From 78c100ba7c715f69a0ef78985daf18027152fbeb Mon Sep 17 00:00:00 2001
From: Mario Steele <mario@ruby-im.net>
Date: Thu, 26 Feb 2026 14:36:51 -0600
Subject: [PATCH] Created Promise

Created a class to handle monitoring of multiple signals.
---
 lib/promise.gd     | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 lib/promise.gd.uid |  1 +
 2 files changed, 54 insertions(+)
 create mode 100644 lib/promise.gd
 create mode 100644 lib/promise.gd.uid

diff --git a/lib/promise.gd b/lib/promise.gd
new file mode 100644
index 00000000..eaf7653d
--- /dev/null
+++ b/lib/promise.gd
@@ -0,0 +1,53 @@
+extends RefCounted
+class_name Promise
+
+signal resolved
+signal denied
+
+var waited_signals: Array[Signal] = []
+var triggered: Dictionary[Signal, bool] = {}
+var _denied: bool = false
+
+static func from_signals(...sigs: Array) -> Promise:
+	var promise := Promise.new()
+	promise.waited_signals.assign(sigs)
+	for sig: Signal in sigs:
+		promise.triggered[sig] = false
+	return promise
+
+func _connect_signals() -> void:
+	for sig: Signal in waited_signals:
+		sig.connect(_handle_signal.bind(sig))
+
+func _disconnect_signals() -> void:
+	for sig: Signal in waited_signals:
+		sig.disconnect(_handle_signal)
+
+func _handle_signal(sig: Signal, ...args: Array) -> void:
+	assert(triggered.has(sig), "Signal is not promised!")
+	triggered[sig] = true
+
+func any() -> void:
+	while await Engine.get_main_loop().process_frame:
+		if _denied:
+			_disconnect_signals()
+			denied.emit()
+			return
+		if triggered.values().any(func(x): return x):
+			_disconnect_signals()
+			resolved.emit()
+			return
+
+func all() -> void:
+	while await Engine.get_main_loop().process_frame:
+		if _denied:
+			_disconnect_signals()
+			denied.emit()
+			return
+		if triggered.values().all(func(x): return x):
+			_disconnect_signals()
+			resolved.emit()
+			return
+
+func deny() -> void:
+	_denied = true
diff --git a/lib/promise.gd.uid b/lib/promise.gd.uid
new file mode 100644
index 00000000..e4d2bbbd
--- /dev/null
+++ b/lib/promise.gd.uid
@@ -0,0 +1 @@
+uid://c122j2rn51q11