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- /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
- /* mkmaze.c - version 1.0.2 */
-
- #include "hack.h"
- #include "mkroom.h" /* not really used */
- extern struct monst *makemon();
- extern struct obj *mkobj_at();
- extern coord mazexy();
- struct permonst hell_hound =
- { "hell hound", 'd', 12, 14, 2, 3, 6, 0 };
-
- makemaz()
- {
- int x,y;
- register zx,zy;
- coord mm;
- boolean al = (dlevel >= 30 && !flags.made_amulet);
-
- for(x = 2; x < COLNO-1; x++)
- for(y = 2; y < ROWNO-1; y++)
- levl[x][y].typ = (x%2 && y%2) ? 0 : HWALL;
- if(al) {
- register struct monst *mtmp;
-
- zx = 2*(COLNO>>2) - 1;
- zy = 2*(ROWNO>>2) - 1;
- for(x = zx-2; x < zx+4; x++) for(y = zy-2; y <= zy+2; y++) {
- levl[x][y].typ =
- (y == zy-2 || y == zy+2 || x == zx-2 || x == zx+3) ? POOL :
- (y == zy-1 || y == zy+1 || x == zx-1 || x == zx+2) ? HWALL:
- ROOM;
- }
- (void) mkobj_at(AMULET_SYM, zx, zy);
- flags.made_amulet = 1;
- walkfrom(zx+4, zy);
- if(mtmp = makemon(&hell_hound, zx, zy))
- mtmp->msleep = 1;
- if(mtmp = makemon(PM_WIZARD, zx+1, zy)) {
- mtmp->msleep = 1;
- flags.no_of_wizards = 1;
- }
- } else {
- mm = mazexy();
- zx = mm.x;
- zy = mm.y;
- walkfrom(zx,zy);
- (void) mksobj_at(WAN_WISHING, zx, zy);
- (void) mkobj_at(ROCK_SYM, zx, zy); /* put a rock on top of it */
- }
-
- for(x = 2; x < COLNO-1; x++)
- for(y = 2; y < ROWNO-1; y++) {
- switch(levl[x][y].typ) {
- #ifdef DGK
- case HWALL:
- levl[x][y].scrsym = symbol.hwall;
- break;
- case ROOM:
- levl[x][y].scrsym = symbol.room;
- break;
- #else
- case HWALL:
- levl[x][y].scrsym = '-';
- break;
- case ROOM:
- levl[x][y].scrsym = '.';
- break;
- #endif DGK
- }
- }
- for(x = rn1(8,11); x; x--) {
- mm = mazexy();
- (void) mkobj_at(rn2(2) ? GEM_SYM : 0, mm.x, mm.y);
- }
- for(x = rn1(10,2); x; x--) {
- mm = mazexy();
- (void) mkobj_at(ROCK_SYM, mm.x, mm.y);
- }
- mm = mazexy();
- (void) makemon(PM_MINOTAUR, mm.x, mm.y);
- for(x = rn1(5,7); x; x--) {
- mm = mazexy();
- (void) makemon((struct permonst *) 0, mm.x, mm.y);
- }
- for(x = rn1(6,7); x; x--) {
- mm = mazexy();
- mkgold(0L,mm.x,mm.y);
- }
- for(x = rn1(6,7); x; x--)
- mktrap(0,1,(struct mkroom *) 0);
- mm = mazexy();
- levl[(xupstair = mm.x)][(yupstair = mm.y)].scrsym = '<';
- levl[xupstair][yupstair].typ = STAIRS;
- xdnstair = ydnstair = 0;
- }
-
- #ifdef DGK
- /* Make the mazewalk iterative by faking a stack. This is needed to
- * ensure the mazewalk is successful in the limited stack space of
- * the program. This iterative version uses the mimumum amount of stack
- * that is totally safe.
- */
- walkfrom(x,y)
- int x,y;
- {
- #define CELLS (ROWNO * COLNO) / 4 /* a maze cell is 4 squares */
- char mazex[CELLS + 1], mazey[CELLS + 1]; /* char's are OK */
- int q, a, dir, pos;
- int dirs[4];
-
- pos = 1;
- mazex[pos] = (char) x;
- mazey[pos] = (char) y;
- while (pos) {
- x = (int) mazex[pos];
- y = (int) mazey[pos];
- levl[x][y].typ = ROOM;
- q = 0;
- for (a = 0; a < 4; a++)
- if(okay(x, y, a)) dirs[q++]= a;
- if (!q)
- pos--;
- else {
- dir = dirs[rn2(q)];
- move(&x, &y, dir);
- levl[x][y].typ = ROOM;
- move(&x, &y, dir);
- pos++;
- if (pos > CELLS)
- panic("Overflow in walkfrom");
- mazex[pos] = (char) x;
- mazey[pos] = (char) y;
- }
- }
- }
- #else DGK
-
- walkfrom(x,y) int x,y; {
- register int q,a,dir;
- int dirs[4];
- levl[x][y].typ = ROOM;
- while(1) {
- q = 0;
- for(a = 0; a < 4; a++)
- if(okay(x,y,a)) dirs[q++]= a;
- if(!q) return;
- dir = dirs[rn2(q)];
- move(&x,&y,dir);
- levl[x][y].typ = ROOM;
- move(&x,&y,dir);
- walkfrom(x,y);
- }
- }
- #endif DGK
-
- move(x,y,dir)
- register int *x, *y;
- register int dir;
- {
- switch(dir){
- case 0: --(*y); break;
- case 1: (*x)++; break;
- case 2: (*y)++; break;
- case 3: --(*x); break;
- }
- }
-
- okay(x,y,dir)
- int x,y;
- register int dir;
- {
- move(&x,&y,dir);
- move(&x,&y,dir);
- if(x<3 || y<3 || x>COLNO-3 || y>ROWNO-3 || levl[x][y].typ != 0)
- return(0);
- else
- return(1);
- }
-
- coord
- mazexy(){
- coord mm;
- mm.x = 3 + 2*rn2((COLNO>>1) - 2);
- mm.y = 3 + 2*rn2((ROWNO>>1) - 2);
- return mm;
- }
-