графика, помогите сделать движение Опции

[-lamer-]

вот моя прога , помогите плз сделать в ней движение рандомное этой фигуры и моргание каждой части квадрата пожалуйста !

Uses Graph,crt;
VAR
	x1, y1, x2, y2:integer;
	GraphDriver,GraphMode:integer;
procedure L(x1, y1, x2, y2:word);
	begin
		SetColor(17);
		Line (x1, y1, x2, y2);
	end;
Begin
        randomize;
	GraphDriver:=detect;
	InitGraph(GraphDriver, GraphMode, '');
        repeat
        delay(49999);
	SetBkColor(random(16));

	x1:=200;	y1:=100;	x2:=500;	y2:=100;		L (x1, y1, x2, y2);
	x1:=500;	y1:=100; 	x2:=500;	y2:=400;		L (x1, y1, x2, y2);
	x1:=500;	y1:=400; 	x2:=200;	y2:=400;		L (x1, y1, x2, y2);
	x1:=200; 	y1:=400; 	x2:=200;	y2:=100;		L (x1, y1, x2, y2);
	x1:=200; 	y1:=250; 	x2:=350;	y2:=100; 		L (x1, y1, x2, y2);
	x1:=350; 	y1:=100; 	x2:=500;	y2:=250; 		L (x1, y1, x2, y2);
	x1:=500;	y1:=250; 	x2:=350;	y2:=400; 		L (x1, y1, x2, y2);
	x1:=350;	y1:=400; 	x2:=200;	y2:=250;		L (x1, y1, x2, y2);
	x1:=275; 	y1:=250; 	x2:=350;	y2:=175;		L (x1, y1, x2, y2);
        x1:=275; 	y1:=250; 	x2:=350;	y2:=325;		L (x1, y1, x2, y2);
        x1:=350; 	y1:=325; 	x2:=425;	y2:=250;		L (x1, y1, x2, y2);
        x1:=425; 	y1:=250; 	x2:=350;	y2:=175;		L (x1, y1, x2, y2);
        x1:=200; 	y1:=175; 	x2:=275;	y2:=175;		L (x1, y1, x2, y2);
        x1:=275; 	y1:=175; 	x2:=275;	y2:=100;                L (x1, y1, x2, y2);
        x1:=425; 	y1:=100; 	x2:=425;	y2:=175;		L (x1, y1, x2, y2);
        x1:=425; 	y1:=175; 	x2:=500;	y2:=175;                L (x1, y1, x2, y2);
        x1:=200; 	y1:=325; 	x2:=275;	y2:=325;		L (x1, y1, x2, y2);
        x1:=275; 	y1:=325; 	x2:=275;	y2:=400;                L (x1, y1, x2, y2);
        x1:=425; 	y1:=400; 	x2:=425;	y2:=325;		L (x1, y1, x2, y2);
        x1:=425; 	y1:=325; 	x2:=500;	y2:=325;                L (x1, y1, x2, y2);



        until KeyPressed;
        read(x1);
	CloseGraph;
End.