fix: Scene tree timer issues

Levels/Scripts/WorldManager.gd

@@ -93,7 +93,7 @@ func spawnEnemy(enemyScene: PackedScene, laneToSpawn: int, delay: float) -> void
 	var enemy : PathFollow3D = createEnemy(enemyScene)
 
 	if delay > 0:
-		await get_tree().create_timer(delay).timeout
+		await get_tree().create_timer(delay, false).timeout
 
 	paths[laneToSpawn].add_child(enemy)
 	enemiesAlive += 1

Towers/Tower.gd

@@ -169,5 +169,5 @@ func toggleConnection(activate : bool) -> void:
 func disable(duration : float) -> void:
 	state = STATE.DISABLED
 	resting()
-	await get_tree().create_timer(duration).timeout
+	await get_tree().create_timer(duration, false).timeout
 	state = STATE.REST

UI/gui.gd

@@ -59,7 +59,7 @@ func updateWaveCooldownLabel(waveCooldown : float) -> void:
 		else:
 			$WaveCooldown.text = "\n\nNext wave : %3.1f" % waveCooldown
 		waveCooldown -= tickDuration
-		await get_tree().create_timer(tickDuration).timeout
+		await get_tree().create_timer(tickDuration, false).timeout
 
 	$WaveCooldown.visible = false
 

UI/gui.tscn

@@ -46,6 +46,7 @@ theme = ExtResource("5_wpcnu")
 script = ExtResource("2_sac4j")
 
 [node name="WaveCooldown" type="Label" parent="."]
+process_mode = 1
 layout_mode = 1
 anchors_preset = 5
 anchor_left = 0.5