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- /* tok.c Larn is copyrighted 1986 by Noah Morgan. */
- #include <sys/types.h>
- #ifdef SYSV
- #include <fcntl.h>
- #include <termio.h>
- #else SYSV
- #include <sys/ioctl.h>
- #endif SYSV
- #include "header.h"
-
- static char lastok=0;
- int yrepcount=0,dayplay=0;
- #ifndef FLUSHNO
- #define FLUSHNO 5
- #endif FLUSHNO
- static int flushno=FLUSHNO; /* input queue flushing threshold */
- #define MAXUM 52 /* maximum number of user re-named monsters */
- #define MAXMNAME 40 /* max length of a monster re-name */
- static char usermonster[MAXUM][MAXMNAME]; /* the user named monster name goes here */
- static char usermpoint=0; /* the user monster pointer */
-
- /*
- lexical analyzer for larn
- */
- yylex()
- {
- char cc;
- int ic;
- if (hit2flag) { hit2flag=0; yrepcount=0; return(' '); }
- if (yrepcount>0) { --yrepcount; return(lastok); } else yrepcount=0;
- if (yrepcount==0) { bottomdo(); showplayer(); } /* show where the player is */
- lflush();
- while (1)
- {
- c[BYTESIN]++;
- if (ckpflag)
- if ((c[BYTESIN] % 400) == 0) /* check for periodic checkpointing */
- {
- #ifndef DOCHECKPOINTS
- savegame(ckpfile);
- #else
- wait(0); /* wait for other forks to finish */
- if (fork() == 0) { savegame(ckpfile); exit(); }
- #endif
-
-
- #ifdef TIMECHECK
- if (dayplay==0)
- if (playable())
- {
- cursor(1,19);
- lprcat("\nSorry, but it is now time for work. Your game has been saved.\n"); beep();
- lflush(); savegame(savefilename); wizard=nomove=1; sleep(4);
- died(-257);
- }
- #endif TIMECHECK
-
- }
-
- do /* if keyboard input buffer is too big, flush some of it */
- {
- ioctl(0,FIONREAD,&ic);
- if (ic>flushno) read(0,&cc,1);
- }
- while (ic>flushno);
-
- if (read(0,&cc,1) != 1) return(lastok = -1);
-
- if (cc == 'Y'-64) /* control Y -- shell escape */
- {
- resetscroll(); clear(); /* scrolling region, home, clear, no attributes */
- if ((ic=fork())==0) /* child */
- {
- execl("/bin/csh",0); exit();
- }
- wait(0);
- if (ic<0) /* error */
- {
- write(2,"Can't fork off a shell!\n",25); sleep(2);
- }
-
- setscroll();
- return(lastok = 'L'-64); /* redisplay screen */
- }
-
- if ((cc <= '9') && (cc >= '0'))
- { yrepcount = yrepcount*10 + cc - '0'; }
- else { if (yrepcount>0) --yrepcount; return(lastok = cc); }
- }
- }
-
- /*
- * flushall() Function to flush all type-ahead in the input buffer
- */
- flushall()
- {
- char cc;
- int ic;
- for (;;) /* if keyboard input buffer is too big, flush some of it */
- {
- ioctl(0,FIONREAD,&ic);
- if (ic<=0) return;
- while (ic>0) { read(0,&cc,1); --ic; } /* gobble up the byte */
- }
- }
-
- /*
- function to set the desired hardness
- enter with hard= -1 for default hardness, else any desired hardness
- */
- sethard(hard)
- int hard;
- {
- register int j,k,i;
- j=c[HARDGAME]; hashewon();
- if (restorflag==0) /* don't set c[HARDGAME] if restoring game */
- {
- if (hard >= 0) c[HARDGAME]= hard;
- }
- else c[HARDGAME]=j; /* set c[HARDGAME] to proper value if restoring game */
-
- if (k=c[HARDGAME])
- for (j=0; j<=MAXMONST+8; j++)
- {
- i = ((6+k)*monster[j].hitpoints+1)/6;
- monster[j].hitpoints = (i<0) ? 32767 : i;
- i = ((6+k)*monster[j].damage+1)/5;
- monster[j].damage = (i>127) ? 127 : i;
- i = (10*monster[j].gold)/(10+k);
- monster[j].gold = (i>32767) ? 32767 : i;
- i = monster[j].armorclass - k;
- monster[j].armorclass = (i< -127) ? -127 : i;
- i = (7*monster[j].experience)/(7+k) + 1;
- monster[j].experience = (i<=0) ? 1 : i;
- }
- }
-
- /*
- function to read and process the larn options file
- */
- readopts()
- {
- register char *i;
- register int j,k;
- int flag;
- flag=1; /* set to 0 if he specifies a name for his character */
- if (lopen(optsfile) < 0)
- {
- strcpy(logname,loginname); return; /* user name if no character name */
- }
- i = " ";
- while (*i)
- {
- if ((i=(char *)lgetw()) == 0) break; /* check for EOF */
- while ((*i==' ') || (*i=='\t')) i++; /* eat leading whitespace */
- switch(*i)
- {
- case 'b': if (strcmp(i,"bold-objects") == 0) boldon=1;
- break;
-
- case 'e': if (strcmp(i,"enable-checkpointing") == 0) ckpflag=1;
- break;
-
- case 'i': if (strcmp(i,"inverse-objects") == 0) boldon=0;
- break;
-
- case 'f': if (strcmp(i,"female") == 0) sex=0; /* male or female */
- break;
-
- case 'm': if (strcmp(i,"monster:")== 0) /* name favorite monster */
- {
- if ((i=lgetw())==0) break;
- if (strlen(i)>=MAXMNAME) i[MAXMNAME-1]=0;
- strcpy(usermonster[usermpoint],i);
- if (usermpoint >= MAXUM) break; /* defined all of em */
- if (isalpha(j=usermonster[usermpoint][0]))
- {
- for (k=1; k<MAXMONST+8; k++) /* find monster */
- if (monstnamelist[k] == j)
- {
- monster[k].name = &usermonster[usermpoint++][0];
- break;
- }
- }
- }
- else if (strcmp(i,"male") == 0) sex=1;
- break;
-
- case 'n': if (strcmp(i,"name:") == 0) /* defining players name */
- {
- if ((i=lgetw())==0) break;
- if (strlen(i)>=LOGNAMESIZE) i[LOGNAMESIZE-1]=0;
- strcpy(logname,i); flag=0;
- }
- else if (strcmp(i,"no-introduction") == 0) nowelcome=1;
- else if (strcmp(i,"no-beep") == 0) nobeep=1;
- break;
-
- case 'p': if (strcmp(i,"process-name:")== 0)
- {
- if ((i=lgetw())==0) break;
- if (strlen(i)>=PSNAMESIZE) i[PSNAMESIZE-1]=0;
- strcpy(psname,i);
- }
- else if (strcmp(i,"play-day-play") == 0) dayplay=1;
- break;
-
- case 's': if (strcmp(i,"savefile:") == 0) /* defining savefilename */
- {
- if ((i=lgetw())==0) break;
- strcpy(savefilename,i); flag=0;
- }
- break;
- };
- }
- if (flag) strcpy(logname,loginname);
- }
-
-