SRL Archive - OSR Help

Why does this work:

function WalkTowardTile(T : TTile) : Boolean; //Note, its T : TTile, not var T : TTile
var
  Ti, Me : TTile;
  Tr, tx, ty : Integer;
begin
  if not LoggedIn then
    Exit;
  Tr := 0;
  Debug('Can''t find next tile. Trying to walk closer.');
  while not TileOnMM(T) do
  begin
    Me := GetMe.Tile;
    tx := (T.x - Me.x)/2 + Me.x;
    ty := (T.y - Me.y)/2 + Me.y;
    Ti := Tile(tx, ty);
    if TileOnMM(Ti) then
      WalkToTile(Ti, 3, 1)
    else
      T := Ti; //I reset the parameter T
    if Tr > 5 then
    begin
      Result := False;
      Exit;
    end;
  end;
  Result := True;
end;

I want to know because I've been having problems with my miner & banker lately and I think this may be the issue. The script runs great for awhile, then crashes with a black SMART screen after awhile.

Can anyone explain to me what exactly is going on when this happens (resetting a parameter in a function like shown above)? I always thought it'd give a compiler error.

Why don't you just add a new variable (A TTile) and set NewTile := Ti, then use it from there?

From: TomTuff
Why don't you just add a new variable (A TTile) and set NewTile := Ti, then use it from there?

Thanks, I intend to do that later.

I'd really like to know what's going on though, just for the sake of knowing. I guess it just irks me to not know why something works when it shouldn't. ;)

From: doom0791
Thanks, I intend to do that later.

I'd really like to know what's going on though, just for the sake of knowing. I guess it just irks me to not know why something works when it shouldn't. ;)

It shouldn't, but it still happens, thus why it's a bug.