downBGE

downBGE is a fork of the Blender Game Engine, slimmed down for retro hardware.

Currently, downBGE runs on PC and Nintendo Wii.

Prerequisites

• downBGE source
• Stackless Python 2.7
• For editor:
  • downBGE addons
• For Wii runtime:
  • devkitPPC for Wii
  • GNU/Linux PowerPC toolchain and qemu-ppc-static (temporary requirement until cross-build endianness issues are sorted out)
  • Stackless Python 2.7 port
  • Fixed OpenGX

Building for PC

downBGE is intended to be built with SCons running on Python 2.7.

Building for Wii

Build Stackless Python port for Wii

$ git clone https://github.com/I-asked/stackless.git -b v2.7.18-slp-porting stackless-porting
$ cd stackless-porting/
$ echo -e 'ac_cv_file__dev_ptmx=no\nac_cv_file__dev_ptc=no' >config.site
$ export CONFIG_SITE=config.site
$ ./configure --build=x86_64-linux-gnu --host=powerpc-eabi --prefix=$PWD/_install/wii/ \
              --disable-ipv6 --enable-optimizations --disable-shared --without-pymalloc \
              --without-signal-module --with-threads \
              CC=$DEVKITPPC/bin/powerpc-eabi-gcc
$ make -j$(nproc) install
$ cd -

Build “fixed” OpenGX for Wii

$ git clone https://github.com/I-asked/opengx.git opengx-jula
$ cd opengx-jula/
$ cmake -S. -Bbuild -DCMAKE_TOOLCHAIN_FILE="$DEVKITPRO/cmake/Wii.cmake"
$ cmake --build build -j
$ sudo cmake --install build
$ cd -

Build the PowerPC Linux Cross Toolchain

Build the downBGE runtime (blenderplayer)

$ cd downbge/
$ python2 -m virtualenv .virtualenv
$ . .virtualenv/bin/activate
$ pip install scons
$ scons -Qj$(nproc) \
        BF_PYTHON=$PWD/../stackless-porting/_install/wii \
        BF_CROSS=wii \
        blenderlite