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| unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls;
type
TForm1 = class(TForm)
PaintBox1: TPaintBox;
Timer1: TTimer;
procedure Timer1Timer(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
private
{ Déclarations privées }
public
{ Déclarations publiques }
end;
TFlocon = class
x, y, vitesse : integer;
constructor Create(px, py, pvitesse : integer);
end;
var
Form1: TForm1;
flocons : array[1..500] of TFlocon;
implementation
{$R *.dfm}
{ TFlocon }
constructor TFlocon.Create(px, py, pvitesse: integer);
begin
x := px;
y := py;
vitesse := pvitesse;
end;
{ TForm1 }
procedure TForm1.FormCreate(Sender: TObject);
var
i : integer;
begin
for i := low(flocons) to high(flocons) do
flocons[i] := TFlocon.Create(random(paintbox1.Width),random(paintbox1.Height),random(3));
end;
procedure TForm1.FormDestroy(Sender: TObject);
var
i : integer;
begin
for i := low(flocons) to high(flocons) do
flocons[i].Free;
end;
procedure TForm1.Timer1Timer(Sender: TObject);
var
i : integer;
begin
with paintbox1 do
begin
Canvas.FillRect(ClientRect);
for i := low(flocons) to high(flocons) do
begin
flocons[i].x := flocons[i].x + 1 - random(3);
flocons[i].y := flocons[i].y + 1 + flocons[i].vitesse;
Canvas.MoveTo(flocons[i].x,flocons[i].y);
Canvas.LineTo(flocons[i].x+1,flocons[i].y+1);
if (flocons[i].y > paintbox1.Height) then
begin
flocons[i].x := random(paintbox1.Width);
flocons[i].y := 0;
end;
end;
end;
end;
end. |
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