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annotate pytouhou/ui/window.pyx @ 452:1f5156093785

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By default, only enable fps limiting if vsync doesn't do the job.
author Thibaut Girka <thib@sitedethib.com>
date Fri, 30 Aug 2013 20:38:02 +0200
parents 2a352118c55a
children 6864a38b2413
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2013 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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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
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16 from pytouhou.lib import sdl
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17
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18 from pytouhou.lib.opengl cimport \
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19 (glEnable, glHint, glEnableClientState, GL_TEXTURE_2D, GL_BLEND,
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20 GL_PERSPECTIVE_CORRECTION_HINT, GL_FOG_HINT, GL_NICEST,
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21 GL_COLOR_ARRAY, GL_VERTEX_ARRAY, GL_TEXTURE_COORD_ARRAY)
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22
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23 IF USE_GLEW:
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24 from pytouhou.lib.opengl cimport glewInit
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25
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26
452
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27 class Clock:
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28 def __init__(self, fps=None):
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29 self._target_fps = 0
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30 self._ref_tick = 0
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31 self._ref_frame = 0
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32 self._fps_tick = 0
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33 self._fps_frame = 0
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34 self._rate = 0
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35 self.set_target_fps(fps)
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36
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37
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38 def set_target_fps(self, fps):
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39 self._target_fps = fps
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40 self._ref_tick = 0
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41 self._fps_tick = 0
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42
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43
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44 def get_fps(self):
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45 return self._rate
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46
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47
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48 def tick(self):
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49 current = sdl.get_ticks()
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50
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51 if not self._ref_tick:
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52 self._ref_tick = current
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53 self._ref_frame = 0
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54
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55 if self._fps_frame >= (self._target_fps if self._target_fps > 0 else 60):
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56 self._rate = self._fps_frame * 1000. / (current - self._fps_tick)
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57 self._fps_tick = current
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58 self._fps_frame = 0
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59 # If we are relying on vsync, but vsync doesn't work or is higher
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60 # than 60 fps, limit ourselves to 60 fps.
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61 if self._target_fps < 0 and self._rate > 64.:
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62 self._target_fps = 60
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63
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64 self._ref_frame += 1
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65 self._fps_frame += 1
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66
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67 target_tick = self._ref_tick
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68 if self._target_fps:
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69 target_tick += int(self._ref_frame * 1000 / self._target_fps)
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70
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71 if current <= target_tick:
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72 sdl.delay(target_tick - current)
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73 else:
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74 self._ref_tick = current
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75 self._ref_frame = 0
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76
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77
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78
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79 class Window(object):
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80 def __init__(self, size=None, double_buffer=True, fps_limit=60,
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81 fixed_pipeline=False, sound=True):
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82 self.fps_limit = fps_limit
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83 self.use_fixed_pipeline = fixed_pipeline
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84 self.runner = None
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85
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86 IF UNAME_SYSNAME == "Windows":
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87 sdl.set_main_ready()
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88 sdl.init(sdl.INIT_VIDEO)
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89 sdl.img_init(sdl.INIT_PNG)
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90 if sound:
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91 sdl.mix_init(0)
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92
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93 sdl.gl_set_attribute(sdl.GL_CONTEXT_MAJOR_VERSION, 2)
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94 sdl.gl_set_attribute(sdl.GL_CONTEXT_MINOR_VERSION, 1)
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95 sdl.gl_set_attribute(sdl.GL_DOUBLEBUFFER, int(double_buffer))
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96 sdl.gl_set_attribute(sdl.GL_DEPTH_SIZE, 24)
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97
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98 self.width, self.height = size if size else (640, 480)
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99
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100 self.win = sdl.Window('PyTouhou',
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101 sdl.WINDOWPOS_CENTERED, sdl.WINDOWPOS_CENTERED,
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102 self.width, self.height,
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103 sdl.WINDOW_OPENGL | sdl.WINDOW_SHOWN)
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104 self.win.gl_create_context()
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105
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106 IF USE_GLEW:
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107 if glewInit() != 0:
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108 raise Exception('GLEW init fail!')
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109
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110 # Initialize OpenGL
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111 glEnable(GL_BLEND)
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112 if self.use_fixed_pipeline:
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113 glEnable(GL_TEXTURE_2D)
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114 glHint(GL_FOG_HINT, GL_NICEST)
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115 glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST)
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116 glEnableClientState(GL_COLOR_ARRAY)
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117 glEnableClientState(GL_VERTEX_ARRAY)
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118 glEnableClientState(GL_TEXTURE_COORD_ARRAY)
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119
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120 # Initialize sound
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121 if sound:
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122 sdl.mix_open_audio(44100, sdl.DEFAULT_FORMAT, 2, 4096)
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123 sdl.mix_allocate_channels(26) #TODO: make it dependent on the SFX number.
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124
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125 self.clock = Clock(self.fps_limit)
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126
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127
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128 def set_size(self, width, height):
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129 self.win.set_window_size(width, height)
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130
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131
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132 def set_runner(self, runner):
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133 self.runner = runner
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134 runner.start()
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135
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136
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137 def run(self):
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138 try:
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139 while self.run_frame():
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140 pass
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141 finally:
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142 self.runner.finish()
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143
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144
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145 def run_frame(self):
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146 if self.runner:
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147 running = self.runner.update()
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148 self.win.gl_swap_window()
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149 self.clock.tick()
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150 return running
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151
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152
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153 def __dealloc__(self):
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154 self.win.gl_delete_context()
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155 self.win.destroy_window()
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156 sdl.mix_close_audio()
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157 sdl.mix_quit()
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158 sdl.img_quit()
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159 sdl.quit()