同步

Packages/dev.yarnspinner.unity/Runtime/Utility/InterfaceContainer.cs

@@ -0,0 +1,66 @@
+/*
+Yarn Spinner is licensed to you under the terms found in the file LICENSE.md.
+*/
+
+using UnityEngine;
+
+#nullable enable
+
+namespace Yarn.Unity
+{
+    [System.Serializable]
+    public class InterfaceContainer<TContainedType> : ISerializationCallbackReceiver where TContainedType : class
+    {
+        public UnityEngine.Object? targetObject;
+        public TContainedType? Interface
+        {
+            get
+            {
+                return targetObject as TContainedType;
+            }
+        }
+
+        public static implicit operator TContainedType?(InterfaceContainer<TContainedType> value)
+        {
+            return value.Interface;
+        }
+
+        // basically if we find a component that is our interface we override the target to be that
+        // and otherwise we null it out, also wiping the connection in the inspector
+        void OnValidate()
+        {
+            if (targetObject == null)
+            {
+                return;
+            }
+            if (this.Interface != null)
+            {
+                return;
+            }
+
+            if (targetObject is GameObject gameObject)
+            {
+                foreach (var component in gameObject.GetComponents<Component>())
+                {
+                    if (component is TContainedType)
+                    {
+                        targetObject = component;
+                        return;
+                    }
+                }
+            }
+
+            targetObject = null;
+        }
+
+        public void OnBeforeSerialize()
+        {
+            OnValidate();
+        }
+
+        public void OnAfterDeserialize()
+        {
+            return;
+        }
+    }
+}