Mercurial > pyntnclick
annotate gamelib/state.py @ 34:e5c043aeed65
Inventory and items. And stuff.
author | Jeremy Thurgood <firxen@gmail.com> |
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date | Sun, 22 Aug 2010 19:59:42 +0200 |
parents | f8e02d02c782 |
children | ebc76bc0c067 |
rev | line source |
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1 """Utilities and base classes for dealing with scenes.""" |
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3 from albow.resource import get_image, get_sound |
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4 from pygame.locals import BLEND_ADD |
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6 |
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7 def initial_state(): |
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8 """Load the initial state.""" |
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9 state = State() |
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10 state.load_scenes("cryo") |
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11 state.set_current_scene("cryo") |
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12 return state |
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13 |
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14 |
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15 class State(object): |
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16 """Complete game state. |
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17 |
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18 Game state consists of: |
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19 |
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20 * items |
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21 * scenes |
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22 """ |
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23 |
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24 def __init__(self): |
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25 # map of scene name -> Scene object |
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26 self.scenes = {} |
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27 # map of item name -> Item object |
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28 self.items = {} |
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29 # list of item objects in inventory |
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30 self.inventory = [] |
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31 # current scene |
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32 self.current_scene = None |
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33 |
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34 def add_scene(self, scene): |
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35 self.scenes[scene.name] = scene |
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36 |
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37 def add_item(self, item): |
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38 self.scenes[item.name] = item |
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39 |
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40 def load_scenes(self, modname): |
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41 mod = __import__("gamelib.scenes.%s" % (modname,), fromlist=[modname]) |
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42 for scene_cls in mod.SCENES: |
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43 self.add_scene(scene_cls(self)) |
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44 |
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45 def set_current_scene(self, name): |
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46 self.current_scene = self.scenes[name] |
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47 |
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48 def add_inventory_item(self, name): |
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49 self.inventory.append(self.items[name]) |
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50 |
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51 def remove_inventory_item(self, name): |
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52 self.inventory.remove(self.items[name]) |
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53 |
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54 def draw(self, surface): |
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55 self.current_scene.draw(surface) |
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56 |
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57 |
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58 class Scene(object): |
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59 """Base class for scenes.""" |
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60 |
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61 # sub-folder to look for resources in |
22 | 62 FOLDER = None |
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63 |
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64 # name of background image resource |
22 | 65 BACKGROUND = None |
66 | |
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67 # name of scene (optional, defaults to folder) |
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68 NAME = None |
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69 |
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70 def __init__(self, state): |
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71 # scene name |
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72 self.name = self.NAME if self.NAME is not None else self.FOLDER |
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73 # link back to state object |
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74 self.state = state |
22 | 75 # map of thing names -> Thing objects |
76 self.things = {} | |
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77 self._background = get_image(self.FOLDER, self.BACKGROUND) |
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78 |
22 | 79 def draw_background(self, surface): |
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80 surface.blit(self._background, (0, 0), None, BLEND_ADD) |
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81 |
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82 def draw_things(self, surface): |
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83 for thing in self.things.itervalues(): |
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84 thing.draw(surface) |
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85 |
22 | 86 def draw(self, surface): |
87 self.draw_background(surface) | |
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88 self.draw_things(surface) |
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89 |
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90 |
22 | 91 class Thing(object): |
92 """Base class for things in a scene that you can interact with.""" | |
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93 |
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94 def __init__(self, rect): |
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95 self.rect = rect |
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96 # TODO: add masks |
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97 # TODO: add images |
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98 |
22 | 99 def interact(self, item): |
100 pass | |
101 | |
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102 def draw(self, surface): |
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103 pass |
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104 |
22 | 105 |
106 class Item(object): | |
107 """Base class for inventory items.""" | |
108 | |
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109 # name of item |
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110 NAME = None |
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111 |
22 | 112 def __init__(self): |
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113 self.name = self.NAME |
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114 |
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115 self.inventory_image = get_image('items', self.name) |
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116 # TODO: needs cursor |
22 | 117 |
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118 def get_inventory_image(self): |
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119 return self.inventory_image |
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120 |