unit Unit1;
 
interface
 
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, struct, ExtCtrls;
 
type
  TForm1 = class(TForm)
    Timer1: TTimer;
    procedure Timer1Timer(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure FormKeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
  private
    
  public
    
  end;
 
var
  Form1: TForm1;
  Snake   : TSnake;
  Buffer : TBitMap;
  posX: word;
implementation
 
{$R *.dfm}
 
procedure TForm1.Timer1Timer(Sender: TObject);
var i,j:integer;
    newx,newy:integer;
begin
PatBlt(Buffer.Canvas.Handle,
0,
0,
Buffer.Width,
Buffer.Height,
BLACKNESS);
 
for i:=1 to AMaxX do
for j:=1 to AMaxY do
if gameA[i,j]=-1 then begin
Buffer.Canvas.Rectangle(i*5,j*5,i*5+5,j*5+5);
end;
 
case Snake.Direction of
1: Snake.Move(Snake.First.X+1,Snake.First.Y);
2: Snake.Move(Snake.First.X,Snake.First.Y+1);
3: Snake.Move(Snake.First.X-1,Snake.First.Y);
4: Snake.Move(Snake.First.X,Snake.First.Y-1);
end;
 
Snake.Draw(Buffer.Canvas);
 
BitBlt(Form1.Canvas.Handle,0,0,Form1.Width,Form1.Height,Buffer.Canvas.Handle,0,0,SRCCOPY);
end;
 
procedure TForm1.FormCreate(Sender: TObject);
var i,j:integer;
begin
for i:=1 to AMaxX do
for j:=1 to AMaxY do
GameA[i,j]:=0;
 
Buffer:=TBitMap.Create;
Buffer.Width:=Form1.Width;
Buffer.Height:=Form1.Height;
 
Snake.Create(1,5,10,10,clYellow);
 
end;
 
procedure TForm1.FormDestroy(Sender: TObject);
begin
Snake.Destroy;
end;
 
procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
case key of
87: Snake.SetDirection(4);
68: Snake.SetDirection(1);
65: Snake.SetDirection(3);
83: Snake.SetDirection(2);
27: close;
32: Snake.Remove;
107: Snake.Add;
else Form1.Caption:=IntToStr(key);
end;
end;
end.