[IstuntmanI]

Just hook the callback like in a normal include. In every .pwn file the OnPlayerDeath (for example) callback should look like this, if you actually use the callback, but if you don't use it in that module you don't need to use it at all:

pawn Код:

public OnPlayerDeath( playerid, killerid, reason )
{
    /*
                    CODES THERE
    */

    #if defined Module_OnPlayerDeath
        return Module_OnPlayerDeath( playerid, killerid, reason );
    #else
        return 1;
    #endif
}

#if defined _ALS_OnPlayerDeath
    #undef OnPlayerDeath
#else
    #define _ALS_OnPlayerDeath
#endif

#define OnPlayerDeath Module_OnPlayerDeath

#if defined Module_OnPlayerDeath
    forward Module_OnPlayerDeath( playerid, killerid, reason );
#endif

You should change the "Module_" prefix in every module you use, so it won't conflict.