Files
room_glitch/core/runtime/pi_gpio_client.gd
T
Jeff Luke 41ef12f954 Add Pac-Man power-on flow and document Odin integration
- Add a four-second arcade-style boot sequence followed by the
  Character / Nickname introduction.
- Separate cabinet power-on from RFID credit and player Start.
- Add operator Power on control and cabinet power-state reporting.
- Prevent repeated power commands from restarting boot or gameplay.
- Ignore RFID scans received before the cabinet is ready.
- Add power-state, RFID, controller, and GPIO feedback regression tests.

- Expand the master walkthrough with export, packaging, file transfer,
  fresh-Pi setup, RFID compilation, and end-to-end testing instructions.
- Correct tester hardware documentation: BCM23/J20 drives an LED;
  physical buttons connect through a separate I2C1 input board.
- Document operator-triggered power-on as the current test workflow
  and retain the temporary 2.4 configuration compatibility notes.
- Record successful physical testing of power-on, RFID credit,
  and player Start.

- Add an Odin integration README describing the proposed Rust/NATS
  bridge, shared messages, Flutter GM interface, autopilot sequencing,
  hardware ownership, and Starfish SSH-management role.
- Define migration milestones and information needed from the
  framework owner; link the integration guide from the root README.

Validation: 69 controller tests, 10 GPIO tests, Pac-Man power/RFID
checks, managed-cabinet lifecycle checks, and visual screen inspection.
2026-10-17 18:47:26 -07:00

79 lines
2.9 KiB
GDScript

extends Node
signal completed(id: int, ok: bool)
signal status_changed(message: String)
const URL := "http://127.0.0.1:8765"
var pending: Array[Dictionary] = []
var serial := 0
var busy := false
var device_feedback: Dictionary = {}
var feedback_received_ms: int = 0
var heartbeat: HTTPRequest
func _ready() -> void:
process_mode = Node.PROCESS_MODE_ALWAYS
heartbeat = HTTPRequest.new()
heartbeat.timeout = 1.0
add_child(heartbeat)
heartbeat.request_completed.connect(_feedback_response)
var timer := Timer.new()
timer.wait_time = 1.0
timer.timeout.connect(_heartbeat)
add_child(timer)
timer.start()
func _heartbeat() -> void:
if heartbeat.get_http_client_status() == HTTPClient.STATUS_DISCONNECTED:
heartbeat.request(URL + "/heartbeat", [], HTTPClient.METHOD_POST, "{}")
func send(payload: Dictionary) -> bool:
if pending.size() >= 32:
status_changed.emit("GPIO output queue is full")
return false
serial += 1
var id := serial
pending.append({"id": id, "payload": payload})
_pump.call_deferred()
while true:
var result: Array = await completed
if result[0] == id: return result[1]
return false
func _pump() -> void:
if busy or pending.is_empty(): return
busy = true
var item: Dictionary = pending[0]
var request := HTTPRequest.new()
request.timeout = 2.0
add_child(request)
var ok := false
var message := "GPIO bridge unavailable — start pi_gpio_bridge.py on this Pi"
var error := request.request(URL + "/output", ["Content-Type: application/json"], HTTPClient.METHOD_POST, JSON.stringify(item.payload))
if error == OK:
var response: Array = await request.request_completed
var body = JSON.parse_string(response[3].get_string_from_utf8())
ok = response[0] == HTTPRequest.RESULT_SUCCESS and response[1] == 200 and body is Dictionary and body.get("ok", false) == true
if body is Dictionary and body.has("error"): message = str(body.error)
request.queue_free()
pending.pop_front()
busy = false
status_changed.emit("GPIO %s accepted by Pi bridge" % item.payload.pin if ok else message)
completed.emit(item.id, ok)
_pump.call_deferred()
func _feedback_response(result: int, code: int, _headers: PackedStringArray, body: PackedByteArray) -> void:
if result != HTTPRequest.RESULT_SUCCESS or code != 200:
return
var data = JSON.parse_string(body.get_string_from_utf8())
if data is Dictionary and data.get("feedback") is Dictionary:
device_feedback = data.feedback
feedback_received_ms = Time.get_ticks_msec()
func get_feedback() -> Dictionary:
var result := device_feedback.duplicate(true)
result["fresh"] = feedback_received_ms > 0 and Time.get_ticks_msec() - feedback_received_ms < 4000
for device in result.get("devices", []):
device["age_ms"] = int(device.get("age_ms", 999999)) + maxi(0, Time.get_ticks_msec() - feedback_received_ms)
for entry in result.get("events", []):
entry["age_ms"] = int(entry.get("age_ms", 999999)) + maxi(0, Time.get_ticks_msec() - feedback_received_ms)
return result