Mercurial > nagslang

annotate nagslang/render.py @ 569:f735665c359e

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Only save state when PuzzleDoor is activated, not on update.
author Jeremy Thurgood <firxen@gmail.com>
date Sat, 07 Sep 2013 22:39:16 +0200
parents 4abf8cf717e9
children 9ea26b835271
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207
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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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43
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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 HatchRenderer(Renderer):
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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(self, surface):
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60 shape = self.game_object.get_shape()
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61 if self.game_object.puzzler.get_state():
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62 offset = vec_from_angle((shape.b - shape.a).angle, 10)
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63 ai = shape.a + offset
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64 bi = shape.b - offset
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65 self.draw_hatch_line(surface, shape.a, ai)
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66 self.draw_hatch_line(surface, bi, shape.b)
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67 else:
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68 mid = shape.a + (shape.b - shape.a) / 2
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69 self.draw_hatch_line(surface, shape.a, mid)
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70 self.draw_hatch_line(surface, mid, shape.b)
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71
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72
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73 def image_pos(image, pos):
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74 return (pos[0] - image.get_width() / 2,
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75 pos[1] - image.get_height() / 2)
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76
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77
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78 class ImageRenderer(Renderer):
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79 def __init__(self, image):
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80 self._image = image
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81
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82 def get_image(self):
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83 return self._image
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84
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85 def rotate_image(self, image):
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86 angle = self.game_object.get_render_angle() * 180 / math.pi
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87 return pygame.transform.rotate(image, angle)
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88
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89 def render_image(self, surface, image):
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90 image = self.rotate_image(image)
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91 pos = self.game_object.get_render_position(surface)
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92 surface.blit(image, image_pos(image, pos))
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93
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94 def render(self, surface):
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95 self.render_image(surface, self.get_image())
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96 super(ImageRenderer, self).render(surface)
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97
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98
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99 class ImageStateRenderer(ImageRenderer):
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100 def __init__(self, state_images):
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101 self._state_images = state_images
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102
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103 def get_image(self):
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104 return self._state_images[self.game_object.puzzler.get_state()]
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105
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106
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107 class TimedAnimatedRenderer(ImageRenderer):
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108 def __init__(self, images, frame_ticks=1):
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109 self._images = images
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110 self._frame_ticks = frame_ticks
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111 self._frame_tick = 0
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112 self._frame = 0
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113
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114 def advance_tick(self):
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115 self._frame_tick += 1
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116 if self._frame_tick > self._frame_ticks:
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117 self._frame_tick = 0
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118 self._frame += 1
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119 if self._frame >= len(self._images):
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120 self._frame = 0
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121
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122 def reset(self):
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123 self._frame_tick = 0
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124 self._frame = 0
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125
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126 def get_image(self):
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127 return self._images[self._frame]
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128
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129 def update(self, seconds):
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130 self.advance_tick()
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131
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132
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133 class MovementAnimatedRenderer(TimedAnimatedRenderer):
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134 def update(self, seconds):
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135 if self.game_object.is_moving:
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136 self.advance_tick()
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137 else:
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138 self.reset()
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139
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140
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141 class RendererSelectionRenderer(Renderer):
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142 def __init__(self, renderers):
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143 self._renderers = renderers
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144
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145 def set_game_object(self, game_object):
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146 self.game_object = game_object
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147 for renderer in self._renderers.values():
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148 renderer.set_game_object(game_object)
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149
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150 @property
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151 def renderer(self):
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152 return self._renderers[self.select_renderer()]
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153
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154 def render(self, surface):
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155 return self.renderer.render(surface)
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156
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157 def update(self, seconds):
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158 return self.renderer.update(seconds)
217
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159
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160 def select_renderer(self):
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161 raise NotImplementedError()
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162
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163
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164 class FacingSelectionRenderer(RendererSelectionRenderer):
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165 def select_renderer(self):
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166 return self.game_object.get_facing_direction()
207
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167
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168
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169 class ShapeRenderer(Renderer):
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170 def render(self, surface):
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171 self._render_shape(surface)
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172 super(ShapeRenderer, self).render(surface)
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173
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174
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175 class ShapeStateRenderer(ShapeRenderer):
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176 """Renders the shape in a different colour depending on the state.
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177
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178 Requires the game object it's attached to to have a puzzler.
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179 """
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180 def render(self, surface):
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181 if self.game_object.puzzler.get_state():
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182 color = pygame.color.THECOLORS['green']
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183 else:
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184 color = pygame.color.THECOLORS['red']
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185
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186 self.game_object.get_shape().color = color
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187 super(ShapeStateRenderer, self).render(surface)
222
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188
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189
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190 class Overlay(object):
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191 def set_game_object(self, game_object):
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192 self.game_object = game_object
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193
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194 def render(self, surface, display_offset, max_width):
222
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195 pass
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196
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197 def is_visible(self):
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198 return self.game_object.puzzler.get_state()
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199
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200
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201 class TextOverlay(Overlay):
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202 def __init__(self, text, **kwargs):
222
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203 self.text = text
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204 self.widget = LabelWidget((20, 20), self.text, **kwargs)
222
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205
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206 def render(self, surface, display_offset, max_width):
222
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207 x, y = 20, 20
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208 if display_offset[0] < 0:
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209 x += abs(display_offset[0])
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210 if display_offset[1] < 0:
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211 y += abs(display_offset[1])
397
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212 if self.widget.rect.width > max_width - 40:
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213 # Need to relayout the widget
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214 factor = 2
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215 while self.widget.rect.width > max_width - 40:
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216 wrapped = '\n'.join(textwrap.wrap(self.text,
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217 len(self.text) // factor))
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218 factor *= 2
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219 self.widget = MultiLineWidget((20, 20), wrapped)
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220 if self.widget.rect.width < 100:
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221 # safety valve
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222 break
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223 self.widget.rect.topleft = (x, y)
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224 self.widget.draw(surface)
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225 # TODO: undo the mad folding
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226 else:
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227 self.widget.rect.topleft = (x, y)
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228 self.widget.draw(surface)
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229
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230
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231 class TiledRenderer(Renderer):
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232 """Tile the given image to fit the given outline
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233
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234 Outline is assumed to be in pymunk coordinates"""
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235
362
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236 def __init__(self, outline, tile_image, alpha=255):
349
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237 self._tile_image = tile_image
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238 self.outline = outline
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239 self._tiled = None
353
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240 self._offset = None
362
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241 self._alpha = alpha
349
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242
400
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243 def _make_surface(self, surface, image):
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244 size = surface.get_size()
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245 mask = pygame.surface.Surface(size, pgl.SRCALPHA)
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246 pointlist = [pymunk.pygame_util.to_pygame(p, surface)
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247 for p in self.outline]
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248 rect = pygame.draw.polygon(mask,
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249 pygame.color.Color(
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250 255, 255, 255, self._alpha),
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251 pointlist, 0)
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252 self._offset = (rect.x, rect.y)
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253 tiled = tile_surface((rect.w, rect.h), image)
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254 tiled.blit(mask, (0, 0), rect,
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255 special_flags=pgl.BLEND_RGBA_MULT)
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256 return tiled
349
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257
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diff changeset
258 def render(self, surface):
400
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259 if not self._tiled:
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260 self._tiled = self._make_surface(surface, self._tile_image)
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diff changeset
261 surface.blit(self._tiled, self._offset)
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diff changeset
262 super(TiledRenderer, self).render(surface)
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263
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264
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265 class TimedTiledRenderer(TiledRenderer):
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266 """Animate tiles"""
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267
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268 # Should make this a mixin with TimeAnimate, but not right now
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269
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270 def __init__(self, outline, images, frame_ticks=1, alpha=255):
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271 self._images = images
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272 self._frame_ticks = frame_ticks
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273 self.outline = outline
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274 self._frames = [None] * len(images)
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275 self._offset = None
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276 self._alpha = alpha
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277 self._frame = 0
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278 self._frame_tick = 0
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279
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280 def advance_tick(self):
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281 self._frame_tick += 1
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282 if self._frame_tick > self._frame_ticks:
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283 self._frame_tick = 0
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284 self._frame += 1
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285 if self._frame >= len(self._images):
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286 self._frame = 0
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287
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288 def reset(self):
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289 self._frame_tick = 0
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290 self._frame = 0
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291
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292 def update(self, seconds):
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293 self.advance_tick()
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294
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295 def render(self, surface):
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diff changeset
296 if not self._frames[self._frame]:
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297 self._frames[self._frame] = self._make_surface(
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298 surface, self._images[self._frame])
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diff changeset
299 self._tiled = self._frames[self._frame]
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diff changeset
300 super(TimedTiledRenderer, self).render(surface)