同步

Packages/dev.yarnspinner.unity/Editor/Utility/CreateDialogueRunnerMenuItem.cs

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+/*
+Yarn Spinner is licensed to you under the terms found in the file LICENSE.md.
+*/
+
+#nullable enable
+
+namespace Yarn.Unity.Editor
+{
+    using UnityEditor;
+    using UnityEngine;
+    using UnityEngine.EventSystems;
+    using Yarn.Unity;
+
+    /// <summary>
+    /// Adds a menu item to the menu bar for creating an instance of the
+    /// dialogue runner prefab.
+    /// </summary>
+    public static class CreateDialogueRunnerMenuItem
+    {
+        const string DialogueRunnerPrefabGUID = "52571f68872914e24837210513edea1d";
+
+        /// <summary>
+        /// Instantiates the Dialogue System prefab in the currently active scene,
+        /// and returns the created <see cref="DialogueRunner"/>.
+        /// </summary>
+        /// <returns>A newly created <see cref="DialogueRunner"/>.</returns>
+        /// <exception cref="System.InvalidOperationException">Thrown when the
+        /// Dialogue System prefab cannot be found in the Yarn Spinner
+        /// package.</exception>
+        [MenuItem("GameObject/Yarn Spinner/Dialogue System", priority = 11)]
+        public static DialogueRunner CreateDialogueRunner()
+        {
+
+            string assetPath = AssetDatabase.GUIDToAssetPath(DialogueRunnerPrefabGUID);
+            var prefabAsset = AssetDatabase.LoadAssetAtPath<GameObject>(assetPath);
+
+            if (prefabAsset == null)
+            {
+                throw new System.InvalidOperationException(
+                    $"Can't create a new Dialogue System: Can't find the prefab to create a Dialogue System from."
+                );
+            }
+
+            var instantiatedPrefab = (GameObject)PrefabUtility.InstantiatePrefab(prefabAsset);
+
+#if UNITY_2023_1_OR_NEWER
+            var eventSystems = Object.FindObjectsByType<EventSystem>(FindObjectsSortMode.None);
+#else
+            var eventSystems = Object.FindObjectsOfType<EventSystem>();
+#endif
+
+            if (eventSystems.Length > 1)
+            {
+                // At least one other event system is present in the scene. Turn off
+                // the one that came with the prefab - it's not needed.
+                var instantiatedEventSystem = instantiatedPrefab.GetComponentInChildren<EventSystem>();
+
+                instantiatedEventSystem.gameObject.SetActive(false);
+            }
+
+            return instantiatedPrefab.GetComponent<DialogueRunner>();
+        }
+    }
+}