xref: /original-bsd/games/hack/hack.mkmaze.c (revision e59fb703)
1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
2 /* hack.mkmaze.c - version 1.0.2 */
3 
4 #include "hack.h"
5 #include "def.mkroom.h"		/* not really used */
6 extern struct monst *makemon();
7 extern struct permonst pm_wizard;
8 extern struct obj *mkobj_at();
9 extern coord mazexy();
10 struct permonst hell_hound =
11 	{ "hell hound", 'd', 12, 14, 2, 3, 6, 0 };
12 
13 makemaz()
14 {
15 	int x,y;
16 	register zx,zy;
17 	coord mm;
18 	boolean al = (dlevel >= 30 && !flags.made_amulet);
19 
20 	for(x = 2; x < COLNO-1; x++)
21 		for(y = 2; y < ROWNO-1; y++)
22 			levl[x][y].typ = (x%2 && y%2) ? 0 : HWALL;
23 	if(al) {
24 	    register struct monst *mtmp;
25 
26 	    zx = 2*(COLNO/4) - 1;
27 	    zy = 2*(ROWNO/4) - 1;
28 	    for(x = zx-2; x < zx+4; x++) for(y = zy-2; y <= zy+2; y++) {
29 		levl[x][y].typ =
30 		    (y == zy-2 || y == zy+2 || x == zx-2 || x == zx+3) ? POOL :
31 		    (y == zy-1 || y == zy+1 || x == zx-1 || x == zx+2) ? HWALL:
32 		    ROOM;
33 	    }
34 	    (void) mkobj_at(AMULET_SYM, zx, zy);
35 	    flags.made_amulet = 1;
36 	    walkfrom(zx+4, zy);
37 	    if(mtmp = makemon(&hell_hound, zx, zy))
38 		mtmp->msleep = 1;
39 	    if(mtmp = makemon(PM_WIZARD, zx+1, zy)) {
40 		mtmp->msleep = 1;
41 		flags.no_of_wizards = 1;
42 	    }
43 	} else {
44 	    mm = mazexy();
45 	    zx = mm.x;
46 	    zy = mm.y;
47 	    walkfrom(zx,zy);
48 	    (void) mksobj_at(WAN_WISHING, zx, zy);
49 	    (void) mkobj_at(ROCK_SYM, zx, zy);	/* put a rock on top of it */
50 	}
51 
52 	for(x = 2; x < COLNO-1; x++)
53 		for(y = 2; y < ROWNO-1; y++) {
54 			switch(levl[x][y].typ) {
55 			case HWALL:
56 				levl[x][y].scrsym = '-';
57 				break;
58 			case ROOM:
59 				levl[x][y].scrsym = '.';
60 				break;
61 			}
62 		}
63 	for(x = rn1(8,11); x; x--) {
64 		mm = mazexy();
65 		(void) mkobj_at(rn2(2) ? GEM_SYM : 0, mm.x, mm.y);
66 	}
67 	for(x = rn1(10,2); x; x--) {
68 		mm = mazexy();
69 		(void) mkobj_at(ROCK_SYM, mm.x, mm.y);
70 	}
71 	mm = mazexy();
72 	(void) makemon(PM_MINOTAUR, mm.x, mm.y);
73 	for(x = rn1(5,7); x; x--) {
74 		mm = mazexy();
75 		(void) makemon((struct permonst *) 0, mm.x, mm.y);
76 	}
77 	for(x = rn1(6,7); x; x--) {
78 		mm = mazexy();
79 		mkgold(0L,mm.x,mm.y);
80 	}
81 	for(x = rn1(6,7); x; x--)
82 		mktrap(0,1,(struct mkroom *) 0);
83 	mm = mazexy();
84 	levl[(xupstair = mm.x)][(yupstair = mm.y)].scrsym = '<';
85 	levl[xupstair][yupstair].typ = STAIRS;
86 	xdnstair = ydnstair = 0;
87 }
88 
89 walkfrom(x,y) int x,y; {
90 register int q,a,dir;
91 int dirs[4];
92 	levl[x][y].typ = ROOM;
93 	while(1) {
94 		q = 0;
95 		for(a = 0; a < 4; a++)
96 			if(okay(x,y,a)) dirs[q++]= a;
97 		if(!q) return;
98 		dir = dirs[rn2(q)];
99 		move(&x,&y,dir);
100 		levl[x][y].typ = ROOM;
101 		move(&x,&y,dir);
102 		walkfrom(x,y);
103 	}
104 }
105 
106 move(x,y,dir)
107 register int *x, *y;
108 register int dir;
109 {
110 	switch(dir){
111 		case 0: --(*y); break;
112 		case 1: (*x)++; break;
113 		case 2: (*y)++; break;
114 		case 3: --(*x); break;
115 	}
116 }
117 
118 okay(x,y,dir)
119 int x,y;
120 register int dir;
121 {
122 	move(&x,&y,dir);
123 	move(&x,&y,dir);
124 	if(x<3 || y<3 || x>COLNO-3 || y>ROWNO-3 || levl[x][y].typ != 0)
125 		return(0);
126 	else
127 		return(1);
128 }
129 
130 coord
131 mazexy(){
132 	coord mm;
133 	mm.x = 3 + 2*rn2(COLNO/2 - 2);
134 	mm.y = 3 + 2*rn2(ROWNO/2 - 2);
135 	return mm;
136 }
137