There is an error in the physical material update function

[LuciferTC9527]

The current physics material update function UpdateSurfaceFriction has a bug that incorrectly applies the previous material.

Temporary fix,Replace the previous UpdateSurfaceFriction function:

void UPBPlayerMovement::UpdateSurfaceFriction(bool bIsSliding)
{
        if (!IsFalling() && CurrentFloor.IsWalkableFloor())
        {
            bSlidingInAir = false;
            FHitResult Hit;
            TraceCharacterFloor(Hit);
            float NewSurfaceFriction = GetFrictionFromHit(Hit);
            
            if (!FMath::IsNearlyEqual(SurfaceFriction, NewSurfaceFriction, 0.01f))
            {
                SurfaceFriction = NewSurfaceFriction;
                OldBase = CurrentFloor.HitResult.GetComponent();
            }
        }
	else
	{
		bSlidingInAir = bIsSliding;
		const bool bPlayerControlsMovedVertically = IsOnLadder() || Velocity.Z > JumpVelocity || Velocity.Z <= 0.0f || bCheatFlying;
		if (bPlayerControlsMovedVertically)
		{
			SurfaceFriction = 1.0f;
		}
		else if (bIsSliding)
		{
			SurfaceFriction = 0.25f;
		}
	}
}

[mastercoms]

Hi, thanks for the report. Could you explain a case where the previous function would be incorrect?

[LuciferTC9527]

Replace the physical material of one of the two surfaces with the ice provided by the engine, and jump after running the material with ice. The friction force of the character will return to the default friction force. If you walk to the other default physical material surface at this time, the friction force of the character will return to ice