annotate pytouhou/formats/anm0.py @ 136:d3005ebe797a

Fix MSG parsing, use the offsets instead of trying to relate them to the actual data.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Fri, 23 Sep 2011 10:05:20 -0700
parents 340fcda8e64a
children e7902309305c
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
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15 from struct import pack, unpack
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16 from pytouhou.utils.helpers import read_string, get_logger
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17
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18
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19 logger = get_logger(__name__)
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20
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21 #TODO: refactor/clean up
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22
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23
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24 class Animations(object):
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25 _instructions = {0: ('', 'delete'),
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26 1: ('I', 'set_sprite'),
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27 2: ('ff', 'set_scale'),
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28 3: ('I', 'set_alpha'),
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29 4: ('BBBx', 'set_color'),
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30 5: ('I', 'jump'),
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31 7: ('', 'toggle_mirrored'),
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32 9: ('fff', 'set_3d_rotations'),
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33 10: ('fff', 'set_3d_rotations_speed'),
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34 11: ('ff', 'set_scale_speed'),
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35 12: ('ii', 'fade'),
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36 13: ('', 'set_blendmode_add'),
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37 14: ('', 'set_blendmode_alphablend'),
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38 15: ('', 'keep_still'),
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39 16: ('ii', 'set_random_sprite'),
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40 17: ('fff', None),
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41 18: ('ffii', None),
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42 19: ('ffii', None),
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43 20: ('fffi', None),
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44 21: ('', None),
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45 22: ('i', None),
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46 23: ('', 'set_corner_relative_placement'),
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47 24: ('', None),
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48 25: ('i', 'set_allow_offset'), #TODO: better name
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49 26: ('i', 'set_automatic_orientation'),
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50 27: ('f', 'shift_texture_x'),
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51 28: ('f', 'shift_texture_y'),
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52 30: ('ffi', 'scale_in'),
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53 31: ('i', None)}
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55
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56 def __init__(self):
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57 self.size = (0, 0)
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58 self.first_name = None
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59 self.secondary_name = None
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60 self.sprites = {}
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61 self.scripts = {}
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62
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63
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64 @classmethod
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65 def read(cls, file):
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66 nb_sprites, nb_scripts, zero1 = unpack('<III', file.read(12))
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67 width, height, format, zero2 = unpack('<IIII', file.read(16))
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68 first_name_offset, unused, secondary_name_offset = unpack('<III', file.read(12))
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69 version, unknown1, thtxoffset, hasdata, nextoffset = unpack('<IIIII', file.read(20))
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70 if version != 0:
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71 raise Exception #TODO
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72 file.read(4) #TODO
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73
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74 sprite_offsets = [unpack('<I', file.read(4))[0] for i in range(nb_sprites)]
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75 script_offsets = [unpack('<II', file.read(8)) for i in range(nb_scripts)]
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76
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77 anm = Animations()
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78
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79 anm.size = (width, height)
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80
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81 # Names
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82 if first_name_offset:
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83 file.seek(first_name_offset)
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84 anm.first_name = read_string(file, 32, 'ascii') #TODO: 32, really?
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85 if secondary_name_offset:
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86 file.seek(secondary_name_offset)
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87 anm.secondary_name = read_string(file, 32, 'ascii') #TODO: 32, really?
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88
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89
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90 # Sprites
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91 file.seek(64)
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92 anm.sprites = {}
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93 for offset in sprite_offsets:
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94 file.seek(offset)
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95 idx, x, y, width, height = unpack('<Iffff', file.read(20))
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96 anm.sprites[idx] = x, y, width, height
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97
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98
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99 # Scripts
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100 anm.scripts = {}
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101 for i, offset in script_offsets:
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102 anm.scripts[i] = []
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103 instruction_offsets = []
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104 file.seek(offset)
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105 while True:
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106 #TODO
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107 instruction_offsets.append(file.tell() - offset)
111
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108 time, opcode, size = unpack('<HBB', file.read(4))
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109 data = file.read(size)
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110 if opcode in cls._instructions:
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111 args = unpack('<%s' % cls._instructions[opcode][0], data)
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112 else:
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113 args = (data,)
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114 logger.warn('unknown opcode %d', opcode)
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115
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116 anm.scripts[i].append((time, opcode, args))
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117 if opcode == 0:
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118 break
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119
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120 # Translate offsets to instruction pointers
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121 for instr_offset, (j, instr) in zip(instruction_offsets, enumerate(anm.scripts[i])):
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122 time, opcode, args = instr
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123 if opcode == 5:
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124 args = (instruction_offsets.index(args[0]),)
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125 anm.scripts[i][j] = time, opcode, args
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126 #TODO
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127
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128 return anm
2
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129