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Initial import, 0.1 + pk 0.2.4-B1
[unix-history] / games / larn / global.c
/* global.c Larn is copyrighted 1986 by Noah Morgan.
*
* raiselevel() subroutine to raise the player one level
* loselevel() subroutine to lower the player by one level
* raiseexperience(x) subroutine to increase experience points
* loseexperience(x) subroutine to lose experience points
* losehp(x) subroutine to remove hit points from the player
* losemhp(x) subroutine to remove max # hit points from the player
* raisehp(x) subroutine to gain hit points
* raisemhp(x) subroutine to gain maximum hit points
* losespells(x) subroutine to lose spells
* losemspells(x) subroutine to lose maximum spells
* raisespells(x) subroutine to gain spells
* raisemspells(x) subroutine to gain maximum spells
* recalc() function to recalculate the armor class of the player
* makemonst(lev) function to return monster number for a randomly selected monster
* positionplayer() function to be sure player is not in a wall
* quit() subroutine to ask if the player really wants to quit
*/
#include "header.h"
extern int score[],srcount,dropflag;
extern int random;/* the random number seed */
extern short playerx,playery,lastnum;
extern char cheat,level,monstnamelist[];
extern char lastmonst[],*what[],*who[];
extern char winner[];
extern char logname[],monstlevel[];
extern char sciv[SCORESIZE+1][26][2],*potionname[],*scrollname[];
/*
***********
RAISE LEVEL
***********
raiselevel()
subroutine to raise the player one level
uses the skill[] array to find level boundarys
uses c[EXPERIENCE] c[LEVEL]
*/
raiselevel()
{
if (c[LEVEL] < MAXPLEVEL) raiseexperience((long)(skill[c[LEVEL]]-c[EXPERIENCE]));
}
/*
***********
LOOSE LEVEL
***********
loselevel()
subroutine to lower the players character level by one
*/
loselevel()
{
if (c[LEVEL] > 1) loseexperience((long)(c[EXPERIENCE] - skill[c[LEVEL]-1] + 1));
}
/*
****************
RAISE EXPERIENCE
****************
raiseexperience(x)
subroutine to increase experience points
*/
raiseexperience(x)
register long x;
{
register int i,tmp;
i=c[LEVEL]; c[EXPERIENCE]+=x;
while (c[EXPERIENCE] >= skill[c[LEVEL]] && (c[LEVEL] < MAXPLEVEL))
{
tmp = (c[CONSTITUTION]-c[HARDGAME])>>1;
c[LEVEL]++; raisemhp((int)(rnd(3)+rnd((tmp>0)?tmp:1)));
raisemspells((int)rund(3));
if (c[LEVEL] < 7-c[HARDGAME]) raisemhp((int)(c[CONSTITUTION]>>2));
}
if (c[LEVEL] != i)
{
cursors();
beep(); lprintf("\nWelcome to level %d",(long)c[LEVEL]); /* if we changed levels */
}
bottomline();
}
/*
****************
LOOSE EXPERIENCE
****************
loseexperience(x)
subroutine to lose experience points
*/
loseexperience(x)
register long x;
{
register int i,tmp;
i=c[LEVEL]; c[EXPERIENCE]-=x;
if (c[EXPERIENCE] < 0) c[EXPERIENCE]=0;
while (c[EXPERIENCE] < skill[c[LEVEL]-1])
{
if (--c[LEVEL] <= 1) c[LEVEL]=1; /* down one level */
tmp = (c[CONSTITUTION]-c[HARDGAME])>>1; /* lose hpoints */
losemhp((int)rnd((tmp>0)?tmp:1)); /* lose hpoints */
if (c[LEVEL] < 7-c[HARDGAME]) losemhp((int)(c[CONSTITUTION]>>2));
losemspells((int)rund(3)); /* lose spells */
}
if (i!=c[LEVEL])
{
cursors();
beep(); lprintf("\nYou went down to level %d!",(long)c[LEVEL]);
}
bottomline();
}
/*
********
LOOSE HP
********
losehp(x)
losemhp(x)
subroutine to remove hit points from the player
warning -- will kill player if hp goes to zero
*/
losehp(x)
register int x;
{
if ((c[HP] -= x) <= 0)
{
beep(); lprcat("\n"); nap(3000); died(lastnum);
}
}
losemhp(x)
register int x;
{
c[HP] -= x; if (c[HP] < 1) c[HP]=1;
c[HPMAX] -= x; if (c[HPMAX] < 1) c[HPMAX]=1;
}
/*
********
RAISE HP
********
raisehp(x)
raisemhp(x)
subroutine to gain maximum hit points
*/
raisehp(x)
register int x;
{
if ((c[HP] += x) > c[HPMAX]) c[HP] = c[HPMAX];
}
raisemhp(x)
register int x;
{
c[HPMAX] += x; c[HP] += x;
}
/*
************
RAISE SPELLS
************
raisespells(x)
raisemspells(x)
subroutine to gain maximum spells
*/
raisespells(x)
register int x;
{
if ((c[SPELLS] += x) > c[SPELLMAX]) c[SPELLS] = c[SPELLMAX];
}
raisemspells(x)
register int x;
{
c[SPELLMAX]+=x; c[SPELLS]+=x;
}
/*
************
LOOSE SPELLS
************
losespells(x)
losemspells(x)
subroutine to lose maximum spells
*/
losespells(x)
register int x;
{
if ((c[SPELLS] -= x) < 0) c[SPELLS]=0;
}
losemspells(x)
register int x;
{
if ((c[SPELLMAX] -= x) < 0) c[SPELLMAX]=0;
if ((c[SPELLS] -= x) < 0) c[SPELLS]=0;
}
/*
makemonst(lev)
int lev;
function to return monster number for a randomly selected monster
for the given cave level
*/
makemonst(lev)
register int lev;
{
register int tmp,x;
if (lev < 1) lev = 1; if (lev > 12) lev = 12;
tmp=WATERLORD;
if (lev < 5)
while (tmp==WATERLORD) tmp=rnd((x=monstlevel[lev-1])?x:1);
else while (tmp==WATERLORD)
tmp=rnd((x=monstlevel[lev-1]-monstlevel[lev-4])?x:1)+monstlevel[lev-4];
while (monster[tmp].genocided && tmp<MAXMONST) tmp++; /* genocided? */
return(tmp);
}
/*
positionplayer()
function to be sure player is not in a wall
*/
positionplayer()
{
int try;
try = 2;
while ((item[playerx][playery] || mitem[playerx][playery]) && (try))
if (++playerx >= MAXX-1)
{
playerx = 1;
if (++playery >= MAXY-1)
{ playery = 1; --try; }
}
if (try==0) lprcat("Failure in positionplayer\n");
}
/*
recalc() function to recalculate the armor class of the player
*/
recalc()
{
register int i,j,k;
c[AC] = c[MOREDEFENSES];
if (c[WEAR] >= 0)
switch(iven[c[WEAR]])
{
case OSHIELD: c[AC] += 2 + ivenarg[c[WEAR]]; break;
case OLEATHER: c[AC] += 2 + ivenarg[c[WEAR]]; break;
case OSTUDLEATHER: c[AC] += 3 + ivenarg[c[WEAR]]; break;
case ORING: c[AC] += 5 + ivenarg[c[WEAR]]; break;
case OCHAIN: c[AC] += 6 + ivenarg[c[WEAR]]; break;
case OSPLINT: c[AC] += 7 + ivenarg[c[WEAR]]; break;
case OPLATE: c[AC] += 9 + ivenarg[c[WEAR]]; break;
case OPLATEARMOR: c[AC] += 10 + ivenarg[c[WEAR]]; break;
case OSSPLATE: c[AC] += 12 + ivenarg[c[WEAR]]; break;
}
if (c[SHIELD] >= 0) if (iven[c[SHIELD]] == OSHIELD) c[AC] += 2 + ivenarg[c[SHIELD]];
if (c[WIELD] < 0) c[WCLASS] = 0; else
{
i = ivenarg[c[WIELD]];
switch(iven[c[WIELD]])
{
case ODAGGER: c[WCLASS] = 3 + i; break;
case OBELT: c[WCLASS] = 7 + i; break;
case OSHIELD: c[WCLASS] = 8 + i; break;
case OSPEAR: c[WCLASS] = 10 + i; break;
case OFLAIL: c[WCLASS] = 14 + i; break;
case OBATTLEAXE: c[WCLASS] = 17 + i; break;
case OLANCE: c[WCLASS] = 19 + i; break;
case OLONGSWORD: c[WCLASS] = 22 + i; break;
case O2SWORD: c[WCLASS] = 26 + i; break;
case OSWORD: c[WCLASS] = 32 + i; break;
case OSWORDofSLASHING: c[WCLASS] = 30 + i; break;
case OHAMMER: c[WCLASS] = 35 + i; break;
default: c[WCLASS] = 0;
}
}
c[WCLASS] += c[MOREDAM];
/* now for regeneration abilities based on rings */
c[REGEN]=1; c[ENERGY]=0;
j=0; for (k=25; k>0; k--) if (iven[k]) {j=k; k=0; }
for (i=0; i<=j; i++)
{
switch(iven[i])
{
case OPROTRING: c[AC] += ivenarg[i] + 1; break;
case ODAMRING: c[WCLASS] += ivenarg[i] + 1; break;
case OBELT: c[WCLASS] += ((ivenarg[i]<<1)) + 2; break;
case OREGENRING: c[REGEN] += ivenarg[i] + 1; break;
case ORINGOFEXTRA: c[REGEN] += 5 * (ivenarg[i]+1); break;
case OENERGYRING: c[ENERGY] += ivenarg[i] + 1; break;
}
}
}
/*
quit()
subroutine to ask if the player really wants to quit
*/
quit()
{
register int i;
cursors(); strcpy(lastmonst,"");
lprcat("\n\nDo you really want to quit?");
while (1)
{
i=getchar();
if (i == 'y') { died(300); return; }
if ((i == 'n') || (i == '\33')) { lprcat(" no"); lflush(); return; }
lprcat("\n"); setbold(); lprcat("Yes"); resetbold(); lprcat(" or ");
setbold(); lprcat("No"); resetbold(); lprcat(" please? Do you want to quit? ");
}
}
/*
function to ask --more-- then the user must enter a space
*/
more()
{
lprcat("\n --- press "); standout("space"); lprcat(" to continue --- ");
while (getchar() != ' ');
}
/*
function to put something in the players inventory
returns 0 if success, 1 if a failure
*/
take(itm,arg)
int itm,arg;
{
register int i,limit;
/* cursors(); */
if ((limit = 15+(c[LEVEL]>>1)) > 26) limit=26;
for (i=0; i<limit; i++)
if (iven[i]==0)
{
iven[i] = itm; ivenarg[i] = arg; limit=0;
switch(itm)
{
case OPROTRING: case ODAMRING: case OBELT: limit=1; break;
case ODEXRING: c[DEXTERITY] += ivenarg[i]+1; limit=1; break;
case OSTRRING: c[STREXTRA] += ivenarg[i]+1; limit=1; break;
case OCLEVERRING: c[INTELLIGENCE] += ivenarg[i]+1; limit=1; break;
case OHAMMER: c[DEXTERITY] += 10; c[STREXTRA]+=10;
c[INTELLIGENCE]-=10; limit=1; break;
case OORBOFDRAGON: c[SLAYING]++; break;
case OSPIRITSCARAB: c[NEGATESPIRIT]++; break;
case OCUBEofUNDEAD: c[CUBEofUNDEAD]++; break;
case ONOTHEFT: c[NOTHEFT]++; break;
case OSWORDofSLASHING: c[DEXTERITY] +=5; limit=1; break;
};
lprcat("\nYou pick up:"); srcount=0; show3(i);
if (limit) bottomline(); return(0);
}
lprcat("\nYou can't carry anything else"); return(1);
}
/*
subroutine to drop an object returns 1 if something there already else 0
*/
drop_object(k)
int k;
{
int itm;
if ((k<0) || (k>25)) return(0);
itm = iven[k]; cursors();
if (itm==0) { lprintf("\nYou don't have item %c! ",k+'a'); return(1); }
if (item[playerx][playery])
{ beep(); lprcat("\nThere's something here already"); return(1); }
if (playery==MAXY-1 && playerx==33) return(1); /* not in entrance */
item[playerx][playery] = itm;
iarg[playerx][playery] = ivenarg[k];
srcount=0; lprcat("\n You drop:"); show3(k); /* show what item you dropped*/
know[playerx][playery] = 0; iven[k]=0;
if (c[WIELD]==k) c[WIELD]= -1; if (c[WEAR]==k) c[WEAR] = -1;
if (c[SHIELD]==k) c[SHIELD]= -1;
adjustcvalues(itm,ivenarg[k]);
dropflag=1; /* say dropped an item so wont ask to pick it up right away */
return(0);
}
/*
function to enchant armor player is currently wearing
*/
enchantarmor()
{
register int tmp;
if (c[WEAR]<0) { if (c[SHIELD] < 0)
{ cursors(); beep(); lprcat("\nYou feel a sense of loss"); return; }
else { tmp=iven[c[SHIELD]]; if (tmp != OSCROLL) if (tmp != OPOTION) { ivenarg[c[SHIELD]]++; bottomline(); } } }
tmp = iven[c[WEAR]];
if (tmp!=OSCROLL) if (tmp!=OPOTION) { ivenarg[c[WEAR]]++; bottomline(); }
}
/*
function to enchant a weapon presently being wielded
*/
enchweapon()
{
register int tmp;
if (c[WIELD]<0)
{ cursors(); beep(); lprcat("\nYou feel a sense of loss"); return; }
tmp = iven[c[WIELD]];
if (tmp!=OSCROLL) if (tmp!=OPOTION)
{ ivenarg[c[WIELD]]++;
if (tmp==OCLEVERRING) c[INTELLIGENCE]++; else
if (tmp==OSTRRING) c[STREXTRA]++; else
if (tmp==ODEXRING) c[DEXTERITY]++; bottomline(); }
}
/*
routine to tell if player can carry one more thing
returns 1 if pockets are full, else 0
*/
pocketfull()
{
register int i,limit;
if ((limit = 15+(c[LEVEL]>>1)) > 26) limit=26;
for (i=0; i<limit; i++) if (iven[i]==0) return(0);
return(1);
}
/*
function to return 1 if a monster is next to the player else returns 0
*/
nearbymonst()
{
register int tmp,tmp2;
for (tmp=playerx-1; tmp<playerx+2; tmp++)
for (tmp2=playery-1; tmp2<playery+2; tmp2++)
if (mitem[tmp][tmp2]) return(1); /* if monster nearby */
return(0);
}
/*
function to steal an item from the players pockets
returns 1 if steals something else returns 0
*/
stealsomething()
{
register int i,j;
j=100;
while (1)
{
i=rund(26);
if (iven[i]) if (c[WEAR]!=i) if (c[WIELD]!=i) if (c[SHIELD]!=i)
{
srcount=0; show3(i);
adjustcvalues(iven[i],ivenarg[i]); iven[i]=0; return(1);
}
if (--j <= 0) return(0);
}
}
/*
function to return 1 is player carrys nothing else return 0
*/
emptyhanded()
{
register int i;
for (i=0; i<26; i++)
if (iven[i]) if (i!=c[WIELD]) if (i!=c[WEAR]) if (i!=c[SHIELD]) return(0);
return(1);
}
/*
function to create a gem on a square near the player
*/
creategem()
{
register int i,j;
switch(rnd(4))
{
case 1: i=ODIAMOND; j=50; break;
case 2: i=ORUBY; j=40; break;
case 3: i=OEMERALD; j=30; break;
default: i=OSAPPHIRE; j=20; break;
};
createitem(i,rnd(j)+j/10);
}
/*
function to change character levels as needed when dropping an object
that affects these characteristics
*/
adjustcvalues(itm,arg)
int itm,arg;
{
register int flag;
flag=0;
switch(itm)
{
case ODEXRING: c[DEXTERITY] -= arg+1; flag=1; break;
case OSTRRING: c[STREXTRA] -= arg+1; flag=1; break;
case OCLEVERRING: c[INTELLIGENCE] -= arg+1; flag=1; break;
case OHAMMER: c[DEXTERITY] -= 10; c[STREXTRA] -= 10;
c[INTELLIGENCE] += 10; flag=1; break;
case OSWORDofSLASHING: c[DEXTERITY] -= 5; flag=1; break;
case OORBOFDRAGON: --c[SLAYING]; return;
case OSPIRITSCARAB: --c[NEGATESPIRIT]; return;
case OCUBEofUNDEAD: --c[CUBEofUNDEAD]; return;
case ONOTHEFT: --c[NOTHEFT]; return;
case OLANCE: c[LANCEDEATH]=0; return;
case OPOTION: case OSCROLL: return;
default: flag=1;
};
if (flag) bottomline();
}
/*
function to read a string from token input "string"
returns a pointer to the string
*/
gettokstr(str)
register char *str;
{
register int i,j;
i=50;
while ((getchar() != '"') && (--i > 0));
i=36;
while (--i > 0)
{
if ((j=getchar()) != '"') *str++ = j; else i=0;
}
*str = 0;
i=50;
if (j != '"') while ((getchar() != '"') && (--i > 0)); /* if end due to too long, then find closing quote */
}
/*
function to ask user for a password (no echo)
returns 1 if entered correctly, 0 if not
*/
static char gpwbuf[33];
getpassword()
{
register int i,j;
register char *gpwp;
extern char *password;
scbr(); /* system("stty -echo cbreak"); */
gpwp = gpwbuf; lprcat("\nEnter Password: "); lflush();
i = strlen(password);
for (j=0; j<i; j++) read(0,gpwp++,1); gpwbuf[i]=0;
sncbr(); /* system("stty echo -cbreak"); */
if (strcmp(gpwbuf,password) != 0)
{ lprcat("\nSorry\n"); lflush(); return(0); }
else return(1);
}
/*
subroutine to get a yes or no response from the user
returns y or n
*/
getyn()
{
register int i;
i=0; while (i!='y' && i!='n' && i!='\33') i=getchar();
return(i);
}
/*
function to calculate the pack weight of the player
returns the number of pounds the player is carrying
*/
packweight()
{
register int i,j,k;
k=c[GOLD]/1000; j=25; while ((iven[j]==0) && (j>0)) --j;
for (i=0; i<=j; i++)
switch(iven[i])
{
case 0: break;
case OSSPLATE: case OPLATEARMOR: k += 40; break;
case OPLATE: k += 35; break;
case OHAMMER: k += 30; break;
case OSPLINT: k += 26; break;
case OSWORDofSLASHING: case OCHAIN:
case OBATTLEAXE: case O2SWORD: k += 23; break;
case OLONGSWORD: case OSWORD:
case ORING: case OFLAIL: k += 20; break;
case OLANCE: case OSTUDLEATHER: k += 15; break;
case OLEATHER: case OSPEAR: k += 8; break;
case OORBOFDRAGON: case OBELT: k += 4; break;
case OSHIELD: k += 7; break;
case OCHEST: k += 30 + ivenarg[i]; break;
default: k++;
};
return(k);
}
#ifndef MACRORND
/* macros to generate random numbers 1<=rnd(N)<=N 0<=rund(N)<=N-1 */
rnd(x)
int x;
{
return((((randx=randx*1103515245+12345)>>7)%(x))+1);
}
rund(x)
int x;
{
return((((randx=randx*1103515245+12345)>>7)%(x)) );
}
#endif MACRORND
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.