tok.c revision 1.4
1 #ifndef lint 2 static char rcsid[] = "$NetBSD: tok.c,v 1.4 1995/04/24 12:24:14 cgd Exp $"; 3 #endif /* not lint */ 4 5 /* tok.c Larn is copyrighted 1986 by Noah Morgan. */ 6 #include <sys/types.h> 7 #ifdef SYSV 8 #include <fcntl.h> 9 #include <termio.h> 10 #else SYSV 11 #include <sys/ioctl.h> 12 #endif SYSV 13 #include "header.h" 14 #include <string.h> 15 16 static char lastok=0; 17 int yrepcount=0,dayplay=0; 18 #ifndef FLUSHNO 19 #define FLUSHNO 5 20 #endif FLUSHNO 21 static int flushno=FLUSHNO; /* input queue flushing threshold */ 22 #define MAXUM 52 /* maximum number of user re-named monsters */ 23 #define MAXMNAME 40 /* max length of a monster re-name */ 24 static char usermonster[MAXUM][MAXMNAME]; /* the user named monster name goes here */ 25 static char usermpoint=0; /* the user monster pointer */ 26 27 /* 28 lexical analyzer for larn 29 */ 30 yylex() 31 { 32 char cc; 33 int ic; 34 if (hit2flag) { hit2flag=0; yrepcount=0; return(' '); } 35 if (yrepcount>0) { --yrepcount; return(lastok); } else yrepcount=0; 36 if (yrepcount==0) { bottomdo(); showplayer(); } /* show where the player is */ 37 lflush(); 38 while (1) 39 { 40 c[BYTESIN]++; 41 if (ckpflag) 42 if ((c[BYTESIN] % 400) == 0) /* check for periodic checkpointing */ 43 { 44 #ifndef DOCHECKPOINTS 45 savegame(ckpfile); 46 #else 47 wait(0); /* wait for other forks to finish */ 48 if (fork() == 0) { savegame(ckpfile); exit(); } 49 #endif 50 51 52 #ifdef TIMECHECK 53 if (dayplay==0) 54 if (playable()) 55 { 56 cursor(1,19); 57 lprcat("\nSorry, but it is now time for work. Your game has been saved.\n"); beep(); 58 lflush(); savegame(savefilename); wizard=nomove=1; sleep(4); 59 died(-257); 60 } 61 #endif TIMECHECK 62 63 } 64 65 do /* if keyboard input buffer is too big, flush some of it */ 66 { 67 ioctl(0,FIONREAD,&ic); 68 if (ic>flushno) read(0,&cc,1); 69 } 70 while (ic>flushno); 71 72 if (read(0,&cc,1) != 1) return(lastok = -1); 73 74 if (cc == 'Y'-64) /* control Y -- shell escape */ 75 { 76 resetscroll(); clear(); /* scrolling region, home, clear, no attributes */ 77 if ((ic=fork())==0) /* child */ 78 { 79 execl("/bin/csh",0); exit(); 80 } 81 wait(0); 82 if (ic<0) /* error */ 83 { 84 write(2,"Can't fork off a shell!\n",25); sleep(2); 85 } 86 87 setscroll(); 88 return(lastok = 'L'-64); /* redisplay screen */ 89 } 90 91 if ((cc <= '9') && (cc >= '0')) 92 { yrepcount = yrepcount*10 + cc - '0'; } 93 else { if (yrepcount>0) --yrepcount; return(lastok = cc); } 94 } 95 } 96 97 /* 98 * flushall() Function to flush all type-ahead in the input buffer 99 */ 100 flushall() 101 { 102 char cc; 103 int ic; 104 for (;;) /* if keyboard input buffer is too big, flush some of it */ 105 { 106 ioctl(0,FIONREAD,&ic); 107 if (ic<=0) return; 108 while (ic>0) { read(0,&cc,1); --ic; } /* gobble up the byte */ 109 } 110 } 111 112 /* 113 function to set the desired hardness 114 enter with hard= -1 for default hardness, else any desired hardness 115 */ 116 sethard(hard) 117 int hard; 118 { 119 register int j,k,i; 120 j=c[HARDGAME]; hashewon(); 121 if (restorflag==0) /* don't set c[HARDGAME] if restoring game */ 122 { 123 if (hard >= 0) c[HARDGAME]= hard; 124 } 125 else c[HARDGAME]=j; /* set c[HARDGAME] to proper value if restoring game */ 126 127 if (k=c[HARDGAME]) 128 for (j=0; j<=MAXMONST+8; j++) 129 { 130 i = ((6+k)*monster[j].hitpoints+1)/6; 131 monster[j].hitpoints = (i<0) ? 32767 : i; 132 i = ((6+k)*monster[j].damage+1)/5; 133 monster[j].damage = (i>127) ? 127 : i; 134 i = (10*monster[j].gold)/(10+k); 135 monster[j].gold = (i>32767) ? 32767 : i; 136 i = monster[j].armorclass - k; 137 monster[j].armorclass = (i< -127) ? -127 : i; 138 i = (7*monster[j].experience)/(7+k) + 1; 139 monster[j].experience = (i<=0) ? 1 : i; 140 } 141 } 142 143 /* 144 function to read and process the larn options file 145 */ 146 readopts() 147 { 148 register char *i; 149 register int j,k; 150 int flag; 151 flag=1; /* set to 0 if he specifies a name for his character */ 152 if (lopen(optsfile) < 0) 153 { 154 strcpy(logname,loginname); return; /* user name if no character name */ 155 } 156 i = " "; 157 while (*i) 158 { 159 if ((i=(char *)lgetw()) == 0) break; /* check for EOF */ 160 while ((*i==' ') || (*i=='\t')) i++; /* eat leading whitespace */ 161 switch(*i) 162 { 163 case 'b': if (strcmp(i,"bold-objects") == 0) boldon=1; 164 break; 165 166 case 'e': if (strcmp(i,"enable-checkpointing") == 0) ckpflag=1; 167 break; 168 169 case 'i': if (strcmp(i,"inverse-objects") == 0) boldon=0; 170 break; 171 172 case 'f': if (strcmp(i,"female") == 0) sex=0; /* male or female */ 173 break; 174 175 case 'm': if (strcmp(i,"monster:")== 0) /* name favorite monster */ 176 { 177 if ((i=lgetw())==0) break; 178 if (strlen(i)>=MAXMNAME) i[MAXMNAME-1]=0; 179 strcpy(usermonster[usermpoint],i); 180 if (usermpoint >= MAXUM) break; /* defined all of em */ 181 if (isalpha(j=usermonster[usermpoint][0])) 182 { 183 for (k=1; k<MAXMONST+8; k++) /* find monster */ 184 if (monstnamelist[k] == j) 185 { 186 monster[k].name = &usermonster[usermpoint++][0]; 187 break; 188 } 189 } 190 } 191 else if (strcmp(i,"male") == 0) sex=1; 192 break; 193 194 case 'n': if (strcmp(i,"name:") == 0) /* defining players name */ 195 { 196 if ((i=lgetw())==0) break; 197 if (strlen(i)>=LOGNAMESIZE) i[LOGNAMESIZE-1]=0; 198 strcpy(logname,i); flag=0; 199 } 200 else if (strcmp(i,"no-introduction") == 0) nowelcome=1; 201 else if (strcmp(i,"no-beep") == 0) nobeep=1; 202 break; 203 204 case 'p': if (strcmp(i,"process-name:")== 0) 205 { 206 if ((i=lgetw())==0) break; 207 if (strlen(i)>=PSNAMESIZE) i[PSNAMESIZE-1]=0; 208 strcpy(psname,i); 209 } 210 else if (strcmp(i,"play-day-play") == 0) dayplay=1; 211 break; 212 213 case 's': if (strcmp(i,"savefile:") == 0) /* defining savefilename */ 214 { 215 if ((i=lgetw())==0) break; 216 strcpy(savefilename,i); flag=0; 217 } 218 break; 219 }; 220 } 221 if (flag) strcpy(logname,loginname); 222 } 223 224
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