RE: CObjectSentrygun::GetEnemyAimPosition

CObjectSentrygun_GetEnemyAimPosition.cpp

// Reverse engineered by sigsegv
// TF2 server, version 20170214a
Vector CObjectSentrygun::GetEnemyAimPosition(CBaseEntity *pEnemy) const
{
	CTFPlayer *pTFPlayer = ToTFPlayer(pEnemy);
	if (pTFPlayer != nullptr)
	{
		bool bOnGround = ((pTFPlayer->GetFlags() & FL_ONGROUND) != 0);
		bool bDucking  = ((pTFPlayer->GetFlags() & FL_DUCKING)  != 0);
		
		if ((!bOnGround && bDucking) || pTFPlayer->m_Shared.InCond(TF_COND_TAUNTING))
		{
			int iBoneBipSpine2 = pTFPlayer->LookupBone("bip_spine_2");
			if (iBoneBipSpine2 != -1)
			{
				Vector vecBone; QAngle angBone;
				pTFPlayer->GetBonePosition(iBoneBipSpine2, vecBone, angBone);
				
				// special case: for players who are airborne-and-ducking, or taunting,
				// shoot at their bip_spine_2 bone position instead of their hull center
				return vecBone;
			}
		}
	}
	
	// by default, shoot at enemy's hull center
	return pEnemy->WorldSpaceCenter();
}