xref: /netbsd-src/games/hack/hack.vault.c (revision 76dfffe33547c37f8bdd446e3e4ab0f3c16cea4b)
1 /*
2  * Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985.
3  */
4 
5 #ifndef lint
6 static char rcsid[] = "$NetBSD: hack.vault.c,v 1.3 1995/03/23 08:31:59 cgd Exp $";
7 #endif /* not lint */
8 
9 #include	"hack.h"
10 #ifdef QUEST
11 setgd(/* mtmp */) /* struct monst *mtmp; */ {}
12 gd_move() { return(2); }
13 gddead(mtmp) struct monst *mtmp; {}
14 replgd(mtmp,mtmp2) struct monst *mtmp, *mtmp2; {}
15 invault(){}
16 
17 #else
18 
19 
20 #include "def.mkroom.h"
21 extern struct monst *makemon();
22 #define	FCSIZ	(ROWNO+COLNO)
23 struct fakecorridor {
24 	xchar fx,fy,ftyp;
25 };
26 
27 struct egd {
28 	int fcbeg, fcend;	/* fcend: first unused pos */
29 	xchar gdx, gdy;		/* goal of guard's walk */
30 	unsigned gddone:1;
31 	struct fakecorridor fakecorr[FCSIZ];
32 };
33 
34 static struct permonst pm_guard =
35 	{ "guard", '@', 12, 12, -1, 4, 10, sizeof(struct egd) };
36 
37 static struct monst *guard;
38 static int gdlevel;
39 #define	EGD	((struct egd *)(&(guard->mextra[0])))
40 
41 static
42 restfakecorr()
43 {
44 	register fcx,fcy,fcbeg;
45 	register struct rm *crm;
46 
47 	while((fcbeg = EGD->fcbeg) < EGD->fcend) {
48 		fcx = EGD->fakecorr[fcbeg].fx;
49 		fcy = EGD->fakecorr[fcbeg].fy;
50 		if((u.ux == fcx && u.uy == fcy) || cansee(fcx,fcy) ||
51 		   m_at(fcx,fcy))
52 			return;
53 		crm = &levl[fcx][fcy];
54 		crm->typ = EGD->fakecorr[fcbeg].ftyp;
55 		if(!crm->typ) crm->seen = 0;
56 		newsym(fcx,fcy);
57 		EGD->fcbeg++;
58 	}
59 	/* it seems he left the corridor - let the guard disappear */
60 	mondead(guard);
61 	guard = 0;
62 }
63 
64 static
65 goldincorridor()
66 {
67 	register int fci;
68 
69 	for(fci = EGD->fcbeg; fci < EGD->fcend; fci++)
70 		if(g_at(EGD->fakecorr[fci].fx, EGD->fakecorr[fci].fy))
71 			return(1);
72 	return(0);
73 }
74 
75 setgd(){
76 register struct monst *mtmp;
77 	for(mtmp = fmon; mtmp; mtmp = mtmp->nmon) if(mtmp->isgd){
78 		guard = mtmp;
79 		gdlevel = dlevel;
80 		return;
81 	}
82 	guard = 0;
83 }
84 
85 invault(){
86 register tmp = inroom(u.ux, u.uy);
87     if(tmp < 0 || rooms[tmp].rtype != VAULT) {
88 	u.uinvault = 0;
89 	return;
90     }
91     if(++u.uinvault % 50 == 0 && (!guard || gdlevel != dlevel)) {
92 	char buf[BUFSZ];
93 	register x,y,dd,gx,gy;
94 
95 	/* first find the goal for the guard */
96 	for(dd = 1; (dd < ROWNO || dd < COLNO); dd++) {
97 	  for(y = u.uy-dd; y <= u.uy+dd; y++) {
98 	    if(y < 0 || y > ROWNO-1) continue;
99 	    for(x = u.ux-dd; x <= u.ux+dd; x++) {
100 	      if(y != u.uy-dd && y != u.uy+dd && x != u.ux-dd)
101 		x = u.ux+dd;
102 	      if(x < 0 || x > COLNO-1) continue;
103 	      if(levl[x][y].typ == CORR) goto fnd;
104 	    }
105 	  }
106 	}
107 	impossible("Not a single corridor on this level??");
108 	tele();
109 	return;
110 fnd:
111 	gx = x; gy = y;
112 
113 	/* next find a good place for a door in the wall */
114 	x = u.ux; y = u.uy;
115 	while(levl[x][y].typ == ROOM) {
116 		register int dx,dy;
117 
118 		dx = (gx > x) ? 1 : (gx < x) ? -1 : 0;
119 		dy = (gy > y) ? 1 : (gy < y) ? -1 : 0;
120 		if(abs(gx-x) >= abs(gy-y))
121 			x += dx;
122 		else
123 			y += dy;
124 	}
125 
126 	/* make something interesting happen */
127 	if(!(guard = makemon(&pm_guard,x,y))) return;
128 	guard->isgd = guard->mpeaceful = 1;
129 	EGD->gddone = 0;
130 	gdlevel = dlevel;
131 	if(!cansee(guard->mx, guard->my)) {
132 		mondead(guard);
133 		guard = 0;
134 		return;
135 	}
136 
137 	pline("Suddenly one of the Vault's guards enters!");
138 	pmon(guard);
139 	do {
140 		pline("\"Hello stranger, who are you?\" - ");
141 		getlin(buf);
142 	} while (!letter(buf[0]));
143 
144 	if(!strcmp(buf, "Croesus") || !strcmp(buf, "Kroisos")) {
145 		pline("\"Oh, yes - of course. Sorry to have disturbed you.\"");
146 		mondead(guard);
147 		guard = 0;
148 		return;
149 	}
150 	clrlin();
151 	pline("\"I don't know you.\"");
152 	if(!u.ugold)
153 	    pline("\"Please follow me.\"");
154 	else {
155 	    pline("\"Most likely all that gold was stolen from this vault.\"");
156 	    pline("\"Please drop your gold (say d$ ) and follow me.\"");
157 	}
158 	EGD->gdx = gx;
159 	EGD->gdy = gy;
160 	EGD->fcbeg = 0;
161 	EGD->fakecorr[0].fx = x;
162 	EGD->fakecorr[0].fy = y;
163 	EGD->fakecorr[0].ftyp = levl[x][y].typ;
164 	levl[x][y].typ = DOOR;
165 	EGD->fcend = 1;
166     }
167 }
168 
169 gd_move(){
170 register int x,y,dx,dy,gx,gy,nx,ny,typ;
171 register struct fakecorridor *fcp;
172 register struct rm *crm;
173 	if(!guard || gdlevel != dlevel){
174 		impossible("Where is the guard?");
175 		return(2);	/* died */
176 	}
177 	if(u.ugold || goldincorridor())
178 		return(0);	/* didnt move */
179 	if(dist(guard->mx,guard->my) > 1 || EGD->gddone) {
180 		restfakecorr();
181 		return(0);	/* didnt move */
182 	}
183 	x = guard->mx;
184 	y = guard->my;
185 	/* look around (hor & vert only) for accessible places */
186 	for(nx = x-1; nx <= x+1; nx++) for(ny = y-1; ny <= y+1; ny++) {
187 	    if(nx == x || ny == y) if(nx != x || ny != y)
188 	    if(isok(nx,ny))
189 	    if(!IS_WALL(typ = (crm = &levl[nx][ny])->typ) && typ != POOL) {
190 		register int i;
191 		for(i = EGD->fcbeg; i < EGD->fcend; i++)
192 			if(EGD->fakecorr[i].fx == nx &&
193 			   EGD->fakecorr[i].fy == ny)
194 				goto nextnxy;
195 		if((i = inroom(nx,ny)) >= 0 && rooms[i].rtype == VAULT)
196 			goto nextnxy;
197 		/* seems we found a good place to leave him alone */
198 		EGD->gddone = 1;
199 		if(ACCESSIBLE(typ)) goto newpos;
200 		crm->typ = (typ == SCORR) ? CORR : DOOR;
201 		goto proceed;
202 	    }
203     nextnxy:	;
204 	}
205 	nx = x;
206 	ny = y;
207 	gx = EGD->gdx;
208 	gy = EGD->gdy;
209 	dx = (gx > x) ? 1 : (gx < x) ? -1 : 0;
210 	dy = (gy > y) ? 1 : (gy < y) ? -1 : 0;
211 	if(abs(gx-x) >= abs(gy-y)) nx += dx; else ny += dy;
212 
213 	while((typ = (crm = &levl[nx][ny])->typ) != 0) {
214 	/* in view of the above we must have IS_WALL(typ) or typ == POOL */
215 	/* must be a wall here */
216 		if(isok(nx+nx-x,ny+ny-y) && typ != POOL &&
217 		    ZAP_POS(levl[nx+nx-x][ny+ny-y].typ)){
218 			crm->typ = DOOR;
219 			goto proceed;
220 		}
221 		if(dy && nx != x) {
222 			nx = x; ny = y+dy;
223 			continue;
224 		}
225 		if(dx && ny != y) {
226 			ny = y; nx = x+dx; dy = 0;
227 			continue;
228 		}
229 		/* I don't like this, but ... */
230 		crm->typ = DOOR;
231 		goto proceed;
232 	}
233 	crm->typ = CORR;
234 proceed:
235 	if(cansee(nx,ny)) {
236 		mnewsym(nx,ny);
237 		prl(nx,ny);
238 	}
239 	fcp = &(EGD->fakecorr[EGD->fcend]);
240 	if(EGD->fcend++ == FCSIZ) panic("fakecorr overflow");
241 	fcp->fx = nx;
242 	fcp->fy = ny;
243 	fcp->ftyp = typ;
244 newpos:
245 	if(EGD->gddone) nx = ny = 0;
246 	guard->mx = nx;
247 	guard->my = ny;
248 	pmon(guard);
249 	restfakecorr();
250 	return(1);
251 }
252 
253 gddead(){
254 	guard = 0;
255 }
256 
257 replgd(mtmp,mtmp2)
258 register struct monst *mtmp, *mtmp2;
259 {
260 	if(mtmp == guard)
261 		guard = mtmp2;
262 }
263 
264 #endif QUEST
265