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make a distinction between rock and unexplored area

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This adds a pair of new glyphs: GLYPH_UNEXPLORED and GLYPH_NOTHING

GLYPH_UNEXPLORED is meant to be the glyph for areas of the map that
haven't been explored yet.

GLYPH_NOTHING is a glyph that represents that which cannot be seen,
for instance the dark part of a room when the dark_room option is
not set.  Since the symbol for stone can now be overridden to
a players choice, it no longer made sense using S_stone for the
dark areas of the room with dark_room off. This allows the same
intended result even if S_stone symbol is mapped to something visible.

GLYPH_UNEXPLORED is what areas of the map get initialized to now
instead of STONE.

This adds a pair of new symbols: S_unexplored and S_nothing.

S_nothing is meant to be left as an unseen character (space) in
order to achieve the intended effect on the display.

S_unexplored is the symbol that is mapped to GLYPH_UNEXPLORED, and
is a distinct symbol from S_stone, even if they are set to the same
character. They don't have to be set to the same character.

Hopefully there are minimal bugs, but it is a deviation from a
fairly long-standing approach so there could be some unintended
glitches that will need repair.
This commit is contained in:
nhmall
2020-02-08 00:48:03 -05:00
parent 84daf75981
commit d37fa196b2
19 changed files with 248 additions and 126 deletions
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4
doc/Guidebook.tex
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@@ -5222,8 +5222,7 @@ Default & Symbol Name & Description\\
\verb+@+ & S\verb+_+ss3 & (magic shield 3 of 4)\\
\verb@*@ & S\verb+_+ss4 & (magic shield 4 of 4)\\
\verb@^@ & S\verb+_+statue\verb+_+trap & (statue trap)\\
\verb@ @ & S\verb+_+stone & (solid rock or unexplored terrain\\
& & \,or dark part of a room)\\
\verb@ @ & S\verb+_+stone & (solid rock)\\
\verb@]@ & S\verb+_+strange\verb+_+obj & (strange object)\\
\verb@-@ & S\verb+_+sw\verb+_+bc & (swallow bottom center)\\
\verb@\@ & S\verb+_+sw\verb+_+bl & (swallow bottom left)\\
@@ -5247,6 +5246,7 @@ Default & Symbol Name & Description\\
\verb@|@ & S\verb+_+trwall & (wall)\\
\verb@-@ & S\verb+_+tuwall & (wall)\\
\verb@U@ & S\verb+_+umber & (umber hulk)\\
\verb@ @ & S\verb+_+unexplored & (unexplored terrain)\\
\verb@u@ & S\verb+_+unicorn & (unicorn or horse)\\
\verb@<@ & S\verb+_+upladder & (ladder up)\\
\verb@<@ & S\verb+_+upstair & (staircase up)\\