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annotate pytouhou/ui/sdl/gamerenderer.py @ 662:107bb5ca5cc8

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Implement Enemy::update(), which now renders the first fairy from stage 1 perfectly!
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sun, 11 Aug 2019 18:14:01 +0200
parents 0ea591b0b29e
children
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2011 Thibaut Girka <thib@sitedethib.com>
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; version 3 only.
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8 ##
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9 ## This program is distributed in the hope that it will be useful,
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10 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ## GNU General Public License for more details.
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13 ##
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14
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15 from itertools import chain
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16 from os.path import join
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17
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18 from pytouhou.lib.sdl import Rect, SDLError
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19
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20 from pytouhou.utils.helpers import get_logger
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21 logger = get_logger(__name__)
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22
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23
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24 class GameRenderer:
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25 def __init__(self, resource_loader, window):
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26 self.window = window
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27 self.texture_manager = TextureManager(resource_loader, self.window.win)
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28 font_name = join(resource_loader.game_dir, 'font.ttf')
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29 try:
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30 self.font_manager = FontManager(font_name, 16, self.window.win)
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31 except SDLError:
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32 self.font_manager = None
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33 logger.error('Font file “%s” not found, disabling text rendering altogether.', font_name)
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34
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35
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36 def load_textures(self, anms):
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37 self.texture_manager.load(anms)
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38
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39
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40 def load_background(self, background):
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41 if background is not None:
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42 logger.error('Background rendering unavailable in the SDL backend.')
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43
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44
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45 def start(self, common):
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46 pass
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47
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48
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49 def render(self, game):
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50 self.render_game(game)
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51 self.render_text(game.texts)
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52 self.render_interface(game.interface, game.boss)
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53
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54
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55 def render_game(self, game):
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56 x, y = game.interface.game_pos
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57 self.window.win.render_set_viewport(Rect(x, y, game.width, game.height))
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58 self.window.win.render_set_clip_rect(Rect(x, -y, game.width, game.height))
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59
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60 if game is not None:
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61 self.window.win.render_clear()
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62
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63 self.render_elements([enemy for enemy in game.enemies if enemy.visible])
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64 self.render_elements(game.effects)
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65 self.render_elements(chain(game.players_bullets,
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66 game.lasers_sprites(),
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67 game.players,
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68 game.msg_sprites()))
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69 self.render_elements(chain(game.bullets, game.lasers,
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70 game.cancelled_bullets, game.items,
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71 game.labels))
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72
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73
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74 def render_interface(self, interface, boss):
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75 interface_labels = interface.labels
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76 if 'framerate' in interface_labels:
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77 interface_labels['framerate'].set_text('%.2ffps' % self.window.get_fps())
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78
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79 self.window.win.render_set_viewport(Rect(0, 0, interface.width, interface.height))
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80 self.window.win.render_set_clip_rect(Rect(0, 0, interface.width, interface.height))
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81
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82 items = [item for item in interface.items if item.anmrunner and item.anmrunner.running]
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83 labels = interface_labels.values()
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84
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85 if items:
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86 # Redraw all the interface
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87 self.render_elements(items)
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88 else:
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89 # Redraw only changed labels
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90 labels = [label for label in labels if label.changed]
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91
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92 self.render_elements(interface.level_start)
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93
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94 if boss:
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95 self.render_elements(interface.boss_items)
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96
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97 self.render_elements(labels)
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98 for label in labels:
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99 label.changed = False
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100
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101
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102 def render_elements(self, elements):
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103 nb_vertices = 0
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104
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105 objects = chain(*[element.objects for element in elements])
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106 for element in objects:
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107 if nb_vertices >= MAX_ELEMENTS - 4:
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108 break
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109
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110 sprite = element.sprite
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111 if sprite and sprite.visible:
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112 ox, oy = element.x, element.y
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113 data = get_sprite_rendering_data(sprite)
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114
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115 #XXX
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116 texture_width = 256
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117 texture_height = 256
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118
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119 source = Rect(data.left * texture_width,
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120 data.bottom * texture_height,
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121 (data.right - data.left) * texture_width,
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122 (data.top - data.bottom) * texture_height)
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123
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124 dest = Rect(ox + data.x, oy + data.y, data.width, data.height)
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125
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126 texture = sprite.anm.texture
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127 texture.set_color_mod(data.r, data.g, data.b)
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128 texture.set_alpha_mod(data.a)
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129 texture.set_blend_mode(2 if data.blendfunc else 1)
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130
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131 if data.rotation or data.flip:
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132 self.window.win.render_copy_ex(texture, source, dest, data.rotation, data.flip)
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133 else:
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134 self.window.win.render_copy(texture, source, dest)
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135
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136 nb_vertices += 4
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137
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138
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139 def render_text(self, texts):
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140 if self.font_manager is None:
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141 return False
544
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142
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143 self.font_manager.load(texts)
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144
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145 for label in texts.values():
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146 texture = label.texture
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147
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148 source = Rect(0, 0, label.width, label.height)
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149 rect = Rect(label.x, label.y, label.width, label.height)
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150
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151 texture.set_alpha_mod(label.alpha)
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152
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153 if label.shadow:
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154 shadow_rect = Rect(label.x + 1, label.y + 1, label.width, label.height)
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155 texture.set_color_mod(0, 0, 0)
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156 self.window.win.render_copy(label.texture, source, shadow_rect)
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157 texture.set_color_mod(192, 192, 255)
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158 self.window.win.render_copy(label.texture, source, rect)
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159 else:
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160 texture.set_color_mod(192, 192, 255)
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161 self.window.win.render_copy(label.texture, source, rect)