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annotate gamelib/level.py @ 410:e83ec14163f2

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Make level loading more robust
author Neil Muller <drnlmuller@gmail.com>
date Sat, 21 Nov 2009 11:04:16 +0000
parents bb75979b58e6
children 1e24eedbf40f
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463802281182 Add basic level support (level choosing needs work)
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1 # level.py
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2
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3 import constants
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4 import data
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5 import os
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6 from animal import DEFAULT_FOX_WEIGHTINGS
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7 from ConfigParser import RawConfigParser
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8
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9 class Level(object):
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10 """Container for level details"""
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11
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12 def __init__(self, level_name):
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13 level_info = None
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14 default_map = '%s.tga' % level_name
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15 for poss_file in ['levels/%s.conf' % level_name, '%s.conf' % level_name,
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16 'levels/%s' % level_name, level_name]:
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17 cand = data.filepath(poss_file)
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18 if os.path.exists(cand):
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19 level_info = cand
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20 break
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21 if not level_info:
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22 raise RuntimeError('Unable to load %s' % level_name)
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23 # Load the level info file
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24 # setup defaults
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25 defaults = {
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26 'map' : default_map,
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27 'level name' : level_name,
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28 'sell price chicken' : constants.DEFAULT_SELL_PRICE_CHICKEN,
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29 'sell price egg' : constants.DEFAULT_SELL_PRICE_EGG,
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30 'sell price dead fox' : constants.DEFAULT_SELL_PRICE_DEAD_FOX,
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31 'turn limit' : constants.DEFAULT_TURN_LIMIT,
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32 'goal' : constants.DEFAULT_GOAL_DESC,
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33 'max foxes' : constants.DEFAULT_MAX_FOXES,
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34 'min foxes' : 0,
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35 'starting cash' : constants.DEFAULT_STARTING_CASH,
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36 }
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37 # Add default fox weightings
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38 for animal, prob in DEFAULT_FOX_WEIGHTINGS:
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39 defaults[animal.CONFIG_NAME] = prob
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40 config = RawConfigParser(defaults)
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41 config.read(level_info)
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42 # NB. This assumes the level file is correctly formatted. No provision
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43 # is made for missing sections or incorrectly specified values.
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44 # i.e. Things may blow up
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45 map_file = config.get('Level', 'map')
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46 self.map = data.filepath('levels/%s' % map_file)
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47 self.level_name = config.get('Level', 'level name')
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48 self.goal = config.get('Level', 'goal')
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49 self.turn_limit = config.getint('Level', 'turn limit')
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50 self.max_foxes = config.getint('Game values', 'max foxes')
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51 self.min_foxes = config.getint('Game values', 'min foxes')
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52 self.sell_price_chicken = config.getint('Game values', 'sell price chicken')
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53 self.sell_price_egg = config.getint('Game values', 'sell price egg')
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54 self.sell_price_dead_fox = config.getint('Game values',
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55 'sell price dead fox')
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56 self.starting_cash = config.getint('Game values', 'starting cash')
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57 self.fox_weightings = []
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58 for animal, _prob in DEFAULT_FOX_WEIGHTINGS:
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59 self.fox_weightings.append((animal, config.getint('Fox probablities',
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60 animal.CONFIG_NAME)))
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61
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62 # Utility functions, so we can make things more flexible later
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63
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64 def is_last_day(self, days):
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65 """Check if we're the last day"""
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66 return days == self.turn_limit
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67
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68 def get_max_turns(self):
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69 """Get the display string for the turn limit"""
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70 if self.turn_limit > 0:
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71 return self.turn_limit
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72 else:
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73 return '-'
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74
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75 def is_game_over(self, gameboard):
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76 """Check if the game is over"""
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77 if gameboard.trees_left() == 0:
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78 return True
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79 if self.turn_limit > 0 and gameboard.days >= self.turn_limit:
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80 return True
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81 if len(gameboard.chickens) == 0:
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82 return True
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83