Question

Memory in a Class PROBLEM

Asked by: misterstefano

I had declared a class:
     
      TPlayer = class(TObject)
      public
        FCode: integer;
        FName: String;
        ...
      end;

I make a var:    var Players: array[1..1000] of TPlayer;         (memory for 1000 players of the class TPlayer)
                     Player: TPlayer;
How can I put different players in the array?

My code now is:
     
     with player do
     begin
       FCode:= StrToInt(CodeLabel.Caption);
       FName:= NameEdit.Text;
     end;
     Players[i]:=Player;             {i is a different place in the array}

When I do It like this way ALL the arrays are the same value (the last choosen one)

What's my mistake?

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Asked On
2003-04-28 at 09:06:22ID20598858
Topic

Delphi Programming

Participating Experts
2
Points
80
Comments
3

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Answers

 

by: akaSurrealPosted on 2003-04-28 at 13:13:50ID: 8415193

I don't see anything obviously wrong with this code you have listed.  I suspect its a problem you have elsewhere.  By the way, you could save yourself a step by changing your "with" to

with Players[i] do
  your same code..
end;

This way you will not have to assign the
Players[i] := Player
or even have a need for that variable.

Mike

 

by: sgc_romaniaPosted on 2003-04-28 at 17:41:22ID: 8416489

I think you use a single instance of TPlayer class.
You defined an array of 1000 TPlayer objects, so you have to create 1000 TPlayer instances, then assign them to the array:

for i:=1 to 1000 do
begin
Player := TPlayer.Create;
    with player do
    begin
      FCode:= StrToInt(CodeLabel.Caption);
      FName:= NameEdit.Text;
    end;
    Players[i]:=Player;
end;

now you have an array with 1000 TPlayer objects and an object (Player) which points to Players[1000].
In order to avoid any problems:

Player := nil;

 

by: misterstefanoPosted on 2003-04-29 at 10:18:27ID: 8421636

;) I found the code by myself, but i think your code is also good. I give you the points for your reaction.

20120131-EE-VQP-002

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