Uses CRT,Graph;
Var
 C         :char;
 W         : word;
 Dir, b, e : byte;
 Num       : integer;
 en        : array [1..2] of byte;
 bg        : array [1..2] of byte;
 a         : array [1..79, 1..24] of integer;
 i,j,k     : byte;
{-----------------======================-----------------}
Procedure Apple;
Var i,j,k,b1,b2 : byte;
begin
  randomize;
  repeat
    i := random(77);
    j := random(24);
    k := random(9);
  until (i > 2) and (i < 78) and (j > 2 ) and (j < 22)
  and (k <> 0) and (a[i,j] = 0);
  b1 := WhereX;
  b2 := WhereY;
  GotoXY(i,j);
  Write(k);
  a[i,j] := - k;
  GotoXY(b1,b2);
end;
{-------------------------------------------------------}
Procedure Ext;
var Gd, Gm :integer;
begin
  {Sound(100);
  Delay(2000);
  Nosound;}
  Gd := Detect;
  InitGraph(Gd, Gm, '');
  if GraphResult <> grOk then Halt(1);
  ClearDevice;
  SetColor(Magenta);
  SetTextStyle(TriplexFont, HorizDir,10);
  OutTextXY(150,100,'Game');
  OutTextXY(170,200,'OveR');
  ReadKey;
  CloseGraph;
  Halt
end; {Ext}
{-------------------------------------------------------}
Procedure StartUp;
var
  Gd, Gm : Integer;
begin
  Gd := Detect;
  InitGraph(Gd, Gm, '');
  if GraphResult <> grOk then Halt(1);
  ClearDevice;
  SetColor(Blue);
  SetTextStyle(3, HorizDir,8);
  OutTextXY(80,100,'Game Piton');
  SetColor(White);
  SetTextStyle(1,HorizDir,2);
  OutTextXY(200,450,'///Press any key\\\');
  ReadKey;
  CloseGraph
end; {StartUp}
{------------------==================-------------------}
Procedure Game;
begin
  ClrScr;
  for i := 1 to 79 do
    for j := 1 to 24 do
      a[i,j] := 0;
  e := 1;
  en[1] := 39;
  en[2] := 13;
  Num := 1;
  Dir := 1;
  b := 10;
  a[39,13] := 1;
  GotoXY(40,13);
  repeat
    if keypressed then
      begin
        c := readkey;
        if c = #0 then
          Begin
            w := ord(readkey);
            case w of
            77 : case dir of
                   1 : begin
                         if a[whereX,WhereY] > 0 then ext;
                         Write('╗');
                         Num := num + 1;
                         a[WhereX-1,WhereY] := Num;
                         dir := 2
                       end;
                   2 : begin
                         if a[whereX-1,WhereY+1] > 0 then ext;
                         GotoXY(WhereX-1,WhereY+1);
                         Write('╝');
                         Num := num + 1;
                         a[WhereX-1,WhereY] := Num;
                         dir := 3;
                       end;
                   3 : begin
                         if a[whereX-2,WhereY] > 0 then ext;
                         GotoXY(WhereX-2,WhereY);
                         Write('╚');
                         Num := num + 1;
                         a[WhereX-1,WhereY] := num;
                         Dir := 4
                       end;
                   4 : begin
                         if a[whereX-1,WhereY-1] > 0 then ext;
                         GotoXY(WhereX-1,WhereY-1);
                         Write('╔');
                         Num := num + 1;
                         a[WhereX-1,WhereY] := Num;
                         Dir := 1
                       end;
                   end;
            75 : case dir of
                   1 : begin
                         if a[whereX,WhereY] > 0 then ext;
                         Write('╝');
                         num := num +1;
                         a[WhereX-1,WhereY] := Num ;
                         dir := 4
                       end;
                   2 : begin
                         if a[whereX-1,WhereY+1] > 0 then ext;
                         GotoXY(WhereX-1,WhereY + 1);
                         Write('╚');
                         Num := num + 1;
                         a[WhereX-1,WhereY] := Num;
                         dir := 1;
                       end;
                   3 : begin
                         if a[whereX-2,WhereY] > 0 then ext;
                         GotoXY(WhereX-2,WhereY);
                         Write('╔');
                         num := num + 1;
                         a[WhereX-1,WhereY] := num;
                         Dir := 2
                       end;
                   4 : begin
                         if a[whereX-1,WhereY-1] > 0 then ext;
                         GotoXY(WhereX-1,WhereY - 1);
                         Write('╗');
                         num := num + 1;
                         a[WhereX-1,WhereY] := num ;
                         Dir := 3
                        end;
                 end;
            27 : ext
            end;
          end;
      end
    else
      begin
        case dir of
        1 : if WhereX > 77 then ext
            else
              if a[WhereX,WhereY] > 0 then ext
              else
               begin
                  if a[WhereX,WhereY] < 0 then b := b + abs(a[WhereX,WhereY]);
                  Write('═');
                  Num := num + 1;
                  a[WhereX-1,WhereY] := Num;
                  if b > 0 then b := b - 1;
                end;
        2: if (WhereY + 1) > 23 then ext
           else
              if a[WhereX-1,WhereY+1] > 0 then ext
              else
                begin
                  if a[WhereX-1,WhereY+1] < 0 then b := b + abs(a[WhereX-1,WhereY+1]);
                  GotoXY(WhereX-1,WhereY+1);
                  Write('║');
                  Num := num + 1;
                  a[WhereX-1,WhereY] := Num;
                  if b > 0 then b := b - 1;
                end;
        3 : if (WhereX-2) < 2 then ext
            else
              if a[WhereX-2,WhereY] > 0 then ext
              else
                begin
                  if a[WhereX-2,WhereY] < 0 then b :=b+abs(a[WhereX-2,WhereY]);
                  GotoXY(Wherex-2,WhereY);
                  Write('═');
                  Num := Num + 1;
                  a[WhereX-1,WhereY] := Num ;
                  if b > 0 then b := b - 1;
                end;
        4 : if (WhereY - 1) < 2 then ext
           else
              if a[WhereX-1,WhereY-1] > 0 then ext
              else
                begin
                  if a[WhereX-1,WhereY-1] < 0 then
                    b := b + abs(a[WhereX-1,WhereY-1]);
                  GotoXY(WhereX-1,WhereY-1);
                  Write('║');
                  Num := Num +1;
                  a[WhereX-1,WhereY] := Num ;
                  if b > 0 then b := b - 1;
                end;
         end;
    end;
    if b = 0 then
      begin
        bg[1] := WhereX;
        bg[2] := WhereY;
        GotoXY(en[1],en[2]);
        Write(' ');
        a[WhereX-1,WhereY] := 0;
        if a[WhereX,WhereY] = e + 1 then
          begin
            en[1] := WhereX;
            en[2] := WhereY;
            e := e + 1;
          end;
        if a[WhereX-2,WhereY] = e + 1 then
          begin
            en[1] := WhereX-2;
            en[2] := WhereY;
            e := e + 1 ;
          end;
        if a[WhereX-1,WhereY+1] = e + 1 then
          begin
            en[1] := WhereX-1;
            en[2] := WhereY+1;
            e := e + 1;
          end;
        if a[WhereX-1,WhereY-1] = e + 1 then
          begin
            en[1] := WhereX-1;
            en[2] := WhereY-1;
            e := e + 1
          end;
        GotoXY(bg[1],bg[2]);
      end;
  Delay(2000);
  k := 0;
  for i := 1 to 79 do
    for j := 1 to 24 do
      if a[i,j] < 0 then k := 1;
  if k = 0 then apple;
  until false;
end;
Begin
  StartUp;
  Game
end.