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| program lab;
uses graph,crt;
const
sfs=1;
type
krug=object
a,b,r,da,db,c:integer;
constructor init(x,y,l:integer);
procedure napr(dx,dy:integer);
procedure show; virtual;
procedure hide; virtual;
procedure rozm(dl:integer);
procedure move;
destructor done; virtual;
end;
kvadr=object(krug)
constructor init(x,y,l{,s}:integer);
procedure show; virtual;
procedure hide; virtual;
destructor done; virtual;
end;
var
grdriver,grmode:integer;
kr:krug;
kv:kvadr;
ch:char;
mmm:integer;
constructor krug.init;
begin
a:=x;
b:=y;
da:=0;
db:=0;
r:=l;
c:=2;
end;
procedure krug.napr;
begin
if dx<>0 then da:=da+dx;
if dy<>0 then db:=db+dy;
end;
procedure krug.rozm;
begin
hide;
r:=r+dl;
if r<1 then r:=1;
show;
end;
procedure krug.show;
begin
if c=getbkcolor then c:=c+1;
setcolor(c);
circle(a,b,r);
floodfill(a,b,c);
delay(10000);
end;
procedure krug.hide;
begin
setcolor(black);
setfillstyle(solidfill,black);
circle(a,b,r);
circle(a,b,r div 2);
floodfill(a,b,black);
end;
procedure krug.move;
begin
hide;
if a>=getmaxx-r
then
begin
da:=-da;
a:=getmaxx-r;
c:=random(15)
end;
if a<=r
then
begin
da:=-da;
a:=r;
c:=random(15)
end;
if b>=getmaxy-r
then
begin
db:=-db;
b:=getmaxy-r;
c:=random(15)
end;
if b<=r+50
then
begin
db:=-db;
b:=r+50;
c:=random(15)
end;
a:=a+da;
b:=b+db;
show;
end;
destructor krug.done;
begin
hide;
end;
constructor kvadr.init;
begin
a:=x;
b:=y;
da:=0;
db:=0;
r:=l;
{ c:=2; }
c:=round((sqrt(2))*r);
end;
procedure kvadr.show;
begin
if c=getbkcolor then c:=c+1;
setcolor(c);
rectangle(a-r,b-r,a+r,b+r);
rectangle(a-r div 2,b-r div 2,a+r div 2,b+r div 2);
floodfill(a,b,c);
delay(10000);
end;
procedure kvadr.hide;
begin
setcolor(black);
setfillstyle(solidfill,black);
rectangle(a-r,b-r,a+r,b+r);
rectangle(a-r div 2,b-r div 2,a+r div 2,b+r div 2);
floodfill(a,b,black);
end;
destructor kvadr.done;
begin
hide;
end;
begin
mmm:=0;
grdriver:=detect;
initgraph(grdriver,grmode,'');
kr.init(getmaxx div 2,getmaxy div 2,20);
kv.init(getmaxx div 2,getmaxy div 2,20);
outtextxy(10,10,'Hot keys: left,rigth,up,down');
outtextxy(10,20,' Page up,Page down');
outtextxy(10,30,' Tab,Esc');
kr.show;
mmm:=1;
while keypressed do ch:=readkey;
repeat
if mmm=1 then kr.move else kv.move;
if keypressed then
begin
ch:=readkey;
if (ch=#0) and (mmm=1) then
case readkey of
chr(73):kr.rozm(1);
chr(81):kr.rozm(-1);
chr(75):kr.napr(-1,0);
chr(77):kr.napr(1,0);
chr(72):kr.napr(0,-1);
chr(80):kr.napr(0,1);
end;
if (ch=#0) and (mmm=-1) then
case readkey of
chr(73):kv.rozm(1);
chr(81):kv.rozm(-1);
chr(75):kv.napr(-1,0);
chr(77):kv.napr(1,0);
chr(72):kv.napr(0,-1);
chr(80):kv.napr(0,1);
end;
end;
until ch=#27;
kr.done;
kv.done;
closegraph;
end. |
(
