Mercurial > nagslang

annotate nagslang/render.py @ 647:aeb366d97774

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Show splash image on startup
author Stefano Rivera <stefano@rivera.za.net>
date Sun, 08 Sep 2013 02:02:09 +0200
parents 9ea26b835271
children
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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 (
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10 tile_surface, vec_from_angle, points_to_pygame, extend_line)
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11 from nagslang.widgets.text import LabelWidget, MultiLineWidget
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12
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13
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14 class Renderer(object):
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15 def set_game_object(self, game_object):
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16 self.game_object = game_object
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17
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18 def _render_shape(self, surface):
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19 shape = self.game_object.get_shape()
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20 # Less general that pymunk.pygame_util.draw, but also a lot less noisy.
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21 color = getattr(shape, 'color', pygame.color.THECOLORS['lightblue'])
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22 # We only explicitly draw Circle and Poly shapes. Everything else we
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23 # forward to pymunk.
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24 if isinstance(shape, pymunk.Circle):
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25 centre = pymunk.pygame_util.to_pygame(shape.body.position, surface)
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26 radius = int(shape.radius)
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27 pygame.draw.circle(surface, color, centre, radius, 2)
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28 elif isinstance(shape, pymunk.Poly):
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29 # polygon bounding box
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30 points = [pymunk.pygame_util.to_pygame(p, surface)
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31 for p in shape.get_vertices()]
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32 pygame.draw.lines(surface, color, True, points, 2)
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33 else:
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34 pymunk.pygame_util.draw(surface, shape)
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35
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36 def render(self, surface):
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37 if options.shapes:
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38 self._render_shape(surface)
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39
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40 def update(self, seconds):
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41 # Used by time animatations to advance the clock
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42 pass
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44
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45 class NullRenderer(Renderer):
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46 def render(self, surface):
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47 pass
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48
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49
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50 class HatchRendererMixin(object):
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51 def draw_hatch_line(self, surface, a, b):
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52 ai, bi = extend_line(a, b, -2)
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53 a, b, ai, bi = points_to_pygame(surface, (a, b, ai, bi))
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54 pygame.draw.line(
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55 surface, pygame.color.THECOLORS['black'], a, b, 7)
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56 pygame.draw.line(
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57 surface, pygame.color.THECOLORS['lightblue'], ai, bi, 5)
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58
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59 def render_hatch(self, surface):
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60 shape = self.game_object.get_shape()
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61 a = shape.body.local_to_world(shape.a)
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62 b = shape.body.local_to_world(shape.b)
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63 if self.game_object.puzzler.get_state():
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64 offset = vec_from_angle((b - a).angle, 10)
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65 ai = a + offset
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66 bi = b - offset
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67 self.draw_hatch_line(surface, a, ai)
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68 self.draw_hatch_line(surface, bi, b)
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69 else:
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70 mid = a + (b - a) / 2
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71 self.draw_hatch_line(surface, a, mid)
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72 self.draw_hatch_line(surface, mid, b)
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74
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75 class HatchRenderer(Renderer, HatchRendererMixin):
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76 def render(self, surface):
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77 self.render_hatch(surface)
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79
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80 def image_pos(image, pos):
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81 return (pos[0] - image.get_width() / 2,
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82 pos[1] - image.get_height() / 2)
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83
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84
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85 class ImageRenderer(Renderer):
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86 def __init__(self, image):
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87 self._image = image
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88
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89 def get_image(self):
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90 return self._image
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91
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92 def rotate_image(self, image):
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93 angle = self.game_object.get_render_angle() * 180 / math.pi
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94 return pygame.transform.rotate(image, angle)
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95
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96 def render_image(self, surface, image):
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97 image = self.rotate_image(image)
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98 pos = self.game_object.get_render_position(surface)
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99 surface.blit(image, image_pos(image, pos))
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100
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101 def render(self, surface):
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102 self.render_image(surface, self.get_image())
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103 super(ImageRenderer, self).render(surface)
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104
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105
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106 class KeyedHatchRenderer(ImageRenderer, HatchRendererMixin):
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107 def render(self, surface):
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108 self.render_hatch(surface)
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109 if not self.game_object.puzzler.get_state():
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110 self.render_image(surface, self.get_image())
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111
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112
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113 class ImageStateRenderer(ImageRenderer):
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114 def __init__(self, state_images):
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115 self._state_images = state_images
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116
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117 def get_image(self):
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118 return self._state_images[self.game_object.puzzler.get_state()]
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119
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120
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121 class TimedAnimatedRenderer(ImageRenderer):
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122 def __init__(self, images, frame_ticks=1):
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123 self._images = images
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124 self._frame_ticks = frame_ticks
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125 self._frame_tick = 0
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126 self._frame = 0
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127
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128 def advance_tick(self):
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129 self._frame_tick += 1
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130 if self._frame_tick > self._frame_ticks:
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131 self._frame_tick = 0
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132 self._frame += 1
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133 if self._frame >= len(self._images):
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134 self._frame = 0
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135
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136 def reset(self):
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137 self._frame_tick = 0
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138 self._frame = 0
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139
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140 def get_image(self):
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141 return self._images[self._frame]
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142
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143 def update(self, seconds):
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144 self.advance_tick()
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145
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146
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147 class MovementAnimatedRenderer(TimedAnimatedRenderer):
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148 def update(self, seconds):
218
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149 if self.game_object.is_moving:
217
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150 self.advance_tick()
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151 else:
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152 self.reset()
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153
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154
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155 class RendererSelectionRenderer(Renderer):
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156 def __init__(self, renderers):
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157 self._renderers = renderers
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158
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159 def set_game_object(self, game_object):
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160 self.game_object = game_object
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161 for renderer in self._renderers.values():
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162 renderer.set_game_object(game_object)
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163
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164 @property
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165 def renderer(self):
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166 return self._renderers[self.select_renderer()]
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167
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168 def render(self, surface):
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169 return self.renderer.render(surface)
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170
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171 def update(self, seconds):
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172 return self.renderer.update(seconds)
217
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173
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174 def select_renderer(self):
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175 raise NotImplementedError()
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176
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177
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178 class FacingSelectionRenderer(RendererSelectionRenderer):
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179 def select_renderer(self):
229
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180 return self.game_object.get_facing_direction()
207
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181
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182
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183 class ShapeRenderer(Renderer):
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184 def render(self, surface):
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185 self._render_shape(surface)
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186 super(ShapeRenderer, self).render(surface)
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187
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188
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189 class ShapeStateRenderer(ShapeRenderer):
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190 """Renders the shape in a different colour depending on the state.
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191
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192 Requires the game object it's attached to to have a puzzler.
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193 """
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194 def render(self, surface):
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195 if self.game_object.puzzler.get_state():
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196 color = pygame.color.THECOLORS['green']
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197 else:
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198 color = pygame.color.THECOLORS['red']
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199
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200 self.game_object.get_shape().color = color
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201 super(ShapeStateRenderer, self).render(surface)
222
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202
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203
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204 class Overlay(object):
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205 def set_game_object(self, game_object):
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206 self.game_object = game_object
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207
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208 def render(self, surface, display_offset, max_width):
222
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209 pass
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210
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211 def is_visible(self):
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212 return self.game_object.puzzler.get_state()
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213
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214
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215 class TextOverlay(Overlay):
521
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216 def __init__(self, text, **kwargs):
222
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217 self.text = text
521
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218 self.widget = LabelWidget((20, 20), self.text, **kwargs)
222
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219
396
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220 def render(self, surface, display_offset, max_width):
222
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221 x, y = 20, 20
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222 if display_offset[0] < 0:
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223 x += abs(display_offset[0])
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224 if display_offset[1] < 0:
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225 y += abs(display_offset[1])
397
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226 if self.widget.rect.width > max_width - 40:
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227 # Need to relayout the widget
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228 factor = 2
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229 while self.widget.rect.width > max_width - 40:
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230 wrapped = '\n'.join(textwrap.wrap(self.text,
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231 len(self.text) // factor))
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232 factor *= 2
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233 self.widget = MultiLineWidget((20, 20), wrapped)
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234 if self.widget.rect.width < 100:
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235 # safety valve
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236 break
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237 self.widget.rect.topleft = (x, y)
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238 self.widget.draw(surface)
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239 # TODO: undo the mad folding
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240 else:
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241 self.widget.rect.topleft = (x, y)
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242 self.widget.draw(surface)
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243
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244
647
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245 class ImageOverlay(Overlay):
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246 def __init__(self, image):
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247 self.image = image
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248
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249 def render(self, surface, display_offset, max_width):
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250 x = (surface.get_width() - self.image.get_width()) / 2
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251 y = (surface.get_height() - self.image.get_height()) / 2
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252 surface.blit(self.image, (x, y))
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253
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254
349
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255 class TiledRenderer(Renderer):
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256 """Tile the given image to fit the given outline
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257
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258 Outline is assumed to be in pymunk coordinates"""
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259
362
d0aeb893967d Transparent moonlight
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260 def __init__(self, outline, tile_image, alpha=255):
349
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261 self._tile_image = tile_image
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262 self.outline = outline
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263 self._tiled = None
353
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264 self._offset = None
362
d0aeb893967d Transparent moonlight
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265 self._alpha = alpha
349
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diff changeset
266
400
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267 def _make_surface(self, surface, image):
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268 size = surface.get_size()
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269 mask = pygame.surface.Surface(size, pgl.SRCALPHA)
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270 pointlist = [pymunk.pygame_util.to_pygame(p, surface)
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271 for p in self.outline]
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272 rect = pygame.draw.polygon(mask,
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273 pygame.color.Color(
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274 255, 255, 255, self._alpha),
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275 pointlist, 0)
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276 self._offset = (rect.x, rect.y)
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277 tiled = tile_surface((rect.w, rect.h), image)
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278 tiled.blit(mask, (0, 0), rect,
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diff changeset
279 special_flags=pgl.BLEND_RGBA_MULT)
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280 return tiled
349
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281
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282 def render(self, surface):
400
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283 if not self._tiled:
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284 self._tiled = self._make_surface(surface, self._tile_image)
353
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diff changeset
285 surface.blit(self._tiled, self._offset)
349
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diff changeset
286 super(TiledRenderer, self).render(surface)
400
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287
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288
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289 class TimedTiledRenderer(TiledRenderer):
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290 """Animate tiles"""
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291
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292 # Should make this a mixin with TimeAnimate, but not right now
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293
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294 def __init__(self, outline, images, frame_ticks=1, alpha=255):
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295 self._images = images
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296 self._frame_ticks = frame_ticks
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297 self.outline = outline
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298 self._frames = [None] * len(images)
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299 self._offset = None
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300 self._alpha = alpha
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diff changeset
301 self._frame = 0
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302 self._frame_tick = 0
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303
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diff changeset
304 def advance_tick(self):
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305 self._frame_tick += 1
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306 if self._frame_tick > self._frame_ticks:
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307 self._frame_tick = 0
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308 self._frame += 1
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309 if self._frame >= len(self._images):
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310 self._frame = 0
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311
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312 def reset(self):
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313 self._frame_tick = 0
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314 self._frame = 0
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315
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316 def update(self, seconds):
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317 self.advance_tick()
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318
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319 def render(self, surface):
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320 if not self._frames[self._frame]:
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321 self._frames[self._frame] = self._make_surface(
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322 surface, self._images[self._frame])
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323 self._tiled = self._frames[self._frame]
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324 super(TimedTiledRenderer, self).render(surface)