Error in the total time needed to translate a GameObject

Questions & Answers
1

Hi there,

I’m translating a GameObject one unit length. By the physics formula it should takes one second.

175836-eq16avev.gif

Here’s the code

public class Testing : MonoBehaviour
{
	[Tooltip("In units per second")]
	public Vector2 displacement;

	float currentTime;

	Stopwatch sw = new Stopwatch();

	// Start is called before the first frame update
	void Start()
	{
		currentTime = 0;
		sw.Start();
	}

	// Update is called once per frame
	void Update()
	{
		if (currentTime >= 1.0f)
		{
			sw.Stop();
			UnityEngine.Debug.Log($"Time to translate: {sw.ElapsedMilliseconds}");
			return;
		}

		Vector2 currentPos = transform.position;
		var nextPos = currentPos + (displacement * Time.deltaTime);

		transform.position = nextPos;

		currentTime += Time.deltaTime;
	}
}

when currentTime counter reach 1 the GameObject is indeed in the expected position so I thought everything was fine but I added a Stopwatch to measure the time it takes and for my surprise it is 1324 milliseconds.

Can anyone please give me some clue about why is this happening?

Thank you

2

Maybe, instead of starting your sw on start, start it in the update if currentTime == 0.

     void Start()
     {
         currentTime = 0;
     }
 
     // Update is called once per frame
     void Update()
     {
         if (currentTime == 0)
         {
              sw.Start();
         }

         if (currentTime >= 1.0f)
         {
             sw.Stop();
             UnityEngine.Debug.Log($"Time to translate: {sw.ElapsedMilliseconds}");
             return;
         }
 
         Vector2 currentPos = transform.position;
         var nextPos = currentPos + (displacement * Time.deltaTime);
 
         transform.position = nextPos;
 
         currentTime += Time.deltaTime;
     }