Batch Conversion Scripts

I have 2 small scripts for batch conversion from M3 to GLTF 2.0 via FBX using Blender and M3Addon and https://github.com/facebookincubator/FBX2glTF for 3D and ImageMagick to convert DDS to JPG. They are hackish and will need editing for binary locations before run, but would you like me to create a pull request? Put them in a batch/ folder? I'll just copy-paste them in the issue for now.

I also have a demo page that shows how to both skin and instance a GLTF 2.0 model for drawing mass quantities of units using THREE.js (1 million units (http://emh.lart.no/publish/csb/million-mutas2.png) at 3 FPS, 20k animated units with simple physics at 144 FPS on RTX 2080 Ti). This one is better kept as separate repository due to usefulness apart from M3 and because of a few dependencies and is not ready for publishing yet, but could be linked to later if you want to. Or people can just find it through the issue since I saw you do not have capacity for taking pull requests at the moment. I will post a link on this issue thread when I push it to github.

Script for batch conversion from FBX to GLTF 2.0. Run with blender -P or just let the other script call it.

batch_convert.py

import bpy
import os
import glob
import sys

print(sys.argv)
path = os.path.realpath(__file__)
#path = bpy.context.space_data.text.filepath

if not path:
    raise Exception("No script path. Run script with blender.exe -P batch_convert.py. Or edit path in script.")
    #raise Exception("Script file is not saved")

path = os.path.dirname(path)

for f in glob.glob(os.path.join(path, 'models\\*.m3')):
    fbxpath = f.replace('.m3', '.fbx')
    if not os.path.exists(fbxpath):
        print("Converting", f, 'to', fbxpath)
        bpy.ops.wm.read_homefile(use_empty=True)
        getattr(bpy.ops.m3,'import')(filepath=f)
        for img in bpy.data.images:
            img.filepath = img.filepath.replace('.dds', '.jpg')
            print("Replaced", img.filepath)
            img.reload()
        bpy.ops.export_scene.fbx(filepath=fbxpath)
    else:
        print("Skipping", f, 'because FBX exists')

Here is the main script, which searches for M3 files specified in $PWD/../../mods and converts them. Edit and use at will. I ran the script under Windows Subsystem for Linux on Windows. Should work on Linux as well if you replace the path to Blender. Also edit path to FBX2glTF-linux-x64 and m3addon.

assimilate.sh

#!/bin/bash

mkdir -p models
cd models

if [ ! -e "m3list.txt" ]; then
  # TODO: replace path below by path to extracted game files
  find $PWD/../../mods -name '*.m3' > m3list.txt
fi

# list of units to search for and convert
(cat << EOF
Marine
Ghost
EOF
) | while read name; do
  #fname=$(find $PWD/../mods -name "$name.m3" | head -1)
  fname=$(grep "/$name"'\.m3$' m3list.txt | head -1)
  echo "$name -> $fname"

  name="$name".m3

  if [ -e "$name" ]; then
    echo "Skipping $name"
    continue
  fi

  echo "Copying m3 file"
  cp -v $fname .
  echo "Converting to XML"
  ../m3addon/m3ToXml.py $name
  xmlname=$name.xml
  basedir=$(echo $fname | sed 's/Assets.*//')
  echo "Copying assets from $basedir"
  strings $xmlname | sed -n '/Assets/s/\s*<imagePath>\(.*\)<\/imagePath>\s*/\1/p' | while read fpath; do
    dpath=$(dirname $fpath)
    mkdir -v -p $dpath
    bname=$(basename $fpath | tr '[:upper:]' '[:lower:]')
    bnameJPG=$(basename $fpath | sed 's/\.dds$/.jpg/')
    source="$basedir/$dpath/$bname"
    if [ ! -e "$source" ]; then
      source=$(echo $source | sed 's/liberty\.sc2mod/core.sc2mod/')
    fi
    target="$dpath/$bnameJPG"
    echo "Copying DDS file $source to $dpath (for Blender texture load only)"
    cp -v $source $dpath/
    echo "Converting $source to $target"
    convert $source $target
  done
  sed -i 's/\.dds/.jpg/' $xmlname
  #../m3addon/xmlToM3.py $xmlname
  blender="/mnt/c/Program Files/Blender Foundation/Blender/blender.exe"
  "$blender" -b -P "../batch_convert.py"
  for fname in *.fbx; do
    glbBase=$(echo $fname | sed 's/\.fbx$//')
    if [ ! -e $glbBase.glb ]; then
      echo "Converting $fname to GLB"
      ../FBX2glTF-linux-x64 -i $fname -b -o $glbBase
    else
      echo "Skipped $fname to GLB because exists"
    fi
  done

done

SC2Mapster / m3addon

Batch Conversion Scripts #8