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Fix vision in some cases with boulder falling into pool

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We can't just unconditionally unblock vision for a location when a boulder
falls into a pool, because the location may also have a (poison) cloud on it.
This commit is contained in:
Pasi Kallinen
2025-01-06 19:46:35 +02:00
parent d807436c10
commit 4392f5fa4e
3 changed files with 13 additions and 2 deletions
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1
include/extern.h
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@@ -3508,6 +3508,7 @@ extern void vision_reset(void);
extern void vision_recalc(int);
extern void block_point(int, int);
extern void unblock_point(int, int);
extern void recalc_block_point(coordxy, coordxy);
extern boolean clear_path(int, int, int, int);
extern void do_clear_area(coordxy, coordxy, int,
void(*)(coordxy, coordxy, void *), genericptr_t);

2
src/do.c
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@@ -74,8 +74,8 @@ boulder_hits_pool(
levl[rx][ry].drawbridgemask &= ~DB_UNDER; /* clear lava */
levl[rx][ry].drawbridgemask |= DB_FLOOR;
} else {
unblock_point(rx, ry);
levl[rx][ry].typ = ROOM, levl[rx][ry].flags = 0;
recalc_block_point(rx, ry);
}
/* 3.7: normally DEADMONSTER() is used when traversing the fmon
list--dead monsters usually aren't still at specific map

12
src/vision.c
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@@ -887,7 +887,17 @@ unblock_point(int x, int y)
gv.vision_full_recalc = 1;
}
/*==========================================================================*\
/* recalc if point should be blocked or unblocked */
void
recalc_block_point(coordxy x, coordxy y)
{
if (does_block(x, y, &levl[x][y]))
block_point(x, y);
else
unblock_point(x, y);
}
/*==========================================================================* \
: :
: Everything below this line uses (y,x) instead of (x,y) --- the :
: algorithms are faster if they are less recursive and can scan :