Add event callbacks to start and end of dialogue

Assets/Scripts/Dialogue/DialogueManager.cs

@@ -2,6 +2,7 @@
 using UnityEngine;
 using UnityEngine.UI;
 using System.Linq;
+using UnityEngine.Events;
 namespace Nudle.Scripts.Dialogue
 {
@@ -18,6 +19,8 @@ namespace Nudle.Scripts.Dialogue
         private Dialogue currentDialogue;
         private List<Button> choiceButtons;
+        internal UnityEvent OnExit;
+
         internal void Start()
         {
             choiceButtons = new List<Button>();
@@ -115,6 +118,9 @@ namespace Nudle.Scripts.Dialogue
             {
                 animator.SetBool("IsOpen", false);
                 currentDialogue = null;
+                if (OnExit != null)
+                    OnExit.Invoke();
+                OnExit = null;
                 return;
             }
             StartDialogue(next);

Assets/Scripts/Dialogue/Interactable.cs

 using UnityEngine;
+using UnityEngine.Events;
 using UnityEngine.UI;
 namespace Nudle.Scripts.Dialogue
@@ -12,6 +13,9 @@ namespace Nudle.Scripts.Dialogue
         public Vector2 FloatingTextOffset = new Vector2(0f, 50f);
         public bool ForceStart;
+        public UnityEvent OnStart;
+        public UnityEvent OnExit;
+
         private Text Floater;
         private DialogueManager GetDialogueManager() => FindObjectOfType<DialogueManager>();
@@ -24,7 +28,11 @@ namespace Nudle.Scripts.Dialogue
             {
                 if (DialogueUtil.AreAllSet(possibleDialogue.RequiredSetFlags) && DialogueUtil.AreAllUnset(possibleDialogue.RequiredUnsetFlags))
                 {
-                    GetDialogueManager().StartDialogue(possibleDialogue);
+                    var dm = GetDialogueManager();
+                    dm.OnExit = OnExit;
+                    dm.StartDialogue(possibleDialogue);
+                    if (OnStart != null)
+                        OnStart.Invoke();
                     return;
                 }
             }