asgard-run

#!/usr/bin/env bash

set -e

GAME_NAME=$1
ROOT_DIR="$(cd "$(dirname "$0")" && pwd)"
GAMES_DIR="$ROOT_DIR/games"

# Defaults (can be overridden by per-game asgard.cfg)
GAMESCOPE_WIDTH=${GAMESCOPE_WIDTH:-1280}
GAMESCOPE_HEIGHT=${GAMESCOPE_HEIGHT:-1024}
USE_GAMESCOPE=${USE_GAMESCOPE:-1}
USE_PADSP=${USE_PADSP:-1}
SOFTWARE_GL=${SOFTWARE_GL:-1}
MESA_YEAR=${MESA_YEAR:-}
SAVE_DIRS=()  # Array of "host_dir:container_dir" pairs
LAUNCH_CMD=""  # Custom launch command (default: ./<game> or ./<game>.sh)
PRE_LAUNCH=""  # Commands to run inside the container before launching the game
USE_STRACE=${USE_STRACE:-1}  # Workaround for games with init race conditions
GAMESCOPE_ARGS=""  # Extra gamescope arguments
HOST_WRAPPER=""  # Command to wrap the docker run (e.g. "pasuspender --" to free /dev/dsp)
EXTRA_ENV=""  # Extra environment variable to pass into container (KEY=VALUE)

# Source per-game config if it exists
if [[ -f "$ROOT_DIR/config/$GAME_NAME.cfg" ]]; then
    source "$ROOT_DIR/config/$GAME_NAME.cfg"
fi

DOCKER_EXTRA_ARGS=()
if [[ "$SOFTWARE_GL" == "1" ]]; then
    DOCKER_EXTRA_ARGS+=(-e LIBGL_ALWAYS_SOFTWARE=1)
fi
if [[ -n "$MESA_YEAR" ]]; then
    DOCKER_EXTRA_ARGS+=(-e "MESA_EXTENSION_MAX_YEAR=$MESA_YEAR")
fi
for save_dir in "${SAVE_DIRS[@]}"; do
    host_dir="${save_dir%%:*}"
    container_dir="${save_dir#*:}"
    mkdir -p "$host_dir"
    DOCKER_EXTRA_ARGS+=(-v "$host_dir:$container_dir:rw")
done

# Pass /dev/dsp if available (OSS emulation via snd-pcm-oss kernel module)
# Note: --privileged exposes all /dev/dsp* devices; use SDL_PATH_DSP env var to select one
if [[ -e /dev/dsp ]]; then
    DOCKER_EXTRA_ARGS+=(--device /dev/dsp)
fi

if [[ -n "$EXTRA_ENV" ]]; then
    DOCKER_EXTRA_ARGS+=(-e "$EXTRA_ENV")
fi

xhost +local:docker > /dev/null 2>&1

GAMESCOPE_CMD=""
if [[ "$USE_GAMESCOPE" == "1" ]]; then
    GAMESCOPE_CMD="gamescope -w $GAMESCOPE_WIDTH -h $GAMESCOPE_HEIGHT $GAMESCOPE_ARGS --"
fi

uid=$(id -u)
$GAMESCOPE_CMD $HOST_WRAPPER docker run \
    --rm \
    -e DISPLAY=$DISPLAY \
    --privileged \
    --network host \
    --device /dev/snd \
    --device /dev/dri \
    --group-add=audio \
    -v /etc/machine-id:/etc/machine-id \
    -v /var/lib/dbus:/var/lib/dbus \
    -e PULSE_SERVER=unix:${XDG_RUNTIME_DIR}/pulse/native \
    -v ${XDG_RUNTIME_DIR}/pulse/native:${XDG_RUNTIME_DIR}/pulse/native \
    -v ${HOME}/.config/pulse/cookie:/home/loki/.config/pulse/cookie:ro \
    --group-add $(getent group audio | cut -d: -f3) \
    -v "${HOME}/.Xauthority:/home/loki/.Xauthority:rw" \
    -v "${HOME}/.loki:/home/loki/.loki:rw" \
    -v "/tmp/.X11-unix:/tmp/.X11-unix:rw" \
    -v "${XDG_RUNTIME_DIR}:/run/loki/$uid:rw" \
    -v "/media/cdrom:/cdrom" \
    --env=DISPLAY \
    --env=XDG_RUNTIME_DIR=/run/user/$uid \
    "${DOCKER_EXTRA_ARGS[@]}" \
    -e GAME_NAME="$GAME_NAME" \
    -e LAUNCH_CMD="$LAUNCH_CMD" \
    -e PRE_LAUNCH="$PRE_LAUNCH" \
    -e USE_STRACE="$USE_STRACE" \
    -e USE_PADSP="$USE_PADSP" \
    $GAME_NAME \
    bash -c 'cd /home/loki/game && export LD_LIBRARY_PATH=./lib:$LD_LIBRARY_PATH && [ -n "$PRE_LAUNCH" ] && eval "$PRE_LAUNCH"; STRACE="" && [ "$USE_STRACE" = "1" ] && STRACE="strace -e trace=none -o /dev/null -f"; PADSP="" && [ "$USE_PADSP" = "1" ] && PADSP="padsp"; if [ -n "$LAUNCH_CMD" ]; then $STRACE $PADSP $LAUNCH_CMD; elif [ -e "${GAME_NAME}.sh" ]; then $STRACE $PADSP ./${GAME_NAME}.sh; else $STRACE $PADSP ./${GAME_NAME}; fi'