[Arkshine]

Forget about retrieving a decent signature for such function because the content is almost the same for such weapons and it's impossible to get a signature from that.

What you can do is to find the address of this function from PrimaryAttack.

Something like :

#include <amxmodx>
#include <fakemeta>
#include <hamsandwich>
#include <orpheu>
#include <orpheu_advanced>

const m_pPlayer = 41;
const Float:AwpAdjustedSpread = 0.08;

public plugin_init()
{
    register_plugin( "", "", "" );
    
    // Find AWPFire() address.
    new startAddress = OrpheuGetFunctionAddress( OrpheuGetFunctionFromClass( "weapon_awp", "PrimaryAttack", "CBasePlayerWeapon" ) );
    new fireAddress  = OrpheuGetNextCallAtAddress( startAddress, .number = 1 );
    
    // We can hook our function.
    OrpheuRegisterHook( OrpheuCreateFunction( fireAddress, "AWPFire", "CAWP" ), "OnAWPFire" );
}

public OnAWPFire( const weapon, const Float:spread, Float:cycleTime, const bool:useSemi )
{
    new player = get_pdata_cbase( weapon, m_pPlayer, 4 );
    OrpheuSetParam( 2, pev( player, pev_fov ) == 90 ? -AwpAdjustedSpread : 0.0 );
}

So, now, awp should have the same behavior like you were ducking all the time.


EDIT : forget the files :

functions/CAWP/AWPFire :

{
    "name"      : "AWPFire",
    "class"     : "CAWP",
    "library"   : "mod",
    "arguments" :
    [
        {
            "type"  : "float"
        },
        {
            "type"  : "float"
        },
        {
            "type"  : "int"
        }
    ]
}

virtualFunctions/CBasePlayerWeapon/PrimaryAttack :

{
    "name"    : "PrimaryAttack",
    "class"   : "CBasePlayerWeapon",
    "library" : "mod",
    "indexes" : 
    [
        {
            "os"    : "windows",
            "mod"   : "cstrike",
            "value" : 87
        },
        {
            "os"    : "linux",
            "mod"   : "cstrike",
            "value" : 89
        }
    ]
}