Interpolates a GameObject's position and rotation while being updated in FixedUpdate.
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using UnityEngine; | |
using System.Collections; | |
/// <summary> | |
/// Interpolates a GameObject's position and rotation while being updated in FixedUpdate. | |
/// </summary> | |
[DefaultExecutionOrder(-100)] | |
public class FixedUpdateInterpolation : MonoBehaviour | |
{ | |
private Vector3 pos0; | |
private Vector3 pos1; | |
private Quaternion rot0; | |
private Quaternion rot1; | |
private Vector3 lastUpdatePos; | |
private Quaternion lastUpdateRot; | |
private readonly WaitForFixedUpdate waitForFixedUpdate = new WaitForFixedUpdate(); | |
private void OnEnable() | |
{ | |
lastUpdatePos = pos0 = pos1 = transform.localPosition; | |
lastUpdateRot = rot0 = rot1 = transform.localRotation; | |
StartCoroutine(LateFixedUpdate()); | |
} | |
private void OnDisable() | |
{ | |
StopAllCoroutines(); | |
} | |
private void FixedUpdate() | |
{ | |
var pos = transform.localPosition; | |
if (pos == lastUpdatePos) | |
{ | |
transform.localPosition = pos1; | |
lastUpdatePos = pos1; | |
} | |
else | |
{ | |
AcceptUpdatedPosition(pos); | |
} | |
var rot = transform.localRotation; | |
if (rot == lastUpdateRot) | |
{ | |
transform.localRotation = rot1; | |
lastUpdateRot = rot1; | |
} | |
else | |
{ | |
AcceptUpdatedRotation(rot); | |
} | |
} | |
private IEnumerator LateFixedUpdate() | |
{ | |
while (true) | |
{ | |
yield return waitForFixedUpdate; | |
pos0 = pos1; | |
pos1 = transform.localPosition; | |
lastUpdatePos = pos1; | |
rot0 = rot1; | |
rot1 = transform.localRotation; | |
lastUpdateRot = rot1; | |
} | |
} | |
private void Update() | |
{ | |
var t = (Time.time - Time.fixedTime) / Time.fixedDeltaTime; | |
var pos = transform.localPosition; | |
if (pos == lastUpdatePos) | |
{ | |
var newPosition = Vector3.Lerp(pos0, pos1, t); | |
transform.localPosition = newPosition; | |
lastUpdatePos = newPosition; | |
} | |
else | |
{ | |
AcceptUpdatedPosition(pos); | |
} | |
var rot = transform.localRotation; | |
if (rot == lastUpdateRot) | |
{ | |
var newRotation = Quaternion.Lerp(rot0, rot1, t); | |
transform.localRotation = newRotation; | |
lastUpdateRot = newRotation; | |
} | |
else | |
{ | |
AcceptUpdatedRotation(rot); | |
} | |
} | |
private void AcceptUpdatedPosition(Vector3 pos) | |
{ | |
pos0 = pos1 = pos; | |
lastUpdatePos = pos; | |
} | |
private void AcceptUpdatedRotation(Quaternion rot) | |
{ | |
rot0 = rot1 = rot; | |
lastUpdateRot = rot; | |
} | |
} |
Thanks for sharing this, helped a lot!
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this script saved my bacon. thanks!