pc-hack

vault.c (5659B)

---

 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /* vault.c - version 1.0.2 */
 
 #include	"hack.h"
 #include "mkroom.h"
 
 extern struct monst *makemon();
 #define	FCSIZ	(ROWNO+COLNO)
 struct fakecorridor {
 	xchar fx,fy,ftyp;
 };
 
 struct egd {
 	int fcbeg, fcend;	/* fcend: first unused pos */
 	xchar gdx, gdy;		/* goal of guard's walk */
 	unsigned gddone:1;
 	struct fakecorridor fakecorr[FCSIZ];
 };
 
 struct permonst pm_guard =
 	{ "guard", '@', 12, 12, -1, 4, 10, sizeof(struct egd) };
 
 static struct monst *guard;
 static int gdlevel;
 #define	EGD	((struct egd *)(&(guard->mextra[0])))
 
 static
 restfakecorr()
 {
 	register fcx,fcy,fcbeg;
 	register struct rm *crm;
 
 	while((fcbeg = EGD->fcbeg) < EGD->fcend) {
 		fcx = EGD->fakecorr[fcbeg].fx;
 		fcy = EGD->fakecorr[fcbeg].fy;
 		if((u.ux == fcx && u.uy == fcy) || cansee(fcx,fcy) ||
 		   m_at(fcx,fcy))
 			return;
 		crm = &levl[fcx][fcy];
 		crm->typ = EGD->fakecorr[fcbeg].ftyp;
 		if(!crm->typ) crm->seen = 0;
 		newsym(fcx,fcy);
 		EGD->fcbeg++;
 	}
 	/* it seems he left the corridor - let the guard disappear */
 	mondead(guard);
 	guard = 0;
 }
 
 static
 goldincorridor()
 {
 	register int fci;
 
 	for(fci = EGD->fcbeg; fci < EGD->fcend; fci++)
 		if(g_at(EGD->fakecorr[fci].fx, EGD->fakecorr[fci].fy))
 			return(1);
 	return(0);
 }
 
 setgd(){
 register struct monst *mtmp;
 	for(mtmp = fmon; mtmp; mtmp = mtmp->nmon) if(mtmp->isgd){
 		guard = mtmp;
 		gdlevel = dlevel;
 		return;
 	}
 	guard = 0;
 }
 
 invault(){
 register tmp = inroom(u.ux, u.uy);
     if(tmp < 0 || rooms[tmp].rtype != VAULT) {
 	u.uinvault = 0;
 	return;
     }
     if(++u.uinvault % 50 == 0 && (!guard || gdlevel != dlevel)) {
 	char buf[BUFSZ];
 	register x,y,dd,gx,gy;
 
 	/* first find the goal for the guard */
 	for(dd = 1; (dd < ROWNO || dd < COLNO); dd++) {
 	  for(y = u.uy-dd; y <= u.uy+dd; y++) {
 	    if(y < 0 || y > ROWNO-1) continue;
 	    for(x = u.ux-dd; x <= u.ux+dd; x++) {
 	      if(y != u.uy-dd && y != u.uy+dd && x != u.ux-dd)
 		x = u.ux+dd;
 	      if(x < 0 || x > COLNO-1) continue;
 	      if(levl[x][y].typ == CORR) goto fnd;
 	    }
 	  }
 	}
 	impossible("Not a single corridor on this level??");
 	tele();
 	return;
 fnd:
 	gx = x; gy = y;
 
 	/* next find a good place for a door in the wall */
 	x = u.ux; y = u.uy;
 	while(levl[x][y].typ == ROOM) {
 		register int dx,dy;
 
 		dx = (gx > x) ? 1 : (gx < x) ? -1 : 0;
 		dy = (gy > y) ? 1 : (gy < y) ? -1 : 0;
 		if(abs(gx-x) >= abs(gy-y))
 			x += dx;
 		else
 			y += dy;
 	}
 
 	/* make something interesting happen */
 	if(!(guard = makemon(&pm_guard,x,y))) return;
 	guard->isgd = guard->mpeaceful = 1;
 	EGD->gddone = 0;
 	gdlevel = dlevel;
 	if(!cansee(guard->mx, guard->my)) {
 		mondead(guard);
 		guard = 0;
 		return;
 	}
 
 	pline("Suddenly one of the Vault's guards enters!");
 	pmon(guard);
 	do {
 		pline("\"Hello stranger, who are you?\" - ");
 		getlin(buf);
 	} while (!letter(buf[0]));
 
 	if(!strcmp(buf, "Croesus") || !strcmp(buf, "Kroisos")) {
 		pline("\"Oh, yes - of course. Sorry to have disturbed you.\"");
 		mondead(guard);
 		guard = 0;
 		return;
 	}
 	clrlin();
 	pline("\"I don't know you.\"");
 	if(!u.ugold)
 	    pline("\"Please follow me.\"");
 	else {
 	    pline("\"Most likely all that gold was stolen from this vault.\"");
 	    pline("\"Please drop your gold (say d$ ) and follow me.\"");
 	}
 	EGD->gdx = gx;
 	EGD->gdy = gy;
 	EGD->fcbeg = 0;
 	EGD->fakecorr[0].fx = x;
 	EGD->fakecorr[0].fy = y;
 	EGD->fakecorr[0].ftyp = levl[x][y].typ;
 	levl[x][y].typ = DOOR;
 	EGD->fcend = 1;
     }
 }
 
 gd_move(){
 register int x,y,dx,dy,gx,gy,nx,ny,typ;
 register struct fakecorridor *fcp;
 register struct rm *crm;
 	if(!guard || gdlevel != dlevel){
 		impossible("Where is the guard?");
 		return(2);	/* died */
 	}
 	if(u.ugold || goldincorridor())
 		return(0);	/* didnt move */
 	if(dist(guard->mx,guard->my) > 1 || EGD->gddone) {
 		restfakecorr();
 		return(0);	/* didnt move */
 	}
 	x = guard->mx;
 	y = guard->my;
 	/* look around (hor & vert only) for accessible places */
 	for(nx = x-1; nx <= x+1; nx++) for(ny = y-1; ny <= y+1; ny++) {
 	    if(nx == x || ny == y) if(nx != x || ny != y)
 	    if(isok(nx,ny))
 	    if(!IS_WALL(typ = (crm = &levl[nx][ny])->typ) && typ != POOL) {
 		register int i;
 		for(i = EGD->fcbeg; i < EGD->fcend; i++)
 			if(EGD->fakecorr[i].fx == nx &&
 			   EGD->fakecorr[i].fy == ny)
 				goto nextnxy;
 		if((i = inroom(nx,ny)) >= 0 && rooms[i].rtype == VAULT)
 			goto nextnxy;
 		/* seems we found a good place to leave him alone */
 		EGD->gddone = 1;
 		if(ACCESSIBLE(typ)) goto newpos;
 		crm->typ = (typ == SCORR) ? CORR : DOOR;
 		goto proceed;
 	    }
     nextnxy:	;
 	}
 	nx = x;
 	ny = y;
 	gx = EGD->gdx;
 	gy = EGD->gdy;
 	dx = (gx > x) ? 1 : (gx < x) ? -1 : 0;
 	dy = (gy > y) ? 1 : (gy < y) ? -1 : 0;
 	if(abs(gx-x) >= abs(gy-y)) nx += dx; else ny += dy;
 
 	while((typ = (crm = &levl[nx][ny])->typ) != 0) {
 	/* in view of the above we must have IS_WALL(typ) or typ == POOL */
 	/* must be a wall here */
 		if(isok(nx+nx-x,ny+ny-y) && typ != POOL &&
 		    ZAP_POS(levl[nx+nx-x][ny+ny-y].typ)){
 			crm->typ = DOOR;
 			goto proceed;
 		}
 		if(dy && nx != x) {
 			nx = x; ny = y+dy;
 			continue;
 		}
 		if(dx && ny != y) {
 			ny = y; nx = x+dx; dy = 0;
 			continue;
 		}
 		/* I don't like this, but ... */
 		crm->typ = DOOR;
 		goto proceed;
 	}
 	crm->typ = CORR;
 proceed:
 	if(cansee(nx,ny)) {
 		mnewsym(nx,ny);
 		prl(nx,ny);
 	}
 	fcp = &(EGD->fakecorr[EGD->fcend]);
 	if(EGD->fcend++ == FCSIZ) panic("fakecorr overflow");
 	fcp->fx = nx;
 	fcp->fy = ny;
 	fcp->ftyp = typ;
 newpos:
 	if(EGD->gddone) nx = ny = 0;
 	guard->mx = nx;
 	guard->my = ny;
 	pmon(guard);
 	restfakecorr();
 	return(1);
 }
 
 gddead(){
 	guard = 0;
 }
 
 replgd(mtmp,mtmp2)
 register struct monst *mtmp, *mtmp2;
 {
 	if(mtmp == guard)
 		guard = mtmp2;
 }