use booleans
Code:
new bool:is_vampire_active = false
when you press key in a menu(to activate vampire mode),
Code:
is_vampire_active = true
and when you hook deathmsg, check if this boolean is true to perform actions
PHP Code:
public hook_death(id)
{
if (is_vampire_active == false)
return;
// Killer id
nKiller = read_data(1)
if ( (read_data(3) == 1) && (read_data(5) == 0) )
{
nHp_add = get_pcvar_num (health_hs_add)
}
else
nHp_add = get_pcvar_num (health_add)
nHp_max = get_pcvar_num (health_max)
// Updating Killer HP
if(get_user_flags(nKiller) & ADMIN_LEVEL_H && vampiremode[id] == 1)
nKiller_hp = get_user_health(nKiller)
nKiller_hp += nHp_add
// Maximum HP check
if (nKiller_hp > nHp_max) nKiller_hp = nHp_max
set_user_health(nKiller, nKiller_hp)
}