Mercurial > sypikslang

annotate gamelib/game_base.py @ 88:74ce25ec2073

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Autosave & load support
author Neil Muller <drnlmuller@gmail.com>
date Wed, 09 May 2012 20:07:14 +0200
parents b503ccb0a86e
children 245ef50de84d
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1 import sys
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2 import os
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3
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4
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5 def get_subclasses(base_class, leaf_only=True):
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6 subclasses = []
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7 for cls in base_class.__subclasses__():
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8 if leaf_only and cls.__subclasses__():
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9 # Not a leaf class, and only want leaves
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10 continue
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11 subclasses.append(cls)
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12 return subclasses
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14
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15 def get_save_filename():
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16 """Determine the base filename for auto saves"""
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17 app = "sypikslang"
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18 if sys.platform.startswith('win'):
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19 if "APPDATA" in os.environ:
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20 base = os.path.join(os.environ["APPDATA"], app)
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21 else:
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22 base = os.path.join(os.path.expanduser("~"), "." + app)
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23 elif 'XDG_DATA_HOME' in os.environ:
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24 base = os.path.join(os.environ["XDG_DATA_HOME"], app)
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25 else:
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26 base = os.path.join(os.path.expanduser("~"), ".local", "share", app)
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27 if not os.path.exists(base):
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28 os.makedirs(base, mode=0770)
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29 if os.path.isdir(base):
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30 return os.path.join(base, 'gamestate.json')
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31 print 'save game directory is not a directory %s' % base
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32 return None
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33
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34
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35 class Science(object):
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36 NAME = None
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37 PREREQUISITES = ()
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38 ACQUISITION_CHANCE = 1.0
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39 SCIENCE_TYPE = None
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40
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41 def __init__(self, points=0):
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42 self.points = points
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43
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44 def spend_point(self):
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45 self.points += 1
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47 def can_spend(self, lab, spend):
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48 return True
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49
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50 @classmethod
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51 def depends_on(self, sciences):
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52 for science_class, _ in self.PREREQUISITES:
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53 if any(isinstance(science, science_class) for science in sciences):
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54 return True
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55 return False
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56
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57 @classmethod
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58 def save_name(cls):
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59 return "%s.%s" % (cls.SCIENCE_TYPE, cls.__name__)
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61 def save_data(self):
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62 return (self.save_name(), self.points)