Function accel

Engine/source/T3D/player.cpp:3630–3636

// PATHSHAPE END

static void accel(F32& from, F32 to, F32 rate)
{
   if (from < to)
      from = getMin(from += rate, to);
   else
      from = getMax(from -= rate, to);
}

// if (dt == -1)
//    normal tick, so we advance.