |
| 72 """Issue drawing commands for this renderer. Must be defined | |
| 73 for all renderer classes. | |
| 74 """ | |
| 75 |