Как запретить переносить турели с помощью граба?

#include <amxmodx>
#include <amxmisc>
#include <fakemeta>

new const VERSION[ ] = "2.5"
new const TRKCVAR[ ] = "grab_new"
#define ADMIN ADMIN_KICK

#define TSK_CHKE 50

#define SF_FADEOUT 0

new client_data[33][4]
#define GRABBED  0
#define GRABBER  1
#define GRAB_LEN 2
#define FLAGS    3

new p_enabled, p_player
new p_throw_force, p_grab_force
new p_glow_r, p_glow_b, p_glow_g, p_glow_a
new p_glow

new MAXPLAYERS

public plugin_init( )
{
    register_plugin( "Grab New", VERSION, "All-CS.Moy.Su" )
    register_cvar( TRKCVAR, VERSION, FCVAR_SERVER )
    set_cvar_string( TRKCVAR, VERSION )
    

    p_glow = register_cvar( "grab_glow", "1" )
    p_enabled = register_cvar( "grab_enabled", "1" )
        p_player = register_cvar( "grab_only_player", "0" )

    p_throw_force = register_cvar( "grab_throw_force", "1500" )
    p_grab_force = register_cvar( "grab_force", "10" )
    
    p_glow_r = register_cvar( "grab_glow_r", "255" )
    p_glow_g = register_cvar( "grab_glow_g", "255" )
    p_glow_b = register_cvar( "grab_glow_b", "255" )
    p_glow_a = register_cvar( "grab_glow_a", "111" )

    register_clcmd( "+grab", "grab", ADMIN, "3a6uHguTb KhonKy" )
    register_clcmd( "-grab", "unset_grabbed" )

    register_clcmd( "drop" ,"throw" )
    
    register_event( "DeathMsg", "DeathMsg", "a" )
    
    register_forward( FM_PlayerPreThink, "fm_player_prethink" )

    MAXPLAYERS = get_maxplayers()
}

public plugin_precache( )
{
    precache_sound( "player/PL_PAIN2.WAV" )
}

public fm_player_prethink( id )
{
    new target
    if ( client_data[id][GRABBED] == -1 )
    {
        new Float:orig[3], Float:ret[3]
        get_view_pos( id, orig )
        ret = vel_by_aim( id, 9999 )
        
        ret[0] += orig[0]
        ret[1] += orig[1]
        ret[2] += orig[2]
        
        target = traceline( orig, ret, id, ret )
        
        if( 0 < target <= MAXPLAYERS )
        {
            if( is_grabbed( target, id ) ) return FMRES_IGNORED
            set_grabbed( id, target )
        }
        else if( !get_pcvar_num( p_player ) )
        {
            new movetype
            if( target && pev_valid( target ) )
            {
                movetype = pev( target, pev_movetype )
                if( !( movetype == MOVETYPE_WALK || movetype == MOVETYPE_STEP || movetype == MOVETYPE_TOSS ) )
                    return FMRES_IGNORED
            }
            else
            {
                target = 0
                new ent = engfunc( EngFunc_FindEntityInSphere, -1, ret, 12.0 )
                while( !target && ent > 0 )
                {
                    movetype = pev( ent, pev_movetype )
                    if( ( movetype == MOVETYPE_WALK || movetype == MOVETYPE_STEP || movetype == MOVETYPE_TOSS )
                            && ent != id  )
                        target = ent
                    ent = engfunc( EngFunc_FindEntityInSphere, ent, ret, 12.0 )
                }
            }
            if( target )
            {
                if( is_grabbed( target, id ) ) return FMRES_IGNORED
                set_grabbed( id, target )
            }
        }
    }
    
    target = client_data[id][GRABBED]
    if( target > 0 )
    {
        if( !pev_valid( target ) || ( pev( target, pev_health ) < 1 && pev( target, pev_max_health ) ) )
        {
            unset_grabbed( id )
            return FMRES_IGNORED
        }

        if( target > MAXPLAYERS ) grab_think( id )
    }
    
    target = client_data[id][GRABBER]
    if( target > 0 ) grab_think( target )
    
    return FMRES_IGNORED
}

public grab_think( id )
{
    new target = client_data[id][GRABBED]

    if( pev( target, pev_movetype ) == MOVETYPE_FLY && !(pev( target, pev_button ) & IN_JUMP ) ) client_cmd( target, "+jump;wait;-jump" )

    new Float:tmpvec[3], Float:tmpvec2[3], Float:torig[3], Float:tvel[3]
    
    get_view_pos( id, tmpvec )
    
    tmpvec2 = vel_by_aim( id, client_data[id][GRAB_LEN] )
    
    torig = get_target_origin_f( target )
    
    new force = get_pcvar_num( p_grab_force )
    
    tvel[0] = ( ( tmpvec[0] + tmpvec2[0] ) - torig[0] ) * force
    tvel[1] = ( ( tmpvec[1] + tmpvec2[1] ) - torig[1] ) * force
    tvel[2] = ( ( tmpvec[2] + tmpvec2[2] ) - torig[2] ) * force
    
    set_pev( target, pev_velocity, tvel )
}

stock Float:get_target_origin_f( id )
{
    new Float:orig[3]
    pev( id, pev_origin, orig )

    if( id > MAXPLAYERS )
    {
        new Float:mins[3], Float:maxs[3]
        pev( id, pev_mins, mins )
        pev( id, pev_maxs, maxs )
        
        if( !mins[2] ) orig[2] += maxs[2] / 2
    }
    
    return orig
}

public grab( id, level, cid )
{
    if( !cmd_access( id, level, cid, 1 ) || !get_pcvar_num( p_enabled ) ) return PLUGIN_HANDLED
    
    if ( !client_data[id][GRABBED] ) client_data[id][GRABBED] = -1    
    
    return PLUGIN_HANDLED
}

public throw( id )
{
    new target = client_data[id][GRABBED]
    if( target > 0 )
    {
        set_pev( target, pev_velocity, vel_by_aim( id, get_pcvar_num(p_throw_force) ) )
        unset_grabbed( id )
        return PLUGIN_HANDLED
    }

    return PLUGIN_CONTINUE
}

public unset_grabbed( id )
{
    new target = client_data[id][GRABBED]
    if( target > 0 && pev_valid( target ) )
    {
        set_pev( target, pev_renderfx, kRenderFxNone )
        set_pev( target, pev_rendercolor, {255.0, 255.0, 255.0} )
        set_pev( target, pev_rendermode, kRenderNormal )
        set_pev( target, pev_renderamt, 16.0 )
        
        if( 0 < target <= MAXPLAYERS )
            client_data[target][GRABBER] = 0
    }
    client_data[id][GRABBED] = 0
}

public set_grabbed( id, target )
{
    if( get_pcvar_num( p_glow ) )
    {
        new Float:color[3]
        color[0] = get_pcvar_float( p_glow_r )
        color[1] = get_pcvar_float( p_glow_g )
        color[2] = get_pcvar_float( p_glow_b )
        set_pev( target, pev_renderfx, kRenderFxGlowShell )
        set_pev( target, pev_rendercolor, color )
        set_pev( target, pev_rendermode, kRenderTransColor )
        set_pev( target, pev_renderamt, get_pcvar_float( p_glow_a ) )
    }
    
    if( 0 < target <= MAXPLAYERS )
        client_data[target][GRABBER] = id
    client_data[id][FLAGS] = 0
    client_data[id][GRABBED] = target
    new Float:torig[3], Float:orig[3]
    pev( target, pev_origin, torig )
    pev( id, pev_origin, orig )
    client_data[id][GRAB_LEN] = floatround( get_distance_f( torig, orig ) )
}

public is_grabbed( target, grabber )
{
    for( new i = 1; i <= MAXPLAYERS; i++ )
        if( client_data[i][GRABBED] == target )
        {
            client_print( grabber, print_chat, "[AMXX] %L", grabber, "ALREADY" )
            unset_grabbed( grabber )
            return true
        }
    return false
}

public DeathMsg( )
    kill_grab( read_data( 2 ) )

public client_disconnect( id )
{
    kill_grab( id )
    return PLUGIN_CONTINUE
}

public kill_grab( id )
{
    if( client_data[id][GRABBED] )
        unset_grabbed( id )
    else if( client_data[id][GRABBER] )
        unset_grabbed( client_data[id][GRABBER] )
}

stock traceline( const Float:vStart[3], const Float:vEnd[3], const pIgnore, Float:vHitPos[3] )
{
    engfunc( EngFunc_TraceLine, vStart, vEnd, 0, pIgnore, 0 )
    get_tr2( 0, TR_vecEndPos, vHitPos )
    return get_tr2( 0, TR_pHit )
}

stock get_view_pos( const id, Float:vViewPos[3] )
{
    new Float:vOfs[3]
    pev( id, pev_origin, vViewPos )
    pev( id, pev_view_ofs, vOfs )        
    
    vViewPos[0] += vOfs[0]
    vViewPos[1] += vOfs[1]
    vViewPos[2] += vOfs[2]
}

stock Float:vel_by_aim( id, speed = 1 )
{
    new Float:v1[3], Float:vBlah[3]
    pev( id, pev_v_angle, v1 )
    engfunc( EngFunc_AngleVectors, v1, v1, vBlah, vBlah )
    
    v1[0] *= speed
    v1[1] *= speed
    v1[2] *= speed
    
    return v1
}