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annotate pytouhou/lib/sdl.pyx @ 420:3a7b36324611

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Replace Pyglet’s image loader with our SDL2_image-based one.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Tue, 16 Jul 2013 21:07:15 +0200
parents 1c92721f8e49
children b1248bab2d0f
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418
63f59be04a54 Replace Pyglet with SDL2 for window creation and events; disables framerate control/display and sound.
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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 INIT_VIDEO = SDL_INIT_VIDEO
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16 INIT_PNG = IMG_INIT_PNG
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17
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18 GL_CONTEXT_MAJOR_VERSION = SDL_GL_CONTEXT_MAJOR_VERSION
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19 GL_CONTEXT_MINOR_VERSION = SDL_GL_CONTEXT_MINOR_VERSION
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20 GL_DOUBLEBUFFER = SDL_GL_DOUBLEBUFFER
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21 GL_DEPTH_SIZE = SDL_GL_DEPTH_SIZE
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22
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23 WINDOWPOS_CENTERED = SDL_WINDOWPOS_CENTERED
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24 WINDOW_OPENGL = SDL_WINDOW_OPENGL
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25 WINDOW_SHOWN = SDL_WINDOW_SHOWN
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26
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27 SCANCODE_Z = SDL_SCANCODE_Z
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28 SCANCODE_X = SDL_SCANCODE_X
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29 SCANCODE_LSHIFT = SDL_SCANCODE_LSHIFT
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30 SCANCODE_UP = SDL_SCANCODE_UP
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31 SCANCODE_DOWN = SDL_SCANCODE_DOWN
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32 SCANCODE_LEFT = SDL_SCANCODE_LEFT
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33 SCANCODE_RIGHT = SDL_SCANCODE_RIGHT
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34 SCANCODE_LCTRL = SDL_SCANCODE_LCTRL
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35 SCANCODE_ESCAPE = SDL_SCANCODE_ESCAPE
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36
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37 KEYDOWN = SDL_KEYDOWN
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38 QUIT = SDL_QUIT
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39
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40
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41 class SDLError(Exception):
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42 pass
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43
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44
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45 cdef class Window:
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46 cdef SDL_Window *window
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47 cdef SDL_GLContext context
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48
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49 def __init__(self, const char *title, int x, int y, int w, int h, Uint32 flags):
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50 self.window = SDL_CreateWindow(title, x, y, w, h, flags)
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51 if self.window == NULL:
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52 raise SDLError(SDL_GetError())
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53
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54 def destroy_window(self):
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55 SDL_DestroyWindow(self.window)
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56
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57 def gl_create_context(self):
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58 self.context = SDL_GL_CreateContext(self.window)
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59
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60 def gl_swap_window(self):
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61 SDL_GL_SwapWindow(self.window)
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62
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63 def gl_delete_context(self):
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64 SDL_GL_DeleteContext(self.context)
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65
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66
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67 cdef class Surface:
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68 cdef SDL_Surface *surface
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69
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70 def __dealloc__(self):
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71 if self.surface != NULL:
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72 SDL_FreeSurface(self.surface)
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73
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74 property width:
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75 def __get__(self):
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76 return self.surface.w
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77
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78 property height:
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79 def __get__(self):
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80 return self.surface.h
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81
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82 property pixels:
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83 def __get__(self):
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84 return bytes(self.surface.pixels[:self.surface.w * self.surface.h * 4])
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85
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86 def blit(self, Surface other):
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87 if SDL_BlitSurface(other.surface, NULL, self.surface, NULL) < 0:
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88 raise SDLError(SDL_GetError())
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89
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90 def set_alpha(self, Surface alpha_surface):
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91 nb_pixels = self.surface.w * self.surface.h
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92 image = self.surface.pixels
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93 alpha = alpha_surface.surface.pixels
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94
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95 for i in xrange(nb_pixels):
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96 # Only use the red value, assume the others are equal.
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97 image[3+4*i] = alpha[3*i]
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98
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99
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100 def init(Uint32 flags):
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101 if SDL_Init(flags) < 0:
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102 raise SDLError(SDL_GetError())
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103
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104
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105 def img_init(Uint32 flags):
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106 if IMG_Init(flags) != flags:
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107 raise SDLError(SDL_GetError())
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108
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109
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110 def quit():
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111 SDL_Quit()
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112
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113
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114 def img_quit():
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115 IMG_Quit()
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116
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117
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118 def gl_set_attribute(SDL_GLattr attr, int value):
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119 if SDL_GL_SetAttribute(attr, value) < 0:
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120 raise SDLError(SDL_GetError())
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121
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122
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123 def poll_events():
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124 cdef SDL_Event event
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125 ret = []
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126 while SDL_PollEvent(&event):
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127 if event.type == SDL_KEYDOWN:
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128 ret.append((event.type, event.key.keysym.scancode))
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129 elif event.type == SDL_QUIT:
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130 ret.append((event.type,))
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131 return ret
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132
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133
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134 def get_keyboard_state():
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135 cdef int numkeys
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136 cdef bint k
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137 cdef const Uint8 *state
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138 state = SDL_GetKeyboardState(&numkeys)
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139 return tuple([k is not False for k in state[:numkeys]])
419
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140
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141
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142 def load_png(file_):
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143 data = file_.read()
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144 rwops = SDL_RWFromConstMem(<char*>data, len(data))
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145 surface = Surface()
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146 surface.surface = IMG_LoadPNG_RW(rwops)
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147 SDL_RWclose(rwops)
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148 if surface.surface == NULL:
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149 raise SDLError(SDL_GetError())
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150 return surface
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151
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152
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153 def create_rgb_surface(int width, int height, int depth, Uint32 rmask=0, Uint32 gmask=0, Uint32 bmask=0, Uint32 amask=0):
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154 surface = Surface()
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155 surface.surface = SDL_CreateRGBSurface(0, width, height, depth, rmask, gmask, bmask, amask)
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156 if surface.surface == NULL:
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157 raise SDLError(SDL_GetError())
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158 return surface
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159
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160
419
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161 def get_ticks():
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162 return SDL_GetTicks()
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163
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164
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165 def delay(Uint32 ms):
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166 SDL_Delay(ms)