[CrazY.]

Hello, I did a "laser spot" like of RPG of Half-Life 1. I'm not sure why, but the entity disappear depending of the location that I walk around in the map. In some maps the laser nor appear. The laser is being updated in weapon idle.

CLaserSpot_Create()
{
    new pevLaserSpot = rg_create_entity("env_sprite");

    set_entvar(pevLaserSpot, var_movetype, MOVETYPE_NONE);
    set_entvar(pevLaserSpot, var_solid, SOLID_NOT);
    set_entvar(pevLaserSpot, var_rendermode, kRenderGlow);
    set_entvar(pevLaserSpot, var_renderfx, kRenderFxNoDissipation);
    set_entvar(pevLaserSpot, var_renderamt, 255.0);
    entity_set_model(pevLaserSpot, g_szLaserDotModel);
    entity_set_size(pevLaserSpot, Float:{ 0.0, 0.0, 0.0 }, Float:{ 0.0, 0.0, 0.0 });
    set_entvar(pevLaserSpot, var_classname, g_pszNameLaserSpot);
    //set_entvar(pevLaserSpot, var_owner, this);

    return pevLaserSpot;
}

CRpg_UpdateSpot(this)
{
    if (is_nullent(g_pevLaserSpot[this]))
        return;

    static Float:vecSrc[3], Float:vecVelocity[3], Float:vecAiming[3], Float:vecEndPos[3];
    
    ExecuteHamB(Ham_Player_GetGunPosition, this, vecSrc);
    velocity_by_aim(this, 8192, vecVelocity);

    xs_vec_add(vecSrc, vecVelocity, vecAiming);

    engfunc(EngFunc_TraceLine, vecSrc, vecAiming, DONT_IGNORE_MONSTERS, this, 0);

    get_tr2(0, TR_vecEndPos, vecEndPos);
    //client_print(0, print_chat, "TR_pHit(%d)", get_tr2(0, TR_pHit))
    //get_pmtrace(tr, pmt_endpos, vecEndPos);

    /*message_begin(MSG_ONE_UNRELIABLE, SVC_TEMPENTITY, .player = this)
    {
        write_byte(TE_BEAMPOINTS);
        write_coord_f(vecSrc[0]);
        write_coord_f(vecSrc[1]);
        write_coord_f(vecSrc[2]);
        write_coord_f(vecEndPos[0]);
        write_coord_f(vecEndPos[1]);
        write_coord_f(vecEndPos[2]);
        write_short(g_sModelIndexSmokeTrail)
        write_byte(0)
        write_byte(0)
        write_byte(1)
        write_byte(15)
        write_byte(0)
        write_byte(0)
        write_byte(0)
        write_byte(255)
        write_byte(255)
        write_byte(0)
    }
    message_end();*/

    set_entvar(g_pevLaserSpot[this], var_origin, vecEndPos);
}

[CrazY.]

Originally Posted by KliPPy EngFunc_SetOrigin doesn't just set the origin, it does some other stuff that the physics system needs. While changing pev_origin may work in some cases, the former is the safest bet.

[edon1337]

Apparently some of pev_* functions don't seem to properly set everything. Better to use EngFunc or Fun natives. Even pev_maxspeed is buggy and EngFunc_SetClientMaxspeed should be used instead.

[klippy]

Originally Posted by edon1337 Apparently some of pev_* functions don't seem to properly set everything. Better to use EngFunc or Fun natives. Even pev_maxspeed is buggy and EngFunc_SetClientMaxspeed should be used instead.

It's because they are not functions. It has the same effect as setting a variable in your plugin - no additional code is executed.

[CrazY.]

It's not a bug, in Half-Life source code also it's used a engine function to set origin and size in entities (the same happens with size, better use EngFunc_SetSize or entity_set_size).

// enginecallback.h
#define SET_SIZE        (*g_engfuncs.pfnSetSize)
#define SET_ORIGIN    (*g_engfuncs.pfnSetOrigin)

// util.cpp
void UTIL_SetSize( entvars_t *pev, const Vector &vecMin, const Vector &vecMax )
{
    SET_SIZE( ENT(pev), vecMin, vecMax );
}

void UTIL_SetOrigin( entvars_t *pev, const Vector &vecOrigin )
{
    SET_ORIGIN(ENT(pev), vecOrigin );
}