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annotate pytouhou/formats/ecl.py @ 79:ffe2c2b9912c

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Handle a few more ECL instructions. Prepare for bullet handling \o/
author Thibaut Girka <thib@sitedethib.com>
date Sat, 03 Sep 2011 18:17:39 +0200
parents bcf965ede96c
children fda176f07d6d
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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 pytouhou.utils.helpers import get_logger
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20
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21 logger = get_logger(__name__)
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22
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23 class ECL(object):
42
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24 _instructions = {0: ('', 'noop?'),
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25 1: ('I', 'delete?'),
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26 2: ('Ii', 'relative_jump'),
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27 3: ('Iii', 'relative_jump_ex'),
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28 4: ('ii', 'set_int'),
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29 5: ('if', 'set_float'),
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30 6: ('ii', 'set_random_int'),
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31 8: ('if', 'set_random_float'),
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32 9: ('iff', 'set_random_float2'),
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33 10: ('i', 'store_x'),
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34 13: ('iii', 'set_random_int2'),
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35 14: ('iii', 'substract_int'),
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36 15: ('iii', 'multiply_int'),
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37 16: ('iii', 'divide_int'),
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38 17: ('iii', 'modulo'),
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39 18: ('i', None),
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40 20: ('iff', 'add_float'),
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41 21: ('iff', 'substract_float'),
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42 23: ('iff', 'divide_float'),
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43 25: ('iffff', 'get_direction'),
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44 26: ('i', None),
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45 27: ('ii', 'compare_ints'),
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46 28: ('ff', 'compare_floats'),
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47 29: ('ii', 'relative_jump_if_lower_than'),
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48 30: ('ii', 'relative_jump_if_lower_or_equal'),
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49 31: ('ii', 'relative_jump_if_equal'),
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50 32: ('ii', 'relative_jump_if_greater_than'),
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51 33: ('ii', 'relative_jump_if_greater_or_equal'),
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52 34: ('ii', 'relative_jump_if_not_equal'),
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53 35: ('iif', 'call'),
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54 36: ('', 'return?'),
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55 39: ('iifii', 'call_if_equal'),
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56 43: ('fff', 'set_position'),
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57 45: ('ff', 'set_angle_and_speed'),
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58 46: ('f', 'set_rotation_speed'),
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59 47: ('f', 'set_speed'),
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60 48: ('f', 'set_acceleration'),
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61 49: ('ff', 'set_random_angle'),
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62 50: ('ff', 'set_random_angle_ex'),
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63 51: ('ff', 'set_speed_towards_player'),
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64 52: ('iff', 'move_in_decel'),
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65 56: ('ifff', 'move_to_linear'),
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66 57: ('ifff', 'move_to_decel'),
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67 59: ('iffi', 'move_to_accel'),
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68 61: ('i', 'stop_in'),
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69 63: ('i', 'stop_in_accel'),
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70 65: ('ffff', 'set_screen_box'),
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71 66: ('', 'clear_screen_box'),
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72 67: ('hhiiffffi', 'set_bullet_attributes'),
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73 68: ('hhiiffffi', 'set_bullet_attributes2'),
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74 69: ('hhiiffffi', 'set_bullet_attributes3'),
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75 70: ('hhiiffffi', 'set_bullet_attributes4'),
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76 71: ('hhiiffffi', 'set_bullet_attributes5'),
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77 74: ('hhiiffffi', 'set_bullet_attributes6'),
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78 75: ('hhiiffffi', 'set_bullet_attributes7'),
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79 76: ('i', 'set_bullet_interval'),
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80 77: ('i', 'set_bullet_interval_ex'),
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81 78: ('', 'delay_attack'),
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82 79: ('', 'no_delay_attack'),
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83 81: ('fff', 'set_bullet_launch_offset'),
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84 82: ('iiiiffff', 'set_extended_bullet_attributes'),
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85 83: ('', None),
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86 84: ('i', None),
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87 85: ('hhffffffiiiiii', 'laser'),
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88 86: ('hhffffffiiiiii', 'laser2'),
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89 87: ('i', 'set_upcoming_id'),
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90 88: ('if','alter_laser_angle'),
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91 90: ('iiii', None),
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92 92: ('i', None),
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93 #93: set_spellcard, a string is there
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94 94: ('', 'end_spellcard'),
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95 95: ('ifffhhi', None),
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96 96: ('', None),
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97 97: ('i', 'set_anim'),
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98 98: ('hhhhhxx', 'set_multiple_anims'),
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99 99: ('ii', None),
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100 100: ('i', 'set_death_anim'),
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101 101: ('i', 'set_boss_mode?'),
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102 102: ('iffff', 'create_squares'),
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103 103: ('fff', 'set_enemy_hitbox'),
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104 104: ('i', 'set_collidable'),
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105 105: ('i', 'set_damageable'),
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106 106: ('i', 'play_sound'),
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107 107: ('i', 'set_death_flags'),
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108 108: ('i', 'set_death_callback?'),
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109 109: ('ii', 'memory_write_int'),
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110 111: ('i', 'set_life'),
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111 112: ('i', 'set_ellapsed_time'),
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112 113: ('i', 'set_low_life_trigger'),
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113 114: ('i', 'set_low_life_callback'),
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114 115: ('i', 'set_timeout'),
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115 116: ('i', 'set_timeout_callback'),
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116 117: ('i', 'set_touchable'),
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117 118: ('iihh', None),
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118 119: ('i', 'drop_bonus'),
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119 120: ('i', 'set_automatic_orientation'),
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120 121: ('ii', None),
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121 122: ('i', None),
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122 123: ('i', 'skip_frames'),
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123 124: ('i', 'drop_specific_bonus'),
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124 125: ('', None),
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125 126: ('i', 'set_remaining_lives'),
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126 127: ('i', None),
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127 128: ('i', None),
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128 129: ('ii', None),
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129 130: ('i', None),
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130 131: ('ffiiii', None),
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131 132: ('i', None),
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132 133: ('', None),
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133 134: ('', None),
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134 135: ('i', None)} #TODO
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135
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136 def __init__(self):
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137 self.main = []
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138 self.subs = [[]]
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139
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140
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141 @classmethod
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142 def read(cls, file):
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143 sub_count, main_offset = unpack('<II', file.read(8))
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144 if file.read(8) != b'\x00\x00\x00\x00\x00\x00\x00\x00':
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145 raise Exception #TODO
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146 sub_offsets = unpack('<%s' % ('I' * sub_count), file.read(4 * sub_count))
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147
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148 ecl = cls()
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149 ecl.subs = []
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150 ecl.main = []
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151
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152 # Read subs
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153 for sub_offset in sub_offsets:
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154 file.seek(sub_offset)
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155 ecl.subs.append([])
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156
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157 instruction_offsets = []
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158
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159 while True:
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160 instruction_offsets.append(file.tell() - sub_offset)
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161
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162 time, opcode = unpack('<IH', file.read(6))
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163 if time == 0xffffffff or opcode == 0xffff:
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164 break
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165 size, rank_mask, param_mask = unpack('<HHH', file.read(6))
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166 data = file.read(size - 12)
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167 if opcode in cls._instructions:
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168 args = unpack('<%s' % cls._instructions[opcode][0], data)
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169 else:
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170 args = (data, )
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171 logger.warn('unknown opcode %d', opcode)
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172
42
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173 ecl.subs[-1].append((time, opcode, rank_mask, param_mask, args))
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174
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175
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176 # Translate offsets to instruction pointers
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177 for instr_offset, (i, instr) in zip(instruction_offsets, enumerate(ecl.subs[-1])):
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178 time, opcode, rank_mask, param_mask, args = instr
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179 if opcode in (2, 29, 30, 31, 32, 33, 34): # relative_jump
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180 frame, relative_offset = args
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181 args = frame, instruction_offsets.index(instr_offset + relative_offset)
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182 elif opcode == 3: # relative_jump_ex
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183 frame, relative_offset, counter_id = args
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184 args = frame, instruction_offsets.index(instr_offset + relative_offset), counter_id
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185 ecl.subs[-1][i] = time, opcode, rank_mask, param_mask, args
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186
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187
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188 # Read main
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189 file.seek(main_offset)
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190 while True:
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191 time, = unpack('<H', file.read(2))
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192 if time == 0xffff:
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193 break
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194 sub, instr_type, size = unpack('<HHH', file.read(6))
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195 data = file.read(size - 8)
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196 if instr_type in (0, 2, 4, 6): # Enemy spawn
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197 args = unpack('<ffIhHHH', data)
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198 else:
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199 logger.warn('unknown main opcode %d (data: %r)', instr_type, data)
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200 args = (data,)
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201 ecl.main.append((time, sub, instr_type, args))
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202
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203 return ecl
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204