Free Pascal Game

Snake Game :

program Ular_Ular;
uses crt;

label
  habis, lanjut,ulang;
const
  max_panjang = 100;
  batas_x     = 80;
  batas_y     = 24;
  speed       = 200;
  z           =#186;
  y=#205;   a =#201;     b=#187;     c=#200;     d=#188;
type
    tempat = record
    x, y : integer;
end;

var
  ekor             : array [1..max_panjang] of tempat;
  ujung, makanan   : tempat;
  tkn, ulg              : char;
  i,p,pjg,skor,spd,skorr,topskor : integer;
  mati             : boolean;

function kotak:string;
begin
     write(d);
end;
procedure atur_posisi;
          begin  textcolor(3);
               ujung.x := ekor[pjg].x;
               ujung.y := ekor[pjg].y;
               for i:=pjg downto 2 do
               begin
                    ekor[i].x := ekor[i-1].x;
                    ekor[i].y := ekor[i-1].y;
               end;
               gotoxy(ekor[2].x, ekor[2].y); write('@');
               gotoxy(ekor[3].x, ekor[3].y); write('o');
               gotoxy(ekor[pjg-1].x, ekor[pjg-1].y); write('o');
               gotoxy(ujung.x, ujung.y); write(' ');
               for i:=3 to pjg do
                   if((ekor[2].x=ekor[i].x) and (ekor[2].y=ekor[i].y)) then mati:=true;
                   delay(speed-spd);
          end;
procedure makan;
          var
             beda : boolean;
          begin textcolor(7);
               inc(skorr,5);
               topskor:=skorr;
               gotoxy(36,25);write(' skor : ',topskor);
          repeat      textcolor(4);
                beda := true;
                makanan.x := random(batas_x-2)+2;
                makanan.y := random(batas_y-2)+2;
                for i:=1 to pjg do
                    if((makanan.x=ekor[i].x) and (makanan.y=ekor[i].y)) then beda:=false;
          until beda;
                gotoxy(makanan.x, makanan.y); write('o');
                inc(pjg);
                inc(spd,2);
          end;
procedure bergerak(c : char);
          begin
                if c = 'd' then begin
          repeat
                if((ekor[1].x = makanan.x) and (ekor[1].y = makanan.y)) then makan;
                ekor[1].x := ekor[1].x+1;
                atur_posisi;
                if (ekor[1].x = batas_x) or (ekor[1].y = batas_y) or (ekor[1].x = 1) or (ekor[1].y = 1) then mati := true;
          until keypressed or mati;
                if mati then exit;
                tkn:=readkey;
                if tkn = 'a' then tkn:='d';
          end
          else if c = 's' then begin
          repeat
                if((ekor[1].x = makanan.x) and (ekor[1].y = makanan.y)) then makan;
                ekor[1].y := ekor[1].y+1;
          atur_posisi;
                if (ekor[1].x = batas_x) or (ekor[1].y = batas_y) or (ekor[1].x = 1) or (ekor[1].y = 1) then mati := true;
          until keypressed or mati;
                if mati then exit;
                tkn:=readkey;
                if tkn = 'w' then tkn:='s';
          end
          else if c = 'w' then
          begin
          repeat
                if((ekor[1].x = makanan.x) and (ekor[1].y = makanan.y)) then makan;
                ekor[1].y := ekor[1].y-1;
          atur_posisi;
                if (ekor[1].x = batas_x) or (ekor[1].y = batas_y) or (ekor[1].x = 1) or (ekor[1].y = 1) then mati := true;
          until keypressed or mati;
                if mati then exit;
                tkn:=readkey;
                if tkn = 's' then tkn:='w';
          end
          else if c = 'a' then
          begin
          repeat
                if((ekor[1].x = makanan.x) and (ekor[1].y = makanan.y)) then makan;
                ekor[1].x := ekor[1].x-1;
          atur_posisi;
                if (ekor[1].x = batas_x) or (ekor[1].y = batas_y) or (ekor[1].x = 1) or (ekor[1].y = 1) then mati := true;
          until keypressed or mati;
                if mati then exit;
                tkn:=readkey;
                if tkn = 'd' then tkn:='a';
end;
          end;
          begin
               tkn:='d';
               mati := false;
          randomize;
               pjg := 10; spd := 0;
               makanan.x := random(batas_x-2)+2;
               makanan.y := random(batas_y-2)+2;
               ekor[1].x := 40;
               ekor[1].y := 3;
               for i:=2 to pjg do begin
                   ekor[i].x := ekor[i-1].x;
                   ekor[i].y := 3;
end;
lanjut:
        clrscr;  textcolor(7);
        gotoxy(10,26); write('Skor = ',skor);
        for i:=0 to 80 do begin
            gotoxy(i,1); write(y);
            gotoxy(80,24); write(kotak);
            gotoxy(1,24);write(c);
                 for p:= i to 77 do write(y);
        end;
        for i:=2 to 23 do begin
            gotoxy(1,i); write(z);
            gotoxy(1,1);write(a);
            gotoxy(80,1);write(b);
            gotoxy(80,i); write(z);
        end;
        for i:=1 to pjg do begin
            gotoxy(ekor[i].x, ekor[i].y);
            write('&');
        end;
            gotoxy(makanan.x, makanan.y); write('o');
        repeat
            if((tkn='w') or (tkn='a') or (tkn='s') or (tkn='d')) then bergerak(tkn)
        else begin
        repeat
            gotoxy(20,11); write('          Paused Game');
        repeat
            gotoxy(20,13); write('Press w, a, s or d to continue'); delay(200);
            gotoxy(20,13); write('                                '); delay(200);
        until keypressed;
            tkn:=readkey;
        until((tkn='w') or (tkn='a') or (tkn='s') or (tkn='d')); goto lanjut;
        end;
        if mati then goto habis;
        until (tkn = #27) or mati;
habis:
        gotoxy(31,13); write(' ...GAME OVER...');
        read;
        readln;
end .