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Shows empty game objects in the hierarchy
// MIT License
//
// Copyright (c) 2020 Sabresaurus
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
using UnityEditor;
using UnityEngine;
[InitializeOnLoad]
public static class HierarchyEmptyObjectDisplay
{
static HierarchyEmptyObjectDisplay()
{
EditorApplication.hierarchyWindowItemOnGUI += OnHierarchyItemGUI;
}
private static void OnHierarchyItemGUI(int instanceID, Rect selectionRect)
{
GameObject gameObject = EditorUtility.InstanceIDToObject(instanceID) as GameObject;
if (gameObject == null) return;
Component[] components = gameObject.GetComponents<Component>();
// Transform counts as a component, so an empty game object has exactly one component
if (components.Length != 1) return;
Rect drawRect = selectionRect;
drawRect.xMax -= 2;
drawRect.xMin = drawRect.xMax - 38;
drawRect.height = 16;
Color lastColor = GUI.contentColor;
GUI.contentColor = Color.green;
GUI.Label(drawRect, new GUIContent(), EditorStyles.helpBox);
GUI.Label(drawRect, "Empty", EditorStyles.miniLabel);
GUI.contentColor = lastColor;
}
}
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