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annotate pytouhou/opengl/sprite.py @ 117:1ec8be40880f

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[Data] Fix a crash with 102h.exe (missing music), and fix bullet sizes
author Thibaut Girka <thib@sitedethib.com>
date Wed, 07 Sep 2011 12:10:28 +0200
parents 2a03940deea3
children 4300a832f033
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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
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16 from math import pi
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17
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18 from pytouhou.utils.matrix import Matrix
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19
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20
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21 def get_sprite_rendering_data(sprite):
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22 if not sprite._changed:
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23 return sprite._rendering_data
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24
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25 if sprite.fade_interpolator:
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26 sprite.fade_interpolator.update(sprite.frame)
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27 sprite.alpha = int(sprite.fade_interpolator.values[0])
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28
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29 if sprite.scale_interpolator:
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30 sprite.scale_interpolator.update(sprite.frame)
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31 sprite.rescale = sprite.scale_interpolator.values
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32
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33 if sprite.offset_interpolator:
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34 sprite.offset_interpolator.update(sprite.frame)
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35 sprite.dest_offset = sprite.offset_interpolator.values
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36
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37 vertmat = Matrix([[-.5, .5, .5, -.5],
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38 [-.5, -.5, .5, .5],
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39 [ .0, .0, .0, .0],
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40 [ 1., 1., 1., 1.]])
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41
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42 tx, ty, tw, th = sprite.texcoords
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43 sx, sy = sprite.rescale
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44 width = sprite.width_override or (tw * sx)
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45 height = sprite.height_override or (th * sy)
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46
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47 vertmat.scale2d(width, height)
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48 if sprite.mirrored:
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49 vertmat.flip()
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50
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51 rx, ry, rz = sprite.rotations_3d
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52 if sprite.automatic_orientation:
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53 rz += pi/2. - sprite.angle
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54 elif sprite.force_rotation:
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55 rz += sprite.angle
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56
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57 if (rx, ry, rz) != (0., 0., 0.):
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58 if rx:
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59 vertmat.rotate_x(-rx)
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60 if ry:
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61 vertmat.rotate_y(ry)
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62 if rz:
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63 vertmat.rotate_z(-rz) #TODO: minus, really?
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64 if sprite.corner_relative_placement: # Reposition
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65 vertmat.translate(width / 2., height / 2., 0.)
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66 if sprite.allow_dest_offset:
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67 vertmat.translate(*sprite.dest_offset)
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68
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69 x_1 = 1. / sprite.anm.size[0]
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70 y_1 = 1. / sprite.anm.size[1]
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71 tox, toy = sprite.texoffsets
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72 uvs = [(tx * x_1 + tox, 1. - (ty * y_1) + toy),
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73 ((tx + tw) * x_1 + tox, 1. - (ty * y_1) + toy),
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74 ((tx + tw) * x_1 + tox, 1. - ((ty + th) * y_1 + toy)),
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75 (tx * x_1 + tox, 1. - ((ty + th) * y_1 + toy))]
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76
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77 d = vertmat.data
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78 assert (d[3][0], d[3][1], d[3][2], d[3][3]) == (1., 1., 1., 1.)
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79
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80 key = (sprite.anm.first_name, sprite.anm.secondary_name), sprite.blendfunc
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81 values = zip(d[0], d[1], d[2]), uvs, [(sprite.color[0], sprite.color[1], sprite.color[2], sprite.alpha)] * 4
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82 sprite._rendering_data = key, values
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83 sprite._changed = False
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84
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85 return sprite._rendering_data
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86