2 /* $FreeBSD: src/games/larn/main.c,v 1.9 1999/11/30 03:48:59 billf Exp $ */
3 /* $DragonFly: src/games/larn/main.c,v 1.2 2003/06/17 04:25:24 dillon Exp $ */
8 static const char copyright[]="\nLarn is copyrighted 1986 by Noah Morgan.\n";
9 int srcount=0; /* line counter for showstr() */
10 int dropflag=0; /* if 1 then don't lookforobject() next round */
11 int rmst=80; /* random monster creation counter */
12 int userid; /* the players login user id number */
13 char nowelcome=0,nomove=0; /* if (nomove) then don't count next iteration as a move */
14 static char viewflag=0;
15 /* if viewflag then we have done a 99 stay here and don't showcell in the main loop */
16 char restorflag=0; /* 1 means restore has been done */
17 static char cmdhelp[] = "\
18 Cmd line format: larn [-slicnh] [-o<optsifle>] [-##] [++]\n\
19 -s show the scoreboard\n\
20 -l show the logfile (wizard id only)\n\
21 -i show scoreboard with inventories of dead characters\n\
22 -c create new scoreboard (wizard id only)\n\
23 -n suppress welcome message on starting game\n\
24 -## specify level of difficulty (example: -5)\n\
25 -h print this help text\n\
26 ++ restore game from checkpoint file\n\
27 -o<optsfile> specify .larnopts filename to be used instead of \"~/.larnopts\"\n\
30 static char *termtypes[] = { "vt100", "vt101", "vt102", "vt103", "vt125",
31 "vt131", "vt140", "vt180", "vt220", "vt240", "vt241", "vt320", "vt340",
50 * first task is to identify the player
53 init_term(); /* setup the terminal (find out what type) for termcap */
55 if (((ptr = getlogin()) == 0) || (*ptr==0)) { /* try to get login name */
56 if (pwe=getpwuid(getuid())) /* can we get it from /etc/passwd? */
59 if ((ptr = getenv("USER")) == 0)
60 if ((ptr = getenv("LOGNAME")) == 0)
62 noone: write(2, "Can't find your logname. Who Are You?\n",39);
66 if (ptr==0) goto noone;
67 if (strlen(ptr)==0) goto noone;
69 * second task is to prepare the pathnames the player will need
71 strcpy(loginname,ptr); /* save loginname of the user for logging purposes */
72 strcpy(logname,ptr); /* this will be overwritten with the players name */
73 if ((ptr = getenv("HOME")) == 0) ptr = ".";
74 strcpy(savefilename, ptr);
75 strcat(savefilename, "/Larn.sav"); /* save file name in home directory */
76 sprintf(optsfile, "%s/.larnopts",ptr); /* the .larnopts filename */
79 * now malloc the memory for the dungeon
81 cell = (struct cel *)malloc(sizeof(struct cel)*(MAXLEVEL+MAXVLEVEL)*MAXX*MAXY);
82 if (cell == 0) died(-285); /* malloc failure */
83 lpbuf = malloc((5* BUFBIG)>>2); /* output buffer */
84 inbuffer = malloc((5*MAXIBUF)>>2); /* output buffer */
85 if ((lpbuf==0) || (inbuffer==0)) died(-285); /* malloc() failure */
87 lcreat((char*)0); newgame(); /* set the initial clock */ hard= -1;
91 * check terminal type to avoid users who have not vt100 type terminals
93 ttype = getenv("TERM");
94 for (j=1, i=0; i<sizeof(termtypes)/sizeof(char *); i++)
95 if (strcmp(ttype,termtypes[i]) == 0) { j=0; break; }
98 lprcat("Sorry, Larn needs a VT100 family terminal for all it's features.\n"); lflush();
104 * now make scoreboard if it is not there (don't clear)
106 if (stat(scorefile,&sb) < 0 || sb.st_size == 0) /* not there */
110 * now process the command line arguments
112 for (i=1; i<argc; i++)
114 if (argv[i][0] == '-')
117 case 's': showscores(); exit(0); /* show scoreboard */
119 case 'l': /* show log file */
122 case 'i': showallscores(); exit(0); /* show all scoreboard */
124 case 'c': /* anyone with password can create scoreboard */
125 lprcat("Preparing to initialize the scoreboard.\n");
126 if (getpassword() != 0) /*make new scoreboard*/
128 makeboard(); lprc('\n'); showscores();
132 case 'n': /* no welcome msg */ nowelcome=1; argv[i][0]=0; break;
134 case '0': case '1': case '2': case '3': case '4': case '5':
135 case '6': case '7': case '8': case '9': /* for hardness */
136 sscanf(&argv[i][1],"%d",&hard);
139 case 'h': /* print out command line arguments */
140 write(1,cmdhelp,sizeof(cmdhelp)); exit(0);
142 case 'o': /* specify a .larnopts filename */
143 strncpy(optsfile,argv[i]+2,127); break;
145 default: printf("Unknown option <%s>\n",argv[i]); exit(1);
148 if (argv[i][0] == '+')
150 clear(); restorflag = 1;
151 if (argv[i][1] == '+')
153 hitflag=1; restoregame(ckpfile); /* restore checkpointed game */
159 readopts(); /* read the options file if there is one */
163 userid = geteuid(); /* obtain the user's effective id number */
165 userid = getplid(logname); /* obtain the players id number */
167 if (userid < 0) { write(2,"Can't obtain playerid\n",22); exit(1); }
171 * this section of code causes the program to look like something else to ps
173 if (strcmp(psname,argv[0])) /* if a different process name only */
175 if ((i=access(psname,1)) < 0)
176 { /* link not there */
177 if (link(argv[0],psname)>=0)
179 argv[0] = psname; execv(psname,argv);
186 for (i=1; i<argc; i++)
188 szero(argv[i]); /* zero the argument to avoid ps snooping */
192 if (access(savefilename,0)==0) /* restore game if need to */
194 clear(); restorflag = 1;
195 hitflag=1; restoregame(savefilename); /* restore last game */
197 sigsetup(); /* trap all needed signals */
198 sethard(hard); /* set up the desired difficulty */
199 setupvt100(); /* setup the terminal special mode */
200 if (c[HP]==0) /* create new game */
202 makeplayer(); /* make the character that will play */
203 newcavelevel(0);/* make the dungeon */
204 predostuff = 1; /* tell signals that we are in the welcome screen */
205 if (nowelcome==0) welcome(); /* welcome the player to the game */
207 drawscreen(); /* show the initial dungeon */
208 predostuff = 2; /* tell the trap functions that they must do a showplayer()
210 /* nice(1); */ /* games should be run niced */
211 yrepcount = hit2flag = 0;
214 if (dropflag==0) lookforobject(); /* see if there is an object here */
215 else dropflag=0; /* don't show it just dropped an item */
216 if (hitflag==0) { if (c[HASTEMONST]) movemonst(); movemonst(); } /* move the monsters */
217 if (viewflag==0) showcell(playerx,playery); else viewflag=0; /* show stuff around player */
218 if (hit3flag) flushall();
219 hitflag=hit3flag=0; nomove=1;
220 bot_linex(); /* update bottom line */
223 if (hit3flag) flushall();
225 } /* get commands and make moves */
226 regen(); /* regenerate hp and spells */
229 { rmst = 120-(level<<2); fillmonst(makemonst(level)); }
236 show character's inventory
241 for (number=3, i=0; i<26; i++)
242 if (iven[i]) number++; /* count items in inventory */
243 t_setup(number); qshowstr(); t_endup(number);
249 srcount=0; sigsav=nosignal; nosignal=1; /* don't allow ^c etc */
250 if (c[GOLD]) { lprintf(".) %d gold pieces",(long)c[GOLD]); srcount++; }
251 for (k=26; k>=0; k--)
253 { for (i=22; i<84; i++)
254 for (j=0; j<=k; j++) if (i==iven[j]) show3(j); k=0; }
256 lprintf("\nElapsed time is %d. You have %d mobuls left",(long)((gtime+99)/100+1),(long)((TIMELIMIT-gtime)/100));
257 more(); nosignal=sigsav;
261 * subroutine to clear screen depending on # lines to display
266 if (count<20) /* how do we clear the screen? */
268 cl_up(79,count); cursor(1,1);
272 resetscroll(); clear();
277 * subroutine to restore normal display screen depending on t_setup()
282 if (count<18) /* how did we clear the screen? */
283 draws(0,MAXX,0,(count>MAXY) ? MAXY : count);
286 drawscreen(); setscroll();
291 function to show the things player is wearing only
295 int i,j,sigsav,count;
296 sigsav=nosignal; nosignal=1; /* don't allow ^c etc */
299 for (count=2,j=0; j<=26; j++) /* count number of items we will display */
303 case OLEATHER: case OPLATE: case OCHAIN:
304 case ORING: case OSTUDLEATHER: case OSPLINT:
305 case OPLATEARMOR: case OSSPLATE: case OSHIELD:
311 for (i=22; i<84; i++)
312 for (j=0; j<=26; j++)
316 case OLEATHER: case OPLATE: case OCHAIN:
317 case ORING: case OSTUDLEATHER: case OSPLINT:
318 case OPLATEARMOR: case OSSPLATE: case OSHIELD:
321 more(); nosignal=sigsav; t_endup(count);
325 function to show the things player can wield only
329 int i,j,sigsav,count;
330 sigsav=nosignal; nosignal=1; /* don't allow ^c etc */
333 for (count=2,j=0; j<=26; j++) /* count how many items */
337 case ODIAMOND: case ORUBY: case OEMERALD: case OSAPPHIRE:
338 case OBOOK: case OCHEST: case OLARNEYE: case ONOTHEFT:
339 case OSPIRITSCARAB: case OCUBEofUNDEAD:
340 case OPOTION: case OSCROLL: break;
346 for (i=22; i<84; i++)
347 for (j=0; j<=26; j++)
351 case ODIAMOND: case ORUBY: case OEMERALD: case OSAPPHIRE:
352 case OBOOK: case OCHEST: case OLARNEYE: case ONOTHEFT:
353 case OSPIRITSCARAB: case OCUBEofUNDEAD:
354 case OPOTION: case OSCROLL: break;
357 more(); nosignal=sigsav; t_endup(count);
361 * function to show the things player can read only
365 int i,j,sigsav,count;
366 sigsav=nosignal; nosignal=1; /* don't allow ^c etc */
369 for (count=2,j=0; j<=26; j++)
372 case OBOOK: case OSCROLL: count++;
376 for (i=22; i<84; i++)
377 for (j=0; j<=26; j++)
381 case OBOOK: case OSCROLL: show3(j);
383 more(); nosignal=sigsav; t_endup(count);
387 * function to show the things player can eat only
391 int i,j,sigsav,count;
392 sigsav=nosignal; nosignal=1; /* don't allow ^c etc */
395 for (count=2,j=0; j<=26; j++)
398 case OCOOKIE: count++;
402 for (i=22; i<84; i++)
403 for (j=0; j<=26; j++)
407 case OCOOKIE: show3(j);
409 more(); nosignal=sigsav; t_endup(count);
413 function to show the things player can quaff only
417 int i,j,sigsav,count;
418 sigsav=nosignal; nosignal=1; /* don't allow ^c etc */
421 for (count=2,j=0; j<=26; j++)
424 case OPOTION: count++;
428 for (i=22; i<84; i++)
429 for (j=0; j<=26; j++)
433 case OPOTION: show3(j);
435 more(); nosignal=sigsav; t_endup(count);
442 if (str2==0) lprintf("\n%c) %s",idx+'a',objectname[iven[idx]]);
443 else if (*str2[ivenarg[idx]]==0) lprintf("\n%c) %s",idx+'a',objectname[iven[idx]]);
444 else lprintf("\n%c) %s of%s",idx+'a',objectname[iven[idx]],str2[ivenarg[idx]]);
452 case OPOTION: show1(index,potionname); break;
453 case OSCROLL: show1(index,scrollname); break;
455 case OLARNEYE: case OBOOK: case OSPIRITSCARAB:
456 case ODIAMOND: case ORUBY: case OCUBEofUNDEAD:
457 case OEMERALD: case OCHEST: case OCOOKIE:
458 case OSAPPHIRE: case ONOTHEFT: show1(index,(char **)0); break;
460 default: lprintf("\n%c) %s",index+'a',objectname[iven[index]]);
461 if (ivenarg[index]>0) lprintf(" + %d",(long)ivenarg[index]);
462 else if (ivenarg[index]<0) lprintf(" %d",(long)ivenarg[index]);
465 if (c[WIELD]==index) lprcat(" (weapon in hand)");
466 if ((c[WEAR]==index) || (c[SHIELD]==index)) lprcat(" (being worn)");
467 if (++srcount>=22) { srcount=0; more(); clear(); }
471 subroutine to randomly create monsters if needed
475 if (c[TIMESTOP]) return; /* don't make monsters if time is stopped */
478 rmst = 120 - (level<<2); fillmonst(makemonst(level));
486 get and execute a command
494 switch(k) /* get the token from the input and switch on it */
496 case 'h': moveplayer(4); return; /* west */
497 case 'H': run(4); return; /* west */
498 case 'l': moveplayer(2); return; /* east */
499 case 'L': run(2); return; /* east */
500 case 'j': moveplayer(1); return; /* south */
501 case 'J': run(1); return; /* south */
502 case 'k': moveplayer(3); return; /* north */
503 case 'K': run(3); return; /* north */
504 case 'u': moveplayer(5); return; /* northeast */
505 case 'U': run(5); return; /* northeast */
506 case 'y': moveplayer(6); return; /* northwest */
507 case 'Y': run(6); return; /* northwest */
508 case 'n': moveplayer(7); return; /* southeast */
509 case 'N': run(7); return; /* southeast */
510 case 'b': moveplayer(8); return; /* southwest */
511 case 'B': run(8); return; /* southwest */
513 case '.': if (yrepcount) viewflag=1; return; /* stay here */
515 case 'w': yrepcount=0; wield(); return; /* wield a weapon */
517 case 'W': yrepcount=0; wear(); return; /* wear armor */
519 case 'r': yrepcount=0;
520 if (c[BLINDCOUNT]) { cursors(); lprcat("\nYou can't read anything when you're blind!"); } else
521 if (c[TIMESTOP]==0) readscr(); return; /* to read a scroll */
523 case 'q': yrepcount=0; if (c[TIMESTOP]==0) quaff(); return; /* quaff a potion */
525 case 'd': yrepcount=0; if (c[TIMESTOP]==0) dropobj(); return; /* to drop an object */
527 case 'c': yrepcount=0; cast(); return; /* cast a spell */
529 case 'i': yrepcount=0; nomove=1; showstr(); return; /* status */
531 case 'e': yrepcount=0;
532 if (c[TIMESTOP]==0) eatcookie(); return; /* to eat a fortune cookie */
534 case 'D': yrepcount=0; seemagic(0); nomove=1; return; /* list spells and scrolls */
536 case '?': yrepcount=0; help(); nomove=1; return; /* give the help screen*/
538 case 'S': clear(); lprcat("Saving . . ."); lflush();
539 savegame(savefilename); wizard=1; died(-257); /* save the game - doesn't return */
541 case 'Z': yrepcount=0; if (c[LEVEL]>9) { oteleport(1); return; }
542 cursors(); lprcat("\nAs yet, you don't have enough experience to use teleportation");
543 return; /* teleport yourself */
545 case '^': /* identify traps */ flag=yrepcount=0; cursors();
546 lprc('\n'); for (j=playery-1; j<playery+2; j++)
548 if (j < 0) j=0; if (j >= MAXY) break;
549 for (i=playerx-1; i<playerx+2; i++)
551 if (i < 0) i=0; if (i >= MAXX) break;
554 case OTRAPDOOR: case ODARTRAP:
555 case OTRAPARROW: case OTELEPORTER:
556 lprcat("\nIts "); lprcat(objectname[item[i][j]]); flag++;
560 if (flag==0) lprcat("\nNo traps are visible");
564 case '_': /* this is the fudge player password for wizard mode*/
565 yrepcount=0; cursors(); nomove=1;
568 lprcat("Sorry, you are not empowered to be a wizard.\n");
569 scbr(); /* system("stty -echo cbreak"); */
572 if (getpassword()==0)
574 scbr(); /* system("stty -echo cbreak"); */ return;
576 wizard=1; scbr(); /* system("stty -echo cbreak"); */
577 for (i=0; i<6; i++) c[i]=70; iven[0]=iven[1]=0;
578 take(OPROTRING,50); take(OLANCE,25); c[WIELD]=1;
579 c[LANCEDEATH]=1; c[WEAR] = c[SHIELD] = -1;
580 raiseexperience(6000000L); c[AWARENESS] += 25000;
583 for (i=0; i<MAXY; i++)
584 for (j=0; j<MAXX; j++) know[j][i]=1;
585 for (i=0; i<SPNUM; i++) spelknow[i]=1;
586 for (i=0; i<MAXSCROLL; i++) scrollname[i][0]=' ';
587 for (i=0; i<MAXPOTION; i++) potionname[i][0]=' ';
589 for (i=0; i<MAXSCROLL; i++)
590 if (strlen(scrollname[i])>2) /* no null items */
591 { item[i][0]=OSCROLL; iarg[i][0]=i; }
592 for (i=MAXX-1; i>MAXX-1-MAXPOTION; i--)
593 if (strlen(potionname[i-MAXX+MAXPOTION])>2) /* no null items */
594 { item[i][0]=OPOTION; iarg[i][0]=i-MAXX+MAXPOTION; }
595 for (i=1; i<MAXY; i++)
596 { item[0][i]=i; iarg[0][i]=0; }
597 for (i=MAXY; i<MAXY+MAXX; i++)
598 { item[i-MAXY][MAXY-1]=i; iarg[i-MAXY][MAXY-1]=0; }
599 for (i=MAXX+MAXY; i<MAXX+MAXY+MAXY; i++)
600 { item[MAXX-1][i-MAXX-MAXY]=i; iarg[MAXX-1][i-MAXX-MAXY]=0; }
601 c[GOLD]+=25000; drawscreen(); return;
604 case 'T': yrepcount=0; cursors(); if (c[SHIELD] != -1) { c[SHIELD] = -1; lprcat("\nYour shield is off"); bottomline(); } else
605 if (c[WEAR] != -1) { c[WEAR] = -1; lprcat("\nYour armor is off"); bottomline(); }
606 else lprcat("\nYou aren't wearing anything");
610 lprintf("\nThe stuff you are carrying presently weighs %d pounds",(long)packweight());
611 case ' ': yrepcount=0; nomove=1; return;
613 case 'v': yrepcount=0; cursors();
614 lprintf("\nCaverns of Larn, Version %d.%d, Diff=%d",(long)VERSION,(long)SUBVERSION,(long)c[HARDGAME]);
615 if (wizard) lprcat(" Wizard"); nomove=1;
616 if (cheat) lprcat(" Cheater");
620 case 'Q': yrepcount=0; quit(); nomove=1; return; /* quit */
622 case 'L'-64: yrepcount=0; drawscreen(); nomove=1; return; /* look */
626 case 'A': yrepcount=0; nomove=1; if (wizard) { diag(); return; } /* create diagnostic file */
631 if (outstanding_taxes>0)
632 lprintf("\nYou presently owe %d gp in taxes.",(long)outstanding_taxes);
634 lprcat("\nYou do not owe any taxes.");
642 if (c[HASTEMONST]) movemonst(); movemonst(); /* move the monsters */
643 randmonst(); regen();
653 if (i>0) { if (c[HASTEMONST]) movemonst(); movemonst(); randmonst(); regen(); }
655 if (i!=0) showcell(playerx,playery);
660 function to wield a weapon
667 if ((i = whatitem("wield"))=='\33') return;
670 if (i=='*') showwield();
671 else if (iven[i-'a']==0) { ydhi(i); return; }
672 else if (iven[i-'a']==OPOTION) { ycwi(i); return; }
673 else if (iven[i-'a']==OSCROLL) { ycwi(i); return; }
674 else if ((c[SHIELD]!= -1) && (iven[i-'a']==O2SWORD)) { lprcat("\nBut one arm is busy with your shield!"); return; }
675 else { c[WIELD]=i-'a'; if (iven[i-'a'] == OLANCE) c[LANCEDEATH]=1; else c[LANCEDEATH]=0; bottomline(); return; }
681 common routine to say you don't have an item
685 { cursors(); lprintf("\nYou don't have item %c!",x); }
688 { cursors(); lprintf("\nYou can't wield item %c!",x); }
691 function to wear armor
698 if ((i = whatitem("wear"))=='\33') return;
701 if (i=='*') showwear(); else
704 case 0: ydhi(i); return;
705 case OLEATHER: case OCHAIN: case OPLATE: case OSTUDLEATHER:
706 case ORING: case OSPLINT: case OPLATEARMOR: case OSSPLATE:
707 if (c[WEAR] != -1) { lprcat("\nYou're already wearing some armor"); return; }
708 c[WEAR]=i-'a'; bottomline(); return;
709 case OSHIELD: if (c[SHIELD] != -1) { lprcat("\nYou are already wearing a shield"); return; }
710 if (iven[c[WIELD]]==O2SWORD) { lprcat("\nYour hands are busy with the two handed sword!"); return; }
711 c[SHIELD] = i-'a'; bottomline(); return;
712 default: lprcat("\nYou can't wear that!");
719 function to drop an object
726 p = &item[playerx][playery];
729 if ((i = whatitem("drop"))=='\33') return;
730 if (i=='*') showstr(); else
732 if (i=='.') /* drop some gold */
734 if (*p) { lprcat("\nThere's something here already!"); return; }
737 lprcat("How much gold do you drop? ");
738 if ((amt=readnum((long)c[GOLD])) == 0) return;
740 { lprcat("\nYou don't have that much!"); return; }
742 { *p=OGOLDPILE; i=amt; }
743 else if (amt<=327670L)
744 { *p=ODGOLD; i=amt/10; amt = 10*i; }
745 else if (amt<=3276700L)
746 { *p=OMAXGOLD; i=amt/100; amt = 100*i; }
747 else if (amt<=32767000L)
748 { *p=OKGOLD; i=amt/1000; amt = 1000*i; }
750 { *p=OKGOLD; i=32767; amt = 32767000L; }
752 lprintf("You drop %d gold pieces",(long)amt);
753 iarg[playerx][playery]=i; bottomgold();
754 know[playerx][playery]=0; dropflag=1; return;
763 * readscr() Subroutine to read a scroll one is carrying
770 if ((i = whatitem("read"))=='\33') return;
773 if (i=='*') showread(); else
775 if (iven[i-'a']==OSCROLL) { read_scroll(ivenarg[i-'a']); iven[i-'a']=0; return; }
776 if (iven[i-'a']==OBOOK) { readbook(ivenarg[i-'a']); iven[i-'a']=0; return; }
777 if (iven[i-'a']==0) { ydhi(i); return; }
778 lprcat("\nThere's nothing on it to read"); return;
785 * subroutine to eat a cookie one is carrying
793 if ((i = whatitem("eat"))=='\33') return;
795 if (i=='*') showeat(); else
797 if (iven[i-'a']==OCOOKIE)
799 lprcat("\nThe cookie was delicious.");
803 if (p=fortune(fortfile))
805 lprcat(" Inside you find a scrap of paper that says:\n");
811 if (iven[i-'a']==0) { ydhi(i); return; }
812 lprcat("\nYou can't eat that!"); return;
819 * subroutine to quaff a potion one is carrying
826 if ((i = whatitem("quaff"))=='\33') return;
829 if (i=='*') showquaff(); else
831 if (iven[i-'a']==OPOTION) { quaffpotion(ivenarg[i-'a']); iven[i-'a']=0; return; }
832 if (iven[i-'a']==0) { ydhi(i); return; }
833 lprcat("\nYou wouldn't want to quaff that, would you? "); return;
840 function to ask what player wants to do
846 cursors(); lprintf("\nWhat do you want to %s [* for all] ? ",str);
847 i=0; while (i>'z' || (i<'a' && i!='*' && i!='\33' && i!='.')) i=getchar();
848 if (i=='\33') lprcat(" aborted");
853 subroutine to get a number from the player
854 and allow * to mean return amt, else return the number entered
856 unsigned long readnum(mx)
862 if ((i=getchar()) == '*') amt = mx; /* allow him to say * for all gold */
866 if (i=='\033') { scbr(); lprcat(" aborted"); return(0); }
867 if ((i <= '9') && (i >= '0') && (amt<99999999))
876 * routine to zero every byte in a string