unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls;

type
  TForm1 = class(TForm)
    screen: TPaintBox;
    startstopbtn: TButton;
    procedure startstopbtnClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
 isrunning: Boolean;
implementation

{$R *.dfm}

procedure TForm1.startstopbtnClick(Sender: TObject);
const width=100;
height=90;
var x,y :Integer;
rx,ry :Integer;
field :array [0..width+1,0..height +1] of Boolean;
changes :array [0..width + 1,0..height +1] of Boolean;
s,i,j:Integer;
begin
 if isrunning then
 begin
   isrunning :=False;
 startstopbtn. Caption :='ПУСК';
 Exit;
 end;
 STARTSTOPBTN.caption:='стоп';
 isrunning:=True;
 rx:=(screen.width div width)div 2;
 ry:= (screen.height div height )div 2;
 Randomize;
 Screen.refresh;
 for i :=0 to width + 1 do
 for j :=0 to height +1 do
 begin
   field[i,j] := False;
   changes[i,j] :=False;
   end;
 for i := 1 to width do
 for j :=1 to height do
 if Random(4)=0 then
 begin
 field[i,j] := True;
 screen.Canvas.Ellipse((2*i-1)*rx - rx, (2*j - 1 )*ry - ry,
 (2*i-1)*rx + rx , (2*j-1)*ry+ry);
  end;
   while isrunning do
   begin
     for i := 1 to width do
     for j := 1 to height do
     begin
       if field [i,j] then
       Screen.canvas.pen.color := clblue
       else screen.canvas.pen.color:=clbtnface;
       Screen.canvas. Ellipse((2*i - 1)*rx-rx,(2*j-1)*ry-ry,
       (2*i-1)*rx+rx,(2*j - 1 )*ry + ry);
       end;
       for x := 1 to width do
       for y  :=1 to height do
       begin
         s:=0;
         for i:=-1to 1 do
         for j := -1 to 1 do
         s:=s + ord(field [x +i] [y+j]);
         s:=s - ord (field [x][y]);
         if((field[x,y] = False) and (s=3)) or
         ((field[x,y] = True) and ((s<2) or (s>3)))then
         changes[x,y]:= True;
         end;
         for x:=1 to width do
         for y:=1 to height do
         if changes [x,y] then
         begin
           field[x,y]:=not field[x,y];
           changes[x,y]:= False;
           end;
           sleep(100);
           application.processmessages;
         end;
       end;
end.