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m3export.py
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#!/usr/bin/python3
# -*- coding: utf-8 -*-
# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
from typing import Iterable, List, Dict
from . import m3
from . import shared
from .shared import ExportError
from . import cm
from .common import mlog
import bpy
import mathutils
import os.path
import time
import math
actionTypeScene = "SCENE"
actionTypeArmature = "OBJECT"
class ExportErrorMODLVersionInsufficient(ExportError):
def __init__(self, minVersion: int, cause: str = None):
super().__init__(f'Unable to export in choosen version of m3 container, try version {minVersion} or higher. Reason: {cause}.')
class Exporter:
def __init__(self, scene: bpy.types.Scene, operator: bpy.types.Operator):
self.scene = scene
self.operator = operator
def export(self, m3FileName):
self.initStructureVersionMap()
self.selectAnimationsForExport()
self.isAnimationExport = m3FileName.endswith(".m3a")
if bpy.ops.object.mode_set.poll():
bpy.ops.object.mode_set(mode='OBJECT')
self.generatedAnimIdCounter = 0
self.boundingAnimId = 0x1f9bd2
if self.scene.render.fps != 30:
print("Warning: The currently configured frame rate is %s. For compability the model will be exported with a frame rate of 30." % self.scene.render.fps)
self.boneIndexToDefaultAbsoluteMatrixMap = {}
self.animationNameToFrameToBoneIndexToAbsoluteMatrixMap = {}
self.prepareAnimIdMaps()
self.nameToAnimIdToAnimDataMap = {}
self.restPositionsOfExportedBones = []
for animationIndex in self.animationIndicesToExport:
animation = self.scene.m3_animations[animationIndex]
if animation.name in self.nameToAnimIdToAnimDataMap:
raise ExportError("Animations must have unique names. Use number suffixes like 'Stand 01' and 'Stand 02'")
self.nameToAnimIdToAnimDataMap[animation.name] = {}
self.initOldReferenceIndicesInCorrectedOrder()
self.initMaterialNameToNewReferenceIndexMap()
model = self.createModel(m3FileName)
m3.saveAndInvalidateModel(model, m3FileName)
def initStructureVersionMap(self):
self.structureVersionMap = {}
if self.scene.m3_export_options.modlVersion == "29":
self.structureVersionMap["MODL"] = 29
self.structureVersionMap["EVNT"] = 2
self.structureVersionMap["SEQS"] = 2
self.structureVersionMap["LAYR"] = 26
self.structureVersionMap["MAT_"] = 20
self.structureVersionMap["PAR_"] = 24
self.structureVersionMap["PROJ"] = 5
self.structureVersionMap["PHSH"] = 3
self.structureVersionMap["PHRB"] = 4
self.structureVersionMap["RIB_"] = 9
elif self.scene.m3_export_options.modlVersion == "26":
self.structureVersionMap["MODL"] = 26
self.structureVersionMap["EVNT"] = 2
self.structureVersionMap["SEQS"] = 2
self.structureVersionMap["LAYR"] = 25
self.structureVersionMap["MAT_"] = 18
self.structureVersionMap["PAR_"] = 23
self.structureVersionMap["PROJ"] = 5
self.structureVersionMap["PHSH"] = 3
self.structureVersionMap["PHRB"] = 4
self.structureVersionMap["RIB_"] = 8
elif self.scene.m3_export_options.modlVersion == "23":
self.structureVersionMap["MODL"] = 23
self.structureVersionMap["EVNT"] = 1
self.structureVersionMap["SEQS"] = 1
self.structureVersionMap["LAYR"] = 22
self.structureVersionMap["MAT_"] = 15
self.structureVersionMap["PAR_"] = 12
self.structureVersionMap["PROJ"] = 4
self.structureVersionMap["PHSH"] = 1
self.structureVersionMap["PHRB"] = 2
self.structureVersionMap["RIB_"] = 6
else:
raise ExportError('Unsupported M3 container: V%s' % self.scene.m3_export_options.modlVersion)
self.structureVersionMap["BONE"] = 1
self.structureVersionMap["Vector3AnimationReference"] = 0
self.structureVersionMap["QuaternionAnimationReference"] = 0
self.structureVersionMap["SD3V"] = 0
self.structureVersionMap["SD4Q"] = 0
self.structureVersionMap["SD3V"] = 0
self.structureVersionMap["SDEV"] = 0
self.structureVersionMap["SDU6"] = 0
self.structureVersionMap["VertexFormat0x182027d"] = 0
self.structureVersionMap["VertexFormat0x182007d"] = 0
self.structureVersionMap["VertexFormat0x186007d"] = 0
self.structureVersionMap["VertexFormat0x186027d"] = 0
self.structureVersionMap["VertexFormat0x18e007d"] = 0
self.structureVersionMap["VertexFormat0x19e007d"] = 0
self.structureVersionMap["DIV_"] = 2
self.structureVersionMap["REGN"] = 3
self.structureVersionMap["BAT_"] = 1
self.structureVersionMap["Vector3As3Fixed8"] = 0
self.structureVersionMap["Vector2As2int16"] = 0
self.structureVersionMap["STG_"] = 0
self.structureVersionMap["STC_"] = 4
self.structureVersionMap["STS_"] = 0
self.structureVersionMap["CAM_"] = 3
self.structureVersionMap["SSGS"] = 1
self.structureVersionMap["PARC"] = 0
self.structureVersionMap["FOR_"] = 1
self.structureVersionMap["LITE"] = 7
self.structureVersionMap["BBSC"] = 0
self.structureVersionMap["ATT_"] = 1
self.structureVersionMap["ATVL"] = 0
self.structureVersionMap["COL"] = 0
self.structureVersionMap["Matrix44"] = 0
self.structureVersionMap["IREF"] = 0
self.structureVersionMap["DIS_"] = 4
self.structureVersionMap["CMP_"] = 2
self.structureVersionMap["CMS_"] = 0
self.structureVersionMap["TER_"] = 0
self.structureVersionMap["VOL_"] = 0
self.structureVersionMap["CREP"] = 0
self.structureVersionMap["VON_"] = 0
self.structureVersionMap["Vector2AnimationReference"] = 0
self.structureVersionMap["Int16AnimationReference"] = 0
self.structureVersionMap["UInt16AnimationReference"] = 0
self.structureVersionMap["UInt32AnimationReference"] = 0
self.structureVersionMap["FloatAnimationReference"] = 0
self.structureVersionMap["AnimationReferenceHeader"] = 0
self.structureVersionMap["MATM"] = 0
self.structureVersionMap["MSEC"] = 1
self.structureVersionMap["BNDSV0AnimationReference"] = 0
self.structureVersionMap["BNDS"] = 0
self.structureVersionMap["VEC4"] = 0
self.structureVersionMap["QUAT"] = 0
self.structureVersionMap["VEC3"] = 0
self.structureVersionMap["VEC2"] = 0
self.structureVersionMap["ColorAnimationReference"] = 0
self.structureVersionMap["SDCC"] = 0
self.structureVersionMap["SDR3"] = 0
self.structureVersionMap["SDS6"] = 0
self.structureVersionMap["FLAG"] = 0
self.structureVersionMap["SDMB"] = 0
self.structureVersionMap["SD2V"] = 0
self.structureVersionMap["FlagAnimationReference"] = 0
self.structureVersionMap["SVC3"] = 0
self.structureVersionMap["WRP_"] = 1
self.structureVersionMap["SRIB"] = 0
self.structureVersionMap["STBM"] = 0
self.structureVersionMap["SDFG"] = 0
self.structureVersionMap["SDU3"] = 0
self.structureVersionMap["IKJT"] = 0
self.structureVersionMap["TRGD"] = 0
self.structureVersionMap["PATU"] = 4
self.structureVersionMap["PHYJ"] = 0
def getVersionOf(self, structureName):
return self.structureVersionMap[structureName]
def createInstanceOf(self, structureName):
version = self.structureVersionMap[structureName]
structureDescription = m3.structures[structureName].getVersion(version)
return structureDescription.createInstance()
def selectAnimationsForExport(self):
scene = self.scene
animationExportAmount = scene.m3_export_options.animationExportAmount
if animationExportAmount == shared.exportAmountAllAnimations:
self.animationIndicesToExport = range(len(scene.m3_animations))
elif animationExportAmount == shared.exportAmountCurrentAnimation:
self.animationIndicesToExport = [scene.m3_animation_index]
elif animationExportAmount == shared.exportAmountNoAnimations:
self.animationIndicesToExport = []
else:
raise ExportError("Unsupported export amount option: %s" % scene.m3_export_options)
def createModel(self, m3FileName):
model = self.createInstanceOf("MODL")
model.modelName = os.path.basename(m3FileName)
self.initBones(model)
self.initMesh(model)
self.initMaterials(model)
self.initCameras(model)
self.initFuzzyHitTests(model)
self.initTighHitTest(model)
self.initParticles(model)
self.initRibbons(model)
self.initProjections(model)
self.initWarps(model)
self.initForces(model)
self.initRigidBodies(model)
self.initLights(model)
self.initBillboardBehaviors(model)
self.initIkChains(model)
self.initTurretBehaviors(model)
self.initPhysicsJoints(model)
self.initVisibilityTest(model)
# TODO remove call and method:
# self.initBoundings(model)
self.initAttachmentPoints(model)
self.prepareAnimationEndEvents()
self.initWithPreparedAnimationData(model)
model.uniqueUnknownNumber = self.getAnimIdFor(shared.animObjectIdModel, "")
self.updateAnimationIdsOfBlendFile()
return model
def prepareAnimIdMaps(self):
self.longAnimIdToAnimIdMap = {}
self.usedAnimIds = {self.boundingAnimId}
for animIdData in self.scene.m3_animation_ids:
animId = animIdData.animIdMinus2147483648 + 2147483648
longAnimId = animIdData.longAnimId
self.longAnimIdToAnimIdMap[longAnimId] = animId
self.usedAnimIds.add(animId)
def getAnimIdForLongAnimId(self, longAnimId):
animId = self.longAnimIdToAnimIdMap.get(longAnimId)
if animId is None:
animId = shared.getRandomAnimIdNotIn(self.usedAnimIds)
self.usedAnimIds.add(animId)
self.longAnimIdToAnimIdMap[longAnimId] = animId
return animId
def updateAnimationIdsOfBlendFile(self):
self.scene.m3_animation_ids.clear()
for longAnimId, animId in self.longAnimIdToAnimIdMap.items():
if animId in self.usedAnimIds:
animIdData = self.scene.m3_animation_ids.add()
animIdData.animIdMinus2147483648 = animId - 2147483648
animIdData.longAnimId = longAnimId
def getAnimIdFor(self, objectId, animPath):
longAnimId = shared.getLongAnimIdOf(objectId, animPath)
return self.getAnimIdForLongAnimId(longAnimId)
def createUniqueAnimId(self):
self.generatedAnimIdCounter += 1 # increase first since we don't want to use 0 as animation id
return self.generatedAnimIdCounter
def initBones(self, model):
self.boneNameToDefaultPoseMatrixMap = {}
self.boneNameToM3SpaceDefaultLocationMap = {}
self.boneNameToM3SpaceDefaultRotationMap = {}
self.boneNameToM3SpaceDefaultScaleMap = {}
self.boneNameToLeftCorrectionMatrix = {}
self.boneNameToRightCorrectionMatrix = {}
self.boneNameToBoneIndexMap = {} # map: bone name to index in model bone list
boneNameToAbsInvRestPoseMatrix = {}
self.boneIndexToAbsoluteInverseRestPoseMatrixFixedMap = {}
self.armatureObjectNameToBoneNamesMap: Dict[str, bpy.types.Object] = {}
# Place all bones at the default position by selecting no animation:
self.scene.m3_animation_index = -1
self.scene.frame_set(0)
for armatureObject in self.findArmatureObjects():
armature = armatureObject.data
objectToWorldMatrix = armatureObject.matrix_world
boneNamesOfArmature = list()
self.armatureObjectNameToBoneNamesMap[armatureObject.name] = boneNamesOfArmature
for blenderBoneIndex, blenderBone in enumerate(armature.bones):
boneIndex = len(model.bones)
boneName = blenderBone.name
if boneName in self.boneNameToBoneIndexMap:
raise ExportError("There are multiple bones with the name %s" % blenderBone.name)
boneNamesOfArmature.append(boneName)
self.boneNameToBoneIndexMap[boneName] = boneIndex
locationAnimPath = 'pose.bones["%s"].location' % boneName
rotationAnimPath = 'pose.bones["%s"].rotation_quaternion' % boneName
scaleAnimPath = 'pose.bones["%s"].scale' % boneName
locationAnimId = self.getAnimIdFor(shared.animObjectIdArmature, locationAnimPath)
rotationAnimId = self.getAnimIdFor(shared.animObjectIdArmature, rotationAnimPath)
scaleAnimId = self.getAnimIdFor(shared.animObjectIdArmature, scaleAnimPath)
bone = self.createInstanceOf("BONE")
bone.name = boneName
bone.flags = 0
bone.setNamedBit("flags", "real", True)
bone.location = self.createInstanceOf("Vector3AnimationReference")
bone.location.header = self.createNullAnimHeader(animId=locationAnimId, interpolationType=1)
bone.rotation = self.createInstanceOf("QuaternionAnimationReference")
bone.rotation.header = self.createNullAnimHeader(animId=rotationAnimId, interpolationType=1)
bone.scale = self.createInstanceOf("Vector3AnimationReference")
bone.scale.header = self.createNullAnimHeader(animId=scaleAnimId, interpolationType=1)
bone.ar1 = self.createNullUInt32AnimationReference(1)
model.bones.append(bone)
absRestPosMatrix = objectToWorldMatrix @ blenderBone.matrix_local
self.restPositionsOfExportedBones.append(absRestPosMatrix.translation.copy())
if not blenderBone.use_inherit_rotation:
raise ExportError("The setting inhertRotation=false of bone %s is not exportable!" % boneName)
if not blenderBone.use_inherit_scale:
raise ExportError("The setting inhertScale=false of bone %s is not exportable!" % boneName)
if blenderBone.parent is not None:
bone.parent = self.boneNameToBoneIndexMap[blenderBone.parent.name]
absInvRestPoseMatrixParent = boneNameToAbsInvRestPoseMatrix[blenderBone.parent.name]
relRestPosMatrix = absInvRestPoseMatrixParent @ absRestPosMatrix
else:
bone.parent = -1
relRestPosMatrix = absRestPosMatrix
poseBone: bpy.types.Bone = armatureObject.pose.bones[boneName]
poseMatrix = armatureObject.convert_space(
pose_bone=poseBone,
matrix=poseBone.matrix,
from_space='POSE',
to_space='LOCAL',
)
bindScaleInverted = mathutils.Vector((1.0 / blenderBone.m3_bind_scale[i] for i in range(3)))
bindScaleMatrixInverted = shared.scaleVectorToMatrix(bindScaleInverted)
if blenderBone.parent is not None:
parentBindMatrix = shared.scaleVectorToMatrix(blenderBone.parent.m3_bind_scale)
leftCorrectionMatrix = parentBindMatrix @ shared.rotFixMatrix @ relRestPosMatrix
else:
leftCorrectionMatrix = relRestPosMatrix
rightCorrectionMatrix = shared.rotFixMatrixInverted @ bindScaleMatrixInverted
m3PoseMatrix = leftCorrectionMatrix @ poseMatrix @ rightCorrectionMatrix
self.boneNameToLeftCorrectionMatrix[boneName] = leftCorrectionMatrix
self.boneNameToRightCorrectionMatrix[boneName] = rightCorrectionMatrix
m3SpaceLocation, m3SpaceRotation, m3SpaceScale = m3PoseMatrix.decompose()
bone.scale.initValue = self.createVector3FromBlenderVector(m3SpaceScale)
bone.scale.nullValue = self.createVector3(0.0, 0.0, 0.0)
bone.rotation.initValue = self.createQuaternionFromBlenderQuaternion(m3SpaceRotation)
bone.rotation.nullValue = self.createQuaternion(0.0, 0.0, 0.0, 1.0)
bone.location.initValue = self.createVector3FromBlenderVector(m3SpaceLocation)
bone.location.nullValue = self.createVector3(0.0, 0.0, 0.0)
self.boneNameToM3SpaceDefaultLocationMap[boneName] = m3SpaceLocation
self.boneNameToM3SpaceDefaultRotationMap[boneName] = m3SpaceRotation
self.boneNameToM3SpaceDefaultScaleMap[boneName] = m3SpaceScale
# calculate the bind matrix / absoluteInverseRestPoseMatrixFixed
absRestPosMatrixFixed = absRestPosMatrix @ shared.rotFixMatrixInverted
bindScale = blenderBone.m3_bind_scale
bindScaleMatrix = shared.scaleVectorToMatrix(bindScale)
absoluteInverseRestPoseMatrixFixed = absRestPosMatrixFixed.inverted()
absoluteInverseRestPoseMatrixFixed = bindScaleMatrix @ absoluteInverseRestPoseMatrixFixed
absoluteInverseBoneRestPos = self.createRestPositionFromBlender4x4Matrix(absoluteInverseRestPoseMatrixFixed)
model.absoluteInverseBoneRestPositions.append(absoluteInverseBoneRestPos)
self.boneIndexToAbsoluteInverseRestPoseMatrixFixedMap[boneIndex] = absoluteInverseRestPoseMatrixFixed
boneNameToAbsInvRestPoseMatrix[blenderBone.name] = absRestPosMatrix.inverted()
# Calculate the absolute matrix of this bone in default position
# for later default boundings calculation
absoluteBoneMatrix = m3PoseMatrix
if (bone.parent != -1):
# The parent matrix has it's absoluteInverseRestPoseMatrixFixed multiplied to it. It needs to be undone:
parentMatrix = self.boneIndexToDefaultAbsoluteMatrixMap[bone.parent] @ self.boneIndexToAbsoluteInverseRestPoseMatrixFixedMap[bone.parent].inverted()
absoluteBoneMatrix = parentMatrix @ absoluteBoneMatrix
absoluteBoneMatrix = absoluteBoneMatrix @ absoluteInverseRestPoseMatrixFixed
self.boneIndexToDefaultAbsoluteMatrixMap[boneIndex] = absoluteBoneMatrix
startTime = time.time()
self.initBoneAnimations(model)
endTime = time.time()
duration = endTime - startTime
print("Bone animation export took %s seconds" % duration)
def initBoneAnimations(self, model):
for animationIndex in self.animationIndicesToExport:
animation = self.scene.m3_animations[animationIndex]
print("Calculating bone movement done in animation %s" % animation.name)
self.scene.m3_animation_index = animationIndex
frames = set()
# For animated rotations all frames are needed,
# since Starcraft 2 isn't correcting the linearly interpolated values
# In addition the bone matrices are needed for each frame
# to calculate the mesh boundings in a later step
#
frames = self.allFramesOfAnimation(animation)
timeValuesInMS = self.allFramesToMSValues(frames)
frameToBoneIndexToAbsoluteMatrixMap = self.animationNameToFrameToBoneIndexToAbsoluteMatrixMap.get(animation.name)
if frameToBoneIndexToAbsoluteMatrixMap is None:
frameToBoneIndexToAbsoluteMatrixMap = {}
self.animationNameToFrameToBoneIndexToAbsoluteMatrixMap[animation.name] = frameToBoneIndexToAbsoluteMatrixMap
boneNameToLocations = {}
boneNameToRotations = {}
boneNameToScales = {}
for armatureObjectName, boneNamesOfArmature in self.armatureObjectNameToBoneNamesMap.items():
for boneName in boneNamesOfArmature:
boneNameToLocations[boneName] = []
boneNameToRotations[boneName] = []
boneNameToScales[boneName] = []
# Jog animation frame so that complicated bone constraints are given time to be properly calculated before proceeding
self.scene.frame_set(0)
for frame in frames:
self.scene.frame_set(frame)
for armatureObjectName, boneNamesOfArmature in self.armatureObjectNameToBoneNamesMap.items():
armatureObject = bpy.data.objects[armatureObjectName]
for boneName in boneNamesOfArmature:
boneIndex = self.boneNameToBoneIndexMap[boneName]
bone = model.bones[boneIndex]
poseBone = armatureObject.pose.bones[boneName]
leftCorrectionMatrix = self.boneNameToLeftCorrectionMatrix[boneName]
rightCorrectionMatrix = self.boneNameToRightCorrectionMatrix[boneName]
poseMatrix = armatureObject.convert_space(
pose_bone=poseBone,
matrix=poseBone.matrix,
from_space='POSE',
to_space='LOCAL',
)
m3PoseMatrix = leftCorrectionMatrix @ poseMatrix @ rightCorrectionMatrix
boneIndexToAbsoluteMatrixMap = frameToBoneIndexToAbsoluteMatrixMap.get(frame)
if boneIndexToAbsoluteMatrixMap is None:
boneIndexToAbsoluteMatrixMap = {}
frameToBoneIndexToAbsoluteMatrixMap[frame] = boneIndexToAbsoluteMatrixMap
absoluteBoneMatrix = m3PoseMatrix
if (bone.parent != -1):
# The parent matrix has it's absoluteInverseRestPoseMatrixFixed multiplied to it. It needs to be undone:
parentMatrix = boneIndexToAbsoluteMatrixMap[bone.parent] @ self.boneIndexToAbsoluteInverseRestPoseMatrixFixedMap[bone.parent].inverted()
absoluteBoneMatrix = parentMatrix @ absoluteBoneMatrix
absoluteInverseRestPoseMatrixFixed = self.boneIndexToAbsoluteInverseRestPoseMatrixFixedMap[boneIndex]
absoluteBoneMatrix = absoluteBoneMatrix @ absoluteInverseRestPoseMatrixFixed
boneIndexToAbsoluteMatrixMap[boneIndex] = absoluteBoneMatrix
locations = boneNameToLocations[boneName]
rotations = boneNameToRotations[boneName]
scales = boneNameToScales[boneName]
loc, rot, sca = m3PoseMatrix.decompose()
locations.append(loc)
rotations.append(rot)
scales.append(sca)
for armatureObjectName, boneNamesOfArmature in self.armatureObjectNameToBoneNamesMap.items():
for boneName in boneNamesOfArmature:
boneIndex = self.boneNameToBoneIndexMap[boneName]
bone = model.bones[boneIndex]
locations = boneNameToLocations[boneName]
rotations = boneNameToRotations[boneName]
scales = boneNameToScales[boneName]
self.makeQuaternionsInterpolatable(rotations)
animIdToAnimDataMap = self.nameToAnimIdToAnimDataMap[animation.name]
m3SpaceLocation = self.boneNameToM3SpaceDefaultLocationMap[boneName]
m3SpaceRotation = self.boneNameToM3SpaceDefaultRotationMap[boneName]
m3SpaceScale = self.boneNameToM3SpaceDefaultScaleMap[boneName]
locationAnimPath = 'pose.bones["%s"].location' % boneName
rotationAnimPath = 'pose.bones["%s"].rotation_quaternion' % boneName
scaleAnimPath = 'pose.bones["%s"].scale' % boneName
locationAnimId = self.getAnimIdFor(shared.animObjectIdArmature, locationAnimPath)
rotationAnimId = self.getAnimIdFor(shared.animObjectIdArmature, rotationAnimPath)
scaleAnimId = self.getAnimIdFor(shared.animObjectIdArmature, scaleAnimPath)
if self.isAnimationExport or self.vectorArrayContainsNotOnly(locations, m3SpaceLocation):
locationTimeValuesInMS, locations = shared.simplifyVectorAnimationWithInterpolation(timeValuesInMS, locations)
m3Locs = self.createVector3sFromBlenderVectors(locations)
m3AnimBlock = self.createInstanceOf("SD3V")
m3AnimBlock.frames = locationTimeValuesInMS
m3AnimBlock.flags = 0
m3AnimBlock.fend = self.frameToMS(animation.exlusiveEndFrame)
m3AnimBlock.keys = m3Locs
animIdToAnimDataMap[locationAnimId] = m3AnimBlock
bone.location.header.animFlags = shared.animFlagsForAnimatedProperty
bone.setNamedBit("flags", "animated", True)
if self.isAnimationExport or self.quaternionArrayContainsNotOnly(rotations, m3SpaceRotation):
rotationTimeValuesInMS, rotations = shared.simplifyQuaternionAnimationWithInterpolation(timeValuesInMS, rotations)
m3Rots = self.createQuaternionsFromBlenderQuaternions(rotations)
m3AnimBlock = self.createInstanceOf("SD4Q")
m3AnimBlock.frames = rotationTimeValuesInMS
m3AnimBlock.flags = 0
m3AnimBlock.fend = self.frameToMS(animation.exlusiveEndFrame)
m3AnimBlock.keys = m3Rots
animIdToAnimDataMap[rotationAnimId] = m3AnimBlock
bone.rotation.header.animFlags = shared.animFlagsForAnimatedProperty
bone.setNamedBit("flags", "animated", True)
if self.isAnimationExport or self.vectorArrayContainsNotOnly(scales, m3SpaceScale):
scaleTimeValuesInMS, scales = shared.simplifyVectorAnimationWithInterpolation(timeValuesInMS, scales)
m3Scas = self.createVector3sFromBlenderVectors(scales)
m3AnimBlock = self.createInstanceOf("SD3V")
m3AnimBlock.frames = scaleTimeValuesInMS
m3AnimBlock.flags = 0
m3AnimBlock.fend = self.frameToMS(animation.exlusiveEndFrame)
m3AnimBlock.keys = m3Scas
animIdToAnimDataMap[scaleAnimId] = m3AnimBlock
bone.scale.header.animFlags = shared.animFlagsForAnimatedProperty
bone.setNamedBit("flags", "animated", True)
def initVisibilityTest(self, model):
halfSize = self.scene.m3_visibility_test.size / 2.0
minBorder = self.scene.m3_visibility_test.center - halfSize
maxBorder = self.scene.m3_visibility_test.center + halfSize
model.boundings.radius = self.scene.m3_visibility_test.radius
model.boundings.minBorder = self.blenderToM3Vector(minBorder)
model.boundings.maxBorder = self.blenderToM3Vector(maxBorder)
def allFramesOfAnimation(self, animation):
# In Starcraft 2 there is one more key frame then there is usually in Blender:
# 3 Blender key frames at the times 0, 33, 67 give a an animation for the time 0 to 100 (at 30 FPS)
# For Starcraft 2 4 key frames are needed: 0, 33, 67 and 100.
# For a smooth loop the key frame data of 0 and 100 need to be the same.
return list(range(animation.startFrame, animation.exlusiveEndFrame + 1))
def vectorArrayContainsNotOnly(self, vectorArray, vector):
for v in vectorArray:
if not shared.vectorsAlmostEqual(vector, v):
return True
return False
def quaternionArrayContainsNotOnly(self, quaternionArray, quaternion):
for q in quaternionArray:
if not shared.quaternionsAlmostEqual(quaternion, q):
return True
return False
def initOldReferenceIndicesInCorrectedOrder(self):
scene = self.scene
materialNameToOldReferenceIndexMap = {}
for materialReferenceIndex, materialReference in enumerate(self.scene.m3_material_references):
materialNameToOldReferenceIndexMap[materialReference.name] = materialReferenceIndex
remainingMaterials = list(range(len(self.scene.m3_material_references)))
self.oldReferenceIndicesInCorrectedOrder = []
while len(remainingMaterials) > 0:
unableToDefineChildsFirst = True
for oldReferenceIndex in remainingMaterials:
reference = scene.m3_material_references[oldReferenceIndex]
canBeDefined = True
if reference.materialType == shared.compositeMaterialTypeIndex:
compositeMaterial = scene.m3_composite_materials[reference.materialIndex]
for sectionIndex, section in enumerate(compositeMaterial.sections):
oldChildReferenceIndex = materialNameToOldReferenceIndexMap.get(section.name)
if oldChildReferenceIndex is None:
raise ExportError("The composite material %s uses '%s' as material, but no m3 material with that name exist!" % (compositeMaterial.name, section.name))
if oldChildReferenceIndex not in self.oldReferenceIndicesInCorrectedOrder:
canBeDefined = False
if canBeDefined:
remainingMaterials.remove(oldReferenceIndex)
self.oldReferenceIndicesInCorrectedOrder.append(oldReferenceIndex)
unableToDefineChildsFirst = False
break
if unableToDefineChildsFirst:
raise Exception("Unable to define all sections before the actual composite material: Is there a loop back?")
def initMaterialNameToNewReferenceIndexMap(self):
self.materialNameToNewReferenceIndexMap = {}
for newRefeferenceIndex, oldReferenceIndex in enumerate(self.oldReferenceIndicesInCorrectedOrder):
materialReference = self.scene.m3_material_references[oldReferenceIndex]
self.materialNameToNewReferenceIndexMap[materialReference.name] = newRefeferenceIndex
def initMesh(self, model):
nonEmptyMeshObjects: List[bpy.types.Object] = []
uvCoordinatesPerVertex = 1 # Never saw a m3 model with at least 1 UV layer
for meshObject in shared.findMeshObjects(self.scene):
mesh: bpy.types.Mesh = meshObject.data
mesh.calc_loop_triangles()
if len(mesh.loop_triangles) > 0 and not mesh.m3_physics_mesh:
nonEmptyMeshObjects.append(meshObject)
uvCoordinatesPerVertex = max(uvCoordinatesPerVertex, len(mesh.uv_layers))
model.setNamedBit("flags", "hasMesh", len(nonEmptyMeshObjects) > 0)
model.boundings = self.createAlmostEmptyBoundingsWithRadius(2.0)
if len(nonEmptyMeshObjects) == 0:
model.numberOfBonesToCheckForSkin = 0
model.divisions = [self.createEmptyDivision()]
return
if uvCoordinatesPerVertex not in [1, 2, 3, 4]:
raise Exception("The m3 format seems to supports only 1-4 UV layers per mesh, not %d" % uvCoordinatesPerVertex)
model.vFlags = 0x182007d
if uvCoordinatesPerVertex >= 2:
model.setNamedBit("vFlags", "useUVChannel1", True)
if uvCoordinatesPerVertex >= 3:
model.setNamedBit("vFlags", "useUVChannel2", True)
if uvCoordinatesPerVertex >= 4:
model.setNamedBit("vFlags", "useUVChannel3", True)
rgbColorChannelName = "color"
alphaColorChannelName = "alpha"
exportVertexRGBA = False
for meshObjectToCheck in nonEmptyMeshObjects:
meshToCheck: bpy.types.Mesh = meshObjectToCheck.data
for vertexColorLayer in meshToCheck.vertex_colors:
vertexColorLayerName = vertexColorLayer.name
if vertexColorLayerName == rgbColorChannelName:
exportVertexRGBA = True
elif vertexColorLayerName == alphaColorChannelName:
exportVertexRGBA = True
else:
print("The mesh %s has has a color layer called %s. Only color layers with the names 'color' and 'alpha' can be exported" % (meshObjectToCheck.name, vertexColorLayerName))
model.setNamedBit("vFlags", "hasVertexColors", exportVertexRGBA)
m3VertexStructureDefinition = m3.structures["VertexFormat" + hex(model.vFlags)].getVersion(0)
division = self.createInstanceOf("DIV_")
model.divisions.append(division)
m3Vertices = []
for meshIndex, meshObject in enumerate(nonEmptyMeshObjects):
mesh: bpy.types.Mesh = meshObject.data
print("Exporting mesh object %s" % meshObject.name)
signGroup = mesh.polygon_layers_int.get("m3sign") or mesh.polygon_layers_int.new(name="m3sign")
if bpy.ops.object.mode_set.poll():
bpy.ops.object.mode_set(mode='OBJECT')
bpy.ops.object.select_all(action='DESELECT')
self.scene.view_layers[0].objects.active = meshObject
meshObject.select_set(True)
bpy.ops.object.duplicate()
meshObjectCopy = self.scene.view_layers[0].objects.active
bpy.ops.object.modifier_apply(modifier='EdgeSplit')
mesh = meshObjectCopy.data
meshObject = meshObjectCopy
mesh.update()
materialReferenceIndex = self.materialNameToNewReferenceIndexMap.get(mesh.m3_material_name)
if materialReferenceIndex is None:
raise ExportError("The mesh %s uses '%s' as material, but no m3 material with that name exist!" % (mesh.name, mesh.m3_material_name))
firstBoneLookupIndex = len(model.boneLookup)
staticMeshBoneName = "StaticMesh"
boneNameToBoneLookupIndexMap = {}
boneNamesOfArmature = set()
if len(meshObject.modifiers) == 0:
pass
elif len(meshObject.modifiers) == 1 and (meshObject.modifiers[0].type == "ARMATURE"):
modifier = meshObject.modifiers[0]
armatureObject = modifier.object
if armatureObject is not None:
armature = armatureObject.data
for blenderBoneIndex, blenderBone in enumerate(armature.bones):
boneNamesOfArmature.add(blenderBone.name)
else:
raise ExportError("The mesh %s has invalid modifiers: Mesh must have no modifiers except single one for the armature and one for edge split." % meshObject.name)
objectToWorldMatrix = meshObject.matrix_world
vertexColor = mesh.vertex_colors.get(rgbColorChannelName)
if vertexColor is not None:
vertexColorData = vertexColor.data
else:
vertexColorData = None
vertexAlpha = mesh.vertex_colors.get(alphaColorChannelName)
if vertexAlpha is not None:
vertexAlphaData = vertexAlpha.data
else:
vertexAlphaData = None
firstFaceVertexIndexIndex = len(division.faces)
firstVertexIndexIndex = len(m3Vertices)
regionFaceVertexIndices = []
regionVertices = []
vertexDataTupleToIndexMap = {}
nextVertexIndex = 0
numberOfBoneWeightPairsPerVertex = 0
staticMeshBoneLookupIndex = None
mesh.calc_loop_triangles()
def normalize(x, y, z):
length = math.sqrt(x * x + y * y + z * z)
if length == 0:
return 0.0, 0.0, 0.0
return (x / length, y / length, z / length)
for tri in mesh.loop_triangles:
assert(len(tri.vertices) == 3)
# Calculate tangents
vertex0 = meshObject.data.vertices[tri.vertices[0]]
vertex1 = meshObject.data.vertices[tri.vertices[1]]
vertex2 = meshObject.data.vertices[tri.vertices[2]]
uv0 = meshObject.data.uv_layers[0].data[tri.loops[0]].uv
uv1 = meshObject.data.uv_layers[0].data[tri.loops[1]].uv
uv2 = meshObject.data.uv_layers[0].data[tri.loops[2]].uv
v0 = uv0[1]
v1 = uv1[1]
v2 = uv2[1]
deltaV1 = v1 - v0
deltaV2 = v2 - v0
e1x = vertex1.co.x - vertex0.co.x
e1y = vertex1.co.y - vertex0.co.y
e1z = vertex1.co.z - vertex0.co.z
e2x = vertex2.co.x - vertex0.co.x
e2y = vertex2.co.y - vertex0.co.y
e2z = vertex2.co.z - vertex0.co.z
tx = (deltaV2 * e1x - deltaV1 * e2x)
ty = (deltaV2 * e1y - deltaV1 * e2y)
tz = (deltaV2 * e1z - deltaV1 * e2z)
tx, ty, tz = normalize(tx, ty, tz)
for faceRelativeVertexIndex, vertIndex in enumerate(tri.vertices):
blenderVertex = mesh.vertices[vertIndex]
m3Vertex = m3VertexStructureDefinition.createInstance()
absolutePosition = objectToWorldMatrix @ blenderVertex.co
m3Vertex.position = self.blenderToM3Vector(absolutePosition)
weightLookupIndexPairs = []
for gIndex, g in enumerate(blenderVertex.groups):
vertexGroupIndex = g.group
# It seems like the group data can become corrupted in Blender:
if vertexGroupIndex < len(meshObject.vertex_groups):
vertexGroup = meshObject.vertex_groups[vertexGroupIndex]
boneIndex = self.boneNameToBoneIndexMap.get(vertexGroup.name)
if boneIndex is not None and vertexGroup.name in boneNamesOfArmature:
boneLookupIndex = boneNameToBoneLookupIndexMap.get(vertexGroup.name)
if boneLookupIndex is None:
boneLookupIndex = len(model.boneLookup) - firstBoneLookupIndex
model.boneLookup.append(boneIndex)
boneNameToBoneLookupIndexMap[vertexGroup.name] = boneLookupIndex
bone = model.bones[boneIndex]
bone.setNamedBit("flags", "skinned", True)
boneWeight = sorted((round(g.weight * 255), 0, 255))[1]
if boneWeight != 0:
if len(weightLookupIndexPairs) < 4:
weightLookupIndexPairs.append((g.weight, boneLookupIndex))
totalWeight = 0
for weight, lookupIndex in weightLookupIndexPairs:
totalWeight += weight
# This algorithm is aiming at ensuring that roundedWeightSum is 255 at the end
# Since correctedWeightSum is 1.0000XXXXX at the end,
# roundedWeightSum will be exactly 255.
roundedWeightLookupIndexPairs = []
correctedWeightSum = 0.0
roundedWeightSum = 0
for weight, lookupIndex in weightLookupIndexPairs:
correctedWeight = weight / totalWeight
correctedWeightSum += correctedWeight
newRoundedWeithSum = round(correctedWeightSum * 255.0)
roundedWeight = newRoundedWeithSum - roundedWeightSum
roundedWeightSum = newRoundedWeithSum
roundedWeightLookupIndexPairs.append((roundedWeight, lookupIndex))
weightIndex = 0
for roundedWeight, lookupIndex in roundedWeightLookupIndexPairs:
setattr(m3Vertex, "boneWeight%d" % weightIndex, roundedWeight)
setattr(m3Vertex, "boneLookupIndex%d" % weightIndex, lookupIndex)
weightIndex += 1
isStaticVertex = (len(roundedWeightLookupIndexPairs) == 0)
if isStaticVertex:
staticMeshBoneIndex = self.boneNameToBoneIndexMap.get(staticMeshBoneName)
if staticMeshBoneIndex is None:
staticMeshBoneIndex = self.addBoneWithRestPosAndReturnIndex(model, staticMeshBoneName, realBone=True)
self.createBoneMatricesForStaticMeshBone(staticMeshBoneIndex)
if staticMeshBoneLookupIndex is None:
staticMeshBoneLookupIndex = boneNameToBoneLookupIndexMap.get(staticMeshBoneName)
if staticMeshBoneLookupIndex is None:
self.boneNameToBoneIndexMap[staticMeshBoneName] = staticMeshBoneIndex
staticMeshBoneLookupIndex = len(model.boneLookup) - firstBoneLookupIndex
model.boneLookup.append(staticMeshBoneIndex)
boneNameToBoneLookupIndexMap[staticMeshBoneName] = staticMeshBoneLookupIndex
bone = model.bones[staticMeshBoneIndex]
bone.setNamedBit("flags", "skinned", True)
roundedWeightLookupIndexPairs.append((255, staticMeshBoneLookupIndex))
usedBoneWeightSlots = len(roundedWeightLookupIndexPairs)
if usedBoneWeightSlots > numberOfBoneWeightPairsPerVertex:
numberOfBoneWeightPairsPerVertex = usedBoneWeightSlots
for uvLayerIndex in range(0, uvCoordinatesPerVertex):
m3AttributeName = "uv" + str(uvLayerIndex)
if len(mesh.uv_layers) > uvLayerIndex:
uvData = mesh.uv_layers[uvLayerIndex].data[tri.loops[faceRelativeVertexIndex]]
m3UVCoord = self.convertBlenderToM3UVCoordinates(uvData.uv)
setattr(m3Vertex, m3AttributeName, m3UVCoord)
else:
setattr(m3Vertex, m3AttributeName, self.createM3UVVector(0.0, 0.0))
m3Vertex.normal = self.blenderVector3ToVector3As3Fixed8(blenderVertex.normal)
if signGroup.data[tri.polygon_index].value == 1:
m3Vertex.sign = 1.0
m3Vertex.tangent.x = -tx
m3Vertex.tangent.y = -ty
m3Vertex.tangent.z = -tz
else:
m3Vertex.sign = -1.0
m3Vertex.tangent.x = tx
m3Vertex.tangent.y = ty
m3Vertex.tangent.z = tz
# TODO: unsure if this actually works as intended.. find a model for test
red = 1.0
green = 1.0
blue = 1.0
alpha = 1.0
if exportVertexRGBA:
if vertexColorData is not None:
blenderColor = vertexColorData[tri.loops[faceRelativeVertexIndex]].color
red = blenderColor[0]
green = blenderColor[1]
blue = blenderColor[2]
if vertexAlphaData is not None:
blenderColor = vertexAlphaData[tri.loops[faceRelativeVertexIndex]].color
alpha = (blenderColor[0] + blenderColor[1] + blenderColor[2]) / 3.0
m3Vertex.color = self.createColor(red, green, blue, alpha)
v = m3Vertex
vertexIdList = []
vertexIdList.extend((v.position.x, v.position.y, v.position.z))
vertexIdList.extend((v.boneWeight0, v.boneWeight1, v.boneWeight2, v.boneWeight3))
vertexIdList.extend((v.boneLookupIndex0, v.boneLookupIndex1, v.boneLookupIndex2, v.boneLookupIndex3))
vertexIdList.extend((v.normal.x, v.normal.y, v.normal.z))
if exportVertexRGBA:
vertexIdList.extend((red, green, blue, alpha))
for i in range(uvCoordinatesPerVertex):
uvAttribute = "uv" + str(i)
uvVector = getattr(v, uvAttribute)
vertexIdList.append(uvVector.x)
vertexIdList.append(uvVector.y)
vertexIdTuple = tuple(vertexIdList)
vertexIndex = vertexDataTupleToIndexMap.get(vertexIdTuple)
if vertexIndex is None:
vertexIndex = nextVertexIndex
vertexDataTupleToIndexMap[vertexIdTuple] = vertexIndex
nextVertexIndex += 1
regionVertices.append(m3Vertex)
m3VertexStructureDefinition.validateInstance(m3Vertex, "vertex")
regionFaceVertexIndices.append(vertexIndex)
division.faces.extend(regionFaceVertexIndices)
m3Vertices.extend(regionVertices)
region = self.createInstanceOf("REGN")
region.firstVertexIndex = firstVertexIndexIndex
region.numberOfVertices = len(regionVertices)
region.firstFaceVertexIndexIndex = firstFaceVertexIndexIndex
region.numberOfFaceVertexIndices = len(regionFaceVertexIndices)
region.numberOfBones = len(boneNameToBoneLookupIndexMap)
region.firstBoneLookupIndex = firstBoneLookupIndex
region.numberOfBoneLookupIndices = len(boneNameToBoneLookupIndexMap)
region.rootBoneIndex = model.boneLookup[firstBoneLookupIndex]
region.numberOfBoneWeightPairsPerVertex = numberOfBoneWeightPairsPerVertex
division.regions.append(region)
m3Object = self.createInstanceOf("BAT_")
m3Object.regionIndex = meshIndex
materialReferenceIndex = self.materialNameToNewReferenceIndexMap.get(mesh.m3_material_name)
if materialReferenceIndex is None:
raise ExportError("The mesh %s uses '%s' as material, but no m3 material with that name exist!" % (mesh.name, mesh.m3_material_name))
m3Object.materialReferenceIndex = materialReferenceIndex
division.objects.append(m3Object)
bpy.ops.object.delete()
numberOfBonesToCheckForSkin = 0
for boneIndex, bone in enumerate(model.bones):
if bone.getNamedBit("flags", "skinned"):
numberOfBonesToCheckForSkin = boneIndex + 1
model.numberOfBonesToCheckForSkin = numberOfBonesToCheckForSkin
model.vertices = m3VertexStructureDefinition.instancesToBytes(m3Vertices)
startTime = time.time()
self.initMeshBoundings(model, m3Vertices)
endTime = time.time()
duration = endTime - startTime
print("Mesh boundings animation export took %s seconds" % duration)
def initMeshBoundings(self, model, m3Vertices):
boundingsAnimRef = self.createInstanceOf("BNDSV0AnimationReference")
animHeader = self.createInstanceOf("AnimationReferenceHeader")
animHeader.interpolationType = 0
animHeader.animFlags = 0x0
animHeader.animId = self.boundingAnimId # boudings seem to have always this id
boundingsAnimRef.header = animHeader
self.initBoundingPointsOfExportedBonesList(model, m3Vertices)
defaultBoundingsVector = self.calculateBoundingsVector(model, m3Vertices, self.boneIndexToDefaultAbsoluteMatrixMap)
boundingsAnimRef.initValue = self.createBNDSFromVector(defaultBoundingsVector)
boundingsAnimRef.nullValue = self.createBoundings(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0)
for animationIndex in self.animationIndicesToExport:
animation = self.scene.m3_animations[animationIndex]
print("Calculating mesh boundings for animation %s" % animation.name)
frameToBoneIndexToAbsoluteMatrixMap = self.animationNameToFrameToBoneIndexToAbsoluteMatrixMap[animation.name]
boundingsVectorList = []
frames = self.allFramesOfAnimation(animation)
timeValuesInMS = self.allFramesToMSValues(frames)
for frame in frames:
boneIndexToAbsoluteMatrixMap = frameToBoneIndexToAbsoluteMatrixMap[frame]
b = self.calculateBoundingsVector(model, m3Vertices, boneIndexToAbsoluteMatrixMap)
boundingsVectorList.append(b)
if self.isAnimationExport or self.vectorArrayContainsNotOnly(boundingsVectorList, defaultBoundingsVector):
timeValuesInMS, boundingsVectorList = shared.simplifyVectorAnimationWithInterpolation(timeValuesInMS, boundingsVectorList)
boundingStructures = list(self.createBNDSFromVector(v) for v in boundingsVectorList)
m3AnimBlock = self.createInstanceOf("SDMB")
m3AnimBlock.frames = timeValuesInMS
m3AnimBlock.flags = 0
m3AnimBlock.fend = self.frameToMS(animation.exlusiveEndFrame)
m3AnimBlock.keys = boundingStructures
animIdToAnimDataMap = self.nameToAnimIdToAnimDataMap[animation.name]
animIdToAnimDataMap[self.boundingAnimId] = m3AnimBlock
boundingsAnimRef.header.animFlags = shared.animFlagsForAnimatedProperty
msec = self.createInstanceOf("MSEC")
msec.boundingsAnimation = boundingsAnimRef
model.divisions[0].msec.append(msec)
def createBoneMatricesForStaticMeshBone(self, staticMeshBoneIndex):
self.boneIndexToDefaultAbsoluteMatrixMap[staticMeshBoneIndex] = mathutils.Matrix()
for animationIndex in self.animationIndicesToExport:
animation = self.scene.m3_animations[animationIndex]
frameToBoneIndexToAbsoluteMatrixMap = self.animationNameToFrameToBoneIndexToAbsoluteMatrixMap.get(animation.name)
if frameToBoneIndexToAbsoluteMatrixMap is None:
frameToBoneIndexToAbsoluteMatrixMap = {}
self.animationNameToFrameToBoneIndexToAbsoluteMatrixMap[animation.name] = frameToBoneIndexToAbsoluteMatrixMap
for frame in self.allFramesOfAnimation(animation):
boneIndexToAbsoluteMatrixMap = frameToBoneIndexToAbsoluteMatrixMap.get(frame)
if boneIndexToAbsoluteMatrixMap is None:
boneIndexToAbsoluteMatrixMap = {}
frameToBoneIndexToAbsoluteMatrixMap[frame] = boneIndexToAbsoluteMatrixMap
boneIndexToAbsoluteMatrixMap[staticMeshBoneIndex] = mathutils.Matrix()
def createBNDSFromVector(self, vector):
minX = vector[0]
minY = vector[1]
minZ = vector[2]
maxX = vector[3]
maxY = vector[4]
maxZ = vector[5]
radius = vector[6]
b = self.createInstanceOf("BNDS")
b.minBorder = self.createVector3(minX, minY, minZ)
b.maxBorder = self.createVector3(maxX, maxY, maxZ)
b.radius = radius
return b
def calculateBoundingsVector(self, model, m3Vertices, boneIndexToAbsoluteMatrixMap):
minX2 = float("inf")
minY2 = float("inf")