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annotate pytouhou/formats/ecl.py @ 53:e72166f73e30

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author Thibaut Girka <thib@sitedethib.com>
date Mon, 22 Aug 2011 23:20:17 +0200
parents ab826bc29aa2
children 3da4de9decd0
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ab826bc29aa2 Add some documentation, GPLv3 headers, README and COPYING file.
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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
18
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16 from struct import pack, unpack
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17 from pytouhou.utils.helpers import read_string
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18
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19 from collections import namedtuple
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20
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21
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22 class ECL(object):
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23 _instructions = {0: ('', 'noop?'),
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24 1: ('I', 'delete?'),
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25 2: ('Ii', 'relative_jump'),
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26 3: ('Iii', 'relative_jump_ex'),
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27 4: ('ii', 'set_int'),
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28 5: ('if', 'set_float'),
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29 6: ('ii', 'set_random_int'),
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30 8: ('if', 'set_random_float'),
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31 9: ('iff', None),
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32 10: ('i', None),
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33 13: ('iii', None),
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34 14: ('iii', None),
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35 15: ('iii', None),
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36 16: ('iii', None),
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37 17: ('iii', None),
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38 18: ('i', None),
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39 20: ('iff', 'add'),
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40 21: ('iff', 'sub'),
42
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41 23: ('iff', None),
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42 25: ('iffff', None),
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43 26: ('i', None),
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44 27: ('ii', 'compare_ints'),
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45 28: ('ff', None),
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46 29: ('ii', None),
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47 30: ('ii', None),
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48 31: ('ii', 'relative_jump_if_equal'),
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49 32: ('ii', None),
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50 33: ('ii', None),
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51 34: ('ii', None),
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52 35: ('iif', 'call'),
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53 36: ('', 'return?'),
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54 39: ('iifii', 'call_if_equal'),
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55 43: ('fff', 'set_position'),
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56 45: ('ff', 'set_angle_and_speed'),
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57 46: ('f', 'set_rotation_speed'),
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58 47: ('f', 'set_speed'),
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59 48: ('f', 'set_acceleration'),
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60 49: ('ff', None),
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61 50: ('ff', None),
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62 51: ('ff', 'set_speed_towards_player'),
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63 52: ('iff', None),
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64 56: ('iffi', None),
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65 57: ('ifff', 'move_to'),
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66 59: ('iffi', 'move_to2'),
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67 61: ('i', 'stop_in'),
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68 63: ('i', None),
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69 65: ('ffff', 'set_screen_box'),
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70 66: ('', 'clear_screen_box'),
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71 67: ('hhiiffffi', 'set_bullet_attributes'),
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72 68: ('hhiiffffi', 'set_bullet_attributes2'),
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73 69: ('hhiiffffi', 'set_bullet_attributes3'),
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74 70: ('hhiiffffi', 'set_bullet_attributes4'),
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75 71: ('hhiiffffi', 'set_bullet_attributes5'),
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76 74: ('hhiiffffi', 'set_bullet_attributes6'),
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77 75: ('hhiiffffi', 'set_bullet_attributes7'),
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78 76: ('i', None),
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79 77: ('i', 'set_bullet_interval'),
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80 78: ('', 'delay_attack'),
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81 79: ('', 'no_delay_attack'),
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82 81: ('fff', 'set_bullet_launch_offset'),
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83 82: ('iiiiffff', None),
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84 83: ('', None),
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85 84: ('i', None),
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86 85: ('hhffffffiiiiii', 'laser'),
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87 86: ('hhffffffiiiiii', 'laser2'),
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88 87: ('i', 'set_upcoming_id'),
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89 88: ('if','alter_laser_angle'),
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90 90: ('iiii', None),
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91 92: ('i', None),
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92 #93: set_spellcard, a string is there
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93 94: ('', None),
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94 95: ('ifffhhi', None),
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95 96: ('', None),
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96 97: ('i', 'set_anim'),
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97 98: ('hhhhhxx', 'set_multiple_anims'),
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98 99: ('ii', None),
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99 100: ('i', 'set_death_anim'),
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100 101: ('i', 'set_boss_mode?'),
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101 102: ('iffff', None),
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102 103: ('fff', 'set_enemy_hitbox'),
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103 104: ('i', None),
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104 105: ('i', 'set_vulnerable'),
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105 106: ('i', 'play_sound'),
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106 107: ('i', None),
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107 108: ('i', 'set_death_callback?'),
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108 109: ('ii', 'memory_write_int'),
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109 111: ('i', 'set_life'),
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110 112: ('i', None),
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111 113: ('i', 'set_low_life_trigger'),
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112 114: ('i', 'set_low_life_callback'),
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113 115: ('i', 'set_timeout'),
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114 116: ('i', None),
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115 117: ('i', None),
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116 118: ('iihh', None),
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117 119: ('i', 'drop_bonus'),
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118 120: ('i', None),
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119 121: ('ii', None),
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120 122: ('i', None),
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121 123: ('i', None),
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122 124: ('i', None),
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123 125: ('', None),
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124 126: ('i', 'set_remaining_lives'),
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125 127: ('i', None),
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126 128: ('i', None),
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127 129: ('ii', None),
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128 130: ('i', None),
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129 131: ('ffiiii', None),
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130 132: ('i', None),
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131 133: ('', None),
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132 134: ('', None),
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133 135: ('i', None)} #TODO
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134
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135 def __init__(self):
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136 self.main = []
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137 self.subs = [[]]
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138
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139
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140 @classmethod
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141 def read(cls, file):
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142 sub_count, main_offset = unpack('<II', file.read(8))
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143 if file.read(8) != b'\x00\x00\x00\x00\x00\x00\x00\x00':
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144 raise Exception #TODO
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145 sub_offsets = unpack('<%s' % ('I' * sub_count), file.read(4 * sub_count))
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146
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147 ecl = cls()
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148 ecl.subs = []
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149 ecl.main = []
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150
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151 # Read subs
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152 for sub_offset in sub_offsets:
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153 file.seek(sub_offset)
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154 ecl.subs.append([])
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155
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156 instruction_offsets = []
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157
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158 while True:
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159 instruction_offsets.append(file.tell() - sub_offset)
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160
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161 time, opcode = unpack('<IH', file.read(6))
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162 if time == 0xffffffff or opcode == 0xffff:
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163 break
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164 size, rank_mask, param_mask = unpack('<HHH', file.read(6))
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165 data = file.read(size - 12)
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166 if opcode in cls._instructions:
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167 args = unpack('<%s' % cls._instructions[opcode][0], data)
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168 else:
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169 args = (data, )
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170 print('Warning: unknown opcode %d' % opcode) #TODO
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171
42
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172 ecl.subs[-1].append((time, opcode, rank_mask, param_mask, args))
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173
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174
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175 # Translate offsets to instruction pointers
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176 for instr_offset, (i, instr) in zip(instruction_offsets, enumerate(ecl.subs[-1])):
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177 time, opcode, rank_mask, param_mask, args = instr
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178 if opcode in (2, 31): # relative_jump
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179 frame, relative_offset = args
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180 args = frame, instruction_offsets.index(instr_offset + relative_offset)
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181 elif opcode == 3: # relative_jump_ex
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182 frame, relative_offset, counter_id = args
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183 args = frame, instruction_offsets.index(instr_offset + relative_offset), counter_id
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184 ecl.subs[-1][i] = time, opcode, rank_mask, param_mask, args
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185
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186
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187 # Read main
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188 file.seek(main_offset)
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189 while True:
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190 time, = unpack('<H', file.read(2))
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191 if time == 0xffff:
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192 break
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193 sub, instr_type, size = unpack('<HHH', file.read(6))
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194 data = file.read(size - 8)
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195 if instr_type in (0, 2, 4, 6): # Enemy spawn
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196 args = unpack('<ffIhHHH', data)
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197 else:
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198 print('ECL: Warning: unknown opcode %d (%r)' % (instr_type, data)) #TODO
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199 args = (data,)
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200 ecl.main.append((time, sub, instr_type, args))
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201
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202 return ecl
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203