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perf: PredictedRigidbody MoveTowardsCustom

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This commit is contained in:
mischa 2024-03-15 13:00:43 +08:00
parent 3daa3db8a4
commit e7e02c6662
2 changed files with 26 additions and 1 deletions
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26
Assets/Mirror/Components/PredictedRigidbody/PredictedRigidbody.cs
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@ -347,7 +347,31 @@ protected virtual void SmoothFollowPhysicsCopy()
// sooner we need to catch the fuck up
// float positionStep = (distance * distance) * interpolationSpeed;
float positionStep = distance * positionInterpolationSpeed;
Vector3 newPosition = Vector3.MoveTowards(currentPosition, physicsPosition, positionStep * deltaTime);
// simple and slow version with MoveTowards, which recalculates delta and delta.sqrMagnitude:
// Vector3 newPosition = Vector3.MoveTowards(currentPosition, physicsPosition, positionStep * deltaTime);
// faster version copied from MoveTowards:
// this increases Prediction Benchmark Client's FPS from 615 -> 640.
[MethodImpl(MethodImplOptions.AggressiveInlining)]
static Vector3 MoveTowardsCustom(
Vector3 current,
Vector3 target,
Vector3 _delta, // pass this in since we already calculated it
float _sqrDistance, // pass this in since we already calculated it
float _distance, // pass this in since we already calculated it
float maxDistanceDelta)
{
if (_sqrDistance == 0.0 || maxDistanceDelta >= 0.0 && _sqrDistance <= maxDistanceDelta * maxDistanceDelta)
return target;
return new Vector3(
current.x + (_delta.x / _distance) * maxDistanceDelta,
current.y + (_delta.y / _distance) * maxDistanceDelta,
current.z + (_delta.z / _distance) * maxDistanceDelta);
}
Vector3 newPosition = MoveTowardsCustom(currentPosition, physicsPosition, delta, sqrDistance, distance, positionStep * deltaTime);
// smoothly interpolate to the target rotation.
// Quaternion.RotateTowards doesn't seem to work at all, so let's use SLerp.

1
Assets/Mirror/Examples/BenchmarkPrediction/Readme.md
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@ -19,3 +19,4 @@ Predicted:
2024-03-13: 580 FPS Client, 1700 FPS Server // micro optimizations
2024-03-14: 590 FPS Client, 1700 FPS Server // UpdateGhosting() every 4th frame
2024-03-14: 615 FPS Client, 1700 FPS Server // predictedRigidbodyTransform.GetPositionAndRotation()
2024-03-15: 625 FPS Client, 1700 FPS Server // Vector3.MoveTowardsCustom()