Mercurial > nagslang

annotate nagslang/render.py @ 474:9775055ba2f0

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Prettier bulkheads.
author Jeremy Thurgood <firxen@gmail.com>
date Sat, 07 Sep 2013 16:43:44 +0200
parents 803d53c86f7f
children ae8eb7c0f7bb
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1 import math
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2 import textwrap
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3
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4 import pygame
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5 import pygame.locals as pgl
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6 import pymunk
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7
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8 from nagslang.options import options
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9 from nagslang.utils import tile_surface, vec_from_angle
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10 from nagslang.widgets.text import LabelWidget, MultiLineWidget
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11
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12
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13 class Renderer(object):
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14 def set_game_object(self, game_object):
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15 self.game_object = game_object
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16
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17 def _render_shape(self, surface):
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18 shape = self.game_object.get_shape()
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19 # Less general that pymunk.pygame_util.draw, but also a lot less noisy.
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20 color = getattr(shape, 'color', pygame.color.THECOLORS['lightblue'])
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21 # We only explicitly draw Circle and Poly shapes. Everything else we
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22 # forward to pymunk.
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23 if isinstance(shape, pymunk.Circle):
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24 centre = pymunk.pygame_util.to_pygame(shape.body.position, surface)
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25 radius = int(shape.radius)
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26 pygame.draw.circle(surface, color, centre, radius, 2)
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27 elif isinstance(shape, pymunk.Poly):
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28 # polygon bounding box
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29 points = [pymunk.pygame_util.to_pygame(p, surface)
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30 for p in shape.get_vertices()]
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31 pygame.draw.lines(surface, color, True, points, 2)
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32 else:
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33 pymunk.pygame_util.draw(surface, shape)
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34
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35 def render(self, surface):
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36 if options.shapes:
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37 self._render_shape(surface)
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38
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39 def update(self, seconds):
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40 # Used by time animatations to advance the clock
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41 pass
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43
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44 class NullRenderer(Renderer):
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45 def render(self, surface):
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46 pass
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48
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49 class BulkheadRenderer(Renderer):
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50 def _offset_point(self, vec, to_vec, length):
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51 offset = vec_from_angle((to_vec - vec).angle, abs(length))
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52 if length < 0:
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53 offset = -offset
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54 return vec + offset
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55
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56 def _to_pygame(self, surface, *points):
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57 return [pymunk.pygame_util.to_pygame(p, surface) for p in points]
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58
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59 def draw_bulkhead_line(self, surface, a, b):
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60 ai = self._offset_point(a, b, 2)
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61 bi = self._offset_point(b, a, 2)
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62 a, b, ai, bi = self._to_pygame(surface, a, b, ai, bi)
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63 pygame.draw.line(
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64 surface, pygame.color.THECOLORS['black'], a, b, 8)
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65 pygame.draw.line(
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66 surface, pygame.color.THECOLORS['lightblue'], ai, bi, 6)
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67
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68 def render(self, surface):
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69 shape = self.game_object.get_shape()
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70 if self.game_object.puzzler.get_state():
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71 ai = self._offset_point(shape.a, shape.b, 10)
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72 bi = self._offset_point(shape.b, shape.a, 10)
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73 self.draw_bulkhead_line(surface, shape.a, ai)
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74 self.draw_bulkhead_line(surface, bi, shape.b)
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75 else:
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76 mid = shape.a + (shape.b - shape.a) / 2
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77 self.draw_bulkhead_line(surface, shape.a, mid)
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78 self.draw_bulkhead_line(surface, mid, shape.b)
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79
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80
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81 def image_pos(image, pos):
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82 return (pos[0] - image.get_width() / 2,
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83 pos[1] - image.get_height() / 2)
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84
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85
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86 class ImageRenderer(Renderer):
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87 def __init__(self, image):
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88 self._image = image
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89
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90 def get_image(self):
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91 return self._image
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92
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93 def rotate_image(self, image):
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94 angle = self.game_object.get_render_angle() * 180 / math.pi
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95 return pygame.transform.rotate(image, angle)
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96
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97 def render_image(self, surface, image):
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98 image = self.rotate_image(image)
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99 pos = self.game_object.get_render_position(surface)
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100 surface.blit(image, image_pos(image, pos))
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101
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102 def render(self, surface):
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103 self.render_image(surface, self.get_image())
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104 super(ImageRenderer, self).render(surface)
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105
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106
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107 class ImageStateRenderer(ImageRenderer):
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108 def __init__(self, state_images):
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109 self._state_images = state_images
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110
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111 def get_image(self):
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112 return self._state_images[self.game_object.puzzler.get_state()]
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113
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114
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115 class TimedAnimatedRenderer(ImageRenderer):
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116 def __init__(self, images, frame_ticks=1):
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117 self._images = images
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118 self._frame_ticks = frame_ticks
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119 self._frame_tick = 0
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120 self._frame = 0
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121
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122 def advance_tick(self):
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123 self._frame_tick += 1
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124 if self._frame_tick > self._frame_ticks:
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125 self._frame_tick = 0
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126 self._frame += 1
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127 if self._frame >= len(self._images):
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128 self._frame = 0
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129
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130 def reset(self):
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131 self._frame_tick = 0
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132 self._frame = 0
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133
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134 def get_image(self):
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135 return self._images[self._frame]
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136
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137 def update(self, seconds):
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138 self.advance_tick()
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139
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140
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141 class MovementAnimatedRenderer(TimedAnimatedRenderer):
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142 def update(self, seconds):
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143 if self.game_object.is_moving:
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144 self.advance_tick()
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145 else:
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146 self.reset()
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147
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148
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149 class RendererSelectionRenderer(Renderer):
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150 def __init__(self, renderers):
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151 self._renderers = renderers
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152
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153 def set_game_object(self, game_object):
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154 self.game_object = game_object
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155 for renderer in self._renderers.values():
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diff changeset
156 renderer.set_game_object(game_object)
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157
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158 @property
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159 def renderer(self):
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160 return self._renderers[self.select_renderer()]
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161
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162 def render(self, surface):
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163 return self.renderer.render(surface)
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164
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165 def update(self, seconds):
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166 return self.renderer.update(seconds)
217
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167
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168 def select_renderer(self):
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169 raise NotImplementedError()
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170
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171
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172 class FacingSelectionRenderer(RendererSelectionRenderer):
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173 def select_renderer(self):
229
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174 return self.game_object.get_facing_direction()
207
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175
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176
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177 class ShapeRenderer(Renderer):
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178 def render(self, surface):
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179 self._render_shape(surface)
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180 super(ShapeRenderer, self).render(surface)
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181
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182
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183 class ShapeStateRenderer(ShapeRenderer):
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184 """Renders the shape in a different colour depending on the state.
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185
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186 Requires the game object it's attached to to have a puzzler.
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187 """
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188 def render(self, surface):
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189 if self.game_object.puzzler.get_state():
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190 color = pygame.color.THECOLORS['green']
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191 else:
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192 color = pygame.color.THECOLORS['red']
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193
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194 self.game_object.get_shape().color = color
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195 super(ShapeStateRenderer, self).render(surface)
222
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196
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197
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198 class Overlay(object):
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199 def set_game_object(self, game_object):
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200 self.game_object = game_object
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201
396
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202 def render(self, surface, display_offset, max_width):
222
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203 pass
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204
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205 def is_visible(self):
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206 return self.game_object.puzzler.get_state()
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207
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208
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209 class TextOverlay(Overlay):
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210 def __init__(self, text):
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211 self.text = text
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212 self.widget = LabelWidget((20, 20), self.text)
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213
396
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214 def render(self, surface, display_offset, max_width):
222
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215 x, y = 20, 20
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216 if display_offset[0] < 0:
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217 x += abs(display_offset[0])
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218 if display_offset[1] < 0:
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219 y += abs(display_offset[1])
397
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220 if self.widget.rect.width > max_width - 40:
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221 # Need to relayout the widget
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222 factor = 2
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223 while self.widget.rect.width > max_width - 40:
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224 wrapped = '\n'.join(textwrap.wrap(self.text,
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225 len(self.text) // factor))
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226 factor *= 2
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227 self.widget = MultiLineWidget((20, 20), wrapped)
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228 if self.widget.rect.width < 100:
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229 # safety valve
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230 break
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231 self.widget.rect.topleft = (x, y)
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232 self.widget.draw(surface)
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233 # TODO: undo the mad folding
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234 else:
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235 self.widget.rect.topleft = (x, y)
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236 self.widget.draw(surface)
349
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237
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238
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239 class TiledRenderer(Renderer):
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240 """Tile the given image to fit the given outline
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241
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242 Outline is assumed to be in pymunk coordinates"""
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243
362
d0aeb893967d Transparent moonlight
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244 def __init__(self, outline, tile_image, alpha=255):
349
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245 self._tile_image = tile_image
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246 self.outline = outline
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247 self._tiled = None
353
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248 self._offset = None
362
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249 self._alpha = alpha
349
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diff changeset
250
400
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diff changeset
251 def _make_surface(self, surface, image):
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252 size = surface.get_size()
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253 mask = pygame.surface.Surface(size, pgl.SRCALPHA)
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254 pointlist = [pymunk.pygame_util.to_pygame(p, surface)
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255 for p in self.outline]
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256 rect = pygame.draw.polygon(mask,
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257 pygame.color.Color(
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258 255, 255, 255, self._alpha),
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259 pointlist, 0)
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diff changeset
260 self._offset = (rect.x, rect.y)
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261 tiled = tile_surface((rect.w, rect.h), image)
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262 tiled.blit(mask, (0, 0), rect,
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diff changeset
263 special_flags=pgl.BLEND_RGBA_MULT)
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264 return tiled
349
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265
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diff changeset
266 def render(self, surface):
400
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267 if not self._tiled:
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268 self._tiled = self._make_surface(surface, self._tile_image)
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diff changeset
269 surface.blit(self._tiled, self._offset)
349
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diff changeset
270 super(TiledRenderer, self).render(surface)
400
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271
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272
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diff changeset
273 class TimedTiledRenderer(TiledRenderer):
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274 """Animate tiles"""
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275
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276 # Should make this a mixin with TimeAnimate, but not right now
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277
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278 def __init__(self, outline, images, frame_ticks=1, alpha=255):
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279 self._images = images
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280 self._frame_ticks = frame_ticks
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281 self.outline = outline
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282 self._frames = [None] * len(images)
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283 self._offset = None
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284 self._alpha = alpha
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285 self._frame = 0
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286 self._frame_tick = 0
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287
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288 def advance_tick(self):
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289 self._frame_tick += 1
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290 if self._frame_tick > self._frame_ticks:
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291 self._frame_tick = 0
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292 self._frame += 1
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293 if self._frame >= len(self._images):
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294 self._frame = 0
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295
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296 def reset(self):
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297 self._frame_tick = 0
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298 self._frame = 0
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299
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diff changeset
300 def update(self, seconds):
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diff changeset
301 self.advance_tick()
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302
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303 def render(self, surface):
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diff changeset
304 if not self._frames[self._frame]:
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diff changeset
305 self._frames[self._frame] = self._make_surface(
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diff changeset
306 surface, self._images[self._frame])
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diff changeset
307 self._tiled = self._frames[self._frame]
4523b1ff17ae Hack together tile animation
Neil Muller <drnlmuller@gmail.com>
parents: 397
diff changeset
308 super(TimedTiledRenderer, self).render(surface)