1 | from nagslang.constants import COLLISION_TYPE_PLAYER
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2 |
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3 |
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4 | class PuzzleGlue(object):
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5 | """Glue that holds bits of a puzzle together.
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6 | """
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7 | def __init__(self):
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8 | self._components = {}
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9 |
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10 | def add_component(self, name, puzzler):
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11 | if not isinstance(puzzler, Puzzler):
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12 | puzzler = puzzler.puzzler
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13 | self._components[name] = puzzler
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14 | puzzler.set_glue(self)
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15 |
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16 | def get_state_of(self, name):
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17 | return self._components[name].get_state()
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18 |
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19 |
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20 | class Puzzler(object):
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21 | """Behaviour specific to a puzzle component.
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22 | """
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23 | def set_glue(self, glue):
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24 | self.glue = glue
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25 |
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26 | def set_game_object(self, game_object):
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27 | self.game_object = game_object
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28 |
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29 | def get_state(self):
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30 | raise NotImplementedError()
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31 |
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32 |
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33 | class YesPuzzler(Puzzler):
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34 | """Yes sir, I'm always on.
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35 | """
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36 | def get_state(self):
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37 | return True
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38 |
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39 |
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40 | class NoPuzzler(Puzzler):
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41 | """No sir, I'm always off.
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42 | """
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43 | def get_state(self):
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44 | return False
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45 |
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46 |
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47 | class CollidePuzzler(Puzzler):
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48 | def __init__(self, *collision_types):
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49 | if not collision_types:
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50 | collision_types = (COLLISION_TYPE_PLAYER,)
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51 | self._collision_types = collision_types
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52 |
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53 | def get_state(self):
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54 | space = self.game_object.get_space()
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55 | for shape in space.shape_query(self.game_object.get_shape()):
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56 | if shape.collision_type in self._collision_types:
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57 | return True
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58 | return False
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59 |
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60 |
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61 | class StateProxyPuzzler(Puzzler):
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62 | def __init__(self, state_source):
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63 | self._state_source = state_source
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64 |
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65 | def get_state(self):
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66 | return self.glue.get_state_of(self._state_source)
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67 |
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68 |
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69 | class StateLogicalAndPuzzler(Puzzler):
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70 | def __init__(self, *state_sources):
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71 | self._state_sources = state_sources
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72 |
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73 | def get_state(self):
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74 | for state_source in self._state_sources:
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75 | if not self.glue.get_state_of(state_source):
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76 | return False
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77 | return True
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