SPACE 2/SPACE - Library 2 - Volume 1.iso/misc/39/makemon.c

C/C++ Source or Header | 1986-07-17 | 4.9 KB | 212 lines

/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* makemon.c - version 1.0.2 */

#include    "hack.h"
extern char fut_geno[];
extern char *index();
extern struct obj *mkobj_at();
struct monst zeromonst;
extern boolean in_mklev;

/*
 * called with [x,y] = coordinates;
 *    [0,0] means anyplace
 *    [u.ux,u.uy] means: call mnexto (if !in_mklev)
 *
 *    In case we make an Orc or killer bee, we make an entire horde (swarm);
 *    note that in this case we return only one of them (the one at [x,y]).
 */
struct monst *
makemon(ptr,x,y)
register struct permonst *ptr;
{
    register struct monst *mtmp;
    register tmp, ct;
    boolean anything = (!ptr);

    if(x != 0 || y != 0) if(m_at(x,y)) return((struct monst *) 0);
    if(ptr){
        if(index(fut_geno, ptr->mlet)) return((struct monst *) 0);
    } else {
        ct = CMNUM - strlen(fut_geno);
        if(index(fut_geno, 'm')) ct++;  /* make only 1 minotaur */
        if(index(fut_geno, '@')) ct++;
        if(ct <= 0) return(0);           /* no more monsters! */
        tmp = rn2(ct*dlevel/24 + 7);
        if(tmp < dlevel - 4) tmp = rn2(ct*dlevel/24 + 12);
        if(tmp >= ct) tmp = rn1(ct - (ct>>1), ct>>1);
        for(ct = 0; ct < CMNUM; ct++){
            ptr = &mons[ct];
            if(index(fut_geno, ptr->mlet))
                continue;
            if(!tmp--) goto gotmon;
        }
        panic("makemon?");
    }
gotmon:
    mtmp = newmonst(ptr->pxlth);
    *mtmp = zeromonst;    /* clear all entries in structure */
    for(ct = 0; ct < ptr->pxlth; ct++)
        ((char *) &(mtmp->mextra[0]))[ct] = 0;
    mtmp->nmon = fmon;
    fmon = mtmp;
    mtmp->m_id = flags.ident++;
    mtmp->data = ptr;
    mtmp->mxlth = ptr->pxlth;
    if(ptr->mlet == 'D') mtmp->mhpmax = mtmp->mhp = 80;
    else if(!ptr->mlevel) mtmp->mhpmax = mtmp->mhp = rnd(4);
    else mtmp->mhpmax = mtmp->mhp = d(ptr->mlevel, 8);
    mtmp->mx = x;
    mtmp->my = y;
    mtmp->mcansee = 1;
    if(ptr->mlet == 'M'){
        mtmp->mimic = 1;
        mtmp->mappearance = ']';
    }
    if(!in_mklev) {
        if(x == u.ux && y == u.uy && ptr->mlet != ' ')
            mnexto(mtmp);
        if(x == 0 && y == 0)
            rloc(mtmp);
    }
    if(ptr->mlet == 's' || ptr->mlet == 'S') {
        mtmp->mhide = mtmp->mundetected = 1;
        if(in_mklev)
        if(mtmp->mx && mtmp->my)
            (void) mkobj_at(0, mtmp->mx, mtmp->my);
    }
    if(ptr->mlet == ':') {
#ifdef DGK
        /* If you're protected with a ring, don't create
         * any shape-changing chameleons -dgk
         */
        if (Protection_from_shape_changers)
            mtmp->cham = 0;
        else {
            mtmp->cham = 1;
            (void) newcham(mtmp,
                &mons[dlevel+14+rn2(CMNUM-14-dlevel)]);
        }
#else
        mtmp->cham = 1;
        (void) newcham(mtmp, &mons[dlevel+14+rn2(CMNUM-14-dlevel)]);
#endif DGK
    }
    if(ptr->mlet == 'I' || ptr->mlet == ';')
        mtmp->minvis = 1;
    if(ptr->mlet == 'L' || ptr->mlet == 'N'
        || (in_mklev && index("&w;", ptr->mlet) && rn2(5))
    ) mtmp->msleep = 1;

#ifndef NOWORM
    if(ptr->mlet == 'w' && getwn(mtmp))
        initworm(mtmp);
#endif NOWORM

    if(anything) if(ptr->mlet == 'O' || ptr->mlet == 'k') {
        coord enexto();
        coord mm;
        register int cnt = rnd(10);
        mm.x = x;
        mm.y = y;
        while(cnt--) {
            mm = enexto(mm.x, mm.y);
            (void) makemon(ptr, mm.x, mm.y);
        }
    }

    return(mtmp);
}

coord
enexto(xx,yy)
register xchar xx,yy;
{
    register xchar x,y;
    coord foo[15], *tfoo;
    int range;

    tfoo = foo;
    range = 1;
    do {    /* full kludge action. */
        for(x = xx-range; x <= xx+range; x++)
            if(goodpos(x, yy-range)) {
                tfoo->x = x;
                tfoo++->y = yy-range;
                if(tfoo == &foo[15]) goto foofull;
            }
        for(x = xx-range; x <= xx+range; x++)
            if(goodpos(x,yy+range)) {
                tfoo->x = x;
                tfoo++->y = yy+range;
                if(tfoo == &foo[15]) goto foofull;
            }
        for(y = yy+1-range; y < yy+range; y++)
            if(goodpos(xx-range,y)) {
                tfoo->x = xx-range;
                tfoo++->y = y;
                if(tfoo == &foo[15]) goto foofull;
            }
        for(y = yy+1-range; y < yy+range; y++)
            if(goodpos(xx+range,y)) {
                tfoo->x = xx+range;
                tfoo++->y = y;
                if(tfoo == &foo[15]) goto foofull;
            }
        range++;
    } while(tfoo == foo);
foofull:
    return( foo[rn2(tfoo-foo)] );
}

goodpos(x,y)    /* used only in mnexto and rloc */
{
    return(
    ! (x < 1 || x > COLNO-2 || y < 1 || y > ROWNO-2 ||
       m_at(x,y) || !ACCESSIBLE(levl[x][y].typ)
       || (x == u.ux && y == u.uy)
       || sobj_at(ENORMOUS_ROCK, x, y)
    ));
}

rloc(mtmp)
struct monst *mtmp;
{
    register tx,ty;
    register char ch = mtmp->data->mlet;

#ifndef NOWORM
    if(ch == 'w' && mtmp->mx) return;    /* do not relocate worms */
#endif NOWORM
    do {
        tx = rn1(COLNO-3,2);
        ty = rn2(ROWNO);
    } while(!goodpos(tx,ty));
    mtmp->mx = tx;
    mtmp->my = ty;
    if(u.ustuck == mtmp){
        if(u.uswallow) {
            u.ux = tx;
            u.uy = ty;
            docrt();
        } else    u.ustuck = 0;
    }
    pmon(mtmp);
}

struct monst *
mkmon_at(let,x,y)
char let;
register int x,y;
{
    register int ct;
    register struct permonst *ptr;

    for(ct = 0; ct < CMNUM; ct++) {
        ptr = &mons[ct];
        if(ptr->mlet == let)
            return(makemon(ptr,x,y));
    }
    return(0);
}