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annotate pytouhou/ui/gamerenderer.pyx @ 208:d07506a2e16e

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Implement autocollection of items.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Tue, 08 Nov 2011 22:10:44 -0800
parents ee6dfd14a785
children 577f45454402
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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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15 from libc.stdlib cimport malloc, free
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17 import ctypes
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19 from struct import pack
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20 from itertools import chain
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22 from pyglet.gl import *
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24 from .texture import TextureManager
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25 from .sprite cimport get_sprite_rendering_data
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26 from .background import get_background_rendering_data
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29 MAX_ELEMENTS = 10000
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32 cdef struct Vertex:
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33 int x, y, z
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34 float u, v
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35 unsigned char r, g, b, a
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36
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37
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38 cdef class GameRenderer:
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39 cdef public texture_manager
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40 cdef public game
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41 cdef public background
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42
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43 cdef Vertex *vertex_buffer
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44
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45
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46 def __cinit__(self):
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47 # Allocate buffers
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48 self.vertex_buffer = <Vertex*> malloc(MAX_ELEMENTS * sizeof(Vertex))
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50
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51 def __dealloc__(self):
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52 free(self.vertex_buffer)
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55 def __init__(self, resource_loader, game=None, background=None):
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56 self.texture_manager = TextureManager(resource_loader)
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57
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58 self.game = game
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59 self.background = background
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62 cdef render_elements(self, elements):
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63 cdef unsigned short nb_vertices = 0
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64
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65 indices_by_texture = {}
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67 for element in elements:
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68 sprite = element._sprite
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69 if sprite:
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70 ox, oy = element.x, element.y
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71 key, (vertices, uvs, colors) = get_sprite_rendering_data(sprite)
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72 rec = indices_by_texture.setdefault(key, [])
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73
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74 # Pack data in buffer
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75 (x1, y1, z1), (x2, y2, z2), (x3, y3, z3), (x4, y4, z4) = vertices
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76 r1, g1, b1, a1, r2, g2, b2, a2, r3, g3, b3, a3, r4, g4, b4, a4 = colors
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77 u1, v1, u2, v2, u3, v3, u4, v4 = uvs
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78 self.vertex_buffer[nb_vertices] = Vertex(x1 + ox, y1 + oy, z1, u1, v1, r1, g1, b1, a1)
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79 self.vertex_buffer[nb_vertices+1] = Vertex(x2 + ox, y2 + oy, z2, u2, v2, r2, g2, b2, a2)
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80 self.vertex_buffer[nb_vertices+2] = Vertex(x3 + ox, y3 + oy, z3, u3, v3, r3, g3, b3, a3)
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81 self.vertex_buffer[nb_vertices+3] = Vertex(x4 + ox, y4 + oy, z4, u4, v4, r4, g4, b4, a4)
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82
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83 # Add indices
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84 index = nb_vertices
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85 rec.extend((index, index + 1, index + 2, index + 3))
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86
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87 nb_vertices += 4
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88
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89 for (texture_key, blendfunc), indices in indices_by_texture.items():
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90 glVertexPointer(3, GL_INT, 24, <long> &self.vertex_buffer[0].x)
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91 glTexCoordPointer(2, GL_FLOAT, 24, <long> &self.vertex_buffer[0].u)
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92 glColorPointer(4, GL_UNSIGNED_BYTE, 24, <long> &self.vertex_buffer[0].r)
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93
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94 nb_indices = len(indices)
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95 indices = pack(str(nb_indices) + 'H', *indices)
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96 glBlendFunc(GL_SRC_ALPHA, (GL_ONE_MINUS_SRC_ALPHA, GL_ONE)[blendfunc])
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97 glBindTexture(GL_TEXTURE_2D, self.texture_manager[texture_key].id)
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98 glDrawElements(GL_QUADS, nb_indices, GL_UNSIGNED_SHORT, indices)
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99
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101 def render(self):
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102 glClear(GL_DEPTH_BUFFER_BIT)
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103
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104 back = self.background
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105 game = self.game
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106 texture_manager = self.texture_manager
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107
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108 if back is not None:
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109 fog_b, fog_g, fog_r, fog_start, fog_end = back.fog_interpolator.values
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110 x, y, z = back.position_interpolator.values
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111 dx, dy, dz = back.position2_interpolator.values
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112
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113 glFogi(GL_FOG_MODE, GL_LINEAR)
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114 glFogf(GL_FOG_START, fog_start)
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115 glFogf(GL_FOG_END, fog_end)
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116 glFogfv(GL_FOG_COLOR, (GLfloat * 4)(fog_r / 255., fog_g / 255., fog_b / 255., 1.))
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117
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118 glMatrixMode(GL_MODELVIEW)
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119 glLoadIdentity()
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120 # Some explanations on the magic constants:
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121 # 192. = 384. / 2. = width / 2.
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122 # 224. = 448. / 2. = height / 2.
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123 # 835.979370 = 224./math.tan(math.radians(15)) = (height/2.)/math.tan(math.radians(fov/2))
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124 # This is so that objects on the (O, x, y) plane use pixel coordinates
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125 gluLookAt(192., 224., - 835.979370 * dz,
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126 192. + dx, 224. - dy, 0., 0., -1., 0.)
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127 glTranslatef(-x, -y, -z)
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128
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129 glEnable(GL_DEPTH_TEST)
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130 for (texture_key, blendfunc), (nb_vertices, vertices, uvs, colors) in get_background_rendering_data(back):
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131 glBlendFunc(GL_SRC_ALPHA, (GL_ONE_MINUS_SRC_ALPHA, GL_ONE)[blendfunc])
119
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132 glBindTexture(GL_TEXTURE_2D, texture_manager[texture_key].id)
108
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133 glVertexPointer(3, GL_FLOAT, 0, vertices)
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134 glTexCoordPointer(2, GL_FLOAT, 0, uvs)
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135 glColorPointer(4, GL_UNSIGNED_BYTE, 0, colors)
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136 glDrawArrays(GL_QUADS, 0, nb_vertices)
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137 glDisable(GL_DEPTH_TEST)
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138 else:
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139 glClear(GL_COLOR_BUFFER_BIT)
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140
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141 if game is not None:
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142 glMatrixMode(GL_MODELVIEW)
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143 glLoadIdentity()
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144 # Some explanations on the magic constants:
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145 # 192. = 384. / 2. = width / 2.
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146 # 224. = 448. / 2. = height / 2.
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147 # 835.979370 = 224./math.tan(math.radians(15)) = (height/2.)/math.tan(math.radians(fov/2))
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148 # This is so that objects on the (O, x, y) plane use pixel coordinates
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149 gluLookAt(192., 224., - 835.979370,
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150 192., 224., 0., 0., -1., 0.)
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151
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152 glDisable(GL_FOG)
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153 self.render_elements(game.enemies)
166
dcf32488a2c9 Better enemy death, with animation and (hopefully) correct flags handling.
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154 self.render_elements(game.effects)
201
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155 self.render_elements(chain(game.players_bullets,
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156 game.players,
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157 *(player.objects() for player in game.players)))
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158 self.render_elements(chain(game.bullets, game.cancelled_bullets, game.items))
150
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159 #TODO: display item indicators
108
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160 glEnable(GL_FOG)
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161