koobas.hobune.stream
Why is my Mathf.Lerp not lasting for the intended duration, even though I'm not using Time.time as the t variable?
just figured this out myself but hadn't found a direct answer here so I thought I'd share for other people making the same mistake. I'll post the answer myself if it gets approved in the moderation queue.*
Why is my Lerp not lasting the intended duration?
using UnityEngine;
using System.Collections;
public class TestingLerpScript : MonoBehaviour {
void Start(){
StartCoroutine(LerpCoroutine(10f, 5f, 0.05f));
}
IEnumerator LerpCoroutine(float finalX, float duration, float marginOfError){
Debug.Log (duration);
float startTime = Time.time;
float currentX = 0f;
while( (currentX != finalX) && (Mathf.Abs(finalX-currentX))>marginOfError)
{
float localTime = Time.time-Time.deltaTime - startTime;
float percentCovered = localTime/duration;
currentX = Mathf.Lerp (currentX, finalX, percentCovered);
yield return null;
}
Debug.Log(Time.time-startTime);
}
}
Thank You.
Best Answer
The problem is you're using currentX as a starting position each time the Lerp is called, but the starting position should remain the same. This is what it should be instead:
float startTime = Time.time;
float startX = 0f;
float currentX = startX;
while( (currentX != finalX) && (Mathf.Abs(finalX-currentX))>marginOfError)
{
float localTime = Time.time-Time.deltaTime - startTime;
float percentCovered = localTime/duration;
//currentX = Mathf.Lerp (currentX, finalX, percentCovered);
currentX = Mathf.Lerp (startX, finalX, percentCovered);
yield return null;
}
