#include <amxmodx>
#include <hamsandwich>
#include <xs>
#include <zombieplague>

public plugin_init()
{
       RegisterHam(Ham_TraceAttack, "player", "fw_TraceAttack")
}

public fw_TraceAttack(victim, attacker, Float:damage, Float:direction[3], tracehandle, damage_type)
{
       // 自己对自己不会有击退
       if (victim == attacker)
              return HAM_IGNORED;

       // 请勿残害队友(?
       if (zp_get_user_zombie(attacker) == zp_get_user_zombie(victim))
              return HAM_IGNORED;

       // 攻击者非人类或被伤害者非僵尸
       if (zp_get_user_zombie(attacker) || !zp_get_user_zombie(victim))
              return HAM_IGNORED;

       // 非小刀?
       if (get_user_weapon(attacker) != CSW_KNIFE)
              return HAM_IGNORED;

       static Float:hit_direction[3]
       hit_direction = direction

       // Get knockback vector
       static Float:knockback_vector
       knockback_vector = 120.0 //击退力
       xs_vec_mul_scalar(hit_direction, knockback_vector, hit_direction)
              
       static button
       button = pev(attacker, pev_button)
       if (button & IN_ATTACK2) //右键攻击加包
              zp_set_user_ammo_packs(attacker, zp_get_user_ammo_packs(attacker) + 1)

       set_vector_change_angle2(hit_direction, 0.0, 15.0, hit_direction)
       
       // 开始飞吧你
       set_pev(victim, pev_velocity, hit_direction)
       
       SetHamParamVector(4, Float:{0.0, 0.0, 0.0});
       return HAM_IGNORED;
}

//以下这段是增加BOT支援用的
new bool:BotHasDebug = false
public client_putinserver(id)
{
       if (!cvar_botquota || !is_user_bot(id) || BotHasDebug)
              return;
       
       new classname[32]
       pev(id, pev_classname, classname, 31)
       
       if (!equal(classname, "player"))
              set_task(0.1, "_Debug", id)
}
public _Debug(id)
{
       // Make sure it's a CZ bot and it's still connected
       if (!get_pcvar_num(cvar_botquota) || !is_user_connected(id))
              return;
       
       BotHasDebug = true
       RegisterHamFromEntity(Ham_TraceAttack, id, "fw_TraceAttack")
}