When makemon was called with all-zero arguments (e.g. for random
monster generation over time), ptr==NULL means "a random monster".
This was being forwarded to mon==NULL in makemon_rnd_goodpos, and
then mtmp==NULL in goodpos, which means "an object, not a monster".
Because objects can be generated under monsters, this meant that an
attempt to create a random monster could end up choosing a location
that already had a monster, which would then cause the monster
generation to fail.
This mostly wasn't noticeable in normal play: it effectively
reduced the monster generation rate depending on how many locations
outside LOS happened to contain a monster. Normally that's a very
small proportion, so the bug had no obvious effects: but when there
are very few locations outside LOS (i.e. the player can see almost
every location on the level), the bug effectively caused monster
generation to stop once those locations became occupied by
non-moving (e.g. hiding) monsters, something that became observable
in games where the player decided to dig out and light almost an
entire level.
This commit fixes the problem by adding a new flag to goodpos that
requests that it not choose a position that already has a monster.
This bug was diagnosed, and this fix committed, by ais523; but
nhmall wrote almost all of the code implementing the fix.
Insert a space between cast operator and target.
For 'x | y' expression spanning multiple lines, split with bitwise OR
operator at the beginning of second line instead at the end of first.
I changed a macro that was expanding to 'expr_1; expr_2' into
'(expr_1, expr_2)'. Both expressions modify arg 'a' which would be
a no-no within a single expression, but the comma operator provides a
sequence point that guarantees that the first expression will be fully
evaluated with side-effects--assignment to 'a'--completed before the
second one starts, making both assignments be well defined.
Add a new boolean option showdamage, if on, outputs a message
like "[HP -2, 14 left]" - several variants have something similar,
but I chose the message based on how eSpeak said it, while keeping
it short.
A bunch of routines return a pointer which is never Null but weren't
telling the compiler that such was the case. A couple (strsubst(),
stripchars()) were accepting Null output argument and then returning
Null, but callers had no reason to use them that way, so they've been
changed. (upstart() could have been changed similarly; I've already
forgotten why I left it as-is.)
The recent "trap.c reformatting" commit included a non-formatting
change switching from gb.bhitpos.x,.y to local x,y in the rolling
boudler trap routine. The part of that routine used when a rolling
boulder hits another boulder and transfers its remaining momentum
to that other one got switched to wrong x,y and the first boulder
basically kept going, possibly hitting itself at each new position.
DUMPLOG requests the DUMPLOG feature as it does now
DUMPLOG_CORE requests the internal buffering only (used for CRASHREPORT)
This allows CRASHREPORT to access recent messages without performing
any file I/O.
Note: Original change is from xNetHack by copperwater <aosdict@gmail.com>,
but this commit comes from HACKEM-MUCHE by Erik Lunna, with
some minor code formatting.
From xNetHack commit a0a6103bea:
'The original goal: nerf item destruction using a method I initially
proposed for SpliceHack, in which the number of items subject to
damage from any single source is limited by the amount of damage the
effect caused. The intent was to be more fair all around and prevent
aggravating situations where, for instance, a chest shock trap zaps
you for 4 damage and immediately ten of your rings and wands blow up.
Problem 1: no easy way to limit the items destroyed without biasing
heavily towards the start of the invent chain. The old code was able
to get away without bias by just indiscriminately destroying
everything eligible with a 1/3 chance. Here, I had to introduce
reservoir sampling in a somewhat more complex form than I've applied
it elsewhere, since there are a pool of potential items.
Problem 2: destroy_item no longer worked remotely like destroy_mitem,
which still destroyed 1/3 of items indiscriminately. Commence the
process of squishing them into one function that handles both the
player and monsters. (Which required making a lot of adjustments to
destroy_one_item, now named maybe_destroy_item, on nits such as
messaging and when to negate damage. An annoying consequence of the
merge is that in the player case, their HP is deducted and they can
be killed directly, but for monsters they need to add up the
destruction damage and return it.)
Unifying destroy_item and destroy_mitem has some advantages: in
addition to the obvious code duplication removal, it ensures monsters
now take the same damage as players for destruction (previously they
took a piddly 1 damage per destroyed item). Now when you hit
something with Mjollnir and their coveted wand of death breaks apart
and explodes, you at least get the satisfaction of knowing they took
the standard amount of damage from it. Monsters also now get
symmetry with players in having extrinsic elemental resistance
protect them from item destruction, and damage negation from item
destruction if they were appropriately resistant.
Problem 3: a lot of callers didn't preserve the "amount of incoming
damage" that this refactor relies on. E.g. if the defender resisted
that element, the local dmg variable would be set to 0. So I had to
do some wrangling with callers to save that original damage
value. The rule of thumb is: all *incoming* damage counts. So that
includes the player's spellcasting bonus if applicable, but not
things like half damage, negation due to resistance, or extra damage
due to being vulnerable to cold/fire.
Then I figured, while I'm here let's get rid of all those silly cases
where destroy_items is called multiple times for various different
object classes, and cut the object class parameter out of it. This
has a few minor effects:
- Places where different object classes previously rolled
independently for destruction to happen at all now roll
once. (Which, by my calculation, generally means less incidences of
destruction - a fire attack now won't have three separate chances
to hit your scrolls, potions, and spellbooks. On the flip side, a
lucky roll will no longer save an entire object class in your
inventory.)
- Callers can no longer specify different probabilities for
destroying different object classes. The only place this was really
used was to call destroy_item with a slightly lower probability on
SPBOOK_CLASS. With the nerf in this commit, less of them ought to
be destroyed anyway.
- A very edge case of where explosion-vs-monster damage was totted up
differently for golems, which could result in differences of a hit
point here or there.
- All object classes being processed in one go means that less items
are destroyed than would be if they were still processed
independently. This is not really visible compared to the old
baseline of just destroying 33% of everything, but would be a
marked difference versus a copy of the game that still called
destroy_items separately for different object classes. To
compensate, I adjusted my planned damage-to-destruction-limit
scaling factor down from 8 to 5.
Not done: merging in ignite_items(), though that would probably be
really easy now.'
Notes from porting from xNetHack:
- It might be necessary to reexamine at all the conditional checks for
calling destroy_items. Because item destruction is much more
restrained and uses the actual damage from an effect, we might now
need to check 'if (!rn2(3))' and similar in all the places item
destruction occurs.
Monstly changing '<type>* <var>' to '<type> *<var>'. Wrap or shorten
a few wide lines.
One of the rolling boulder routines accessed gb.bhitpos.x,y many times;
change that to use local x,y instead.
If a punished hero's inventory is empty, have a nymph usually take
off the attached chain and indirectly fix punishment. If hero is
trapped by being chained to a buried iron ball, sometimes take off
the implicit chain and indirectly release hero from the trap.
Monkeys won't do this and nymphs will only do so if there is no
inventory (aside from gold and/or embedded dragon scales which they
aren't allowed to target).
It's a lot simpler than I was expecting when I wrote the TODO about
it recently.
If a trap is blocking levitation or flight and you use wand of opening
or spell of knock to get out, you'd get things like
|You start to float in the air!
|You are released from the bear trap.
Give the release message before the actual untrapping.
Simplify the valid-position highlighting via '$' by combining the
tmp_at(start) and tmp_at(populate) steps.
Add highlighting for a couple of targetting operations that would
give valid/invalid feedback via autodescribe but weren't displaying
highlight markers for $.
I made several jumping changes, most of them dealing with picking
hero's own spot.
Redo getpos() highlighting. If bgcolors is Off, '$' toggles between
no highlighting and showing dollar signs at valid spots. ^R removes
those if they're present. When bgcolors is On, '$' cycles among
three settings: highlighting via background color, no highlighting,
and highlighting by drawing dollar sign characters. ^R switches to
background color mode.
This doesn't directly solve the problem of background color causing
conflict with the foreground color of some objects or monsters, but
being able to get rid of the background with a keystroke should be an
improvement.
'bgcolors' defaults to On, which was a problem for tty when 'color'
was Off. Turn it Off (in the core) for text map if color is Off and
bgcolors hasn't been explicitly set. Conversely, Qt was leaving
color Off and then using color with abandon. Turn in On (in the core)
for tiled map if it hasn't been given an explicit value. Those two
changes should cope with most situations and still let the player
override.
end.c:177:16: warning: unused parameter 'why' [-Wunused-parameter]
177 | NH_abort(char *why)
| ~~~~~~^~~
end.c: At top level:
end.c:1191:1: warning: 'get_saved_pline' defined but not used [-Wunused-function]
1191 | get_saved_pline(int lineno){
| ^~~~~~~~~~~~~~~
options.c:1263:1: warning: 'optfn_crash_urlmax' defined but not used [-Wunused-function]
1263 | optfn_crash_urlmax(int optidx UNUSED, int req, boolean negated UNUSED, char *opts, char *op)
| ^~~~~~~~~~~~~~~~~~
options.c:1240:1: warning: 'optfn_crash_name' defined but not used [-Wunused-function]
1240 | optfn_crash_name(int optidx UNUSED, int req, boolean negated UNUSED, char *opts, char *op)
| ^~~~~~~~~~~~~~~~
options.c:1217:1: warning: 'optfn_crash_email' defined but not used [-Wunused-function]
1217 | optfn_crash_email(int optidx UNUSED, int req, boolean negated UNUSED, char *opts, char *op)
| ^~~~~~~~~~~~~~~~~
Add the 'dump' argument to the existing '--version' command-line
option to display the magic numbers used when validating save and
bones files for compatibility.
Nothing exciting, just a line of 5 hex values. I was going to also
list the values for however many save and bones files are specified
on the command line but it seems to need more effort than I care to
expend. And I hadn't made up my mind whether that should be done by
nethack, recover, or some new standalone program. [Single line of
relatively raw output is so that they could be compared more easily.]
nethack --version:bad-argument was writing a message to stdout and
then starting play--which immediately overwrites stdout. Have it
quit instead. Player wasn't trying to start a game and quitting is
what it does with --version:good-argument.
'uskin' isn't part of worn[] so wasn't being checked with the other
slot pointers. Add that, although it'll be excluded by default and
need to have EXTRA_SANITY_CHECKS defined to include it.
Check the various uarm, uwep, and so forth pointers to make sure that
they point to items in hero's inventory and that those items have the
corresponding W_ARM, W_WEP, &c bit set in their owornmask field.
Also check whether any other items in inventory have the same bit set.
[Some of this is already handled by sanity_check_worn() in mkobj.c.]
Also validate two-weapon combat mode. I don't recall ever seeing any
problems reported about it though.
Does not validate ball and chain. Those should have their own sanity
checks that validate a bunch of other stuff besides just worn slots.
They already get some checking by the normal object tests.
This works ok with 'sanity_check' set and items worn and wielded
normally. The only insane situation tested was by reverting the
confused-looting-with-quivered-gold fix from earlier today. I haven't
used a debugger to force other such problems so this isn't very
thoroughly tested.
Noticed while testing confused #loot: when using 'Q' to populate
quiver, or 'f' when quiver is empty, don't bother asking what to
ready/fire if inventory is empty.
And when inventory isn't empty, don't list '-' as a likely candidate
if quiver is already empty.
'w' behaves differently. '-' is treated as a likely candidate when
already not wielding anything, and even when inventory is completely
empty.
lava_effects() item destrunction had the logic for handling Book of
the Dead wrong. (However, that didn't matter since the obj_resists()
check earlier would prevent it from being burned up. Fix it anyway.)
If gold is moved into throne's coffer chest (or added to exchequer
monster's minvent) while quivered by the hero, it wasn't being unworn
to remove it from quiver slot. That could lead to a crash. Example
was segfault during 'f' command.
freeinv() expects caller to unwear item being removed from inventory;
reverse_loot() wasn't doing so.
If any part of a long worm is within a posion gas cloud region,
include it just once no matter how many segments are inside. The
tail will take harm from poison gas, but only once rather than for
repeated for every segment inside the region.
Unlike with detection, show long worm tail if hero is adjacent to
it in a gas cloud region and would see that tail segment if the
region wasn't inhibiting visibility.
Reported yesterday as issue #1207 by elunna and over four years ago
in #H9430: monsters in gas clouds that should be shown by Warning
aren't. And in some discussion of #H9430 back then: monsters
adjacent to the hero while in gas clouds aren't shown on the map,
but combat and other interaction describes them as if they were.
There have been changes since then--to prevent seeing things on the
far side of gas clouds as if there were no clouds in the way--but
the basic problems with warning and adjacency weren't addressed.
This is a band-aid (tm) that probably makes things livable. Don't
allow gas region display to override monsters that are sensed via
warning or when the hero is next to them. That part doesn't work
correctly if the hero isn't blind and is inside the cloud while the
monster is adjacent but outside. I think it will take more than a
band-aid to deal with that sensibly.
Closes#1207
Reported by elunna: a poison gas breath attack that was reflected
by the target still left that target enveloped in a poison gas cloud.
This makes the gas trail not extend to the target if the attack hits
and is reflected. But if the attack misses then the cloud does reach
the target, which seems weird to me. However, being in the cloud is
a separate event that isn't deterred by reflection.
Closes#1204
add CRASHREPORT for Windows
add ^P info to report (via DUMPLOG)
new options: crash_email, crash_name, crash_urlmax
new game command: #bugreport
new config option: CRASHREPORT_EXEC_NOSTDERR
new command line option: --bidshow
deleted helper scripts:
NetHackCrashReport.Javascript
nhcrashreport.lua
misc:
update CRASHREPORTURL (will need to be updated before release)
update bitrot in winchain
winchain for Windows
add missing synch_wait for NetHackW --showpaths
add PANICTRACE (and CRASHREPORT) in mdlib.c:build_opts
missing:
packaging (Windows needs the pdb file)
no testing with MSVC command line build
port status:
linux: working, but glibc's backtrace doesn't show static functions
Windows VS: working. pdb file is large - looking into options
MacOS: working
msdos: not supported
VMS: not supported
MSVC: planned, but not attempted
MSYS2: working, but libbacktrace not showing symbols (yet?)
