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C/C++ Source or Header  |  1985-11-22  |  23.1 KB  |  974 lines
  1. /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
  2. /* hack.shk.c - version 1.0.3 */
  3.  
  4. #include "hack.h"
  5. #ifdef QUEST
  6. int shlevel = 0;
  7. struct monst *shopkeeper = 0;
  8. struct obj *billobjs = 0;
  9. obfree(obj,merge) register struct obj *obj, *merge; {
  10.     free((char *) obj);
  11. }
  12. inshop(){ return(0); }
  13. addtobill(){}
  14. subfrombill(){}
  15. splitbill(){}
  16. dopay(){ return(0); }
  17. paybill(){}
  18. doinvbill(){ return(0); }
  19. shkdead(){}
  20. shkcatch(){ return(0); }
  21. shk_move(){ return(0); }
  22. replshk(mtmp,mtmp2) struct monst *mtmp, *mtmp2; {}
  23. char *shkname(){ return(""); }
  24.  
  25. #else QUEST
  26. #include    "hack.mfndpos.h"
  27. #include    "def.mkroom.h"
  28. #include    "def.eshk.h"
  29.  
  30. #define    ESHK(mon)    ((struct eshk *)(&(mon->mextra[0])))
  31. #define    NOTANGRY(mon)    mon->mpeaceful
  32. #define    ANGRY(mon)    !NOTANGRY(mon)
  33.  
  34. extern char plname[], *xname();
  35. extern struct obj *o_on(), *bp_to_obj();
  36.  
  37. /* Descriptor of current shopkeeper. Note that the bill need not be
  38.    per-shopkeeper, since it is valid only when in a shop. */
  39. static struct monst *shopkeeper = 0;
  40. static struct bill_x *bill;
  41. static int shlevel = 0;    /* level of this shopkeeper */
  42.        struct obj *billobjs;    /* objects on bill with bp->useup */
  43.                 /* only accessed here and by save & restore */
  44. static long int total;        /* filled by addupbill() */
  45. static long int followmsg;    /* last time of follow message */
  46.  
  47. /*
  48.     invariants: obj->unpaid iff onbill(obj) [unless bp->useup]
  49.         obj->quan <= bp->bquan
  50.  */
  51.  
  52.  
  53. char shtypes[] = {    /* 8 shoptypes: 7 specialized, 1 mixed */
  54.     RING_SYM, WAND_SYM, WEAPON_SYM, FOOD_SYM, SCROLL_SYM,
  55.     POTION_SYM, ARMOR_SYM, 0
  56. };
  57.  
  58. static char *shopnam[] = {
  59.     "engagement ring", "walking cane", "antique weapon",
  60.     "delicatessen", "second hand book", "liquor",
  61.     "used armor", "assorted antiques"
  62. };
  63.  
  64. char *
  65. shkname(mtmp)                /* called in do_name.c */
  66. register struct monst *mtmp;
  67. {
  68.     return(ESHK(mtmp)->shknam);
  69. }
  70.  
  71. shkdead(mtmp)                /* called in mon.c */
  72. register struct monst *mtmp;
  73. {
  74.     register struct eshk *eshk = ESHK(mtmp);
  75.  
  76.     if(eshk->shoplevel == dlevel)
  77.         rooms[eshk->shoproom].rtype = 0;
  78.     if(mtmp == shopkeeper) {
  79.         setpaid();
  80.         shopkeeper = 0;
  81.         bill = (struct bill_x *) -1000;    /* dump core when referenced */
  82.     }
  83. }
  84.  
  85. replshk(mtmp,mtmp2)
  86. register struct monst *mtmp, *mtmp2;
  87. {
  88.     if(mtmp == shopkeeper) {
  89.         shopkeeper = mtmp2;
  90.         bill = &(ESHK(shopkeeper)->bill[0]);
  91.     }
  92. }
  93.  
  94. static
  95. setpaid(){    /* caller has checked that shopkeeper exists */
  96.         /* either we paid or left the shop or he just died */
  97. register struct obj *obj;
  98. register struct monst *mtmp;
  99.     for(obj = invent; obj; obj = obj->nobj)
  100.         obj->unpaid = 0;
  101.     for(obj = fobj; obj; obj = obj->nobj)
  102.         obj->unpaid = 0;
  103.     for(obj = fcobj; obj; obj = obj->nobj)
  104.         obj->unpaid = 0;
  105.     for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
  106.         for(obj = mtmp->minvent; obj; obj = obj->nobj)
  107.             obj->unpaid = 0;
  108.     for(mtmp = fallen_down; mtmp; mtmp = mtmp->nmon)
  109.         for(obj = mtmp->minvent; obj; obj = obj->nobj)
  110.             obj->unpaid = 0;
  111.     while(obj = billobjs){
  112.         billobjs = obj->nobj;
  113.         free((char *) obj);
  114.     }
  115.     ESHK(shopkeeper)->billct = 0;
  116. }
  117.  
  118. static
  119. addupbill(){    /* delivers result in total */
  120.         /* caller has checked that shopkeeper exists */
  121. register ct = ESHK(shopkeeper)->billct;
  122. register struct bill_x *bp = bill;
  123.     total = 0;
  124.     while(ct--){
  125.         total += bp->price * bp->bquan;
  126.         bp++;
  127.     }
  128. }
  129.  
  130. inshop(){
  131. register roomno = inroom(u.ux,u.uy);
  132.  
  133.     /* Did we just leave a shop? */
  134.     if(u.uinshop &&
  135.         (u.uinshop != roomno + 1 || shlevel != dlevel || !shopkeeper)) {
  136.         if(shopkeeper) {
  137.             if(ESHK(shopkeeper)->billct) {
  138.              if(inroom(shopkeeper->mx, shopkeeper->my) 
  139.                  == u.uinshop - 1)    /* ab@unido */
  140.                  pline("Somehow you escaped the shop without paying!");
  141.             addupbill();
  142.             pline("You stole for a total worth of %ld zorkmids.",
  143.                 total);
  144.             ESHK(shopkeeper)->robbed += total;
  145.             setpaid();
  146.             if((rooms[ESHK(shopkeeper)->shoproom].rtype == GENERAL)
  147.                 == (rn2(3) == 0))
  148.                 ESHK(shopkeeper)->following = 1;
  149.             }
  150.             shopkeeper = 0;
  151.             shlevel = 0;
  152.         }
  153.          u.uinshop = 0;
  154.     }
  155.  
  156.     /* Did we just enter a zoo of some kind? */
  157.     if(roomno >= 0) {
  158.         register int rt = rooms[roomno].rtype;
  159.         register struct monst *mtmp;
  160.         if(rt == ZOO) {
  161.             pline("Welcome to David's treasure zoo!");
  162.         } else
  163.         if(rt == SWAMP) {
  164.             pline("It looks rather muddy down here.");
  165.         } else
  166.         if(rt == MORGUE) {
  167.             if(midnight())
  168.                 pline("Go away! Go away!");
  169.             else
  170.                 pline("You get an uncanny feeling ...");
  171.         } else
  172.             rt = 0;
  173.         if(rt != 0) {
  174.             rooms[roomno].rtype = 0;
  175.             for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
  176.                 if(rt != ZOO || !rn2(3))
  177.                     mtmp->msleep = 0;
  178.         }
  179.     }
  180.  
  181.     /* Did we just enter a shop? */
  182.     if(roomno >= 0 && rooms[roomno].rtype >= 8) {
  183.         if(shlevel != dlevel || !shopkeeper
  184.                  || ESHK(shopkeeper)->shoproom != roomno)
  185.         findshk(roomno);
  186.         if(!shopkeeper) {
  187.         rooms[roomno].rtype = 0;
  188.         u.uinshop = 0;
  189.         } else if(!u.uinshop){
  190.         if(!ESHK(shopkeeper)->visitct ||
  191.             strncmp(ESHK(shopkeeper)->customer, plname, PL_NSIZ)){
  192.  
  193.             /* He seems to be new here */
  194.             ESHK(shopkeeper)->visitct = 0;
  195.             ESHK(shopkeeper)->following = 0;
  196.             (void) strncpy(ESHK(shopkeeper)->customer,plname,PL_NSIZ);
  197.             NOTANGRY(shopkeeper) = 1;
  198.         }
  199.         if(!ESHK(shopkeeper)->following) {
  200.             boolean box, pick;
  201.  
  202.             pline("Hello %s! Welcome%s to %s's %s shop!",
  203.             plname,
  204.             ESHK(shopkeeper)->visitct++ ? " again" : "",
  205.             shkname(shopkeeper),
  206.             shopnam[rooms[ESHK(shopkeeper)->shoproom].rtype - 8] );
  207.             box = carrying(ICE_BOX);
  208.             pick = carrying(PICK_AXE);
  209.             if(box || pick) {
  210.             if(dochug(shopkeeper)) {
  211.                 u.uinshop = 0;    /* he died moving */
  212.                 return(0);
  213.             }
  214.             pline("Will you please leave your %s outside?",
  215.                 (box && pick) ? "box and pick-axe" :
  216.                 box ? "box" : "pick-axe");
  217.             }
  218.         }
  219.         u.uinshop = roomno + 1;
  220.         }
  221.     }
  222.     return(u.uinshop);
  223. }
  224.  
  225. static
  226. findshk(roomno)
  227. register roomno;
  228. {
  229. register struct monst *mtmp;
  230.     for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
  231.         if(mtmp->isshk && ESHK(mtmp)->shoproom == roomno
  232.                && ESHK(mtmp)->shoplevel == dlevel) {
  233.         shopkeeper = mtmp;
  234.         bill = &(ESHK(shopkeeper)->bill[0]);
  235.         shlevel = dlevel;
  236.         if(ANGRY(shopkeeper) &&
  237.            strncmp(ESHK(shopkeeper)->customer,plname,PL_NSIZ))
  238.             NOTANGRY(shopkeeper) = 1;
  239.         /* billobjs = 0; -- this is wrong if we save in a shop */
  240.         /* (and it is harmless to have too many things in billobjs) */
  241.         return;
  242.     }
  243.     shopkeeper = 0;
  244.     shlevel = 0;
  245.     bill = (struct bill_x *) -1000;    /* dump core when referenced */
  246. }
  247.  
  248. static struct bill_x *
  249. onbill(obj) register struct obj *obj; {
  250. register struct bill_x *bp;
  251.     if(!shopkeeper) return(0);
  252.     for(bp = bill; bp < &bill[ESHK(shopkeeper)->billct]; bp++)
  253.         if(bp->bo_id == obj->o_id) {
  254.             if(!obj->unpaid) pline("onbill: paid obj on bill?");
  255.             return(bp);
  256.         }
  257.     if(obj->unpaid) pline("onbill: unpaid obj not on bill?");
  258.     return(0);
  259. }
  260.  
  261. /* called with two args on merge */
  262. obfree(obj,merge) register struct obj *obj, *merge; {
  263. register struct bill_x *bp = onbill(obj);
  264. register struct bill_x *bpm;
  265.     if(bp) {
  266.         if(!merge){
  267.             bp->useup = 1;
  268.             obj->unpaid = 0;    /* only for doinvbill */
  269.             obj->nobj = billobjs;
  270.             billobjs = obj;
  271.             return;
  272.         }
  273.         bpm = onbill(merge);
  274.         if(!bpm){
  275.             /* this used to be a rename */
  276.             impossible("obfree: not on bill??");
  277.             return;
  278.         } else {
  279.             /* this was a merger */
  280.             bpm->bquan += bp->bquan;
  281.             ESHK(shopkeeper)->billct--;
  282.             *bp = bill[ESHK(shopkeeper)->billct];
  283.         }
  284.     }
  285.     free((char *) obj);
  286. }
  287.  
  288. static
  289. pay(tmp,shkp)
  290. long tmp;
  291. register struct monst *shkp;
  292. {
  293.     long robbed = ESHK(shkp)->robbed;
  294.  
  295.     u.ugold -= tmp;
  296.     shkp->mgold += tmp;
  297.     flags.botl = 1;
  298.     if(robbed) {
  299.         robbed -= tmp;
  300.         if(robbed < 0) robbed = 0;
  301.         ESHK(shkp)->robbed = robbed;
  302.     }
  303. }
  304.  
  305. dopay(){
  306. long ltmp;
  307. register struct bill_x *bp;
  308. register struct monst *shkp;
  309. int pass, tmp;
  310.  
  311.     multi = 0;
  312.     (void) inshop();
  313.     for(shkp = fmon; shkp; shkp = shkp->nmon)
  314.         if(shkp->isshk && dist(shkp->mx,shkp->my) < 3)
  315.             break;
  316.     if(!shkp && u.uinshop &&
  317.        inroom(shopkeeper->mx,shopkeeper->my) == ESHK(shopkeeper)->shoproom)
  318.         shkp = shopkeeper;
  319.  
  320.     if(!shkp) {
  321.         pline("There is nobody here to receive your payment.");
  322.         return(0);
  323.     }
  324.     ltmp = ESHK(shkp)->robbed;
  325.     if(shkp != shopkeeper && NOTANGRY(shkp)) {
  326.         if(!ltmp) {
  327.             pline("You do not owe %s anything.", monnam(shkp));
  328.         } else
  329.         if(!u.ugold) {
  330.             pline("You have no money.");
  331.         } else {
  332.             long ugold = u.ugold;
  333.  
  334.             if(u.ugold > ltmp) {
  335.             pline("You give %s the %ld gold pieces he asked for.",
  336.                 monnam(shkp), ltmp);
  337.             pay(ltmp, shkp);
  338.             } else {
  339.             pline("You give %s all your gold.", monnam(shkp));
  340.             pay(u.ugold, shkp);
  341.             }
  342.             if(ugold < ltmp/2) {
  343.             pline("Unfortunately, he doesn't look satisfied.");
  344.             } else {
  345.             ESHK(shkp)->robbed = 0;
  346.             ESHK(shkp)->following = 0;
  347.             if(ESHK(shkp)->shoplevel != dlevel) {
  348.             /* For convenience's sake, let him disappear */
  349.                 shkp->minvent = 0;        /* %% */
  350.                 shkp->mgold = 0;
  351.                 mondead(shkp);
  352.             }
  353.             }
  354.         }
  355.         return(1);
  356.     }
  357.         
  358.     if(!ESHK(shkp)->billct){
  359.         pline("You do not owe %s anything.", monnam(shkp));
  360.         if(!u.ugold){
  361.             pline("Moreover, you have no money.");
  362.             return(1);
  363.         }
  364.         if(ESHK(shkp)->robbed){
  365. #define min(a,b)    ((a<b)?a:b)
  366.             pline("But since his shop has been robbed recently,");
  367.             pline("you %srepay %s's expenses.",
  368.               (u.ugold < ESHK(shkp)->robbed) ? "partially " : "",
  369.               monnam(shkp));
  370.             pay(min(u.ugold, ESHK(shkp)->robbed), shkp);
  371.             ESHK(shkp)->robbed = 0;
  372.             return(1);
  373.         }
  374.         if(ANGRY(shkp)){
  375.             pline("But in order to appease %s,",
  376.                 amonnam(shkp, "angry"));
  377.             if(u.ugold >= 1000){
  378.                 ltmp = 1000;
  379.                 pline(" you give him 1000 gold pieces.");
  380.             } else {
  381.                 ltmp = u.ugold;
  382.                 pline(" you give him all your money.");
  383.             }
  384.             pay(ltmp, shkp);
  385.             if(strncmp(ESHK(shkp)->customer, plname, PL_NSIZ)
  386.                || rn2(3)){
  387.                 pline("%s calms down.", Monnam(shkp));
  388.                 NOTANGRY(shkp) = 1;
  389.             } else    pline("%s is as angry as ever.",
  390.                     Monnam(shkp));
  391.         }
  392.         return(1);
  393.     }
  394.     if(shkp != shopkeeper) {
  395.         impossible("dopay: not to shopkeeper?");
  396.         if(shopkeeper) setpaid();
  397.         return(0);
  398.     }
  399.     for(pass = 0; pass <= 1; pass++) {
  400.         tmp = 0;
  401.         while(tmp < ESHK(shopkeeper)->billct) {
  402.             bp = &bill[tmp];
  403.             if(!pass && !bp->useup) {
  404.                 tmp++;
  405.                 continue;
  406.             }
  407.             if(!dopayobj(bp)) return(1);
  408.             bill[tmp] = bill[--ESHK(shopkeeper)->billct];
  409.         }
  410.     }
  411.     pline("Thank you for shopping in %s's %s store!",
  412.         shkname(shopkeeper),
  413.         shopnam[rooms[ESHK(shopkeeper)->shoproom].rtype - 8]);
  414.     NOTANGRY(shopkeeper) = 1;
  415.     return(1);
  416. }
  417.  
  418. /* return 1 if paid successfully */
  419. /*        0 if not enough money */
  420. /*       -1 if object could not be found (but was paid) */
  421. static
  422. dopayobj(bp) register struct bill_x *bp; {
  423. register struct obj *obj;
  424. long ltmp;
  425.  
  426.     /* find the object on one of the lists */
  427.     obj = bp_to_obj(bp);
  428.  
  429.     if(!obj) {
  430.         impossible("Shopkeeper administration out of order.");
  431.         setpaid();    /* be nice to the player */
  432.         return(0);
  433.     }
  434.  
  435.     if(!obj->unpaid && !bp->useup){
  436.         impossible("Paid object on bill??");
  437.         return(1);
  438.     }
  439.     obj->unpaid = 0;
  440.     ltmp = bp->price * bp->bquan;
  441.     if(ANGRY(shopkeeper)) ltmp += ltmp/3;
  442.     if(u.ugold < ltmp){
  443.         pline("You don't have gold enough to pay %s.",
  444.             doname(obj));
  445.         obj->unpaid = 1;
  446.         return(0);
  447.     }
  448.     pay(ltmp, shopkeeper);
  449.     pline("You bought %s for %ld gold piece%s.",
  450.         doname(obj), ltmp, plur(ltmp));
  451.     if(bp->useup) {
  452.         register struct obj *otmp = billobjs;
  453.         if(obj == billobjs)
  454.             billobjs = obj->nobj;
  455.         else {
  456.             while(otmp && otmp->nobj != obj) otmp = otmp->nobj;
  457.             if(otmp) otmp->nobj = obj->nobj;
  458.             else pline("Error in shopkeeper administration.");
  459.         }
  460.         free((char *) obj);
  461.     }
  462.     return(1);
  463. }
  464.  
  465. /* routine called after dying (or quitting) with nonempty bill */
  466. paybill(){
  467.     if(shlevel == dlevel && shopkeeper && ESHK(shopkeeper)->billct){
  468.         addupbill();
  469.         if(total > u.ugold){
  470.             shopkeeper->mgold += u.ugold;
  471.             u.ugold = 0;
  472.         pline("%s comes and takes all your possessions.",
  473.             Monnam(shopkeeper));
  474.         } else {
  475.             u.ugold -= total;
  476.             shopkeeper->mgold += total;
  477.     pline("%s comes and takes the %ld zorkmids you owed him.",
  478.         Monnam(shopkeeper), total);
  479.         }
  480.         setpaid();    /* in case we create bones */
  481.     }
  482. }
  483.  
  484. /* find obj on one of the lists */
  485. struct obj *
  486. bp_to_obj(bp)
  487. register struct bill_x *bp;
  488. {
  489.     register struct obj *obj;
  490.     register struct monst *mtmp;
  491.     register unsigned id = bp->bo_id;
  492.  
  493.     if(bp->useup)
  494.         obj = o_on(id, billobjs);
  495.     else if(!(obj = o_on(id, invent)) &&
  496.         !(obj = o_on(id, fobj)) &&
  497.         !(obj = o_on(id, fcobj))) {
  498.             for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
  499.             if(obj = o_on(id, mtmp->minvent))
  500.                 break;
  501.             for(mtmp = fallen_down; mtmp; mtmp = mtmp->nmon)
  502.             if(obj = o_on(id, mtmp->minvent))
  503.                 break;
  504.         }
  505.     return(obj);
  506. }
  507.  
  508. /* called in hack.c when we pickup an object */
  509. addtobill(obj) register struct obj *obj; {
  510. register struct bill_x *bp;
  511.     if(!inshop() ||
  512.     (u.ux == ESHK(shopkeeper)->shk.x && u.uy == ESHK(shopkeeper)->shk.y) ||
  513.     (u.ux == ESHK(shopkeeper)->shd.x && u.uy == ESHK(shopkeeper)->shd.y) ||
  514.         onbill(obj) /* perhaps we threw it away earlier */
  515.       ) return;
  516.     if(ESHK(shopkeeper)->billct == BILLSZ){
  517.         pline("You got that for free!");
  518.         return;
  519.     }
  520.     bp = &bill[ESHK(shopkeeper)->billct];
  521.     bp->bo_id = obj->o_id;
  522.     bp->bquan = obj->quan;
  523.     bp->useup = 0;
  524.     bp->price = getprice(obj);
  525.     ESHK(shopkeeper)->billct++;
  526.     obj->unpaid = 1;
  527. }
  528.  
  529. splitbill(obj,otmp) register struct obj *obj, *otmp; {
  530.     /* otmp has been split off from obj */
  531. register struct bill_x *bp;
  532. register int tmp;
  533.     bp = onbill(obj);
  534.     if(!bp) {
  535.         impossible("splitbill: not on bill?");
  536.         return;
  537.     }
  538.     if(bp->bquan < otmp->quan) {
  539.         impossible("Negative quantity on bill??");
  540.     }
  541.     if(bp->bquan == otmp->quan) {
  542.         impossible("Zero quantity on bill??");
  543.     }
  544.     bp->bquan -= otmp->quan;
  545.  
  546.     /* addtobill(otmp); */
  547.     if(ESHK(shopkeeper)->billct == BILLSZ) otmp->unpaid = 0;
  548.     else {
  549.         tmp = bp->price;
  550.         bp = &bill[ESHK(shopkeeper)->billct];
  551.         bp->bo_id = otmp->o_id;
  552.         bp->bquan = otmp->quan;
  553.         bp->useup = 0;
  554.         bp->price = tmp;
  555.         ESHK(shopkeeper)->billct++;
  556.     }
  557. }
  558.  
  559. subfrombill(obj) register struct obj *obj; {
  560. long ltmp;
  561. register int tmp;
  562. register struct obj *otmp;
  563. register struct bill_x *bp;
  564.     if(!inshop() || (u.ux == ESHK(shopkeeper)->shk.x && u.uy == ESHK(shopkeeper)->shk.y) ||
  565.         (u.ux == ESHK(shopkeeper)->shd.x && u.uy == ESHK(shopkeeper)->shd.y))
  566.         return;
  567.     if((bp = onbill(obj)) != 0){
  568.         obj->unpaid = 0;
  569.         if(bp->bquan > obj->quan){
  570.             otmp = newobj(0);
  571.             *otmp = *obj;
  572.             bp->bo_id = otmp->o_id = flags.ident++;
  573.             otmp->quan = (bp->bquan -= obj->quan);
  574.             otmp->owt = 0;    /* superfluous */
  575.             otmp->onamelth = 0;
  576.             bp->useup = 1;
  577.             otmp->nobj = billobjs;
  578.             billobjs = otmp;
  579.             return;
  580.         }
  581.         ESHK(shopkeeper)->billct--;
  582.         *bp = bill[ESHK(shopkeeper)->billct];
  583.         return;
  584.     }
  585.     if(obj->unpaid){
  586.         pline("%s didn't notice.", Monnam(shopkeeper));
  587.         obj->unpaid = 0;
  588.         return;        /* %% */
  589.     }
  590.     /* he dropped something of his own - probably wants to sell it */
  591.     if(shopkeeper->msleep || shopkeeper->mfroz ||
  592.         inroom(shopkeeper->mx,shopkeeper->my) != ESHK(shopkeeper)->shoproom)
  593.         return;
  594.     if(ESHK(shopkeeper)->billct == BILLSZ ||
  595.       ((tmp = shtypes[rooms[ESHK(shopkeeper)->shoproom].rtype-8]) && tmp != obj->olet)
  596.       || index("_0", obj->olet)) {
  597.         pline("%s seems not interested.", Monnam(shopkeeper));
  598.         return;
  599.     }
  600.     ltmp = getprice(obj) * obj->quan;
  601.     if(ANGRY(shopkeeper)) {
  602.         ltmp /= 3;
  603.         NOTANGRY(shopkeeper) = 1;
  604.     } else    ltmp /= 2;
  605.     if(ESHK(shopkeeper)->robbed){
  606.         if((ESHK(shopkeeper)->robbed -= ltmp) < 0)
  607.             ESHK(shopkeeper)->robbed = 0;
  608. pline("Thank you for your contribution to restock this recently plundered shop.");
  609.         return;
  610.     }
  611.     if(ltmp > shopkeeper->mgold)
  612.         ltmp = shopkeeper->mgold;
  613.     pay(-ltmp, shopkeeper);
  614.     if(!ltmp)
  615.     pline("%s gladly accepts %s but cannot pay you at present.",
  616.         Monnam(shopkeeper), doname(obj));
  617.     else
  618.     pline("You sold %s and got %ld gold piece%s.", doname(obj), ltmp,
  619.         plur(ltmp));
  620. }
  621.  
  622. doinvbill(mode)
  623. int mode;        /* 0: deliver count 1: paged */
  624. {
  625.     register struct bill_x *bp;
  626.     register struct obj *obj;
  627.     long totused, thisused;
  628.     char buf[BUFSZ];
  629.  
  630.     if(mode == 0) {
  631.         register int cnt = 0;
  632.  
  633.         if(shopkeeper)
  634.         for(bp = bill; bp - bill < ESHK(shopkeeper)->billct; bp++)
  635.             if(bp->useup ||
  636.               ((obj = bp_to_obj(bp)) && obj->quan < bp->bquan))
  637.             cnt++;
  638.         return(cnt);
  639.     }
  640.  
  641.     if(!shopkeeper) {
  642.         impossible("doinvbill: no shopkeeper?");
  643.         return(0);
  644.     }
  645.  
  646.     set_pager(0);
  647.     if(page_line("Unpaid articles already used up:") || page_line(""))
  648.         goto quit;
  649.  
  650.     totused = 0;
  651.     for(bp = bill; bp - bill < ESHK(shopkeeper)->billct; bp++) {
  652.         obj = bp_to_obj(bp);
  653.         if(!obj) {
  654.         impossible("Bad shopkeeper administration.");
  655.         goto quit;
  656.         }
  657.         if(bp->useup || bp->bquan > obj->quan) {
  658.         register int cnt, oquan, uquan;
  659.  
  660.         oquan = obj->quan;
  661.         uquan = (bp->useup ? bp->bquan : bp->bquan - oquan);
  662.         thisused = bp->price * uquan;
  663.         totused += thisused;
  664.         obj->quan = uquan;        /* cheat doname */
  665.         (void) sprintf(buf, "x -  %s", doname(obj));
  666.         obj->quan = oquan;        /* restore value */
  667.         for(cnt = 0; buf[cnt]; cnt++);
  668.         while(cnt < 50)
  669.             buf[cnt++] = ' ';
  670.         (void) sprintf(&buf[cnt], " %5ld zorkmids", thisused);
  671.         if(page_line(buf))
  672.             goto quit;
  673.         }
  674.     }
  675.     (void) sprintf(buf, "Total:%50ld zorkmids", totused);
  676.     if(page_line("") || page_line(buf))
  677.         goto quit;
  678.     set_pager(1);
  679.     return(0);
  680. quit:
  681.     set_pager(2);
  682.     return(0);
  683. }
  684.  
  685. static
  686. getprice(obj) register struct obj *obj; {
  687. register int tmp, ac;
  688.     switch(obj->olet){
  689.     case AMULET_SYM:
  690.         tmp = 10*rnd(500);
  691.         break;
  692.     case TOOL_SYM:
  693.         tmp = 10*rnd((obj->otyp == EXPENSIVE_CAMERA) ? 150 : 30);
  694.         break;
  695.     case RING_SYM:
  696.         tmp = 10*rnd(100);
  697.         break;
  698.     case WAND_SYM:
  699.         tmp = 10*rnd(100);
  700.         break;
  701.     case SCROLL_SYM:
  702.         tmp = 10*rnd(50);
  703. #ifdef MAIL
  704.         if(obj->otyp == SCR_MAIL)
  705.             tmp = rnd(5);
  706. #endif MAIL
  707.         break;
  708.     case POTION_SYM:
  709.         tmp = 10*rnd(50);
  710.         break;
  711.     case FOOD_SYM:
  712.         tmp = 10*rnd(5 + (2000/realhunger()));
  713.         break;
  714.     case GEM_SYM:
  715.         tmp = 10*rnd(20);
  716.         break;
  717.     case ARMOR_SYM:
  718.         ac = ARM_BONUS(obj);
  719.         if(ac <= -10)        /* probably impossible */
  720.             ac = -9;
  721.         tmp = 100 + ac*ac*rnd(10+ac);
  722.         break;
  723.     case WEAPON_SYM:
  724.         if(obj->otyp < BOOMERANG)
  725.             tmp = 5*rnd(10);
  726.         else if(obj->otyp == LONG_SWORD ||
  727.             obj->otyp == TWO_HANDED_SWORD)
  728.             tmp = 10*rnd(150);
  729.         else    tmp = 10*rnd(75);
  730.         break;
  731.     case CHAIN_SYM:
  732.         pline("Strange ..., carrying a chain?");
  733.     case BALL_SYM:
  734.         tmp = 10;
  735.         break;
  736.     default:
  737.         tmp = 10000;
  738.     }
  739.     return(tmp);
  740. }
  741.  
  742. static
  743. realhunger(){    /* not completely foolproof */
  744. register tmp = u.uhunger;
  745. register struct obj *otmp = invent;
  746.     while(otmp){
  747.         if(otmp->olet == FOOD_SYM && !otmp->unpaid)
  748.             tmp += objects[otmp->otyp].nutrition;
  749.         otmp = otmp->nobj;
  750.     }
  751.     return((tmp <= 0) ? 1 : tmp);
  752. }
  753.  
  754. shkcatch(obj)
  755. register struct obj *obj;
  756. {
  757.     register struct monst *shkp = shopkeeper;
  758.  
  759.     if(u.uinshop && shkp && !shkp->mfroz && !shkp->msleep &&
  760.         u.dx && u.dy &&
  761.         inroom(u.ux+u.dx, u.uy+u.dy) + 1 == u.uinshop &&
  762.         shkp->mx == ESHK(shkp)->shk.x && shkp->my == ESHK(shkp)->shk.y &&
  763.         u.ux == ESHK(shkp)->shd.x && u.uy == ESHK(shkp)->shd.y) {
  764.         pline("%s nimbly catches the %s.", Monnam(shkp), xname(obj));
  765.         obj->nobj = shkp->minvent;
  766.         shkp->minvent = obj;
  767.         return(1);
  768.     }
  769.     return(0);
  770. }
  771.  
  772. /*
  773.  * shk_move: return 1: he moved  0: he didnt  -1: let m_move do it
  774.  */
  775. shk_move(shkp)
  776. register struct monst *shkp;
  777. {
  778.     register struct monst *mtmp;
  779.     register struct permonst *mdat = shkp->data;
  780.     register xchar gx,gy,omx,omy,nx,ny,nix,niy;
  781.     register schar appr,i;
  782.     register int udist;
  783.     int z;
  784.     schar shkroom,chi,chcnt,cnt;
  785.     boolean uondoor, satdoor, avoid, badinv;
  786.     coord poss[9];
  787.     int info[9];
  788.     struct obj *ib = 0;
  789.  
  790.     omx = shkp->mx;
  791.     omy = shkp->my;
  792.  
  793.     if((udist = dist(omx,omy)) < 3) {
  794.         if(ANGRY(shkp)) {
  795.             (void) hitu(shkp, d(mdat->damn, mdat->damd)+1);
  796.             return(0);
  797.         }
  798.         if(ESHK(shkp)->following) {
  799.             if(strncmp(ESHK(shkp)->customer, plname, PL_NSIZ)){
  800.                 pline("Hello %s! I was looking for %s.",
  801.                     plname, ESHK(shkp)->customer);
  802.                 ESHK(shkp)->following = 0;
  803.                 return(0);
  804.             }
  805.             if(!ESHK(shkp)->robbed) {    /* impossible? */
  806.                 ESHK(shkp)->following = 0;
  807.                 return(0);
  808.             }
  809.             if(moves > followmsg+4) {
  810.                 pline("Hello %s! Didn't you forget to pay?",
  811.                     plname);
  812.                 followmsg = moves;
  813.             }
  814.             if(udist < 2)
  815.                 return(0);
  816.         }
  817.     }
  818.  
  819.     shkroom = inroom(omx,omy);
  820.     appr = 1;
  821.     gx = ESHK(shkp)->shk.x;
  822.     gy = ESHK(shkp)->shk.y;
  823.     satdoor = (gx == omx && gy == omy);
  824.     if(ESHK(shkp)->following || ((z = holetime()) >= 0 && z*z <= udist)){
  825.         gx = u.ux;
  826.         gy = u.uy;
  827.         if(shkroom < 0 || shkroom != inroom(u.ux,u.uy))
  828.             if(udist > 4)
  829.             return(-1);    /* leave it to m_move */
  830.     } else if(ANGRY(shkp)) {
  831.         long saveBlind = Blind;
  832.         Blind = 0;
  833.         if(shkp->mcansee && !Invis && cansee(omx,omy)) {
  834.             gx = u.ux;
  835.             gy = u.uy;
  836.         }
  837.         Blind = saveBlind;
  838.         avoid = FALSE;
  839.     } else {
  840. #define    GDIST(x,y)    ((x-gx)*(x-gx)+(y-gy)*(y-gy))
  841.         if(Invis)
  842.           avoid = FALSE;
  843.         else {
  844.           uondoor = (u.ux == ESHK(shkp)->shd.x &&
  845.                 u.uy == ESHK(shkp)->shd.y);
  846.           if(uondoor) {
  847.             if(ESHK(shkp)->billct)
  848.             pline("Hello %s! Will you please pay before leaving?",
  849.                 plname);
  850.             badinv = (carrying(PICK_AXE) || carrying(ICE_BOX));
  851.             if(satdoor && badinv)
  852.             return(0);
  853.             avoid = !badinv;
  854.           } else {
  855.             avoid = (u.uinshop && dist(gx,gy) > 8);
  856.             badinv = FALSE;
  857.           }
  858.  
  859.           if(((!ESHK(shkp)->robbed && !ESHK(shkp)->billct) || avoid)
  860.               && GDIST(omx,omy) < 3){
  861.               if(!badinv && !online(omx,omy))
  862.                 return(0);
  863.               if(satdoor)
  864.                   appr = gx = gy = 0;
  865.           }
  866.         }
  867.     }
  868.     if(omx == gx && omy == gy)
  869.         return(0);
  870.     if(shkp->mconf) {
  871.         avoid = FALSE;
  872.         appr = 0;
  873.     }
  874.     nix = omx;
  875.     niy = omy;
  876.     cnt = mfndpos(shkp,poss,info,ALLOW_SSM);
  877.     if(avoid && uondoor) {        /* perhaps we cannot avoid him */
  878.         for(i=0; i<cnt; i++)
  879.             if(!(info[i] & NOTONL)) goto notonl_ok;
  880.         avoid = FALSE;
  881.     notonl_ok:
  882.         ;
  883.     }
  884.     chi = -1;
  885.     chcnt = 0;
  886.     for(i=0; i<cnt; i++){
  887.         nx = poss[i].x;
  888.         ny = poss[i].y;
  889.            if(levl[nx][ny].typ == ROOM
  890.         || shkroom != ESHK(shkp)->shoproom
  891.         || ESHK(shkp)->following) {
  892. #ifdef STUPID
  893.             /* cater for stupid compilers */
  894.             register int zz;
  895. #endif STUPID
  896.             if(uondoor && (ib = sobj_at(ICE_BOX, nx, ny))) {
  897.             nix = nx; niy = ny; chi = i; break;
  898.             }
  899.             if(avoid && (info[i] & NOTONL))
  900.             continue;
  901.             if((!appr && !rn2(++chcnt)) ||
  902. #ifdef STUPID
  903.             (appr && (zz = GDIST(nix,niy)) && zz > GDIST(nx,ny))
  904. #else
  905.             (appr && GDIST(nx,ny) < GDIST(nix,niy))
  906. #endif STUPID
  907.             ) {
  908.                 nix = nx;
  909.                 niy = ny;
  910.                 chi = i;
  911.             }
  912.         }
  913.     }
  914.     if(nix != omx || niy != omy){
  915.         if(info[chi] & ALLOW_M){
  916.             mtmp = m_at(nix,niy);
  917.             if(hitmm(shkp,mtmp) == 1 && rn2(3) &&
  918.                hitmm(mtmp,shkp) == 2) return(2);
  919.             return(0);
  920.         } else if(info[chi] & ALLOW_U){
  921.             (void) hitu(shkp, d(mdat->damn, mdat->damd)+1);
  922.             return(0);
  923.         }
  924.         shkp->mx = nix;
  925.         shkp->my = niy;
  926.         pmon(shkp);
  927.         if(ib) {
  928.             freeobj(ib);
  929.             mpickobj(shkp, ib);
  930.         }
  931.         return(1);
  932.     }
  933.     return(0);
  934. }
  935. #endif QUEST
  936.  
  937. online(x,y) {
  938.     return(x==u.ux || y==u.uy ||
  939.         (x-u.ux)*(x-u.ux) == (y-u.uy)*(y-u.uy));
  940. }
  941.  
  942. /* Does this monster follow me downstairs? */
  943. follower(mtmp)
  944. register struct monst *mtmp;
  945. {
  946.     return( mtmp->mtame || index("1TVWZi&, ", mtmp->data->mlet) ||
  947.         (mtmp->isshk && ESHK(mtmp)->following) );
  948. }
  949.  
  950. /* He is digging in the shop. */
  951. shopdig(fall)
  952. register int fall;
  953. {
  954.     if(!fall) {
  955.     if(u.utraptype == TT_PIT)
  956.         pline("\"Be careful, sir, or you might fall through the floor.\"");
  957.     else
  958.         pline("\"Please, do not damage the floor here.\"");
  959.     } else if(dist(shopkeeper->mx, shopkeeper->my) < 3) {
  960.     register struct obj *obj, *obj2;
  961.  
  962.     pline("%s grabs your backpack!", shkname(shopkeeper));
  963.     for(obj = invent; obj; obj = obj2) {
  964.         obj2 = obj->nobj;
  965.         if(obj->owornmask) continue;
  966.         freeinv(obj);
  967.         obj->nobj = shopkeeper->minvent;
  968.         shopkeeper->minvent = obj;
  969.         if(obj->unpaid)
  970.             subfrombill(obj);
  971.     }
  972.     }
  973. }
  974.