#!/usr/bin/env bash
# Wait until the game is actually FLYING, then return — do not guess with sleeps.
#
# `launch_mission.sh` used to allow a fixed 75 s for the launch cinematic, the
# stage load and the objective card. Under lavapipe that is not a constant: one
# run needed 75 s, the next was still in Raymond's dialogue at 140 s, so the A
# meant for the OBJECTIVE card was swallowed by the cutscene and the card sat
# there forever.
#
# The in-flight HUD is unmistakable: the SHIELD bar is a solid bright green
# block at the bottom of the screen, and no cutscene or menu has anything green
# there. So poll that pixel, and tap A every few seconds until it appears (which
# dismisses the objective card whenever it happens to be up).
#
# Same liveness rule as skip_intro.sh, for the same reason: a failed screenshot
# leaves r/g/b unset, they default to 0, the green test fails, and waiting for
# the HUD becomes indistinguishable from waiting for a dead emulator.
set -u
export HOME=/sylph-home/re
DISP="${DISPLAY:-:98}"
alive(){ ps -o pid=,stat= -C xenia_canary 2>/dev/null | awk '$2 !~ /^Z/ {print $1}'; }
DEADLINE=$(( SECONDS + ${1:-240} ))
PX=450; PY=640            # inside the SHIELD bar of the flight HUD
last_tap=0
while [ $SECONDS -lt $DEADLINE ]; do
  rm -f /tmp/wf.png
  if ! screenshot /tmp/wf.png >/dev/null 2>&1 || [ ! -s /tmp/wf.png ]; then
    xdpyinfo -display "$DISP" >/dev/null 2>&1 \
      || { echo "DISPLAY LOST at ${SECONDS}s"; exit 3; }
    sleep 2; continue
  fi
  [ -n "$(alive)" ] || { echo "EMULATOR GONE at ${SECONDS}s"; exit 4; }
  read -r r g b < <(convert /tmp/wf.png -format \
    "%[fx:int(255*p{$PX,$PY}.r)] %[fx:int(255*p{$PX,$PY}.g)] %[fx:int(255*p{$PX,$PY}.b)]" info:)
  if [ "${g:-0}" -gt 140 ] && [ $(( g - r )) -gt 60 ] && [ $(( g - b )) -gt 60 ]; then
    echo "IN FLIGHT at ${SECONDS}s (HUD shield bar visible)"
    exit 0
  fi
  if [ $(( SECONDS - last_tap )) -ge 6 ]; then
    vgamepad tap A 250
    last_tap=$SECONDS
  fi
  sleep 2
done
echo "NO FLIGHT HUD within ${1:-240}s"; exit 1