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unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    ImReagenzglas: TImage;
    ImNa1: TImage;
    Timer1: TTimer;
    ImNa2: TImage;
    Schnell: TButton;
    Langsam: TButton;
    Stopp: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure SchnellClick(Sender: TObject);
    procedure LangsamClick(Sender: TObject);
    procedure StoppClick(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;
  vv, vh, n, p:integer;

implementation

{$R *.DFM}

procedure TForm1.FormCreate(Sender: TObject);
begin
ImNa1.canvas.ellipse(0,0,20,20);
ImReagenzglas.canvas.ellipse(400,400,380,380);
ImNa2.Canvas.ellipse(0,0,20,20);
n:=7;
p:=8;
vv:=5;
vh:=4;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
ImNa1.Top:=ImNa1.top+vv;
ImNa1.left:=ImNa1.left+vh;
ImNa2.top:=ImNa2.top+n;
ImNa2.left:=ImNa2.left+p;
if (ImNa1.top>200) then
vv:=-vv;
if (ImNa1.left>200) then
vh:=-vh;
if (ImNa1.top<20)  then
vv:=-vv;
if (ImNa1.left<20) then
vh:=-vh;
if (ImNa2.left>200) then
p:=-p;
if (ImNa2.top>200) then
n:=-n;
if (ImNa2.left<20) then
p:=-p;
if (ImNa2.top<20) then
n:=-n;
if ((ImNa1.Top+ImNa1.Height > ImNa2.Top) and (ImNa1.Top<ImNa2.top+ImNa2.Height))
and
  ((ImNa1.Left < ImNa2.Left+ImNa2.Width) and (ImNa1.Left+ImNa1.Width > ImNa2.Left)) then
   begin
vv:=-vv;
vh:=-vh;
 end;
end;