Function MultiDoAdjustPosition

Descent3/multi.cpp:8863–8947

The server is telling me to adjust my position

// The server is telling me to adjust my position
void MultiDoAdjustPosition(uint8_t *data) {
  int count = 0;
  SKIP_HEADER(data, &count);

  float timestamp = MultiGetFloat(data, &count);

  vector newpos, newvel;

  // memcpy (&newpos,&data[count],sizeof(vector));
  // count+=sizeof(vector);
  newpos = MultiGetVector(data, &count);
  // memcpy (&newvel,&data[count],sizeof(vector));
  // count+=sizeof(vector);
  newvel = MultiGetVector(data, &count);

  int roomnum = MultiGetInt(data, &count);

  object *obj = &Objects[Players[Player_num].objnum];

  ObjSetPos(obj, &newpos, roomnum, &obj->orient, true);
  obj->mtype.phys_info.velocity = newvel;

  float save_frametime = Frametime;
  int start_move = -1, end_move = -1;

  // Now go through and adjust our position based on our saved moves
  for (int i = 0; i < MAX_SAVED_MOVES; i++) {
    int next = i + 1;
    int prev = i - 1;

    if (next == MAX_SAVED_MOVES)
      next = 0;
    if (prev == -1)
      prev = MAX_SAVED_MOVES - 1;

    if (start_move == -1 && SavedMoves[prev].timestamp < timestamp && SavedMoves[i].timestamp >= timestamp)
      start_move = i;
    if (end_move == -1 && SavedMoves[i].timestamp >= timestamp && SavedMoves[next].timestamp < timestamp)
      end_move = i;
  }

  ASSERT(start_move != -1); // HUH?  We don't have a copy of this move in our list
  ASSERT(end_move != -1);

  int cur_move = start_move;
  int done = 0;

  vector save_thrust, save_rotthrust;
  save_thrust = obj->mtype.phys_info.thrust;
  save_rotthrust = obj->mtype.phys_info.rotthrust;

  while (!done) {
    int next = cur_move + 1;
    int next_end = end_move + 1;

    if (next == MAX_SAVED_MOVES)
      next = 0;