The consolidation of global variables from scattered source
files into decl.c and declared in decl.h was begun in 3.7.0.
Their placement in common files was done for centralized
initialization and potential re-initialization during a
"play again" scenario.
It wasn't really necessary for all of them to be housed in a
single huge structure to meet the "play again" requirement,
and the single huge structure has been a little unwieldy when
it comes to maintenance.
Following this commit, instead of one single extremely large structure
named 'g' to house all of the relocated global variables, they
are distributed into several ga through gz.
To make things easy for the developer, each variable is placed
into the struct corresponding to the starting letter of the variable.
That way, no lookup is required in order to know which struct houses
a particular variable, it is a simple match to the starting letter
for all the centralized global variables.
A global variable named 'amulets', would be found in ga.
ga.amulets
^ ^
A global varable named 'move', would be found in gm.
gm.moves
^ ^
A global variable named 'val_for_n_or_more' would be found in gv.
gv.val_for_n_or_more
^ ^
A global variable named 'youmonst' would be found in gy.
gy.youmonst
^ ^
cansee(), couldsee(), and templit() are macros which are described
as boolean and used as if boolean, but they've been using bit
masking to return integer values greater than 1. That works since
C treats any non-zero as True but doesn't match boolean intent.
On 59818fb, MAX_RADIUS was changed from 15 to 16 to intend to support
"radius 0". But MAX_RADIUS doesn't means the range but outer bound of
the radius table, so it should not be changed, and this change led
possible out-of-bound access on view_from() and do_clear_area() in
vision.c.
This commit reverts the change and avoids the problem.
Implement the suggested feature that a camera's flash actually update
hero's memory of the map as it traverses across the level. Turned
out to be more work than anticipated despite having the code for a
thrown or kicked lit candle or lamp to build upon.
Among other things it needed to update the circle code to handle
previously unused radius 0 to operate on the center point only. I've
never touched that before and hope this hasn't introduced any bugs.
Also removes several instances of vision code operating on column #0.
(At least one is still present.)
Throwing or kicking a lit lamp, lit candle, or lit potion of oil
wasn't giving off any light as it travelled to its destination.
Now it does, and dungeon features, objects, or monsters that are
temporarily seen as it moves from square to square till appear on
the map. In the monster case, they go away as soon as the light
moves beyond range, but when it finishes moving the "remembered,
unseen monster" glyph will be drawn at their location. I think that
part has some room for improvement, but mapping temporarily seen
terrain features is the primary impetus for this change.
Also, any message delivery while the "lit missile" travelled still
showed its light around the hero. Noticeable for lamps or stacks
of sufficient candles if hero has no other light source.
This cannibalizes the monst->mburied bit for temporarily seeing a
monster. It has been present but unused for ages. I needed to
replace a couple of vision macros to make sure they didn't examine
it any more so that overloading for transient lighting doesn't
introduce any vision oddities. For version $NEXT, monst->mtemplit
can be given its own bit. It is only set during bhit() execution
and cleared by the time that returns, so has no effect on save files.
I did my best to exempt some of the bigger aligned blocks from the reformatting
using the /* clang-format off */ and /* clang-format on */ tags. Probably some
that shouldn't have been formatted were anyway; if you encounter them, please
fix.
The clang-format tags were left in on the basis that it's much easier to prune
those out later than to put them back in, and it means that, modulo my custom
version of clang-format, I should be able to run clang-format on the source tree
again without changing anything, now that Pat has fixed the VA_DECL issues.
