scripts: flatpak: add basic i386 flatpak script

scripts/flatpak/run.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+echo "Xash3D FWGS installed as Flatpak."
+
+# TODO: detect by libraryfolders.vdf and installed apps
+HALFLIFESTEAMDIR="$HOME/.steam/steam/steamapps/common/Half-Life"
+
+if [ -d "$HALFLIFESTEAMDIR" ]; then
+	echo "Detected Half-Life installation in $HALFLIFESTEAMDIR, using as RoDir"
+	export XASH3D_RODIR=$HALFLIFESTEAMDIR
+fi
+
+XASHDATADIR="$HOME/.xash/"
+
+mkdir -p $XASHDATADIR
+export XASH3D_BASEDIR="$XASHDATADIR"
+echo "Base directory is $XASH3D_BASEDIR"
+
+export XASH3D_EXTRAS_PAK1=/app/share/xash3d/valve/extras.pk3
+exec /app/lib32/xash3d/xash3d "$@"

scripts/flatpak/su.xash.Engine.Compat.i386.yml

@@ -0,0 +1,82 @@
+app-id: su.xash.Engine.Compat.i386
+runtime: org.freedesktop.Platform
+runtime-version: &runtime-version '22.08'
+x-gl-version: &gl-version '1.4'
+x-gl-versions: &gl-versions 22.08;1.4
+sdk: org.freedesktop.Sdk
+command: run.sh
+separate-locales: false
+sdk-extensions:
+  - org.freedesktop.Sdk.Compat.i386
+  - org.freedesktop.Sdk.Extension.toolchain-i386
+
+finish-args:
+  - --share=ipc
+  - --socket=wayland
+  - --socket=x11
+  - --socket=pulseaudio
+  - --share=network
+  - --filesystem=~/.steam:ro
+  - --filesystem=~/.xash:rw
+  - --filesystem=xdg-run/app/com.discordapp.Discord:create
+  - --device=all
+  - --allow=multiarch
+  - --allow=devel
+  - --allow=bluetooth
+
+add-extensions:
+  org.freedesktop.Platform.Compat.i386:
+    directory: lib/i386-linux-gnu
+    version: *runtime-version
+
+  org.freedesktop.Platform.Compat.i386.Debug:
+    directory: lib/debug/lib/i386-linux-gnu
+    version: *runtime-version
+    no-autodownload: true
+
+  org.freedesktop.Platform.GL32:
+    directory: lib/i386-linux-gnu/GL
+    version: *gl-version
+    versions: *gl-versions
+    subdirectories: true
+    autodelete: false
+    add-ld-path: lib
+    merge-dirs: vulkan/icd.d;glvnd/egl_vendor.d;OpenCL/vendors;lib/dri;lib/d3d;vulkan/explicit_layer.d;vulkan/implicit_layer.d
+    download-if: active-gl-driver
+    enable-if: active-gl-driver
+
+x-compat-i386-opts: &compat-i386-opts
+  prepend-pkg-config-path: /app/lib32/pkgconfig:/usr/lib/i386-linux-gnu/pkgconfig
+  ldflags: -L/app/lib32
+  prepend-path: /usr/lib/sdk/toolchain-i386/bin
+  env:
+    CC: i686-unknown-linux-gnu-gcc
+    CXX: i686-unknown-linux-gnu-g++
+  libdir: /app/lib32
+
+modules:
+  - name: bundle-setup
+    buildsystem: simple
+    build-commands:
+      - |
+        mkdir -p /app/lib/i386-linux-gnu
+        mkdir -p /app/lib/debug/lib/i386-linux-gnu
+        mkdir -p /app/lib/i386-linux-gnu/GL
+        install -Dm644 ld.so.conf /app/etc/ld.so.conf
+    sources:
+      - type: file
+        dest-filename: ld.so.conf
+        url: data:/app/lib32%0A/app/lib/i386-linux-gnu%0A
+  - name: xash
+    buildsystem: simple
+    build-options: *compat-i386-opts
+    build-commands:
+      - |
+        python waf configure -T release --enable-all-renderers --enable-packaging --prefix=/app --libdir=/app/lib32
+        python waf build
+        python waf install --destdir=/
+        mkdir -p /app/bin
+        install -m 0755 scripts/flatpak/run.sh /app/bin/run.sh
+    sources:
+    - type: dir
+      path: ../../