SetEmptyAnimationToNone

SetEmptyAnimationToNone.cs

/*
 * SetEmptyAnimationToNone
 * TODO: Description
 * https://gist.github.com/anatawa12/2a6e0a3607e35d57a4b0ff54fa437c14
 *
 * Click `Tools/anatawa12 gists/SetEmptyAnimationToNone` to open this window.
 *
 * MIT License
 * 
 * Copyright (c) 2023 anatawa12
 * 
 * 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.
 */

#if UNITY_EDITOR && (!ANATAWA12_GISTS_VPM_PACKAGE || GIST_2a6e0a3607e35d57a4b0ff54fa437c14)

using System;
using System.Collections.Generic;
using UnityEditor;
using UnityEditor.Animations;
using UnityEngine;
using Object = UnityEngine.Object;

namespace anatawa12.gists
{
    internal class SetEmptyAnimationToNone : EditorWindow
    {
        private const string GIST_NAME = "SetEmptyAnimationToNone";

        [MenuItem("Tools/anatawa12 gists/" + GIST_NAME)]
        static void Create() => GetWindow<SetEmptyAnimationToNone>(GIST_NAME);

        private AnimatorController controller;
        private AnimationClip emptyClip;

        private void OnGUI()
        {
            controller =
                EditorGUILayout.ObjectField("Animator Controller", controller, typeof(AnimatorController), false) as
                    AnimatorController;
            emptyClip =
                EditorGUILayout.ObjectField("Empty Clip", emptyClip, typeof(AnimationClip), false) as AnimationClip;

            if (controller && emptyClip && GUILayout.Button("Set Empty Clip to None"))
            {
                foreach (var layer in controller.layers)
                {
                    WalkStateMachineState(layer.stateMachine, state =>
                    {
                        if (!state.motion)
                        {
                            state.motion = emptyClip;
                            EditorUtility.SetDirty(state);
                        }
                    });

                    if (0 < layer.syncedLayerIndex && layer.syncedLayerIndex < controller.layers.Length)
                    {
                        WalkStateMachineState(controller.layers[layer.syncedLayerIndex].stateMachine, state =>
                        {
                            if (!layer.GetOverrideMotion(state))
                            {
                                layer.SetOverrideMotion(state, emptyClip);
                                EditorUtility.SetDirty(state);
                            }
                        });
                    }
                }
            }
        }

        private void WalkStateMachineState(AnimatorStateMachine stateMachine, Action<AnimatorState> onState)
        {
            if (stateMachine)
                return;

            foreach (var animatorState in stateMachine.states)
                onState(animatorState.state);

            foreach (var childStateMachine in stateMachine.stateMachines)
                WalkStateMachineState(childStateMachine.stateMachine, onState);
        }
    }
}

#endif