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unity > System.DateTime > 現在のmsecを取得する実装

Last updated at Posted at 2015-09-13
動作確認
Unity 5.1.3-f1 on MacOS X 10.8.5

System.DateTimeを普通に使う限りはミリ秒の値は取れないようだ。

http://stackoverflow.com/questions/4016483/get-time-in-milliseconds-using-c-sharp
のJosua Schmidさんの投稿を元に実装してみた。
もともとはJan1St1970 を使っていたが、Nowから生成するnowMsec0を使えばよさそう。

CheckMsec.cs
using UnityEngine;
using System.Collections;

using System;

public class CheckMsec : MonoBehaviour {

	long get_msec() {
		System.DateTime now = System.DateTime.Now;
		System.DateTime nowMsec0 = new DateTime (now.Year, now.Month, now.Day, now.Hour, now.Minute, now.Second);
		long TotalMsec = (long)((DateTime.Now - nowMsec0).TotalMilliseconds);

		return TotalMsec;
	}

	void Start () {
		StartCoroutine("WaitCoRoutine");
	}

	private IEnumerator WaitCoRoutine() {
		for (int idx=0; idx<4; idx++) {
			yield return new WaitForSeconds(0.3f); // every 300 msec

			long msec = get_msec ();
			Debug.Log ("msec=" + msec.ToString ());
		}
	}
}

コルーチンを使って300msecのwaitをつけている。

下記が実行例。
(552-236)msecで300msecプラスアルファの処理になっているのが分かる。

Untitled_-150913-nowMsec-PC__Mac___Linux_Standalone__Personal.jpg

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