Help with .py export addon

Coding Python Support
1

Hello everyone,

I’m new to this forum, and new to python/blender in general, so go easy on me :slight_smile:

Basically I play this dead online game that the source to was released to public in my free time, and I was able to get the header files of their 3D model extensions.

So I wrote a script that exports and imports these 3D model extensions into blender successfully, and I was able to create my own custom models and etc.

However… I recently stepped upon a problem that I cannot seem to figure out.

The UV of the model that I work on is fine… but once I export it to the new extension for some reason it completely messes it up. This only happens with SOME models… not all.

Here’s a picture to help understand more:

BEFORE EXPORTING

VUoXXhEQQ2mJJaMw0aHaDA.png1670×545 152 KB

AFTER EXPORTING

QJwl77RQRAOF1rH-uo6MjQ.png1658×499 112 KB

NOTE: Again… this only happens with some models… not all.

Maybe a new set of fresh eyes can see what I can’t seem to be seeing.

export.py

bl_info = { “name”: “OBJ format”,
“blender”: (2, 5, 8),
“api”: 35622,
“location”: “File > Export”,
“description”: (“Export models with vertgroups.”),
“warning”: “”,
“wiki_url”: “”,
“tracker_url”: “”,
“category”: “Import-Export”}

import bpy
import mathutils
import math
from string import *
from struct import *
from math import *
from bpy.props import *

def objexport(path):
obj = bpy.context.scene.objects.active
if obj.type != ‘MESH’:
raise(IOError, ‘You must select the mesh’)
else:
meshname = ‘’
groupnames =
vertgroups =
verts =
normals =
uv =
faces = 

    meshname = obj.name
    mesh = obj.data
    tex = mesh.uv_layers.active
    
    for vert in obj.data.vertices:
        verts.append(vert.co.xzy)
        uv.append([])
        groups = []
        for group in vert.groups:
            groups.append(group.group)
        vertgroups.append(groups)
    
    for face in mesh.polygons:
        faces.append(face.vertices)
        normals.append(mesh.vertices[face.vertices[0]].normal)
    
    for i, texface in enumerate(tex.data):
            uv[faces[math.floor(i/3)][i%3]] = texface
    
    for group in obj.vertex_groups:
        groupnames.append(group.name)
    
    lines = []
    
    lines.append('#SROBJ Blender plugin.'+'

')
lines.append('o ‘+meshname+’
')

    for groupname in groupnames:
        lines.append('gn '+groupname+'

')

    for groups in vertgroups:
        if len(groups) == 1:
            groups.append(255)
            
        lines.append('vg '+str(groups[0])+'/'+str(groups[1])+'

')

    for vert in verts:
        lines.append('v '+str(vert[0])+' '+str(vert[1])+' '+str(vert[2]*-1)+'

')

    for norm in normals:
        lines.append('vn '+str(norm[0])+' '+str(norm[2])+' '+str(norm[1])+'

')

    for coords in uv:
        lines.append('vt '+str(coords.uv[0])+' '+str(coords.uv[1])+'

')

    for i, face in enumerate(faces):
        lines.append('f '+str(face[0]+1)+'/'+str(face[0]+1)+'/'+str(i+1)+' '+str(face[1]+1)+'/'+str(face[1]+1)+'/'+str(i+1)+' '+str(face[2]+1)+'/'+str(face[2]+1)+'/'+str(i+1)+'

')

    f = open(path, 'w')
    f.writelines(lines)
    f.close()

def getInputFilename(self,filename):
checktype = filename.split(‘\’)[-1][-6:]
print (“------------”,filename)
if checktype.lower() != ‘.srobj’:
objexport(filename+‘.srobj’)
#self.report({‘INFO’}, (“Selected file:”+ filename))
else:
objexport(filename)

class EXPORT_OT_psk(bpy.types.Operator):
‘’‘Load a skeleton mesh psk File’‘’
bl_idname = “export_scene.srobj”
bl_label = “Export SROBJ”
bl_space_type = “PROPERTIES”
bl_region_type = “WINDOW”

# List of operator properties, the attributes will be assigned
# to the class instance from the operator settings before calling.
filepath = StringProperty(
        name="File Path",
        description="Filepath used for importing the srobj file",
        maxlen= 1024,
        subtype='FILE_PATH',
        )


def execute(self, context):
    getInputFilename(self,self.filepath)
    return {'FINISHED'}


def invoke(self, context, event):
    wm = context.window_manager
    wm.fileselect_add(self)
    return {'RUNNING_MODAL'}

def menu_func(self, context):
self.layout.operator(EXPORT_OT_psk.bl_idname, text=“Object (.srobj)”)

def register():
bpy.utils.register_module(name)
bpy.types.INFO_MT_file_export.append(menu_func)

def unregister():
bpy.utils.unregister_module(name)
bpy.types.INFO_MT_file_export.remove(menu_func)

if name == “main”:
register()

Any help is appreciated :slight_smile: