From ae25f000ee16486576bd3e5ad506fad0c44e9c11 Mon Sep 17 00:00:00 2001
From: nsfisis <nsfisis@gmail.com>
Date: Mon, 5 Jan 2026 01:49:34 +0900
Subject: make more portable

---
 2048.c       | 57 ++++++++++++++++++++++++++++-----------------------------
 2048_clean.c |  6 +++---
 2 files changed, 31 insertions(+), 32 deletions(-)

diff --git a/2048.c b/2048.c
index 1e7e0cb..d4aee6d 100644
--- a/2048.c
+++ b/2048.c
@@ -1,32 +1,31 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <termios.h>
-#include <time.h>
-#include <unistd.h>
-#define f(f,_)printf(f,_)
-#define s(_)f("%s",_)
-#define n s("\r\n")
+#include<stdio.h>
+#include<stdlib.h>
+#include<termios.h>
+#include<time.h>
+#include<unistd.h>
+#define f printf
+#define n f("\r\n")
 #define r(_,n)for(int _=0;_<n;++_)
 #define t(_)(G+y*((x+S)%(S+1)+_*x)+(S+1-y)*i)
 
-int S,N,E,C,*L,*T,F[  128],*G= F,R ;struct  termios O   ;void x(  ){if(!R++)tcsetattr(
-0,2,&O),s("\e[?25h\e" "[?1049l");}void _()  {s("+");    r(i,8*S-  1)s("-");s("+");n;}
-void l(){s("|");r(i,  S){r(j,7)s(" ");s("|" );}n;}int   m(int x,  int y,int d){C=0;r(i
-,S){E=0;L=0;r(j,S)if  (*(T=t(j)))if(L&&*T   ==*L){if    (d){*L*=  2;T=0;}L=0;C=1;}else
-            {L=t(E);  if(d)*L=    *T;++E;}  for(;E<S    ;++E){T=  t(E);C|=    *T;if(d)
-            *T=0; }}  return!C    ;}void p  (){ E =0    ;r( i,S*  S)if (!G    [i])++E;
-            if(E==0)  return;N    =rand()%  E;r(i,S*    S)if(!G[  i]&&--E==   N)G[i]=
-            rand()%8  ?2:4;}int   main(int  argc,char   **argv){  srand(time(0));atexit
-(x); s("\e[?1049h");  tcgetattr   (0, &O);  struct termios o=O;o  .c_iflag&=-1331;o.
-c_oflag&=-2;o.c_cflag |=48;o.     c_lflag&= -32780;o.c_cc[6]=0;o  .c_cc[5]=1;tcsetattr
-(0,2,&o);s("\e[?25l"  );S=argc>   1?(*argv  [1]-48):4;if(S<2||S>  8){fputs("invalid b"
-"oard size\n",stderr  );return    1;}p();p  ();for(;;){s("\e[2"   "J\e[H");_();r(i,S){
-l();s("| "            );r(j,S)    {if(!*G)              s("    "  "  | ");else if(*G>=
-1024)f(" "            "%2dk  "    "| ",*G/              1024);else f("%4d  | ",*G);++G
-;}n;l();              if(i<S-1    ){s("|")              ;r(j,S){  r(j,7)s(    "-");if(
-j<S-1)s(              "+");}s(    "|");n;}              }_();G-=  S*S;s("  "  "h,j,k,"
-"l: move");r(i,9)s(" ");s("q: quit");fflush             (stdout)  ;char k;while(read(0
-,&k,1)!=1);switch(k)  {case'q':goto q;case              'h':m(1,  1,1);goto e;case'j':
-m(-1,S,1);goto e;case 'k':m(1,S,1);goto e;              case'l':  m(-1,1,1);goto e;e:if
-(C)p();if(m(1,1,0)&m  (-1,1,0)&m(1,S,0)&m(              -1,S,0))  goto q;usleep(2048*8
-);break;}}q:x();s("\e[2J\e[H");}/* 2048 in 2 kb by nsfisis */
+int S ,N,E,C ,*L ,*T  ,F[128] ,*G =F;struct  termios O   ;void x()  {tcsetattr(0,TCSAFLU\
+SH,&O);f("\e[?25h\e"  "[?1049l\e[2J\e[H");}  void _(){   f("+");r(  i,8*S-1)f("-");f("+")
+;n;}void l(){f("|");  r(i,S){r(j,7)f(" ");f  ("|" ); }   n;}int m(  int x,int y,int d){C=
+0;r(i,S){E=0;L=0;r(j  ,S)if(*(T=t(j)))if(L   &&*T==*L)   {if(d){*L  *=2;T=0;}L=0;C=1;}else
+          {L=t(E);if  (d)*L=*T;   ++E;}for(  ;E<S;++E)   {T=t(E);C  |=*T;if(    d)*T=0;}}
+          return! C;  }void p()   {E=0;r(i,  S *S)if(!   G[i])++E;  if(E==0)    return;N=
+          rand()%E;r  (i,S*S)if   (!G[i]&&   --E==N)G[   i]=rand()  %8?2:4;}    int main(
+          int A,char  **a){srand  (time(0))  ;S=A> 1?(   *a[1]-48)  :4;if(S<    2 ||S>8){
+fputs("invalid board size" "\n"   ,stderr);  return 1;} atexit(x);  f ("\033[?1049h");tc\
+getattr(0,&O);struct  termios o   =O;o.      c_iflag &=~ ( BRKINT|  ICRNL| INPCK |ISTRIP|
+IXON);o.c_oflag&=~    OPOST;o.    c_cflag|=  CS8;o.c_lflag&=~(ECHO  |ICANON|IEXTEN|ISIG);
+o.c_cc[VMIN]=0;o.c_cc [VTIME]=1   ;tcsetattr (0,2,&o);f("\e[?25l")  ;p();p();while(32){f(
+"\e[2J\e[H");_();r(i  ,S){l();f   ("| ");r(  j,S){if(!*G)f("     "  " | "); else if (*G>=
+1024)f(" "            "%2dk  |"   " ", * G/              1024);else f("%4d  "   "| ",*G);
+++G;}n;l()            ;if(i<S-1   ){f("|");              r(j,S){r(  j,7)f("-"   );if(j<S-
+1) f("+");            }f( "|");   n;}}_();G              -= S*S;f(  "  h"",j"   ",k,l: "
+"move") ;r            (i,9 )f(    " " ); f(              "q: quit"  );fflush(   stdout );
+char k,e=0;while(     read(0,&k, 1)!=1);if(              k=='q')    goto q;if(k=='h')m(1,
+1,e=1);if(k=='j')m(-  1,S,e=1);if(k=='k')m(              1,S,e=1);  if(k  =='l')m(-1 ,1,e
+=1);if(e ){if(C)p();  if(m(1,1,0)&m (-1,1,0              )&m( 1,S,  0)&m(-1,S ,0))goto q;
+usleep(2048*8);}}q:;  } /*nsfisis*/
diff --git a/2048_clean.c b/2048_clean.c
index 79a474b..cade2b4 100644
--- a/2048_clean.c
+++ b/2048_clean.c
@@ -177,15 +177,15 @@ void put_new_tile(void) {
 int main(int argc, char **argv) {
     srand(time(0));
 
-    switch_to_alt_buffer();
-    enable_raw_mode();
-
     size = argc > 1 ? (*argv[1] - '0') : 4;
     if (size <= 1 || size > 8) {
         fputs("invalid board size\n", stderr);
         return 1;
     }
 
+    switch_to_alt_buffer();
+    enable_raw_mode();
+
     put_new_tile();
     put_new_tile();
 
-- 
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