public static void SV_UserFriction()
{
float speed = Mathlib.LengthXY(ref sv_player.v.velocity);
if (speed == 0)
{
return;
}
// if the leading edge is over a dropoff, increase friction
Vector3 start, stop;
start.X = stop.X = sv_player.v.origin.x + sv_player.v.velocity.x / speed * 16;
start.Y = stop.Y = sv_player.v.origin.y + sv_player.v.velocity.y / speed * 16;
start.Z = sv_player.v.origin.z + sv_player.v.mins.z;
stop.Z = start.Z - 34;
trace_t trace = SV_Move(ref start, ref q_shared.ZeroVector, ref q_shared.ZeroVector, ref stop, 1, sv_player);
float friction = sv_friction.value;
if (trace.fraction == 1.0)
{
friction *= edgefriction.value;
}
// apply friction
float control = speed < sv_stopspeed.value ? sv_stopspeed.value : speed;
float newspeed = (float)(speed - host_framtime * control * friction);
if (newspeed < 0)
{
newspeed = 0;
}
newspeed /= speed;
Mathlib.VectorScale(ref sv_player.v.velocity, newspeed, out sv_player.v.velocity);
}