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Fix: bad cast making sp_lev chameleon light source

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Giving new_light_source '(genericptr_t) mtmp' leads to the light
source's id.a_monst being set to 'mtmp->nmon' rather than 'mtmp',
since that's what is stored in the initial byte of the monst struct.
When mtmp->nmon == 0x0 this can cause a segfault in do_light_sources.
This commit is contained in:
Michael Meyer
2021-10-28 17:48:37 -04:00
parent d736cbd751
commit 9e94226235
1 changed files with 2 additions and 2 deletions
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4
src/sp_lev.c
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@@ -2016,11 +2016,11 @@ create_monster(monster* m, struct mkroom* croom)
/* used to give light, now doesn't, or vice versa,
or light's range has changed */
if (emits_light(olddata))
del_light_source(LS_MONSTER, (genericptr_t) mtmp);
del_light_source(LS_MONSTER, monst_to_any(mtmp));
if (emits_light(mtmp->data))
new_light_source(mtmp->mx, mtmp->my,
emits_light(mtmp->data),
LS_MONSTER, (genericptr_t) mtmp);
LS_MONSTER, monst_to_any(mtmp));
}
if (!mtmp->perminvis || pm_invisible(olddata))
mtmp->perminvis = pm_invisible(mdat);