joeylib2/scripts/verify-atarist-joy.sh

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#!/usr/bin/env bash
# Part of JoeyLib, Copyright (c) 2026 Scott Duensing, under the MIT License.
# See LICENSE.md for license information.
# SPDX-License-Identifier: MIT
#
# verify-atarist-joy.sh - Joystick gate for the Atari ST and STe builds:
# both ports, every direction, the fire button held (button 1: the core
# makes a held press of a one-button stick button 1, a tap button 0) and
# every release, driven through Hatari's keyboard joysticks and read back
# from what examples/joy draws.
#
# The port (src/atarist/input.c) decodes the IKBD's joystick packets: port 1,
# the dedicated stick port, is JL_JOYSTICK_0 (stick A) and port 0, the mouse
# port, JL_JOYSTICK_1 (stick B); one fire button each, both always connected.
# The port keeps TOS's IKBD mode, in which port 0 is the mouse's: the IKBD
# reports no stick there, so B must stay at rest whatever is held on it, and
# port 1's fire, the same line as the mouse's right button, arrives as that
# button.
# The STe build on an STe also reads Jaguar pads in the enhanced ports: pad
# A is stick A whenever it was used more recently than port 1's stick, pad B
# is stick B, and a pad's A and B are buttons 0 and 1 (no tap or hold). So
# there the gate drives Hatari's two emulated joypads too, each direction
# and button, then port 1's stick again (it takes stick A back), and both
# pads at once. A Mega STe has no enhanced ports, so not there. Hatari 2.4's
# keyboard joypads have only the A button, so the joypads ([Joystick2] A,
# [Joystick3] B) are real-joystick ones on two virtual gamepads
# (scripts/lib/padGate.sh): a pad's SDL button 0 is its A, 1 its B.
# Hatari's [Joystick0] and [Joystick1] (a config file of the gate's own) are
# keyboard joysticks on host keys, which xdotool holds on a private Xvfb
# display; Hatari's own screenshots (its command FIFO's screenshot shortcut)
# go through tests/gate/joyScreen.c (scripts/lib/joyGate.sh). Escape must
# then end JOY.
#
# Usage: scripts/verify-atarist-joy.sh [atarist|ste] [MACHINE]
# (default atarist on an st; ste on an ste)
# Env: JOY_SHOTS also keep the screenshots in this folder
# Requires: Hatari, EmuTOS, Xvfb, xdotool;
# build/<build>/bin/JOY.PRG (make atarist / make ste).
set -uo pipefail
repo=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
source "$repo/scripts/lib/joeyEnv.sh"
source "$repo/scripts/lib/joyGate.sh"
source "$repo/scripts/lib/padGate.sh"
joeyNeed HATARI hatari
joeyNeed EMUTOS_IMG emutos
build="${1:-atarist}"
# The ST build writes 3-bit colours on any machine (joyScreen --st).
case "$build" in
atarist) machine="${2:-st}"; JOY_SCREEN_ARGS=(--st) ;;
ste) machine="${2:-ste}" ;;
*) echo "verify-atarist-joy: build must be atarist or ste" >&2; exit 2 ;;
esac
JOY_LABEL="verify-$build-joy"
program="$repo/build/$build/bin/JOY.PRG"
wall=300 # hard cap on Hatari, whatever happens to this script
readySeconds=90 # EmuTOS booting and JOY drawing
shotSeconds=5 # the screenshot shortcut until Hatari has written the file
exitSeconds=10 # Escape until JOY's screen is gone
[ -f "$program" ] || { echo "$JOY_LABEL: build JOY.PRG first (make $build)" >&2; exit 2; }
JOY_WORK=$(mktemp -d -t joeylib-st-joy.XXXXXX)
guard=""
hatari=""
xvfb=""
display=""
win=""
cleanup() {
joeyStop "$hatari" "$guard" "$xvfb" 2> /dev/null
padStop
rm -rf "$JOY_WORK"
}
trap cleanup EXIT
# Control, its host key (xdotool's name) and Hatari's name for the key.
# Hatari's Joystick1 is ST port 1 (stick A), Joystick0 port 0 (stick B).
keys=(
"A-left j J" "A-right l L" "A-up i I" "A-down k K" "A-button0 a A"
"B-left f F" "B-right h H" "B-up t T" "B-down g G" "B-button0 q Q"
)
# Whether this run has the STe's enhanced ports, and what their pads do.
stePads=0
[ "$build" = ste ] && [ "$machine" = ste ] && stePads=1
PAD_STEPS=(
"pad A left|PA-left|1-000|REST" "pad A up-right|PA-right PA-up|1+-00|REST"
"pad A button A|PA-button0|10010|REST" "pad A button B|PA-button1|10001|REST"
"pad A both buttons|PA-button0 PA-button1|10011|REST"
"port 1 again, button held: button 1|A-button0|10001|REST"
"pad B down-left|PB-left PB-down|REST|1-+00"
"pad B button A|PB-button0|REST|10010" "pad B button B|PB-button1|REST|10001"
"pad A right+B, pad B up+A|PA-right PA-button1 PB-up PB-button0|1+001|10-10"
)
# key CONTROL -- the host key for a control.
key() {
local entry
local control
local host
for entry in "${keys[@]}"; do
read -r control host _ <<< "$entry"
if [ "$control" = "$1" ]; then
printf '%s\n' "$host"
return 0
fi
done
return 1
}
# hatariKey CONTROL -- Hatari's name for the control's key.
hatariKey() {
local entry
local control
local name
for entry in "${keys[@]}"; do
read -r control _ name <<< "$entry"
if [ "$control" = "$1" ]; then
printf '%s\n' "$name"
return 0
fi
done
return 1
}
# hold keydown|keyup CONTROL... -- a stick's control is a key; a pad's
# (PA-..., PB-...) goes to that virtual gamepad.
hold() {
local action="$1"
local control
local host
shift
for control in "$@"; do
case "$control" in
PA-*|PB-*)
padSend "$([ "$action" = keydown ] && echo press || echo release)" "${control:1:1}-${control#P?-}"
continue
;;
esac
host=$(key "$control") || { joyFail "no key for $control"; continue; }
DISPLAY="$display" xdotool "$action" "$host"
done
}
joyPress() {
hold keydown "$@"
}
joyRelease() {
hold keyup "$@"
}
# Hatari makes the file before it writes it: it is done when it has bytes
# and one more poll adds none.
joyShot() {
local before
local found
local size=""
local deadline
before=$(find "$JOY_WORK/shots" -name '*.png' | wc -l)
timeout 5 bash -c 'echo "hatari-shortcut screenshot" > "$1"' _ "$JOY_WORK/cmd.fifo" || return 1
deadline=$((SECONDS + shotSeconds))
while [ "$SECONDS" -lt "$deadline" ]; do
sleep 0.2
[ "$(find "$JOY_WORK/shots" -name '*.png' | wc -l)" -gt "$before" ] || continue
found=$(ls -t "$JOY_WORK/shots"/*.png | head -1)
[ -s "$found" ] || continue
if [ "$(stat -c %s "$found")" = "$size" ]; then
mv "$found" "$1"
return 0
fi
size=$(stat -c %s "$found")
done
return 1
}
# joyStage -- whether a screenshot now shows JOY's stage.
joyStage() {
joyShot "$JOY_WORK/probe.png" && "$(joeyTool joyScreen)" "$JOY_WORK/probe.png" "${JOY_SCREEN_ARGS[@]}" > /dev/null 2>&1
}
# The keyboard joysticks: Joystick1 (port 1) stick A, Joystick0 stick B.
{
for port in 1 0; do
stick=$([ "$port" = 1 ] && echo A || echo B)
printf '[Joystick%s]\nnJoystickMode = 2\nkUp = %s\nkDown = %s\nkLeft = %s\nkRight = %s\nkFire = %s\n\n' "$port" \
"$(hatariKey "$stick-up")" "$(hatariKey "$stick-down")" "$(hatariKey "$stick-left")" \
"$(hatariKey "$stick-right")" "$(hatariKey "$stick-button0")"
done
# The STe joypads, A in [Joystick2] and B in [Joystick3]: real sticks,
# the virtual gamepads SDL numbers 0 and 1.
if [ "$stePads" = 1 ]; then
printf '[Joystick2]\nnJoystickMode = 1\nnJoyId = 0\n\n[Joystick3]\nnJoystickMode = 1\nnJoyId = 1\n\n'
fi
} > "$JOY_WORK/joy.cfg"
[ "$stePads" = 0 ] || padStart "$JOY_WORK"
display=":$((RANDOM % 400 + 5100))"
Xvfb "$display" -screen 0 1024x768x24 -nolisten tcp > /dev/null 2>&1 &
xvfb=$!
sleep 1
mkdir -p "$JOY_WORK/shots" "$JOY_WORK/home"
(cd "$JOY_WORK" && exec env HOME="$JOY_WORK/home" XDG_CONFIG_HOME="$JOY_WORK/home" DISPLAY="$display" SDL_AUDIODRIVER=dummy "${PAD_ONLY_ENV[@]}" \
timeout -s KILL "$wall" "$HATARI" --configfile "$JOY_WORK/joy.cfg" --machine "$machine" --tos "$EMUTOS_IMG" \
--harddrive "$(dirname "$program")" --gemdos-drive C --auto "C:\\$(basename "$program")" \
--sound off --statusbar false --crop true --screenshot-dir "$JOY_WORK/shots" \
--cmd-fifo "$JOY_WORK/cmd.fifo") > "$JOY_WORK/hatari.log" 2>&1 &
guard=$!
hatari=$(joeyChild "$guard")
ready=0
for ((waited = 0; waited < readySeconds; waited += 2)); do
if [ -p "$JOY_WORK/cmd.fifo" ] && joyStage; then
ready=1
break
fi
joeyAlive "$guard" || break
sleep 2
done
if [ "$ready" != 1 ]; then
echo "$JOY_LABEL: FAIL - Hatari with JOY did not come up (log follows)" >&2
grep -v '^Screen dump saved' "$JOY_WORK/hatari.log" | tail -20 >&2
if [ -n "${JOY_SHOTS:-}" ] && [ -f "$JOY_WORK/probe.png" ]; then
mkdir -p "$JOY_SHOTS"
cp "$JOY_WORK/probe.png" "$JOY_SHOTS/not-ready.png"
fi
exit 1
fi
# Xvfb has no window manager: the keyboard goes to the focused window, and
# xdotool's keys (XTEST, which SDL takes) to the one that has it.
win=$(joeyFindWindow "$display" "$hatari")
if [ -n "$win" ]; then
DISPLAY="$display" xdotool windowfocus --sync "$win" 2> /dev/null || true
DISPLAY="$display" xdotool mousemove --window "$win" 20 20
fi
joyCheck "rest" "A=$JOY_REST B=$JOY_REST"
# Stick A's steps (the first seven), then B held: the mouse's port.
joyRunSteps "${JOY_STEPS_ONE_BUTTON[@]:0:7}" "B held: port 0 is the mouse's|B-left B-up B-button0|REST|REST"
if [ "$stePads" = 1 ]; then
padOrder
joyRunSteps "${PAD_STEPS[@]}"
fi
DISPLAY="$display" xdotool key Escape
gone=0
for ((waited = 0; waited < exitSeconds; waited++)); do
sleep 1
if ! joyStage; then
gone=1
break
fi
done
[ "$gone" = 1 ] || joyFail "Escape did not end JOY"
joyResult "$JOY_LABEL" "$machine: port 1 every direction, the fire button held as button 1 and every release; port 0 left to the mouse$([ "$stePads" = 0 ] || echo "; both Jaguar pads, their directions and A and B buttons, port 1 taking stick A back"); Escape ends JOY"