Lots of little tweaks and fixes

ui/UISingleton.gd

@@ -1,6 +1,7 @@
 extends Node
 
 var rootUi:RootUI = null
+var interactIndicator:InteractIndicator = null
 
 # True whenever any dialogue resource is being processed by DialogueManager.
 # Driven by DialogueManager.dialogue_started / dialogue_ended signals.
@@ -19,6 +20,9 @@ func _onDialogueStarted(_resource:DialogueResource) -> void:
 func _onDialogueEnded(_resource:DialogueResource) -> void:
   dialogueActive = false
 
+var INTERACT_INDICATOR:InteractIndicator:
+  get(): return interactIndicator
+
 var chatBoxContainer:Control:
   get():
     if rootUi:
@@ -42,3 +46,21 @@ var PAUSE_MENU:PauseMenu:
     if rootUi:
       return rootUi.pauseMenu
     return null
+
+var QUIT_DIALOG:QuitConfirmDialog:
+  get():
+    if rootUi:
+      return rootUi.quitConfirmDialog
+    return null
+
+var MAIN_MENU_DIALOG:ConfirmDialog:
+  get():
+    if rootUi:
+      return rootUi.mainMenuConfirmDialog
+    return null
+
+var BACKDROP:ModalBackdrop:
+  get():
+    if rootUi:
+      return rootUi.modalBackdrop
+    return null