#!/usr/bin/env bash
# Do ptloop01/02 ANIMATE on the settled main menu?
#
# sylpheed-port pinned a leaf phase for these and was explicit that doing so
# picks ONE pose rather than the one the game shows -- "a capture question, not a
# harness one". On the JP title, two captures from different sessions are
# byte-identical over the ptloop rect (0 of 18 000), so they do not free-run
# there. The menu is a different bundle and is where their row actually drifted.
#
# If the loops animate at all, consecutive frames of a SETTLED menu differ over
# their rect. A whole-frame count runs alongside as the contrast control: if the
# frame is entirely static the instrument cannot see motion and the zero is void.
#
# Usage: menu_loop_rest.sh OUTDIR
set -u
export HOME=/sylph-home/re SDL_AUDIODRIVER=dummy DISPLAY=:98
SD="$(cd "$(dirname "$0")" && pwd)"
OUT="${1:-/sylph-home/re/menuloop}"; mkdir -p "$OUT"
alive(){ ps -o pid=,stat= -C xenia_canary 2>/dev/null | awk '$2 !~ /^Z/ {print $1}'; }
shot(){ screenshot "$1" >/dev/null 2>&1; }
screen(){ shot /tmp/mlr.png; python3 "$SD/screen_id.py" /tmp/mlr.png | awk '{print $1}'; }

ps -o pid= -C xenia_canary | xargs -r kill -9
( cd "$OUT" && nohup run-canary --mem_watch=false \
    --logged_profile_slot_0_xuid=B13EBABEBABEBABE \
    >"$OUT/canary.stdout" 2>"$OUT/canary.stderr" & )
sleep 8
deadline=$(( SECONDS + 900 )); s=""
while [ $SECONDS -lt $deadline ]; do
  s="$(screen)"; echo "t=${SECONDS}s $s"; [ "$s" = "title" ] && break; sleep 4
done
[ "$s" = "title" ] || { echo "NEVER REACHED THE TITLE"; exit 1; }
python3 "$SD/pad.py" tap A 0.5
for _ in 1 2 3 4 5 6; do sleep 4; s="$(screen)"; echo "  after A: $s"; [ "$s" = "menu" ] && break; done
[ "$s" = "menu" ] || { echo "NO MENU (screen=$s)"; exit 2; }
sleep 6                       # let the menu settle past its build-in
for i in 0 1 2 3 4; do shot "$OUT/menu-$i.png"; sleep 2; done
python3 - "$OUT" <<'PY'
import sys, numpy as np
from PIL import Image
out=sys.argv[1]
def load(i):
    a=np.asarray(Image.open(f"{out}/menu-{i}.png").convert("RGB"),dtype=int)
    return a, (45 if a.shape[0]>=716 else 0)
a0,o0=load(0)
print("\nptloop01/02 rect, 200x90 at design (441,270) -- do they move?")
for i in (1,2,3,4):
    ai,oi=load(i)
    la=a0[o0+270:o0+360, 441:641]; lb=ai[oi+270:oi+360, 441:641]
    d=np.abs(la-lb)
    h=min(a0.shape[0]-o0, ai.shape[0]-oi); w=min(a0.shape[1], ai.shape[1])
    dw=np.abs(a0[o0:o0+h,:w]-ai[oi:oi+h,:w]).sum(axis=2)
    print(f"  frame {i} vs 0: loop rect {int((d.sum(axis=2)>0).sum()):6d}/18000 px  max |d| {int(d.max()):3d}"
          f"   | CONTRAST whole frame {int((dw>0).sum()):7d} px")
PY
echo "MENU LOOP PROBE DONE"