Apabila balok-balok tersebut tidak disusun sesuai dengan warnanya maka balok-balok tersebut akan menumpuk terus-menerus.
Kalau Balok tersebut terus menerus bertumpuk hingga mencapai ujung paling atas, maka permainan dinyatakan berakhir (Game Over).
Itu adalah sekilas tentang permainan tetris. Pada kesempatan kali ini, saya ingin berbagi cara bagaimana membuat tetris pada Turbo Pascal 7.0. Tanpa panjang lebar lagi ini dia listing program selengkapnya :
program tetris_2player;
uses crt;
type _points = array [1..4] of record
x,y : longint;
end;
tetris = record
points : _points;
cshape, nshape, xmodel, xtetris, ymodel, ytetris : longint;
end;
Const template : array [1..8] of _points =
(((x:1; y:1),(x:1; y:2),(x:2; y:1),(x:2; y:2)),
((x:2; y:1),(x:1; y:1),(x:3; y:1),(x:4; y:1)),
((x:1; y:2),(x:1; y:1),(x:1; y:3),(x:2; y:3)),
((x:2; y:2),(x:2; y:1),(x:2; y:3),(x:1; y:3)),
((x:1; y:2),(x:1; y:1),(x:2; y:2),(x:2; y:3)),
((x:1; y:2),(x:2; y:1),(x:2; y:2),(x:1; y:3)),
((x:1; y:2),(x:1; y:1),(x:1; y:3),(x:2; y:2)),
((x:1; y:2),(x:2; y:1),(x:2; y:2),(x:2; y:3)));
var field : array [1..79,1..25] of boolean;
tetris1, tetris2, ttetris : tetris;
quit,gameover : boolean;
answer : char;
procedure init_field;
var i : longint;
begin
clrscr; fillchar(field,sizeof(field),0);
for i := 3 to 22 do
begin
gotoxy(20,i); write(#186); field[20,i] := true;
gotoxy(36,i); write(#186); field[36,i] := true;
gotoxy(60,i); write(#186); field[60,i] := true;
gotoxy(76,i); write(#186); field[76,i] := true;
end;
for i := 1 to 15 do
begin
gotoxy(20+i,23); write(#205); field[20+i,23] := true;
gotoxy(60+i,23); write(#205); field[60+i,23] := true;
end;
gotoxy(20,23); write(#200);
gotoxy(60,23); write(#200);
gotoxy(36,23); write(#188);
gotoxy(76,23); write(#188);
gotoxy(6,4); write('Next:');
gotoxy(46,4); write('Next:');
end;
procedure drawtetris(objek : tetris; mode : Boolean);
var i : longint;
c : char;
begin
if mode then c := #178 else c := #32;
for i := 1 to 4 do
begin
field[objek.points[i].x,objek.points[i].y] := mode;
gotoxy(objek.points[i].x, objek.points[i].y);
write(c);
end;
gotoxy(1,1);
End;
procedure dropnew(var objek : tetris);
var i : longint;
begin
if objek.cshape <> 0 then
begin
for i := 1 to 4 do
begin
ttetris.points[i].x := template[objek.nshape,i].x + objek.xmodel;
ttetris.points[i].y := template[objek.nshape,i].y + objek.ymodel;
end;
drawtetris(ttetris,false);
end;
objek.cshape := objek.nshape;
objek.nshape := random(8) + 1;
for i := 1 to 4 do
begin
objek.points[i].x := template[objek.cshape,i].x + objek.xtetris;
objek.points[i].y := template[objek.cshape,i].y + objek.ytetris;
ttetris.points[i].x := template[objek.nshape,i].x + objek.xmodel;
ttetris.points[i].y := template[objek.nshape,i].y + objek.ymodel;
if field[objek.points[i].x,objek.points[i].y] then
begin
gameover := true;
break;
end;
end;
drawtetris(objek,true);
drawtetris(ttetris,true);
end;
procedure init_tetris(var objek : tetris; id : longint);
begin
objek.nshape := random(8) + 1;
if id = 1 then
begin
objek.xmodel := 7; objek.xtetris := 26;
end else begin
objek.xmodel := 47; objek.xtetris := 66;
end;
objek.ymodel := 5; objek.ytetris := 2;
dropnew(objek);
end;
procedure eliminate(objek : tetris; y : longint);
var i,j,k : longint;
blank : boolean;
begin
for i := y downto 3 do
begin
blank := false;
for j := objek.xmodel + 14 to objek.xmodel + 28 do
if not field[j,i] then
begin
blank := true;
break;
end;
if not blank then
begin
for k := i downto 3 do
begin
gotoxy(objek.xmodel + 14,k);
for j := (objek.xmodel + 14) to (objek.xmodel + 28) do
begin
if field[j,k-1] then write(#178) else write(#32);
field[j,k] := field[j,k-1];
end;
end;
eliminate(objek,i);
break;
end;
end;
end;
procedure slide(var objek : tetris);
var i : longint;
dropped : boolean;
begin
drawtetris(objek,false);
ttetris := objek;
dropped := false;
for i := 1 to 4 do
begin
inc(ttetris.points[i].y);
if field[ttetris.points[i].x,ttetris.points[i].y] then
begin
dropped := true;
break;
end;
end;
if not dropped then objek := ttetris;
drawtetris(objek,true);
if dropped then
begin
eliminate(objek,22);
dropnew(objek);
end;
end;
procedure rotate(var objek : tetris);
var i : longint;
collide : boolean;
begin
drawtetris(objek,false);
ttetris := objek;
collide := false;
for i := 2 to 4 do
begin
ttetris.points[i].y := objek.points[1].y + objek.points[i].x - objek.points[1].x;
ttetris.points[i].x := objek.points[1].x - objek.points[i].y + objek.points[1].y;
if field[ttetris.points[i].x,ttetris.points[i].y] then
begin
collide := true;
break;
end;
end;
if not collide then objek := ttetris;
drawtetris(objek,true);
end;
procedure shift(var objek : tetris; x, y : longint);
var i : longint;
collide : boolean;
begin
drawtetris(objek,false);
ttetris := objek;
collide := false;
for i := 1 to 4 do
begin
ttetris.points[i].x := objek.points[i].x + x;
ttetris.points[i].y := objek.points[i].y + y;
if field[ttetris.points[i].x,ttetris.points[i].y] then
begin
collide := true;
break;
end;
end;
if not collide then objek := ttetris;
drawtetris(objek,true);
if collide then eliminate(objek,22);
end;
procedure userinput;
var i : longint;
c : char;
begin
for i := 1 to 20 do
begin
if keypressed then
begin
c := upcase(readkey);
case c of
'W' : if tetris1.cshape <> 1 then rotate(tetris1);
#72 : if tetris2.cshape <> 1 then rotate(tetris2);
'A' : shift(tetris1,-1,0);
#75 : shift(tetris2,-1,0);
'S' : shift(tetris1,0,1);
#80 : shift(tetris2,0,1);
'D' : shift(tetris1,1,0);
#77 : shift(tetris2,1,0);
#27 : gameover := true;
#32 : repeat delay(10); until keypressed;
end;
end;
delay(10);
end;
end;
begin
randomize;
while not quit do
begin
init_field;
init_tetris(tetris1,1);
init_tetris(tetris2,2);
gameover := false;
while not gameover do
begin
slide(tetris1);
slide(tetris2);
userinput;
end;
gotoxy(1,25); write('Play Again[Y/N]? ');
repeat
answer := upcase(readkey);
until answer in ['Y','N',#27];
if (answer = 'N') or (answer = #27) then break;
end;
end.
Semoga Berguna, Semoga Bermanfaat.
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