Mercurial > pyntnclick
annotate gamelib/state.py @ 28:0f25f7b9b37a
Add loading of initial state.
author | Simon Cross <hodgestar+bzr@gmail.com> |
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date | Sun, 22 Aug 2010 18:48:32 +0200 |
parents | 1e90a3e4618e |
children | 6322d92dc8f0 |
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1 """Utilities and base classes for dealing with scenes.""" |
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2 |
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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_scence = self.scenes[name] |
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44 |
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45 def draw(self, surface): |
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46 self.current_scene.draw(surface) |
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47 |
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48 |
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49 class Scene(object): |
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50 """Base class for scenes.""" |
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51 |
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52 # sub-folder to look for resources in |
22 | 53 FOLDER = None |
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54 |
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55 # name of background image resource |
22 | 56 BACKGROUND = None |
57 | |
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58 # name of scene (optional, defaults to folder) |
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59 NAME = None |
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60 |
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61 def __init__(self, state): |
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62 # scene name |
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63 self.name = self.NAME if self.NAME is not None else self.FOLDER |
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64 # link back to state object |
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65 self.state = state |
22 | 66 # map of thing names -> Thing objects |
67 self.things = {} | |
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68 self._background = get_image(self.FOLDER, self.BACKGROUND) |
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69 |
22 | 70 def draw_background(self, surface): |
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71 surface.blit(self._background, (0, 0), None, BLEND_ADD) |
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72 |
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73 def draw_things(self, surface): |
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74 for thing in self.things.itervalues(): |
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75 thing.draw(surface) |
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76 |
22 | 77 def draw(self, surface): |
78 self.draw_background(surface) | |
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79 self.draw_things(surface) |
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80 |
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81 |
22 | 82 class Thing(object): |
83 """Base class for things in a scene that you can interact with.""" | |
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84 |
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85 def __init__(self): |
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86 pass |
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87 |
22 | 88 def interact(self, item): |
89 pass | |
90 | |
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91 def draw(self, surface): |
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92 pass |
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93 |
22 | 94 |
95 class Item(object): | |
96 """Base class for inventory items.""" | |
97 | |
98 def __init__(self): | |
99 pass | |
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100 # needs cursor |
22 | 101 |