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2048 (view source)

Revision as of 00:03, 23 August 2020

58 bytes added ,  3 years ago
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→‎{{header|REXX}}: added wording to the REXX section header, order subroutines in alphabetical order, added whitespace, changed comments.
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m (→‎{{header|REXX}}: added wording to the REXX section header, order subroutines in alphabetical order, added whitespace, changed comments.)
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=={{header|REXX}}==
<lang rexx>This REXX version has the features:
::* &nbsp; allows specification of '''N''', &nbsp; the size of the grid &nbsp; (default is '''4''').
::* &nbsp; allows specification of the winning number &nbsp; (default is '''2048''')
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::* &nbsp; allows abbreviations for the directions &nbsp; (Up, Down, Left, Right).
::* &nbsp; allows the player to quit the game at any time.
::* &nbsp; clears the screen if a legal move is in upper case.
::* &nbsp; does error checking/validation for entered directions &nbsp; (in response to the prompt).
::* &nbsp; keeps track of the number of legal moves made and the score.
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if x\=='' then call err "too many arguments entered: " xx
if abbrev('QUIT',a,1) then do; say; say eye "quitting the game".; exit 1; end
good=abbrev('UP',a,1) | abbrev('"DOWN'",a,1) | abbrev('RIGHT',a,1) | abbrev('"LEFT'",a,1)
if \good then call err "invalid direction: " way
if \ok then iterate; moves= moves + 1; call mov
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say translate(eye "Congrats!! You've won the" win 'game!' eye,"═",'─') "score:" score
exit 0 /*stick a fork in it, we're all done. */
/*──────────────────────────────────────────────────────────────────────────────────────*/▼
showGrid: do r=0 for N+2; _= '║'; __= '╠'▼
do c=1 for N; _=_ || row()'║'; __=__ || copies("═", L)'╬'
end /*c*/▼
if r==0 then _= '╔'translate( substr(_, 2, length(_) - 2), "╦", '║')"╗"▼
if r >N then _= '╚'translate( substr(_, 2, length(_) - 2), "╩", '║')"╝"▼
say pad _
if r<N & r>0 then say pad substr(__, 1, length(__) -1)"╣"
end /*r*/; return
/*──────────────────────────────────────────────────────────────────────────────────────*/
@: procedure expose @.; parse arg row,col; return @.row.col
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two: do until @.p.q==b; p= random(1,N); q= random(1,N); end; @.p.q= ten(); return
/*──────────────────────────────────────────────────────────────────────────────────────*/
movshowGrid: move= do r=0; for N+2; if d= _= 'R║'; then call moveLR N, 1, -1 /*move (slide) numbers right. */ __= "╠"
ifdo dc=='L'1 thenfor callN; moveLR 1, N, +1 _= _ /* || " row()'║'; " __= __ || copies("═", left. */L)'╬'
if d=='U' then call moveUD 1, N, +1 end /* " " " up. c*/
if dr=='D'0 then call_= moveUD'╔'translate( Nsubstr(_, 12, length(_) -1 /*2), " ╦", '║')"╗" down. */
▲ if r==0 >N then _= '╔╚'translate( substr(_, 2, length(_) - 2), "╦╩", '║')"╗╝"
▲showGrid: do r=0 for N+2; _= '║'; __= '╠' say pad _
▲ if r<N & r>N0 then _=say '╚'translate(pad substr(___, 21, length(___) - 2), "╩", '║'1)"╝╣"
▲ end end /*cr*/; return
▲/*──────────────────────────────────────────────────────────────────────────────────────*/
mov: move= 0; if d=='R' then call moveLR N, 1, -1 /*move (slide) numbers ► */
end if d=='L' then call moveLR 1, N, +1 /*c*/; " " " ◄ return*/▼
end if d=='U' then call moveUD 1, N, +1 /*r*/; " " " ↑ return<*/lang>▼
if d=='D' then call moveUD N, 1, -1 /* " " " ↓ */
if \move then call err 'moving ' way " doesn't change anything."; return
/*──────────────────────────────────────────────────────────────────────────────────────*/
moveLR: parse arg start, sTo, # /*slide ◄ or ► */
do r=1 for N; old= o_r(); if ! then iterate /*is this row blank? */
do N-1; call packLR /*pack left ◄ or right. ► */
end /*N-1*/ /* [↓] get new tiles.*/
new= o_r(); move= move | (old\==new) /*indicate tiles moved*/
do c=start for N-1 by # while @.r.c\==b /*slide left ◄ or right. ► */
if @.r.c\==@(r,c+#) then iterate /*not a duplicate ? */
@.r.c= @.r.c * 2; score= score + @.r.c /*double; bump score */
c= c + # ; @.r.c= b; move= 1 move= 1 /*bump C; blank dup 2.*/
end /*c*/ /* [↑] indicate move.*/
call packLR /*pack left ◄ or right. ► */
end /*r*/; return
/*──────────────────────────────────────────────────────────────────────────────────────*/
moveUD: parse arg start, Sto, # /*slide ↑ or ↓ */
do c=1 for N; old= o_c(); if ! then iterate /*is this col blank? */
do N-1; call packUD /*pack up or down. */
end /*N-1*/ /* [↓] get new tiles.*/
new= o_c(); move= move | (old\==new) /*indicate tiles moved*/
do r=start for N-1 by # while @.r.c\==b /*slide up ↑ or down. ↓ */
if @.r.c\==@(r+#,c) then iterate /*not a duplicate ? */
@.r.c= @.r.c * 2; score= score + @.r.c /*double; bump score */
r= r + # ; @.r.c= b; move= 1 move= 1 /*bump R; blank dup 2.*/
end /*r*/ /* [↑] indicate move.*/
call packUD /*pack up ↑ or down. ↓ */
end /*c*/; return
/*──────────────────────────────────────────────────────────────────────────────────────*/
packLR: do c=start for N-1 by #; if @.r.c\==b then iterate /*slideNot lefta orblank? right Skip. */
do if @.r.c\s==bc thento iteratesTo by #; @.r.s= @(r, s + #) /*slide ◄ /*Not aor blank? Skip.► */
end /*s*/; do s=c to sTo by #; @.r.ssTo= @(r,b s+#) /*slidehandle leftthe orlast rightone.*/
end end /*sc*/; @.r.sTo= b /*handle the last one.*/return
▲ end /*c*/; return
/*──────────────────────────────────────────────────────────────────────────────────────*/
packUD: do r=start for N-1 by #; if @.r.c\==b then iterate /*slideNot upa orblank? down Skip. */
do if @.r.c\s==br thento iteratesTo by #; @.s.c= @(s + #, c) /*slide ↑ /*Not aor blank? Skip.↓ */
end /*s*/; do s=r to sTo by #; @.ssTo.c= @(s+#,b c) /*slide up or down. /*handle the last one.*/
end end /*sr*/; @.sTo.c= b return</*handle the last one.*/lang>
▲ end /*r*/; return</lang>
{{out|output|text=&nbsp; when using the default inputs:}}
<pre style="font-size:84%;height:98ex">
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