[MayroN]

Tell me how to put that only the people and the survivor inflicted damage on zombies

Did so with the connected includ

PHP Code:

if(HasKnife(iAttacker) && (DamageBit & DMG_KNIFE) && zp_get_user_zombie(id) && zp_get_user_nemesis(id)) 
return HAM_IGNORED; 


Or forcibly with ! == !zp_get_user_zombie(id)

Or stop.It's people who have to deal Chainsaw damage to zombies, so
zp_get_user_human (id) ?

Thanks so much

PHP Code:

#include <amxmodx>
#include <fakemeta>
#include <hamsandwich>

#define KNIFE_DAMAGE        500.0

public plugin_init()
{
    RegisterHam(Ham_TraceAttack,    "func_breakable",    "HamHook_TraceAttack",     false);
    RegisterHam(Ham_TraceAttack,    "hostage_entity",    "HamHook_TraceAttack",     false);
    RegisterHam(Ham_TraceAttack,    "info_target",         "HamHook_TraceAttack",    false);
    RegisterHam(Ham_TraceAttack,    "player",             "HamHook_TraceAttack",    false);
}

#define DMG_KNIFE     ( DMG_NEVERGIB | DMG_BULLET )

#define HasKnife(%1)  (get_user_weapon(%1) == CSW_KNIFE)

public HamHook_TraceAttack(const iVictim, const iAttacker, const Float:flDamage, const Float:VecDir[3], const iTrace, const DamageBit)
{
    if(!is_user_connected(iAttacker))
        return HAM_IGNORED;
    
    if(HasKnife(iAttacker) && (DamageBit & DMG_KNIFE))
        return HAM_IGNORED;
    
    SetHamParamFloat(3, KNIFE_DAMAGE);
    
    return HAM_IGNORED;
}