Анти-удар в спину

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

public plugin_init()
{
RegisterHam(Ham_TakeDamage, "player", "fw_TakeDamage")
}

public fw_TakeDamage(victim, inflictor, attacker, Float:damage, damage_type)
{
if (victim != attacker && is_user_alive(attacker) && damage_type & DMG_BULLET)
{
new Float:angles_victim[3], Float:angles_attacker[3]
pev(victim, pev_angles, angles_victim)
pev(attacker, pev_angles, angles_attacker)

// Что дальше????
}
}

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

#define IsPlayer(%0) (1 <= %0 <= 32)

public plugin_init() RegisterHam(Ham_TakeDamage, "player", "fwHamPlayerTakeDamage_Pre", .Post = false);
 
public fwHamPlayerTakeDamage_Pre(nVictimIndex, nInflictor, nAttackerIndex)
{
	if (nVictimIndex != nAttackerIndex && IsPlayer(nAttackerIndex))
	{
		new Float: vecSrc[3],
			Float: vecAngles[3],
			Float: vecForward[3],
			Float: vecAttackDir[3];
		   
		UTIL_GetCenter(nVictimIndex, vecSrc);
		UTIL_GetCenter(nInflictor, vecAttackDir);
		   
		xs_vec_sub(vecAttackDir, vecSrc, vecAttackDir);
		xs_vec_normalize(vecAttackDir, vecAttackDir);
		   
		pev(nVictimIndex, pev_angles, vecAngles);
		engfunc(EngFunc_MakeVectors, vecAngles);
		   
		global_get(glb_v_forward, vecForward);
		xs_vec_mul_scalar(vecAttackDir, -1.0, vecAttackDir);
		   
		if (xs_vec_dot(vecForward, vecAttackDir) > 0.3)
		{
			// HIT_BACK

			return HAM_SUPERCEDE;
		}
	}
	
	return HAM_IGNORED;
}
 
UTIL_GetCenter(const iEntity, Float: vecSrc[3])
{
	new Float: vecAbsMax[3],
	   Float: vecAbsMin[3];
       
	pev(iEntity, pev_absmax, vecAbsMax);
	pev(iEntity, pev_absmin, vecAbsMin);
       
	xs_vec_add(vecAbsMax, vecAbsMin, vecSrc);
	xs_vec_mul_scalar(vecSrc, 0.5, vecSrc);
}

if (xs_vec_dot(vecForward, vecAttackDir) > 0.3)