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spells.c
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spells.c
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/*
cast() Subroutine called by parse to cast a spell for the user
speldamage(x) Function to perform spell functions cast by the player
loseint() Routine to decrement your int (intelligence) if > 3
isconfuse() Routine to check to see if player is confused
nospell(x,monst) Routine to return 1 if a spell doesn't affect a monster
fullhit(xx) Function to return full damage against a monst (aka web)
direct(spnum,dam,str,arg) Routine to direct spell damage 1 square in 1 dir
godirect(spnum,dam,str,delay,cshow) Function to perform missile attacks
ifblind(x,y) Routine to put "monster" or the monster name into lastmosnt
tdirect(spnum) Routine to teleport away a monster
omnidirect(sp,dam,str) Routine to damage all monsters 1 square from player
dirsub(x,y) Routine to ask for direction, then modify x,y for it
dirpoly(spnum) Routine to ask for a direction and polymorph a monst
annihilate() Routine to annihilate monsters around player, playerx,playery
genmonst() Function to ask for monster and genocide from game
*/
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include "larncons.h"
#include "larndata.h"
#include "larnfunc.h"
/* used for altar reality */
struct isave
{
char type; /* 0=item, 1=monster */
char id; /* item number or monster number */
short arg; /* the type of item or hitpoints of monster */
};
static void speldamage(int);
static void create_guardian(int, int, int);
static void loseint(void);
static int isconfuse(void);
static int nospell(int, int);
static void direct(int, int, char *, int);
static void tdirect(int);
static void omnidirect(int, int, char *);
static void dirpoly(int);
static void genmonst(void);
/*
* cast() Subroutine called by parse to cast a spell for the user
*
* No arguments and no return value.
*/
static char eys[] = "\nEnter your spell: ";
void cast(void)
{
int i, j, a, b, d;
cursors();
if (c[SPELLS] <= 0) {
lprcat("\nYou don't have any spells!");
return;
}
lprcat(eys);
--c[SPELLS];
while ((a = ttgetch()) == 'I') {
seemagic(-1);
cursors();
lprcat(eys);
}
if (a=='\33')
goto over; /* to escape casting a spell */
if ((b=ttgetch())=='\33')
goto over; /* to escape casting a spell */
if ((d=ttgetch())=='\33')
{
over:
lprcat(aborted);
c[SPELLS]++;
return;
} /* to escape casting a spell */
#ifdef EXTRA
c[SPELLSCAST]++;
#endif
for (lprc('\n'),j= -1,i=0; i<SPNUM; i++) /*seq search for his spell, hash?*/
if ((spelcode[i][0]==a) && (spelcode[i][1]==b) && (spelcode[i][2]==d))
if (spelknow[i])
{ speldamage(i); j = 1; i=SPNUM; }
if (j == -1) lprcat(" Nothing Happened ");
bottomline();
}
/*
* speldamage(x) Function to perform spell functions cast by the player
* int x;
*
* Enter with the spell number, returns no value.
* Please insure that there are 2 spaces before all messages here
*/
static void speldamage(int x)
{
int i, j, clev;
int xl, xh, yl, yh;
signed char *kn, *pm, *p;
char *msg;
if (x>=SPNUM) return; /* no such spell */
if (c[TIMESTOP]) { lprcat(" It didn't seem to work"); return; } /* not if time stopped */
clev = c[LEVEL];
if ((rnd(23)==7) || (rnd(18) > c[INTELLIGENCE]))
{ lprcat(" It didn't work!"); return; }
if (clev*3+2 < x)
{
lprcat(" Nothing happens. You seem inexperienced at this");
return;
}
switch(x)
{
/* ----- LEVEL 1 SPELLS ----- */
case 0: if (c[PROTECTIONTIME]==0) c[MOREDEFENSES]+=2; /* protection field +2 */
c[PROTECTIONTIME] += 250; return;
case 1: i = rnd(((clev+1)<<1)) + clev + 3;
godirect(x,i,(clev>=2)?" Your missiles hit the %s":" Your missile hit the %s",100,'+'); /* magic missile */
return;
case 2: if (c[DEXCOUNT]==0) c[DEXTERITY]+=3; /* dexterity */
c[DEXCOUNT] += 400; return;
case 3:
i=rnd(3)+1;
msg=" While the %s slept, you smashed it %d times";
ws:
direct(x,fullhit(i),msg,i); /* sleep */
return;
case 4: /* charm monster */ c[CHARMCOUNT] += c[CHARISMA]<<1; return;
case 5: godirect(x,rnd(10)+15+clev," The sound damages the %s",70,'@'); /* sonic spear */
return;
/* ----- LEVEL 2 SPELLS ----- */
case 6: i=rnd(3)+2; msg=" While the %s is entangled, you hit %d times";
goto ws; /* web */
case 7: if (c[STRCOUNT]==0) c[STREXTRA]+=3; /* strength */
c[STRCOUNT] += 150+rnd(100); return;
case 8: yl = playery-5; /* enlightenment */
yh = playery+6; xl = playerx-15; xh = playerx+16;
vxy(&xl,&yl); vxy(&xh,&yh); /* check bounds */
for (i=yl; i<=yh; i++) /* enlightenment */
for (j=xl; j<=xh; j++)
know[j][i]=KNOWALL;
draws(xl,xh+1,yl,yh+1); return;
case 9: raisehp(20+(clev<<1)); return; /* healing */
case 10: c[BLINDCOUNT]=0; return; /* cure blindness */
case 11: createmonster(makemonst(level+1)+8); return;
case 12: if (rnd(11)+7 <= c[WISDOM]) direct(x,rnd(20)+20+clev," The %s believed!",0);
else lprcat(" It didn't believe the illusions!");
return;
case 13: /* if he has the amulet of invisibility then add more time */
for (j=i=0; i<26; i++)
if (iven[i]==OAMULET) j+= 1+ivenarg[i];
c[INVISIBILITY] += (j<<7)+12; return;
/* ----- LEVEL 3 SPELLS ----- */
case 14: godirect(x,rnd(25+clev)+25+clev," The fireball hits the %s",40,'*'); return; /* fireball */
case 15: godirect(x,rnd(25)+20+clev," Your cone of cold strikes the %s",60,'O'); /* cold */
return;
case 16: dirpoly(x); return; /* polymorph */
case 17: c[CANCELLATION]+= 5+clev; return; /* cancellation */
case 18: c[HASTESELF]+= 7+clev; return; /* haste self */
case 19: omnidirect(x,30+rnd(10)," The %s gasps for air"); /* cloud kill */
return;
case 20: xh = min(playerx+1,MAXX-2); yh = min(playery+1,MAXY-2);
for (i=max(playerx-1,1); i<=xh; i++) /* vaporize rock */
for (j=max(playery-1,1); j<=yh; j++)
{
kn = &know[i][j];
pm = &mitem[i][j];
switch(*(p= &item[i][j]))
{
case OWALL: if (level < MAXLEVEL+MAXVLEVEL-1)
*p = *kn = 0;
break;
case OSTATUE: if (c[HARDGAME]<3)
{
*p=OBOOK; iarg[i][j]=level; *kn=0;
}
break;
case OTHRONE:
*p= OTHRONE2;
create_guardian( GNOMEKING, i, j );
break;
case OALTAR:
create_guardian( DEMONPRINCE, i, j );
break;
case OFOUNTAIN:
create_guardian( WATERLORD, i, j );
break;
};
switch(*pm)
{
case XORN: ifblind(i,j); hitm(i,j,200); break; /* Xorn takes damage from vpr */
}
}
return;
/* ----- LEVEL 4 SPELLS ----- */
case 21: direct(x,100+clev," The %s shrivels up",0); /* dehydration */
return;
case 22: godirect(x,rnd(25)+20+(clev<<1)," A lightning bolt hits the %s",1,'~'); /* lightning */
return;
case 23: i=min(c[HP]-1,c[HPMAX]/2); /* drain life */
direct(x,i+i,"",0); c[HP] -= i; return;
case 24: if (c[GLOBE]==0) c[MOREDEFENSES] += 10;
c[GLOBE] += 200; loseint(); /* globe of invulnerability */
return;
case 25: omnidirect(x,32+clev," The %s struggles for air in your flood!"); /* flood */
return;
case 26: if (rnd(151)==63) { lprcat("\nYour heart stopped!\n"); nap(4000); died(270); return; }
if (c[WISDOM]>rnd(10)+10) direct(x,2000," The %s's heart stopped",0); /* finger of death */
else lprcat(" It didn't work"); return;
/* ----- LEVEL 5 SPELLS ----- */
case 27: c[SCAREMONST] += rnd(10)+clev; return; /* scare monster */
case 28: c[HOLDMONST] += rnd(10)+clev; return; /* hold monster */
case 29: c[TIMESTOP] += rnd(20)+(clev<<1); return; /* time stop */
case 30: tdirect(x); return; /* teleport away */
case 31: omnidirect(x,35+rnd(10)+clev," The %s cringes from the flame"); /* magic fire */
return;
/* ----- LEVEL 6 SPELLS ----- */
case 32: if ((rnd(23)==5) && (wizard==0)) /* sphere of annihilation */
{
lprcat("\nYou have been enveloped by the zone of nothingness!\n");
nap(4000); died(258); return;
}
xl=playerx; yl=playery;
loseint();
i = dirsub(&xl,&yl); /* get direction of sphere */
newsphere(xl,yl,i,rnd(20)+11); /* make a sphere */
return;
case 33: genmonst(); spelknow[33]=0; /* genocide */
loseint();
return;
case 34: /* summon demon */
if (rnd(100) > 30) { direct(x,150," The demon strikes at the %s",0); return; }
if (rnd(100) > 15) { lprcat(" Nothing seems to have happened"); return; }
lprcat(" The demon turned on you and vanished!");
i=rnd(40)+30; lastnum=277;
losehp(i); /* must say killed by a demon */ return;
case 35: /* walk through walls */
c[WTW] += rnd(10)+5; return;
case 36: /* alter reality */
{
struct isave *save; /* pointer to item save structure */
int sc; sc=0; /* # items saved */
save = (struct isave *)malloc(sizeof(struct isave)*MAXX*MAXY*2);
if (save == NULL)
{
lprcat("\nPolinneaus won't let you mess with his dungeon!");
return;
}
for (j=0; j<MAXY; j++)
for (i=0; i<MAXX; i++) /* save all items and monsters */
{
xl = item[i][j];
if (xl && xl!=OWALL && xl!=OANNIHILATION)
{
save[sc].type=0; save[sc].id=item[i][j];
save[sc++].arg=iarg[i][j];
}
if (mitem[i][j])
{
save[sc].type=1; save[sc].id=mitem[i][j];
save[sc++].arg=hitp[i][j];
}
item[i][j]=OWALL; mitem[i][j]=0;
if (wizard)
know[i][j]=KNOWALL;
else
know[i][j]=0;
}
eat(1,1); if (level==1) item[33][MAXY-1]=OENTRANCE;
for (j=rnd(MAXY-2), i=1; i<MAXX-1; i++) item[i][j]=0;
while (sc>0) /* put objects back in level */
{
--sc;
if (save[sc].type == 0)
{
int trys;
for (trys=100, i=j=1; --trys>0 && item[i][j]; i=rnd(MAXX-1), j=rnd(MAXY-1));
if (trys) { item[i][j]=save[sc].id; iarg[i][j]=save[sc].arg; }
}
else
{ /* put monsters back in */
int trys;
for (trys=100, i=j=1; --trys>0 && (item[i][j]==OWALL || mitem[i][j]); i=rnd(MAXX-1), j=rnd(MAXY-1));
if (trys) { mitem[i][j]=save[sc].id; hitp[i][j]=save[sc].arg; }
}
}
loseint();
draws(0,MAXX,0,MAXY); if (wizard==0) spelknow[36]=0;
free((char*)save); positionplayer(); return;
}
case 37: /* permanence */ adjtime(-99999L); spelknow[37]=0; /* forget */
loseint();
return;
default: lprintf(" spell %d not available!",(long)x); return;
};
}
/*
* Create a guardian for a throne/altar/fountain, as a result of the player
* using a VPR spell or pulverization scroll on it.
*
* monst = monster code for guardian
* x, y = coords of the object being guarded
*
*/
static void create_guardian(int monst, int x, int y)
{
int k ;
/* prevent the guardian from being created on top of the player */
if (x == playerx && y == playery) {
k = rnd(8);
x += diroffx[k];
y += diroffy[k];
}
know[x][y] = 0;
mitem[x][y] = monst ;
hitp[x][y] = monster[monst].hitpoints;
}
/*
* loseint() Routine to subtract 1 from your int (intelligence) if > 3
*
* No arguments and no return value
*/
static void loseint(void)
{
if (--c[INTELLIGENCE] < 3) {
c[INTELLIGENCE] = 3;
}
}
/*
* isconfuse() Routine to check to see if player is confused
*
* This routine prints out a message saying "You can't aim your magic!"
* returns 0 if not confused, non-zero (time remaining confused) if confused
*/
static int isconfuse(void)
{
if (c[CONFUSE]) { lprcat(" You can't aim your magic!"); }
return(c[CONFUSE]);
}
/*
* nospell(x,monst) Routine to return 1 if a spell doesn't affect a monster
* int x,monst;
*
* Subroutine to return 1 if the spell can't affect the monster
* otherwise returns 0
* Enter with the spell number in x, and the monster number in monst.
*/
static int nospell(int x, int monst)
{
int tmp;
if (x>=SPNUM || monst>=MAXMONST+8 || monst<0 || x<0) return(0); /* bad spell or monst */
if ((tmp=spelweird[monst-1][x])==0) return(0);
cursors(); lprc('\n'); lprintf(spelmes[tmp],monster[monst].name); return(1);
}
/*
* fullhit(xx) Function to return full damage against a monster (aka web)
* int xx;
*
* Function to return hp damage to monster due to a number of full hits
* Enter with the number of full hits being done
*/
int fullhit(int xx)
{
int i;
if (xx<0 || xx>20) return(0); /* fullhits are out of range */
if (c[LANCEDEATH]) return(10000); /* lance of death */
i = xx * ((c[WCLASS]>>1)+c[STRENGTH]+c[STREXTRA]-c[HARDGAME]-12+c[MOREDAM]);
return( (i>=1) ? i : xx );
}
/*
* direct(spnum,dam,str,arg) Routine to direct spell damage 1 square in 1 dir
* int spnum,dam,arg;
* char *str;
*
* Routine to ask for a direction to a spell and then hit the monster
* Enter with the spell number in spnum, the damage to be done in dam,
* lprintf format string in str, and lprintf's argument in arg.
* Returns no value.
*/
static void direct(int spnum, int dam, char *str, int arg)
{
int x,y;
int m;
/* bad arguments */
if (spnum < 0 || spnum >= SPNUM || str == NULL) {
return;
}
if (isconfuse()) {
return;
}
dirsub(&x,&y);
m = mitem[x][y];
if (item[x][y]==OMIRROR)
{
if (spnum==3) /* sleep */
{
lprcat("You fall asleep! ");
fool:
arg += 2;
while (arg-- > 0) { parse2(); nap(1000); }
return;
}
else if (spnum==6) /* web */
{
lprcat("You get stuck in your own web! ");
goto fool;
}
else
{
lastnum=278;
lprintf(str,"spell caster (thats you)",(long)arg);
losehp(dam); return;
}
}
if (m==0)
{ lprcat(" There wasn't anything there!"); return; }
ifblind(x,y);
if (nospell(spnum,m)) { lasthx=x; lasthy=y; return; }
lprintf(str,lastmonst,(long)arg); hitm(x,y,dam);
}
/*
* godirect(spnum,dam,str,delay,cshow) Function to perform missile attacks
* int spnum,dam,delay;
* char *str,cshow;
*
* Function to hit in a direction from a missile weapon and have it keep
* on going in that direction until its power is exhausted
* Enter with the spell number in spnum, the power of the weapon in hp,
* lprintf format string in str, the # of milliseconds to delay between
* locations in delay, and the character to represent the weapon in cshow.
* Returns no value.
*/
void godirect(int spnum, int dam, char *str, int delay, char cshow)
{
signed char *p;
int x, y, m;
int dx, dy;
/* bad args */
if (spnum < 0 || spnum >= SPNUM || str == 0 || delay < 0) {
return;
}
if (isconfuse()) {
return;
}
dirsub(&dx,&dy);
x = dx;
y = dy;
dx = x - playerx;
dy = y - playery;
x = playerx;
y = playery;
while (dam > 0)
{
x += dx;
y += dy;
if ((x > MAXX-1) || (y > MAXY-1) ||
(x < 0) || (y < 0)) {
dam = 0;
/* out of bounds */
break;
}
/* if energy hits player */
if ((x == playerx) && (y == playery)) {
cursors();
lprcat("\nYou are hit my your own magic!");
lastnum = 278;
losehp(dam);
return;
}
/* if not blind show effect */
if (c[BLINDCOUNT] == 0) {
cursor(x + 1,y + 1);
lprc(cshow);
nap(delay);
show1cell(x, y);
}
m = mitem[x][y];
/* is there a monster there? */
if (m != 0) {
ifblind(x, y);
if (nospell(spnum, m)) {
lasthx = x;
lasthy = y;
return;
}
cursors();
lprc('\n');
lprintf(str, lastmonst);
dam -= hitm(x, y, dam);
show1cell(x, y);
nap(1000);
x -= dx;
y -= dy;
} else
switch (*(p= &item[x][y]))
{
case OWALL:
cursors();
lprc('\n');
lprintf(str, "wall");
if (
/* enough damage? */
dam >= 50 + c[HARDGAME] &&
/* not on V3 */
level < MAXLEVEL + MAXVLEVEL - 1 &&
x < MAXX - 1 && y < MAXY - 1 &&
x != 0 && y != 0) {
lprcat(" The wall crumbles");
*p = 0;
know[x][y] = 0;
show1cell(x, y);
}
dam = 0;
break;
case OCLOSEDDOOR:
cursors();
lprc('\n');
lprintf(str,"door");
if (dam >= 40) {
lprcat(" The door is blasted apart");
*p = 0;
know[x][y] = 0;
show1cell( x, y );
}
dam = 0 ;
break;
case OSTATUE:
cursors();
lprc('\n');
lprintf(str,"statue");
if (c[HARDGAME]<3)
if (dam>44)
{
lprcat(" The statue crumbles");
*p=OBOOK;
iarg[x][y]=level;
know[x][y] = 0;
show1cell( x, y );
}
dam = 0 ;
break;
case OTHRONE:
cursors();
lprc('\n');
lprintf(str,"throne");
if (dam>39)
{
*p = OTHRONE2;
create_guardian( GNOMEKING, x, y );
show1cell( x, y );
}
dam = 0;
break;
case OALTAR:
cursors();
lprc('\n');
lprintf(str, "altar");
if ( dam > 75 - ( c[HARDGAME] >> 2 ))
{
create_guardian( DEMONPRINCE, x, y );
show1cell( x, y );
}
dam = 0 ;
break;
case OFOUNTAIN:
cursors();
lprc('\n');
lprintf(str, "fountain");
if ( dam > 55 )
{
create_guardian( WATERLORD, x, y );
show1cell( x, y );
}
dam = 0 ;
break;
case OMIRROR:
{
int bounce = FALSE, odx = dx, ody = dy ;
/* spells may bounce directly back or off at an angle */
if (rnd(100) < 50) {
bounce = TRUE ;
dx *= -1;
}
if (rnd(100) < 50 ) {
bounce = TRUE ;
dy *= -1;
}
/* guarentee a bounce */
if (!bounce || (odx == dx && ody == dy)) {
dx = -odx;
dy = -ody;
}
}
break;
};
dam -= 3 + (c[HARDGAME]>>1);
}
}
/*
* ifblind(x,y) Routine to put "monster" or the monster name into lastmosnt
* int x,y;
*
* Subroutine to copy the word "monster" into lastmonst if the player is blind
* Enter with the coordinates (x,y) of the monster
* Returns no value.
*/
void ifblind(int x, int y)
{
char *p;
/* verify correct x, y coordinates */
vxy(&x,&y);
if (c[BLINDCOUNT]) {
lastnum = 279;
p = "monster";
} else {
lastnum = mitem[x][y];
p = monster[lastnum].name;
}
strcpy(lastmonst,p);
}
/*
* tdirect(spnum) Routine to teleport away a monster
* int spnum;
*
* Routine to ask for a direction to a spell and then teleport away monster
* Enter with the spell number that wants to teleport away
* Returns no value.
*/
static void tdirect(int spnum)
{
int x, y, m;
/* bad args */
if (spnum < 0 || spnum >= SPNUM) {
return;
}
if (isconfuse()) {
return;
}
dirsub(&x, &y);
m = mitem[x][y];
if (m == 0) {
lprcat(" There wasn't anything there!");
return;
}
ifblind(x, y);
if (nospell(spnum, m)) {
lasthx = x;
lasthy = y;
return;
}
fillmonst(m);
mitem[x][y] = 0;
know[x][y] &= ~KNOWHERE;
}
/*
* omnidirect(sp,dam,str) Routine to damage all monsters 1 square from player
* int sp,dam;
* char *str;
*
* Routine to cast a spell and then hit the monster in all directions
* Enter with the spell number in sp, the damage done to wach square in dam,
* and the lprintf string to identify the spell in str.
* Returns no value.
*/
static void omnidirect(int spnum, int dam, char *str)
{
int x, y, m;
/* bad args */
if (spnum < 0 || spnum >= SPNUM || str == 0) {
return;
}
for (x = playerx - 1; x < playerx + 2; x++) {
for (y = playery - 1; y < playery + 2; y++) {
m = mitem[x][y];
if (m == 0) {
continue;
}
if (nospell(spnum, m) == 0) {
ifblind(x, y);
cursors();
lprc('\n');
lprintf(str, lastmonst);
hitm(x, y, dam);
nap(800);
} else {
lasthx=x;
lasthy=y;
}
}
}
}
/*
* dirsub(x,y) Routine to ask for direction, then modify playerx,
* playery for it
* int *x,*y;
*
* Function to ask for a direction and modify an x,y for that direction
* Enter with the coordinate destination (x,y).
* Returns index into diroffx[] (0-8).
*/
int dirsub(int *x, int *y)
{
int i;
lprcat("\nIn What Direction? ");
for (i = 0; ; ) {
switch(ttgetch()) {
case 'b': i++;
case 'n': i++;
case 'y': i++;
case 'u': i++;
case 'h': i++;
case 'k': i++;
case 'l': i++;
case 'j': i++; goto out;
};
}
out:
*x = playerx+diroffx[i];
*y = playery+diroffy[i];
vxy(x,y);
return i;
}
/*
* dirpoly(spnum) Routine to ask for a direction and polymorph a monst
* int spnum;
*
* Subroutine to polymorph a monster and ask for the direction its in
* Enter with the spell number in spmun.
* Returns no value.
*/
static void dirpoly(int spnum)
{
int x, y, m;
/* bad args */
if (spnum < 0 || spnum >= SPNUM) {
return;
}
/* if he is confused, he can't aim his magic */
if (isconfuse()) {
return;
}
dirsub(&x, &y);
if (mitem[x][y] == 0) {
lprcat(" There wasn't anything there!");
return;
}
ifblind(x,y);
if (nospell(spnum,mitem[x][y])) {
lasthx=x;
lasthy=y;
return;
}
do {
m = rnd(MAXMONST + 7);
mitem[x][y] = m;
} while (monster[m].genocided);
hitp[x][y] = monster[m].hitpoints;
/* show the new monster */
show1cell(x,y);