#!/usr/bin/env bash
# Launch the built DOS example in DOSBox. Defaults to PATTERN.
#
#   scripts/run-dos.sh           # runs PATTERN
#   scripts/run-dos.sh hello     # runs HELLO
#   scripts/run-dos.sh keys      # runs KEYS

set -euo pipefail

prog=${1:-pattern}
repo=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
bin_dir=$repo/build/dos/bin

case $prog in
    hello)   file=HELLO.EXE ;;
    pattern) file=PATTERN.EXE ;;
    keys)    file=KEYS.EXE ;;
    joy)     file=JOY.EXE ;;
    sprite)  file=SPRITE.EXE ;;
    audio)   file=AUDIO.EXE ;;
    *) echo "usage: $0 [hello|pattern|keys|joy|sprite|audio]" >&2; exit 2 ;;
esac

if [[ ! -f "$bin_dir/$file" ]]; then
    echo "$bin_dir/$file not built. Run 'make dos' first." >&2
    exit 1
fi

# mouse_capture=seamless is required for DOSBox-Staging when running
# inside a VM whose host already manages the pointer; without it the
# default capture-on-click behavior fights the VM's grab and mouse
# input is unusable. On plain DOSBox this -set flag is unknown and is
# logged once as a warning, then ignored -- harmless either way.
exec dosbox \
    -set "mouse_capture=seamless" \
    -c "C:" \
    -c "$file" \
    -c "pause" \
    --exit "$bin_dir"