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540 lines
21 KiB
Python
540 lines
21 KiB
Python
#! /usr/bin/python3
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import sys
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try:
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from .bones import *
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from .util import *
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from .geomesh import GeoMesh, GeoFace, GeoVertex
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from .compression_anim import *
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except:
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from bones import *
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from util import *
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from geomesh import GeoMesh, GeoFace, GeoVertex
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from compression_anim import *
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#.anim header
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#Offset Size Description
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#0 4 (int32) headerSize Size of this header plus BoneAnimTrack data and skeleton hierarchy data.
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#4 256 (asciiz) name
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#260 256 (asciiz) baseAnimName
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#516 4 (float32) max_hip_displacement
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#520 4 (float32) length
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#524 4 (ptr u32) bone_tracks Offset to array of BoneAnimTrack structures.
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#528 4 (int32) bone_track_count
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#532 4 (int32) rotation_compression_type ??
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#536 4 (int32) position_compression_type ??
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#540 4 (ptr u32) skeletonHeirarchy ?? SkeletonHeirarchy
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#Below are reserved for use by the game.
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#544 4 (ptr u32) backupAnimTrack *SkeletonAnimTrack
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#548 4 (int32) loadstate
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#552 4 (float32) lasttimeused
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#556 4 (int32) fileAge
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#560 4*9 (int32[9]) spare_room
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#596 -
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#BoneAnimTrack
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#0 4 (ptr u32) rot_idx ?? Offset to the rotation data. Format depends on compression method.
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#4 4 (ptr u32) pos_idx ?? Offset to the position data. Format depends on compression method.
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#8 2 (u16) rot_fullkeycount ??
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#10 2 (u16) pos_fullkeycount ??
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#12 2 (u16) rot_count ??
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#14 2 (u16) pos_count ??
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#16 1 (char) id Bone ID.
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#17 1 (char) flags ??
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#18 2 (u16) pack_pad Padding to push the structure to 4 byte alignment.
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#20 -
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#SkeletonHeirarchy
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#0 4 (int) heirarchy_root ?? First bone in the hierarchy.
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#4 12*100 (BoneLink[BONES_ON_DISK])
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#1204 -
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#BONES_ON_DISK = 100
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#BoneLink
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#0 4 (int) child ?? First child bone?
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#4 4 (int) next ?? The next sibling bone?
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#8 4 (int/BoneId) id The ID of this bone.
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#12 -
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ROTATION_UNCOMPRESSED = 1 << 0
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ROTATION_COMPRESSED_TO_5_BYTES = 1 << 1
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ROTATION_COMPRESSED_TO_8_BYTES = 1 << 2
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POSITION_UNCOMPRESS = 1 << 3
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POSITION_COMPRESSED_TO_6_BYTES = 1 << 4
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ROTATION_DELTACODED = 1 << 5
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POSITION_DELTACODED = 1 << 6
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ROTATION_COMPRESSED_NONLINEAR = 1 << 7
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ROTATION_MASK = ROTATION_UNCOMPRESSED | ROTATION_COMPRESSED_TO_5_BYTES | ROTATION_COMPRESSED_TO_8_BYTES | ROTATION_DELTACODED | ROTATION_COMPRESSED_NONLINEAR
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POSITION_MASK = POSITION_UNCOMPRESS | POSITION_COMPRESSED_TO_6_BYTES | POSITION_DELTACODED
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class BoneLink:
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def __init__(self, data_or_child = None, next = None, boneid = None):
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self.child = -1
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self.next = -1
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self.boneid = -1
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if data_or_child is None:
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return
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if next is None:
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(self.child, self.next, self.boneid) = data_or_child.decode("<iii")
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if self.child == 0 and self.next == 0 and self.boneid == 0:
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#All zero indicates an unused bone when written to disk.
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#Change it to all -1 make it clear it's unused.
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(self.child, self.next, self.boneid) = (-1, -1, -1)
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else:
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self.child = data_or_child
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self.next = next
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self.boneid = boneid
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def encode(self):
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if self.boneid == -1:
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return struct.pack("<iii", 0, 0, 0)
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return struct.pack("<iii", self.child, self.next, self.boneid)
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def dump(self):
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print("bone: %s (%s)" % (self.boneid, BONES_LIST[self.boneid]))
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print(" child: %s (%s)" % (self.child, BONES_LIST[self.child]))
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print(" next: %s (%s)" % (self.next, BONES_LIST[self.next]))
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class SkeletonHierarchy:
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def __init__(self):
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self.root = -1
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self.bones = []
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def clear(self):
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self.root = -1
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self.bones = []
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def parseData(self, data, size = None):
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self.root = data.decode("<i")[0]
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self.bones = []
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if size is None:
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size = len(data)
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count = int(math.floor((size - 4) / 12.0))
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for i in range(count): #BONES_ON_DISK):
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self.bones.append(BoneLink(data))
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def encode(self):
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bone_max = len(self.bones)
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data = struct.pack("<i", self.root)
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blank_bone = BoneLink().encode()
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for bl in self.bones:
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if bl is None:
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data += blank_bone
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else:
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data += bl.encode()
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for i in range(bone_max, BONES_ON_DISK):
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data += blank_bone
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return data
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def initBones(self, bone_id):
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if bone_id == -1 or bone_id is None:
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return
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#Ensure the array is sized up to bone_id, and it's non-None.
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if len(self.bones) <= bone_id:
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#print("initBones(%s): %s: %s" % (bone_id, len(self.bones), self.bones,))
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self.bones += [None] * (bone_id - len(self.bones) + 1)
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#print("initBones(%s): %s: %s" % (bone_id, len(self.bones), self.bones,))
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if self.bones[bone_id] is None or self.bones[bone_id].boneid == -1:
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self.bones[bone_id] = BoneLink(-1, -1, bone_id)
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def addBone(self, parent_id, bone_id):
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self.initBones(bone_id)
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self.initBones(parent_id)
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if parent_id == -1 or parent_id is None:
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#New bone is a root bone.
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if self.root == -1:
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#It's the first root bone.
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self.root = bone_id
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else:
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#Find the last root bone, and add it to the end of the next chain.
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last_root_id = self.root
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while self.bones[last_root_id].next != -1:
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last_root_id = self.bones[last_root_id].next
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self.bones[last_root_id].next = bone_id
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else:
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#New bone has a parent.
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if self.bones[parent_id].child != -1:
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#Parent already has children, add it to the end of the next chain.
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last_sibling_id = self.bones[parent_id].child
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while self.bones[last_sibling_id].next != -1:
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last_sibling_id = self.bones[last_sibling_id].next
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self.bones[last_sibling_id].next = bone_id
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else:
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#It's the first child bone.
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self.bones[parent_id].child = bone_id
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def dump(self):
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print("SkeletonHierarchy: root: %s (%s) bones: %s" % (self.root, BONES_LIST[self.root], len(self.bones)))
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for i, b in enumerate(self.bones):
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if b is None:
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print("No bone: %s (%s)" % (i, BONES_LIST[i]))
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else:
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b.dump()
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class BoneAnimTrack:
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def __init__(self, data = b"", srcdata = None):
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self.rawdata = data
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self.srcdata = srcdata
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self.rotations_data_offset = 0
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self.positions_data_offset = 0
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self.rotations = []
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self.positions = []
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self.rot_fullkeycount = 0
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self.pos_fullkeycount = 0
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self.rot_count = 0
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self.pos_count = 0
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self.bone_id = 0
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self.flags = 0
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self.padding = b""
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if len(data):
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self.parseData()
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def parseData(self):
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self.data = Data(self.rawdata)
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self.rotations_data_offset = self.data.decode("I")[0]
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self.positions_data_offset = self.data.decode("I")[0]
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self.rot_fullkeycount = self.data.decode("H")[0]
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self.pos_fullkeycount = self.data.decode("H")[0]
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self.rot_count = self.data.decode("H")[0]
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self.pos_count = self.data.decode("H")[0]
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self.bone_id = self.data.decode("B")[0]
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self.flags = self.data.decode("B")[0]
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self.padding = self.data.read(2)
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self.parseRotations()
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self.parsePositions()
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def parseRotations(self):
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self.rotations = []
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offset = self.srcdata.offset
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self.srcdata.seek(self.rotations_data_offset)
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method = self.flags & ROTATION_MASK
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if method == ROTATION_UNCOMPRESSED:
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for i in range(self.rot_count):
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self.rotations.append(self.srcdata.decode("<ffff"))
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pass
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elif method == ROTATION_COMPRESSED_TO_5_BYTES:
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for i in range(self.rot_count):
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self.rotations.append(decompressQuaternion_5Byte(self.srcdata.read(5)))
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pass
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elif method == ROTATION_COMPRESSED_TO_8_BYTES:
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for i in range(self.rot_count):
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self.rotations.append(decompressQuaternion_8Byte(self.srcdata.read(8)))
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pass
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elif method == ROTATION_DELTACODED:
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raise
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pass
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elif method == ROTATION_COMPRESSED_NONLINEAR:
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raise Exception("Unsupported rotation compression: ROTATION_COMPRESSED_NONLINEAR")
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pass
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else:
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#raise Exception("bone track rotation type 0x%2.2x unknown" % (self.flags, ))
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pass
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self.srcdata.seek(offset)
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def parsePositions(self):
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self.positions = []
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offset = self.srcdata.offset
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self.srcdata.seek(self.positions_data_offset)
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method = self.flags & POSITION_MASK
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if method == POSITION_UNCOMPRESS:
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for i in range(self.pos_count):
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self.positions.append(self.srcdata.decode("<fff"))
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pass
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elif method == POSITION_COMPRESSED_TO_6_BYTES:
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for i in range(self.pos_count):
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self.positions.append(decompressVector3_6Byte(self.srcdata.read(6)))
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pass
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elif method == POSITION_DELTACODED:
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raise
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pass
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else:
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#raise Exception("bone track position type 0x%2.2x unknown" % (self.flags, ))
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pass
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self.srcdata.seek(offset)
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def encode(self, out_offset, out_data):
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self.encodePositions()
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self.encodeRotations()
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self.data = Data()
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self.rotations_data_offset = len(out_data) + out_offset
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out_data.write(self.rotation_data)
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self.positions_data_offset = len(out_data) + out_offset
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out_data.write(self.position_data)
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self.rot_count = self.rot_fullkeycount = len(self.rotations)
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self.pos_count = self.pos_fullkeycount = len(self.positions)
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self.data.encode("<I", self.rotations_data_offset)
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self.data.encode("<I", self.positions_data_offset)
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self.data.encode("<H", self.rot_fullkeycount)
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self.data.encode("<H", self.pos_fullkeycount)
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self.data.encode("<H", self.rot_count)
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self.data.encode("<H", self.pos_count)
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self.data.encode("<BBBB", self.bone_id, self.flags, 0, 0)
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self.rawdata = self.data.data
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return self.rawdata
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def encodePositions(self):
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#Choose encoding.
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require_full = False
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for pos in self.positions:
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for v in pos:
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if abs(v) > 1.0:
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require_full = True
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self.flags = self.flags & ~POSITION_MASK
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#Set flags and endode data
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self.position_data = b""
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if require_full:
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self.flags = self.flags | POSITION_UNCOMPRESS
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for pos in self.positions:
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self.position_data += struct.pack("<fff", pos[0], pos[1], pos[2])
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else:
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self.flags = self.flags | POSITION_COMPRESSED_TO_6_BYTES
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for pos in self.positions:
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self.position_data += compressVector3_6Byte(pos)
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pass
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def encodeRotations(self):
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#Choose encoding.
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require_full = False
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#for pos in self.positions:
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# for v in pos:
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# if abs(v) > 1.0:
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# require_full = True
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self.flags = self.flags & ~ROTATION_MASK
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#Set flags and endode data
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self.rotation_data = b""
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if require_full:
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self.flags = self.flags | ROTATION_UNCOMPRESS
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for rot in self.rotattions:
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self.rotation_data += struct.pack("<ffff", rot[0], rot[1], rot[2], rot[3])
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else:
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self.flags = self.flags | ROTATION_COMPRESSED_TO_5_BYTES
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for rot in self.rotations:
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self.rotation_data += compressQuaternion_5Byte(rot)
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pass
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def dump(self):
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print("rotations_data_offset: %s" % (self.rotations_data_offset, ))
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print("positions_data_offset: %s" % (self.positions_data_offset, ))
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print("rot_fullkeycount: %s" % (self.rot_fullkeycount, ))
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print("pos_fullkeycount: %s" % (self.pos_fullkeycount, ))
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print("rot_count: %s" % (self.rot_count, ))
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print("pos_count: %s" % (self.pos_count, ))
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if self.bone_id > len(BONES_LIST):
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print("bone_id: %s (?)" % (self.bone_id, ))
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else:
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print("bone_id: %s %s" % (self.bone_id, BONES_LIST[self.bone_id]))
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print("flags: 0x%2.2x" % (self.flags, ))
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print("padding: %s" % (self.padding, ))
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print("rotations: %s" % (self.rotations, ))
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print("positions: %s" % (self.positions, ))
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class Anim:
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def __init__(self):
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self.data = b""
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self.offset = 0
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self.version = -1
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self.header_size = -1
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self.header_name = ""
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self.header_base_anim_name = ""
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self.header_max_hip_displacement = 0
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self.header_length = 0
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self.header_bone_tracks_offset = 0
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self.header_bone_track_count = 0
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self.header_rotation_compression_type = 0
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self.header_position_compression_type = 0
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self.header_skeleton_hierarchy_offset = 0
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self.header_backup_anim_track = 0
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self.header_load_state = 0
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self.header_last_time_used = 0
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self.header_file_age = 0
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self.header_spare_room = b""
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self.bone_tracks = []
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self.skeleton_hierarchy = None
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pass
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def loadFromData(self, data):
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self.data = Data(data)
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self.offset = 0
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self.parseData()
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pass
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def loadFromFile(self, filein):
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self.data = Data(filein.read())
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self.offset = 0
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self.parseData()
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pass
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def saveToData(self):
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self.encode()
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return self.data.data
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def saveToFile(self, fileout):
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self.encode()
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fileout.write(self.data.data)
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def parseData(self):
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self.data.seek(0)
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self.header_size = self.data.decode("i")[0]
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self.header_name = extractString(self.data.read(256))
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self.header_base_anim_name = extractString(self.data.read(256))
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self.header_max_hip_displacement = self.data.decode("f")[0]
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self.header_length = self.data.decode("f")[0]
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self.header_bone_tracks_offset = self.data.decode("I")[0]
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self.header_bone_track_count = self.data.decode("i")[0]
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self.header_rotation_compression_type = self.data.decode("i")[0]
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self.header_position_compression_type = self.data.decode("i")[0]
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self.header_skeleton_hierarchy_offset = self.data.decode("I")[0]
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self.header_backup_anim_track = self.data.decode("I")[0]
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self.header_load_state = self.data.decode("i")[0]
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self.header_last_time_used = self.data.decode("f")[0]
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self.header_file_age = self.data.decode("f")[0]
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self.header_spare_room = self.data.read(4 * 9)
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self.bone_tracks = []
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if self.header_bone_tracks_offset > 0:
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self.data.seek(self.header_bone_tracks_offset)
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for i in range(self.header_bone_track_count):
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self.bone_tracks.append(BoneAnimTrack(self.data.read(20), self.data))
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self.skeleton_hierarchy = None
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if self.header_skeleton_hierarchy_offset > 0:
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self.data.seek(self.header_skeleton_hierarchy_offset)
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self.skeleton_hierarchy = SkeletonHierarchy()
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if self.header_skeleton_hierarchy_offset > self.header_bone_tracks_offset:
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skel_size = self.header_size - self.header_skeleton_hierarchy_offset
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else:
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skel_size = self.header_bone_tracks_offset - self.header_skeleton_hierarchy_offset
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self.skeleton_hierarchy.parseData(self.data, skel_size)
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pass
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def encode(self):
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if isinstance(self.header_name, str):
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self.header_name = bytes(self.header_name, "utf-8")
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if isinstance(self.header_base_anim_name, str):
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self.header_base_anim_name = bytes(self.header_base_anim_name, "utf-8")
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header_base_size = 596
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header_bone_tracks_size = 20 * len(self.bone_tracks)
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if self.skeleton_hierarchy is None:
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skel_data = b""
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header_skeleton_hierarhy_size = 0
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else:
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skel_data = self.skeleton_hierarchy.encode()
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header_skeleton_hierarhy_size = len(skel_data)
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#todo: verify all defined bones are present in the track data
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header_total_size = header_base_size + header_bone_tracks_size + header_skeleton_hierarhy_size
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header_bone_track_data = b""
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bone_track_data = Data()
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for bt in self.bone_tracks:
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header_bone_track_data += bt.encode(header_total_size, bone_track_data)
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if len(header_bone_track_data) != header_bone_tracks_size:
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#Verify the header is the right length.
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raise Exception("Internal error: Header bone tracks size mismatch! Got: %s Expected: %s" % (len(header_bone_tracks), header_bone_tracks_size))
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self.header_size = header_total_size
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#self.header_max_hip_displacement = 0
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self.header_length = 0
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for bt in self.bone_tracks:
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self.header_length = max(self.header_length, len(bt.positions), len(bt.rotations))
|
|
self.header_length = max(0, self.header_length - 1)
|
|
self.header_bone_tracks_offset = header_base_size + header_skeleton_hierarhy_size
|
|
self.header_bone_track_count = len(self.bone_tracks)
|
|
self.header_rotation_compression_type = 0
|
|
self.header_position_compression_type = 0
|
|
if self.skeleton_hierarchy is None:
|
|
self.header_skeleton_hierarchy_offset = 0
|
|
else:
|
|
self.header_skeleton_hierarchy_offset = header_base_size
|
|
self
|
|
header_data = (
|
|
struct.pack("<i256s256sff",
|
|
header_total_size,
|
|
storeString(self.header_name, 256),
|
|
storeString(self.header_base_anim_name, 256),
|
|
self.header_max_hip_displacement,
|
|
self.header_length) +
|
|
struct.pack("<IiiiI",
|
|
self.header_bone_tracks_offset,
|
|
self.header_bone_track_count,
|
|
self.header_rotation_compression_type,
|
|
self.header_position_compression_type,
|
|
self.header_skeleton_hierarchy_offset) +
|
|
ZERO_BYTE * (4 * 13))
|
|
#Verify header lengths
|
|
if len(header_data) != header_base_size:
|
|
raise Exception("Internal error: Header base size mismatch! Got: %s Expected: %s" % (len(header_data), header_base_size))
|
|
#todo: total header length
|
|
|
|
rawdata = header_data + skel_data + header_bone_track_data + bone_track_data.data
|
|
self.data = Data(rawdata)
|
|
return rawdata
|
|
|
|
|
|
def dump(self):
|
|
print("header_size: %s" % (self.header_size, ))
|
|
print("header_name: %s" % (self.header_name, ))
|
|
print("header_base_anim_name: %s" % (self.header_base_anim_name, ))
|
|
print("header_max_hip_displacement: %s" % (self.header_max_hip_displacement, ))
|
|
print("header_length: %s" % (self.header_length, ))
|
|
print("header_bone_tracks_offset: %s" % (self.header_bone_tracks_offset, ))
|
|
print("header_bone_track_count: %s" % (self.header_bone_track_count, ))
|
|
print("header_rotation_compression_type: %s" % (self.header_rotation_compression_type, ))
|
|
print("header_position_compression_type: %s" % (self.header_position_compression_type, ))
|
|
print("header_skeleton_hierarchy_offset: %s" % (self.header_skeleton_hierarchy_offset, ))
|
|
print("header_backup_anim_track: %s" % (self.header_backup_anim_track, ))
|
|
print("header_load_state: %s" % (self.header_load_state, ))
|
|
print("header_last_time_used: %s" % (self.header_last_time_used, ))
|
|
print("header_file_age: %s" % (self.header_file_age, ))
|
|
print("header_spare_room: %s" % (self.header_spare_room, ))
|
|
|
|
print("Bone Tracks:")
|
|
for bt in self.bone_tracks:
|
|
bt.dump()
|
|
if self.skeleton_hierarchy is not None:
|
|
self.skeleton_hierarchy.dump()
|
|
pass
|
|
|
|
def checkSkeletonHierarchy(self):
|
|
if self.skeleton_hierarchy is None:
|
|
return False
|
|
return True
|
|
def checkSkeletonBones(self):
|
|
if self.skeleton_hierarchy is None:
|
|
return False
|
|
seen = []
|
|
if self.checkSkeletonBonesBody(self.skeleton_hierarchy.root, seen):
|
|
return True
|
|
return False
|
|
def checkSkeletonBonesBody(self, bone_id, seen):
|
|
if bone_id == -1:
|
|
return True
|
|
if bone_id < -1:
|
|
return False
|
|
if bone_id in seen:
|
|
return False
|
|
seen.append(bone_id)
|
|
bones = self.skeleton_hierarchy.bones
|
|
if bone_id >= len(bones):
|
|
return False
|
|
if bones[bone_id].boneid != bone_id:
|
|
return False
|
|
if not self.checkSkeletonBonesBody(bones[bone_id].next, seen):
|
|
return False
|
|
if not self.checkSkeletonBonesBody(bones[bone_id].child, seen):
|
|
return False
|
|
return True
|
|
if __name__ == "__main__":
|
|
if len(sys.argv) <= 1 or len(sys.argv) > 3:
|
|
print("Usage:")
|
|
print(" %s <file_in> [<file_out>]" % (sys.argv[0], ))
|
|
print("Test loads a .anim file, dumps its content, and optionally writes its content out.")
|
|
exit(0)
|
|
fh = open(sys.argv[1], "rb")
|
|
anim = Anim()
|
|
anim.loadFromFile(fh)
|
|
fh.close()
|
|
#print(sys.argv)
|
|
if len(sys.argv) <= 2:
|
|
fho = None
|
|
else:
|
|
fho = open(sys.argv[2], "wb")
|
|
if fho is not None:
|
|
data = anim.saveToData()
|
|
#anim.dump()
|
|
fho.write(data)
|
|
else:
|
|
anim.dump()
|
|
#print("%s" % [anim.header_data])
|
|
|