[HamletEagle]

You probably mean okapi_build_method. Last question, how the m_pVIP offset can be used ?(652 win, 644 linux). I have tried all the natives and no one seem to be able to get the player index from it.

[Arkshine]

Since we don't have natives in AMXX to retrieve value from an object, you have to use I guess okapi_get_ptr_cbase.

[HamletEagle]

Yes, I tested all natives in okapi related to offsets, some return random values, and some crash(okapi_get_ptr_cbase crash too). In orpheu retrieving the value works fine.

Edit: Tested again, now it is working with okapi_get_ptr_cbase, with the same code. I don't get why.

[Arkshine]

Show your code.

[HamletEagle]

I don't do anything else, just retrieve the offset.

PHP Code:

#include <amxmodx>
#include <okapi>

new g_pGameRules
new m_pVIP

public plugin_precache()
{
    new const InstallGameRulesSignature[] = {0x68,0xDEF,0xDEF,0xDEF,0xDEF,0xFF,0xDEF,0xDEF,0xDEF,0xDEF,0xDEF,0x83,0xDEF,0xDEF,0xFF,0xDEF,0xDEF,0xDEF,0xDEF,0xDEF,0xA1,0xDEF,0xDEF,0xDEF,0xDEF,0xD9,0xDEF,0xDEF,0xD8,0xDEF,0xDEF,0xDEF,0xDEF,0xDEF,0xDF}
    new const InstallGameRulesSymbol   [] = "_Z16InstallGameRulesv"

    new okapi_func:HandleInstallGameRules = okapi_build_function(OkapiGetFunctionHandle(InstallGameRulesSignature, sizeof InstallGameRulesSignature, InstallGameRulesSymbol), arg_int)
    okapi_add_hook(HandleInstallGameRules, "OnInstallGameRules", .post = 1) 
}

public OnInstallGameRules()
{
    g_pGameRules = okapi_get_orig_return()
}

public plugin_init()
{
    register_clcmd("test", "test")
    m_pVIP = is_linux_server() ? 644 : 652
}

public test(id)
{
    server_print("Test: %i", okapi_get_ptr_cbase(g_pGameRules + m_pVIP))
}

OkapiGetFunctionHandle(const FunctionSignature[] = "", SignatureLen, const FunctionSymbol[])
{
    new OkapiFunc;

    if
    (
    (OkapiFunc = okapi_mod_get_symbol_ptr(FunctionSymbol)) || 
    (OkapiFunc = okapi_mod_find_sig(FunctionSignature, SignatureLen))
    )
    {
        return OkapiFunc
    }
    
    return 0
} 


Some minutes ago it produced a crash, not it works fine. No ideea why.

[meTaLiCroSS]

*waiting for Okapi release*

[HamletEagle]

Here again to report a bug. This happen when hooking virtual functions in linux(in windows it works). Steps are simple, hook a virtual function and enjoy the crash(segmentation fault). If it doesn't crash from first time, change map one time.

PHP Code:

#include <amxmodx>
#include <okapi>

public plugin_precache()
{
    new const InstallGameRulesSignature[] = {0x68,0xDEF,0xDEF,0xDEF,0xDEF,0xFF,0xDEF,0xDEF,0xDEF,0xDEF,0xDEF,0x83,0xDEF,0xDEF,0xFF,0xDEF,0xDEF,0xDEF,0xDEF,0xDEF,0xA1,0xDEF,0xDEF,0xDEF,0xDEF,0xD9,0xDEF,0xDEF,0xD8,0xDEF,0xDEF,0xDEF,0xDEF,0xDEF,0xDF}
    new const InstallGameRulesSymbol[] = "_Z16InstallGameRulesv"

    new okapi_func:InstallGameRules = okapi_build_function(OkapiGetFunctionAddress(InstallGameRulesSignature, sizeof InstallGameRulesSignature, InstallGameRulesSymbol), arg_int)
    okapi_add_hook(InstallGameRules, "OnInstallGameRules", .post = 1)
}  

public OnInstallGameRules()
{
    new Object = okapi_get_orig_return()
    new CheckWinConditionsFuncOffset = 65
    new okapi_func:CheckWinConditions = okapi_build_vfunc_ptr(Object, CheckWinConditionsFuncOffset, arg_void)    
}  

OkapiGetFunctionAddress(const FunctionSignature[] = "", SignatureLen, const FunctionSymbol[])
{
    new OkapiAddress

    if
    (
        (OkapiAddress = okapi_mod_get_symbol_ptr(FunctionSymbol)) || 
        (OkapiAddress = okapi_mod_find_sig(FunctionSignature, SignatureLen))
    )
    {
        return OkapiAddress
    }
    
    return PLUGIN_CONTINUE
} 


I'm sure that function offset is correct, succesfully hooked it with orpheu.

[Arkshine]

Why 'again' ? Previously that was your fault of misusing API or/and testing improperly, not an Okapi bug.

Unless i say bullshit, it's +2 for linux.

[HamletEagle]

Not again for the bug, I'm here again asking something

It crash when getting a virtual function(tried more than one, it's not necessary about CheckWinConditions). Tried with +2(I remember it is 65, but eh), still crash.

assert_20150804093827_1.dmp[3631]: Uploading dump (out-of-process)
/tmp/dumps/assert_20150804093827_1.dmp
Segmentation fault (core dumped)

[Arkshine]

Tried, no issue. Even after several restart. Hook is well called.
Sounds like again something you did not tested properly.
Using latest dev version + official okapi version.