diff --git a/scenes/elevator_panel.gd b/scenes/elevator_panel.gd
index 643bc73..80944a9 100644
--- a/scenes/elevator_panel.gd
+++ b/scenes/elevator_panel.gd
@@ -20,13 +20,6 @@ var people_in_elevator := 3
 var floor_time_limit := 10.0
 var floor_timer: Timer
 
-signal floor_changed(floor_num: int)
-signal saved_changed(count: int)
-signal score_changed(new_score: int)
-signal people_changed(count: int, threshold: int)
-signal game_won
-signal game_lost
-
 func get_threshold() -> int:
 	var floors_cleared := 10 - current_floor
 	return base_threshold + floors_cleared / threshold_increase_interval
@@ -41,8 +34,8 @@ func _ready():
 	add_child(floor_timer)
 	floor_timer.start()
 
-	floor_changed.emit(current_floor)
-	people_changed.emit(people_in_elevator, get_threshold())
+	EventBus.floor_changed.emit(current_floor)
+	EventBus.people_changed.emit(people_in_elevator, get_threshold())
 
 func _unhandled_input(event):
 	if event is InputEventKey and event.pressed and event.keycode == KEY_SPACE:
@@ -54,7 +47,7 @@ func _on_timer_expired():
 	doors_closing = true
 	var screen = $PanelMargin/PanelColumn/Screen
 	screen.show_loss("TOO LATE :[")
-	game_lost.emit()
+	EventBus.game_lost.emit()
 
 func _on_close_pressed():
 	if doors_closing:
@@ -68,22 +61,22 @@ func _on_close_pressed():
 
 		if people_in_elevator < get_threshold():
 			screen.show_loss("TOO FEW :[[")
-			game_lost.emit()
+			EventBus.game_lost.emit()
 			return
 
 		# base points per person, bonus for each person above threshold??
 		var bonus: int = max(0, people_in_elevator - get_threshold()) * points_per_person
 		score += people_in_elevator * points_per_person + bonus
-		score_changed.emit(score)
+		EventBus.score_changed.emit(score)
 
 		saved_count += people_in_elevator
 		current_floor -= 1
-		saved_changed.emit(saved_count)
-		floor_changed.emit(current_floor)
+		EventBus.saved_changed.emit(saved_count)
+		EventBus.floor_changed.emit(current_floor)
 
 		if current_floor <= 1:
 			screen.show_win()
-			game_won.emit()
+			EventBus.game_won.emit()
 		else:
 			screen.show_countdown()
 			var tween = create_tween()
@@ -91,7 +84,7 @@ func _on_close_pressed():
 				screen.reset_hack()
 				doors_closing = false
 				people_in_elevator = 3  # placeholder
-				people_changed.emit(people_in_elevator, get_threshold())
+				EventBus.people_changed.emit(people_in_elevator, get_threshold())
 				floor_timer.start()
 			).set_delay(2.0)
 	else:
diff --git a/scenes/hud.gd b/scenes/hud.gd
index 1edf517..1a27306 100644
--- a/scenes/hud.gd
+++ b/scenes/hud.gd
@@ -6,6 +6,11 @@ func _ready():
 	$StatsColumn/PeopleLabel.text = "PEOPLE: 0/2"
 	$StatsColumn/ScoreLabel.text = "SCORE: 0"
 
+	EventBus.floor_changed.connect(update_floor)
+	EventBus.saved_changed.connect(update_saved)
+	EventBus.people_changed.connect(update_people)
+	EventBus.score_changed.connect(update_score)
+
 func update_floor(floor_num: int):
 	$StatsColumn/FloorLabel.text = "FLOOR: " + str(floor_num)
 
diff --git a/scenes/survivor.gd b/scenes/survivor.gd
index 6bce050..f6bc9e6 100644
--- a/scenes/survivor.gd
+++ b/scenes/survivor.gd
@@ -14,4 +14,4 @@ func _physics_process(delta):
 
 
 func _on_area_3d_area_entered(area: Area3D) -> void:
-  pass # Replace with function body.
+	pass # Replace with function body.
diff --git a/scripts/event_bus.gd b/scripts/event_bus.gd
index c817135..ba6f2b0 100644
--- a/scripts/event_bus.gd
+++ b/scripts/event_bus.gd
@@ -2,5 +2,11 @@ extends Node
 
 @warning_ignore_start("unused_signal") # since otherwise Godot will throw a warning that the signal is unused in current scope
 
+signal floor_changed(floor_num: int)
+signal saved_changed(count: int)
+signal score_changed(new_score: int)
+signal people_changed(count: int, threshold: int)
+signal game_won
+signal game_lost
 
 @warning_ignore_restore("unused_signal") # put any future signals you add between the two ignore annotations