Mercurial > nagslang

comparison nagslang/game_object.py @ 59:b412704a6737

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Start of game object stuff.
author Jeremy Thurgood <firxen@gmail.com>
date Sun, 01 Sep 2013 18:48:55 +0200
parents
children 34a87ec12124
comparison
equal deleted inserted replaced
58:cee0b845dedc 59:b412704a6737
1
2 class Physicser(object):
3 def add_to_space(self, space):
4 raise NotImplementedError()
5
6 def remove_from_space(self, space):
7 raise NotImplementedError()
8
9 def render_position(self):
10 raise NotImplementedError()
11
12
13 class NullPhysicser(Physicser):
14 def add_to_space(self, space):
15 pass
16
17 def remove_from_space(self, space):
18 pass
19
20 def render_position(self):
21 return (0, 0)
22
23
24 class SingleShapePhysicser(Physicser):
25 def __init__(self, shape):
26 self._shape = shape
27
28 def add_to_space(self, space):
29 space.add(self._shape, self._shape.body)
30
31 def remove_from_space(self, space):
32 space.remove(self._shape, self._shape.body)
33
34 def render_position(self, surface):
35 pos = self._shape.body.position
36 import pymunk.pygame_util
37 return pymunk.pygame_util.to_pygame(pos, surface)
38 return (int(pos.x), int(pos.y))
39
40
41 class Renderer(object):
42 def render(self, surface, pos):
43 raise NotImplementedError()
44
45
46 class ImageRenderer(Renderer):
47 def __init__(self, image):
48 self._image = image
49
50 def render(self, surface, pos):
51 surface.blit(self._image, pos)
52
53
54 class ShapeRenderer(Renderer):
55 def __init__(self, shape):
56 self._shape = shape
57
58 def render(self, surface, pos):
59 import pymunk.pygame_util
60 pymunk.pygame_util.draw(surface, self._shape)
61
62
63 class GameObject(object):
64 """A representation of a thing in the game world.
65
66 This has a rendery thing, physicsy things and maybe some other things.
67 """
68
69 def __init__(self, renderer, physicser=None):
70 self.renderer = renderer
71 if physicser is None:
72 physicser = NullPhysicser()
73 self.physicser = physicser
74
75 def add_to_space(self, space):
76 self.physicser.add_to_space(space)
77
78 def render(self, surface):
79 return self.renderer.render(surface, self.physicser.render_position(surface))