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MSH scene reading draft, no blender conversion yet

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This commit is contained in:
William Herald Snyder
2020-10-20 14:28:53 -04:00
parent 1892a1cdbd
commit 152b22feb9
4 changed files with 474 additions and 1 deletions
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addons/io_scene_swbf_msh/msh_scene_read.py Normal file
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""" Contains functions for saving a Scene to a .msh file. """
from itertools import islice
from typing import Dict
from .msh_scene import Scene
from .msh_model import *
from .msh_material import *
from .msh_reader import Reader
from .msh_utilities import *
from .crc import *
def read_scene(input_file) -> Scene:
scene = Scene()
scene.models = []
with Reader(file=input_file, chunk_id="HEDR") as hedr:
with hedr.read_child("MSH2") as msh2:
with msh2.read_child("SINF") as sinf:
pass
materials_list: List[str] = []
with msh2.read_child("MATL") as matl:
materials_list = _read_matl_and_get_materials_list(matl)
while ("MODL" in msh2.peak_next_header()):
with msh2.read_child("MODL") as modl:
scene.models.append(_read_modl(modl, materials_list))
mats_dict = {}
for i,mat in enumerate(materials_list):
mats_dict["Material" + str(i)] = mat
scene.materials = mats_dict
#with hedr.read_child("ANM2") as anm2: #simple for now
# for anim in scene.anims:
# _write_anm2(anm2, anim)
#with hedr.read_child("CL1L"):
# pass
return scene
def _read_matl_and_get_materials_list(matl: Reader) -> List[str]:
materials_list: List[str] = []
num_mats = matl.read_u32()
for _ in range(num_mats):
with matl.read_child("MATD") as matd:
materials_list.append(_read_matd(matd))
return materials_list
def _read_matd(matd: Reader) -> Material:
mat = Material()
while matd.could_have_child():
next_header = matd.peak_next_header()
if "NAME" in next_header:
with matd.read_child("NAME") as name:
mat.name = name.read_string()
print(matd.indent + "Got a new material: " + mat.name)
elif "DATA" in next_header:
with matd.read_child("DATA") as data:
data.read_f32(4) # Diffuse Color (Seams to get ignored by modelmunge)
mat.specular_color = data.read_f32(4)
data.read_f32(4) # Ambient Color (Seams to get ignored by modelmunge and Zero(?))
data.read_f32() # Specular Exponent/Decay (Gets ignored by RedEngine in SWBFII for all known materials)
elif "ATRB" in next_header:
with matd.read_child("ATRB") as atrb:
mat.flags = atrb.read_u8()
mat.rendertype = atrb.read_u8()
mat.data = atrb.read_u8(2)
elif "TX0D" in next_header:
with matd.read_child("TX0D") as tx0d:
mat.texture0 = tx0d.read_string()
elif "TX1D" in next_header:
with matd.read_child("TX1D") as tx1d:
mat.texture1 = tx1d.read_string()
elif "TX2D" in next_header:
with matd.read_child("TX2D") as tx2d:
mat.texture2 = tx2d.read_string()
elif "TX3D" in next_header:
with matd.read_child("TX3D") as tx3d:
mat.texture3 = tx3d.read_string()
else:
matd.skip_bytes(4)
return mat
def _read_modl(modl: Reader, materials_list: List[str]) -> Model:
model = Model()
while modl.could_have_child():
next_header = modl.peak_next_header()
if "MTYP" in next_header:
with modl.read_child("MTYP") as mtyp:
model.model_type = mtyp.read_u32()
elif "MNDX" in next_header:
with modl.read_child("MNDX") as mndx:
pass
elif "NAME" in next_header:
with modl.read_child("NAME") as name:
model.name = name.read_string()
print(modl.indent + "New model: " + model.name)
elif "PRNT" in next_header:
with modl.read_child("PRNT") as prnt:
model.parent = prnt.read_string()
elif "FLGS" in next_header:
with modl.read_child("FLGS") as flgs:
model.hidden = flgs.read_u32()
elif "TRAN" in next_header:
with modl.read_child("TRAN") as tran:
model.transform = _read_tran(tran)
elif "GEOM" in next_header:
model.geometry = []
with modl.read_child("GEOM") as geom:
next_header_modl = geom.peak_next_header()
if "SEGM" in next_header_modl:
with geom.read_child("SEGM") as segm:
model.geometry.append(_read_segm(segm, materials_list))
'''
if model.model_type == ModelType.SKIN:
with modl.read_child("ENVL") as envl:
envl.write_u32(len(scene.models))
for i in range(len(scene.models)):
envl.write_u32(i)
'''
elif "SWCI" in next_header:
prim = CollisionPrimitive()
with modl.read_child("SWCI") as swci:
prim.shape.value = swci.read_u32()
prim.radius = swci.read_f32()
prim.height = swci.read_f32()
prim.length = swci.read_f32()
model.collisionprimitive = prim
else:
with modl.read_child("NULL") as unknown:
pass
def _read_tran(tran: Reader) -> ModelTransform:
xform = ModelTransform()
tran.skip_bytes(4 * 3) #ignore scale
xform.rotation = Quaternion(tran.read_f32(4))
xform.position = Vector(tran.read_f32(3))
return xform
def _read_segm(segm: Reader, materials_list: List[str]) -> GeometrySegment:
geometry_seg = GeometrySegment()
while segm.could_have_child():
next_header = segm.peak_next_header()
if "MATI" in next_header:
with segm.read_child("MATI") as mati:
geometry_seg.material_name = materials_list[mati.read_u32()]
elif "POSL" in next_header:
with segm.read_child("POSL") as posl:
num_positions = posl.read_u32()
for _ in range(num_positions):
geometry_seg.positions.append(Vector(posl.read_f32(3)))
elif "NRML" in next_header:
with segm.read_child("NRML") as nrml:
num_normals = nrml.read_u32()
for _ in range(num_positions):
geometry_seg.normals.append(Vector(nrml.read_f32(3)))
elif "WGHT" in next_header:
geometry_seg.weights = []
with segm.read_child("WGHT") as wght:
num_boneweights = wght.read_u32()
for _ in range(num_boneweights):
geometry_seg.weights.append((wght.read_u32(), wght.read_f32()))
elif "CLRL" in next_header:
geometry_seg.colors = []
with segm.read_child("CLRL") as clrl:
num_colors = clrl.read_u32()
for _ in range(num_colors):
geometry_seg.colors += unpack_color(clrl.read_u32())
elif "UV0L" in next_header:
with segm.read_child("UV0L") as uv0l:
num_texcoords = uv0l.read_u32()
for _ in range(num_texcoords):
geometry_seg.texcoords.append(Vector(uv0l.read_f32(2)))
elif "NDXL" in next_header:
with segm.read_child("NDXL") as ndxl:
num_polygons = ndxl.read_u32()
for _ in range(num_polygons):
polygon = ndxl.read_u16(ndxl.read_u16())
geometry_seg.polygons.append(polygon)
elif "NDXT" in next_header:
with segm.read_child("NDXT") as ndxt:
num_tris = ndxt.read_u32()
for _ in range(num_tris):
geometry_seg.triangles.append(ndxt.read_u16(3))
elif "STRP" in next_header:
with segm.read_child("STRP") as strp:
pass
if segm.read_u16 != 0: #trailing 0 bug
segm.skip_bytes(-2)
else:
with segm.read_child("NULL") as unknown:
pass
return geometry_seg
'''
def _write_anm2(anm2: Writer, anim: Animation):
with anm2.read_child("CYCL") as cycl:
cycl.write_u32(1)
cycl.write_string(anim.name)
for _ in range(63 - len(anim.name)):
cycl.write_u8(0)
cycl.write_f32(10.0) #test framerate
cycl.write_u32(0) #what does play style refer to?
cycl.write_u32(0, 20) #first frame indices
with anm2.read_child("KFR3") as kfr3:
kfr3.write_u32(len(anim.bone_transforms.keys()))
for boneName in anim.bone_transforms.keys():
kfr3.write_u32(crc(boneName))
kfr3.write_u32(0) #what is keyframe type?
kfr3.write_u32(21, 21) #basic testing
for i, xform in enumerate(anim.bone_transforms[boneName]):
kfr3.write_u32(i)
kfr3.write_f32(xform.translation.x, xform.translation.y, xform.translation.z)
for i, xform in enumerate(anim.bone_transforms[boneName]):
kfr3.write_u32(i)
kfr3.write_f32(xform.rotation.x, xform.rotation.y, xform.rotation.z, xform.rotation.w)
'''