ScoreBoard StopWatch

[Andry 0]

Hello all,
I'm trying to create a scoreboard, I need to use a stopwatch that can be paused and then resumed. I've already tried with a Timer, a TStopWatch but it's the Pause/Resume function that bothers me a bit.
Could you suggest me something for this feature.
Andry

[programmerdelphi2k 235]

@Andry

try some like this

implementation

{$R *.dfm}

uses
  System.DateUtils;

var
  LRigthEndTime  : TDateTime;
  LLeftEndTime   : TDateTime;
  LCurrentTime   : TDateTime;      // the start value...
  LDirectionTimer: boolean = true; // true = to right, false = to left
  LGameOver      : boolean = false;

procedure MyResetTimes;
begin
  //
  // define your initial values in some place...
  // just for my test in my OnCreate on form
  //
  Form1.Timer1.Enabled := false;
  //
  LCurrentTime  := now; // StrToDateTime('xx/xx/xxxx 00:00:00');
  LRigthEndTime := LCurrentTime;
  LLeftEndTime  := LCurrentTime;
  //
  LRigthEndTime.AddSecond(10); // StrToDateTime('xx/xx/xxxx 00:00:00');
  LLeftEndTime.AddSecond(-10); // StrToDateTime('xx/xx/xxxx 23:59:59');
  //
  // here, it's dependent of your direction usage:
  LGameOver := (LRigthEndTime <= LCurrentTime) { or (LLeftEndTime >= LCurrentTime) };
  //
  Form1.Memo1.Text := 'End Right: ' + TimeToStr(LRigthEndTime);
  Form1.Memo1.Lines.Add('End Left: ' + TimeToStr(LLeftEndTime));
  Form1.Label1.Caption := TimeToStr(LCurrentTime);
  Form1.Label2.Caption := DateTimeToStr(LCurrentTime);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  MyResetTimes;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
  procedure MyTimeIsOver(const AValue: smallint);
  begin
    LCurrentTime.AddSecond(AValue);
    if (AValue > 0) then
      Timer1.Enabled := not(LCurrentTime = LRigthEndTime)
    else
      Timer1.Enabled := not(LCurrentTime = LLeftEndTime);
    //
    LGameOver := Timer1.Enabled = false;
  end;

begin
  if LDirectionTimer then
    MyTimeIsOver(1)
  else
    MyTimeIsOver(-1);
  //
  Label1.Caption := TimeToStr(LCurrentTime);
  Label2.Caption := DateTimeToStr(LCurrentTime);
end;

procedure TForm1.BtnTimePLUSClick(Sender: TObject);
begin
  if LGameOver then
    exit;
  //
  LDirectionTimer := true;
  Timer1.Enabled  := not Timer1.Enabled;
end;

procedure TForm1.BtnTimeMINUSClick(Sender: TObject);
begin
  if LGameOver then
    exit;
  //
  LDirectionTimer := false;
  Timer1.Enabled  := not Timer1.Enabled;
end;

procedure TForm1.BtnResetTimesClick(Sender: TObject);
begin
  MyResetTimes;
end;

end.

 

Edited April 13, 2023 by programmerdelphi2k

[Minox 4]

To improve fluidity I would use a thread, so as to limit the pauses due to the execution of something else

[KodeZwerg 54]

I've added a very basic example project in hope that I've understand correct what you try to achieve.

Here are my basics shown as code:

procedure TForm1.btnStartClick(Sender: TObject);
begin
  FSec := SpinEdit1.Value;
  lblTime.Caption := IntToStr(FSec);
  Timer1.Enabled := True;
  btnPause.Enabled := True;
  btnStop.Enabled := True;
  btnStart.Enabled := False;
end;

procedure TForm1.btnPauseClick(Sender: TObject);
begin
  Timer1.Enabled := (not Timer1.Enabled);
end;

procedure TForm1.btnStopClick(Sender: TObject);
begin
  btnPause.Enabled := False;
  btnStop.Enabled := False;
  btnStart.Enabled := True;
  Timer1.Enabled := False;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  if (FSec > 0) then
    begin
      Dec(FSec, 1);
      lblTime.Caption := IntToStr(FSec);
    end
    else
      begin
        lblTime.Caption := IntToStr(FSec);
        Timer1.Enabled := False;
        btnPause.Enabled := False;
        btnStop.Enabled := False;
        btnStart.Enabled := True;
      end;
end;

(above code is slighty updated, attached archive does not contain latest modification from above)

timerStopwatch.zip

Edited April 14, 2023 by KodeZwerg