On Fri, Mar 2, 2012 at 00:13, Stephen LARROQUE <lrq3...@gmail.com> wrote:
> Hello,
>
> I am currently trying to make a server-side demos patch for OpenArena which
> should be completely compatible with standard ioquake3.
>
> My goal is almost achieved, but I face one last problem: the health is not
> updated in the HUD when spectating a democlient. Every other stat is (eg:
> ammos, armor, etc.), except health.
>
> I could track down the problem, and it seems that even if there is a
> playerState_t->stats[STAT_HEALTH] field, contrary to the others such as
> STAT_ARMOR, this one is not directly used, and most of the time it's
> gentity_t->health that is taken in account for damage processing and health
> drawing.
>
> I know I can edit the gamecode, but I would like the patch to be fully
> managed server-side to ensure a full compatibility with mods.
>
> My question is: do you guys know of a way to access, and set, the health
> field from gentity_t from the engine?
>
> I tried to cast a sharedEntity_t into a gentity_t, but without much result,
> the values are completely off.
>
> Thank you for reading me,
> Stephen L.
How and where do you cast it? It should (could!) work provided that
you take the field offset into account. Your code should look
something like this:
#define offset_of(type, member) \
((intptr_t) ((char *) &(((type *) 8)->member) - 8))
#define container_of(ptr, type, member) \
((type *) ((char *) (ptr) - offset_of(type, member)))
gentity_t *as_gent(entityShared_t *shared_ent) {
return container_of(shared_ent, entityShared_t, r);
}
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