[Krtola]

This is the plugin:

PHP Code:

#include <amxmodx>
#include <hamsandwich>
#include <fakemeta>
#include <fun>
#include <engine>
#include <biohazard>
#include <bhextra2> 

#define VipFlag ADMIN_LEVEL_H

#define SOUND "biohazard/hammer_round.wav"

#define PLUGIN "Only Knife"
#define VERSION "1.0"
#define AUTHOR "MAN?"

#define is_valid_player(%1) (1 <= %1 <= 32)

new bool:g_superhuman
new bool:g_superhuman_knife

new cvar_knockback

new g_iItem

public plugin_init() 
{
    register_plugin(PLUGIN, VERSION, AUTHOR)

    g_iItem = bh_register_extra_item("|VIP|Hammer Round", "humans are hammer warriors", 12000, BH_TEAM_SURVIVOR, GAMEPLAY);

    RegisterHam(Ham_Touch, "weaponbox", "fw_TouchWeapon")
    RegisterHam(Ham_Touch, "armoury_entity", "fw_TouchWeapon")
    RegisterHam(Ham_Touch, "weapon_shield", "fw_TouchWeapon")
    RegisterHam(Ham_TakeDamage, "player", "fw_TakeDamage")
    register_event("CurWeapon", "event_CurWeapon", "be", "1!0","1=1")
    register_event("HLTV", "event_round_start", "a", "1=0", "2=0")
    register_logevent("round_end", 2, "1=Round_End");

    cvar_knockback = register_cvar("knockback_power2", "7.0")
}

public event_gamestart()
{
    static id
    new num, iPlayers[32]
    get_players(iPlayers, num)
    if( !num )
    {
        return;
    }
    for(new i = 0; i < num; i++)
    {
        id = iPlayers[i]
        if(!is_user_connected(id) || !is_user_alive(id) || is_user_zombie(id))
            continue

        if(g_superhuman == true)
        {
              g_superhuman_knife = true
        }
        
              if(!is_user_zombie(id) && g_superhuman == true) set_user_armor(id, 1900)
        
    }
}

public bh_extra_item_selected(id, iItem)
{
    if(iItem == g_iItem)
    {
        g_superhuman = true  

        client_cmd(0, "spk %s", SOUND)
    }
}

public round_end()
{
    if(g_superhuman == true)
    { 
        g_superhuman = false 
        g_superhuman_knife = false
    }
}

public fw_TakeDamage(victim, inflictor, attacker, Float:damage)
{
  if(g_superhuman_knife == true)
  {
    if(!is_user_zombie(attacker) && is_valid_player(attacker) && get_user_weapon(attacker) == CSW_KNIFE)
    {
        SetHamParamFloat(4, damage * 20)

        if(is_user_zombie(victim))
        {
            new Float:vec[3] 
            new Float:oldvelo[3] 
            get_user_velocity(victim, oldvelo) 
            create_velocity_vector(victim , attacker , vec) 
            vec[0] += oldvelo[0] 
            vec[1] += oldvelo[1] 
            set_user_velocity(victim , vec) 
        }
    } 
  }    
}

stock create_velocity_vector(victim,attacker,Float:velocity[3])
{
    if(!is_user_alive(victim) || !is_user_alive(attacker))
        return 0

    new Float:vicorigin[3]
    new Float:attorigin[3]
    entity_get_vector(victim   , EV_VEC_origin , vicorigin)
    entity_get_vector(attacker , EV_VEC_origin , attorigin)

    new Float:origin2[3]
    origin2[0] = vicorigin[0] - attorigin[0]
    origin2[1] = vicorigin[1] - attorigin[1]

    new Float:largestnum = 0.0

    if(floatabs(origin2[0])>largestnum) largestnum = floatabs(origin2[0])
    if(floatabs(origin2[1])>largestnum) largestnum = floatabs(origin2[1])

    origin2[0] /= largestnum
    origin2[1] /= largestnum

    velocity[0] = ( origin2[0]*(get_pcvar_float(cvar_knockback) * 3000)) / get_entity_distance(victim , attacker)
    velocity[1] = ( origin2[1]*(get_pcvar_float(cvar_knockback) * 3000)) / get_entity_distance(victim , attacker)
    if(velocity[0] <= 20.0 || velocity[1] <= 20.0)
        velocity[2] = random_float(200.0 , 275.0)

    return 1
}

public plugin_precache()
{
    precache_sound(SOUND)
}

public fw_TouchWeapon(ent,id)
{
    if(!is_user_connected(id))return HAM_IGNORED
    if(g_superhuman_knife)return HAM_SUPERCEDE
    return HAM_IGNORED
}
public event_CurWeapon(id)
if(g_superhuman_knife && is_user_alive(id) && get_user_weapon(id) != CSW_KNIFE && !is_user_zombie(id))
engclient_cmd(id, "weapon_knife") 


For some reason this does not work (knife does not have more damage and knockback)

PHP Code:

public fw_TakeDamage(victim, inflictor, attacker, Float:damage)
{
  if(g_superhuman_knife == true)
  {
    if(!is_user_zombie(attacker) && is_valid_player(attacker) && get_user_weapon(attacker) == CSW_KNIFE)
    {
        SetHamParamFloat(4, damage * 20)

        if(is_user_zombie(victim))
        {
            new Float:vec[3] 
            new Float:oldvelo[3] 
            get_user_velocity(victim, oldvelo) 
            create_velocity_vector(victim , attacker , vec) 
            vec[0] += oldvelo[0] 
            vec[1] += oldvelo[1] 
            set_user_velocity(victim , vec) 
        }
    } 
  }    
} 


But,when I delete check get_user_weapon(attacker) == CSW_KNIFE then working properly (knife have more damage and knockback). But,when I delete that check,players are dying for no reason,just die like they committed suicide and after a short time server crash.
Can someone please help me how to solve this?