How to check if client doesn't have a flag

SilentLikeSilence · **Author**

Hello!

I'm making a plugin and I want to distinguish admins and donators.

PHP Code:


			


new flags = GetUserFlagBits(client);



//Admins (have generic flag and kick flag)

if(flags & ADMFLAG_GENERIC && flags & ADMFLAG_KICK)



//Donators (have generic flag and don't have kick flag

if(flags & ADMFLAG_GENERIC && flags *what can I use here?* ADMFLAG_KICK)

Thanks for help!
Silent

AltPluzF4 · 12-26-2009 , 11:27 Re: How to check if client doesn't have a flag

You can simply set it in parenthesis and add the ! operator.

PHP Code:


			
if (flags & ADMFLAG_GENERIC && !(flags & ADMFLAG_KICK))

Dragonshadow · 12-26-2009 , 12:21 Re: How to check if client doesn't have a flag

I'm half asleep, but maybe this could help:

PHP Code:


			
 
stock HasFlag(client, flag)
{
    new AdminId:admin = GetUserAdmin(client);
    if((admin != INVALID_ADMIN_ID) && (GetAdminFlag(admin, flag, Access_Effective) == true))
    {
        return true;
    }
    return false;
}

Antithasys · 12-26-2009 , 13:48 Re: How to check if client doesn't have a flag

Look at my core stock function SM_IsValidAdmin()

Does all you need, and you can even make the donator flag a cvar and pass the flag string you want to look for.

SilentLikeSilence · 12-26-2009 , 14:43 Re: How to check if client doesn't have a flag

Works perfectly, thanks.

Kevin_b_er · 12-26-2009 , 16:32 Re: How to check if client doesn't have a flag

With some bit-manipulation-foo:

if((flags & (ADMFLAG_GENERIC | ADMFLAG_KICK)) == ADMFLAG_GENERIC)

Wazz · 12-26-2009 , 16:46 Re: How to check if client doesn't have a flag

Quote:

Originally Posted by SilentLikeSilence

PHP Code:


			
//Donators (have generic flag and don't have kick flag)
if(flags & ADMFLAG_GENERIC && flags *what can I use here?* ADMFLAG_KICK)

becomes

PHP Code:


			
//Donators (have generic flag and don't have kick flag)
if(flags & ADMFLAG_GENERIC && flags ^ ADMFLAG_KICK)

^ is XOR

Kevin_b_er · 12-27-2009 , 16:06 Re: How to check if client doesn't have a flag

Wazz, I don't think that will work to use XOR like that.

For the person with both:
ADMFLAG_KICK is 100 (base 2) and ADMFLAG_GENERIC is 10 (base 2), making 110.

So we have the following XOR operation of 110 with 100 (the kick flag), which is flags ^ ADMFLAG_KICK with flags = both generic and kick.

Code:

0110
0100
-----
0010

If they only had the generic flag:

Code:

0010
0100
-----
0110

Neither calculation results in 0, so they both be true and flags ^ ADMFLAG_KICK will be true for the examples in the OP's post.

Wazz · 12-27-2009 , 18:24 Re: How to check if client doesn't have a flag

Thanks for pointing that out. So I'm thinking ~flags & ADMFLAG_KICK would work.

Code:

1001 - 0110 inverted
0100
----
0000 - False, user has ADMFLAG_KICK

Code:

1101 - 0010 inverted
0100
----
0100 - True, user doesn't have ADMFLAG_KICK

These operations always confuse me.

bl4nk · 12-27-2009 , 20:13 Re: How to check if client doesn't have a flag

Just do what AltPluzF4 said.