/// <summary>
/// SV_UserFriction
/// </summary>
static void UserFriction()
{
float speed = Mathlib.LengthXY(ref _Player.v.velocity);
if (speed == 0)
{
return;
}
// if the leading edge is over a dropoff, increase friction
Vector3 start, stop;
start.X = stop.X = _Player.v.origin.x + _Player.v.velocity.x / speed * 16;
start.Y = stop.Y = _Player.v.origin.y + _Player.v.velocity.y / speed * 16;
start.Z = _Player.v.origin.z + _Player.v.mins.z;
stop.Z = start.Z - 34;
trace_t trace = Move(ref start, ref Common.ZeroVector, ref Common.ZeroVector, ref stop, 1, _Player);
float friction = _Friction.Value;
if (trace.fraction == 1.0)
{
friction *= _EdgeFriction.Value;
}
// apply friction
float control = speed < _StopSpeed.Value ? _StopSpeed.Value : speed;
float newspeed = (float)(speed - Host.FrameTime * control * friction);
if (newspeed < 0)
{
newspeed = 0;
}
newspeed /= speed;
Mathlib.VectorScale(ref _Player.v.velocity, newspeed, out _Player.v.velocity);
}
