Ah I see, but the problem here is not to find the gentity_t base adress (it's already stored in memory in sv.gentities by SV_LocateGameData()), but to find the adress of the health field, and the problem is that because there are a lot of fields between r and health, and of many different types, it's just impossible to make a locating function without knowing the exact structure of gentity. Because in fact my biggest problem at first was that I couldn't find a way to get the declaration of the gentity_t type without having includes error.
Anyway, I would love to be able to access the health field without having to rely on the gentity_t type, so if you have an idea how to get the health field without using a gentity_t anywhere, it would be great, because it would then avoid the weird includes I did to make the code work properly. Cordially, Stephen Larroque Le 10 mars 2012 23:31, Ben Noordhuis <i...@bnoordhuis.nl> a écrit : > On Sat, Mar 10, 2012 at 19:07, Stephen LARROQUE <lrq3...@gmail.com> wrote: > > Hello Ben, > > > > Thank you very much for your code, I wish I could write so much > complicated > > defines by myself ;) > > > > Unfortunately your code does not work right away, first because as_gent > > takes entityShared_t as argument instead of sharedEntity_t, and secondly > > your function only returns the r member, which is in fact an > entityShared_t, > > but this is not what I'm looking for. > > Yes, sorry. There's a typo in the example, it should have read: > > return container_of(shared_ent, gentity_t, r); > > IOW, take the field offset of `r` and subtract it from the > `shared_ent` pointer to get the address of the enclosing `gentity_t` > struct. > _______________________________________________ > ioquake3 mailing list > ioquake3@lists.ioquake.org > http://lists.ioquake.org/listinfo.cgi/ioquake3-ioquake.org > By sending this message I agree to love ioquake3 and libsdl. >
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