[Quantum]

You forgot to forward it:

pawn Код:

forward IsAtDeMorgan();

Also you forgot the semicolon.

"SetPlayerControllable" doesn't exists, it's TogglePlayerControllable.

To fix the error 017, use this:

pawn Код:

public DeMorganFreeze()
{
  for(new i = 0; i < MAX_PLAYERS; i++)
  {
    SetPlayerControllable(i,true);
    GameTextForPlayer(i, "~g~ Loading Objects...", 5000, 6);
    PlayerPlaySound(i, 1145, 0.0, 0.0, 0.0);
    SendClientMessage(i,COLOR_GREY, " Welcome to Fort DeMorgan");
  }
  return 1;
}

Also if(IsPlayerInRangeOfPoint(i,177.4720,1894.8317,114 9.6217)) is wrong, it should have a range, I recommend you to use the wiki: https://sampwiki.blast.hk/wiki/IsPlayerInRangeOfPoint

And I don't know how to fix the warning 203, you may try to remove the "PlayerPos" thing, since is never used.