There was a transcription error in the comments in cstd.h for
the standard list of header files, where only the description
remained for <stdlib.h>, not the name of the file itself.
Remove several extraneous inclusions of the standard C99 headers.
Tested on the following afterwards:
Linux (using hints/linux.370) including tty, curses, qt6, and X11
macOS (using hints/macOS.370) including tty, curses, qt5, and X11
Windows MSYS2 using sys/windows/GNUmakefile
Windows Visual Studio using sys/windows/Makefile.nmake
msdos cross-compile on Ubuntu using djgpp cross-compiler
ENHANCED_SYMBOLS is defined by default in config.h.
The msdos build tried to #undef ENHANCED_SYMBOLS
in tilemap.c, but doing it in there created a mismatch
between the data struct definition for glyph_map in wintype.h
and the initializers generated in tilemap.c
Move the msdos build catch for ENHANCED_SYMBOLS to
one single place in config1.h so that the code and data agree.
Sidenote: The main window size calculations are getting stupid.
It would be better to find out the widget sizes and shift
the splitter up, instead of letting it just take up half of the main window.
Idea and part of the code by Richard Henschel
GNU make looks first for a file called GNUmakefile, ahead of
looking for Makefile and then makefile.
Renaming sys/windows/Makefile.mingw32 to sys/windows/GNUmakefile
allows:
o src/GNUmakefile (for use by GNU make) and src/Makefile (for use
Microsoft nmake) to both reside in the src folder during build.
o src/GNUmakefile will be used by GNU make, without having to
explicitly specify "-f GNUmakefile" on the GNU make command line.
o src/Makefile will be used by Microsoft nmake, without having to
explicitly specify "-f Makefile" on the Microsoft nmake command line.
For the gcc build, the movemement of sys/windows/GNUmakefile needs
to be copied to src/GNUmakefile as part of the build process (see
sys/windows/build-msys2.txt).
For the Microsoft Visual Studio command line build with nmake,
sys/windows/Makefile.nmake needs to be copied to src/Makefile as
part of the build process (see sys/windows/build-nmake.txt).
They are both copied to the src folder from their respective
repository source file names when the nhsetup.bat file is used.
gcc has recognized various "magic comments" for white-listing
occurrences of implicit fallthrough in switch statements for
a long time:
The range and shape of "falls through" comments accepted are
contingent upon the level of the warning. (The default level is =3.)
-Wimplicit-fallthrough=0 disables the warning altogether.
-Wimplicit-fallthrough=1 treats any kind of comment as a "falls through" comment.
-Wimplicit-fallthrough=2 essentially accepts any comment that contains something
that matches (case insensitively) "falls?[ \t-]*thr(ough|u)" regular expression.
-Wimplicit-fallthrough=3 case sensitively matches a wide range of regular
expressions, listed in the GCC manual. E.g., all of these are accepted:
/* Falls through. */
/* fall-thru */
/* Else falls through. */
/* FALLTHRU */
/* ... falls through ... */
etc.
-Wimplicit-fallthrough=4 also, case sensitively matches a range of regular
expressions but is much more strict than level =3.
-Wimplicit-fallthrough=5 doesn't recognize any comments.
Plenty of other compilers did not recognize the gcc comment convention,
and up until now the compiler warning for detecting unintended
fallthrough had to be suppressed on other compilers. That's because the code
in NetHack has been relying on the gcc approach, and only the gcc approach.
The C23 standard introduces an attribute [[fallthrough]] for the
functionality, when implicit fallthrough warnings have been enabled.
Several popular compilers already support that, or a very similar attribute
style approach, today, even ahead of their C23 support:
C compiler whitelist approach
--------------------------- -------------------------------------
C23 conforming compilers [[fallthrough]]
clang versions supporting
standards prior to
C23 __attribute__((__fallthrough__))
Microsoft Visual Studio
since VS 2022 17.4.
The warning C5262 controls
whether the implict
fallthrough is detected and
warned about with
/std:clatest. [[fallthrough]]
This adds support to NetHack for the attribute approach by inserting a
macro FALLTHROUGH to the existing cases that require white-listing, so
other compilers can analyze things too.
The definition of the FALLTHROUGH macro is controlled in include/tradstdc.h.
The gcc comment approach has also been left in place at this time.
If the saved game menu has more than 13 games, it won't be able to
use 'n' for "new game" and 'q' for "quit". Switch to 'N' and 'Q'
instead of just using the next letters in sequence. Only resort to
next-letters if there are more than 39 games.
tty and curses handle a list of many save files via menu pagination.
X11 does so with one long page possessing a scroll bar. If there
are more than 52 entries, selection via mouse is needed beyond 'Z'.
Qt has one page without any scroll bar so won't provide access to
the full set of save files when there are too many to fit on the
screen.
On the Windows GUI (nethackw.exe), while running the fuzzer,
if the NetHack window gets minimized, or someone minimizes all
desktop windows, the NetHack window stops responding and won't
even repaint itself. The NetHack process continues to use the
CPU.
A break in the debugger shows that it is caught in a do loop.
I didn't delve into the issue of why minimizing the window
triggers a condition that leads to the endless loop. This
just adds a kludge to exit the loop while fuzzing.
timeout.c:550:1: warning: no previous prototype for ‘region_dialogue’ [-Wmissing-prototypes]
550 | region_dialogue(void)
| ^~~~~~~~~~~~~~~
../win/curses/curswins.c: In function ‘curses_destroy_win’:
../win/curses/curswins.c:202:33: warning: variable ‘dummyht’ set but not used [-Wunused-but-set-variable]
202 | int mapwidth = 0, winwidth, dummyht;
| ^~~~~~~
Issue reported by g-branden-robinson: vertical status panel ended
up with an extra closing paren on the energy line, and sometimes
popups left some text and/or border to the right of the map.
I haven't been able to reproduce the energy anomaly. It is possible
that it is dependent on the version of curses.
This fixes the leftover popup traces that the base window catches
(and hangs onto) when there is extra space to the right of the map.
Erasing a popup prior to deleting it suffices to make base window
forget it.
I have a more elaborate fix that covers the space to the right of
the map, when there is some, with an extra window and erases that
window when refreshing the map. It works but adds a bunch of code
that we can get by without.
Issue #1285 is still open.
First noticed this when watching someone livestream, and managed
to figure it out from there: The window that pops up when looking
at a pile of objects under you by pressing ':' is marked as a menu,
but has no selectable options. Curses still allowed you to use the
menu-search command (':') on it.
Prevent the menu search command in windows with no selectable entries.
Reported by ars3niy, the curses interface could behave strangely on
the first turn if the 'pauper' option/conduct was specified.
There isn't any definitive flag indicating whether or not the game
has started. Since 'moves' has traditionally been initialized to 1
rather than to 0, there were several instances of
| if (moves <= 1 && invent != NULL)
being used to determine the starting state on the assumption that
once hero has inventory, the game has begun. Introduction of the
'pauper' option made the test for non-Null invent become unreliable.
For paupers, the program would behave as if the game hadn't started
yet until the player finally made a time-consuming move.
This changes compile-time initialization of 'moves' from 1 to 0,
then sets it to 1 when initial inventory would be bestowed (even
when 'pauper' inhibits that). That's probably not the best place
for it, but testing for 'moves==0' now should produce an identical
effect as 'moves<=1 && invent!=NULL' used to accomplish.
It would have been much simpler just to give paupers 1 gold piece,
or perhaps one rock, in place of usual starting gear so that their
initial inventory wouldn't be empty, but the moves+invent way of
checking for start-of-play has always bothered me.
Should 'pauper' be preventing 'nethack -X' from giving its starting
wand of wishing? Conducts and explore mode don't really overlap so
maybe it doesn't matter.
Fixes#1275
The g? structs had a mix of variables that were written to
the savefile, and those that were not.
For better clarity and to distinguish those that end up in
the savefile, relocate some g? variables that get written
directly to the savefile into different structs.
This updates EDITLEVEL, although technically it probably
didn't need to, since savefile contents are not changing.
Details:
gb.bases -> svb.bases
gb.bbubbles -> svb.bbubbles
gb.branches -> svb.branches
gc.context -> svc.context
gd.disco -> svd.disco
gd.dndest -> svd.dndest
gd.doors -> svd.doors
gd.doors_alloc -> svd.doors_alloc
gd.dungeon_topology -> svd.dungeon_topology
gd.dungeons -> svd.dungeons
ge.exclusion_zones -> sve.exclusion_zones
gh.hackpid -> svh.hackpid
gi.inv_pos -> svi.inv_pos
gk.killer -> svk.killer
gl.lastseentyp -> svl.lastseentyp
gl.level -> svl.level
gl.level_info -> svl.level_info
gm.mapseenchn -> svm.mapseenchn
gm.moves -> svm.moves
gm.mvitals -> svm.mvitals
gn.n_dgns -> svn.n_dgns
gn.n_regions -> svn.n_regions
gn.nroom -> svn.nroom
go.oracle_cnt -> svo.oracle_cnt
gp.pl_character -> svp.pl_character
gp.pl_fruit -> svp.pl_fruit
gp.plname -> svp.plname
gp.program_state -> svp.program_state
gq.quest_status -> svq.quest_status
gr.rooms -> svr.rooms
gs.sp_levchn -> svs.sp_levchn
gs.spl_book -> svs.spl_book
gt.timer_id -> svt.timer_id
gt.tune -> svt.tune
gu.updest -> svu.updest
gx.xmax -> svx.xmax
gx.xmin -> svx.xmin
gy.ymax -> svy.ymax
gy.ymin -> svy.ymin
Related note:
There are some pointer variables that are heads of chains that were not
moved from 'g?' to 'sv?', because they are not actually written to the
savefile directly, but the objects/monst/trap/lightsource/timer in the
chains they point to are. That can be changed, if desired.
Examples: gi.invent, gm.migrating_objs, gb.billobjs, gm.migrating_mons,
gf.ftrap, gl.light_base, gt.timer_base
curletter is screened to be in valid range in all
other switch/case branches except in the default case,
which is fallthrough.
Add check for valid range in here also, otherwise
array might be addressed with invalid offset.
This should fix the following, found
with UBSAN and #debugfuzzer:
../win/curses/cursdial.c:1558:49: runtime error: index -154 out of bounds for type 'char [256]'
0x5f3857eff140 in menu_get_selections ../win/curses/cursdial.c:1558
0x5f3857ef78c8 in curses_display_nhmenu ../win/curses/cursdial.c:801
0x5f3857edd390 in curses_select_menu ../win/curses/cursmain.c:768
Pull request from mkuoppal: avoid integer overflow when user types
digits and they're combined into a number by successively multiplying
intermediate value by 10 and adding new digit. Needed to avoid
triggering undefined behavior if the value overflows the largest
signed integer (actually long int).
This is a much more general fix than the code in the pull request,
which imposed an arbitrary limit for one aspect of tty input.
I'm not convinced that integer.h was the right place to add the new
AppendLongDigit() macro. I may not have caught all the places where
it is needed. files.c accumulates a value from digits but uses
unsigned int, so overflow won't trigger undefined behavior (although
it presumably ends up with a different value than what was intended).
options.c and coloratt.c accumulate smaller integers and have a limit
on the number of digits they'll use, so can't overflow.
Fixes#1254
Honor the objection to an earlier change to tty_curs(), despite the
fact that it seems delusional. Four integer comparisons per cursor
positioning call affect the throughput of cmov(), but only if the
program is built without DEBUG defined?
More analyzer induced hackery. If tty_curs() discovers that the x,y
passed to it are no good, don't use them, even if that results in
the next output being in the wrong place.
The old issue of behaving differently when built with DEBUG defined
versus when it is not defined is fixed in a different way.
For curses, behave like tty by keeping a count of messages issued via
raw_print, then if that is non-zero issue a prompt and require the
player to acknowledge them before it erases the screen. Mainly so
that complaints during RC file processing will be seen.
For tty, force getret() to be an unconditional routine instead of
sometimes a routine, sometimes a macro which calls another routine.
Issue reported by Shrigis1: the tile for Ixoth depicts a demon that
resembles Nalzok but it ought to be a red dragon.
The issue entry included a binary tile attachment. Rather than try
to deal with that, I've cloned red dragon and included the old tile's
eyes. The issue describes them as green but they look gray to me.
(Ordinary red dragon has white eyes.)
3.4.3 had same issue. I don't remember whether Ixoth was originally
a demon but his tile seems to have always shown one.
Fixes#1239
It was too early to call the windowport change_color() routine
while processing the config file. The windowport was not yet
fully operational.
Now the palette option processing will just place the rgb
value into the appropriate ga.altpalette[CLR_MAX] entry.
init_sound_disp_gamewindows(void) [allmain.c] calls
change_palette() [coloratt.c] and it will call the windowport
change_color() function for each ga.altpalette[] entry that
has been set.
Notes:
The rgb values stored in ga.altpalette[] have the NH_ALTPALETTE bit set
so that the rgb value of 0 can be stored and be distinguishable from
a "not set" entry.
The NH_ALTPALETTE bit is cleared from the rgb value in change_palette()
prior to calling the windowport change_color() function.
The syntax for palette is colorname/r-g-b.
For example: palette:black/12-12-12
colorname must be one of the NH_BASIC_COLOR names or a suitable
alias for one of those 16 entries.
Some of the windowport CHANGE_COLOR functions had the wrong parameters,
perhaps due to bitrot. Those have been corrected to match the prototype.
For tty, make hitpointbar blink if current HP falls to the critical
HP threshold. Doesn't require status highlighting. Not changed:
when status highlighting is active, use the HP color but force the
attribute to be inverse (plus blink if the criterium is met) rather
than whatever the HP highlight specifies.
For curses, do the same thing. It used to honor HP attribute for
hitpointbar, now it behaves the same as tty: always inverse, maybe
combined with blink. The new code assumes that inverse and color
can be turned off without turning off active blink in the process.
I had intended to make hitpointbar be a full-fledged status field
(which happens to be rendered on top of title) so that it could be
highlighted differently from hit points (mainly so that one could
highlight up and down changes while the other showed percentages).
This is less versatile than that but much simpler.
The curses colorpair rework I did changed the pile hilite background
color from blue to red. Change it back to blue, and use a function
to get the color pair instead of hardcoding the value.
