This adds a superset of the code from github pull request #328
to create a short-lived cloud of steam when fire hits a pool or
fountain. The original code required C99; this doesn't. It also
allowed vapor clouds on the Plane of Water where they don't work
sanely becaure regions don't understand air bubble movement and/or
vice versa. This inhibits the clouds there [the same ought to be
done for scrolls of stinking cloud]. It also left as-is the code
that reported when fountains got used up even though conceptually
the steam should interfere with being able to see that. This adds
a glyph-check hack to augment cansee() so that fountains that boil
away entirely are hidden at the time.
Regions that block line of slight should be calling block_point()
when created and unblock_point() when removed but a naive attempt
to introduce that didn't work as expected so I'm giving up on.
Fixes#328
Make wearing a wet towel confer new attribute Half_gas_damage in
addition to the usual blindness. It reduces damage from being inside
a gas cloud region and from being hit by poison gas breath attack.
It also fully blocks breathing of potion vapors.
Might make the Plane of Fire easier although overcoming its blindness
with telepathy won't reveal elementals. Definitely has the potential
to make blind-from-birth conduct easier which wasn't the intent and
probably isn't significant.
remove_region() calls newsym() when removing gas clouds, but when
newsym() checked whether it was updating a gas cloud location it
always got a false 'yes' because the region hadn't been removed yet.
Fixing this didn't seem to make any observable difference so it must
be followed fairly rapidly by a full vision recalc.
Region processing does a lot of looping--when there are actually
regions present--and calls functions in those loops which do more
looping of their own. This moves some of the simpler tests so that
they get done sooner and can avoid some of those function calls.
I was hoping that it would speed up the turn cycle on the Plane of
Fire where the spontaneous irregularly shaped fumaroles are composed
of a lot of small regions but I don't think there's any noticeable
difference.
In process of doing that, I discovered a bug (no doubt copy+paste
which escaped an intended update) with monster handling. The check
for whether a monster is entering a region depends upon whether the
hero is in that same region rather than whether the monster is
already inside. So a monster can enter a region--or have a moving
one enclose it--with impunity if the hero is already in that region.
Once the hero moves out of it, the monster will finally enter it.
Make some progress on a couple of next minor release checklist
items, hopefully without introducing too many new bugs. This
is just the initial commit, and work continues.
Checklist items:
Savefiles compatible between Windows versions, whether 64-bit
or 32-bit in little-endian field format.
Selection of file formats:
historical (structlevel saves),
lendian (little-endian, fieldlevel saves),
and just for proof-of-concept, ascii fieldlevel saves
(the ascii is huge! 10x bigger than little-endian).
For the fieldlevel save, all complex data structures recursively
get broken down until until it is one of the simple types that
can't be broken down any further, and that gets when it gets
written to the output file.
New files needed for this build:
hand-coded:
include/sfprocs.h
src/sfbase.c - really a dispatcher to one of the
output/input format routines.
src/sflendian.c - little-endian output writer/reader.
src/sfascii.c - ascii text output writer/reader.
auto-coded (generated):
include/sfproto.h
src/sfdata.c
This is just one approach. I'm sure there are countless others
and they have different pros and cons.
For producing the auto-coded files a utility called
universal-ctags, that is actively maintained and evolving,
was used to do all the heavy-lifting of parsing the
NetHack C sources to tabulate the data fields, and store
them in an intermediate file called util/nethack.tags
(not required for building NetHack if you already have a
generated include/sfproto.h and src/sfdata.c)
util/readtags (also not required for building NetHack
itself) will decipher the nethack.tags file and produce
the functions that can deal with the NetHack struct data
fields.
You can obtain the source for universal-ctags by cloning it
from here:
https://github.com/universal-ctags/ctags.git
The combination universal-ctags + util/readtags has been
tried and tested under both Windows and Linux, so it is
not tied to a particular platform.
Note: util/readtags will work only with universal-ctags
output, so other ctags are unlikely to work as-is.
Universal-ctags can be build from source very easily
under Linux, or under Windows using visual studio.
Stinking cloud placed near water or poison gas breathed across it
would affect and potentially kill underwater monsters. Most swimmers
are on the surface and should be affected, but eels and other fish
shouldn't be.
This also changes minliquid() to not treat flying and levitating as
ways to survive water when on the Plane of Water.
I think goodpos() needs to be taught about that Plane (where many ways
of existing at a water location don't apply). This doesn't do that.
> Green dragons should probably not cough in their own breath.
They took no damage, but they did become blind. Make creatures who
breath poison gas (adult green dragons, the Chromatic Dragon) be
immune to gas clouds like non-breathing creatures are.
There's no way to distinguish gas left behind by dragon breath from
that created by scroll of stinking cloud, so gas breathers are no
longer affected by the latter.
setmangry() and wakeup() were being used for multiple purposes. Add an
extra parameter to track which. This fixes several minor bugs (e.g.
whether monsters with no eyes were angered by (useless) gaze attacks
against them previously depended on the state of a UI option, and
the Minetown guards would be annoyed if you used a cursed scroll of
tame monster on a shopkeeper). It's also a prerequisite for the
Elbereth changes I'm working on.
Extend #stats beyond just monsters and objects. Have it display
memory usage for traps, engravings, light sources, timers, pending
shop wall/floor repair, regions, bones tracking, named object types,
and dungeon overview.
No doubt there are other memory consumers that I've overlooked.
I'll push a formatting guide at some point. There may still be
outstanding changes, but please feel free to resolve those as you arrive
a them.
To the best of my knowledge, there is no changes to the actual code
content, but the formatter does have the occasional bug. If you run into
an issue, please fix it!
When a gas cloud that deals damage is created, it uses
a poison cloud glyph instead of the cloud glyph.
(A bright green '#', or a bright-green recolor of the
cloud tile)
The plane of fire has random "stinking clouds", or
fumaroles, centered on lava pools.
Also make poison cloud glyph override lava, pool and
moat glyphs.
From a bug report, stinking cloud
harms hero even when u.uninvulnerable is set during successful prayer.
This makes the cloud harmless during prayer as he suggested.
It also makes being inside a stinking cloud become a major trouble
that prayer can fix. (With magical breathing such a cloud is harmless and
with poison resistance it is just a nuisance; it won't be considered to be
trouble in such cases.) The fix is to clear away the cloud, or to teleport
the hero if he's inside multiple overlapping clouds or in one that is
marked as permanent (which I think isn't currently possible).
Fix a couple of signed vs unsigned and unused paramater warnings
that pointed to actual bugs. uid values were being handled as int, even
though "modern" systems use type uid_t which could be bigger and is almost
certainly unsigned. There haven't been any reports of nethack falsely
claiming that the wrong user is trying to restore, so in practice this
hasn't mattered, but switch from int to unsigned long to make the chance
of problems be even smaller.
The code to save message history was ignoring the 'mode' argument so
would have attepted to write even when asked to free memory instead. It
isn't currently called by freedynamicdata() so the problem was theoretical
rather than real.
The 'UNUSED' macro is inadequate to handle parameters which are used
by some conditional configurations and unused by others, so there are
still several warnings about unused parameters from save.c and restore.c.
Pat noted that I neglected to drop the SCCS lines on the files I've been
committing, so clean up those and any others I could find where the SCCS
line date is out of date.
stinking clouds extend their timers, causing the "ttl == 0" check in
visible_region_at to be inappropriate; technically it was never quite
right, since the ttl is set to 0 one turn before removal is considered. But
with the Eyes on, this caused a visible change in the region although the
region still existed. Introduced a new -2L value to designate that the
region is being removed (-1L means it's permanent), which is what
visible_region_at was really trying to test.
Remove some more code that forced pointers into a long int, and
vice versa where information could be lost (P64 platforms such as
WIN64 have a 64 bit pointer size, but a 32 bit long size.)
This 3rd part deals with region functions switching
some arguments from type genericptr_t to 'anything'.
Like the previous 2 parts, this needs to increment
EDITLEVEL in patchlevel.h.
<Someone> wrote on Tuesday, July 27, 2004 at 06:46:15
> In the region.c function rest_regions allocates storage for the possible
> enter_msg and leave_msg strings. But the function free_region does not relese
> this storage.
Also ensures that some code that is currently ifdef'd out
makes copies of the strings into memory from alloc()
to ensure that no problems with free() result if the function
gets passed a literal string.
<Someone> wrote on Tuesday, July 27, 2004 at 06:46:15
> In the region.c function rest_regions allocates storage for the possible
> enter_msg and leave_msg strings. But the function free_region does not relese
> this storage.
Also ensures that some code that is currently ifdef'd out
makes copies of the strings into memory from alloc()
to ensure that no problems with free() result if the function
gets passed a literal string.
