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=={{header|Pascal}}==
<lang Pascal>
program game2048;
uses Crt;
const
SIZE_MAP = 4;
SIZETOPBOT = SIZE_MAP*6+6; (* Calculate the length of the top and bottom to create a box around the game *)
NOTHING = 0;
UP = 93;
RIGHT = 92;
LEFT = 91;
DOWN = 90;
type
type_vector = array [1..SIZE_MAP] of integer;
type_game = record
lin,col:integer;
map: array [1..SIZE_MAP,1..SIZE_MAP] of integer;
score:integer;
end;
type_coord = record
lin,col:integer;
end;
var
game:type_game;
end_game,movement:boolean;
procedure Create_Number(var game:type_game);
(* Create the number(2 or 4) in a random position on the map *)
(* The number 4 had a 10% of chance to be created *)
var
number:integer;
RanP:type_coord;
begin
randomize;
if random(9) = 1 then
number:=4
else
number:=2;
RanP.lin:=random(game.lin)+1;
RanP.col:=random(game.col)+1;
while game.map[RanP.lin,RanP.col] <> NOTHING do
begin
RanP.lin:=random(game.lin)+1;
RanP.col:=random(game.col)+1;
end;
game.map[RanP.lin,Ranp.Col]:=number;
end;
procedure initializing_game(var game:type_game);
var i,j:integer;
begin
game.lin:=SIZE_MAP;
game.col:=SIZE_MAP;
game.score:=0;
for i:=1 to game.lin do
for j:=1 to game.col do
game.map[i,j]:=NOTHING;
Create_Number(game);
Create_Number(game);
end;
function CountDigit(number:integer):integer;
begin
if number <> 0 then
begin
CountDigit:=0;
while number <> 0 do
begin
CountDigit:=CountDigit+1;
number:=number div 10;
end;
end
else
CountDigit:=1;
end;
procedure print_number(number:integer);
(* Print the number aligned with other numbers in the matrix *)
var k,hwdigit:integer;
begin
hwdigit:=CountDigit(number);
write(' ');
write(number);
(* The 4 is used to aling the numbers because the greatest number *)
(* possible is 2048, which have 4 digits *)
for k:=1 to 4-hwdigit do
write(' ');
write(' ');
end;
procedure print_line(lengthL:integer; ch:string);
var i:integer;
begin
write('+');
for i:=1 to (lengthL-2) do
begin
if i mod 7 = 0 then
write('+')
else
write(ch);
end;
writeln;
end;
procedure print_map(var game:type_game);
var i,j:integer;
begin
print_line(SIZETOPBOT,'-');
for i:=1 to game.lin do
begin
write('|');
for j:=1 to game.col do
if game.map[i,j] >= 0 then
begin
print_number(game.map[i,j]);
write('|');
end;
writeln;
print_line(SIZETOPBOT,'-');
end;
end;
function CanMove(var v_lin:type_vector; i:integer):integer;
(* Returns 1 if the next position is free *)
(* Returns 2 if the next position has an equal number *)
(* Returns 0 if the next position is not free *)
begin
if v_lin[i-1] = NOTHING then
CanMove:=1
else if v_lin[i] = v_lin[i-1] then
CanMove:=2
else
CanMove:=0;
end;
function MoveAndSum(var game:type_game; var v_lin:type_vector; size:integer):boolean;
(* Move and Sum the elements of the vector *)
(* The direction of the move is to the left *)
(* Returns TRUE if a number was moved *)
(* Returns FALSE if a move was not moved *)
var
i,e,ResultM:integer;
v:type_vector;
begin
MoveAndSum:=FALSE;
(* Initializing the vector *)
(* This Vector is to know what number sum and what not sum *)
for i:=1 to size do
v[i]:=0;
for i:=2 to size do
begin
if v_lin[i] <> 0 then
begin
(* Move the number in v_lin[i] to the left as much as possible *)
e:=i;
ResultM:=CanMove(v_lin,e);
while (ResultM <> 0)and(e>1) do
begin
case ResultM of
1:begin
v_lin[e-1]:=v_lin[e];
v_lin[e]:=NOTHING;
end;
2:begin
if v[e] = 0 then
begin
v_lin[e-1]:=v_lin[e-1]*2;
game.score:=game.score+v_lin[e-1];
v_lin[e]:=NOTHING;
(* This number will not be sum again *)
v[e-1]:=1;
end;
end;
end;
e:=e-1;
ResultM:=CanMove(v_lin,e);
end;
if e <> i then
MoveAndSum:=TRUE;
v[e-1]:=1;
end;
end;
end;
function move_left(var game:type_game):boolean;
var
i,j:integer;
v:type_vector;
begin
move_left:=FALSE;
for i:=1 to game.lin do
begin
for j:=1 to game.col do
v[j]:=game.map[i,j];
if MoveAndSum(game,v,game.lin) then
move_left:=TRUE;
for j:=1 to game.col do
game.map[i,j]:=v[j];
end;
end;
function move_right(var game:type_game):boolean;
var
i,j,k:integer;
v:type_vector;
begin
move_right:=FALSE;
for i:=1 to game.lin do
begin
(* The side which will be move had to be at the beginning of the vector *)
(* For example, I want to move this line to the right: 0 2 0 3 6 *)
(* The procedure "MoveAndSum" has to receive this vector: 6 3 0 2 0 *)
k:=1;
for j:=game.col downto 1 do
begin
v[k]:=game.map[i,j];
k:=k+1;
end;
if MoveAndSum(game,v,game.lin) then
move_right:=TRUE;
(* Copy to the right place in the matrix *)
k:=1;
for j:=game.col downto 1 do
begin
game.map[i,k]:=v[j];
k:=k+1;
end;
end;
end;
function move_down(var game:type_game):boolean;
var
i,j,k:integer;
v:type_vector;
begin
move_down:=FALSE;
for j:=1 to game.col do
begin
k:=1;
for i:=game.lin downto 1 do
begin
v[k]:=game.map[i,j];
k:=k+1;
end;
if MoveAndSum(game,v,game.lin) then
move_down:=TRUE;
k:=1;
for i:=game.lin downto 1 do
begin
game.map[k,j]:=v[i];
k:=k+1;
end;
end;
end;
function move_up(var game:type_game):boolean;
var
i,j:integer;
v:type_vector;
begin
move_up:=FALSE;
for j:=1 to game.col do
begin
for i:=1 to game.lin do
v[i]:=game.map[i,j];
if MoveAndSum(game,v,game.lin) then
move_up:=TRUE;
for i:=1 to game.lin do
game.map[i,j]:=v[i];
end;
end;
function CheckWinLose(var game:type_game):integer;
(* Returns 2 if the player win the game *)
(* Returns 1 if the player lose the game *)
(* Returns 0 if has a valid move*)
var i,j:integer;
begin
with game do
begin
CheckWinLose:=1;
i:=1;
while (i<=game.lin)and(CheckWinLose<>2) do
begin
j:=1;
while (j<=game.col)and(CheckWinLose<>2) do
begin
if map[i,j] = 2048 then
CheckWinLose:=2
else
if map[i,j] = NOTHING then
CheckWinLose:=0
else
if (map[i,j] = map[i,j+1])and(j<>col) then
CheckWinLose:=0
else
if (map[i,j] = map[i,j-1])and(j<>1) then
CheckWinLose:=0
else
if (map[i,j] = map[i+1,j])and(i<>lin) then
CheckWinLose:=0
else
if (map[i,j] = map[i-1,j])and(i<>1) then
CheckWinLose:=0;
j:=j+1;
end;
i:=i+1;
end;
end;
end;
begin
movement:=false;
end_game:=false;
initializing_game(game);
repeat
ClrScr;
if movement then
Create_Number(game);
movement:=false;
writeln('SCORE: ',game.score);
print_map(game);
writeln(' Use the arrow keys to move ');
writeln(' Press ESC to quit the game ');
case CheckWinLose(game) of
1:begin
print_line(SIZETOPBOT,'-');
writeln('| Game Over! |');
print_line(SIZETOPBOT,'-');
end_game:=TRUE;
end;
2:begin
print_line(SIZETOPBOT,'-');
writeln('| You Win! |');
print_line(SIZETOPBOT,'-');
end_game:=TRUE;
end;
end;
repeat
until KeyPressed;
case ReadKey of
#0:begin
case ReadKey of
#72:movement:=move_up(game);
#77:movement:=move_right(game);
#75:movement:=move_left(game);
#80:movement:=move_down(game);
end;
end;
#27:end_game:=true;
end;
until end_game;
end.
</lang>
=={{header|Perl}}==
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