Mercurial > nagslang

annotate nagslang/puzzle.py @ 416:bea0ea5b98df

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Well, gravity.
author davidsharpe@lantea.local
date Sat, 07 Sep 2013 12:52:16 +0200
parents 14339d2d46bc
children 547320870aed
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1 from nagslang.constants import COLLISION_TYPE_PLAYER
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2
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3
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4 def get_editable_puzzlers():
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5 classes = []
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6 for cls_name, cls in globals().iteritems():
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7 if isinstance(cls, type) and hasattr(cls, 'requires'):
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8 classes.append((cls_name, cls))
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9 return classes
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10
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12 class PuzzleGlue(object):
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13 """Glue that holds bits of a puzzle together.
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14 """
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15 def __init__(self):
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16 self._components = {}
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17
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18 def add_component(self, name, puzzler):
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19 if not isinstance(puzzler, Puzzler):
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20 puzzler = puzzler.puzzler
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21 if puzzler is None:
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22 # We've got a name, but no puzzler,
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23 # so we shouldn't actually be stuck
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24 # in here
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25 return
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26 self._components[name] = puzzler
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27 puzzler.set_glue(self)
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28
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29 def get_state_of(self, name):
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30 return self._components[name].get_state()
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31
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32
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33 class Puzzler(object):
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34 """Behaviour specific to a puzzle component.
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35 """
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36 def set_glue(self, glue):
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37 self.glue = glue
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38
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39 def set_game_object(self, game_object):
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40 self.game_object = game_object
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41
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42 def get_state(self):
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43 raise NotImplementedError()
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44
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45 @classmethod
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46 def requires(cls):
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47 """Tell the level editor the arguments we require
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48
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49 Format is a list of name: type hint tuples"""
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50 return [("name", "string")]
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51
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52
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53 class YesPuzzler(Puzzler):
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54 """Yes sir, I'm always on.
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55 """
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56 def get_state(self):
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57 return True
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58
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59
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60 class NoPuzzler(Puzzler):
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61 """No sir, I'm always off.
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62 """
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63 def get_state(self):
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64 return False
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65
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66
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67 class CollidePuzzler(Puzzler):
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68 def __init__(self, *collision_types):
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69 if not collision_types:
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70 collision_types = (COLLISION_TYPE_PLAYER,)
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71 self._collision_types = collision_types
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72
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73 def get_state(self):
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74 space = self.game_object.get_space()
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75 for shape in space.shape_query(self.game_object.get_shape()):
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76 if shape.collision_type in self._collision_types:
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77 return True
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78 return False
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79
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80 @classmethod
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81 def requires(cls):
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82 return [("name", "string"), ("collision_types", "list of ints")]
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85 class ParentAttrPuzzler(Puzzler):
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86 def __init__(self, attr_name):
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87 self._attr_name = attr_name
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88
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89 def get_state(self):
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90 return getattr(self.game_object, self._attr_name)
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91
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92 @classmethod
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93 def requires(cls):
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94 return [("name", "string"), ("attr_name", "string")]
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96
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97 class StateProxyPuzzler(Puzzler):
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98 def __init__(self, state_source):
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99 self._state_source = state_source
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100
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101 def get_state(self):
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102 return self.glue.get_state_of(self._state_source)
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103
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104 @classmethod
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105 def requires(cls):
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106 return [("name", "string"), ("sources", "list of names")]
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108
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109 class StateLogicalAndPuzzler(Puzzler):
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110 def __init__(self, *state_sources):
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111 self._state_sources = state_sources
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112
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113 def get_state(self):
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114 for state_source in self._state_sources:
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115 if not self.glue.get_state_of(state_source):
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116 return False
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117 return True
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118
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119 @classmethod
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120 def requires(cls):
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121 return [("name", "string"), ("sources", "list of names")]