Mercurial > pyntnclick
annotate gamelib/state.py @ 30:daf9eecb670f
Add inventory manipulation methods.
author | Simon Cross <hodgestar+bzr@gmail.com> |
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date | Sun, 22 Aug 2010 19:31:51 +0200 |
parents | 6322d92dc8f0 |
children | 18cb1af411ef |
rev | line source |
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Start of base classes for game state.
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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 |
11 | 5 |
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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 = {} |
22 | 29 # map of item name -> Item object in inventory |
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 load_scenes(self, modname): |
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38 mod = __import__("gamelib.scenes.%s" % (modname,), fromlist=[modname]) |
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39 for scene_cls in mod.SCENES: |
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40 self.add_scene(scene_cls(self)) |
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41 |
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42 def set_current_scene(self, name): |
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43 self.current_scene = self.scenes[name] |
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44 |
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45 def add_inventory_item(self, name): |
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46 self.inventory[name] = self.items[name] |
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47 |
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48 def remove_inventory_item(self, name): |
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49 del self.inventory[name] |
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50 |
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51 def draw(self, surface): |
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52 self.current_scene.draw(surface) |
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53 |
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54 |
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55 class Scene(object): |
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56 """Base class for scenes.""" |
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57 |
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58 # sub-folder to look for resources in |
22 | 59 FOLDER = None |
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60 |
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61 # name of background image resource |
22 | 62 BACKGROUND = None |
63 | |
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64 # name of scene (optional, defaults to folder) |
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65 NAME = None |
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66 |
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67 def __init__(self, state): |
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68 # scene name |
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69 self.name = self.NAME if self.NAME is not None else self.FOLDER |
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70 # link back to state object |
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71 self.state = state |
22 | 72 # map of thing names -> Thing objects |
73 self.things = {} | |
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74 self._background = get_image(self.FOLDER, self.BACKGROUND) |
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75 |
22 | 76 def draw_background(self, surface): |
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77 surface.blit(self._background, (0, 0), None, BLEND_ADD) |
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78 |
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79 def draw_things(self, surface): |
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80 for thing in self.things.itervalues(): |
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81 thing.draw(surface) |
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82 |
22 | 83 def draw(self, surface): |
84 self.draw_background(surface) | |
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85 self.draw_things(surface) |
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86 |
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87 |
22 | 88 class Thing(object): |
89 """Base class for things in a scene that you can interact with.""" | |
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90 |
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91 def __init__(self): |
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92 pass |
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93 |
22 | 94 def interact(self, item): |
95 pass | |
96 | |
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97 def draw(self, surface): |
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98 pass |
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99 |
22 | 100 |
101 class Item(object): | |
102 """Base class for inventory items.""" | |
103 | |
104 def __init__(self): | |
105 pass | |
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106 # needs cursor |
22 | 107 |