using UnityEngine; using UnityEditor; using UnityEditorInternal; using System.Linq; using System.Reflection; namespace GameplayIngredients.Editor { public class CallableReorderableList : ReorderableList { public CallableReorderableList(SerializedObject targetObject, SerializedProperty listProperty) : base(targetObject, listProperty, true, true, true, true) { onAddDropdownCallback = AddDropdown; drawHeaderCallback = DrawHeader; drawElementCallback = DrawElement; } void DrawHeader(Rect r) { GUI.Label(r, new GUIContent($" {serializedProperty.displayName}", Styles.callableIcon), EditorStyles.boldLabel); HandleDrop(r, this); } void HandleDrop(Rect rect, CallableReorderableList list) { var currentEvent = Event.current; var usedEvent = false; switch (currentEvent.type) { case EventType.DragExited: if (GUI.enabled) HandleUtility.Repaint(); break; case EventType.DragUpdated: case EventType.DragPerform: if (rect.Contains(currentEvent.mousePosition) && GUI.enabled) { bool acceptAtLeastOne = false; Object[] droppedObjects = DragAndDrop.objectReferences; foreach (Object obj in droppedObjects) { if(obj != null && obj is GameObject) { DragAndDrop.visualMode = DragAndDropVisualMode.Copy; if (currentEvent.type == EventType.DragPerform) { GenericMenu m = new GenericMenu(); var callables = (obj as GameObject).GetComponents(); foreach(var c in callables) { m.AddItem(new GUIContent($"{c.Name} ({c.GetType().Name})"), false, () => { list.serializedProperty.serializedObject.Update(); list.serializedProperty.arraySize++; int arrayEnd = list.serializedProperty.arraySize - 1; list.serializedProperty.GetArrayElementAtIndex(arrayEnd).objectReferenceValue = c; list.serializedProperty.serializedObject.ApplyModifiedProperties(); }); } m.ShowAsContext(); acceptAtLeastOne = true; } } else if (obj != null && obj is Callable) { DragAndDrop.visualMode = DragAndDropVisualMode.Copy; if (currentEvent.type == EventType.DragPerform) { list.serializedProperty.arraySize++; int arrayEnd = list.serializedProperty.arraySize - 1; list.serializedProperty.GetArrayElementAtIndex(arrayEnd).objectReferenceValue = obj as Callable; acceptAtLeastOne = true; } } } if (acceptAtLeastOne) { GUI.changed = true; DragAndDrop.AcceptDrag(); usedEvent = true; } } break; } if (usedEvent) currentEvent.Use(); } void DrawElement(Rect r, int index, bool isActive, bool isFocused) { SerializedProperty element = serializedProperty.GetArrayElementAtIndex(index); r.y += 2.0f; r.x += 4.0f; r.width -= 4.0f; EditorGUI.PropertyField(new Rect(r.x, r.y, r.width, EditorGUIUtility.singleLineHeight), element, true); } public void AddDropdown(Rect buttonRect, ReorderableList list) { var component = list.serializedProperty.serializedObject.targetObject as Component; var gameObject = component.gameObject; var propertyName = list.serializedProperty.name; var provider = new CallableProvider( gameObject, component, propertyName ); ; BrowsePopup.Show(buttonRect.position, provider); } static class Styles { public static Texture2D callableIcon = AssetDatabase.LoadAssetAtPath("Packages/net.peeweek.gameplay-ingredients/Icons/Misc/ic-callable.png"); } } public static class CallableExtensions { public static void AddCallable(this GameObject gameObject, Component component, string propertyName, System.Type t) { var field = component.GetType().GetFields(BindingFlags.Public| BindingFlags.Instance | BindingFlags.NonPublic).Where(f => f.Name == propertyName).FirstOrDefault(); var val = field.GetValue(component) as Callable[]; if (t != null && typeof(Callable).IsAssignableFrom(t)) { var newCmp = Undo.AddComponent(gameObject, t); field.SetValue(component, val.Append(newCmp as Callable)); } else field.SetValue(component, val.Append(null)); } static T[] Append(this T[] array, T item) { if (array == null) { return new T[] { item }; } T[] result = new T[array.Length + 1]; array.CopyTo(result, 0); result[array.Length] = item; return result; } } }