koobas.hobune.stream
Lerping from one position to another not working
Hi, Im trying to lerp from pos A to pos B or from pos B to pos A, literally moving the gameobject back and forth whenever i press a button. But whenever i press the space key, nothing happens. Can someone please help me out, im not sure what's gone wrong.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class PlayerMovement : MonoBehaviour {
// Transforms to act as start and end markers for the journey.
public Transform startMarker;
public Transform endMarker;
public Transform[] points;
public int activePoint = 0;
// Movement speed in units/sec.
public float speed = 1.0F;
// Time when the movement started.
private float startTime;
// Total distance between the markers.
private float journeyLength;
void Awake()
{
endMarker = points [activePoint];
// Keep a note of the time the movement started.
startTime = Time.time;
// Calculate the journey length.
journeyLength = Vector3.Distance(startMarker.position, endMarker.position);
}
// Follows the target position like with a spring
void Update()
{
endMarker = points [activePoint].transform;
// Distance moved = time * speed.
float distCovered = (Time.time - startTime) * speed;
// Fraction of journey completed = current distance divided by total distance.
float fracJourney = distCovered / journeyLength;
// Set our position as a fraction of the distance between the markers.
if (Input.GetKey (KeyCode.Space))
{
if (activePoint == 0)
{
activePoint = 1;
}
if (activePoint == 1)
{
activePoint = 0;
}
}
transform.position = Vector3.Lerp (startMarker.position, endMarker.position, fracJourney);
}
}
@arjuniscool0204 - I already answered, but your question is incorrectly formatted, code block does not contain all your code...
Hi @arjuniscool0204
Lerping between points has been asked many times IIRC, so use these as example.
Here one solution: https://answers.unity.com/questions/730755/lerp-between-two-vectors.html
You might be better off by moving your movement code to coroutine; this way you don't have to check anything while object is moving - let your object go from a to b, then swap the targets at the end of coroutine.
In your update:
void Update()
{
if (Input.GetKeyDown(KeyCode.Space) && canStart)
{
Debug.Log("Started");
canStart = false;
StopAllCoroutines();
StartCoroutine(MoveTo());
}
}
Your coroutine:
IEnumerator MoveTo()
{
// While not there, move
while (fraction < 1)
{
fraction += Time.deltaTime * speed;
transform.position = Vector3.Lerp(start, des, fraction);
yield return null;
}
// done, cleanup and swap targets
fraction = 0f;
canStart = true;
var tmp = des;
des = start;
start = tmp;
}
Thank you so much man. I managed to make it work now!! You saved my 2 wasteful hours of stress coding.
