EditorでAnimatorの再生　その2

2021.04.09
Unity
script, Editor拡張

　前回（EditorでAnimatorの再生　その１）、Animator.UpdateによるAnimatorの再生を行いました。今回は、EditorWindowへAnimatorに設定されているパラメーターを表示し、それらを変更することでアニメーションの遷移を行う機能を追加しました。

1. Script
- 1.1. パラメーターの取得と表示
- 1.2. Animatorの初期化
2. 再生時間
3. 実行結果

Script

　作成したScriptは以下の通りです。

using System.Collections;
using System.Collections.Generic;
using System;
using UnityEngine;
using UnityEditor;

namespace Karakan
{
    public class AnimatorPlayerB : EditorWindow
    {
        GameObject _go_target;
        Animator _animator;
        TimeController _time_controller;

        Action<float> _action_play_animator;
        Action<int[], float> _action_init_animator;

        bool _flg_play = false, _flg_pause = false, _flg_stop = false,
            _flg_delay_pause = false, _flg_lock = false;

        int[] _default_state_hashes;
        float _play_speed = 1f;
        string _target_name = "None";
        AnimatorControllerParameter[] _animator_controller_param;

        //gui
        GUIContent _content_play_button = new GUIContent();
        GUIContent _content_pause_button = new GUIContent();
        GUIStyle _style_toolbar_button;

        int _border_line_width = 1;

        [MenuItem("Tools/AnimatorPlayerB")]
        public static void OpenWindow()
        {
            EditorWindow ed = EditorWindow.GetWindow(typeof(AnimatorPlayerB), false, "AnimatorPlayerB");
            ed.minSize = new Vector2(200, 456);
        }

        private void OnEnable()
        {
            _time_controller = new TimeController();

            _content_play_button.image = EditorGUIUtility.Load("PlayButton") as Texture;
            _content_pause_button.image = EditorGUIUtility.Load("PauseButton") as Texture;
            _style_toolbar_button = new GUIStyle(EditorStyles.toolbarButton);

            _action_play_animator = (delta_time) =>
            {
                if (_animator == null) return;
                _animator.Update(delta_time);
            };

            _action_init_animator = (def_state_hash, time) =>
            {
                for (int i = 0; i < def_state_hash.Length; i++) { _animator.Play(def_state_hash[i], -1, time); }
            };
        }

        private void OnDisable()
        {
            if (_animator != null)
            {
                _action_init_animator(_default_state_hashes, 0f);
                _action_play_animator(1f);
            }
        }

        public void OnSelectionChange()
        {
            if (!_flg_lock)
            {
                _go_target = Selection.activeGameObject;
                Repaint();
            }
            else
            {
                return;
            }

            if (_go_target == null)
            {
                _go_target = null;
                _animator = null;
                _target_name = "None";
                return;
            }

            _animator = _go_target.GetComponent<Animator>();
            if (_animator == null)
            {
                _go_target = null;
                _target_name = "None";
                return;
            }

            _target_name = _go_target.name;
            _animator.speed = 0f;

            //get default state hash
            int animator_layer_count = _animator.layerCount;
            _default_state_hashes = new int[animator_layer_count];
            for (int i = 0; i < animator_layer_count; i++)
            {
                AnimatorStateInfo anim_info = _animator.GetCurrentAnimatorStateInfo(i);
                _default_state_hashes[i] = anim_info.fullPathHash;
            }

            //get parameters
            _animator_controller_param = _animator.parameters;
            Repaint();
        }

        private void OnGUI()
        {
            TimeControlUnit();

            EditorGUILayout.LabelField("Selected GameObject:" + _target_name);

            BorderLine(_border_line_width);

            EditorGUILayout.LabelField("Parameters");
            if (_animator != null)
            {
                for (int i = 0; i < _animator_controller_param.Length; i++)
                {
                    switch (_animator_controller_param[i].type)
                    {
                        case AnimatorControllerParameterType.Bool:
                            string bool_name = _animator_controller_param[i].name;
                            bool flg = EditorGUILayout.Toggle(bool_name, _animator.GetBool(bool_name));
                            _animator.SetBool(bool_name, flg);
                            break;

                        case AnimatorControllerParameterType.Float:
                            string float_name = _animator_controller_param[i].name;
                            float float_val = EditorGUILayout.FloatField(float_name, _animator.GetFloat(float_name));
                            _animator.SetFloat(float_name, float_val);
                            break;

                        case AnimatorControllerParameterType.Int:
                            string int_name = _animator_controller_param[i].name;
                            int int_val = EditorGUILayout.IntField(int_name, _animator.GetInteger(int_name));
                            _animator.SetInteger(int_name, int_val);
                            break;

                        case AnimatorControllerParameterType.Trigger:
                            string trigger_name = _animator_controller_param[i].name;
                            if (GUILayout.Button(trigger_name))
                            {
                                _animator.SetTrigger(trigger_name);
                            }
                            break;
                    }
                }
            }
        }

        void TimeControlUnit()
        {
            if (_animator == null) return;

            Event ev = Event.current;
            _time_controller.speed = _play_speed;

            //コントロール用toolbar
            int toolbar_button_width = 50;
            EditorGUILayout.BeginHorizontal();
            {
                //Play/Stop
                EditorGUI.BeginChangeCheck();
                bool temp_flg_play = GUILayout.Toggle(_flg_play, _content_play_button, _style_toolbar_button, GUILayout.Width(toolbar_button_width));
                if (ev.button == 0) _flg_play = temp_flg_play;
                if (EditorGUI.EndChangeCheck())
                {
                    if (_flg_play)
                    {
                        _flg_pause = false;
                        _time_controller.Play();
                        _animator.speed = _play_speed;
                    }
                    else
                    {
                        _time_controller.Stop();
                        _flg_pause = false;
                        GUI.changed = true;
                        _flg_stop = true;
                    }
                }

                //Pause
                EditorGUI.BeginChangeCheck();
                bool temp_flg_pause = GUILayout.Toggle(_flg_pause, _content_pause_button, _style_toolbar_button, GUILayout.Width(toolbar_button_width));
                if (ev.button == 0) _flg_pause = temp_flg_pause;
                if (_flg_play == false && _time_controller.isPlay == false) _flg_pause = false;
                if (EditorGUI.EndChangeCheck())
                {
                    if (_flg_pause)
                    {
                        _time_controller.Pause();
                        _animator.speed = 0f;
                        _flg_delay_pause = true;
                    }
                    else
                    {
                        if (_flg_play)
                        {
                            _time_controller.Play();
                            _animator.speed = _play_speed;
                        }
                    }
                }

                //再生時間
                float time = _time_controller.time;
                int hour = (int)(time / 3600f);
                time -= hour * 3600f;
                int minutes = (int)(time / 60f);
                float sec = time - minutes * 60f;
                EditorGUILayout.LabelField(hour.ToString() + ":" + minutes.ToString() + ":" + sec.ToString("f3"));

                if (_flg_stop)
                {
                    _time_controller.time = 0f;
                    _animator.speed = 0f;
                    _action_init_animator(_default_state_hashes, 0f);
                    _flg_stop = false;
                }

                GUILayout.Box(GUIContent.none, _style_toolbar_button, GUILayout.ExpandWidth(true));

                _flg_lock = GUILayout.Toggle(_flg_lock, new GUIContent("Lock"), _style_toolbar_button, GUILayout.Width(toolbar_button_width));
            }
            EditorGUILayout.EndHorizontal();

            if (_time_controller.isPlay) HandleUtility.Repaint();
        }

        void BorderLine(int height)
        {
            GUILayout.Box(GUIContent.none, GUILayout.ExpandWidth(true), GUILayout.Height(height));
        }

        private void Update()
        {
            if (_time_controller != null && _animator != null)
            {
                _time_controller.TimeUpdate();
                _action_play_animator?.Invoke(Time.deltaTime);
            }
        }
    }
}

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using System.Collections;

using System.Collections.Generic;

using System;

using UnityEngine;

using UnityEditor;

namespace Karakan

{

public class AnimatorPlayerB : EditorWindow

{

GameObject _go_target;

Animator _animator;

TimeController _time_controller;

Action<float> _action_play_animator;

Action<int[], float> _action_init_animator;

bool _flg_play = false, _flg_pause = false, _flg_stop = false,

_flg_delay_pause = false, _flg_lock = false;

int[] _default_state_hashes;

float _play_speed = 1f;

string _target_name = "None";

AnimatorControllerParameter[] _animator_controller_param;

//gui

GUIContent _content_play_button = new GUIContent();

GUIContent _content_pause_button = new GUIContent();

GUIStyle _style_toolbar_button;

int _border_line_width = 1;

[MenuItem("Tools/AnimatorPlayerB")]

public static void OpenWindow()

{

EditorWindow ed = EditorWindow.GetWindow(typeof(AnimatorPlayerB), false, "AnimatorPlayerB");

ed.minSize = new Vector2(200, 456);

}

private void OnEnable()

{

_time_controller = new TimeController();

_content_play_button.image = EditorGUIUtility.Load("PlayButton") as Texture;

_content_pause_button.image = EditorGUIUtility.Load("PauseButton") as Texture;

_style_toolbar_button = new GUIStyle(EditorStyles.toolbarButton);

_action_play_animator = (delta_time) =>

{

if (_animator == null) return;

_animator.Update(delta_time);

};

_action_init_animator = (def_state_hash, time) =>

{

for (int i = 0; i < def_state_hash.Length; i++) { _animator.Play(def_state_hash[i], -1, time); }

};

}

private void OnDisable()

{

if (_animator != null)

{

_action_init_animator(_default_state_hashes, 0f);

_action_play_animator(1f);

}

public void OnSelectionChange()

{

if (!_flg_lock)

{

_go_target = Selection.activeGameObject;

Repaint();

}

else

{

return;

}

if (_go_target == null)

{

_go_target = null;

_animator = null;

_target_name = "None";

return;

}

_animator = _go_target.GetComponent<Animator>();

if (_animator == null)

{

_go_target = null;

_target_name = "None";

return;

}

_target_name = _go_target.name;

_animator.speed = 0f;

//get default state hash

int animator_layer_count = _animator.layerCount;

_default_state_hashes = new int[animator_layer_count];

for (int i = 0; i < animator_layer_count; i++)

{

AnimatorStateInfo anim_info = _animator.GetCurrentAnimatorStateInfo(i);

_default_state_hashes[i] = anim_info.fullPathHash;

}

//get parameters

_animator_controller_param = _animator.parameters;

Repaint();

}

private void OnGUI()

{

TimeControlUnit();

EditorGUILayout.LabelField("Selected GameObject:" + _target_name);

BorderLine(_border_line_width);

EditorGUILayout.LabelField("Parameters");

if (_animator != null)

{

for (int i = 0; i < _animator_controller_param.Length; i++)

{

switch (_animator_controller_param[i].type)

{

case AnimatorControllerParameterType.Bool:

string bool_name = _animator_controller_param[i].name;

bool flg = EditorGUILayout.Toggle(bool_name, _animator.GetBool(bool_name));

_animator.SetBool(bool_name, flg);

break;

case AnimatorControllerParameterType.Float:

string float_name = _animator_controller_param[i].name;

float float_val = EditorGUILayout.FloatField(float_name, _animator.GetFloat(float_name));

_animator.SetFloat(float_name, float_val);

break;

case AnimatorControllerParameterType.Int:

string int_name = _animator_controller_param[i].name;

int int_val = EditorGUILayout.IntField(int_name, _animator.GetInteger(int_name));

_animator.SetInteger(int_name, int_val);

break;

case AnimatorControllerParameterType.Trigger:

string trigger_name = _animator_controller_param[i].name;

if (GUILayout.Button(trigger_name))

{

_animator.SetTrigger(trigger_name);

}

break;

}

void TimeControlUnit()

{

if (_animator == null) return;

Event ev = Event.current;

_time_controller.speed = _play_speed;

//コントロール用toolbar

int toolbar_button_width = 50;

EditorGUILayout.BeginHorizontal();

{

//Play/Stop

EditorGUI.BeginChangeCheck();

bool temp_flg_play = GUILayout.Toggle(_flg_play, _content_play_button, _style_toolbar_button, GUILayout.Width(toolbar_button_width));

if (ev.button == 0) _flg_play = temp_flg_play;

if (EditorGUI.EndChangeCheck())

{

if (_flg_play)

{

_flg_pause = false;

_time_controller.Play();

_animator.speed = _play_speed;

}

else

{

_time_controller.Stop();

_flg_pause = false;

GUI.changed = true;

_flg_stop = true;

}

//Pause

EditorGUI.BeginChangeCheck();

bool temp_flg_pause = GUILayout.Toggle(_flg_pause, _content_pause_button, _style_toolbar_button, GUILayout.Width(toolbar_button_width));

if (ev.button == 0) _flg_pause = temp_flg_pause;

if (_flg_play == false && _time_controller.isPlay == false) _flg_pause = false;

if (EditorGUI.EndChangeCheck())

{

if (_flg_pause)

{

_time_controller.Pause();

_animator.speed = 0f;

_flg_delay_pause = true;

}

else

{

if (_flg_play)

{

_time_controller.Play();

_animator.speed = _play_speed;

}

//再生時間

float time = _time_controller.time;

int hour = (int)(time / 3600f);

time -= hour * 3600f;

int minutes = (int)(time / 60f);

float sec = time - minutes * 60f;

EditorGUILayout.LabelField(hour.ToString() + ":" + minutes.ToString() + ":" + sec.ToString("f3"));

if (_flg_stop)

{

_time_controller.time = 0f;

_animator.speed = 0f;

_action_init_animator(_default_state_hashes, 0f);

_flg_stop = false;

}

GUILayout.Box(GUIContent.none, _style_toolbar_button, GUILayout.ExpandWidth(true));

_flg_lock = GUILayout.Toggle(_flg_lock, new GUIContent("Lock"), _style_toolbar_button, GUILayout.Width(toolbar_button_width));

}

EditorGUILayout.EndHorizontal();

if (_time_controller.isPlay) HandleUtility.Repaint();

}

void BorderLine(int height)

{

GUILayout.Box(GUIContent.none, GUILayout.ExpandWidth(true), GUILayout.Height(height));

}

private void Update()

{

if (_time_controller != null && _animator != null)

{

_time_controller.TimeUpdate();

_action_play_animator?.Invoke(Time.deltaTime);

}

パラメーターの取得と表示

　Aniamtor.parametersによってAnimetorに設定されているAnimatorControllerParameterを取得することができます。これを用いて各パラメーターの型に応じてコントロールの表示を行います。

AnimatorControllerParameter[] _animator_controller_param;

public void OnSelectionChange()
{
    ･･･
    //get parameters
    _animator_controller_param = _animator.parameters;
    Repaint();
}

private void OnGUI()
{

   ･･･
   if (_animator != null)
   {
       for (int i = 0; i < _animator_controller_param.Length; i++)
       {
           switch (_animator_controller_param[i].type)
           {
               case AnimatorControllerParameterType.Bool:
                   string bool_name = _animator_controller_param[i].name;
                   bool flg = EditorGUILayout.Toggle(bool_name, _animator.GetBool(bool_name));
                   _animator.SetBool(bool_name, flg);
                   break;

               case AnimatorControllerParameterType.Float:
                   string float_name = _animator_controller_param[i].name;
                   float float_val = EditorGUILayout.FloatField(float_name, _animator.GetFloat(float_name));
                   _animator.SetFloat(float_name, float_val);
                   break;

               case AnimatorControllerParameterType.Int:
                   string int_name = _animator_controller_param[i].name;
                   int int_val = EditorGUILayout.IntField(int_name, _animator.GetInteger(int_name));
                   _animator.SetInteger(int_name, int_val);
                   break;

               case AnimatorControllerParameterType.Trigger:
                   string trigger_name = _animator_controller_param[i].name;
                   if (GUILayout.Button(trigger_name))
                   {
                       _animator.SetTrigger(trigger_name);
                   }
                   break;
           }
       }
   }
}

AnimatorControllerParameter[] _animator_controller_param;

public void OnSelectionChange()

{

･･･

//get parameters

_animator_controller_param = _animator.parameters;

Repaint();

}

private void OnGUI()

{

･･･

if (_animator != null)

{

for (int i = 0; i < _animator_controller_param.Length; i++)

{

switch (_animator_controller_param[i].type)

{

case AnimatorControllerParameterType.Bool:

string bool_name = _animator_controller_param[i].name;

bool flg = EditorGUILayout.Toggle(bool_name, _animator.GetBool(bool_name));

_animator.SetBool(bool_name, flg);

break;

case AnimatorControllerParameterType.Float:

string float_name = _animator_controller_param[i].name;

float float_val = EditorGUILayout.FloatField(float_name, _animator.GetFloat(float_name));

_animator.SetFloat(float_name, float_val);

break;

case AnimatorControllerParameterType.Int:

string int_name = _animator_controller_param[i].name;

int int_val = EditorGUILayout.IntField(int_name, _animator.GetInteger(int_name));

_animator.SetInteger(int_name, int_val);

break;

case AnimatorControllerParameterType.Trigger:

string trigger_name = _animator_controller_param[i].name;

if (GUILayout.Button(trigger_name))

{

_animator.SetTrigger(trigger_name);

}

break;

}

Animatorの初期化

　Animatorを読み込んだ際、Animator.GetCurrentAnimatorStateInfoによって各レイヤーのEntryに接続されているAnimation Stateの情報を取得します。この情報からAnimation Stateのハッシュを取得します。取得したハッシュを用いてAnimator.Playを実行することで初期化を行います。

Action<int[], float> _action_init_animator;

private void OnEnable()
{
    ･･･
    _action_init_animator = (def_state_hash, time) =>
    {
        for (int i = 0; i < def_state_hash.Length; i++) { _animator.Play(def_state_hash[i], -1, time); }
    };
}

public void OnSelectionChange()
{
    ･･･
    //get default state hash
    int animator_layer_count = _animator.layerCount;
    _default_state_hashes = new int[animator_layer_count];
    for (int i = 0; i < animator_layer_count; i++)
    {
        AnimatorStateInfo anim_info = _animator.GetCurrentAnimatorStateInfo(i);
        _default_state_hashes[i] = anim_info.fullPathHash;
    }
    ･･･
}

void TimeControlUnit()
{
    ･･･
    _action_init_animator(_default_state_hashes, 0f);
    ･･･
}

Action<int[], float> _action_init_animator;

private void OnEnable()

{

･･･

_action_init_animator = (def_state_hash, time) =>

{

for (int i = 0; i < def_state_hash.Length; i++) { _animator.Play(def_state_hash[i], -1, time); }

};

}

public void OnSelectionChange()

{

･･･

//get default state hash

int animator_layer_count = _animator.layerCount;

_default_state_hashes = new int[animator_layer_count];

for (int i = 0; i < animator_layer_count; i++)

{

AnimatorStateInfo anim_info = _animator.GetCurrentAnimatorStateInfo(i);

_default_state_hashes[i] = anim_info.fullPathHash;

}

･･･

}

void TimeControlUnit()

{

･･･

_action_init_animator(_default_state_hashes, 0f);

･･･

}

再生時間

　再生時間はUpdate内で計測しており、Layout→Repaint→Updateの順に実行されるためEditorWindowで表示される数値は1フレームの遅れが生じます。

private void OnGUI()
{
    TimeControlUnit();
    ･･･
}

void TimeControlUnit()
{
    ･･･
//再生時間
float time = _time_controller.time;
    //再生時間
    float time = _time_controller.time;
    int hour = (int)(time / 3600f);
    time -= hour * 3600f;
    int minutes = (int)(time / 60f);
    float sec = time - minutes * 60f;
    EditorGUILayout.LabelField(hour.ToString() + ":" + minutes.ToString() + ":" + sec.ToString("f3"));
    ･･･
}

private void Update()
{
    if (_time_controller != null && _animator != null)
    {
        _time_controller.TimeUpdate();
        ･･･
    }
}

private void OnGUI()

{

TimeControlUnit();

･･･

}

void TimeControlUnit()

{

･･･

//再生時間

float time = _time_controller.time;

//再生時間

float time = _time_controller.time;

int hour = (int)(time / 3600f);

time -= hour * 3600f;

int minutes = (int)(time / 60f);

float sec = time - minutes * 60f;

EditorGUILayout.LabelField(hour.ToString() + ":" + minutes.ToString() + ":" + sec.ToString("f3"));

･･･

}

private void Update()

{

if (_time_controller != null && _animator != null)

{

_time_controller.TimeUpdate();

･･･

}

実行結果

　以上のScriptを実行するにあたり作成したAnimatorControllerは以下の通りです。

実行結果は以下の通りです。Speedの変更によりStanding→Walking→Runing、トリガーによるジャンプができています。また、フェイスアニメーションも問題なくできておりAnimatorの再生に問題はないようです。ジャンプ中の一時停止及び再開も問題なくできており、Animatorの停止時に初期状態へ戻す処理も機能していることが分かります。