Mercurial > pyntnclick

annotate gamelib/state.py @ 29:6322d92dc8f0

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Add state widget for rendering state.
author Simon Cross <hodgestar+bzr@gmail.com>
date Sun, 22 Aug 2010 19:20:58 +0200
parents 0f25f7b9b37a
children daf9eecb670f
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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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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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15 class State(object):
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16 """Complete game state.
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18 Game state consists of:
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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 # map of item name -> Item object 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 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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45 def draw(self, surface):
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46 self.current_scene.draw(surface)
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49 class Scene(object):
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50 """Base class for scenes."""
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52 # sub-folder to look for resources in
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53 FOLDER = None
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54
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55 # name of background image resource
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56 BACKGROUND = None
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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
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66 # map of thing names -> Thing objects
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67 self.things = {}
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68 self._background = get_image(self.FOLDER, self.BACKGROUND)
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70 def draw_background(self, surface):
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71 surface.blit(self._background, (0, 0), None, BLEND_ADD)
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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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77 def draw(self, surface):
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78 self.draw_background(surface)
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79 self.draw_things(surface)
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82 class Thing(object):
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83 """Base class for things in a scene that you can interact with."""
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85 def __init__(self):
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86 pass
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88 def interact(self, item):
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89 pass
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91 def draw(self, surface):
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92 pass
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95 class Item(object):
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96 """Base class for inventory items."""
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97
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98 def __init__(self):
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99 pass
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100 # needs cursor
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