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annotate pytouhou/formats/anm0.py @ 608:725bd24235a2

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Make ANM0 pure-python again, by moving the Cython-dependent ANM class into its own module.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Wed, 26 Nov 2014 14:00:17 +0100
parents pytouhou/formats/anm0.pyx@43ecf0f98f4d
children d18c0bf11138
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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
204
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15 """ANM0 files handling.
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16
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17 This module provides classes for handling the ANM0 file format.
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18 The ANM0 format is a format used in Touhou 6: EoSD to describe sprites
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19 and animations.
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20 Almost everything rendered in the game is described by an ANM0 file.
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21 """
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22
2
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23 from struct import pack, unpack
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24 from pytouhou.utils.helpers import read_string, get_logger
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25
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26 from pytouhou.formats import WrongFormatError
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27 from pytouhou.formats.animation import Animation
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28 from pytouhou.formats.thtx import Texture
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31 logger = get_logger(__name__)
2
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32
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33 #TODO: refactor/clean up
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35
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36 class Script(list):
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37 def __init__(self):
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38 list.__init__(self)
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39 self.interrupts = {}
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40
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42
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43 class ANM0(Animation):
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44 _instructions = {0: {0: ('', 'delete'),
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45 1: ('I', 'set_sprite'),
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46 2: ('ff', 'set_scale'),
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47 3: ('I', 'set_alpha'),
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48 4: ('BBBx', 'set_color'),
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49 5: ('I', 'jump'),
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50 7: ('', 'toggle_mirrored'),
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51 9: ('fff', 'set_3d_rotations'),
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52 10: ('fff', 'set_3d_rotations_speed'),
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53 11: ('ff', 'set_scale_speed'),
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54 12: ('ii', 'fade'),
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55 13: ('', 'set_blendmode_add'),
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56 14: ('', 'set_blendmode_alphablend'),
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57 15: ('', 'keep_still'),
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58 16: ('ii', 'set_random_sprite'),
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59 17: ('fff', 'set_3d_translation'),
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60 18: ('fffi', 'move_to_linear'),
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61 19: ('fffi', 'move_to_decel'),
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62 20: ('fffi', 'move_to_accel'),
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63 21: ('', 'wait'),
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64 22: ('i', 'interrupt_label'),
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65 23: ('', 'set_corner_relative_placement'),
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66 24: ('', 'wait_ex'),
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67 25: ('i', 'set_allow_offset'), #TODO: better name
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68 26: ('i', 'set_automatic_orientation'),
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69 27: ('f', 'shift_texture_x'),
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70 28: ('f', 'shift_texture_y'),
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71 29: ('i', 'set_visible'),
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72 30: ('ffi', 'scale_in'),
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73 31: ('i', None)},
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74
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75 2: {0: ('', 'noop'),
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76 1: ('', 'delete'),
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77 2: ('', 'keep_still'),
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78 3: ('I', 'set_sprite'),
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79 4: ('II', 'jump_bis'),
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80 5: ('III', 'jump_ex'),
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81 6: ('fff', 'set_3d_translation'),
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82 7: ('ff', 'set_scale'),
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83 8: ('I', 'set_alpha'),
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84 9: ('BBBx', 'set_color'),
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85 10: ('', 'toggle_mirrored'),
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86 12: ('fff', 'set_3d_rotations'),
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87 13: ('fff', 'set_3d_rotations_speed'),
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88 14: ('ff', 'set_scale_speed'),
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89 15: ('ii', 'fade'),
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90 16: ('I', 'set_blendmode'),
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91 17: ('fffi', 'move_to_linear'),
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92 18: ('fffi', 'move_to_decel'),
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93 19: ('fffi', 'move_to_accel'),
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94 20: ('', 'wait'),
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95 21: ('i', 'interrupt_label'),
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96 22: ('', 'set_corner_relative_placement'),
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97 23: ('', 'wait_ex'),
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98 24: ('i', 'set_allow_offset'), #TODO: better name
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99 25: ('i', 'set_automatic_orientation'),
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100 26: ('f', 'shift_texture_x'),
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101 27: ('f', 'shift_texture_y'),
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102 28: ('i', 'set_visible'),
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103 29: ('ffi', 'scale_in'),
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104 30: ('i', None),
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105 31: ('I', None),
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106 32: ('IIfff', 'move_in_linear_bis'),
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107 33: ('IIBBBx', 'change_color_in'),
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108 34: ('III', 'fade_bis'),
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109 35: ('IIfff', 'rotate_in_bis'),
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110 36: ('IIff', 'scale_in_bis'),
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111 37: ('II', 'set_int'),
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112 38: ('ff', 'set_float'),
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113 42: ('ff', 'decrement_float'),
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114 50: ('fff', 'add_float'),
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115 52: ('fff', 'substract_float'),
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116 55: ('III', 'divide_int'),
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117 59: ('II', 'set_random_int'),
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118 60: ('ff', 'set_random_float'),
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119 69: ('IIII', 'branch_if_not_equal'),
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120 79: ('I', 'wait_duration'),
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121 80: ('I', None)}}
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123
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124 @classmethod
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125 def read(cls, file):
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126 anm_list = []
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127 start_offset = 0
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diff changeset
128 while True:
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diff changeset
129 file.seek(start_offset)
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diff changeset
130 nb_sprites, nb_scripts, zero1 = unpack('<III', file.read(12))
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
131 width, height, fmt, unknown1 = unpack('<IIII', file.read(16))
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diff changeset
132 first_name_offset, unused, secondary_name_offset = unpack('<III', file.read(12))
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parents: 402
diff changeset
133 version, unknown2, texture_offset, has_data, next_offset, unknown3 = unpack('<IIIIII', file.read(24))
2
057cb96907e3 Add preliminay support for EoSD's ANM format
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134
429
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135 if version == 0:
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diff changeset
136 assert zero1 == 0
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diff changeset
137 assert unknown3 == 0
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diff changeset
138 assert has_data == 0
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139 elif version == 2:
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140 assert zero1 == 0
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141 assert secondary_name_offset == 0
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142 assert has_data == 1 # Can be false but we don’t support that yet.
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143 else:
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144 raise WrongFormatError(version)
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145
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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diff changeset
146 instructions = cls._instructions[version]
2
057cb96907e3 Add preliminay support for EoSD's ANM format
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147
429
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148 sprite_offsets = [unpack('<I', file.read(4))[0] for i in range(nb_sprites)]
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diff changeset
149 script_offsets = [unpack('<II', file.read(8)) for i in range(nb_scripts)]
2
057cb96907e3 Add preliminay support for EoSD's ANM format
Thibaut Girka <thib@sitedethib.com>
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150
608
725bd24235a2 Make ANM0 pure-python again, by moving the Cython-dependent ANM class into its own module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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diff changeset
151 self = cls()
429
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diff changeset
152
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153 self.size = (width, height)
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diff changeset
154 self.version = version
2
057cb96907e3 Add preliminay support for EoSD's ANM format
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155
429
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156 # Names
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157 if first_name_offset:
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diff changeset
158 file.seek(start_offset + first_name_offset)
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diff changeset
159 self.first_name = read_string(file, 32, 'ascii') #TODO: 32, really?
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160 if secondary_name_offset:
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diff changeset
161 file.seek(start_offset + secondary_name_offset)
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parents: 402
diff changeset
162 self.secondary_name = read_string(file, 32, 'ascii') #TODO: 32, really?
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parents: 402
diff changeset
163
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diff changeset
164
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diff changeset
165 # Sprites
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166 for offset in sprite_offsets:
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diff changeset
167 file.seek(start_offset + offset)
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diff changeset
168 idx, x, y, width, height = unpack('<Iffff', file.read(20))
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diff changeset
169 self.sprites[idx] = x, y, width, height
2
057cb96907e3 Add preliminay support for EoSD's ANM format
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170
057cb96907e3 Add preliminay support for EoSD's ANM format
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171
429
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172 # Scripts
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173 for i, offset in script_offsets:
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174 self.scripts[i] = Script()
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diff changeset
175 instruction_offsets = []
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176 file.seek(start_offset + offset)
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diff changeset
177 while True:
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178 instruction_offsets.append(file.tell() - (start_offset + offset))
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diff changeset
179 if version == 0:
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diff changeset
180 time, opcode, size = unpack('<HBB', file.read(4))
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diff changeset
181 elif version == 2:
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diff changeset
182 opcode, size, time, mask = unpack('<HHHH', file.read(8))
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diff changeset
183 if opcode == 0xffff:
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184 break
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185 size -= 8
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186 data = file.read(size)
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diff changeset
187 if opcode in instructions:
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diff changeset
188 args = unpack('<%s' % instructions[opcode][0], data)
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diff changeset
189 else:
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190 args = (data,)
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diff changeset
191 logger.warn('unknown opcode %d', opcode)
2
057cb96907e3 Add preliminay support for EoSD's ANM format
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parents:
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192
429
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diff changeset
193 self.scripts[i].append((time, opcode, args))
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diff changeset
194 if version == 0 and opcode == 0:
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diff changeset
195 break
2
057cb96907e3 Add preliminay support for EoSD's ANM format
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196
429
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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197 # Translate offsets to instruction pointers and register interrupts
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diff changeset
198 for instr_offset, (j, instr) in zip(instruction_offsets, enumerate(self.scripts[i])):
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diff changeset
199 time, opcode, args = instr
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diff changeset
200 if version == 0:
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diff changeset
201 if opcode == 5:
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diff changeset
202 args = (instruction_offsets.index(args[0]),)
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
203 elif opcode == 22:
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diff changeset
204 interrupt = args[0]
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
205 self.scripts[i].interrupts[interrupt] = j + 1
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
206 elif version == 2:
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
207 if opcode == 4:
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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diff changeset
208 args = (instruction_offsets.index(args[0]), args[1])
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
209 elif opcode == 5:
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diff changeset
210 args = (args[0], instruction_offsets.index(args[1]), args[2])
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
211 elif opcode == 21:
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diff changeset
212 interrupt = args[0]
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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diff changeset
213 self.scripts[i].interrupts[interrupt] = j + 1
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
214 elif opcode == 69:
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diff changeset
215 args = (args[0], args[1], instruction_offsets.index(args[2]), args[3])
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
216 self.scripts[i][j] = time, opcode, args
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
217
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
218 # Texture
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parents: 402
diff changeset
219 if has_data:
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diff changeset
220 file.seek(start_offset + texture_offset)
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parents: 402
diff changeset
221 magic = file.read(4)
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parents: 402
diff changeset
222 assert magic == b'THTX'
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
223 zero, fmt, width, height, size = unpack('<HHHHI', file.read(12))
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
224 assert zero == 0
111
340fcda8e64a Fix a few, minor things
Thibaut Girka <thib@sitedethib.com>
parents: 81
diff changeset
225 data = file.read(size)
429
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
226 self.texture = Texture(width, height, fmt, data)
69
a142e57218a0 Refactor. Move VMs to pytouhou.vm.
Thibaut Girka <thib@sitedethib.com>
parents: 57
diff changeset
227
429
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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diff changeset
228 anm_list.append(self)
69
a142e57218a0 Refactor. Move VMs to pytouhou.vm.
Thibaut Girka <thib@sitedethib.com>
parents: 57
diff changeset
229
429
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
230 if next_offset:
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diff changeset
231 start_offset += next_offset
40d5f3083ebc Implement PCB’s ANM2 format and vm.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 402
diff changeset
232 else:
40d5f3083ebc Implement PCB’s ANM2 format and vm.
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parents: 402
diff changeset
233 break
2
057cb96907e3 Add preliminay support for EoSD's ANM format
Thibaut Girka <thib@sitedethib.com>
parents:
diff changeset
234
429
40d5f3083ebc Implement PCB’s ANM2 format and vm.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 402
diff changeset
235 return anm_list