C++ CAI_BaseNPC::FVisible方法代码示例

bool CAI_ScriptConditions::EvalActorSeeTarget( const EvalArgs_t &args )
{
	if( m_fActorSeeTarget == TRS_NONE )
	{
		// Don't care, so don't do any work.
		return true;
	}

	if ( args.pTarget )
	{
		if ( !args.pActor )
			return true;

		CAI_BaseNPC *pNPCActor = args.pActor->MyNPCPointer();

#ifdef HL2_EPISODIC
		// This is the code we want to have written for HL2, but HL2 shipped without the QuerySeeEntity() call. This #ifdef really wants to be
		// something like #ifndef HL2_RETAIL, since this change does want to be in any products that are built henceforth. (sjb)
		bool fSee = pNPCActor->FInViewCone( args.pTarget ) && pNPCActor->FVisible( args.pTarget ) && pNPCActor->QuerySeeEntity( args.pTarget );
#else
		bool fSee = pNPCActor->FInViewCone( args.pTarget ) && pNPCActor->FVisible( args.pTarget );
#endif//HL2_EPISODIC

		if( fSee )
		{
			if( m_fActorSeeTarget == TRS_TRUE )
			{
				return true;
			}

			return false;
		}
		else
		{
			if( m_fActorSeeTarget == TRS_FALSE )
			{
				return true;
			}

			return false;
		}
	}

	return true;
}

bool CAI_OperatorBehavior::CanSeePositionEntity()
{
    CAI_BaseNPC *pOuter = GetOuter();

    Assert( m_hPositionEnt.Get() != NULL );

    // early out here.
    if( !pOuter->QuerySeeEntity(m_hPositionEnt) )
    {
        m_WatchSeeEntity.Stop();
        return false;
    }

    bool bSpotted = (pOuter->EyePosition().DistToSqr(m_hPositionEnt->GetAbsOrigin()) <= POSITION_ENT_ALWAYS_SEE_DIST);
    if ( !bSpotted )
    {
        bSpotted = ( pOuter->FInViewCone(m_hPositionEnt) && pOuter->FVisible(m_hPositionEnt) );
    }

    if (bSpotted )
    {
        // If we haven't seen it up until now, start a timer. If we have seen it, wait for the
        // timer to finish. This prevents edge cases where turning on the flashlight makes
        // NPC spot the position entity a frame before she spots an enemy.
        if ( !m_WatchSeeEntity.IsRunning() )
        {
            m_WatchSeeEntity.Start( 0.3,0.31 );
            return false;
        }

        if ( !m_WatchSeeEntity.Expired() )
            return false;

        return true;
    }

    m_WatchSeeEntity.Stop();
    return false;
}

//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
CBaseEntity *CAI_FuncTankBehavior::BestEnemy( void )
{
	// Only use this BestEnemy call when we are on the manned gun.
	if ( !m_hFuncTank ||!IsMounted() )
		return BaseClass::BestEnemy();

	CBaseEntity *pBestEnemy	= NULL;
	int	iBestDistSq	= MAX_COORD_RANGE * MAX_COORD_RANGE;	// so first visible entity will become the closest.
	int	iBestPriority = -1000;
	bool bBestUnreachable = false;							// Forces initial check
	bool bBestSeen = false;
	bool bUnreachable = false;
	int	iDistSq;

	AIEnemiesIter_t iter;

	// Get the current npc for checking from.
	CAI_BaseNPC *pNPC = GetOuter();
	if ( !pNPC )
		return NULL;

	for( AI_EnemyInfo_t *pEMemory = GetEnemies()->GetFirst( &iter ); pEMemory != NULL; pEMemory = GetEnemies()->GetNext( &iter ) )
	{
		CBaseEntity *pEnemy = pEMemory->hEnemy;
		if ( !pEnemy || !pEnemy->IsAlive() )
			continue;
		
		// UNDONE: Move relationship checks into IsValidEnemy?
		if ( ( pEnemy->GetFlags() & FL_NOTARGET ) || 
			 ( pNPC->IRelationType( pEnemy ) != D_HT && pNPC->IRelationType( pEnemy ) != D_FR ) ||
			 !IsValidEnemy( pEnemy ) )
			continue;

		if ( pEMemory->timeLastSeen < pNPC->GetAcceptableTimeSeenEnemy() )
			continue;

		if ( pEMemory->timeValidEnemy > gpGlobals->curtime )
			continue;

		// Skip enemies that have eluded me to prevent infinite loops
		if ( GetEnemies()->HasEludedMe( pEnemy ) )
			continue;

		// Establish the reachability of this enemy
		bUnreachable = pNPC->IsUnreachable( pEnemy );

		// Check view cone of the view tank here.
		bUnreachable = !m_hFuncTank->IsEntityInViewCone( pEnemy );
		if ( !bUnreachable )
		{
			// It's in the viewcone. Now make sure we have LOS to it.
			bUnreachable = !m_hFuncTank->HasLOSTo( pEnemy );
		}

		// If best is reachable and current is unreachable, skip the unreachable enemy regardless of priority
		if ( !bBestUnreachable && bUnreachable )
			continue;

		//  If best is unreachable and current is reachable, always pick the current regardless of priority
		if ( bBestUnreachable && !bUnreachable )
		{
			bBestSeen = ( pNPC->GetSenses()->DidSeeEntity( pEnemy ) || pNPC->FVisible( pEnemy ) ); // @TODO (toml 04-02-03): Need to optimize CanSeeEntity() so multiple calls in frame do not recalculate, rather cache
			iBestPriority = pNPC->IRelationPriority( pEnemy );
			iBestDistSq = static_cast<int>((pEnemy->GetAbsOrigin() - GetAbsOrigin() ).LengthSqr());
			pBestEnemy = pEnemy;
			bBestUnreachable = bUnreachable;
		}
		// If both are unreachable or both are reachable, chose enemy based on priority and distance
		else if ( pNPC->IRelationPriority( pEnemy ) > iBestPriority )
		{
			// this entity is disliked MORE than the entity that we
			// currently think is the best visible enemy. No need to do
			// a distance check, just get mad at this one for now.
			iBestPriority = pNPC->IRelationPriority ( pEnemy );
			iBestDistSq = static_cast<int>(( pEnemy->GetAbsOrigin() - GetAbsOrigin() ).LengthSqr());
			pBestEnemy = pEnemy;
			bBestUnreachable = bUnreachable;
		}
		else if ( pNPC->IRelationPriority( pEnemy ) == iBestPriority )
		{
			// this entity is disliked just as much as the entity that
			// we currently think is the best visible enemy, so we only
			// get mad at it if it is closer.
			iDistSq = static_cast<int>(( pEnemy->GetAbsOrigin() - GetAbsOrigin() ).LengthSqr());

			bool bCloser = ( iDistSq < iBestDistSq ) ;

			if ( bCloser || !bBestSeen )
			{
				// @TODO (toml 04-02-03): Need to optimize FVisible() so multiple calls in frame do not recalculate, rather cache
				bool fSeen = ( pNPC->GetSenses()->DidSeeEntity( pEnemy ) || pNPC->FVisible( pEnemy ) );
				if ( ( bCloser && ( fSeen || !bBestSeen ) ) || ( !bCloser && !bBestSeen && fSeen ) )
				{
					bBestSeen = fSeen;
					iBestDistSq = iDistSq;
					iBestPriority = pNPC->IRelationPriority( pEnemy );
					pBestEnemy = pEnemy;
//.........这里部分代码省略.........

void CNPC_Zombine::HandleAnimEvent( animevent_t *pEvent )
{
	if ( pEvent->event == AE_ZOMBINE_PULLPIN )
	{
		Vector vecStart;
		QAngle angles;
		GetAttachment( "grenade_attachment", vecStart, angles );

		CBaseGrenade *pGrenade = Fraggrenade_Create( vecStart, vec3_angle, vec3_origin, AngularImpulse( 0, 0, 0 ), this, 3.5f, true );

		if ( pGrenade )
		{
			// Move physobject to shadow
			IPhysicsObject *pPhysicsObject = pGrenade->VPhysicsGetObject();

			if ( pPhysicsObject )
			{
				pGrenade->VPhysicsDestroyObject();

				int iAttachment = LookupAttachment( "grenade_attachment");

				pGrenade->SetMoveType( MOVETYPE_NONE );
				pGrenade->SetSolid( SOLID_NONE );
				pGrenade->SetCollisionGroup( COLLISION_GROUP_DEBRIS );

				pGrenade->SetAbsOrigin( vecStart );
				pGrenade->SetAbsAngles( angles );

				pGrenade->SetParent( this, iAttachment );

				pGrenade->SetDamage( 200.0f );
				m_hGrenade = pGrenade;
				
				EmitSound( "Zombine.ReadyGrenade" );

				// Tell player allies nearby to regard me!
				CAI_BaseNPC **ppAIs = g_AI_Manager.AccessAIs();
				CAI_BaseNPC *pNPC;
				for ( int i = 0; i < g_AI_Manager.NumAIs(); i++ )
				{
					pNPC = ppAIs[i];

					if( pNPC->Classify() == CLASS_PLAYER_ALLY || pNPC->Classify() == CLASS_PLAYER_ALLY_VITAL && pNPC->FVisible(this) )
					{
						int priority;
						Disposition_t disposition;

						priority = pNPC->IRelationPriority(this);
						disposition = pNPC->IRelationType(this);

						pNPC->AddEntityRelationship( this, disposition, priority + 1 );
					}
				}
			}

			m_iGrenadeCount--;
		}

		return;
	}

	if ( pEvent->event == AE_NPC_ATTACK_BROADCAST )
	{
		if ( HasGrenade() )
			return;
	}

	BaseClass::HandleAnimEvent( pEvent );
}