better gate not responding

app/scripts/navigation.gd

@@ -0,0 +1,54 @@
+extends Node
+#class_name Navigation
+
+signal updated()
+
+@export var gate_events: GateEvents
+@export var history: History
+
+
+func _ready() -> void:
+	gate_events.open_gate.connect(new)
+	gate_events.search.connect(new)
+	gate_events.exit_gate.connect(new.bind(""))
+
+
+func can_forw() -> bool:
+	return history.can_forw()
+
+
+func can_back() -> bool:
+	return history.can_back()
+
+
+func new(location: String) -> void:
+	history.add(location)
+	updated.emit()
+
+
+func go_back() -> void:
+	open(history.back())
+	updated.emit()
+
+
+func go_forw() -> void:
+	open(history.forw())
+	updated.emit()
+
+
+func reload() -> void:
+	open(history.get_current())
+	updated.emit()
+
+
+func home() -> void:
+	gate_events.exit_gate_emit()
+
+
+func open(location: String) -> void:
+	if location == "":
+		gate_events.exit_gate_emit()
+	elif Url.is_valid(location):
+		gate_events.open_gate_emit(location)
+	else:
+		gate_events.search_emit(location)

app/scripts/sandbox/process_checker.gd

@@ -5,8 +5,8 @@ extends Node
 @export var snbx_manager: SandboxManager
 
 # Timeout intervals for child process responsiveness
-const BOOTUP_CHECK_SEC = 1
-const HEARTBEAT_INTERVAL_SEC = 5
+const BOOTUP_CHECK_SEC = 3
+const HEARTBEAT_INTERVAL_SEC = 10
 const WAIT_INTERVAL_SEC = 15
 
 var bootup_timer: Timer
@@ -20,7 +20,7 @@ func _ready() -> void:
 	add_child(heartbeat_timer)
 	
 	bootup_timer.timeout.connect(bootup_check)
-	heartbeat_timer.timeout.connect(on_timeout)
+	heartbeat_timer.timeout.connect(heartbeat_check)
 	
 	gate_events.gate_entered.connect(start_bootup_check)
 	gate_events.first_frame.connect(start_heartbeat_timer)
@@ -35,7 +35,7 @@ func bootup_check() -> void:
 	if snbx_manager.is_sandbox_running(): return
 	
 	bootup_timer.stop()
-	on_timeout()
+	on_timeout("Gate crashed")
 
 
 func start_heartbeat_timer() -> void:
@@ -47,7 +47,14 @@ func restart_heartbeat_timer() -> void:
 	heartbeat_timer.start(HEARTBEAT_INTERVAL_SEC)
 
 
-func on_timeout() -> void:
-	Debug.logerr("Gate is not responding")
+func heartbeat_check() -> void:
+	var error = "Gate is not responding" if snbx_manager.is_sandbox_running() else "Gate crashed"
+	
+	heartbeat_timer.stop()
+	on_timeout(error)
+
+
+func on_timeout(error: String) -> void:
+	Debug.logerr(error)
 	gate_events.not_responding_emit()
 	heartbeat_timer.start(WAIT_INTERVAL_SEC)

app/scripts/ui/menu/menu_navigation.gd

@@ -1,7 +1,6 @@
 extends Node
 
 @export var gate_events: GateEvents
-@export var history: History
 
 @export var go_back: RoundButton
 @export var go_forw: RoundButton
@@ -10,50 +9,18 @@ extends Node
 
 
 func _ready() -> void:
-	gate_events.open_gate.connect(on_new)
-	gate_events.search.connect(on_new)
-	gate_events.exit_gate.connect(on_new.bind(""))
+	go_back.pressed.connect(Navigation.go_back)
+	go_forw.pressed.connect(Navigation.go_forw)
+	reload.pressed.connect(Navigation.reload)
+	home.pressed.connect(Navigation.home)
 	
-	go_back.pressed.connect(on_go_back)
-	go_forw.pressed.connect(on_go_forw)
-	reload.pressed.connect(on_reload)
-	home.pressed.connect(gate_events.exit_gate_emit)
-	
-	go_back.disable()
-	go_forw.disable()
-
-
-func on_new(location: String) -> void:
-	history.add(location)
+	Navigation.updated.connect(update_buttons)
 	update_buttons()
 
 
-func on_go_back() -> void:
-	open(history.back())
-	update_buttons()
-
-
-func on_go_forw() -> void:
-	open(history.forw())
-	update_buttons()
-
-
-func on_reload() -> void:
-	open(history.get_current())
-
-
-func open(location: String) -> void:
-	if location == "":
-		gate_events.exit_gate_emit()
-	elif Url.is_valid(location):
-		gate_events.open_gate_emit(location)
-	else:
-		gate_events.search_emit(location)
-
-
 func update_buttons() -> void:
-	if history.can_back(): go_back.enable()
+	if Navigation.can_back(): go_back.enable()
 	else: go_back.disable()
 	
-	if history.can_forw(): go_forw.enable()
+	if Navigation.can_forw(): go_forw.enable()
 	else: go_forw.disable()

app/scripts/ui/world/not_responding.gd

@@ -4,7 +4,7 @@ extends Control
 @export var history: History
 @export var root: TextureButton
 @export var reload: Button
-@export var wait: Button
+@export var back: Button
 @export var fade_in: float = 1.0
 @export var fade_out: float = 0.2
 
@@ -18,7 +18,7 @@ func _ready() -> void:
 	gate_events.not_responding.connect(show_message)
 	reload.pressed.connect(reload_gate)
 	root.pressed.connect(hide_message)
-	wait.pressed.connect(hide_message)
+	back.pressed.connect(Navigation.go_back)
 	
 	visible = true
 	root.hide()