GetDataTableProxyFn?

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quartata
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GetDataTableProxyFn?

Postby quartata » Tue May 22, 2018 5:58 pm

I was trying to get the proxy function for a datatable (tf_gamerules_data in this case):

Syntax: Select all

gamerules_proxy = entities.entity.BaseEntity.find("tf_gamerules")
gamerules = None

for prop in gamerules_proxy.server_class.table:
if prop.name == "tf_gamerules_data":
gamerules = prop.proxy_function(None, None, None, None, 0)
break


However, I was greeted with this:

Code: Select all

TypeError: tf_gamerules_data is a DataTable.


I dug through the code and found it came from here: https://github.com/Source-Python-Dev-Te ... s.cpp#L139, which just calls GetProxyFn directly (so the assertion did the right thing, that wouldn’t have worked). What I could not find was a wrapper for GetDataTableProxyFn, which is what I need. Is there one?

Thanks.
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Ayuto
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Re: GetDataTableProxyFn?

Postby Ayuto » Tue May 22, 2018 7:41 pm

The next version will contain GetDataTableProxyFn:
https://github.com/Source-Python-Dev-Te ... e50ab23a1d
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quartata
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Re: GetDataTableProxyFn?

Postby quartata » Tue May 22, 2018 7:57 pm

Oh that was quick. Thanks!
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quartata
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Re: GetDataTableProxyFn?

Postby quartata » Tue May 22, 2018 9:24 pm

I don't think this quite works yet:

Code: Select all

TypeError: No to_python (by-value) converter found for C++ type: boost::function<void* (SendProp const*, void const*, void const*, CSendProxyRecipients*, int)>


I thought at first this was because I invoked it wrong, but it happens when accessing data_table_proxy_function.
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Ayuto
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Re: GetDataTableProxyFn?

Postby Ayuto » Tue May 22, 2018 10:00 pm

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quartata
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Re: GetDataTableProxyFn?

Postby quartata » Wed May 23, 2018 12:36 am

Heh, build failed with a template error. Fun stuff :P

Code: Select all

error C2027: use of undefined type 'boost::python::detail::specify_a_return_value_policy_to_wrap_functions_returning<T>'
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Ayuto
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Re: GetDataTableProxyFn?

Postby Ayuto » Wed May 23, 2018 5:48 am

Sorry, now it's working:
https://github.com/Source-Python-Dev-Te ... 89460d4eaa

Syntax: Select all

from entities.entity import BaseEntity

gamerules_proxy = BaseEntity.find("cs_gamerules")
gamerules = None

for prop in gamerules_proxy.server_class.table:
if prop.name == "cs_gamerules_data":
gamerules = prop.data_table_proxy_function(None, None, None, None, 0)
break

gamerules.type_info.dump()

Code: Select all

CCSGameRules
-CTeamplayRules
--CMultiplayRules
---CGameRules
----CAutoGameSystemPerFrame
-----CBaseGameSystemPerFrame
------IGameSystemPerFrame
-------IGameSystem
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quartata
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Re: GetDataTableProxyFn?

Postby quartata » Wed May 23, 2018 1:34 pm

Awesome, thanks! (Incidentally it's cool to see that you can get the real g_pGameRules from the proxy like that in CS too. So much easier than scanning for CreateGameRulesObject and getting the pointer from there like I've seen people doing)
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Ayuto
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Re: GetDataTableProxyFn?

Postby Ayuto » Wed May 23, 2018 6:19 pm

Thank you too! I didn't know about that way before. :smile:
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quartata
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Re: GetDataTableProxyFn?

Postby quartata » Thu May 24, 2018 2:49 am

I can't really take credit for it, I found it in a very old AlliedModders thread and wanted to try it: https://forums.alliedmods.net/showpost.php?p=858244&postcount=6

This is the relevant SendProxy: https://github.com/NicknineTheEagle/TF2-Base/blob/master/src/game/shared/tf/tf_gamerules.cpp#L192 The SDK and HL2DM gamerules have one just like it too. I'm not *entirely* sure why it's OK with pRecipients being null but hey whatever. (As far as I can tell that class is just an int anyways :P)

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