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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