Time.timescaleを変更せずにRigidbodyの一時停止&再開処理【Unity】【拡張メソッド】

Rigidbody2DExtension.cs

//  Rigidbody2DExtension.cs
//  http://kan-kikuchi.hatenablog.com/entry/Pause_Resume
//
//  Created by kan kikuchi on 2015.11.26.

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

 
//一時停止時の速度を保管するクラス
public class Velocity2DTmp : MonoBehaviour{
  //一時停止時の速度
  private float   _angularVelocity;
  private Vector2 _velocity;

  public float AngularVelocity{
    get{return _angularVelocity;}
  }
  public Vector2 Velocity{
    get{return _velocity;}
  }

  /// <summary>
  /// Rigidbody2Dを入力して速度を設定する
  /// </summary>
  public void Set(Rigidbody2D rigidbody2D){
    _angularVelocity = rigidbody2D.angularVelocity;
    _velocity        = rigidbody2D.velocity;
  }

}

/// <summary>
/// Rigidbody2D 型の拡張メソッドを管理するクラス
/// </summary>
public static class Rigidbody2DExtension {

  /// <summary>
  /// 一時停止
  /// </summary>
  public static void Pause(this Rigidbody2D rigidbody2D, GameObject gameObject){
    gameObject.AddComponent<Velocity2DTmp> ().Set(rigidbody2D);
    rigidbody2D.isKinematic = true;
  }

  /// <summary>
  /// 再開
  /// </summary>
  public static void Resume(this Rigidbody2D rigidbody2D, GameObject gameObject){
    if(gameObject.GetComponent<Velocity2DTmp> () == null){
      return;
    }

    rigidbody2D.velocity        = gameObject.GetComponent<Velocity2DTmp>().Velocity;
    rigidbody2D.angularVelocity = gameObject.GetComponent<Velocity2DTmp>().AngularVelocity;
    rigidbody2D.isKinematic     = false;

    GameObject.Destroy (gameObject.GetComponent<Velocity2DTmp> ());
  }

}  

RigidbodyExtension.cs

//  RigidbodyExtension.cs
//  http://kan-kikuchi.hatenablog.com/entry/Pause_Resume
//
//  Created by kan kikuchi on 2015.11.26.

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


//一時停止時の速度を保管するクラス
public class VelocityTmp : MonoBehaviour{
  //一時停止時の速度
  private Vector3   _angularVelocity;
  private Vector3 _velocity;

  public Vector3 AngularVelocity{
    get{return _angularVelocity;}
  }
  public Vector3 Velocity{
    get{return _velocity;}
  }

  /// <summary>
  /// Rigidbody2Dを入力して速度を設定する
  /// </summary>
  public void Set(Rigidbody rigidbody){
    _angularVelocity = rigidbody.angularVelocity;
    _velocity        = rigidbody.velocity;
  }

}

/// <summary>
/// Rigidbody 型の拡張メソッドを管理するクラス
/// </summary>
public static class RigidbodyExtension {

  //一時停止時の速度
  private static Vector3 _angularVelocity;
  private static Vector3 _velocity;

  /// <summary>
  /// 一時停止
  /// </summary>
  public static void Pause(this Rigidbody rigidbody, GameObject gameObject){
    gameObject.AddComponent<VelocityTmp> ().Set(rigidbody);
    rigidbody.isKinematic = true;
  }

  /// <summary>
  /// 再開
  /// </summary>
  public static void Resume(this Rigidbody rigidbody, GameObject gameObject){
    if(gameObject.GetComponent<VelocityTmp> () == null){
      return;
    }

    rigidbody.velocity        = gameObject.GetComponent<VelocityTmp>().Velocity;
    rigidbody.angularVelocity = gameObject.GetComponent<VelocityTmp>().AngularVelocity;
    rigidbody.isKinematic     = false;

    GameObject.Destroy (gameObject.GetComponent<VelocityTmp> ());
  }

}