First version of the SOurce SDK 2013

1 files changed, 1736 insertions, 0 deletions

diff --git a/mp/src/game/server/ai_behavior_passenger.cpp b/mp/src/game/server/ai_behavior_passenger.cpp
new file mode 100644
index 00000000..7d154025
--- /dev/null
+++ b/mp/src/game/server/ai_behavior_passenger.cpp
@@ -0,0 +1,1736 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//

+//

+// Purpose: Behavior for NPCs riding in cars (with boys)

+//

+//=============================================================================

+

+#include "cbase.h"

+#include "ai_playerally.h"

+#include "ai_motor.h"

+#include "bone_setup.h"

+#include "vehicle_base.h"

+#include "entityblocker.h"

+#include "ai_behavior_passenger.h"

+#include "ai_pathfinder.h"

+#include "ai_network.h"

+#include "ai_node.h"

+#include "ai_moveprobe.h"

+#include "env_debughistory.h"

+

+// Custom activities

+int ACT_PASSENGER_IDLE;

+int	ACT_PASSENGER_RANGE_ATTACK1;

+

+ConVar passenger_debug_transition( "passenger_debug_transition", "0" );

+ConVar passenger_impact_response_threshold( "passenger_impact_response_threshold", "-350.0" );

+

+#define ORIGIN_KEYNAME "origin"

+#define ANGLES_KEYNAME "angles"

+

+BEGIN_DATADESC( CAI_PassengerBehavior )

+

+	DEFINE_EMBEDDED( m_vehicleState ),

+	DEFINE_FIELD( m_bEnabled,			FIELD_BOOLEAN ),

+	DEFINE_FIELD( m_PassengerIntent,	FIELD_INTEGER ),

+	DEFINE_FIELD( m_PassengerState,		FIELD_INTEGER ),

+	DEFINE_FIELD( m_hVehicle,			FIELD_EHANDLE ),

+	DEFINE_FIELD( m_hBlocker,			FIELD_EHANDLE ),

+	DEFINE_FIELD( m_vecTargetPosition,	FIELD_POSITION_VECTOR ),

+	DEFINE_FIELD( m_vecTargetAngles,	FIELD_VECTOR ),

+	DEFINE_FIELD( m_flOriginStartFrame, FIELD_FLOAT ),

+	DEFINE_FIELD( m_flOriginEndFrame,	FIELD_FLOAT ),

+	DEFINE_FIELD( m_flAnglesStartFrame, FIELD_FLOAT ),

+	DEFINE_FIELD( m_flAnglesEndFrame,	FIELD_FLOAT ),

+	DEFINE_FIELD( m_nTransitionSequence,FIELD_INTEGER ),

+

+END_DATADESC();

+

+BEGIN_SIMPLE_DATADESC( passengerVehicleState_t )

+

+	DEFINE_FIELD( m_bWasBoosting,			FIELD_BOOLEAN ),

+	DEFINE_FIELD( m_bWasOverturned,			FIELD_BOOLEAN ),

+	DEFINE_FIELD( m_vecLastLocalVelocity,	FIELD_VECTOR ),

+	DEFINE_FIELD( m_vecDeltaVelocity,		FIELD_VECTOR ),

+	DEFINE_FIELD( m_vecLastAngles,			FIELD_VECTOR ),

+	DEFINE_FIELD( m_flNextWarningTime,		FIELD_TIME ),

+	DEFINE_FIELD( m_flLastSpeedSqr,			FIELD_FLOAT ),

+	DEFINE_FIELD( m_bPlayerInVehicle,		FIELD_BOOLEAN ),

+

+END_DATADESC();

+

+//-----------------------------------------------------------------------------

+// Constructor

+//-----------------------------------------------------------------------------

+CAI_PassengerBehavior::CAI_PassengerBehavior( void ) : 

+m_bEnabled( false ), 

+m_hVehicle( NULL ), 

+m_PassengerState( PASSENGER_STATE_OUTSIDE ), 

+m_PassengerIntent( PASSENGER_INTENT_NONE ),

+m_nTransitionSequence( -1 )

+{

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Enables the behavior to run

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::Enable( CPropJeepEpisodic *pVehicle, bool bImmediateEnter /*= false*/ ) 

+{ 

+	if ( m_bEnabled && m_hVehicle.Get() )

+		return;

+

+	m_bEnabled = true; 

+	m_hVehicle = pVehicle;

+	SetPassengerState( PASSENGER_STATE_OUTSIDE );

+

+	// Init our starting information about the vehicle

+	InitVehicleState();

+}

+

+void CAI_PassengerBehavior::OnRestore()

+{

+	if ( m_bEnabled && !m_hVehicle.Get() )

+	{

+		Disable();

+	}

+	

+	BaseClass::OnRestore();

+}

+

+

+//-----------------------------------------------------------------------------

+// Purpose: Stops the behavior from being run

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::Disable( void )

+{

+	m_bEnabled = false;

+	m_hVehicle = NULL;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Starts the process of entering a vehicle

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::EnterVehicle( void )

+{

+	// If we're already in the vehicle, simply cancel out our intents

+	if ( GetPassengerState() == PASSENGER_STATE_INSIDE || GetPassengerState() == PASSENGER_STATE_ENTERING )

+	{

+		// Clear out an exit

+		if ( m_PassengerIntent == PASSENGER_INTENT_EXIT )

+		{

+			m_PassengerIntent = PASSENGER_INTENT_NONE;

+			ClearCondition( COND_PASSENGER_ENTERING );

+			ClearCondition( COND_PASSENGER_EXITING );

+		}

+

+		return;

+	}

+

+	// Update our internal state

+	m_PassengerIntent = PASSENGER_INTENT_ENTER;

+

+	// Otherwise set this condition and go!

+	SetCondition( COND_PASSENGER_ENTERING );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Starts the process of exiting a vehicle

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::ExitVehicle( void )

+{

+	// Must be in the seat

+	if ( GetPassengerState() == PASSENGER_STATE_OUTSIDE || GetPassengerState() == PASSENGER_STATE_EXITING )

+	{

+		// Clear out an entrance

+		if ( m_PassengerIntent == PASSENGER_INTENT_ENTER )

+		{

+			m_PassengerIntent = PASSENGER_INTENT_NONE;

+			SetCondition( COND_PASSENGER_CANCEL_ENTER );

+			ClearCondition( COND_PASSENGER_ENTERING );

+			ClearCondition( COND_PASSENGER_EXITING );

+		}

+		return;

+	}

+

+	// Update our internal state

+	m_PassengerIntent = PASSENGER_INTENT_EXIT;

+

+	//

+	// Everything below this point will still attempt to exit the vehicle, once able

+	//

+

+	// Must have a valid vehicle

+	if ( m_hVehicle == NULL )

+		return;

+

+	// Cannot exit while we're upside down

+	if ( m_hVehicle->IsOverturned() )

+		return;

+

+	// Interrupt what we're doing

+	SetCondition( COND_PASSENGER_EXITING );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: FIXME - This should move into something a bit more flexible

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::AddPhysicsPush( float force )

+{

+	/*

+	// Kick the vehicle so the player knows we've arrived

+	Vector impulse = m_hVehicle->GetAbsOrigin() - GetOuter()->GetAbsOrigin();

+	VectorNormalize( impulse );

+	impulse.z = -0.75;

+	VectorNormalize( impulse );

+	Vector vecForce = impulse * force;

+	

+	m_hVehicle->VPhysicsGetObject()->ApplyForceOffset( vecForce, GetOuter()->GetAbsOrigin() );

+	*/

+

+	Vector vecDir;

+

+	IPhysicsObject *pObject = GetOuter()->VPhysicsGetObject();

+	Vector vecVelocity;

+	pObject->GetVelocity( &vecVelocity, NULL );

+	GetOuter()->GetVectors( NULL, NULL, &vecDir );

+	vecDir.Negate();

+

+	Vector vecForce = vecDir * force;

+

+	m_hVehicle->VPhysicsGetObject()->ApplyForceOffset( vecForce, GetOuter()->GetAbsOrigin() );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::IsPassengerHostile( void )

+{

+	CBaseEntity *pPlayer = AI_GetSinglePlayer();

+	

+	// If the player hates or fears the passenger, they're hostile

+	if ( GetOuter()->IRelationType( pPlayer ) == D_HT || GetOuter()->IRelationType( pPlayer ) == D_FR )

+		return true;

+

+	return false;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::InitVehicleState( void )

+{

+	// Set the player's state

+	CBasePlayer *pPlayer = AI_GetSinglePlayer();

+	m_vehicleState.m_bPlayerInVehicle = ( pPlayer && pPlayer->IsInAVehicle() && pPlayer->GetServerVehicle() == m_hVehicle->GetServerVehicle() );

+

+	// Update our vehicle state so we don't confuse our previous velocity on the first frame!

+	m_vehicleState.m_bWasBoosting = false;

+	m_vehicleState.m_bWasOverturned = false;

+	m_vehicleState.m_flNextWarningTime = 0.0f;

+	m_vehicleState.m_vecDeltaVelocity = vec3_origin;

+	m_vehicleState.m_flNextWarningTime = gpGlobals->curtime;

+	m_vehicleState.m_vecLastAngles = m_hVehicle->GetAbsAngles();

+

+	Vector	localVelocity;

+	GetLocalVehicleVelocity( &m_vehicleState.m_vecLastLocalVelocity );

+

+	m_vehicleState.m_flLastSpeedSqr = localVelocity.LengthSqr();

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Puts the NPC in hierarchy with the vehicle and makes them intangible

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::FinishEnterVehicle( void )

+{

+	if ( m_hVehicle == NULL )

+		return;

+

+	// Get the ultimate position we want to be in

+	Vector vecFinalPos;

+	QAngle vecFinalAngles;

+	GetEntryTarget( &vecFinalPos, &vecFinalAngles );

+

+	// Make sure we're exactly where we need to be

+	GetOuter()->SetLocalOrigin( vecFinalPos );

+	GetOuter()->SetLocalAngles( vecFinalAngles );

+	GetOuter()->SetMoveType( MOVETYPE_NONE );

+	GetOuter()->GetMotor()->SetYawLocked( true );

+

+	// We're now riding inside the vehicle

+	SetPassengerState( PASSENGER_STATE_INSIDE );

+	

+	// If we've not been told to leave immediately, we're done

+	if ( m_PassengerIntent == PASSENGER_INTENT_ENTER )

+	{

+		m_PassengerIntent = PASSENGER_INTENT_NONE;

+	}

+	

+	// Tell the vehicle we've succeeded 

+	m_hVehicle->NPC_FinishedEnterVehicle( GetOuter(), (IsPassengerHostile()==false) );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Removes the NPC from the car

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::FinishExitVehicle( void )

+{

+	if ( m_hVehicle == NULL )

+		return;

+

+	// Destroy the blocker

+	if ( m_hBlocker != NULL )

+	{

+		UTIL_Remove( m_hBlocker );

+		m_hBlocker = NULL;

+	}

+

+	// To do this, we need to be very sure we're in a good spot

+	GetOuter()->SetCondition( COND_PROVOKED );

+	GetOuter()->SetMoveType( MOVETYPE_STEP );

+	GetOuter()->RemoveFlag( FL_FLY );

+	GetOuter()->GetMotor()->SetYawLocked( false );

+

+	// Re-enable the physical collisions for this NPC

+	IPhysicsObject *pPhysObj = GetOuter()->VPhysicsGetObject();

+	if ( pPhysObj != NULL )

+	{

+		pPhysObj->EnableCollisions( true );

+	}

+

+	m_hVehicle->NPC_RemovePassenger( GetOuter() );

+	m_hVehicle->NPC_FinishedExitVehicle( GetOuter(), (IsPassengerHostile()==false) );

+

+	SetPassengerState( PASSENGER_STATE_OUTSIDE );

+

+	// Stop our custom move sequence

+	GetOuter()->m_iszSceneCustomMoveSeq = NULL_STRING;

+

+	// If we've not been told to enter immediately, we're done

+	if ( m_PassengerIntent == PASSENGER_INTENT_EXIT )

+	{

+		m_PassengerIntent = PASSENGER_INTENT_NONE;

+		Disable();

+	}

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Build our custom interrupt cases for the behavior

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::BuildScheduleTestBits( void )

+{

+	// Always interrupt when we need to get in or out

+	if ( GetPassengerState() == PASSENGER_STATE_OUTSIDE || GetPassengerState() == PASSENGER_STATE_INSIDE )

+	{

+		GetOuter()->SetCustomInterruptCondition( GetClassScheduleIdSpace()->ConditionLocalToGlobal( COND_PASSENGER_ENTERING ) );

+		GetOuter()->SetCustomInterruptCondition( GetClassScheduleIdSpace()->ConditionLocalToGlobal( COND_PASSENGER_EXITING ) );

+		GetOuter()->SetCustomInterruptCondition( GetClassScheduleIdSpace()->ConditionLocalToGlobal( COND_PASSENGER_CANCEL_ENTER ) );

+	}

+

+	BaseClass::BuildScheduleTestBits();

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Dictates whether or not the behavior is active and working

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::CanSelectSchedule( void )

+{

+	return m_bEnabled;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::CanExitVehicle( void )

+{

+	// Vehicle must not be overturned

+	if ( m_hVehicle->IsOverturned() )

+		return false;

+

+	// Vehicle must be at rest

+	Vector vecVelocity;

+	m_hVehicle->GetVelocity( &vecVelocity, NULL );	

+	if ( vecVelocity.LengthSqr() > Square( 8.0f ) )

+		return false;

+

+	return true;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Handles passengers deciding to enter or exit the vehicle

+// Output : int

+//-----------------------------------------------------------------------------

+int CAI_PassengerBehavior::SelectTransitionSchedule( void )

+{

+	// Handle our various states

+	if ( GetPassengerState() == PASSENGER_STATE_INSIDE )

+	{

+		// Exiting schedule

+		if ( HasCondition( COND_PASSENGER_EXITING ) || m_PassengerIntent == PASSENGER_INTENT_EXIT )

+		{

+			if ( CanExitVehicle( ) )

+			{

+				ClearCondition( COND_PASSENGER_EXITING );

+				return SCHED_PASSENGER_EXIT_VEHICLE;

+			}

+		}

+	}

+	else if ( GetPassengerState() == PASSENGER_STATE_ENTERING || GetPassengerState() == PASSENGER_STATE_EXITING )

+	{

+		// The following code attempts to fix up a passenger being interrupted mid-transition

+		Warning( "SelectSchedule() called on transitioning passenger!\n" );

+		ADD_DEBUG_HISTORY( HISTORY_AI_DECISIONS, UTIL_VarArgs( "%s(%d):  SelectSchedule() called on transitioning passenger!\n", GetOuter()->GetDebugName(), GetOuter()->entindex() ) );

+		Assert( 0 );

+

+		// Correct this issue immediately

+		if ( GetPassengerState() == PASSENGER_STATE_EXITING )

+		{

+			// Force them out of the vehicle to where they want to be

+			// The teleport function is overridden for passengers, meaning that they will clean up properly when called to do so

+			GetOuter()->Teleport( &m_vecTargetPosition, &m_vecTargetAngles, NULL );

+		}

+		else if ( GetPassengerState() == PASSENGER_STATE_ENTERING )

+		{

+			// Force them into the proper position

+			GetOuter()->SetLocalOrigin( m_vecTargetPosition );

+			GetOuter()->SetLocalAngles( m_vecTargetAngles ); 

+			FinishEnterVehicle();

+		}

+

+		// Stop playing our animation

+		SetActivity( ACT_RESET );

+	}

+

+	return SCHED_NONE;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Overrides the schedule selection

+// Output : int - Schedule to play

+//-----------------------------------------------------------------------------

+int CAI_PassengerBehavior::SelectSchedule( void )

+{

+	// Protect from this rare occurrence happening

+	if ( m_hVehicle == NULL )

+	{

+		Assert( m_hVehicle != NULL );

+		Warning( "Entity %s running passenger behavior without a valid vehicle!\n", GetName() );

+		

+		Disable();

+		return BaseClass::SelectSchedule();

+	}

+

+	// See if we're transitioning in / out of the vehicle

+	int nSchedule = SelectTransitionSchedule();

+	if ( nSchedule != SCHED_NONE )

+		return nSchedule;

+

+	return SCHED_PASSENGER_IDLE;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+int CAI_PassengerBehavior::SelectFailSchedule( int failedSchedule, int failedTask, AI_TaskFailureCode_t taskFailCode )

+{

+	switch( failedTask )

+	{

+	// For now, just sit back down

+	case TASK_PASSENGER_DETACH_FROM_VEHICLE:

+		return SCHED_PASSENGER_IDLE;

+		break;

+	}

+

+	return BaseClass::SelectFailSchedule( failedSchedule, failedTask, taskFailCode );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Finds a ground position at a given location with some delta up and down to check

+// Input  : &in - position to check at

+//			delta - amount of distance up and down to check

+//			*out - ground position

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::FindGroundAtPosition( const Vector &in, float flUpDelta, float flDownDelta, Vector *out )

+{

+	Vector startPos = in + Vector( 0, 0, flUpDelta );	// Look up by delta

+	Vector endPos   = in - Vector( 0, 0, flDownDelta );	// Look down by delta

+	Vector hullMin  = GetOuter()->GetHullMins();

+	Vector hullMax  = GetOuter()->GetHullMaxs();

+

+	// Ignore ourself and the vehicle we're referencing

+	CTraceFilterVehicleTransition ignoreFilter( m_hVehicle, GetOuter(), COLLISION_GROUP_NONE );

+

+	trace_t tr;

+	UTIL_TraceHull( startPos, endPos, hullMin, hullMax, MASK_NPCSOLID, &ignoreFilter, &tr );

+

+	// Must not have ended up in solid space

+	if ( tr.allsolid )

+	{

+		// Debug

+		if ( passenger_debug_transition.GetBool() )

+		{

+			NDebugOverlay::SweptBox( tr.startpos, tr.endpos, hullMin, hullMax, vec3_angle, 255, 255, 0, 255, 1.0f );

+		}

+		

+		return false;

+	}

+

+	// Must have ended up with feet on the ground

+	if ( tr.DidHitWorld() || ( tr.m_pEnt && tr.m_pEnt->IsStandable() ) )

+	{

+		// Debug

+		if ( passenger_debug_transition.GetBool() )

+		{

+			NDebugOverlay::SweptBox( tr.startpos, tr.endpos, hullMin, hullMax, vec3_angle, 0, 255, 0, 255, 1.0f );

+		}

+		

+		*out = tr.endpos;

+		return true;

+	}

+

+	// Ended up in the air

+	if ( passenger_debug_transition.GetBool() )

+	{

+		NDebugOverlay::SweptBox( tr.startpos, tr.endpos, hullMin, hullMax, vec3_angle, 255, 0, 0, 255, 1.0f );

+	}

+

+	return false;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Attempt to verify that a test position is on the node graph

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::PointIsNavigable( const Vector &vecTargetPos )

+{

+	// Attempt to local move between this point and the nearest node, ignoring anything but world architecture

+	AIMoveTrace_t moveTrace;

+	int iNearestNode = GetOuter()->GetPathfinder()->NearestNodeToPoint( vecTargetPos );

+	if ( iNearestNode != NO_NODE )

+	{

+		// Try a movement trace between the test position and the node

+		GetOuter()->GetMoveProbe()->MoveLimit( NAV_GROUND, 

+			g_pBigAINet->GetNodePosition(GetOuter()->GetHullType(), iNearestNode ), 

+			vecTargetPos, 

+			MASK_SOLID_BRUSHONLY, 

+			NULL, 

+			0, 

+			&moveTrace );

+		

+		// See if we got close enough to call it arrived

+		if ( ( moveTrace.vEndPosition - vecTargetPos ).LengthSqr() < Square( GetHullWidth() ) &&

+			GetOuter()->GetMoveProbe()->CheckStandPosition( moveTrace.vEndPosition, MASK_SOLID_BRUSHONLY ) )

+		{

+			// NDebugOverlay::HorzArrow( vecTargetPos, moveTrace.vEndPosition, 8.0f, 255, 0, 0, 16, true, 4.0f );

+			// NDebugOverlay::HorzArrow( vecTargetPos, g_pBigAINet->GetNodePosition(GetOuter()->GetHullType(), iNearestNode ), 8.0f, 255, 255, 0, 16, true, 4.0f );

+			return true;

+		}

+	}

+

+	return false;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Gets the exit point for the passenger (on the ground)

+// Input  : &vecOut - position the entity should be at when finished exiting

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::GetExitPoint( int nSequence, Vector *vecExitPoint, QAngle *vecExitAngles )

+{

+	bool bSucceeded = true;

+

+	// Get the delta to the final position as will be dictated by this animation's auto movement

+	Vector vecDeltaPos;

+	QAngle vecDeltaAngles;

+	GetOuter()->GetSequenceMovement( nSequence, 0.0f, 1.0f, vecDeltaPos, vecDeltaAngles );

+

+	// Rotate the delta position by our starting angles

+	Vector vecRotPos = vecDeltaPos;

+	VectorRotate( vecRotPos, GetOuter()->GetAbsAngles(), vecDeltaPos );

+

+	if ( vecExitPoint != NULL )

+	{

+		float flDownDelta = 64.0f;

+		float flUpDelta = 16.0f;

+		Vector vecGroundPos;

+		

+		bool bFoundGround = FindGroundAtPosition( GetOuter()->GetAbsOrigin() + vecDeltaPos, flUpDelta, flDownDelta, &vecGroundPos );

+		if ( bFoundGround )

+		{

+			if ( PointIsNavigable( vecGroundPos ) == false )

+			{

+				bSucceeded = false;

+			}

+		}

+		else

+		{

+			bSucceeded = false;

+		}

+

+		*vecExitPoint = vecGroundPos;

+	}

+

+	if ( vecExitAngles != NULL )

+	{

+		QAngle newAngles = GetOuter()->GetAbsAngles() + vecDeltaAngles;

+		newAngles.x = UTIL_AngleMod( newAngles.x );

+		newAngles.y = UTIL_AngleMod( newAngles.y );

+		newAngles.z = UTIL_AngleMod( newAngles.z );

+		*vecExitAngles = newAngles;

+	}

+

+	return bSucceeded;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Reserve our entry point

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::ReserveEntryPoint( VehicleSeatQuery_e eSeatSearchType )

+{

+	// FIXME: Move all this logic into the NPC_EnterVehicle function?

+	// Find any seat to get into

+	int nSeatID = m_hVehicle->GetServerVehicle()->NPC_GetAvailableSeat( GetOuter(), GetRoleName(), eSeatSearchType );

+	if ( nSeatID != VEHICLE_SEAT_INVALID )

+		return m_hVehicle->NPC_AddPassenger( GetOuter(), GetRoleName(), nSeatID );

+

+	return false;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Determines whether the NPC can move between a start and end position of a transition

+// Input  : &vecStartPos - start position

+//			&vecEndPos - end position

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::IsValidTransitionPoint( const Vector &vecStartPos, const Vector &vecEndPos )

+{

+	// Now sweep a hull through space to see if we can validly exit there

+	Vector vecHullMins = GetOuter()->GetHullMins() + Vector( 0, 0, GetOuter()->StepHeight()*2.0f );

+	Vector vecHullMaxs = GetOuter()->GetHullMaxs() - Vector( 0, 0, GetOuter()->StepHeight() );

+

+	trace_t tr;

+	CTraceFilterVehicleTransition skipFilter( GetOuter(), m_hVehicle, COLLISION_GROUP_NONE );

+	UTIL_TraceHull( vecStartPos, vecEndPos, vecHullMins, vecHullMaxs, MASK_NPCSOLID, &skipFilter, &tr );

+

+	// If we're blocked, we can't get out there

+	if ( tr.fraction < 1.0f || tr.allsolid )

+	{

+		if ( passenger_debug_transition.GetBool() )

+		{

+			NDebugOverlay::SweptBox( vecStartPos, vecEndPos, vecHullMins, vecHullMaxs, vec3_angle, 255, 0, 0, 64, 2.0f );

+		}

+		return false;

+	}

+	

+	return true;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Find the proper sequence to use (weighted by priority or distance from current position)

+//			to enter the vehicle.

+// Input  : bNearest - Use distance as the criteria for a "best" sequence.  Otherwise the order of the

+//					   seats is their priority.

+// Output : int - sequence index

+//-----------------------------------------------------------------------------

+int CAI_PassengerBehavior::FindEntrySequence( bool bNearest /*= false*/ )

+{

+	// Get a list of all our animations

+	const PassengerSeatAnims_t *pEntryAnims = m_hVehicle->GetServerVehicle()->NPC_GetPassengerSeatAnims( GetOuter(), PASSENGER_SEAT_ENTRY );

+	if ( pEntryAnims == NULL )

+		return -1;

+

+	// Get the ultimate position we'll end up at

+	Vector	vecStartPos, vecEndPos;

+	if ( m_hVehicle->GetServerVehicle()->NPC_GetPassengerSeatPosition( GetOuter(), &vecEndPos, NULL ) == false )

+		return -1;

+

+	const CPassengerSeatTransition *pTransition;

+	Vector	vecSeatDir;

+	float	flNearestDist = FLT_MAX;

+	float	flSeatDist;

+	int		nNearestSequence = -1;

+	int		nSequence;

+

+	// Test each animation (sorted by priority) for the best match

+	for ( int i = 0; i < pEntryAnims->Count(); i++ )

+	{

+		// Find the activity for this animation name

+		pTransition = &pEntryAnims->Element(i);

+		nSequence = GetOuter()->LookupSequence( STRING( pTransition->GetAnimationName() ) );

+		if ( nSequence == -1 )

+			continue;

+

+		// Test this entry for validity

+		if ( GetEntryPoint( nSequence, &vecStartPos ) == false )

+			continue;

+

+		// Check to see if we can use this

+		if ( IsValidTransitionPoint( vecStartPos, vecEndPos ) )

+		{

+			// If we're just looking for the first, we're done

+			if ( bNearest == false )

+				return nSequence;

+

+			// Otherwise distance is the deciding factor

+			vecSeatDir = ( vecStartPos - GetOuter()->GetAbsOrigin() );

+			flSeatDist = VectorNormalize( vecSeatDir );

+

+			// Closer, take it

+			if ( flSeatDist < flNearestDist )

+			{

+				flNearestDist = flSeatDist;

+				nNearestSequence = nSequence;

+			}

+		}

+			

+	}

+

+	return nNearestSequence;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+int CAI_PassengerBehavior::FindExitSequence( void )

+{

+	// Get a list of all our animations

+	const PassengerSeatAnims_t *pExitAnims = m_hVehicle->GetServerVehicle()->NPC_GetPassengerSeatAnims( GetOuter(), PASSENGER_SEAT_EXIT );

+	if ( pExitAnims == NULL )

+		return -1;

+

+	// Get the ultimate position we'll end up at

+	Vector	vecStartPos, vecEndPos;

+	if ( m_hVehicle->GetServerVehicle()->NPC_GetPassengerSeatPosition( GetOuter(), &vecStartPos, NULL ) == false )

+		return -1;

+

+	// Test each animation (sorted by priority) for the best match

+	for ( int i = 0; i < pExitAnims->Count(); i++ )

+	{

+		// Find the activity for this animation name

+		int nSequence = GetOuter()->LookupSequence( STRING( pExitAnims->Element(i).GetAnimationName() ) );

+		if ( nSequence == -1 )

+			continue;

+

+		// Test this entry for validity

+		if ( GetExitPoint( nSequence, &vecEndPos ) == false )

+			continue;

+

+		// Check to see if we can use this

+		if ( IsValidTransitionPoint( vecStartPos, vecEndPos ) )

+			return nSequence;

+	}

+

+	return -1;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Reserve our exit point so nothing moves into it while we're moving

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::ReserveExitPoint( void )

+{

+	// Cannot exit while we're upside down

+	// FIXME: This is probably redundant!

+	if ( m_hVehicle->IsOverturned() )

+		return false;

+

+	// Find the exit activity to use

+	int nSequence = FindExitSequence();

+	if ( nSequence == -1 )

+		return false;

+

+	// Get the exit position

+	Vector vecGroundPos;

+	if ( GetExitPoint( nSequence, &vecGroundPos, &m_vecTargetAngles ) == false )

+		return false;

+

+	// We have to do this specially because the activities are not named

+	SetTransitionSequence( nSequence );

+

+	// Reserve this space

+	Vector hullMin = GetOuter()->GetHullMins();

+	Vector hullMax = GetOuter()->GetHullMaxs();

+	m_hBlocker = CEntityBlocker::Create( vecGroundPos, hullMin, hullMax, GetOuter(), true );

+

+	// Save this destination position so we can interpolate towards it

+	m_vecTargetPosition = vecGroundPos;

+	

+	// Pitch and roll must be zero when we finish!

+	m_vecTargetAngles.x = m_vecTargetAngles.z = 0.0f;

+

+	if ( passenger_debug_transition.GetBool() )

+	{

+		Vector vecForward;

+		AngleVectors( m_vecTargetAngles, &vecForward, NULL, NULL );

+		Vector vecArrowEnd = m_vecTargetPosition + ( vecForward * 64.0f );

+		NDebugOverlay::HorzArrow( m_vecTargetPosition, vecArrowEnd, 8.0f, 255, 255, 0, 64, true, 4.0f );

+	}

+

+	return true;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Find the exact point we'd like to start our animation from to enter

+//			the vehicle.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::GetEntryPoint( int nSequence, Vector *vecEntryPoint, QAngle *vecEntryAngles )

+{

+	bool bSucceeded = true;

+

+	// Get the delta to the final position as will be dictated by this animation's auto movement

+	Vector vecDeltaPos;

+	QAngle vecDeltaAngles;

+	GetOuter()->GetSequenceMovement( nSequence, 1.0f, 0.0f, vecDeltaPos, vecDeltaAngles );

+

+	// Get the final position we're trying to end up at

+	Vector vecTargetPos;

+	QAngle vecTargetAngles;

+	GetEntryTarget( &vecTargetPos, &vecTargetAngles );

+

+	// Rotate it to match

+	Vector vecPreDelta = vecDeltaPos;

+	VectorRotate( vecPreDelta, vecTargetAngles, vecDeltaPos );

+

+	// Offset this into the proper worldspace position

+	vecTargetPos = vecTargetPos + vecDeltaPos;

+

+	// Output the position, if requested

+	if ( vecEntryPoint != NULL )

+	{

+		m_hVehicle->EntityToWorldSpace( vecTargetPos, vecEntryPoint );

+

+		// Trace down to the ground to see where we'll stand

+		Vector vecGroundPos;

+		if ( FindGroundAtPosition( (*vecEntryPoint), 16.0f, 64.0f, &vecGroundPos ) == false )

+		{

+			// We failed

+			if ( passenger_debug_transition.GetBool() )

+			{

+				NDebugOverlay::SweptBox( (*vecEntryPoint), vecGroundPos, GetOuter()->GetHullMins(), GetOuter()->GetHullMaxs(), vec3_angle, 255, 0, 0, 64, 2.0f );

+			}

+

+			// The floor could not be found

+			bSucceeded = false;

+		}

+

+		// Take this position

+		*vecEntryPoint = vecGroundPos;

+	}

+

+	// Output the angles, if requested

+	if ( vecEntryAngles != NULL )

+	{

+		// Add our delta angles to find what angles to start at

+		*vecEntryAngles = vecTargetAngles;

+		vecEntryAngles->y = UTIL_AngleMod( vecTargetAngles.y + vecDeltaAngles.y );

+

+		//Transform those angles to worldspace

+		matrix3x4_t angToParent, angToWorld;

+		AngleMatrix( (*vecEntryAngles), angToParent );

+		ConcatTransforms( m_hVehicle->EntityToWorldTransform(), angToParent, angToWorld );

+		MatrixAngles( angToWorld, (*vecEntryAngles) );

+	}

+

+	// Debug info

+	if ( passenger_debug_transition.GetBool() && vecEntryPoint && vecEntryAngles )

+	{

+		NDebugOverlay::Axis( *vecEntryPoint, vecTargetAngles, 16, true, 4.0f );

+		NDebugOverlay::Cross3D( *vecEntryPoint, 4, 255, 255, 0, true, 4.0f );

+		

+		if ( vecEntryAngles != NULL )

+		{

+			Vector vecForward;

+			AngleVectors( (*vecEntryAngles), &vecForward, NULL, NULL );

+			Vector vecArrowEnd = (*vecEntryPoint ) + ( vecForward * 64.0f );

+			NDebugOverlay::HorzArrow( (*vecEntryPoint), vecArrowEnd, 8.0f, 0, 255, 0, 64, true, 4.0f );

+		}

+	}

+

+	return bSucceeded;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Do the low-level work to detach us from our vehicle

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::DetachFromVehicle( void )

+{

+	// Detach from the parent

+	GetOuter()->SetParent( NULL );

+	GetOuter()->SetMoveType( MOVETYPE_STEP );

+	GetOuter()->AddFlag( FL_FLY );

+	GetOuter()->SetGroundEntity( NULL );

+	GetOuter()->SetCollisionGroup( COLLISION_GROUP_NPC );

+	m_hVehicle->RemovePhysicsChild( GetOuter() );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::AttachToVehicle( void )

+{

+	// Parent to the vehicle

+	GetOuter()->ClearForceCrouch();

+	GetOuter()->SetParent( m_hVehicle );

+	GetOuter()->AddFlag( FL_FLY );

+	GetOuter()->SetGroundEntity( NULL );

+	GetOuter()->SetCollisionGroup( COLLISION_GROUP_IN_VEHICLE );

+

+	// Turn off physical interactions while we're in the vehicle

+	IPhysicsObject *pPhysObj = GetOuter()->VPhysicsGetObject();

+	if ( pPhysObj != NULL )

+	{

+		pPhysObj->EnableCollisions( false );

+	}

+

+	// Set our destination target

+	GetEntryTarget( &m_vecTargetPosition, &m_vecTargetAngles );

+

+	// Get physics messages from our attached physics object

+	m_hVehicle->AddPhysicsChild( GetOuter() );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Handle task starting

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::StartTask( const Task_t *pTask )

+{

+	switch ( pTask->iTask )

+	{

+	case TASK_PASSENGER_ENTER_VEHICLE:

+		{

+			// You must have set your entrance animation before this point!

+			Assert( m_nTransitionSequence != -1 );

+

+			// Start us playing the correct sequence

+			GetOuter()->SetIdealActivity( ACT_SCRIPT_CUSTOM_MOVE );

+			SetPassengerState( PASSENGER_STATE_ENTERING );

+

+			// Overlaying any gestures will mess us up, so don't allow it

+			GetOuter()->RemoveAllGestures();

+		}

+		break;

+

+	case TASK_PASSENGER_EXIT_VEHICLE:

+		{

+			// You must have set your entrance animation before this point!

+			Assert( m_nTransitionSequence != -1 );

+

+			// Start us playing the correct sequence

+			GetOuter()->SetIdealActivity( ACT_SCRIPT_CUSTOM_MOVE );

+			

+			// Overlaying any gestures will mess us up, so don't allow it

+			GetOuter()->RemoveAllGestures();

+		}

+		break;

+

+	case TASK_PASSENGER_ATTACH_TO_VEHICLE:

+		{

+			AttachToVehicle();

+			TaskComplete();

+		}

+		break;

+

+	case TASK_PASSENGER_DETACH_FROM_VEHICLE:

+		{

+			// Place an entity blocker where we're going to go

+			if ( ReserveExitPoint() == false )

+			{

+				OnExitVehicleFailed();

+				TaskFail("Failed to find valid exit point\n");

+				return;

+			}

+

+			// Physically detach from the vehicle

+			DetachFromVehicle();

+

+			// Mark that we're now disembarking

+			SetPassengerState( PASSENGER_STATE_EXITING );

+

+			TaskComplete();

+		}

+		break;

+

+	case TASK_PASSENGER_SET_IDEAL_ENTRY_YAW:

+		{

+			// Get the ideal facing to enter the vehicle

+			QAngle vecEntryAngles;

+			GetEntryPoint( m_nTransitionSequence, NULL, &vecEntryAngles );

+			GetOuter()->GetMotor()->SetIdealYaw( vecEntryAngles.y );

+			

+			TaskComplete();

+			return;

+		}	

+		break;

+

+	default:

+		BaseClass::StartTask( pTask );

+		break;

+	}

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Handle task running

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::RunTask( const Task_t *pTask )

+{

+	switch ( pTask->iTask )

+	{

+	case TASK_PASSENGER_ENTER_VEHICLE:

+		{	

+			// Correct for angular/spatial deviation

+			Assert( GetSequence() == m_nTransitionSequence );

+			if ( GetSequence() != m_nTransitionSequence )

+			{

+				Warning("Corrected entrance animation on vehicle enter!\n");

+				GetOuter()->SetIdealActivity( ACT_SCRIPT_CUSTOM_MOVE );

+				GetOuter()->GetNavigator()->ClearGoal();

+				SetTransitionSequence( m_nTransitionSequence );

+			}

+			

+			bool corrected = DoTransitionMovement();

+

+			// We must be done with the animation and in the correct position

+			if ( corrected == false )

+			{

+				FinishEnterVehicle();

+				TaskComplete();

+			}

+		}

+		break;

+

+	case TASK_PASSENGER_EXIT_VEHICLE:

+		{

+			// Correct for angular/spatial deviation

+			Assert( GetSequence() == m_nTransitionSequence );

+			if ( GetSequence() != m_nTransitionSequence )

+			{

+				Warning("Corrected exit animation on vehicle exit!\n");

+				GetOuter()->SetIdealActivity( ACT_SCRIPT_CUSTOM_MOVE );

+				GetOuter()->GetNavigator()->ClearGoal();

+				SetTransitionSequence( m_nTransitionSequence );

+			}

+

+			// Correct for angular/spatial deviation

+			bool corrected = DoTransitionMovement();

+

+			// We must be done with the animation and in the correct position

+			if ( corrected == false )

+			{

+				FinishExitVehicle();

+				TaskComplete();

+			}

+		}

+		break;

+

+	default:

+		BaseClass::RunTask( pTask );

+		break;

+	}

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Find the blend amounts for position and angles, given a point in 

+//			time within a sequence

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::GetSequenceBlendAmount( float flCycle, float *posBlend, float *angBlend )

+{

+	// Find positional blend, if requested

+	if ( posBlend != NULL )

+	{

+		float flFrac = RemapValClamped( flCycle, m_flOriginStartFrame, m_flOriginEndFrame, 0.0f, 1.0f );

+		(*posBlend) = SimpleSpline( flFrac );

+	}

+

+	// Find angular blend, if requested

+	if ( angBlend != NULL )

+	{

+		float flFrac = RemapValClamped( flCycle, m_flAnglesStartFrame, m_flAnglesEndFrame, 0.0f, 1.0f );

+		(*angBlend) = SimpleSpline( flFrac );		

+	}

+

+	return true;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Returns the target destination for the entry animation

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::GetEntryTarget( Vector *vecOrigin, QAngle *vecAngles )

+{

+	// Get the ultimate position we'll end up at

+	m_hVehicle->GetServerVehicle()->NPC_GetPassengerSeatPositionLocal( GetOuter(), vecOrigin, vecAngles );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Returns the ideal position to be in to end up at the target at the

+//			end of the animation.

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::GetTransitionAnimationIdeal( float flCycle, const Vector &vecTargetPos, const QAngle &vecTargetAngles, Vector *idealOrigin, QAngle *idealAngles )

+{

+	// Get the position in time working backwards from our goal

+	Vector vecDeltaPos;

+	QAngle vecDeltaAngles;

+	GetOuter()->GetSequenceMovement( GetSequence(), 1.0f, flCycle, vecDeltaPos, vecDeltaAngles );

+

+	// Rotate the delta by our local angles

+	Vector vecPreDelta = vecDeltaPos;

+	VectorRotate( vecPreDelta, vecTargetAngles, vecDeltaPos );

+

+	// Ideal origin

+	if ( idealOrigin != NULL )

+	{

+		*idealOrigin = ( vecTargetPos + vecDeltaPos );

+	}

+

+	// Ideal angles

+	if ( idealAngles != NULL )

+	{

+		(*idealAngles).x = anglemod( vecTargetAngles.x + vecDeltaAngles.x );

+		(*idealAngles).y = anglemod( vecTargetAngles.y + vecDeltaAngles.y );

+		(*idealAngles).z = anglemod( vecTargetAngles.z + vecDeltaAngles.z );

+	}

+}

+

+//-----------------------------------------------------------------------------

+//	FIXME:	This is basically a complete duplication of GetIntervalMovement

+//			which doesn't remove the x and z components of the angles.  This

+//			should be consolidated to not replicate so much code! -- jdw

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::LocalIntervalMovement( float flInterval, bool &bMoveSeqFinished, Vector &newPosition, QAngle &newAngles )

+{

+	CStudioHdr *pstudiohdr = GetOuter()->GetModelPtr();

+	if ( pstudiohdr == NULL )

+		return false;

+

+	// Get our next cycle point

+	float flNextCycle = GetNextCycleForInterval( GetSequence(), flInterval );

+

+	// Fix-up loops

+	if ( ( GetOuter()->SequenceLoops() == false ) && flNextCycle > 1.0f )

+	{

+		flInterval = GetOuter()->GetCycle() / ( GetOuter()->GetSequenceCycleRate( GetSequence() ) * GetOuter()->GetPlaybackRate() );

+		flNextCycle = 1.0f;

+		bMoveSeqFinished = true;

+	}

+	else

+	{

+		bMoveSeqFinished = false;

+	}

+

+	Vector deltaPos;

+	QAngle deltaAngles;

+

+	// Find the delta position and delta angles for this sequence

+	if ( Studio_SeqMovement( pstudiohdr, GetOuter()->GetSequence(), GetOuter()->GetCycle(), flNextCycle, GetOuter()->GetPoseParameterArray(), deltaPos, deltaAngles ))

+	{

+		Vector vecPreDelta = deltaPos;

+		VectorRotate( vecPreDelta, GetOuter()->GetLocalAngles(), deltaPos );

+		

+		newPosition = GetLocalOrigin() + deltaPos;

+		newAngles = GetLocalAngles() + deltaAngles;

+

+		return true;

+	}

+	else

+	{

+		newPosition = GetLocalOrigin();

+		newAngles = GetLocalAngles();

+

+		return false;

+	}

+

+	return false;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Get the next cycle point in a sequence for a given interval

+//-----------------------------------------------------------------------------

+float CAI_PassengerBehavior::GetNextCycleForInterval( int nSequence, float flInterval )

+{

+	return GetOuter()->GetCycle() + flInterval * GetOuter()->GetSequenceCycleRate( GetSequence() ) * GetOuter()->GetPlaybackRate();

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Draw debug information for the transitional movement

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::DrawDebugTransitionInfo( const Vector &vecIdealPos, const QAngle &vecIdealAngles, const Vector &vecAnimPos, const QAngle &vecAnimAngles )

+{

+	// Debug info

+	if ( GetPassengerState() == PASSENGER_STATE_ENTERING )

+	{	

+		// Green - Ideal location

+		Vector foo;

+		m_hVehicle->EntityToWorldSpace( vecIdealPos, &foo );

+		NDebugOverlay::Cross3D( foo, 2, 0, 255, 0, true, 0.1f );

+		NDebugOverlay::Axis( foo, vecIdealAngles, 8, true, 0.1f );

+

+		// Blue - Actual location

+		m_hVehicle->EntityToWorldSpace( vecAnimPos, &foo );

+		NDebugOverlay::Cross3D( foo, 2, 0, 0, 255, true, 0.1f );

+		NDebugOverlay::Axis( foo, vecAnimAngles, 8, true, 0.1f );

+	}

+	else

+	{

+		// Green - Ideal location

+		NDebugOverlay::Cross3D( vecIdealPos, 4, 0, 255, 0, true, 0.1f );

+		NDebugOverlay::Axis( vecIdealPos, vecIdealAngles, 8, true, 0.1f );

+

+		// Blue - Actual location

+		NDebugOverlay::Cross3D( vecAnimPos, 2, 0, 0, 255, true, 0.1f );

+		NDebugOverlay::Axis( vecAnimPos, vecAnimAngles, 8, true, 0.1f );

+	}

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Local movement to enter or exit the vehicle

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::DoTransitionMovement( void )

+{

+	// Get our animation's extrapolated end position

+	Vector	vecAnimPos;

+	QAngle	vecAnimAngles;

+	float	flInterval = GetOuter()->GetAnimTimeInterval();

+	bool	bSequenceFinished;

+

+	// Get the position we're moving to for this frame with our animation's motion

+	if ( LocalIntervalMovement( flInterval, bSequenceFinished, vecAnimPos, vecAnimAngles ) )

+	{	

+		// Get the position we'd ideally be in

+		Vector vecIdealPos;

+		QAngle vecIdealAngles;

+		float flNextCycle = GetNextCycleForInterval( GetOuter()->GetSequence(), flInterval );

+		flNextCycle = clamp( flNextCycle, 0.0f, 1.0f );

+		GetTransitionAnimationIdeal( flNextCycle, m_vecTargetPosition, m_vecTargetAngles, &vecIdealPos, &vecIdealAngles );

+

+		// Get the amount of error to blend out

+		float flPosBlend = 1.0f;

+		float flAngBlend = 1.0f;

+		GetSequenceBlendAmount( flNextCycle, &flPosBlend, &flAngBlend );

+

+		// Find the error between our position and our ideal

+		Vector vecDelta = ( vecIdealPos - vecAnimPos ) * flPosBlend;

+		

+		QAngle vecDeltaAngles;

+		vecDeltaAngles.x = AngleDiff( vecIdealAngles.x, vecAnimAngles.x ) * flAngBlend;

+		vecDeltaAngles.y = AngleDiff( vecIdealAngles.y, vecAnimAngles.y ) * flAngBlend;

+		vecDeltaAngles.z = AngleDiff( vecIdealAngles.z, vecAnimAngles.z ) * flAngBlend;

+

+		// Factor in the error

+		GetOuter()->SetLocalOrigin( vecAnimPos + vecDelta );

+		GetOuter()->SetLocalAngles( vecAnimAngles + vecDeltaAngles );

+

+		// Draw our debug information

+		if ( passenger_debug_transition.GetBool() )

+		{

+			DrawDebugTransitionInfo( vecIdealPos, vecIdealAngles, vecAnimPos, vecAnimAngles );

+		}

+

+		// We're done moving

+		if ( bSequenceFinished )

+			return false;

+

+		// We're still correcting out the error

+		return true;

+	}

+

+	// There was no movement in the animation

+	return false;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Translate normal schedules into vehicle schedules

+//-----------------------------------------------------------------------------

+int CAI_PassengerBehavior::TranslateSchedule( int scheduleType )

+{

+	if ( GetPassengerState() == PASSENGER_STATE_INSIDE )

+	{

+		// Always be seated when riding in the car!

+		if ( scheduleType == SCHED_IDLE_STAND )

+			return SCHED_PASSENGER_IDLE;

+	}

+

+	return BaseClass::TranslateSchedule( scheduleType );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Returns the velocity of the vehicle with respect to its orientation

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::GetLocalVehicleVelocity( Vector *pOut  )

+{

+	Vector velocity;

+	m_hVehicle->GetVelocity( &velocity, NULL );

+	m_hVehicle->WorldToEntitySpace( m_hVehicle->GetAbsOrigin() + velocity, pOut );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Gather conditions we can comment on or react to while riding in the vehicle

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::GatherVehicleStateConditions( void )

+{

+	// Must have a vehicle to bother with this

+	if ( m_hVehicle == NULL )

+		return;

+

+	// Clear out transient conditions

+	ClearCondition( COND_PASSENGER_HARD_IMPACT );

+	ClearCondition( COND_PASSENGER_ERRATIC_DRIVING );

+	ClearCondition( COND_PASSENGER_JOSTLE_SMALL );

+	ClearCondition( COND_PASSENGER_VEHICLE_STARTED );

+	ClearCondition( COND_PASSENGER_VEHICLE_STOPPED );

+	ClearCondition( COND_PASSENGER_PLAYER_ENTERED_VEHICLE );

+	ClearCondition( COND_PASSENGER_PLAYER_EXITED_VEHICLE );

+

+	CBasePlayer *pPlayer = AI_GetSinglePlayer();

+	if ( pPlayer )

+	{

+		if ( pPlayer->IsInAVehicle() && pPlayer->GetVehicle() == m_hVehicle->GetServerVehicle() )

+		{

+			if ( m_vehicleState.m_bPlayerInVehicle == false )

+			{

+				SetCondition( COND_PASSENGER_PLAYER_ENTERED_VEHICLE );

+				m_vehicleState.m_bPlayerInVehicle = true;

+			}

+		}

+		else

+		{

+			if ( m_vehicleState.m_bPlayerInVehicle )

+			{

+				SetCondition( COND_PASSENGER_PLAYER_EXITED_VEHICLE );

+				m_vehicleState.m_bPlayerInVehicle = false;

+			}

+		}

+	}

+

+	// Get the vehicle's boost state

+	if ( m_hVehicle->m_nBoostTimeLeft < 100.0f )

+	{

+		if ( m_vehicleState.m_bWasBoosting == false )

+		{

+			m_vehicleState.m_bWasBoosting = true;

+		}

+	}

+	else

+	{

+		m_vehicleState.m_bWasBoosting = false;

+	}

+

+	// Detect being overturned

+	if ( m_hVehicle->IsOverturned() )

+	{

+		SetCondition( COND_PASSENGER_OVERTURNED );

+

+		if ( m_vehicleState.m_bWasOverturned == false )

+		{

+			m_vehicleState.m_bWasOverturned = true;

+		}

+	}

+	else

+	{

+		ClearCondition( COND_PASSENGER_OVERTURNED ); 

+		m_vehicleState.m_bWasOverturned = false;

+	}

+

+	// Get our local velocity

+	Vector	localVelocity;

+	GetLocalVehicleVelocity( &localVelocity );

+

+	Vector	deltaVelocity = ( localVelocity - m_vehicleState.m_vecLastLocalVelocity );

+

+	// Detect a sudden stop!

+	if ( deltaVelocity.y < passenger_impact_response_threshold.GetFloat() )

+	{

+		SetCondition( COND_PASSENGER_HARD_IMPACT );

+	}

+	else if ( fabs( deltaVelocity.x ) > 200.0f || fabs( deltaVelocity.z ) > 75.0f )

+	{

+		// The X axis represents lateral movement and the Z axis represents vertical movement{

+   		SetCondition( COND_PASSENGER_ERRATIC_DRIVING );

+	} 

+	else if ( fabs( deltaVelocity.x ) > 50.0f || fabs( deltaVelocity.z ) > 25.0f )

+	{

+		// Lightly jostled

+      	SetCondition( COND_PASSENGER_JOSTLE_SMALL );

+	}

+

+	// Get our speed

+	float flSpeedSqr = localVelocity.LengthSqr();

+

+	// See if we've crossed over the threshold between movement to stillness

+	if ( m_vehicleState.m_flLastSpeedSqr > STOPPED_VELOCITY_THRESHOLD_SQR && flSpeedSqr < STOPPED_VELOCITY_THRESHOLD_SQR )

+	{

+		SetCondition( COND_PASSENGER_VEHICLE_STOPPED );

+	}

+	else if ( m_vehicleState.m_flLastSpeedSqr < STARTED_VELOCITY_THRESHOLD_SQR && flSpeedSqr > STARTED_VELOCITY_THRESHOLD_SQR )

+	{

+		// See if we've crossed over the threshold between stillness to movement

+		SetCondition( COND_PASSENGER_VEHICLE_STARTED );

+	}

+

+	// Save this as our last speed

+	m_vehicleState.m_flLastSpeedSqr = flSpeedSqr;

+

+	// Find our delta velocity from the last frame

+	m_vehicleState.m_vecDeltaVelocity = ( localVelocity - m_vehicleState.m_vecLastLocalVelocity );

+	m_vehicleState.m_vecLastLocalVelocity = localVelocity;

+	

+	// Get our angular velocity

+	Vector vecVelocity;

+	AngularImpulse angVelocty;

+	m_hVehicle->GetVelocity( &vecVelocity, &angVelocty );

+	QAngle angVel( angVelocty.x, angVelocty.y, angVelocty.z );

+	

+	// Blend this into the old values

+	m_vehicleState.m_vecLastAngles = ( m_vehicleState.m_vecLastAngles * 0.2f ) + ( angVel * 0.8f );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Do some pre-schedule clean-up

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::PrescheduleThink( void )

+{

+	BaseClass::PrescheduleThink();

+

+	// If we're outside the vehicle, we need to turn this behavior off immediately

+	if ( GetPassengerState() == PASSENGER_STATE_OUTSIDE && HasCondition( COND_PASSENGER_CANCEL_ENTER ) )

+	{

+		// Clear out our passenger intent

+		m_PassengerIntent = PASSENGER_INTENT_NONE;

+		ClearCondition( COND_PASSENGER_CANCEL_ENTER );

+

+		// Stop pathfinding

+		GetOuter()->GetNavigator()->ClearGoal();

+

+		// We're outside and have no intent to enter, so we're done

+		Disable();

+

+		// This must be stomped to cause our behavior to relinquish control

+		GetOuter()->ClearSchedule("Passenger enter canceled");

+	}

+

+#ifdef DEBUG

+	if ( GetPassengerState() == PASSENGER_STATE_INSIDE )

+	{

+		Vector vecSeatOrigin;

+		QAngle vecSeatAngles;

+		if ( m_hVehicle && m_hVehicle->GetServerVehicle()->NPC_GetPassengerSeatPositionLocal( GetOuter(), &vecSeatOrigin, &vecSeatAngles ) )

+		{

+			if ( ( GetLocalOrigin() - vecSeatOrigin ).LengthSqr() > Square( 0.1f ) )

+			{

+				Warning( "Passenger has strayed from seat position!\n" );

+				// GetOuter()->SetLocalOrigin( vecSeatOrigin );

+				// GetOuter()->SetLocalAngles( vecSeatAngles );

+			}

+		}

+		else

+		{

+			Warning( "Passenger is in vehicle without a valid seat position! -- EJECTED\n" );

+			GetOuter()->SetParent( NULL );

+			Disable();

+

+			return;

+		}

+	}

+#endif // DEBUG

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Gather conditions for our use in making decisions

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::GatherConditions( void )

+{

+	if ( IsEnabled() == false )

+		return BaseClass::GatherConditions();

+

+	// Sense the state of the car

+	GatherVehicleStateConditions();

+

+	BaseClass::GatherConditions();

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::ModifyOrAppendCriteria( AI_CriteriaSet& criteriaSet )

+{

+	if ( m_hVehicle == NULL )

+		return;

+

+	// Mark whether we're overturned or not

+	bool bOverturned = m_hVehicle->IsOverturned();

+	criteriaSet.AppendCriteria( "vehicle_overturned", bOverturned ? "1" : "0" );

+

+	// Denote whether we're in the vehicle or not

+	bool bInsideVehicle = ( GetPassengerState() == PASSENGER_STATE_INSIDE );

+	criteriaSet.AppendCriteria( "vehicle_inside", bInsideVehicle ? "1" : "0" );

+

+	// Note what angle we're at (extreme or normal)

+	Vector vecUp( 0.0f, 0.0f, 1.0f );

+	Vector vecVehicleUp;

+	m_hVehicle->GetVectors( NULL, NULL, &vecVehicleUp );

+

+	float flVehicleUp = DotProduct( vecVehicleUp, vecUp );

+	criteriaSet.AppendCriteria( "vehicle_tilt", UTIL_VarArgs( "%.2f", flVehicleUp ) );

+

+	// Set the vehicle's speed (necessary for certain types of movement judgments)

+	float flVehicleSpeed = sqrt( m_vehicleState.m_flLastSpeedSqr );

+	criteriaSet.AppendCriteria( "vehicle_speed", UTIL_VarArgs( "%f", flVehicleSpeed  ) );

+

+	// Whether or not the passenger is currently able to enter the vehicle (only accounts for locking really)

+	bool bCanExitVehicle = ( m_hVehicle->NPC_CanExitVehicle( GetOuter(), true ) );

+	criteriaSet.AppendCriteria( "vehicle_can_exit", bCanExitVehicle ? "1" : "0" );

+

+	// Whether or not the passenger is currently able to exit the vehicle (only accounts for locking really)

+	bool bCanEnterVehicle = ( m_hVehicle->NPC_CanEnterVehicle( GetOuter(), true ) );

+	criteriaSet.AppendCriteria( "vehicle_can_enter", bCanEnterVehicle ? "1" : "0" );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Cache off our frame numbers from the sequence keyvalue blocks

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::CacheBlendTargets( void )

+{

+	// Get the keyvalues for this sequence

+	KeyValues *seqValues = GetOuter()->GetSequenceKeyValues( m_nTransitionSequence );

+	if ( seqValues == NULL )

+	{

+		Assert( 0 );

+		return;

+	}

+

+	// Get the entry/exit subkeys

+	KeyValues *blendValues = seqValues->FindKey( "entryexit_blend" );

+	if ( blendValues == NULL )

+	{

+		Assert( 0 );

+		return;

+	}

+

+	// Find our frame range on this sequence

+	int nMaxFrames = Studio_MaxFrame( GetOuter()->GetModelPtr(), m_nTransitionSequence, GetOuter()->GetPoseParameterArray() );

+

+	// Find a key by this name

+	KeyValues *subKeys = blendValues->FindKey( ORIGIN_KEYNAME );

+	if ( subKeys )

+	{

+		// Retrieve our frame numbers

+		m_flOriginStartFrame = subKeys->GetFloat( "startframe", 0.0f );

+		m_flOriginEndFrame = subKeys->GetFloat( "endframe", nMaxFrames );

+

+		// Convert to normalized values

+		m_flOriginStartFrame = RemapValClamped( m_flOriginStartFrame, 0, nMaxFrames, 0.0f, 1.0f );

+		m_flOriginEndFrame = RemapValClamped( m_flOriginEndFrame, 0, nMaxFrames, 0.0f, 1.0f );

+	}

+

+	// Find a key by this name

+	subKeys = blendValues->FindKey( ANGLES_KEYNAME );

+	if ( subKeys )

+	{

+		// Retrieve our frame numbers

+		m_flAnglesStartFrame = subKeys->GetFloat( "startframe", 0.0f );

+		m_flAnglesEndFrame = subKeys->GetFloat( "endframe", nMaxFrames );

+

+		// Convert to normalized values

+		m_flAnglesStartFrame = RemapValClamped( m_flAnglesStartFrame, 0, nMaxFrames, 0.0f, 1.0f );

+		m_flAnglesEndFrame = RemapValClamped( m_flAnglesEndFrame, 0, nMaxFrames, 0.0f, 1.0f );

+	}

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::SetTransitionSequence( int nSequence )

+{

+	// We need to use the ACT_SCRIPT_CUSTOM_MOVE scenario for this type of custom anim

+	m_nTransitionSequence = nSequence;

+	GetOuter()->m_iszSceneCustomMoveSeq = AllocPooledString( GetOuter()->GetSequenceName( m_nTransitionSequence ) );

+

+	// Cache off our blending information at this point

+	CacheBlendTargets();

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::SpeakIfAllowed( AIConcept_t concept, const char *modifiers /*= NULL*/, bool bRespondingToPlayer /*= false*/, char *pszOutResponseChosen /*= NULL*/, size_t bufsize /*= 0*/ )

+{

+	// FIXME: Store this cast off?

+	CAI_PlayerAlly *pAlly = dynamic_cast<CAI_PlayerAlly *>(GetOuter());

+	if ( pAlly != NULL )

+		return pAlly->SpeakIfAllowed( concept, modifiers, bRespondingToPlayer, pszOutResponseChosen, bufsize );

+

+	return false;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Forces us to begin a dynamic scripted scene

+// Input  : *lpszInteractionName - Name of the sequence we'll play

+//			*pOther - 

+// Output : Returns true on success, false on failure.

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::ForceVehicleInteraction( const char *lpszInteractionName, CBaseCombatCharacter *pOther )

+{

+	// Don't do this unless we're sitting in the cabin of the vehicle!

+	if ( GetPassengerState() != PASSENGER_STATE_INSIDE )

+		return false;

+

+	// Set a sequence and fire it off!

+	GetOuter()->m_iszSceneCustomMoveSeq = AllocPooledString( lpszInteractionName );

+	GetOuter()->SetIdealActivity( ACT_SCRIPT_CUSTOM_MOVE );

+

+	// Slam our schedule (very unsafe!)

+	GetOuter()->SetSchedule( SCHED_PASSENGER_PLAY_SCRIPTED_ANIM );

+

+	return true;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Fix up teleport event when in the vehicle

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::Teleport( const Vector *newPosition, const QAngle *newAngles, const Vector *newVelocity )

+{

+	//First, safely remove me from the vehicle

+	if ( GetPassengerState() != PASSENGER_STATE_OUTSIDE )

+	{

+		// Detach from the vehicle

+		DetachFromVehicle();

+		FinishExitVehicle();

+		

+		// Turn the behavior off

+		GetOuter()->ClearSchedule( "ai_behavior_passenger: teleport while in vehicle" );

+		Disable();

+	}

+

+	//Then allow the teleportation

+	BaseClass::Teleport( newPosition, newAngles, newVelocity );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: We override this function because it can completely wreak havoc if

+//			we're in the middle of a transition

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::ClearSchedule( const char *szReason )

+{

+	// Cannot do this while we're transitioning, but it's also a bug because the code that called it was probably relying on this to work!

+	if ( GetPassengerState() == PASSENGER_STATE_ENTERING || GetPassengerState() == PASSENGER_STATE_EXITING )

+	{

+		Warning("ClearSchedule rejected due to transitioning passenger: %s\n", szReason );

+		return;

+	}

+

+	// TODO: Even this will probably need more crafting depending on what we're doing in the vehicle

+	// Otherwise allow it

+	GetOuter()->ClearSchedule( szReason );

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: Dictate the terms for being interrupted by scripted schedules or scenes

+//-----------------------------------------------------------------------------

+bool CAI_PassengerBehavior::IsInterruptable( void )

+{

+	// NOTE: We should never be interrupted this way when in a car. This would effectively makes us go comatose if we

+	//		 start a FACETO, MOVETO, or SEQUENCE command from a VCD.

+	return false;

+}

+

+//-----------------------------------------------------------------------------

+// Purpose: 

+//-----------------------------------------------------------------------------

+void CAI_PassengerBehavior::CancelEnterVehicle( void )

+{

+	// Stop!

+	if ( GetPassengerState() == PASSENGER_STATE_OUTSIDE )

+	{

+		SetCondition( COND_PASSENGER_CANCEL_ENTER );

+	}

+}

+

+// ----------------------------------------------

+// Custom AI declarations

+// ----------------------------------------------

+

+AI_BEGIN_CUSTOM_SCHEDULE_PROVIDER( CAI_PassengerBehavior )

+{

+	DECLARE_ACTIVITY( ACT_PASSENGER_IDLE )

+	DECLARE_ACTIVITY( ACT_PASSENGER_RANGE_ATTACK1 )

+

+	DECLARE_CONDITION( COND_PASSENGER_HARD_IMPACT )

+	DECLARE_CONDITION( COND_PASSENGER_ENTERING )

+	DECLARE_CONDITION( COND_PASSENGER_EXITING )

+	DECLARE_CONDITION( COND_PASSENGER_VEHICLE_STARTED )

+	DECLARE_CONDITION( COND_PASSENGER_VEHICLE_STOPPED )

+	DECLARE_CONDITION( COND_PASSENGER_OVERTURNED )

+	DECLARE_CONDITION( COND_PASSENGER_CANCEL_ENTER )

+	DECLARE_CONDITION( COND_PASSENGER_ERRATIC_DRIVING )

+	DECLARE_CONDITION( COND_PASSENGER_PLAYER_ENTERED_VEHICLE )

+	DECLARE_CONDITION( COND_PASSENGER_PLAYER_EXITED_VEHICLE )

+	DECLARE_CONDITION( COND_PASSENGER_JOSTLE_SMALL )

+

+	DECLARE_TASK( TASK_PASSENGER_ENTER_VEHICLE )

+	DECLARE_TASK( TASK_PASSENGER_EXIT_VEHICLE )

+	DECLARE_TASK( TASK_PASSENGER_ATTACH_TO_VEHICLE )

+	DECLARE_TASK( TASK_PASSENGER_DETACH_FROM_VEHICLE )

+	DECLARE_TASK( TASK_PASSENGER_SET_IDEAL_ENTRY_YAW )

+

+	// FIXME: Move to companion

+	DEFINE_SCHEDULE

+	(

+	SCHED_PASSENGER_ENTER_VEHICLE,

+

+	"	Tasks"

+	"		TASK_PASSENGER_SET_IDEAL_ENTRY_YAW	0"

+	"		TASK_FACE_IDEAL						0"

+	"		TASK_PASSENGER_ATTACH_TO_VEHICLE	0"

+	"		TASK_PASSENGER_ENTER_VEHICLE		0"

+	""

+	"	Interrupts"

+	"		COND_NO_CUSTOM_INTERRUPTS"

+	)

+

+	DEFINE_SCHEDULE

+	(

+	SCHED_PASSENGER_EXIT_VEHICLE,

+

+	"	Tasks"

+	"		TASK_SET_FAIL_SCHEDULE		SCHEDULE:SCHED_PASSENGER_IDLE"

+	"		TASK_PASSENGER_DETACH_FROM_VEHICLE	0"

+	"		TASK_WAIT 0.1"  // We must wait one tick for us to start being updated

+	"		TASK_PASSENGER_EXIT_VEHICLE	0"

+	""

+	"	Interrupts"

+	"		COND_NO_CUSTOM_INTERRUPTS"

+	"		COND_TASK_FAILED"

+	)

+

+	DEFINE_SCHEDULE

+	( 

+	SCHED_PASSENGER_IDLE,

+

+	"	Tasks"

+	"		TASK_SET_ACTIVITY			ACTIVITY:ACT_IDLE"

+	"		TASK_WAIT					2"

+	""

+	"	Interrupts"

+	"		COND_PROVOKED"

+	"		COND_NEW_ENEMY"

+	"		COND_CAN_RANGE_ATTACK1"

+	"		COND_CAN_MELEE_ATTACK1"

+	"		COND_PASSENGER_EXITING"

+	"		COND_HEAR_DANGER"

+	)

+

+	DEFINE_SCHEDULE

+	( 

+	SCHED_PASSENGER_PLAY_SCRIPTED_ANIM,

+	

+	"	Tasks"

+	"		TASK_PLAY_SEQUENCE			ACTIVITY:ACT_SCRIPT_CUSTOM_MOVE"

+	""

+	"	Interrupts"

+	"		COND_PASSENGER_HARD_IMPACT"

+	)

+

+	AI_END_CUSTOM_SCHEDULE_PROVIDER()

+}