fire_pos        = Cameras().Pos();
fire_dir        = Cameras().Dir();

Fvector cam_pos = Cameras().Pos();
Fvector cam_dir = Cameras().Dir();

float dist = HUD().GetCurrentRayQuery().range;
Fvector target_pos = cam_pos.mad(cam_dir, dist);
fire_dir.set(target_pos.sub(fire_pos));

void CActor::g_fireParams    (const CHudItem* pHudItem, Fvector &fire_pos, Fvector &fire_dir)
{
    fire_pos        = Cameras().Pos();
    fire_dir        = Cameras().Dir();

    const CMissile    *pMissile = smart_cast <const CMissile*> (pHudItem);
    CWeaponMagazined*    wpn = smart_cast<CWeaponMagazined*>(pHudItem->item().cast_weapon());
    if (pMissile){
        Fvector offset;
        XFORM().transform_dir(offset, m_vMissileOffset);
        fire_pos.add(offset);
    }else if(wpn){
        fire_pos.set(wpn->get_LastFP());
        if(active_cam()==eacFreeLook)
            fire_dir.set(wpn->get_LastFD());
        else{
            Fvector        pos;
            pos.mad(Device.vCameraPosition, Device.vCameraDirection, HUD().GetCurrentRayQuery().range);    //точка куда стреляем
            fire_dir.sub(pos, fire_pos).normalize();
        }
        fire_pos.mad(fire_dir, -1.0f);    //для того чтобы пули не летели через стену.
    }
}

CWeaponMagazined*    wpn = smart_cast<CWeaponMagazined*>(pHudItem->item().cast_weapon());
fire_pos.set(wpn->get_LastFP());

fire_dir.set(target_pos.sub(fire_pos));

fire_dir.sub(target_pos, fire_pos).normalize();

xr_3da/xrGame/script_game_object.h

void UnloadMagazine();

void UnloadMagazine(bool spawn_ammo = true);

xr_3da/xrGame/script_game_object_script3.cpp

class_<CScriptGameObject> &script_register_game_object2(class_<CScriptGameObject> &instance)
{
    instance
...
.def("unload_magazine", &CScriptGameObject::UnloadMagazine)

obj:unload_magazine()

* Detected CPU: GenuineIntel Pentium-II, F6/M5/S1, 1696.00 mhz, 25-clk 'rdtsc'
* CPU Features: RDTSC, MMX, SSE, SSE2

Initializing File System...
using fs-ltx fsgame.ltx
FS: 28624 files cached, 4592Kb memory used.
Init FileSystem 1.241836 sec
'xrCore' build 7469, Jul 19 2019

Initializing Engine...
Executing config-script "user.ltx"...
[d:\s.t.a.l.k.e.r. - shadow of chernobyl\userdata\user.ltx] successfully loaded.
Starting INPUT device...
Loading DLL: xrRender_R2.dll
Loading DLL: xrGame.dll
! Unable to find Software\GSC Game World\STALKER-SHOC\ in registry
* [win32]: free[4079104 K], reserved[48108 K], committed[67028 K]
* [ D3D ]: textures[0 K]
* [x-ray]: crt heap[6437 K], process heap[677 K], game lua[0 K], engine lua[0 K], render[0 K]
* [x-ray]: economy: strings[1032 K], smem[0 K]
Executing config-script "d:\s.t.a.l.k.e.r. - shadow of chernobyl\gamedata\config\default_controls.ltx"...
! cant convert dik_name for dik[16], prop=[
! cant convert dik_name for dik[17], prop=[
! cant convert dik_name for dik[18], prop=[
! cant convert dik_name for dik[19], prop=[
! cant convert dik_name for dik[20], prop=[
! cant convert dik_name for dik[21], prop=[
! cant convert dik_name for dik[22], prop=[
! cant convert dik_name for dik[23], prop=[
! cant convert dik_name for dik[24], prop=[
! cant convert dik_name for dik[25], prop=[
! cant convert dik_name for dik[26], prop=[
! cant convert dik_name for dik[27], prop=[
! cant convert dik_name for dik[30], prop=[
! cant convert dik_name for dik[31], prop=[
! cant convert dik_name for dik[32], prop=[
! cant convert dik_name for dik[33], prop=[
! cant convert dik_name for dik[34], prop=[
! cant convert dik_name for dik[35], prop=[
! cant convert dik_name for dik[36], prop=[
! cant convert dik_name for dik[37], prop=[
! cant convert dik_name for dik[38], prop=[
! cant convert dik_name for dik[39], prop=[
! cant convert dik_name for dik[40], prop=[
! cant convert dik_name for dik[41], prop=[
! cant convert dik_name for dik[44], prop=[
! cant convert dik_name for dik[45], prop=[
! cant convert dik_name for dik[46], prop=[
! cant convert dik_name for dik[47], prop=[
! cant convert dik_name for dik[48], prop=[
! cant convert dik_name for dik[49], prop=[
! cant convert dik_name for dik[50], prop=[
! cant convert dik_name for dik[51], prop=[
! cant convert dik_name for dik[52], prop=[
! cant convert dik_name for dik[144], prop=[
[d:\s.t.a.l.k.e.r. - shadow of chernobyl\gamedata\config\default_controls.ltx] successfully loaded.
Executing config-script "user.ltx"...
Executing config-script "d:\s.t.a.l.k.e.r. - shadow of chernobyl\gamedata\config\rspec_extreme.ltx"...
! Unknown command:  r__dtex_range
! Unknown command:  r__ssa_glod_end
! Unknown command:  r__ssa_glod_start
! Unknown command:  r__wallmark_ttl
! Unknown command:  rs_detail
! Unknown command:  rs_skeleton_update
! Unknown command:  vid_bpp
[d:\s.t.a.l.k.e.r. - shadow of chernobyl\gamedata\config\rspec_extreme.ltx] successfully loaded.
Executing config-script "d:\s.t.a.l.k.e.r. - shadow of chernobyl\gamedata\config\default_controls.ltx"...
[d:\s.t.a.l.k.e.r. - shadow of chernobyl\gamedata\config\default_controls.ltx] successfully loaded.
! Unknown command:  sv_statistic_save_auto
[d:\s.t.a.l.k.e.r. - shadow of chernobyl\userdata\user.ltx] successfully loaded.
SOUND: OpenAL: enumerate devices...
SOUND: OpenAL: EnumerationExtension Present
devices Generic Software
SOUND: OpenAL: system  default SndDevice name is Generic Software
SOUND: OpenAL: All available devices:
1. Generic Software, Spec Version 1.1 (default)
SOUND: OpenAL: SelectBestDevice is Generic Software 1.1
SOUND: OpenAL: Required device: Generic Software. Created device: Generic Software.
* sound: EAX 2.0 extension: absent
* sound: EAX 2.0 deferred: absent
* sound : cache: 65538 kb, 7609 lines, 8820 bpl
Starting RENDER device...
* GPU [vendor:8086]-[device:A16]: Intel(R) HD Graphics Family
* GPU driver: 10.18.10.3740
* CREATE: DeviceREF: 1
* Vertex Processor: PURE HARDWARE
*     Texture memory: 1690 M
*          DDI-level: 9.0
* GPU shading: vs(fffe0300/3.0/30), ps(ffff0300/3.0/30)
* GPU vertex cache: recognized, 32
* DVB created: 1536K
* DIB created: 512K
! Version conflict in shader 'def_shaders\def_aref'
! Version conflict in shader 'def_shaders\def_aref_v'
! Version conflict in shader 'def_shaders\def_trans'
! Version conflict in shader 'def_shaders\def_trans_v'
! Version conflict in shader 'def_shaders\def_trans_v_tuchi'
! Version conflict in shader 'def_shaders\lod_old'
! Renderer doesn't support blender 'effects\shadow_world'
! Version conflict in shader 'effects\watertest-1'
count of .thm files=1
load time=64 ms
* NULLRT supported
* ...and used
* HWDST/PCF supported and used
- r__tf_aniso 16
- r2_tf_mipbias 0.
Starting engine...
Loading DLL: xrGameSpy.dll

FATAL ERROR

[error]Expression    : xml_doc.NavigateToNode(path,index)
[error]Function      : CUIXmlInit::InitStatic
[error]File          : ui\UIXmlInit.cpp
[error]Line          : 172
[error]Description   : XML node not found
[error]Arguments     : msg_box_kicked_by_server:picture


stack trace:

0023:6C2A854A xrCore.dll, xrDebug::fail()
0023:6BC52CC4 xrGame.dll
0023:6BC782E2 xrGame.dll
0023:6BD87A77 xrGame.dll, xrFactory_Create()
0023:008EC7F5 xrEngine.exe, CApplication::OnEvent()

pActor->inventory().SetSlotsBlocked(u16(INV_STATE_BLOCK_ALL), true);

pActor->SetWeaponHideState(INV_STATE_BLOCK_ALL, true);

void CActor::SetWeaponHideState (u32 State, bool bSet)
{
    if (g_Alive() && this == Level().CurrentControlEntity())
    {
        NET_Packet    P;
        u_EventGen    (P, GEG_PLAYER_WEAPON_HIDE_STATE, ID());
        P.w_u32        (State);
        P.w_u8        (u8(bSet));
        u_EventSend    (P);
    };
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void CActor::OnEvent(NET_Packet& P, u16 type)
{
...
case GEG_PLAYER_WEAPON_HIDE_STATE:
        {
            u32 State        = P.r_u32();
            BOOL    Set        = !!P.r_u8();
            inventory().SetSlotsBlocked    ((u16)State, !!Set);
        }break;
...
}

// посылаем сообщение
void CActor::SetWeaponHideState (u32 State, bool bSet)
{
    if (g_Alive() && this == Level().CurrentControlEntity())
    {
        Msg("CActor::SetWeaponHideState State = %d, (u16)State = %d, u8(bSet) = %d", State, (u16)State, u8(bSet));
        
        NET_Packet    P;
        u_EventGen    (P, GEG_PLAYER_WEAPON_HIDE_STATE, ID());
        P.w_u32        (State);
        P.w_u8        (u8(bSet));
        u_EventSend    (P);
        
    };
}
// принимаем сообщение
void CActor::OnEvent        (NET_Packet& P, u16 type)
{
...
    case GEG_PLAYER_WEAPON_HIDE_STATE:
        {
            u32 State        = P.r_u32();
            u8    Set        = P.r_u8();

            Msg("GEG_PLAYER_WEAPON_HIDE_STATE State = %d, (u16)State = %d, Set = %d", State, (u16)State, Set);
            inventory().SetSlotsBlocked    ((u16)State, !!Set);
        }break;
...
}

Lua:
db.actor:hide_weapon()

исходники:
u32    INV_STATE_BLOCK_ALL        = 0xffffffff;
Actor()->SetWeaponHideState(INV_STATE_BLOCK_ALL,true);

CActor::SetWeaponHideState State = -1, (u16)State = 65535, u8(bSet) = 1
GEG_PLAYER_WEAPON_HIDE_STATE State = -1, (u16)State = 65535, Set = 1

void CActor::SetWeaponHideState (u32 State, bool bSet)
{
    if (g_Alive() && this == Level().CurrentControlEntity())
    {
        inventory().SetSlotsBlocked(u16(State), bSet);
        
/*
        NET_Packet    P;
        u_EventGen    (P, GEG_PLAYER_WEAPON_HIDE_STATE, ID());
        P.w_u32        (State);
        P.w_u8        (u8(bSet));
        u_EventSend    (P);
*/
    };
}