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annotate pytouhou/formats/anm0.py @ 38:cb5b27011044

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Small refactoring and proper anm0's instruction 5 handling
author Thibaut Girka <thib@sitedethib.com>
date Sun, 14 Aug 2011 18:08:45 +0200
parents 9027692abd79
children 93c8dc2de923
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1 from struct import pack, unpack
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2 from pytouhou.utils.helpers import read_string
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3
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4 #TODO: refactor/clean up
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5
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6
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7 class Animations(object):
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8 def __init__(self):
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9 self.size = (0, 0)
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10 self.first_name = None
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11 self.secondary_name = None
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12 self.sprites = {}
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13 self.scripts = {}
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16 @classmethod
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17 def read(cls, file):
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18 nb_sprites, nb_scripts, zero1 = unpack('<III', file.read(12))
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19 width, height, format, zero2 = unpack('<IIII', file.read(16))
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20 first_name_offset, unused, secondary_name_offset = unpack('<III', file.read(12))
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21 version, unknown1, thtxoffset, hasdata, nextoffset = unpack('<IIIII', file.read(20))
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22 if version != 0:
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23 raise Exception #TODO
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24 file.read(4) #TODO
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25
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26 sprite_offsets = [unpack('<I', file.read(4))[0] for i in range(nb_sprites)]
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27 script_offsets = [unpack('<II', file.read(8)) for i in range(nb_scripts)]
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29 anm = Animations()
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30
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31 anm.size = (width, height)
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32
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33 # Names
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34 if first_name_offset:
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35 file.seek(first_name_offset)
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36 anm.first_name = read_string(file, 32, 'ascii') #TODO: 32, really?
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37 if secondary_name_offset:
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38 file.seek(secondary_name_offset)
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39 anm.secondary_name = read_string(file, 32, 'ascii') #TODO: 32, really?
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41
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42 # Sprites
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43 file.seek(64)
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44 anm.sprites = {}
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45 for offset in sprite_offsets:
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46 file.seek(offset)
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47 idx, x, y, width, height = unpack('<Iffff', file.read(20))
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48 anm.sprites[idx] = x, y, width, height
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50
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51 # Scripts
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52 anm.scripts = {}
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53 for i, offset in script_offsets:
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54 anm.scripts[i] = []
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55 instruction_offsets = []
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56 file.seek(offset)
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57 while True:
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58 #TODO
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59 instruction_offsets.append(file.tell() - offset)
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60 time, instr_type, length = unpack('<HBB', file.read(4))
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61 data = file.read(length)
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62 if instr_type == 1: # set_sprite
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63 args = unpack('<I', data)
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64 elif instr_type == 2: # set_scale
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65 args = unpack('<ff', data)
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66 elif instr_type == 3: # set_alpha
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67 args = unpack('<I', data)
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68 elif instr_type == 5: # jump
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69 # Translate offset to instruction index
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70 args = (instruction_offsets.index(unpack('<I', data)[0]),)
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71 elif instr_type == 9: # set_3d_rotation
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72 args = unpack('<fff', data)
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73 elif instr_type == 10: # set_3d_rotation_speed
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74 args = unpack('<fff', data)
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75 else:
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76 args = (data,)
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77 anm.scripts[i].append((time, instr_type, args))
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78 if instr_type == 0:
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79 break
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80 #TODO
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81
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82 return anm
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83