#!/usr/bin/env bash
# A/B/C physics probe: runs probe/probe.tscn headless under each backend by
# switching physics/3d/physics_engine through override.cfg.
set -euo pipefail
cd "$(dirname "$0")"

GODOT="${GODOT_BIN:-/Applications/Godot.app/Contents/MacOS/Godot}"
ENGINES=("GodotPhysics3D" "Jolt Physics" "Box3D Physics (Extension)")

mkdir -p probe/results
"$GODOT" --headless --path . --import > /dev/null 2>&1 || true

for e in "${ENGINES[@]}"; do
  printf '[physics]\n3d/physics_engine="%s"\n' "$e" > override.cfg
  slug=$(echo "$e" | tr ' ()' '_' | tr -s '_')
  echo "=== $e ==="
  "$GODOT" --headless --path . res://probe/probe.tscn 2>/dev/null \
    | grep '^PROBE' | tee "probe/results/$slug.txt"
done
rm -f override.cfg