Lords of Coding, I need help!!11!!one Created 3 years ago2021-02-11 19:10:02 UTC by Alexis_of_Steel

Hey, Lord of coding, I know your knowledge of Half-Life programming is vastly superior to mine. For dat reason, I ask for your help!

I want the beam that I have created (simulating the orange beam of the tau cannon) to come out from an $attachment that I defined from the QC file of my model, and not from the model's origin, as you can see in the image that I attach here:This is the bunch of code I wrote so far:

void CHEVScientistGauss :: HandleAnimEvent( MonsterEvent_t *pEvent )
(...)
case HEVGAUSS_AE_SHOOT_GAUSS:
{
    if (m_hEnemy != NULL)
    {
        TraceResult tr;
        Vector vecSrc, vecAngles;
        vecAngles = ShootAtEnemy( vecSrc );
        UTIL_TraceLine( vecSrc, vecSrc + vecAngles * 1024, dont_ignore_monsters, ENT( pev ), &tr);
        CBaseEntity *pEntity = CBaseEntity::Instance(tr.pHit);
        if (pEntity != NULL && pEntity->pev->takedamage)
        {
            ClearMultiDamage();
            pEntity->TraceAttack( pev, gSkillData.hevscientistGaussDmg, pev->velocity, &tr, DMG_SHOCK );
            ApplyMultiDamage( pev, pev );
        }
        MESSAGE_BEGIN( MSG_BROADCAST, SVC_TEMPENTITY );
            WRITE_BYTE( TE_BEAMENTPOINT );
            WRITE_SHORT( entindex() );
            WRITE_COORD( tr.vecEndPos.x );
            WRITE_COORD( tr.vecEndPos.y );
            WRITE_COORD( tr.vecEndPos.z );
            WRITE_SHORT( m_iBeam );
            WRITE_BYTE( 0 );
            WRITE_BYTE( 0 );
            WRITE_BYTE( 1 );
            WRITE_BYTE( 10 );
            WRITE_BYTE( 0 );
            WRITE_BYTE( 255 );
            WRITE_BYTE( 128 );
            WRITE_BYTE( 0 );
            WRITE_BYTE( 128 );
            WRITE_BYTE( 0 );
        MESSAGE_END();
        EMIT_SOUND( ENT(pev), CHAN_WEAPON, "weapons/gauss2.wav", 1, ATTN_NORM );
    }
}
break;

Thanks guys for your time.

Not the most helpful answer from me here since I'm still learning myself, but have you checked the code used for the HGrunt muzzle flashes etc. ?
Obviously for that animation the origin of the flash is set at the end of the gun attachment, so I imagine you just have to do the exact same thing here.

Anyway sorry if that doesn't help. Hope you get it sorted.

Hello hermanJnr, thank for your response! I still can't find a solution for my problem

To attach it to an attachment you need to pass the attachment index along like this:

WRITE_SHORT(entindex() + (attachmentIndex << 12));

Where attachmentIndex is the attachment index + 1 (0 means use entity origin).

Hello Solokiller. Thanks for answering. When I replace WRITE_SHORT( entindex() ); with WRITE_SHORT(entindex() + (attachmentIndex << 12)); it says identifier "attachmentIndex" is undefined. And it fails to compile.

You're supposed to replace attachmentIndex with the number matching the attachment.

Oh, I feel stupid Thank you, Solokiller. It works! My problem is solved! You're one of those Lords of coding!