// Fetch and return the next char from input stream.
void fetchc(void) {
// terrible horrible eeprom addressing kludge
if (isram(fetchptr)) {
if (*fetchptr) fetchptr++;
inchar = *fetchptr;
}
else { // fetch char from eeprom
int addr = dekludge(fetchptr);
inchar = eeread(addr);
if ((inchar != 0) && (inchar != 255)) {
inchar = eeread(++addr);
fetchptr = kludge(addr); // save incremented pointer
if (inchar == 255) inchar = 0;
}
}
#ifdef PARSER_TRACE
// char trace
if (trace) {
//spb('['); printInteger(inchar);spb(':'); if (inchar) spb(inchar); spb(']');
spb('[');
if (inchar >= 0x20) spb(inchar);
else { spb('\\'); printInteger(inchar); }
spb(']');
}
#endif
//return inchar;
}
void prompt(void) {
char buf[IDLEN+1];
// Run the script named "prompt" if there is one else print "> "
strncpy_P(buf, getmsg(M_promptid), IDLEN); // get the name "prompt" in our cmd buf
int entry = findKey(buf);
if (entry >= 0) doCommand(kludge(findend(entry)));
else msgp(M_prompt); // else print default prompt
}
void justswld(struct monst *mtmp, char *name)
{
mtmp->mx = u.ux;
mtmp->my = u.uy;
u.ustuck = mtmp;
pmon(mtmp);
kludge("%s swallows you!", name);
more();
seeoff(1);
u.uswallow = 1;
swallowed();
}
void youswld(struct monst *mtmp, int dam, int die, char *name)
{
if(mtmp != u.ustuck) {
return;
}
kludge("%s digests you!", name);
u.uhp -= dam;
if(u.uswldtim == die) {
++u.uswldtim;
pline("It totally digests you!");
u.uhp = -1;
}
++u.uswldtim;
if(u.uhp < 1) {
done_in_by(mtmp);
}
}
// Get a statement
void getstatement(void) {
#if !defined(TINY85)
chkbreak();
#endif
if (sym == s_while) {
// at this point sym is pointing at s_while, before the conditional expression
// save fetchptr so we can restart parsing from here as the while iterates
char *fetchmark = fetchptr;
for (;;) {
fetchptr = fetchmark; // restore to mark
primec(); // set up for mr. getsym()
getsym(); // fetch the start of the conditional
if (!getnum()) {
//longjmp(env, X_EXIT); // get the conditional; exit on false
sym = s_eof; // we're finished here. move along.
return;
}
if (sym != s_colon) expectedchar(':');
getsym(); // eat :
getstatementlist();
}
}
else if (sym == s_if) {
getsym(); // fetch the start of the conditional
if (!getnum()) {
//longjmp(env, X_EXIT); // get the conditional; exit on false
sym = s_eof;
return;
}
if (sym != s_colon) expectedchar(':');
getsym(); // eat :
getstatementlist();
}
#if SKETCH
// The switch statement: call one of N macros based on a selector value
// switch <numval>: macroid1, macroid2,.., macroidN
// numval < 0: numval = 0
// numval > N: numval = N
else if (sym == s_switch) {
getsym(); // eat "switch"
numvar selector = getnum(); // evaluate the switch value
if (selector < 0) selector = 0;
if (sym != s_colon) expectedchar(':');
// we sit before the first macroid
// scan and discard the <selector>'s worth of macro ids
// that sit before the one we want
for (;;) {
getsym(); // get an id, sets symval to its eeprom addr as a side effect
if (sym != s_macro) expected (6); // TODO: define M_macro instead of 6
getsym(); // eat id, get separator; assume symval is untouched
if ((sym == s_semi) || (sym == s_eof)) break; // last case is default so we exit always
if (sym != s_comma) expectedchar(',');
if (!selector) break; // ok, this is the one we want to execute
selector--; // one down...
}
// call the macro whose addr is squirreled in symval all this time
// on return, the parser is ready to pick up where we left off
doMacroCall(symval);
// scan past the rest of the unused switch options, if any
// TODO: syntax checking for non-chosen options could be made much tighter at the cost of some space
while ((sym != s_semi) && (sym != s_eof)) getsym(); // scan to end of statement without executing
}
#endif
else if ((sym == s_macro) || (sym == s_undef)) { // macro def or ref
getsym(); // scan past macro name to next symbol: ; or :=
if (sym == s_define) { // macro definition: macroid := strvalue
// to define the macro, we need to copy the id somewhere on the stack
// to avoid having this local buffer in every getstatement stack frame,
// we break out defineMacro here to a separate function that only eats that
// stack in the case that a macro is being defined
#ifdef TINY85
unexpected(M_defmacro);
#else
defineMacro();
#endif
}
else if ((sym == s_semi) || (sym == s_eof)) { // valid macro reference: let's call it
#if SKETCH
doMacroCall(symval); // parseid stashes the macro address in symval
#else
char op = sym; // save sym for restore
expval = findKey(idbuf); // assumes id in idbuf isn't clobbered since getsym() above
if (expval >= 0) {
char *fetchmark = fetchptr; // save the current parse pointer
// call the macro
calleeprommacro(findend(expval)); // register the macro into the parser stream
getsym();
getstatementlist(); // parse and execute the macro code here
if (sym != s_eof) expected(M_eof);
// restore parsing context so we can resume cleanly
fetchptr = fetchmark; // restore pointer
primec(); // and inchar
sym = op; // restore saved sym: s_semi or s_eof
} else unexpected(M_id);
#endif
}
else expectedchar(';');
//else getexpression(); // assume it was macro1+32+macro2...
}
else if (sym == s_run) { // run macroname
getsym();
if (sym != s_macro) unexpected(M_id);
#if 0
// address of macroid is in symval via parseid
startTask(kludge(symval));
getsym();
#else
// address of macroid is in symval via parseid
// check for [,snoozeintervalms]
getsym(); // eat macroid to check for comma; symval untouched
if (sym == s_comma) {
vpush(symval);
getsym(); // eat the comma
getnum(); // get a number or else
startTask(kludge(vpop()), expval);
}
else startTask(kludge(symval), 0);
#endif
}
else if (sym == s_stop) {
getsym();
if (sym == s_mul) { // stop * stops all tasks
initTaskList();
getsym();
}
else if ((sym == s_semi) || (sym == s_eof)) {
if (background) stopTask(curtask); // stop with no args stops the current task IF we're in back
else initTaskList(); // in foreground, stop all
}
else stopTask(getnum());
}
else if (sym == s_boot) reboot();
#if !defined(TINY85)
else if (sym == s_rm) { // rm "sym" or rm *
getsym();
if (sym == s_macro) {
eraseentry(idbuf);
}
else if (sym == s_mul) nukeeeprom();
else expected(M_id);
getsym();
}
else if (sym == s_ps) showTaskList();
else if (sym == s_peep) { getsym(); cmd_peep(); }
else if (sym == s_ls) { getsym(); cmd_ls(); }
else if (sym == s_help) { getsym(); cmd_help(); }
else if (sym == s_print) { getsym(); cmd_print(); }
#endif
#ifdef HEX_UPLOAD
// a line beginning with a colon is treated as a hex record
// containing data to upload to eeprom
//
// TODO: verify checksum
//
else if (sym == s_colon) {
// fetchptr points at the byte count
byte byteCount = gethex(2); // 2 bytes byte count
int addr = gethex(4); // 4 bytes address
byte recordType = gethex(2); // 2 bytes record type; now fetchptr -> data
if (recordType == 1) reboot(); // reboot on EOF record (01)
if (recordType != 0) return; // we only handle the data record (00)
if (addr == 0) nukeeeprom(); // auto-clear eeprom on write to 0000
while (byteCount--) eewrite(addr++, gethex(2)); // update the eeprom
gethex(2); // discard the checksum
getsym(); // and re-prime the parser
}
#endif
else {
getexpression();
}
}
// Get a statement
numvar getstatement(void) {
numvar retval = 0;
char *fetchmark;
chkbreak();
//#define LINEMODE
#ifdef LINEMODE
if (sym == s_while) {
// at this point sym is pointing at s_while, before the conditional expression
// save fetchptr so we can restart parsing from here as the while iterates
char *fetchmark = fetchptr;
for (;;) {
fetchptr = fetchmark; // restore to mark
primec(); // set up for mr. getsym()
getsym(); // fetch the start of the conditional
if (!getnum()) {
//longjmp(env, X_EXIT); // get the conditional; exit on false
sym = s_eof; // we're finished here. move along.
return;
}
if (sym != s_colon) expectedchar(':');
getsym(); // eat :
getstatementlist();
}
}
else if (sym == s_if) {
getsym(); // fetch the start of the conditional
if (!getnum()) {
//longjmp(env, X_EXIT); // get the conditional; exit on false
sym = s_eof;
return;
}
if (sym != s_colon) expectedchar(':');
getsym(); // eat :
getstatementlist();
}
// The switch statement: call one of N macros based on a selector value
// switch <numval>: macroid1, macroid2,.., macroidN
// numval < 0: numval = 0
// numval > N: numval = N
else if (sym == s_switch) {
getsym(); // eat "switch"
numvar selector = getnum(); // evaluate the switch value
if (selector < 0) selector = 0;
if (sym != s_colon) expectedchar(':');
// we sit before the first macroid
// scan and discard the <selector>'s worth of macro ids
// that sit before the one we want
for (;;) {
getsym(); // get an id, sets symval to its eeprom addr as a side effect
if (sym != s_macro) expected (6); // TODO: define M_macro instead of 6
getsym(); // eat id, get separator; assume symval is untouched
if ((sym == s_semi) || (sym == s_eof)) break; // last case is default so we exit always
if (sym != s_comma) expectedchar(',');
if (!selector) break; // ok, this is the one we want to execute
selector--; // one down...
}
// call the macro whose addr is squirreled in symval all this time
// on return, the parser is ready to pick up where we left off
domacrocall(symval);
// scan past the rest of the unused switch options, if any
// TODO: syntax checking for non-chosen options could be made much tighter at the cost of some space
while ((sym != s_semi) && (sym != s_eof)) getsym(); // scan to end of statement without executing
}
#else
// new statement handling
if (sym == s_while) {
// at this point sym is pointing at s_while, before the conditional expression
// save fetchptr so we can restart parsing from here as the while iterates
fetchmark = fetchptr;
for (;;) {
fetchptr = fetchmark; // restore to mark
primec(); // set up for mr. getsym()
getsym(); // fetch the start of the conditional
if (getnum()) {
retval = getstatement();
if (sym == s_returning) break; // exit if we caught a return
}
else {
skipstatement();
break;
}
}
}
else if (sym == s_if) {
getsym(); // eat "if"
if (getnum()) {
retval = getstatement();
if (sym == s_else) {
getsym(); // eat "else"
skipstatement();
}
} else {
skipstatement();
if (sym == s_else) {
getsym(); // eat "else"
retval = getstatement();
}
}
}
else if (sym == s_lcurly) {
getsym(); // eat "{"
while ((sym != s_eof) && (sym != s_returning) && (sym != s_rcurly)) retval = getstatement();
if (sym == s_rcurly) getsym(); // eat "}"
}
else if (sym == s_return) {
getsym(); // eat "return"
if ((sym != s_eof) && (sym != s_semi)) retval = getnum();
sym = s_returning; // signal we're returning up the line
}
else if (sym == s_switch) retval = getswitchstatement();
else if (sym == s_function) cmd_function();
#endif
else if (sym == s_run) { // run macroname
getsym();
if (sym != s_macro) unexpected(M_id);
// address of macroid is in symval via parseid
// check for [,snoozeintervalms]
getsym(); // eat macroid to check for comma; symval untouched
if (sym == s_comma) {
vpush(symval);
getsym(); // eat the comma
getnum(); // get a number or else
startTask(kludge(vpop()), expval);
}
else startTask(kludge(symval), 0);
}
else if (sym == s_stop) {
getsym();
if (sym == s_mul) { // stop * stops all tasks
initTaskList();
getsym();
}
else if ((sym == s_semi) || (sym == s_eof)) {
if (background) stopTask(curtask); // stop with no args stops the current task IF we're in back
else initTaskList(); // in foreground, stop all
}
else stopTask(getnum());
}
else if (sym == s_boot) reboot();
#if !defined(TINY85)
else if (sym == s_rm) { // rm "sym" or rm *
getsym();
if (sym == s_macro) {
eraseentry(idbuf);
}
else if (sym == s_mul) nukeeeprom();
else if (sym != s_undef) expected(M_id);
getsym();
}
else if (sym == s_ps) { getsym(); showTaskList(); }
else if (sym == s_peep) { getsym(); cmd_peep(); }
else if (sym == s_ls) { getsym(); cmd_ls(); }
else if (sym == s_help) { getsym(); cmd_help(); }
else if (sym == s_print) { getsym(); cmd_print(); }
else if (sym == s_semi) { ; } // ;)
#endif
#ifdef HEX_UPLOAD
// a line beginning with a colon is treated as a hex record
// containing data to upload to eeprom
//
// TODO: verify checksum
//
else if (sym == s_colon) {
// fetchptr points at the byte count
byte byteCount = gethex(2); // 2 bytes byte count
int addr = gethex(4); // 4 bytes address
byte recordType = gethex(2); // 2 bytes record type; now fetchptr -> data
if (recordType == 1) reboot(); // reboot on EOF record (01)
if (recordType != 0) return; // we only handle the data record (00)
if (addr == 0) nukeeeprom(); // auto-clear eeprom on write to 0000
while (byteCount--) eewrite(addr++, gethex(2)); // update the eeprom
gethex(2); // discard the checksum
getsym(); // and re-prime the parser
}
#endif
else getexpression();
if (sym == s_semi) getsym(); // eat trailing ';'
return retval;
}
// call macro in eeprom
void calleeprommacro(int macrotext) {
// terrible horrible eeprom kludge
//callmacro(kludge(macrotext));
fetchptr = kludge(macrotext);
primec();
}
/*
* mhitu: monster hits you
* returns 1 if monster dies (e.g. 'y', 'F'), 0 otherwise
*/
bool
mhitu(struct monst *mtmp)
{
struct permonst *mdat = mtmp->data;
int tmp, ctmp;
nomul(0);
/* If swallowed, can only be affected by hissers and by u.ustuck */
if (u.uswallow) {
if (mtmp != u.ustuck) {
if (mdat->mlet == 'c' && !rn2(13)) {
pline("Outside, you hear %s's hissing!",
monnam(mtmp));
pline("%s gets turned to stone!",
Monnam(u.ustuck));
pline("And the same fate befalls you.");
done_in_by(mtmp);
/* "notreached": not return(1); */
}
return (0);
}
switch (mdat->mlet) { /* now mtmp == u.ustuck */
case ',':
youswld(mtmp, (u.uac > 0) ? u.uac + 4 : 4,
5, "The trapper");
break;
case '\'':
youswld(mtmp, rnd(6), 7, "The lurker above");
break;
case 'P':
youswld(mtmp, d(2, 4), 12, "The purple worm");
break;
default:
/* This is not impossible! */
pline("The mysterious monster totally digests you.");
u.uhp = 0;
}
if (u.uhp < 1)
done_in_by(mtmp);
return (0);
}
if (mdat->mlet == 'c' && Stoned)
return (0);
/* make eels visible the moment they hit/miss us */
if (mdat->mlet == ';' && mtmp->minvis && cansee(mtmp->mx, mtmp->my)) {
mtmp->minvis = 0;
pmon(mtmp);
}
if (!strchr("1&DuxynNF", mdat->mlet))
tmp = hitu(mtmp, d(mdat->damn, mdat->damd));
else
tmp = 0;
if (strchr(UNDEAD, mdat->mlet) && midnight())
tmp += hitu(mtmp, d(mdat->damn, mdat->damd));
ctmp = tmp && !mtmp->mcan &&
(!uarm || objects[uarm->otyp].a_can < rnd(3) || !rn2(50));
switch (mdat->mlet) {
case '1':
if (wiz_hit(mtmp)) /* he disappeared */
return (1);
break;
case '&':
if (!mtmp->cham && !mtmp->mcan && !rn2(13)) {
makemon(PM_DEMON, u.ux, u.uy);
} else {
hitu(mtmp, d(2, 6));
hitu(mtmp, d(2, 6));
hitu(mtmp, rnd(3));
hitu(mtmp, rnd(3));
hitu(mtmp, rn1(4, 2));
}
break;
case ',':
if (tmp)
justswld(mtmp, "The trapper");
break;
case '\'':
if (tmp)
justswld(mtmp, "The lurker above");
break;
case ';':
if (ctmp) {
if (!u.ustuck && !rn2(10)) {
pline("%s swings itself around you!",
Monnam(mtmp));
u.ustuck = mtmp;
} else if (u.ustuck == mtmp &&
levl[mtmp->mx][mtmp->my].typ == POOL) {
pline("%s drowns you ...", Monnam(mtmp));
done("drowned");
}
}
break;
case 'A':
if (ctmp && rn2(2)) {
if (Poison_resistance)
pline("The sting doesn't seem to affect you.");
else {
pline("You feel weaker!");
losestr(1);
}
}
break;
case 'C':
hitu(mtmp, rnd(6));
break;
case 'c':
if (!rn2(5)) {
pline("You hear %s's hissing!", monnam(mtmp));
if (ctmp || !rn2(20) || (flags.moonphase == NEW_MOON
&& !carrying(DEAD_LIZARD)))
Stoned = 5;
}
break;
case 'D':
if (rn2(6) || mtmp->mcan) {
hitu(mtmp, d(3, 10));
hitu(mtmp, rnd(8));
hitu(mtmp, rnd(8));
break;
}
kludge("%s breathes fire!", "The dragon");
buzz(-1, mtmp->mx, mtmp->my, u.ux - mtmp->mx, u.uy - mtmp->my);
break;
case 'd':
hitu(mtmp, d(2, (flags.moonphase == FULL_MOON) ? 3 : 4));
break;
case 'e':
hitu(mtmp, d(3, 6));
break;
case 'F':
if (mtmp->mcan)
break;
kludge("%s explodes!", "The freezing sphere");
if (Cold_resistance)
pline("You don't seem affected by it.");
else {
xchar dn;
if (17 - (u.ulevel / 2) > rnd(20)) {
pline("You get blasted!");
dn = 6;
} else {
pline("You duck the blast...");
dn = 3;
}
losehp_m(d(dn, 6), mtmp);
}
mondead(mtmp);
return (1);
case 'g':
if (ctmp && multi >= 0 && !rn2(3)) {
kludge("You are frozen by %ss juices", "the cube'");
nomul(-rnd(10));
}
break;
case 'h':
if (ctmp && multi >= 0 && !rn2(5)) {
nomul(-rnd(10));
kludge("You are put to sleep by %ss bite!",
"the homunculus'");
}
break;
case 'j':
tmp = hitu(mtmp, rnd(3));
tmp &= hitu(mtmp, rnd(3));
if (tmp) {
hitu(mtmp, rnd(4));
hitu(mtmp, rnd(4));
}
break;
case 'k':
if ((hitu(mtmp, rnd(4)) || !rn2(3)) && ctmp)
poisoned("bee's sting", mdat->mname);
break;
case 'L':
if (tmp)
stealgold(mtmp);
break;
case 'N':
if (mtmp->mcan && !Blind) {
pline("%s tries to seduce you, but you seem not interested.",
Amonnam(mtmp, "plain"));
if (rn2(3))
rloc(mtmp);
} else if (steal(mtmp)) {
rloc(mtmp);
mtmp->mflee = 1;
}
break;
case 'n':
if (!uwep && !uarm && !uarmh && !uarms && !uarmg) {
pline("%s hits! (I hope you don't mind)",
Monnam(mtmp));
u.uhp += rnd(7);
if (!rn2(7))
u.uhpmax++;
if (u.uhp > u.uhpmax)
u.uhp = u.uhpmax;
flags.botl = 1;
if (!rn2(50))
rloc(mtmp);
} else {
hitu(mtmp, d(2, 6));
hitu(mtmp, d(2, 6));
}
break;
case 'o':
tmp = hitu(mtmp, rnd(6));
if (hitu(mtmp, rnd(6)) && tmp && /* hits with both paws */
!u.ustuck && rn2(2)) {
u.ustuck = mtmp;
kludge("%s has grabbed you!", "The owlbear");
u.uhp -= d(2, 8);
} else if (u.ustuck == mtmp) {
u.uhp -= d(2, 8);
pline("You are being crushed.");
}
break;
case 'P':
if (ctmp && !rn2(4))
justswld(mtmp, "The purple worm");
else
hitu(mtmp, d(2, 4));
break;
case 'Q':
hitu(mtmp, rnd(2));
hitu(mtmp, rnd(2));
break;
case 'R':
if (tmp && uarmh && !uarmh->rustfree &&
(int)uarmh->spe >= -1) {
pline("Your helmet rusts!");
uarmh->spe--;
} else if (ctmp && uarm && !uarm->rustfree && /* Mike Newton */
uarm->otyp < STUDDED_LEATHER_ARMOR &&
(int)uarm->spe >= -1) {
pline("Your armor rusts!");
uarm->spe--;
}
break;
case 'S':
if (ctmp && !rn2(8))
poisoned("snake's bite", mdat->mname);
break;
case 's':
if (tmp && !rn2(8))
poisoned("scorpion's sting", mdat->mname);
hitu(mtmp, rnd(8));
hitu(mtmp, rnd(8));
break;
case 'T':
hitu(mtmp, rnd(6));
hitu(mtmp, rnd(6));
break;
case 't':
if (!rn2(5))
rloc(mtmp);
break;
case 'u':
mtmp->mflee = 1;
break;
case 'U':
hitu(mtmp, d(3, 4));
hitu(mtmp, d(3, 4));
break;
case 'v':
if (ctmp && !u.ustuck)
u.ustuck = mtmp;
break;
case 'V':
if (tmp)
u.uhp -= 4;
if (ctmp)
losexp();
break;
case 'W':
if (ctmp)
losexp();
break;
#ifndef NOWORM
case 'w':
if (tmp)
wormhit(mtmp);
#endif /* NOWORM */
break;
case 'X':
hitu(mtmp, rnd(5));
hitu(mtmp, rnd(5));
hitu(mtmp, rnd(5));
break;
case 'x':
{
long side = rn2(2) ? RIGHT_SIDE : LEFT_SIDE;
pline("%s pricks in your %s leg!",
Monnam(mtmp), (side == RIGHT_SIDE) ? "right" : "left");
set_wounded_legs(side, rnd(50));
losehp_m(2, mtmp);
break;
}
case 'y':
if (mtmp->mcan)
break;
mondead(mtmp);
if (!Blind) {
pline("You are blinded by a blast of light!");
Blind = d(4, 12);
seeoff(0);
}
return (1);
case 'Y':
hitu(mtmp, rnd(6));
break;
}
if (u.uhp < 1)
done_in_by(mtmp);
return (0);
}
