source: nagslang/render.py@ 281:9b56e954c674

Last change on this file since 281:9b56e954c674 was 230:a3db94687ce2, checked in by Jeremy Thurgood <firxen@…>, 8 years ago

Remove unused stuff.

File size: 5.1 KB
Line 
1import math
2
3import pygame
4import pymunk
5
6from nagslang.options import options
7from nagslang.widgets.text import LabelWidget
8
9
10class Renderer(object):
11 def set_game_object(self, game_object):
12 self.game_object = game_object
13
14 def _render_shape(self, surface):
15 shape = self.game_object.get_shape()
16 # Less general that pymunk.pygame_util.draw, but also a lot less noisy.
17 color = getattr(shape, 'color', pygame.color.THECOLORS['lightblue'])
18 # We only explicitly draw Circle and Poly shapes. Everything else we
19 # forward to pymunk.
20 if isinstance(shape, pymunk.Circle):
21 centre = pymunk.pygame_util.to_pygame(shape.body.position, surface)
22 radius = int(shape.radius)
23 pygame.draw.circle(surface, color, centre, radius, 2)
24 elif isinstance(shape, pymunk.Poly):
25 # polygon bounding box
26 points = [pymunk.pygame_util.to_pygame(p, surface)
27 for p in shape.get_vertices()]
28 pygame.draw.lines(surface, color, True, points, 2)
29 else:
30 pymunk.pygame_util.draw(surface, shape)
31
32 def render(self, surface):
33 if options.debug:
34 self._render_shape(surface)
35
36 def animate(self):
37 # Used by time animatations to advance the clock
38 pass
39
40
41def image_pos(image, pos):
42 return (pos[0] - image.get_width() / 2,
43 pos[1] - image.get_height() / 2)
44
45
46class ImageRenderer(Renderer):
47 def __init__(self, image):
48 self._image = image
49
50 def get_image(self):
51 return self._image
52
53 def rotate_image(self, image):
54 angle = self.game_object.get_render_angle() * 180 / math.pi
55 return pygame.transform.rotate(image, angle)
56
57 def render_image(self, surface, image):
58 image = self.rotate_image(image)
59 pos = self.game_object.get_render_position(surface)
60 surface.blit(image, image_pos(image, pos))
61
62 def render(self, surface):
63 self.render_image(surface, self.get_image())
64 super(ImageRenderer, self).render(surface)
65
66
67class ImageStateRenderer(ImageRenderer):
68 def __init__(self, state_images):
69 self._state_images = state_images
70
71 def get_image(self):
72 return self._state_images[self.game_object.puzzler.get_state()]
73
74
75class TimedAnimatedRenderer(ImageRenderer):
76 def __init__(self, images, frame_ticks=1):
77 self._images = images
78 self._frame_ticks = frame_ticks
79 self._frame_tick = 0
80 self._frame = 0
81
82 def advance_tick(self):
83 self._frame_tick += 1
84 if self._frame_tick > self._frame_ticks:
85 self._frame_tick = 0
86 self._frame += 1
87 if self._frame >= len(self._images):
88 self._frame = 0
89
90 def reset(self):
91 self._frame_tick = 0
92 self._frame = 0
93
94 def get_image(self):
95 return self._images[self._frame]
96
97 def animate(self):
98 self.advance_tick()
99
100
101class MovementAnimatedRenderer(TimedAnimatedRenderer):
102 def animate(self):
103 if self.game_object.is_moving:
104 self.advance_tick()
105 else:
106 self.reset()
107
108
109class RendererSelectionRenderer(Renderer):
110 def __init__(self, renderers):
111 self._renderers = renderers
112
113 def set_game_object(self, game_object):
114 self.game_object = game_object
115 for renderer in self._renderers.values():
116 renderer.set_game_object(game_object)
117
118 @property
119 def renderer(self):
120 return self._renderers[self.select_renderer()]
121
122 def render(self, surface):
123 return self.renderer.render(surface)
124
125 def animate(self):
126 return self.renderer.animate()
127
128 def select_renderer(self):
129 raise NotImplementedError()
130
131
132class FacingSelectionRenderer(RendererSelectionRenderer):
133 def select_renderer(self):
134 return self.game_object.get_facing_direction()
135
136
137class ShapeRenderer(Renderer):
138 def render(self, surface):
139 self._render_shape(surface)
140 super(ShapeRenderer, self).render(surface)
141
142
143class ShapeStateRenderer(ShapeRenderer):
144 """Renders the shape in a different colour depending on the state.
145
146 Requires the game object it's attached to to have a puzzler.
147 """
148 def render(self, surface):
149 if self.game_object.puzzler.get_state():
150 color = pygame.color.THECOLORS['green']
151 else:
152 color = pygame.color.THECOLORS['red']
153
154 self.game_object.get_shape().color = color
155 super(ShapeStateRenderer, self).render(surface)
156
157
158class Overlay(object):
159 def set_game_object(self, game_object):
160 self.game_object = game_object
161
162 def render(self, surface, display_offset):
163 pass
164
165 def is_visible(self):
166 return self.game_object.puzzler.get_state()
167
168
169class TextOverlay(Overlay):
170 def __init__(self, text):
171 self.text = text
172 self.widget = LabelWidget((20, 20), self.text)
173
174 def render(self, surface, display_offset):
175 x, y = 20, 20
176 if display_offset[0] < 0:
177 x += abs(display_offset[0])
178 if display_offset[1] < 0:
179 y += abs(display_offset[1])
180 self.widget.rect.topleft = (x, y)
181 self.widget.draw(surface)
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