1HEADmaster

1 files changed, 1190 insertions, 0 deletions

diff --git a/game/server/npc_vehicledriver.cpp b/game/server/npc_vehicledriver.cpp
new file mode 100644
index 0000000..45da78d
--- /dev/null
+++ b/game/server/npc_vehicledriver.cpp
@@ -0,0 +1,1190 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "ai_network.h"
+#include "ai_default.h"
+#include "ai_schedule.h"
+#include "ai_hull.h"
+#include "ai_node.h"
+#include "ai_task.h"
+#include "ai_senses.h"
+#include "ai_navigator.h"
+#include "ai_route.h"
+#include "entitylist.h"
+#include "soundenvelope.h"
+#include "gamerules.h"
+#include "ndebugoverlay.h"
+#include "soundflags.h"
+#include "trains.h"
+#include "globalstate.h"
+#include "vehicle_base.h"
+#include "npc_vehicledriver.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+#define	DRIVER_DEBUG_PATH				1
+#define	DRIVER_DEBUG_PATH_SPLINE		2
+
+//------------------------------------
+// 
+//------------------------------------
+ConVar g_debug_vehicledriver( "g_debug_vehicledriver", "0", FCVAR_CHEAT );
+
+BEGIN_DATADESC( CNPC_VehicleDriver )
+	DEFINE_KEYFIELD( m_iszVehicleName, FIELD_STRING, "vehicle" ),
+//	DEFINE_FIELD( m_hVehicle,			FIELD_EHANDLE ),
+	// DEFINE_FIELD( m_pVehicleInterface, FIELD_POINTER ),
+	DEFINE_FIELD( m_hVehicleEntity,		FIELD_EHANDLE ),
+	// DEFINE_FIELD( m_Waypoints,		FIELD_???? ),
+	// DEFINE_FIELD( m_pCurrentWaypoint, FIELD_POINTER ),
+	// DEFINE_FIELD( m_pNextWaypoint,	FIELD_POINTER ),
+	DEFINE_FIELD( m_vecDesiredVelocity, FIELD_VECTOR ),
+	DEFINE_FIELD( m_vecDesiredPosition, FIELD_POSITION_VECTOR ),
+	DEFINE_FIELD( m_vecPrevPoint,		FIELD_POSITION_VECTOR ),
+	DEFINE_FIELD( m_vecPrevPrevPoint,	FIELD_POSITION_VECTOR ),
+	DEFINE_FIELD( m_vecPostPoint,		FIELD_POSITION_VECTOR ),
+	DEFINE_FIELD( m_vecPostPostPoint,	FIELD_POSITION_VECTOR ),
+	DEFINE_FIELD( m_flDistanceAlongSpline, FIELD_FLOAT ),
+	DEFINE_KEYFIELD( m_flDriversMaxSpeed, FIELD_FLOAT, "drivermaxspeed" ),
+	DEFINE_KEYFIELD( m_flDriversMinSpeed, FIELD_FLOAT, "driverminspeed" ),
+	DEFINE_FIELD( m_flMaxSpeed,			FIELD_FLOAT ),
+	DEFINE_FIELD( m_flGoalSpeed,		FIELD_FLOAT ),
+	//DEFINE_KEYFIELD( m_flInitialSpeed,	FIELD_FLOAT ),
+	DEFINE_FIELD( m_flSteering,			FIELD_FLOAT ),
+
+	// Inputs
+	DEFINE_INPUTFUNC( FIELD_FLOAT, "SetDriversMaxSpeed", InputSetDriversMaxSpeed ),
+	DEFINE_INPUTFUNC( FIELD_FLOAT, "SetDriversMinSpeed", InputSetDriversMinSpeed ),
+
+	DEFINE_INPUTFUNC( FIELD_VOID, "StartForward", InputStartForward ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "Stop", InputStop ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "StartFiring", InputStartFiring ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "StopFiring", InputStopFiring ),
+	DEFINE_INPUTFUNC( FIELD_STRING, "GotoPathCorner", InputGotoPathCorner ),
+
+END_DATADESC()
+
+LINK_ENTITY_TO_CLASS( npc_vehicledriver, CNPC_VehicleDriver );
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+CNPC_VehicleDriver::CNPC_VehicleDriver( void )
+{
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+CNPC_VehicleDriver::~CNPC_VehicleDriver( void )
+{
+	ClearWaypoints();
+}
+
+//------------------------------------------------------------------------------
+// Purpose :
+//------------------------------------------------------------------------------
+void CNPC_VehicleDriver::Spawn( void )
+{
+	Precache( );
+
+	BaseClass::Spawn();
+
+	CapabilitiesClear();
+	CapabilitiesAdd( bits_CAP_MOVE_GROUND );
+	CapabilitiesAdd( bits_CAP_MOVE_SHOOT );
+
+	SetModel( "models/roller_vehicledriver.mdl" );
+	SetHullType(HULL_LARGE);
+	SetHullSizeNormal();
+	m_iMaxHealth = m_iHealth = 1;
+	m_flFieldOfView	= VIEW_FIELD_FULL;
+
+	SetSolid( SOLID_BBOX );
+	AddSolidFlags( FSOLID_NOT_SOLID );
+	SetMoveType( MOVETYPE_NONE );
+	AddEffects( EF_NODRAW );
+
+	m_lifeState	= LIFE_ALIVE;
+	SetCycle( 0 );
+	ResetSequenceInfo();
+
+	AddFlag( FL_NPC );
+
+	m_flMaxSpeed = 0;
+	m_flGoalSpeed = m_flInitialSpeed;
+
+	m_vecDesiredVelocity = vec3_origin;
+	m_vecPrevPoint = vec3_origin;
+	m_vecPrevPrevPoint = vec3_origin;
+	m_vecPostPoint = vec3_origin;
+	m_vecPostPostPoint = vec3_origin;
+	m_vecDesiredPosition = vec3_origin;
+	m_flSteering = 45;
+	m_flDistanceAlongSpline = 0.2;
+	m_pCurrentWaypoint = m_pNextWaypoint = NULL;
+
+	GetNavigator()->SetPathcornerPathfinding( false );
+
+	NPCInit();
+
+	m_takedamage = DAMAGE_NO;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::Precache( void )
+{
+	PrecacheModel( "models/roller_vehicledriver.mdl" );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::Activate( void )
+{
+	BaseClass::Activate();
+
+	// Restore doesn't need to do this
+	if ( m_hVehicleEntity )
+		return;
+
+	// Make sure we've got a vehicle
+	if ( m_iszVehicleName == NULL_STRING )
+	{
+		Warning( "npc_vehicledriver %s has no vehicle to drive.\n", STRING(GetEntityName()) );
+		UTIL_Remove( this );
+		return;
+	}
+
+	m_hVehicleEntity = (gEntList.FindEntityByName( NULL, STRING(m_iszVehicleName) ));
+	if ( !m_hVehicleEntity )
+	{
+		Warning( "npc_vehicledriver %s couldn't find his vehicle named %s.\n", STRING(GetEntityName()), STRING(m_iszVehicleName) );
+		UTIL_Remove( this );
+		return;
+	}
+
+	m_pVehicleInterface = m_hVehicleEntity->GetServerVehicle();
+	Assert( m_pVehicleInterface );
+	if ( !m_pVehicleInterface->NPC_CanDrive() )
+	{
+		Warning( "npc_vehicledriver %s doesn't know how to drive vehicle %s.\n", STRING(GetEntityName()), STRING(m_hVehicleEntity->GetEntityName()) );
+		UTIL_Remove( this );
+		return;
+	}
+
+	// We've found our vehicle. Move to it and start following it.
+	SetAbsOrigin( m_hVehicleEntity->WorldSpaceCenter() );
+	m_pVehicleInterface->NPC_SetDriver( this );
+
+	RecalculateSpeeds();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::OnRestore( void )
+{
+	BaseClass::OnRestore();
+	if ( m_hVehicleEntity )
+	{
+		m_pVehicleInterface = m_hVehicleEntity->GetServerVehicle();
+		Assert( m_pVehicleInterface );
+	}
+}
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::UpdateOnRemove( void )
+{
+	// Leave our vehicle
+	if ( m_pVehicleInterface )
+	{
+		m_pVehicleInterface->NPC_SetDriver( NULL );
+	}
+
+	BaseClass::UpdateOnRemove();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::PrescheduleThink( void )
+{
+	if ( !m_hVehicleEntity )
+	{
+		m_pVehicleInterface = NULL;
+		UTIL_Remove( this );
+		return;
+	}
+
+	// Keep up with my vehicle
+	SetAbsOrigin( m_hVehicleEntity->WorldSpaceCenter() );
+	SetAbsAngles( m_hVehicleEntity->GetAbsAngles() );
+
+	BaseClass::PrescheduleThink();
+
+	if ( m_NPCState == NPC_STATE_IDLE )
+	{
+		m_pVehicleInterface->NPC_Brake();
+		return;
+	}
+
+	// If we've been picked up by something (dropship probably), abort.
+	if ( m_hVehicleEntity->GetParent() )
+	{
+		SetState( NPC_STATE_IDLE );
+		ClearWaypoints();
+		SetGoalEnt( NULL );
+		return;
+	}
+
+	DriveVehicle();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+int CNPC_VehicleDriver::SelectSchedule( void )
+{
+	// Vehicle driver hangs in the air inside the vehicle, so we never need to fall to ground
+	ClearCondition( COND_FLOATING_OFF_GROUND );
+
+	if ( HasSpawnFlags(SF_VEHICLEDRIVER_INACTIVE) )
+	{
+		SetState( NPC_STATE_IDLE );
+		return SCHED_VEHICLEDRIVER_INACTIVE;
+	}
+
+	if ( GetGoalEnt() )
+		return SCHED_VEHICLEDRIVER_DRIVE_PATH;
+
+	switch ( m_NPCState )
+	{
+	case NPC_STATE_IDLE:
+		break;
+
+	case NPC_STATE_ALERT:
+		break;
+
+	case NPC_STATE_COMBAT:
+		{
+			if ( HasCondition(COND_NEW_ENEMY) || HasCondition( COND_ENEMY_DEAD ) )
+				return BaseClass::SelectSchedule();
+
+			if ( HasCondition(COND_SEE_ENEMY) )
+			{
+				// we can see the enemy
+				if ( HasCondition(COND_CAN_RANGE_ATTACK2) )
+					return SCHED_RANGE_ATTACK2;
+				if ( HasCondition(COND_CAN_RANGE_ATTACK1) )
+					return SCHED_RANGE_ATTACK1;
+
+				// What to do here? Not necessarily easy to face enemy.
+				//if ( HasCondition(COND_NOT_FACING_ATTACK) )
+					//return SCHED_COMBAT_FACE;
+			}
+
+			// We can see him, but can't shoot him. Just wait and hope he comes closer.
+			return SCHED_VEHICLEDRIVER_COMBAT_WAIT;
+		}
+		break;
+	}
+
+	return BaseClass::SelectSchedule();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+int	CNPC_VehicleDriver::RangeAttack1Conditions( float flDot, float flDist )
+{
+	// Vehicle not ready to fire again yet?
+	if ( m_pVehicleInterface->Weapon_PrimaryCanFireAt() > gpGlobals->curtime )
+		return 0;
+
+	// Check weapon range
+	float flMinRange, flMaxRange;
+	m_pVehicleInterface->Weapon_PrimaryRanges( &flMinRange, &flMaxRange );
+	if ( flDist < flMinRange )
+		return COND_TOO_CLOSE_TO_ATTACK;
+	if ( flDist > flMaxRange )
+		return COND_TOO_FAR_TO_ATTACK;
+
+	// Don't shoot backwards
+	Vector vecForward;
+	Vector vecToTarget = (GetEnemy()->GetAbsOrigin() - GetAbsOrigin());
+	VectorNormalize(vecToTarget);
+	m_hVehicleEntity->GetVectors( &vecForward, NULL, NULL );
+	float flForwardDot = DotProduct( vecForward, vecToTarget );
+	if ( flForwardDot < 0 && fabs(flDot) < 0.5 )
+		return COND_NOT_FACING_ATTACK;
+
+	return COND_CAN_RANGE_ATTACK1;
+}
+
+//=========================================================
+// RangeAttack2Conditions
+//=========================================================
+int CNPC_VehicleDriver::RangeAttack2Conditions( float flDot, float flDist )
+{
+	// Vehicle not ready to fire again yet?
+	if ( m_pVehicleInterface->Weapon_SecondaryCanFireAt() > gpGlobals->curtime )
+		return 0;
+
+	// Check weapon range
+	float flMinRange, flMaxRange;
+	m_pVehicleInterface->Weapon_SecondaryRanges( &flMinRange, &flMaxRange );
+	if ( flDist < flMinRange )
+		return COND_TOO_CLOSE_TO_ATTACK;
+	if ( flDist > flMaxRange )
+		return COND_TOO_FAR_TO_ATTACK;
+
+	return COND_CAN_RANGE_ATTACK2;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+int CNPC_VehicleDriver::TranslateSchedule( int scheduleType ) 
+{
+	switch ( scheduleType )
+	{
+	case SCHED_COMBAT_FACE:
+		{
+			// Vehicles can't rotate, so don't try and face
+			return TranslateSchedule( SCHED_CHASE_ENEMY );
+		}
+		break;
+
+	case SCHED_ALERT_FACE:
+		{
+			// Vehicles can't rotate, so don't try and face
+			return SCHED_ALERT_STAND;
+		}
+		break;
+
+	case SCHED_CHASE_ENEMY_FAILED:
+	case SCHED_FAIL:
+		{
+			return SCHED_FAIL;
+		}
+		break;
+	}
+
+	return BaseClass::TranslateSchedule(scheduleType);
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : *pTask - 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::StartTask( const Task_t *pTask )
+{
+	switch( pTask->iTask )
+	{
+	case TASK_RUN_PATH:
+	case TASK_WALK_PATH:
+		TaskComplete();
+		break;
+
+	case TASK_FACE_IDEAL:
+	case TASK_FACE_ENEMY:
+		{
+			// Vehicle ignores face commands, since it can't rotate on the spot.
+			TaskComplete();
+		}
+		break;
+
+	case TASK_VEHICLEDRIVER_GET_PATH:
+		{
+			if ( !GetGoalEnt() )
+			{
+				TaskFail( FAIL_NO_TARGET );
+				return;
+			}
+
+			CheckForTeleport();
+
+			if ( g_debug_vehicledriver.GetInt() & DRIVER_DEBUG_PATH )
+			{
+				NDebugOverlay::Box( GetGoalEnt()->GetAbsOrigin(), -Vector(50,50,50), Vector(50,50,50), 255,255,255, true, 5);
+			}
+
+	  		AI_NavGoal_t goal( GOALTYPE_PATHCORNER, GetGoalEnt()->GetLocalOrigin(), ACT_WALK, AIN_DEF_TOLERANCE, AIN_YAW_TO_DEST);
+  			if ( !GetNavigator()->SetGoal( goal ) )
+   			{
+				TaskFail( FAIL_NO_ROUTE );
+				return;
+   			}
+
+			TaskComplete();
+		}
+		break;
+
+	case TASK_WAIT_FOR_MOVEMENT:
+		{
+			if (GetNavigator()->GetGoalType() == GOALTYPE_NONE)
+			{
+				TaskComplete();
+				GetNavigator()->StopMoving();		// Stop moving
+			}
+			else if (!GetNavigator()->IsGoalActive())
+			{
+				SetIdealActivity( GetStoppedActivity() );
+			}
+			else
+			{
+				// Check validity of goal type
+				ValidateNavGoal();
+			}
+		}
+		break;
+
+	default:
+		BaseClass::StartTask( pTask );
+		break;
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose:
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::RunTask( const Task_t *pTask )
+{
+	switch( pTask->iTask )
+	{
+	case TASK_RANGE_ATTACK1:
+		{
+			// Vehicle driver has no animations, so fire a burst at the target
+			CBaseEntity *pEnemy = GetEnemy();
+			if ( pEnemy )
+			{
+				// TODO: Get a bodytarget from the firing point of the gun in the vehicle
+				Vector vecTarget = GetEnemy()->BodyTarget( GetAbsOrigin(), false );
+				m_pVehicleInterface->NPC_AimPrimaryWeapon( vecTarget );
+				m_pVehicleInterface->NPC_PrimaryFire();
+				TaskComplete();
+			}
+			else
+			{
+				TaskFail(FAIL_NO_ENEMY);
+				return;
+			}
+		}
+		break;
+
+	case TASK_RANGE_ATTACK2:
+		{
+			// Vehicle driver has no animations, so fire a burst at the target
+			CBaseEntity *pEnemy = GetEnemy();
+			if ( pEnemy )
+			{
+				// TODO: Get a bodytarget from the firing point of the gun in the vehicle
+				Vector vecTarget = GetEnemy()->BodyTarget( GetAbsOrigin(), false );
+				m_pVehicleInterface->NPC_AimSecondaryWeapon( vecTarget );
+				m_pVehicleInterface->NPC_SecondaryFire();
+				TaskComplete();
+			}
+			else
+			{
+				TaskFail(FAIL_NO_ENEMY);
+				return;
+			}
+		}
+		break;
+
+	case TASK_WAIT_FOR_MOVEMENT:
+		{
+			BaseClass::RunTask( pTask );
+
+			if ( HasCondition(COND_SEE_ENEMY) )
+			{
+				// we can see the enemy
+				if ( HasCondition(COND_CAN_RANGE_ATTACK2) )
+				{
+					ChainRunTask( TASK_RANGE_ATTACK2, pTask->flTaskData );
+				}
+				if ( HasCondition(COND_CAN_RANGE_ATTACK1) )
+				{
+					ChainRunTask( TASK_RANGE_ATTACK1, pTask->flTaskData );
+				}
+			}
+		}
+		break;
+
+	default:
+		BaseClass::RunTask( pTask );
+		break;
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::GatherEnemyConditions( CBaseEntity *pEnemy )
+{
+	BaseClass::GatherEnemyConditions(pEnemy);
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Overridden because if the player is a criminal, we hate them.
+//-----------------------------------------------------------------------------
+Disposition_t CNPC_VehicleDriver::IRelationType(CBaseEntity *pTarget)
+{
+	// If it's the player and they are a criminal, we hate them.
+	if ( pTarget && pTarget->Classify() == CLASS_PLAYER)
+	{
+		if (GlobalEntity_GetState("gordon_precriminal") == GLOBAL_ON)
+		{
+			return(D_NU);
+		}
+	}
+
+	return(BaseClass::IRelationType(pTarget));
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+bool CNPC_VehicleDriver::OverrideMove( float flInterval )
+{
+	if ( !m_hVehicleEntity )
+		return true;
+
+	// If we don't have a maxspeed, we've been stopped, so abort early
+	// Or we've been picked up by something (dropship probably).
+	if ( !m_flMaxSpeed || m_hVehicleEntity->GetParent() )
+	{
+		m_pVehicleInterface->NPC_Brake();
+		return true;
+	}
+
+	// -----------------------------------------------------------------
+	// If I have a route, keep it updated and move toward target
+	// ------------------------------------------------------------------
+	if (GetNavigator()->IsGoalActive())
+	{
+		if ( OverridePathMove( flInterval ) )
+			return true;
+	}
+
+	return true;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::CalculatePostPoints( void )
+{
+	m_vecPostPoint = m_vecDesiredPosition;
+	m_vecPostPostPoint = m_vecDesiredPosition;
+
+	// If we have a waypoint beyond our current, use it instead.
+	if ( !GetNavigator()->CurWaypointIsGoal() )
+	{
+		AI_Waypoint_t *pCurWaypoint = GetNavigator()->GetPath()->GetCurWaypoint();
+		m_vecPostPoint = pCurWaypoint->GetNext()->GetPos();
+		if ( pCurWaypoint->GetNext()->GetNext() )
+		{
+			m_vecPostPostPoint = pCurWaypoint->GetNext()->GetNext()->GetPos();
+		}
+		else
+		{
+			m_vecPostPostPoint = m_vecPostPoint;
+		}
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Destroy our current waypoints
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::ClearWaypoints( void )
+{
+	m_vecDesiredPosition = vec3_origin;
+	if ( m_pCurrentWaypoint )
+	{
+		delete m_pCurrentWaypoint;
+		m_pCurrentWaypoint = NULL;
+	}
+	if ( m_pNextWaypoint )
+	{
+		delete m_pNextWaypoint;
+		m_pNextWaypoint = NULL;
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: We've hit a waypoint. Handle it, and return true if this is the
+//			end of the path.
+//-----------------------------------------------------------------------------
+bool CNPC_VehicleDriver::WaypointReached( void )
+{
+	// We reached our current waypoint.
+	m_vecPrevPrevPoint = m_vecPrevPoint;
+	m_vecPrevPoint = GetAbsOrigin();
+
+	// If we've got to our goal, we're done here.
+	if ( GetNavigator()->CurWaypointIsGoal() )
+	{
+		// Necessary for InPass outputs to be fired, is a no-op otherwise
+		GetNavigator()->AdvancePath();
+	
+		// Stop pathing
+		ClearWaypoints();
+		TaskComplete();
+		SetGoalEnt( NULL );
+		return true;
+	}
+
+	AI_Waypoint_t *pCurWaypoint = GetNavigator()->GetPath()->GetCurWaypoint();
+	if ( !pCurWaypoint )
+		return false;
+
+	// Check to see if the waypoint wants us to change speed
+	if ( pCurWaypoint->Flags() & bits_WP_TO_PATHCORNER )
+	{
+		CBaseEntity *pEntity = pCurWaypoint->hPathCorner;
+		if ( pEntity )
+		{
+			if ( pEntity->m_flSpeed > 0 )
+			{
+				if ( pEntity->m_flSpeed <= 1.0 )
+				{
+					m_flDriversMaxSpeed = pEntity->m_flSpeed;
+					RecalculateSpeeds();
+				}
+				else
+				{
+					Warning("path_track %s tried to tell the npc_vehicledriver to set speed to %.3f. npc_vehicledriver only accepts values between 0 and 1.\n", STRING(pEntity->GetEntityName()), pEntity->m_flSpeed );
+				}
+			}
+		}
+	}
+
+	// Get the waypoints for the next part of the path
+	GetNavigator()->AdvancePath();
+	if ( !GetNavigator()->GetPath()->GetCurWaypoint() )
+	{
+		ClearWaypoints();
+		TaskComplete();
+		SetGoalEnt( NULL );
+		return true;
+	}
+
+	m_vecDesiredPosition = GetNavigator()->GetCurWaypointPos();	
+	CalculatePostPoints();
+
+	// Move to the next waypoint
+	delete m_pCurrentWaypoint;
+	m_pCurrentWaypoint = m_pNextWaypoint;
+	m_Waypoints[1] = new CVehicleWaypoint( m_vecPrevPoint, m_vecDesiredPosition, m_vecPostPoint, m_vecPostPostPoint );
+	m_pNextWaypoint = m_Waypoints[1];
+
+	// Drop the spline marker back
+	m_flDistanceAlongSpline = MAX( 0, m_flDistanceAlongSpline - 1.0 );
+
+	CheckForTeleport();
+
+	return false;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+bool CNPC_VehicleDriver::OverridePathMove( float flInterval )
+{
+	// Setup our initial path data if we've just started running a path
+	if ( !m_pCurrentWaypoint )
+	{
+		m_vecPrevPoint = GetAbsOrigin();
+		m_vecPrevPrevPoint = GetAbsOrigin();
+		m_vecDesiredPosition = GetNavigator()->GetCurWaypointPos();	
+		CalculatePostPoints();
+	
+		// Init our two waypoints
+		m_Waypoints[0] = new CVehicleWaypoint( m_vecPrevPrevPoint, m_vecPrevPoint, m_vecDesiredPosition, m_vecPostPoint );
+		m_Waypoints[1] = new CVehicleWaypoint( m_vecPrevPoint, m_vecDesiredPosition, m_vecPostPoint, m_vecPostPostPoint );
+		m_pCurrentWaypoint = m_Waypoints[0];
+		m_pNextWaypoint = m_Waypoints[1];
+
+		m_flDistanceAlongSpline = 0.2;
+	}
+
+	// Have we reached our target? See if we've passed the current waypoint's plane.
+	Vector vecAbsMins, vecAbsMaxs;
+	CollisionProp()->WorldSpaceAABB( &vecAbsMins, &vecAbsMaxs );
+	if ( BoxOnPlaneSide( vecAbsMins, vecAbsMaxs, &m_pCurrentWaypoint->planeWaypoint ) == 3 )
+	{
+		if ( WaypointReached() )
+			return true;
+	}
+
+	// Did we bypass it and reach the next one already?
+	if ( m_pNextWaypoint && BoxOnPlaneSide( vecAbsMins, vecAbsMaxs, &m_pNextWaypoint->planeWaypoint ) == 3 )
+	{
+		if ( WaypointReached() )
+			return true;
+	}
+
+	// We may have just teleported, so check to make sure we have a waypoint
+	if ( !m_pCurrentWaypoint || !m_pNextWaypoint )
+		return false;
+
+	// Figure out which spline we're trucking along
+	CVehicleWaypoint *pCurrentSplineBeingTraversed = m_pCurrentWaypoint;
+	if ( m_flDistanceAlongSpline > 1 )
+	{
+		pCurrentSplineBeingTraversed = m_pNextWaypoint;
+	}
+
+	// Get our current speed, and check it against the length of the spline to know how far to advance our marker
+	AngularImpulse angVel;
+	Vector vecVelocity;
+	IPhysicsObject *pVehiclePhysics = m_hVehicleEntity->VPhysicsGetObject();
+
+	if( !pVehiclePhysics )
+	{
+		// I think my vehicle has been destroyed.
+		return false;
+	}
+
+	pVehiclePhysics->GetVelocity( &vecVelocity, &angVel );
+	float flSpeed = vecVelocity.Length();
+	float flIncTime = gpGlobals->curtime - GetLastThink();
+	float flIncrement = flIncTime * (flSpeed / pCurrentSplineBeingTraversed->GetLength());
+
+	// Now advance our point along the spline
+	m_flDistanceAlongSpline = clamp( m_flDistanceAlongSpline + flIncrement, 0.f, 2.f);
+	if ( m_flDistanceAlongSpline > 1 )
+	{
+		// We crossed the spline boundary
+		pCurrentSplineBeingTraversed = m_pNextWaypoint;
+	}
+
+	Vector vSplinePoint = pCurrentSplineBeingTraversed->GetPointAt( m_flDistanceAlongSpline > 1 ? m_flDistanceAlongSpline-1 : m_flDistanceAlongSpline );
+	Vector vSplineTangent = pCurrentSplineBeingTraversed->GetTangentAt( m_flDistanceAlongSpline > 1 ? m_flDistanceAlongSpline-1 : m_flDistanceAlongSpline );
+
+	// Now that we've got the target spline point & tangent, use it to decide what our desired velocity is.
+	// If we're close to the tangent, just use the tangent. Otherwise, Lerp towards it.
+	Vector vecToDesired = (vSplinePoint - GetAbsOrigin());
+	float flDistToDesired = VectorNormalize( vecToDesired );
+	float flTangentLength = VectorNormalize( vSplineTangent );
+
+	if ( flDistToDesired > (flTangentLength * 0.75) )
+	{
+		m_vecDesiredVelocity = vecToDesired * flTangentLength;
+	}
+	else
+	{
+		VectorLerp( vSplineTangent, vecToDesired * flTangentLength, (flDistToDesired / (flTangentLength * 0.5)), m_vecDesiredVelocity );
+	}
+
+	// Decrease speed according to the turn we're trying to make
+	Vector vecRight;
+	m_hVehicleEntity->GetVectors( NULL, &vecRight, NULL );
+	Vector vecNormVel = m_vecDesiredVelocity;
+	VectorNormalize( vecNormVel );
+	float flDotRight = DotProduct( vecRight, vecNormVel );
+	flSpeed = (1.0 - fabs(flDotRight));
+	// Don't go slower than we've been told to go
+	if ( flSpeed < m_flDriversMinSpeed )
+	{
+		flSpeed = m_flDriversMinSpeed;
+	}
+	m_vecDesiredVelocity = vecNormVel * (flSpeed * m_flMaxSpeed);
+
+	// Bunch o'debug
+	if ( g_debug_vehicledriver.GetInt() & DRIVER_DEBUG_PATH )
+	{
+		NDebugOverlay::Box( m_vecPrevPrevPoint, -Vector(15,15,15), Vector(15,15,15), 192,0,0, true, 0.1);
+		NDebugOverlay::Box( m_vecPrevPoint, -Vector(20,20,20), Vector(20,20,20), 255,0,0, true, 0.1);
+		NDebugOverlay::Box( m_vecPostPoint, -Vector(20,20,20), Vector(20,20,20), 0,192,0, true, 0.1);
+		NDebugOverlay::Box( m_vecPostPostPoint, -Vector(20,20,20), Vector(20,20,20), 0,128,0, true, 0.1);
+		NDebugOverlay::Box( vSplinePoint, -Vector(10,10,10), Vector(10,10,10), 0,0,255, true, 0.1);
+		NDebugOverlay::Line( vSplinePoint, vSplinePoint + (vSplineTangent * 40), 0,0,255, true, 0.1);
+
+		//NDebugOverlay::HorzArrow( pCurrentSplineBeingTraversed->splinePoints[0], pCurrentSplineBeingTraversed->splinePoints[1], 30, 255,255,255,0, false, 0.1f );
+		//NDebugOverlay::HorzArrow( pCurrentSplineBeingTraversed->splinePoints[1], pCurrentSplineBeingTraversed->splinePoints[2], 20, 255,255,255,0, false, 0.1f );
+		//NDebugOverlay::HorzArrow( pCurrentSplineBeingTraversed->splinePoints[2], pCurrentSplineBeingTraversed->splinePoints[3], 10, 255,255,255,0, false, 0.1f );
+
+		// Draw the plane we're checking against for waypoint passing
+		Vector vecPlaneRight;
+		CrossProduct( m_pCurrentWaypoint->planeWaypoint.normal, Vector(0,0,1), vecPlaneRight );
+		Vector vecPlane = m_pCurrentWaypoint->splinePoints[2];
+		NDebugOverlay::Line( vecPlane + (vecPlaneRight * -100), vecPlane + (vecPlaneRight * 100), 255,0,0, true, 0.1);
+
+		// Draw the next plane too
+		CrossProduct( m_pNextWaypoint->planeWaypoint.normal, Vector(0,0,1), vecPlaneRight );
+		vecPlane = m_pNextWaypoint->splinePoints[2];
+		NDebugOverlay::Line( vecPlane + (vecPlaneRight * -100), vecPlane + (vecPlaneRight * 100), 192,0,0, true, 0.1);
+	}
+
+	if ( g_debug_vehicledriver.GetInt() & DRIVER_DEBUG_PATH_SPLINE )
+	{
+		for ( int i = 0; i < 10; i++ )
+		{
+			Vector vecTarget = m_pCurrentWaypoint->GetPointAt( 0.1 * i );
+			Vector vecTangent = m_pCurrentWaypoint->GetTangentAt( 0.1 * i );
+			VectorNormalize(vecTangent);
+			NDebugOverlay::Box( vecTarget, -Vector(10,10,10), Vector(10,10,10), 255,0,0, true, 0.1 );
+			NDebugOverlay::Line( vecTarget, vecTarget + (vecTangent * 10), 255,255,0, true, 0.1);
+		}
+	}
+
+	return true;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: This takes the current place the NPC's trying to get to, figures out
+//			what keys to press to get the vehicle to go there, and then sends
+//			them to the vehicle.
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::DriveVehicle( void )
+{
+	AngularImpulse angVel;
+	Vector vecVelocity;
+	IPhysicsObject *pVehiclePhysics = m_hVehicleEntity->VPhysicsGetObject();
+	if ( !pVehiclePhysics )
+		return;
+	pVehiclePhysics->GetVelocity( &vecVelocity, &angVel );
+	float flSpeed = VectorNormalize( vecVelocity );
+
+	// If we have no target position to drive to, brake to a halt
+	if ( !m_flMaxSpeed || m_vecDesiredPosition == vec3_origin )
+	{
+		if ( flSpeed > 1 )
+		{
+			m_pVehicleInterface->NPC_Brake();
+		}
+		return;
+	}
+
+	if ( g_debug_vehicledriver.GetInt() & DRIVER_DEBUG_PATH )
+	{
+		NDebugOverlay::Box(m_vecDesiredPosition, -Vector(20,20,20), Vector(20,20,20), 0,255,0, true, 0.1);
+		NDebugOverlay::Line(GetAbsOrigin(), GetAbsOrigin() + m_vecDesiredVelocity, 0,255,0, true, 0.1);
+	}
+
+	m_flGoalSpeed = VectorNormalize(m_vecDesiredVelocity);
+
+	// Is our target in front or behind us?
+	Vector vecForward, vecRight;
+	m_hVehicleEntity->GetVectors( &vecForward, &vecRight, NULL );
+	float flDot = DotProduct( vecForward, m_vecDesiredVelocity );
+	bool bBehind = ( flDot < 0 );
+	float flVelDot = DotProduct( vecVelocity, m_vecDesiredVelocity );
+	bool bGoingWrongWay = ( flVelDot < 0 );
+
+	// Figure out whether we should accelerate / decelerate
+	if ( bGoingWrongWay || (flSpeed < m_flGoalSpeed) )
+	{
+		// If it's behind us, go backwards not forwards
+		if ( bBehind )
+		{
+			m_pVehicleInterface->NPC_ThrottleReverse();
+		}
+		else
+		{
+			m_pVehicleInterface->NPC_ThrottleForward();
+		}
+	}
+	else
+	{
+		// Brake if we're go significantly too fast
+		if ( (flSpeed - 200) > m_flGoalSpeed )
+		{
+			m_pVehicleInterface->NPC_Brake();
+		}
+		else
+		{
+			m_pVehicleInterface->NPC_ThrottleCenter();
+		}
+	}
+
+	// Do we need to turn?
+	float flDotRight = DotProduct( vecRight, m_vecDesiredVelocity );
+	if ( bBehind )
+	{
+		// If we're driving backwards, flip our turning
+		flDotRight *= -1;
+	}
+	// Map it to the vehicle's steering
+	flDotRight *= (m_flSteering / 90);
+
+	if ( flDotRight < 0 )
+	{
+		// Turn left
+		m_pVehicleInterface->NPC_TurnLeft( -flDotRight );
+	}
+	else if ( flDotRight > 0 )
+	{
+		// Turn right
+		m_pVehicleInterface->NPC_TurnRight( flDotRight );
+	}
+	else
+	{
+		m_pVehicleInterface->NPC_TurnCenter();
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Check to see if we should teleport to the current path corner
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::CheckForTeleport( void )
+{
+	if ( !GetGoalEnt() )
+		return;
+
+	CPathTrack *pTrack = dynamic_cast<CPathTrack *>( GetGoalEnt() );
+	if ( !pTrack )
+		return;
+
+	// Does it have the teleport flag set?
+	if ( pTrack->HasSpawnFlags( SF_PATH_TELEPORT ) )
+	{
+		IncrementInterpolationFrame();
+
+		// Teleport the vehicle to the pathcorner
+		Vector vecMins, vecMaxs;
+		vecMins = m_hVehicleEntity->CollisionProp()->OBBMins();
+		vecMaxs = m_hVehicleEntity->CollisionProp()->OBBMaxs();
+		Vector vecTarget = pTrack->GetAbsOrigin() - (vecMins + vecMaxs) * 0.5;
+		vecTarget.z += ((vecMaxs.z - vecMins.z) * 0.5) + 8;	// Safety buffer
+
+		// Orient it to face the next point
+		QAngle vecAngles = pTrack->GetAbsAngles();
+		Vector vecToTarget = vec3_origin;
+		if ( pTrack->GetNext() )
+		{
+			vecToTarget = (pTrack->GetNext()->GetAbsOrigin() - pTrack->GetAbsOrigin());
+			VectorNormalize( vecToTarget );
+
+			// Vehicles are rotated 90 degrees
+			VectorAngles( vecToTarget, vecAngles );
+			vecAngles[YAW] -= 90;
+		}
+		m_hVehicleEntity->Teleport( &vecTarget, &vecAngles, &vec3_origin );
+
+		// Teleport the driver
+		SetAbsOrigin( m_hVehicleEntity->WorldSpaceCenter() );
+		SetAbsAngles( m_hVehicleEntity->GetAbsAngles() );
+
+		m_vecPrevPoint = pTrack->GetAbsOrigin();
+
+		// Move to the next waypoint, we've reached this one
+		if ( GetNavigator()->GetPath() )
+		{
+			WaypointReached();
+		}
+
+		// Clear our waypoints, because the next waypoint is certainly invalid now.
+		ClearWaypoints();
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+float CNPC_VehicleDriver::GetDefaultNavGoalTolerance()
+{
+	return 48;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::RecalculateSpeeds( void )
+{
+	// Get data from the vehicle
+	const vehicleparams_t *pParams = m_pVehicleInterface->GetVehicleParams();
+	if ( pParams )
+	{
+		m_flMaxSpeed = pParams->engine.maxSpeed * m_flDriversMaxSpeed;
+		m_flSteering = pParams->steering.degreesSlow;
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::InputSetDriversMaxSpeed( inputdata_t &inputdata )
+{
+	m_flDriversMaxSpeed = inputdata.value.Float();
+
+	RecalculateSpeeds();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::InputSetDriversMinSpeed( inputdata_t &inputdata )
+{
+	m_flDriversMinSpeed = inputdata.value.Float();
+
+	RecalculateSpeeds();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::InputStartForward( inputdata_t &inputdata )
+{
+	CLEARBITS( m_spawnflags, SF_VEHICLEDRIVER_INACTIVE );
+	if ( m_NPCState == NPC_STATE_IDLE )
+	{
+		SetState( NPC_STATE_ALERT );
+	}
+	SetCondition( COND_PROVOKED );
+
+	RecalculateSpeeds();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Tell the driver to stop moving
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::InputStop( inputdata_t &inputdata )
+{
+	m_flMaxSpeed = 0;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Tell the driver to start firing at targets
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::InputStartFiring( inputdata_t &inputdata )
+{
+	CLEARBITS( m_spawnflags, SF_VEHICLEDRIVER_INACTIVE );
+	SetCondition( COND_PROVOKED );
+
+	float flMinRange, flMaxRange;
+	// If the vehicle has a weapon, set our capability
+	if ( m_pVehicleInterface->NPC_HasPrimaryWeapon() )
+	{
+		CapabilitiesAdd( bits_CAP_INNATE_RANGE_ATTACK1 );
+		m_pVehicleInterface->Weapon_PrimaryRanges( &flMinRange, &flMaxRange );
+
+		// Ensure the look distances is long enough
+		if ( m_flDistTooFar < flMaxRange || GetSenses()->GetDistLook() < flMaxRange )
+		{
+			m_flDistTooFar = flMaxRange;
+			SetDistLook( flMaxRange );
+		}
+	}
+
+	if ( m_pVehicleInterface->NPC_HasSecondaryWeapon() )
+	{
+		CapabilitiesAdd( bits_CAP_INNATE_RANGE_ATTACK2 );
+		m_pVehicleInterface->Weapon_SecondaryRanges( &flMinRange, &flMaxRange );
+
+		// Ensure the look distances is long enough
+		if ( m_flDistTooFar < flMaxRange || GetSenses()->GetDistLook() < flMaxRange )
+		{
+			m_flDistTooFar = flMaxRange;
+			SetDistLook( flMaxRange );
+		}
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Tell the driver to stop firing at targets
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::InputStopFiring( inputdata_t &inputdata )
+{
+	// If the vehicle has a weapon, set our capability
+	CapabilitiesRemove( bits_CAP_INNATE_RANGE_ATTACK1 );
+	CapabilitiesRemove( bits_CAP_INNATE_RANGE_ATTACK2 );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_VehicleDriver::InputGotoPathCorner( inputdata_t &inputdata )
+{
+	string_t iszPathName = inputdata.value.StringID();
+	if ( iszPathName != NULL_STRING )
+	{
+		CBaseEntity *pEntity = gEntList.FindEntityByName( NULL, iszPathName );
+		if ( !pEntity )
+		{
+			Warning("npc_vehicledriver %s couldn't find entity named %s\n", STRING(GetEntityName()), STRING(iszPathName) );
+			return;
+		}
+
+		ClearWaypoints();
+
+		// Drive to the point
+		SetGoalEnt( pEntity );
+		if ( m_NPCState == NPC_STATE_IDLE )
+		{
+			SetState( NPC_STATE_ALERT );
+		}
+		SetCondition( COND_PROVOKED );
+
+		// Force him to start forward
+		InputStartForward( inputdata );
+	}
+}
+
+//-----------------------------------------------------------------------------
+//
+// Schedules
+//
+//-----------------------------------------------------------------------------
+
+AI_BEGIN_CUSTOM_NPC( npc_vehicledriver, CNPC_VehicleDriver )
+
+	//Tasks
+	DECLARE_TASK( TASK_VEHICLEDRIVER_GET_PATH )
+	
+	// Schedules
+	DEFINE_SCHEDULE
+	(
+		SCHED_VEHICLEDRIVER_INACTIVE,
+
+		"	Tasks"
+		"		TASK_WAIT_INDEFINITE	0"
+		""
+		"	Interrupts"
+		"		COND_PROVOKED"
+	)
+
+	DEFINE_SCHEDULE
+	(
+		SCHED_VEHICLEDRIVER_COMBAT_WAIT,
+
+		"	Tasks"
+		"		TASK_WAIT				5"
+		""
+		"	Interrupts"
+		"		COND_NEW_ENEMY"
+		"		COND_LIGHT_DAMAGE"
+		"		COND_HEAVY_DAMAGE"
+		"		COND_PROVOKED"
+		"		COND_CAN_RANGE_ATTACK1"
+		"		COND_CAN_RANGE_ATTACK2"
+	)
+
+	DEFINE_SCHEDULE
+	(
+		SCHED_VEHICLEDRIVER_DRIVE_PATH,
+
+		"	Tasks"
+		"		TASK_VEHICLEDRIVER_GET_PATH		0"
+		"		TASK_WALK_PATH					9999"
+		"		TASK_WAIT_FOR_MOVEMENT			0"
+		"		TASK_WAIT_PVS					0"
+		""
+		"	Interrupts"
+		"		COND_NEW_ENEMY"
+		"		COND_PROVOKED"
+	)
+
+AI_END_CUSTOM_NPC()