program ejemplo2;
uses crt,graph;
{$R+}
type
       sentido = (arr,aba,izq,der);
       burbuja = object
	     private
		color,fil,col:integer;
		tam:word;
	     public
	     	procedure ponColor(deQueColor:integer);virtual;
	     	function  tenColor:integer;virtual;
	     	procedure moverxy(x,y:integer);virtual;
	     	procedure mover(haciaDonde:sentido);virtual;
		procedure moverConPendiente(factorX,factorY,PixRecorridos:integer;signo:boolean);virtual;
		constructor creaBurbuja(coleur,filx,coly,size:integer);
		destructor  limpiaBurbuja(size,filx,coly:integer);
	      end;
	ptrBurbuja = ^burbuja;
{**************************************}
var
	B1,B2,B3,B4 : ptrBurbuja;
	fondo,gd,gm,i,j:integer;
	{******************************************************************}
	constructor burbuja.creaBurbuja(coleur,filx,coly,size:integer);
	  begin
		color:=coleur;
		setColor(color);
		fil:=filx;
		col:=coly;
		tam:=size;
		circle(fil,col,tam);
	end;
	destructor burbuja.limpiaBurbuja;
	  begin
		setColor(fondo);
		circle(fil,col,tam);
	end;
	procedure burbuja.ponColor(deQueColor:integer);
	    begin
		color:=deQueColor
	end;
	function burbuja.tenColor:integer;
	    begin
		tenColor:=color
	end;
	procedure burbuja.moverxy(x,y:integer);
	    begin
		SetColor(fondo);
		circle(fil,col,tam);
		fil := x;
		col := y;
		SetColor(color);
		circle(fil,col,tam);
	end;
 
      procedure burbuja.moverConPendiente(factorX,factorY,PixRecorridos:integer;signo:boolean);
	var i:integer;
	begin
		for i:=1 to pixRecorridos do
		 begin
		     setColor(fondo);
		     circle(fil,col,tam);
		     setColor(color);
		    if(signo) then
			begin
		           fil := fil + factorX;
			   col := col + factorY;
			   circle(fil,col,tam);
			end
		     else
			begin
		     	    fil := fil - factorX;
			   col := col  - factorY;
			   circle(fil,col,tam)
		     end;
                     delay(50);
		 end;
	end;
      procedure burbuja.mover(haciaDonde:sentido);
	 var a:String[10];
	 begin
		SetColor(fondo);
		str(fil,a);
 
		circle(fil,col,tam);
		if(haciaDonde=der) then
		   fil := fil+1;
		if(haciaDonde=izq) then
		   fil := fil-10;
		if(haciaDonde=aba) then
		   col := col+10;
		if(haciaDonde=arr) then
		   col := col-10;
		SetColor(color);
		str(fil,a);
		circle(fil,col,tam);
	end;
PROCEDURE MAPA;
    begin
	SetColor(green);
end;
BEGIN
   gd:=Detect;
   InitGraph(gd,gm,'C:lenguaBGI');
   if GraphResult <> GrOk then halt(1);
   fondo:=white;
   setBKcolor(fondo);
   mapa;
   new(B1,creaBurbuja(yellow,200,100,50));
   {B1.creaBurbuja(yellow,200,100,50);}
   readkey;
   B1^.mover(aba);
   readkey;
   new(B2,creaBurbuja(red,200,200,50));
   {B2.creaBurbuja(red,200,200,50);}
   readkey;
   for i := 1 to 200 do
     BEGIN
	 DELAY(15);
	 B2^.mover(der)
     END;
   B2^.moverConPendiente(3,4,200,false);
   readkey;
   dispose(B1);
   dispose(B2);
END.