First version of the SOurce SDK 2013

1 files changed, 1932 insertions, 0 deletions

diff --git a/mp/src/game/server/ai_baseactor.cpp b/mp/src/game/server/ai_baseactor.cpp
new file mode 100644
index 00000000..6a21eb86
--- /dev/null
+++ b/mp/src/game/server/ai_baseactor.cpp
@@ -0,0 +1,1932 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//

+//

+// Purpose:

+//

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

+

+#include "cbase.h"

+

+#include "sceneentity.h"

+#include "choreoevent.h"

+#include "choreoscene.h"

+#include "choreoactor.h"

+#include "ai_baseactor.h"

+#include "ai_navigator.h"

+#include "saverestore_utlvector.h"

+#include "bone_setup.h"

+#include "physics_npc_solver.h"

+

+// memdbgon must be the last include file in a .cpp file!!!

+#include "tier0/memdbgon.h"

+

+ConVar flex_minplayertime( "flex_minplayertime", "5" );

+ConVar flex_maxplayertime( "flex_maxplayertime", "7" );

+ConVar flex_minawaytime( "flex_minawaytime", "0.5" );

+ConVar flex_maxawaytime( "flex_maxawaytime", "1.0" );

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

+ConVar ai_debug_expressions( "ai_debug_expressions", "0", FCVAR_NONE, "Show random expression decisions for NPCs." );

+static ConVar scene_showfaceto( "scene_showfaceto", "0", FCVAR_ARCHIVE, "When playing back, show the directions of faceto events." );

+

+

+BEGIN_DATADESC( CAI_BaseActor )

+

+	DEFINE_FIELD( m_fLatchedPositions, FIELD_INTEGER ),

+	DEFINE_FIELD( m_latchedEyeOrigin, FIELD_VECTOR ),

+	DEFINE_FIELD( m_latchedEyeDirection, FIELD_VECTOR ),

+	DEFINE_FIELD( m_latchedHeadDirection, FIELD_VECTOR ),

+	DEFINE_FIELD( m_goalHeadDirection, FIELD_VECTOR ),

+	DEFINE_FIELD( m_goalHeadInfluence, FIELD_FLOAT ),

+	DEFINE_FIELD( m_goalSpineYaw, FIELD_FLOAT ),

+	DEFINE_FIELD( m_goalBodyYaw, FIELD_FLOAT ),

+	DEFINE_FIELD( m_goalHeadCorrection, FIELD_VECTOR ),

+	DEFINE_FIELD( m_flBlinktime, FIELD_TIME ),

+	DEFINE_FIELD( m_hLookTarget, FIELD_EHANDLE ),

+	DEFINE_UTLVECTOR( m_lookQueue,	FIELD_EMBEDDED ), 

+	DEFINE_UTLVECTOR( m_randomLookQueue, FIELD_EMBEDDED ),

+	DEFINE_UTLVECTOR( m_syntheticLookQueue,	FIELD_EMBEDDED ), 

+	DEFINE_FIELD( m_flNextRandomLookTime, FIELD_TIME ),

+	DEFINE_FIELD( m_iszExpressionScene, FIELD_STRING ),

+	DEFINE_FIELD( m_hExpressionSceneEnt, FIELD_EHANDLE ),

+	DEFINE_FIELD( m_flNextRandomExpressionTime, FIELD_TIME ),

+	DEFINE_FIELD( m_iszIdleExpression, FIELD_STRING ),

+	DEFINE_FIELD( m_iszAlertExpression, FIELD_STRING ),

+	DEFINE_FIELD( m_iszCombatExpression, FIELD_STRING ),

+	DEFINE_FIELD( m_iszDeathExpression, FIELD_STRING ),

+	//DEFINE_FIELD( m_ParameterBodyTransY, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_ParameterBodyTransX, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_ParameterBodyLift, FIELD_INTEGER ),

+	DEFINE_FIELD( m_ParameterBodyYaw, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_ParameterBodyPitch, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_ParameterBodyRoll, FIELD_INTEGER ),

+	DEFINE_FIELD( m_ParameterSpineYaw, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_ParameterSpinePitch, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_ParameterSpineRoll, FIELD_INTEGER ),

+	DEFINE_FIELD( m_ParameterNeckTrans, FIELD_INTEGER ),

+	DEFINE_FIELD( m_ParameterHeadYaw, FIELD_INTEGER ),

+	DEFINE_FIELD( m_ParameterHeadPitch, FIELD_INTEGER ),

+	DEFINE_FIELD( m_ParameterHeadRoll, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_FlexweightMoveRightLeft, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_FlexweightMoveForwardBack, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_FlexweightMoveUpDown, FIELD_INTEGER ),

+	DEFINE_FIELD( m_FlexweightBodyRightLeft, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_FlexweightBodyUpDown, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_FlexweightBodyTilt, FIELD_INTEGER ),

+	DEFINE_FIELD( m_FlexweightChestRightLeft, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_FlexweightChestUpDown, FIELD_INTEGER ),

+	//DEFINE_FIELD( m_FlexweightChestTilt, FIELD_INTEGER ),

+	DEFINE_FIELD( m_FlexweightHeadForwardBack, FIELD_INTEGER ),

+	DEFINE_FIELD( m_FlexweightHeadRightLeft, FIELD_INTEGER ),

+	DEFINE_FIELD( m_FlexweightHeadUpDown, FIELD_INTEGER ),

+	DEFINE_FIELD( m_FlexweightHeadTilt, FIELD_INTEGER ),

+

+	DEFINE_FIELD( m_ParameterGestureHeight, FIELD_INTEGER ),

+	DEFINE_FIELD( m_ParameterGestureWidth, FIELD_INTEGER ),

+	DEFINE_FIELD( m_FlexweightGestureUpDown, FIELD_INTEGER ),

+	DEFINE_FIELD( m_FlexweightGestureRightLeft, FIELD_INTEGER ),

+	DEFINE_FIELD( m_flAccumYawDelta, FIELD_FLOAT ),

+	DEFINE_FIELD( m_flAccumYawScale, FIELD_FLOAT ),

+

+	DEFINE_ARRAY( m_flextarget, FIELD_FLOAT, 64 ),

+

+	DEFINE_KEYFIELD( m_bDontUseSemaphore, FIELD_BOOLEAN, "DontUseSpeechSemaphore" ),

+

+	DEFINE_KEYFIELD( m_iszExpressionOverride, FIELD_STRING, "ExpressionOverride" ),

+

+	DEFINE_EMBEDDEDBYREF( m_pExpresser ),

+

+	DEFINE_INPUTFUNC( FIELD_STRING,	"SetExpressionOverride",	InputSetExpressionOverride ),

+

+END_DATADESC()

+

+

+BEGIN_SIMPLE_DATADESC( CAI_InterestTarget_t )

+	DEFINE_FIELD( m_eType,		FIELD_INTEGER ),

+	DEFINE_FIELD( m_hTarget,		FIELD_EHANDLE ),

+	DEFINE_FIELD( m_vecPosition,	FIELD_POSITION_VECTOR ),

+	DEFINE_FIELD( m_flStartTime,	FIELD_TIME ),

+	DEFINE_FIELD( m_flEndTime,	FIELD_TIME ),

+	DEFINE_FIELD( m_flRamp,		FIELD_FLOAT ),

+	DEFINE_FIELD( m_flInterest,	FIELD_FLOAT ),

+END_DATADESC()

+

+

+

+

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

+// Purpose: clear out latched state

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

+void CAI_BaseActor::StudioFrameAdvance ()

+{

+	// clear out head and eye latched values

+	m_fLatchedPositions &= ~(HUMANOID_LATCHED_ALL);

+

+	BaseClass::StudioFrameAdvance();

+}

+

+

+void CAI_BaseActor::Precache()

+{

+	BaseClass::Precache();

+

+	if ( NULL_STRING != m_iszExpressionOverride )

+	{

+		PrecacheInstancedScene( STRING( m_iszExpressionOverride ) );

+	}

+

+	if ( m_iszIdleExpression != NULL_STRING )

+	{

+		PrecacheInstancedScene( STRING(m_iszIdleExpression ) );

+	}

+

+	if ( m_iszCombatExpression != NULL_STRING )

+	{

+		PrecacheInstancedScene( STRING(m_iszCombatExpression ) );

+	}

+

+	if ( m_iszAlertExpression != NULL_STRING )

+	{

+		PrecacheInstancedScene( STRING(m_iszAlertExpression) );

+	}

+

+	if ( m_iszDeathExpression != NULL_STRING )

+	{

+		PrecacheInstancedScene( STRING(m_iszDeathExpression) );

+	}

+}

+

+static char const *g_ServerSideFlexControllers[] = 

+{

+	"body_rightleft",

+	//"body_updown",

+	//"body_tilt",

+	"chest_rightleft",

+	//"chest_updown",

+	//"chest_tilt",

+	"head_forwardback",

+	"head_rightleft",

+	"head_updown",

+	"head_tilt",

+

+	"gesture_updown",

+	"gesture_rightleft"

+};

+

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

+// Purpose: Static method 

+// Input  : *szName - 

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

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

+bool CAI_BaseActor::IsServerSideFlexController( char const *szName )

+{

+	int c = ARRAYSIZE( g_ServerSideFlexControllers );

+	for ( int i = 0; i < c; ++i )

+	{

+		if ( !Q_stricmp( szName, g_ServerSideFlexControllers[ i ] ) )

+			return true;

+	}

+	return false;

+}

+

+void CAI_BaseActor::SetModel( const char *szModelName )

+{

+	BaseClass::SetModel( szModelName );

+

+	//Init( m_ParameterBodyTransY, "body_trans_Y" );

+	//Init( m_ParameterBodyTransX, "body_trans_X" );

+	//Init( m_ParameterBodyLift, "body_lift" );

+	Init( m_ParameterBodyYaw, "body_yaw" );

+	//Init( m_ParameterBodyPitch, "body_pitch" );

+	//Init( m_ParameterBodyRoll, "body_roll" );

+	Init( m_ParameterSpineYaw, "spine_yaw" );

+	//Init( m_ParameterSpinePitch, "spine_pitch" );

+	//Init( m_ParameterSpineRoll, "spine_roll" );

+	Init( m_ParameterNeckTrans, "neck_trans" );

+	Init( m_ParameterHeadYaw, "head_yaw" );

+	Init( m_ParameterHeadPitch, "head_pitch" );

+	Init( m_ParameterHeadRoll, "head_roll" );

+

+	//Init( m_FlexweightMoveRightLeft, "move_rightleft" );

+	//Init( m_FlexweightMoveForwardBack, "move_forwardback" );

+	//Init( m_FlexweightMoveUpDown, "move_updown" );

+	Init( m_FlexweightBodyRightLeft, "body_rightleft" );

+	//Init( m_FlexweightBodyUpDown, "body_updown" );

+	//Init( m_FlexweightBodyTilt, "body_tilt" );

+	Init( m_FlexweightChestRightLeft, "chest_rightleft" );

+	//Init( m_FlexweightChestUpDown, "chest_updown" );

+	//Init( m_FlexweightChestTilt, "chest_tilt" );

+	Init( m_FlexweightHeadForwardBack, "head_forwardback" );

+	Init( m_FlexweightHeadRightLeft, "head_rightleft" );

+	Init( m_FlexweightHeadUpDown, "head_updown" );

+	Init( m_FlexweightHeadTilt, "head_tilt" );

+

+	Init( m_ParameterGestureHeight, "gesture_height" );

+	Init( m_ParameterGestureWidth, "gesture_width" );

+	Init( m_FlexweightGestureUpDown, "gesture_updown" );

+	Init( m_FlexweightGestureRightLeft, "gesture_rightleft" );

+}

+

+

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

+// Purpose: 

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

+

+bool CAI_BaseActor::StartSceneEvent( CSceneEventInfo *info, CChoreoScene *scene, CChoreoEvent *event, CChoreoActor *actor, CBaseEntity *pTarget )

+{

+	Assert( info );

+	Assert( info->m_pScene );

+	Assert( info->m_pEvent );

+

+	// FIXME: this code looks duplicated

+	switch ( info->m_pEvent->GetType() )

+	{

+	case CChoreoEvent::FACE: 

+		{

+			return BaseClass::StartSceneEvent( info, scene, event, actor, pTarget );

+		}

+		break;

+

+	case CChoreoEvent::GENERIC:

+		{

+			if (stricmp( event->GetParameters(), "AI_BLINK") == 0)

+			{

+				info->m_nType = SCENE_AI_BLINK;

+				// blink eyes

+				Blink();

+				// don't blink for duration, or next random blink time

+				float flDuration = (event->GetEndTime() - scene->GetTime());

+				m_flBlinktime = gpGlobals->curtime + MAX( flDuration, random->RandomFloat( 1.5, 4.5 ) ); 

+			}

+			else if (stricmp( event->GetParameters(), "AI_HOLSTER") == 0)

+			{

+				// FIXME: temp code for test

+				info->m_nType = SCENE_AI_HOLSTER;

+				info->m_iLayer = HolsterWeapon();

+				return true;

+			}

+			else if (stricmp( event->GetParameters(), "AI_UNHOLSTER") == 0)

+			{

+				// FIXME: temp code for test

+				info->m_nType = SCENE_AI_UNHOLSTER;

+				info->m_iLayer = UnholsterWeapon();

+				return true;

+			}

+			else if (stricmp( event->GetParameters(), "AI_AIM") == 0)

+			{

+				info->m_nType = SCENE_AI_AIM;

+				info->m_hTarget = pTarget;

+			}

+			else if (stricmp( event->GetParameters(), "AI_RANDOMLOOK") == 0)

+			{

+				info->m_nType = SCENE_AI_RANDOMLOOK;

+				info->m_flNext = 0.0;

+			}

+			else if (stricmp( event->GetParameters(), "AI_RANDOMFACEFLEX") == 0)

+			{

+				info->m_nType = SCENE_AI_RANDOMFACEFLEX;

+				info->m_flNext = 0.0;

+				info->InitWeight( this );

+			}

+			else if (stricmp( event->GetParameters(), "AI_RANDOMHEADFLEX") == 0)

+			{

+				info->m_nType = SCENE_AI_RANDOMHEADFLEX;

+				info->m_flNext = 0.0;

+			}	

+			else if (stricmp( event->GetParameters(), "AI_IGNORECOLLISION") == 0)

+			{

+				CBaseEntity *pTarget = FindNamedEntity( event->GetParameters2( ) );

+

+				if (pTarget)

+				{

+					info->m_nType = SCENE_AI_IGNORECOLLISION;

+					info->m_hTarget = pTarget;

+					float remaining = event->GetEndTime() - scene->GetTime();

+					NPCPhysics_CreateSolver( this, pTarget, true, remaining );

+					info->m_flNext = gpGlobals->curtime + remaining;

+					return true;

+				}

+				else

+				{

+					Warning( "CSceneEntity %s unable to find actor named \"%s\"\n", scene->GetFilename(), event->GetParameters2() );

+					return false;

+				}

+			}

+			else if (stricmp( event->GetParameters(), "AI_DISABLEAI") == 0)

+			{

+				info->m_nType = SCENE_AI_DISABLEAI;

+			}

+			else

+			{

+				return BaseClass::StartSceneEvent( info, scene, event, actor, pTarget );

+			}

+			return true;

+		}

+		break;

+

+	default:

+		return BaseClass::StartSceneEvent( info, scene, event, actor, pTarget );

+	}

+}

+

+

+bool CAI_BaseActor::ProcessSceneEvent( CSceneEventInfo *info, CChoreoScene *scene, CChoreoEvent *event )

+{

+	Assert( info );

+	Assert( info->m_pScene );

+	Assert( info->m_pEvent );

+

+	// FIXME: this code looks duplicated

+	switch ( info->m_pEvent->GetType() )

+	{

+	case CChoreoEvent::FACE: 

+		{

+			// make sure target exists

+			if (info->m_hTarget == NULL)

+				return false;

+

+			bool bInScene = false;

+			

+			// lockbodyfacing is designed to run on top of both normal AI and on top of

+			// scripted_sequences.  By allowing torso turns during post-idles, pre-idles, 

+			// act-busy's, scripted_sequences, normal AI movements, etc., it increases 

+			// the functionality of those AI features without breaking their assuptions 

+			// that the entity won't be made to "turn" by something outside of those 

+			// AI's control.

+			// lockbody facing is also usefull when npcs are moving and you want them to turn

+			// towards something but still walk in the direction of travel.

+			if (!event->IsLockBodyFacing())

+				bInScene = EnterSceneSequence( scene, event, true );

+

+			// make sure we're still able to play this command

+			if (!info->m_bStarted)

+			{

+				info->m_flInitialYaw = GetLocalAngles().y;

+				info->m_flTargetYaw = info->m_flInitialYaw;

+				info->m_flFacingYaw = info->m_flInitialYaw;

+				if (IsMoving())

+				{

+					info->m_flWeight = 1.0;

+				}

+				else

+				{

+					info->m_flWeight = 0.0;

+				}

+			}

+

+			// lock in place if aiming at self

+			if (info->m_hTarget == this)

+			{

+				return true;

+			}

+

+			if (!bInScene || info->m_bIsMoving != IsMoving())

+			{

+				info->m_flInitialYaw = GetLocalAngles().y;

+			}

+			info->m_bIsMoving = IsMoving();

+

+			// Msg("%f : %f - %f\n", scene->GetTime(), event->GetStartTime(), event->GetEndTime() );

+			float flTime = clamp( scene->GetTime(), event->GetStartTime(), event->GetEndTime() - 0.1f );

+			float intensity = event->GetIntensity( flTime );

+

+			// clamp in-ramp to 0.5 seconds

+			float flDuration = scene->GetTime() - event->GetStartTime();

+			float flMaxIntensity = flDuration < 0.5f ? SimpleSpline( flDuration / 0.5f ) : 1.0f;

+			intensity = clamp( intensity, 0.0f, flMaxIntensity );

+

+			if (bInScene && info->m_bIsMoving)

+			{

+				info->m_flInitialYaw = GetLocalAngles().y;

+			}

+

+			if (!event->IsLockBodyFacing())

+			{

+				if (!info->m_bIsMoving && bInScene)

+				{

+					AccumulateIdealYaw( info->m_flFacingYaw, intensity );

+				}

+			}

+

+			float diff;

+			float dir;

+			float flSpineYaw;

+			float flBodyYaw;

+			

+			// move upper body to account for missing body yaw

+			diff = UTIL_AngleDiff( info->m_flTargetYaw, GetLocalAngles().y );

+			if (diff < 0)

+			{

+				diff = -diff;

+				dir = -1;

+			}

+			else

+			{

+				dir = 1;

+			}

+			flSpineYaw = MIN( diff, 30 );

+			flBodyYaw = MIN( diff - flSpineYaw, 30 );

+			m_goalSpineYaw = m_goalSpineYaw * (1.0 - intensity) + intensity * flSpineYaw * dir;

+			m_goalBodyYaw = m_goalBodyYaw * (1.0 - intensity) + intensity * flBodyYaw * dir;

+

+			/*

+			NDebugOverlay::YawArrow( GetAbsOrigin(), GetLocalAngles().y, 64, 16, 255, 255, 255, 0, true, 0.1 );

+			NDebugOverlay::YawArrow( GetAbsOrigin() + Vector( 0, 0, 8 ), GetLocalAngles().y + m_goalBodyYaw, 64, 16, 255, 128, 128, 0, true, 0.1 );

+			NDebugOverlay::YawArrow( GetAbsOrigin() + Vector( 0, 0, 16 ), GetLocalAngles().y + m_goalSpineYaw, 64, 16, 128, 255, 128, 0, true, 0.1 );

+			NDebugOverlay::YawArrow( GetAbsOrigin() + Vector( 0, 0, 24 ), info->m_flTargetYaw, 64, 16, 128, 128, 255, 0, true, 0.1 );

+			*/

+

+			CAI_BaseNPC *pGoalNpc = info->m_hTarget->MyNPCPointer();

+

+			float goalYaw = GetLocalAngles().y;

+			

+			if ( pGoalNpc )

+			{

+				goalYaw = CalcIdealYaw( pGoalNpc->FacingPosition() );

+			}

+			else

+			{

+				goalYaw = CalcIdealYaw( info->m_hTarget->EyePosition() );

+			}

+

+			if (developer.GetInt() > 0 && scene_showfaceto.GetBool())

+			{

+				NDebugOverlay::YawArrow( GetAbsOrigin() + Vector( 0, 0, 1 ), goalYaw, 8 + 32 * intensity, 8, 255, 255, 255, 0, true, 0.12 );

+			}

+

+			diff = UTIL_AngleDiff( goalYaw, info->m_flInitialYaw ) * intensity;

+			dir = 1.0;

+

+			// debounce delta a bit

+			info->m_flTargetYaw = UTIL_AngleMod( info->m_flInitialYaw + diff );

+

+			if (diff < 0)

+			{

+				diff = -diff;

+				dir = -1;

+			}

+

+			// calc how much to use the spine for turning

+			float spineintensity = (1.0 - MAX( 0.0, (intensity - 0.5) / 0.5 ));

+			// force spine to full if not in scene or locked

+			if (!bInScene || event->IsLockBodyFacing() )

+			{

+				spineintensity = 1.0;

+			}

+

+			flSpineYaw = MIN( diff * spineintensity, 30 );

+			flBodyYaw = MIN( diff * spineintensity - flSpineYaw, 30 );

+			info->m_flFacingYaw = info->m_flInitialYaw + (diff - flBodyYaw - flSpineYaw) * dir;

+

+			if (!event->IsLockBodyFacing())

+			{

+				AddFacingTarget( info->m_hTarget, intensity, 0.2 ); // facing targets are lagged by one frame

+			}

+			return true;

+		}

+	case CChoreoEvent::GENERIC:

+		{

+			switch(info->m_nType)

+			{

+				case SCENE_AI_BLINK:

+					{

+						// keep eyes not blinking for duration

+						float flDuration = (event->GetEndTime() - scene->GetTime());

+						m_flBlinktime = MAX( m_flBlinktime, gpGlobals->curtime + flDuration );

+					}

+					return true;

+				case SCENE_AI_HOLSTER:

+					{

+					}

+					return true;

+				case SCENE_AI_UNHOLSTER:

+					{

+					}

+					return true;

+				case SCENE_AI_AIM:

+					{

+						if ( info->m_hTarget )

+						{

+							Vector vecAimTargetLoc = info->m_hTarget->EyePosition();

+							Vector vecAimDir = vecAimTargetLoc - EyePosition();

+

+							VectorNormalize( vecAimDir );

+							SetAim( vecAimDir);

+						}

+					}

+					return true;

+				case SCENE_AI_RANDOMLOOK:

+					{

+						if (info->m_flNext < gpGlobals->curtime)

+						{

+							info->m_flNext = gpGlobals->curtime + PickLookTarget( m_syntheticLookQueue ) - 0.4;

+							if (m_syntheticLookQueue.Count() > 0)

+							{

+								float flDuration = (event->GetEndTime() - scene->GetTime());

+								int i = m_syntheticLookQueue.Count() - 1;

+								m_syntheticLookQueue[i].m_flEndTime = MIN( m_syntheticLookQueue[i].m_flEndTime, gpGlobals->curtime + flDuration );

+								m_syntheticLookQueue[i].m_flInterest = 0.1;

+							}

+						}

+					}

+					return true;

+				case SCENE_AI_RANDOMFACEFLEX:

+					return RandomFaceFlex( info, scene, event );

+				case SCENE_AI_RANDOMHEADFLEX:

+					return true;

+				case SCENE_AI_IGNORECOLLISION:

+					if (info->m_hTarget && info->m_flNext < gpGlobals->curtime)

+					{

+						float remaining = event->GetEndTime() - scene->GetTime();

+						NPCPhysics_CreateSolver( this, info->m_hTarget, true, remaining );

+						info->m_flNext = gpGlobals->curtime + remaining;

+					}

+

+					// FIXME: needs to handle scene pause

+					return true;

+				case SCENE_AI_DISABLEAI:

+					if (!(GetState() == NPC_STATE_SCRIPT  || IsCurSchedule( SCHED_SCENE_GENERIC )) )

+					{

+						EnterSceneSequence( scene, event );

+					}

+					return true;

+				default:

+					return false;

+			}

+		}

+		break;

+	default:

+		return BaseClass::ProcessSceneEvent( info, scene, event );

+	}

+}

+

+

+bool CAI_BaseActor::RandomFaceFlex( CSceneEventInfo *info, CChoreoScene *scene, CChoreoEvent *event )

+{

+	if (info->m_flNext < gpGlobals->curtime)

+	{

+		const flexsettinghdr_t *pSettinghdr = ( const flexsettinghdr_t * )FindSceneFile( event->GetParameters2() );

+		if (pSettinghdr == NULL)

+		{

+			pSettinghdr = ( const flexsettinghdr_t * )FindSceneFile( "random" );

+		}

+		if ( pSettinghdr )

+		{

+			info->m_flNext = gpGlobals->curtime + random->RandomFloat( 0.3, 0.5 ) * (30.0 / pSettinghdr->numflexsettings);

+

+			flexsetting_t const *pSetting = NULL;

+			pSetting = pSettinghdr->pSetting( random->RandomInt( 0, pSettinghdr->numflexsettings - 1 ) );

+

+			flexweight_t *pWeights = NULL;

+			int truecount = pSetting->psetting( (byte *)pSettinghdr, 0, &pWeights );

+			if ( !pWeights )

+				return false;

+

+			int i;

+			for (i = 0; i < truecount; i++, pWeights++)

+			{

+				// Translate to local flex controller

+				// this is translating from the settings's local index to the models local index

+				int index = FlexControllerLocalToGlobal( pSettinghdr, pWeights->key );

+

+				// FIXME: this is supposed to blend based on pWeight->influence, but the order is wrong...

+				// float value = GetFlexWeight( index ) * (1 - scale * pWeights->influence) + scale * pWeights->weight;

+

+				// Add scaled weighting in to total

+				m_flextarget[ index ] = pWeights->weight;

+			}

+		}

+		else

+		{

+			return false;

+		}

+	}

+

+	// adjust intensity if this is a background scene and there's other flex animations playing

+	float intensity = info->UpdateWeight( this ) * event->GetIntensity( scene->GetTime() );

+

+	// slide it up.

+	for (LocalFlexController_t i = LocalFlexController_t(0); i < GetNumFlexControllers(); i++)

+	{

+		float weight = GetFlexWeight( i );

+

+		if (weight != m_flextarget[i])

+		{

+			float delta = (m_flextarget[i] - weight) / random->RandomFloat( 2.0, 4.0 );

+			weight = weight + delta * intensity;

+		}

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

+		SetFlexWeight( i, weight );

+	}

+

+	return true;

+}

+

+

+

+

+

+bool CAI_BaseActor::ClearSceneEvent( CSceneEventInfo *info, bool fastKill, bool canceled )

+{

+	Assert( info );

+	Assert( info->m_pScene );

+	Assert( info->m_pEvent );

+

+	// FIXME: this code looks duplicated

+	switch ( info->m_pEvent->GetType() )

+	{

+	case CChoreoEvent::FACE: 

+		{

+			return BaseClass::ClearSceneEvent( info, fastKill, canceled );

+		}

+		break;

+	default:

+		return BaseClass::ClearSceneEvent( info, fastKill, canceled );

+	}

+}

+

+

+

+bool CAI_BaseActor::CheckSceneEventCompletion( CSceneEventInfo *info, float currenttime, CChoreoScene *scene, CChoreoEvent *event )

+{

+	Assert( info );

+	Assert( info->m_pScene );

+	Assert( info->m_pEvent );

+

+	switch ( event->GetType() )

+	{

+	case CChoreoEvent::GENERIC:

+		{

+			switch( info->m_nType)

+			{

+			case SCENE_AI_HOLSTER:

+			case SCENE_AI_UNHOLSTER:

+				{

+					if (info->m_iLayer == -1)

+					{

+						return true;

+					}

+					float preload = event->GetEndTime() - currenttime;

+					if (preload < 0)

+					{

+						return true;

+					}

+					float t = (1.0 - GetLayerCycle( info->m_iLayer )) * SequenceDuration( GetLayerSequence( info->m_iLayer ) );

+

+					return (t <= preload);

+				}

+			}

+		}

+	}

+

+	return BaseClass::CheckSceneEventCompletion( info, currenttime, scene, event );

+}

+

+

+

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

+// Purpose: clear out latched state

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

+void CAI_BaseActor::SetViewtarget( const Vector &viewtarget )

+{

+	// clear out eye latch

+	m_fLatchedPositions &= ~HUMANOID_LATCHED_EYE;

+

+	BaseClass::SetViewtarget( viewtarget );

+}

+

+

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

+// Purpose: Returns true position of the eyeballs

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

+void CAI_BaseActor::UpdateLatchedValues( ) 

+{ 

+	if (!(m_fLatchedPositions & HUMANOID_LATCHED_HEAD))

+	{

+		// set head latch

+		m_fLatchedPositions |= HUMANOID_LATCHED_HEAD;

+

+		if (!HasCondition( COND_IN_PVS ) || !GetAttachment( "eyes", m_latchedEyeOrigin, &m_latchedHeadDirection ))

+		{

+			m_latchedEyeOrigin = BaseClass::EyePosition( );

+			AngleVectors( GetLocalAngles(), &m_latchedHeadDirection );

+		}

+		// clear out eye latch

+		m_fLatchedPositions &= ~(HUMANOID_LATCHED_EYE);

+		// DevMsg( "eyeball %4f %4f %4f  : %3f %3f %3f\n", origin.x, origin.y, origin.z, angles.x, angles.y, angles.z );

+	}

+

+	if (!(m_fLatchedPositions & HUMANOID_LATCHED_EYE))

+	{

+		m_fLatchedPositions |= HUMANOID_LATCHED_EYE;

+

+		if ( CapabilitiesGet() & bits_CAP_ANIMATEDFACE )

+		{

+			m_latchedEyeDirection = GetViewtarget() - m_latchedEyeOrigin; 

+			VectorNormalize( m_latchedEyeDirection );

+		}

+		else

+		{

+			m_latchedEyeDirection = m_latchedHeadDirection;

+		}

+	}

+}

+

+

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

+// Purpose: Returns true position of the eyeballs

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

+Vector CAI_BaseActor::EyePosition( )

+{ 

+	UpdateLatchedValues();

+

+	return m_latchedEyeOrigin;

+}

+

+

+#define MIN_LOOK_TARGET_DIST 1.0f

+#define MAX_FULL_LOOK_TARGET_DIST 10.0f

+

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

+// Purpose: Returns true if target is in legal range of eye movement for the current head position

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

+bool CAI_BaseActor::ValidEyeTarget(const Vector &lookTargetPos)

+{

+	Vector vHeadDir = HeadDirection3D( );

+	Vector lookTargetDir	= lookTargetPos - EyePosition();

+	float flDist = VectorNormalize(lookTargetDir);

+

+	if (flDist < MIN_LOOK_TARGET_DIST)

+	{

+		return false;

+	}

+

+	// Only look if it doesn't crank my eyeballs too far

+	float dotPr = DotProduct(lookTargetDir, vHeadDir);

+	// DevMsg( "ValidEyeTarget( %4f %4f %4f )  %3f\n", lookTargetPos.x, lookTargetPos.y, lookTargetPos.z, dotPr );

+

+	if (dotPr > 0.259) // +- 75 degrees

+	// if (dotPr > 0.86) // +- 30 degrees

+	{

+		return true;

+	}

+	return false;

+}

+

+

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

+// Purpose: Returns true if target is in legal range of possible head movements

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

+bool CAI_BaseActor::ValidHeadTarget(const Vector &lookTargetPos)

+{

+	Vector vFacing = BodyDirection3D();

+	Vector lookTargetDir = lookTargetPos - EyePosition();

+	float flDist = VectorNormalize(lookTargetDir);

+

+	if (flDist < MIN_LOOK_TARGET_DIST)

+	{

+		return false;

+	}

+

+	// Only look if it doesn't crank my head too far

+	float dotPr = DotProduct(lookTargetDir, vFacing);

+	if (dotPr > 0 && fabs( lookTargetDir.z ) < 0.7) // +- 90 degrees side to side, +- 45 up/down

+	{

+		return true;

+	}

+	return false;

+}

+

+

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

+// Purpose: Returns how much to try to look at the target

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

+float CAI_BaseActor::HeadTargetValidity(const Vector &lookTargetPos)

+{

+	Vector vFacing = BodyDirection3D();

+

+	int iForward = LookupAttachment( "forward" );

+	if ( iForward > 0 )

+	{

+		Vector tmp1;

+		GetAttachment( iForward, tmp1, &vFacing, NULL, NULL );

+	}

+

+	Vector lookTargetDir = lookTargetPos - EyePosition();

+	float flDist = lookTargetDir.Length2D();

+	VectorNormalize(lookTargetDir);

+

+	if (flDist <= MIN_LOOK_TARGET_DIST)

+	{

+		return 0;

+	}

+

+	// Only look if it doesn't crank my head too far

+	float dotPr = DotProduct(lookTargetDir, vFacing);

+	// only look if target is within +-135 degrees

+	// scale 1..-0.707 == 1..1,  -.707..-1 == 1..0

+	// 	X * b + b = 1 == 1 / (X + 1) = b, 3.4142

+	float flInterest = clamp( 3.4142f + 3.4142f * dotPr, 0.f, 1.f );

+

+	// stop looking when point too close 

+	if (flDist < MAX_FULL_LOOK_TARGET_DIST)

+	{

+		flInterest = flInterest * (flDist - MIN_LOOK_TARGET_DIST ) / (MAX_FULL_LOOK_TARGET_DIST - MIN_LOOK_TARGET_DIST);

+	}

+

+	return flInterest;

+}

+

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

+// Purpose: Integrate head turn over time

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

+void CAI_BaseActor::SetHeadDirection( const Vector &vTargetPos, float flInterval)

+{

+	Assert(0); // Actors shouldn't be calling this, it doesn't do anything

+}

+

+float CAI_BaseActor::ClampWithBias( PoseParameter_t index, float value, float base )

+{

+	return EdgeLimitPoseParameter( (int)index, value, base );

+}

+

+

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

+// Purpose: Accumulate all the wanted yaw changes

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

+

+void CAI_BaseActor::AccumulateIdealYaw( float flYaw, float flIntensity )

+{

+	float diff = AngleDiff( flYaw, GetLocalAngles().y );

+	m_flAccumYawDelta += diff * flIntensity;

+	m_flAccumYawScale += flIntensity;

+}

+

+

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

+// Purpose: do any pending yaw movements

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

+

+bool CAI_BaseActor::SetAccumulatedYawAndUpdate( void )

+{

+	if (m_flAccumYawScale > 0.0)

+	{

+		float diff = m_flAccumYawDelta / m_flAccumYawScale;

+		float facing = GetLocalAngles().y + diff;

+

+		m_flAccumYawDelta = 0.0;

+		m_flAccumYawScale = 0.0;

+

+		if (IsCurSchedule( SCHED_SCENE_GENERIC ))

+		{

+			if (!IsMoving())

+			{

+				GetMotor()->SetIdealYawAndUpdate( facing );

+				return true;

+			}

+		}

+	}

+	return false;

+}

+

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

+// Purpose: match actors "forward" attachment to point in direction of vHeadTarget

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

+

+void CAI_BaseActor::UpdateBodyControl( )

+{

+	// FIXME: only during idle, or in response to accel/decel

+	//Set( m_ParameterBodyTransY, Get( m_FlexweightMoveRightLeft ) );

+	//Set( m_ParameterBodyTransX, Get( m_FlexweightMoveForwardBack ) );

+	//Set( m_ParameterBodyLift, Get( m_FlexweightMoveUpDown ) );

+	Set( m_ParameterBodyYaw, Get( m_FlexweightBodyRightLeft ) + m_goalBodyYaw );

+	//Set( m_ParameterBodyPitch, Get( m_FlexweightBodyUpDown ) );

+	//Set( m_ParameterBodyRoll, Get( m_FlexweightBodyTilt ) );

+	Set( m_ParameterSpineYaw, Get( m_FlexweightChestRightLeft ) + m_goalSpineYaw );

+	//Set( m_ParameterSpinePitch, Get( m_FlexweightChestUpDown ) );

+	//Set( m_ParameterSpineRoll, Get( m_FlexweightChestTilt ) );

+	Set( m_ParameterNeckTrans, Get( m_FlexweightHeadForwardBack ) );

+}

+

+

+static ConVar scene_clamplookat( "scene_clamplookat", "1", FCVAR_NONE, "Clamp head turns to a max of 20 degrees per think." );

+

+

+void CAI_BaseActor::UpdateHeadControl( const Vector &vHeadTarget, float flHeadInfluence )

+{

+	float flTarget;

+	float flLimit;

+

+	if (!(CapabilitiesGet() & bits_CAP_TURN_HEAD))

+	{

+		return;

+	}

+

+	// calc current animation head bias, movement needs to clamp accumulated with this

+	QAngle angBias;

+	QAngle vTargetAngles;

+

+	int iEyes = LookupAttachment( "eyes" );

+	int iChest = LookupAttachment( "chest" );

+	int iForward = LookupAttachment( "forward" );

+

+	matrix3x4_t eyesToWorld;

+	matrix3x4_t forwardToWorld, worldToForward;

+

+	if (iEyes <= 0 || iForward <= 0)

+	{

+		// Head control on model without "eyes" or "forward" attachment

+		// Most likely this is a cheaple or a generic_actor set to a model that doesn't support head/eye turning.

+		// DevWarning( "%s using model \"%s\" that doesn't support head turning\n", GetClassname(), STRING( GetModelName() ) );

+		CapabilitiesRemove( bits_CAP_TURN_HEAD );

+		return;

+	}

+

+	GetAttachment( iEyes, eyesToWorld );

+

+	GetAttachment( iForward, forwardToWorld );

+	MatrixInvert( forwardToWorld, worldToForward );

+

+	// Lookup chest attachment to do compounded range limit checks

+	if (iChest > 0)

+	{

+		matrix3x4_t chestToWorld, worldToChest;

+		GetAttachment( iChest, chestToWorld );

+		MatrixInvert( chestToWorld, worldToChest );

+		matrix3x4_t tmpM;

+		ConcatTransforms( worldToChest, eyesToWorld, tmpM );

+		MatrixAngles( tmpM, angBias );

+

+		angBias.y -= Get( m_ParameterHeadYaw );

+		angBias.x -= Get( m_ParameterHeadPitch );

+		angBias.z -= Get( m_ParameterHeadRoll );

+

+		/*

+		if ( (m_debugOverlays & OVERLAY_NPC_SELECTED_BIT) )

+		{

+			// Msg("bias %f %f %f\n", angBias.x, angBias.y, angBias.z );

+

+			Vector tmp1, tmp2;

+			

+			VectorTransform( Vector( 0, 0, 0), chestToWorld, tmp1 );

+			VectorTransform( Vector( 100, 0, 0), chestToWorld, tmp2 );

+			NDebugOverlay::Line( tmp1, tmp2, 0,0,255, false, 0.12 );

+

+			VectorTransform( Vector( 0, 0, 0), eyesToWorld, tmp1 );

+			VectorTransform( Vector( 100, 0, 0), eyesToWorld, tmp2 );

+			NDebugOverlay::Line( tmp1, tmp2, 0,0,255, false, 0.12 );

+

+			// NDebugOverlay::Line( EyePosition(), pEntity->EyePosition(), 0,0,255, false, 0.5);

+		}

+		*/

+	}

+	else

+	{

+		angBias.Init( 0, 0, 0 );

+	}

+

+	matrix3x4_t targetXform;

+	targetXform = forwardToWorld;

+	Vector vTargetDir = vHeadTarget - EyePosition();

+

+	if (scene_clamplookat.GetBool())

+	{

+		// scale down pitch when the target is behind the head

+		Vector vTargetLocal;

+		VectorNormalize( vTargetDir );

+		VectorIRotate( vTargetDir, forwardToWorld, vTargetLocal );

+		vTargetLocal.z *= clamp( vTargetLocal.x, 0.1f, 1.0f );

+		VectorNormalize( vTargetLocal );

+		VectorRotate( vTargetLocal, forwardToWorld, vTargetDir );

+

+		// clamp local influence when target is behind the head

+		flHeadInfluence = flHeadInfluence * clamp( vTargetLocal.x * 2.0f + 2.0f, 0.0f, 1.0f );

+	}

+

+	Studio_AlignIKMatrix( targetXform, vTargetDir );

+

+	matrix3x4_t headXform;

+	ConcatTransforms( worldToForward, targetXform, headXform );

+	MatrixAngles( headXform, vTargetAngles );

+

+	// partially debounce head goal

+	float s0 = 1.0 - flHeadInfluence + GetHeadDebounce() * flHeadInfluence;

+	float s1 = (1.0 - s0);

+	// limit velocity of head turns

+	m_goalHeadCorrection.x = UTIL_Approach( m_goalHeadCorrection.x * s0 + vTargetAngles.x * s1, m_goalHeadCorrection.x, 10.0 );

+	m_goalHeadCorrection.y = UTIL_Approach( m_goalHeadCorrection.y * s0 + vTargetAngles.y * s1, m_goalHeadCorrection.y, 30.0 );

+	m_goalHeadCorrection.z = UTIL_Approach( m_goalHeadCorrection.z * s0 + vTargetAngles.z * s1, m_goalHeadCorrection.z, 10.0 );

+

+	/*

+	if ( (m_debugOverlays & OVERLAY_NPC_SELECTED_BIT) )

+	{

+		// Msg( "yaw %.1f (%f) pitch %.1f (%.1f)\n", m_goalHeadCorrection.y, vTargetAngles.y, vTargetAngles.x, m_goalHeadCorrection.x );

+		// Msg( "yaw %.2f (goal %.2f) (influence %.2f) (flex %.2f)\n", flLimit, m_goalHeadCorrection.y, flHeadInfluence, Get( m_FlexweightHeadRightLeft ) );

+	}

+	*/

+

+	flTarget = m_goalHeadCorrection.y + Get( m_FlexweightHeadRightLeft );

+	flLimit = ClampWithBias( m_ParameterHeadYaw, flTarget, angBias.y );

+	/*

+	if ( (m_debugOverlays & OVERLAY_NPC_SELECTED_BIT) )

+	{

+		Msg( "yaw  %5.1f : (%5.1f : %5.1f) %5.1f (%5.1f)\n", flLimit, m_goalHeadCorrection.y, Get( m_FlexweightHeadRightLeft ), angBias.y, Get( m_ParameterHeadYaw ) );

+	}

+	*/

+	Set( m_ParameterHeadYaw, flLimit );

+

+	flTarget = m_goalHeadCorrection.x + Get( m_FlexweightHeadUpDown );

+	flLimit = ClampWithBias( m_ParameterHeadPitch, flTarget, angBias.x );

+	/*

+	if ( (m_debugOverlays & OVERLAY_NPC_SELECTED_BIT) )

+	{

+		Msg( "pitch %5.1f : (%5.1f : %5.1f) %5.1f (%5.1f)\n", flLimit, m_goalHeadCorrection.x, Get( m_FlexweightHeadUpDown ), angBias.x, Get( m_ParameterHeadPitch ) );

+	}

+	*/

+	Set( m_ParameterHeadPitch, flLimit );

+

+	flTarget = m_goalHeadCorrection.z + Get( m_FlexweightHeadTilt );

+	flLimit = ClampWithBias( m_ParameterHeadRoll, flTarget, angBias.z );

+	/*

+	if ( (m_debugOverlays & OVERLAY_NPC_SELECTED_BIT) )

+	{

+		Msg( "roll  %5.1f : (%5.1f : %5.1f) %5.1f (%5.1f)\n", flLimit, m_goalHeadCorrection.z, Get( m_FlexweightHeadTilt ), angBias.z, Get( m_ParameterHeadRoll ) );

+	}

+	*/

+	Set( m_ParameterHeadRoll, flLimit );

+}

+

+

+

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

+// Purpose : Calculate the NPC's eye direction in 2D world space

+// Input   :

+// Output  :

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

+Vector CAI_BaseActor::EyeDirection2D( void )

+{

+	Vector vEyeDirection = EyeDirection3D( );

+	vEyeDirection.z = 0;

+

+	vEyeDirection.AsVector2D().NormalizeInPlace();

+

+	return vEyeDirection;

+}

+

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

+// Purpose : Calculate the NPC's eye direction in 2D world space

+// Input   :

+// Output  :

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

+Vector CAI_BaseActor::EyeDirection3D( void )

+{

+	UpdateLatchedValues( );

+

+	return m_latchedEyeDirection;

+}

+

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

+// Purpose : Calculate the NPC's head direction in 2D world space

+// Input   :

+// Output  :

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

+Vector CAI_BaseActor::HeadDirection2D( void )

+{	

+	Vector vHeadDirection = HeadDirection3D();

+	vHeadDirection.z = 0;

+	vHeadDirection.AsVector2D().NormalizeInPlace();

+	return vHeadDirection;

+}

+

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

+// Purpose : Calculate the NPC's head direction in 3D world space

+// Input   :

+// Output  :

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

+Vector CAI_BaseActor::HeadDirection3D( )

+{	

+	UpdateLatchedValues( );

+

+	return m_latchedHeadDirection;

+}

+

+

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

+// Purpose:

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

+bool CAI_BaseActor::HasActiveLookTargets( void )

+{

+	return m_lookQueue.Count() != 0;

+}

+

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

+// Purpose: Clear any active look targets for the specified entity

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

+void CAI_BaseActor::ClearLookTarget( CBaseEntity *pTarget )

+{

+	int iIndex = m_lookQueue.Find( pTarget );

+	if ( iIndex != m_lookQueue.InvalidIndex() )

+	{

+		m_lookQueue.Remove(iIndex);

+	}

+

+	iIndex = m_randomLookQueue.Find( pTarget );

+	if ( iIndex != m_randomLookQueue.InvalidIndex() )

+	{

+		m_randomLookQueue.Remove(iIndex);

+

+		// Figure out the new random look time

+		m_flNextRandomLookTime = gpGlobals->curtime + 1.0;

+		for (int i = 0; i < m_randomLookQueue.Count(); i++)

+		{

+			if ( m_randomLookQueue[i].m_flEndTime > m_flNextRandomLookTime )

+			{

+				m_flNextRandomLookTime = m_randomLookQueue[i].m_flEndTime + 0.4;

+			}

+		}

+	}

+}

+

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

+// Purpose: Look at other NPCs and clients from time to time

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

+float CAI_BaseActor::PickLookTarget( bool bExcludePlayers, float minTime, float maxTime )

+{

+	return PickLookTarget( m_randomLookQueue, bExcludePlayers, minTime, maxTime );

+}

+

+float CAI_BaseActor::PickLookTarget( CAI_InterestTarget &queue, bool bExcludePlayers, float minTime, float maxTime )

+{

+	AILookTargetArgs_t args;

+	

+	args.vTarget			= vec3_invalid;

+	args.flDuration			= random->RandomFloat( minTime, maxTime );

+	args.flInfluence		= random->RandomFloat( 0.3, 0.5 );

+	args.flRamp				= random->RandomFloat( 0.2, 0.4 );

+	args.bExcludePlayers	= bExcludePlayers;

+	args.pQueue				= &queue;

+	

+	bool foundLookTarget = true;

+	

+	if ( !PickTacticalLookTarget( &args ) )

+	{

+		if ( !PickRandomLookTarget( &args ) )

+		{

+			foundLookTarget = false;

+		}

+	}

+	

+	if ( !foundLookTarget )

+	{

+		// DevMsg("nothing to see\n" );

+		MakeRandomLookTarget( &args, minTime, maxTime );

+	}

+	

+	// See if derived NPCs want to do anything with this look target before I use it

+	OnSelectedLookTarget( &args );

+

+	if ( args.hTarget != NULL )

+	{

+		Assert( args.vTarget == vec3_invalid );

+		queue.Add( args.hTarget, args.flInfluence, args.flDuration, args.flRamp );

+	}

+	else

+	{

+		Assert( args.vTarget != vec3_invalid );

+		queue.Add( args.vTarget, args.flInfluence, args.flDuration, args.flRamp );

+	}

+

+	return args.flDuration;

+	

+}

+

+bool CAI_BaseActor::PickTacticalLookTarget( AILookTargetArgs_t *pArgs )

+{

+	CBaseEntity *pEnemy = GetEnemy();

+

+	if (pEnemy != NULL)

+	{

+		if ( ( FVisible( pEnemy ) || random->RandomInt(0, 3) == 0 ) && ValidHeadTarget(pEnemy->EyePosition()))

+		{

+			// look at enemy closer

+			pArgs->hTarget = pEnemy;

+			pArgs->flInfluence = random->RandomFloat( 0.7, 1.0 );

+			pArgs->flRamp = 0;

+			return true;

+		}

+		else

+		{

+			// look at something else for a shorter time

+			pArgs->flDuration = random->RandomFloat( 0.5, 0.8 );

+			// move head faster

+			pArgs->flRamp = 0.2;

+		}

+	}

+	return false;

+}

+

+bool CAI_BaseActor::PickRandomLookTarget( AILookTargetArgs_t *pArgs )

+{

+	bool bIsNavigating = ( GetNavigator()->IsGoalActive() && GetNavigator()->IsGoalSet() );

+	

+	if ( bIsNavigating && random->RandomInt(1, 10) <= 3 )

+	{

+		Vector navLookPoint;

+		Vector delta;

+		if ( GetNavigator()->GetPointAlongPath( &navLookPoint, 12 * 12 ) && (delta = navLookPoint - GetAbsOrigin()).Length() > 8.0 * 12.0 )

+		{

+			if ( random->RandomInt(1, 10) <= 5 )

+			{

+				pArgs->vTarget = navLookPoint;

+				pArgs->flDuration = random->RandomFloat( 0.2, 0.4 );

+			}

+			else

+			{

+				pArgs->hTarget = this;

+				pArgs->flDuration = random->RandomFloat( 1.0, 2.0 );

+			}

+			pArgs->flRamp = 0.2;

+			return true;

+		}

+	}

+

+	if ( GetState() == NPC_STATE_COMBAT && random->RandomInt(1, 10) <= 8 )

+	{

+		// if in combat, look forward 80% of the time?

+		pArgs->hTarget = this;

+		return true;

+	}

+

+	CBaseEntity *pBestEntity = NULL;

+	CBaseEntity *pEntity = NULL;

+	int iHighestImportance = 0;

+	int iConsidered = 0;

+	for ( CEntitySphereQuery sphere( GetAbsOrigin(), 30 * 12, 0 ); (pEntity = sphere.GetCurrentEntity()) != NULL; sphere.NextEntity() )

+	{

+		if (pEntity == this)

+		{

+			continue;

+		}

+

+		if ( pArgs->bExcludePlayers && pEntity->GetFlags() & FL_CLIENT )

+		{

+			// Don't look at any players.

+			continue;

+		}

+

+		if (!pEntity->IsViewable())

+		{

+			// Don't look at things without a model, or aren't tagged as interesting

+			continue;

+		}

+

+		if ( pEntity->GetOwnerEntity() && !pEntity->GetOwnerEntity()->IsViewable() )

+		{

+			// Don't look at things that are associated with non-viewable owners. 

+			// Specifically, this prevents NPC's looking at beams or sprites that

+			// are part of a viewmodel. (sjb)

+			continue;

+		}

+

+		// Don't look at any object that is ultimately parented to the player.

+		// These objects will almost always be at the player's origin (feet), and it

+		// looks bad when an actor looks at the player's feet. (sjb)

+		CBaseEntity *pParent = pEntity->GetParent();

+		bool bObjectParentedToPlayer = false;

+		while( pParent )

+		{

+			if( pParent->IsPlayer() )

+			{

+				bObjectParentedToPlayer = true;

+				break;

+			}

+

+			pParent = pParent->GetParent();

+		}

+

+		if( bObjectParentedToPlayer )

+			continue;

+		

+		// skip entities we're already looking at

+		if ( pArgs->pQueue->Find( pEntity ) != pArgs->pQueue->InvalidIndex() )

+			continue;

+

+		// keep track of number of interesting things

+		iConsidered++;

+

+		if ((pEntity->GetFlags() & FL_CLIENT) && (pEntity->IsMoving() || random->RandomInt( 0, 2) == 0))

+		{

+			if (FVisible( pEntity ) && ValidHeadTarget(pEntity->EyePosition()))

+			{

+				pArgs->flDuration = random->RandomFloat( 1.0, 4.0 );

+				pBestEntity = pEntity;

+				break;

+			}

+		}

+	

+		Vector delta = (pEntity->EyePosition() - EyePosition());

+		VectorNormalize( delta );

+

+		int iImportance;

+#if 0

+		// consider things in front to be more important than things to the sides

+		iImportance = (DotProduct( delta, HeadDirection3D() );

+#else

+		// No, for now, give all targets random priority (as long as they're in front)

+		iImportance = random->RandomInt( 1, 100 );

+		

+#endif

+		// make other npcs, and moving npc's far more important

+		if (pEntity->MyNPCPointer())

+		{

+			iImportance *= 10;

+			if (pEntity->IsMoving())

+			{

+				iImportance *= 10;

+			}

+		}

+

+		if ( iImportance > iHighestImportance )

+		{

+			if (FVisible( pEntity ) && ValidHeadTarget(pEntity->EyePosition()))

+			{

+				iHighestImportance = iImportance;

+				pBestEntity	= pEntity; 

+				// NDebugOverlay::Line( EyePosition(), pEntity->EyePosition(), 0,0,255, false, 0.5);

+			}

+		}

+	}

+

+	// if there were too few things to look at, don't trust the item

+	if (iConsidered < random->RandomInt( 0, 5))

+	{

+		pBestEntity = NULL;

+	}

+

+	if (pBestEntity)

+	{

+		//Msg("looking at %s\n", pBestEntity->GetClassname() );

+		//NDebugOverlay::Line( EyePosition(), pBestEntity->WorldSpaceCenter(), 255, 0, 0, false, 5 );

+		pArgs->hTarget = pBestEntity;

+		return true;

+	}

+	

+	return false;

+}

+

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

+// All attempts to find a target have failed, so just make something up.

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

+void CAI_BaseActor::MakeRandomLookTarget( AILookTargetArgs_t *pArgs, float minTime, float maxTime )

+{

+	Vector forward, right, up;

+	GetVectors( &forward, &right, &up );

+

+	// DevMsg("random view\n");

+

+	// For now, just look farther afield while driving in the vehicle.  Without this we look around wildly!

+#ifdef HL2_EPISODIC

+	if ( MyCombatCharacterPointer() && MyCombatCharacterPointer()->IsInAVehicle() )

+	{

+		pArgs->vTarget = EyePosition() + forward * 2048 + right * random->RandomFloat(-650,650) + up * random->RandomFloat(-32,32);

+	}

+	else

+#endif // HL2_EPISODIC

+	{

+		pArgs->vTarget = EyePosition() + forward * 128 + right * random->RandomFloat(-32,32) + up * random->RandomFloat(-16,16);

+	}

+

+	pArgs->flDuration = random->RandomFloat( minTime, maxTime );

+	pArgs->flInfluence = 0.01;

+	pArgs->flRamp = random->RandomFloat( 0.8, 2.8 );

+}

+

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

+// Purpose: Make sure we're looking at what we're shooting at

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

+

+void CAI_BaseActor::StartTaskRangeAttack1( const Task_t *pTask )

+{

+	BaseClass::StartTaskRangeAttack1( pTask );

+	if (GetEnemy())

+	{

+		AddLookTarget( GetEnemy(), 1.0, 0.5, 0.2 );

+	}

+}

+

+

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

+// Purpose: Set direction that the NPC is looking

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

+void CAI_BaseActor::AddLookTarget( CBaseEntity *pTarget, float flImportance, float flDuration, float flRamp )

+{

+	m_lookQueue.Add( pTarget, flImportance, flDuration, flRamp );

+}

+

+

+void CAI_BaseActor::AddLookTarget( const Vector &vecPosition, float flImportance, float flDuration, float flRamp )

+{

+	m_lookQueue.Add( vecPosition, flImportance, flDuration, flRamp );

+}

+

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

+// Purpose: Maintain eye, head, body postures, etc.

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

+void CAI_BaseActor::MaintainLookTargets( float flInterval )

+{

+	int i;

+

+	if ( m_iszExpressionScene != NULL_STRING && m_hExpressionSceneEnt == NULL )

+	{

+		InstancedScriptedScene( this, STRING(m_iszExpressionScene), &m_hExpressionSceneEnt, 0.0, true );

+	}

+

+	// decay body/spine yaw

+	m_goalSpineYaw = m_goalSpineYaw * 0.8;

+	m_goalBodyYaw = m_goalBodyYaw * 0.8;

+	m_goalHeadCorrection = m_goalHeadCorrection * 0.8;

+

+	// ARRGGHHH, this needs to be moved!!!!

+	SetAccumulatedYawAndUpdate( );

+	ProcessSceneEvents( );

+	MaintainTurnActivity( );

+	DoBodyLean( );

+	UpdateBodyControl( );

+	InvalidateBoneCache();

+

+	// cached versions of the current eye position

+	Vector vEyePosition = EyePosition( );

+

+	// FIXME: make this client side and automatic

+	// set gesture positions

+	Set( m_ParameterGestureHeight, Get( m_FlexweightGestureUpDown ) );

+	Set( m_ParameterGestureWidth, Get( m_FlexweightGestureRightLeft ) );

+

+	// initialize goal head direction to be current direction - this frames animation layering/pose parameters -  

+	// but with the head controlls removed.

+	Vector vHead = HeadDirection3D( );

+	float flHeadInfluence = 0.0;

+

+	// NDebugOverlay::Line( vEyePosition, vEyePosition + vHead * 16, 0,0,255, false, 0.1);

+

+	// clean up look targets

+	m_lookQueue.Cleanup();

+

+	// clean up random look targets

+	m_randomLookQueue.Cleanup();

+

+	// clean up synthetic look targets

+	m_syntheticLookQueue.Cleanup();

+

+	// if there's real things to look at, turn off the random targets

+	if (m_lookQueue.Count() != 0 || m_syntheticLookQueue.Count() != 0)

+	{

+		for (i = 0; i < m_randomLookQueue.Count(); i++)

+		{

+			if (gpGlobals->curtime < m_randomLookQueue[i].m_flEndTime - m_randomLookQueue[i].m_flRamp - 0.2)

+			{

+				m_randomLookQueue[i].m_flEndTime = gpGlobals->curtime + m_randomLookQueue[i].m_flRamp + 0.2;

+			}

+		}

+		m_flNextRandomLookTime = gpGlobals->curtime + 1.0;

+	}

+	else if (gpGlobals->curtime >= m_flNextRandomLookTime && GetState() != NPC_STATE_SCRIPT)

+	{

+		// Look at whatever!

+		m_flNextRandomLookTime = gpGlobals->curtime + PickLookTarget( m_randomLookQueue ) - 0.4;

+	}

+

+	// don't bother with any of the rest if the player can't see you

+	if (!HasCondition( COND_IN_PVS ))

+	{

+		return;

+	}

+

+	// Time to finish the current random expression? Or time to pick a new one?

+	if ( m_flNextRandomExpressionTime && gpGlobals->curtime > m_flNextRandomExpressionTime )

+	{

+		// Random expressions need to be cleared, because they don't loop. So if we

+		// pick the same one again, we want to restart it.

+		ClearExpression();

+

+		PlayExpressionForState( GetState() );

+	}

+

+	CUtlVector<CAI_InterestTarget_t *> active;

+	// clean up random look targets

+	for (i = 0; i < m_randomLookQueue.Count(); i++)

+	{

+		active.AddToTail( &m_randomLookQueue[i] );

+	}

+	for (i = 0; i < m_lookQueue.Count(); i++)

+	{

+		active.AddToTail( &m_lookQueue[i] );

+	}

+	for (i = 0; i < m_syntheticLookQueue.Count(); i++)

+	{

+		active.AddToTail( &m_syntheticLookQueue[i] );

+	}

+		

+	// figure out ideal head yaw

+	bool bValidHeadTarget = false;

+	bool bExpectedHeadTarget = false;

+	for (i = 0; i < active.Count();i++)

+	{

+		Vector dir;

+		float flDist = 100.0f;

+		

+		bExpectedHeadTarget = true;

+		float flInterest = active[i]->Interest( );

+

+		if (active[i]->IsThis( this ))

+		{

+			int iForward = LookupAttachment( "forward" );

+			if ( iForward > 0)

+			{

+				Vector tmp1;

+				GetAttachment( iForward, tmp1, &dir, NULL, NULL );

+			}

+			else

+			{

+				dir = HeadDirection3D();

+			}

+		}

+		else

+		{

+			dir = active[i]->GetPosition() - vEyePosition;

+			flDist = VectorNormalize( dir );

+			flInterest = flInterest * HeadTargetValidity( active[i]->GetPosition() );

+		}

+		

+		/*

+		if ( (m_debugOverlays & OVERLAY_NPC_SELECTED_BIT) )

+		{

+			DevMsg( "head (%d) %.2f : %s : %.1f %.1f %.1f\n", i, flInterest, active[i]->m_hTarget->GetClassname(), active[i]->GetPosition().x, active[i]->GetPosition().y, active[i]->GetPosition().z );

+		}

+		*/

+		

+		if (flInterest > 0.0)

+		{

+			if (flHeadInfluence == 0.0)

+			{

+				vHead = dir;

+				flHeadInfluence = flInterest;

+			}

+			else

+			{

+				flHeadInfluence = flHeadInfluence * (1 - flInterest) + flInterest;

+				float w = flInterest / flHeadInfluence;

+				vHead = vHead * (1 - w) + dir * w;

+			}

+

+			bValidHeadTarget = true;

+

+			// NDebugOverlay::Line( vEyePosition, vEyePosition + dir * 64, 0,255,0, false, 0.1);

+		}

+		else

+		{

+			// NDebugOverlay::Line( vEyePosition, active[i]->GetPosition(), 255,0,0, false, 0.1);

+		}

+	}

+

+	Assert( flHeadInfluence <= 1.0 );

+

+	// turn head toward target

+	if (bValidHeadTarget)

+	{

+		UpdateHeadControl( vEyePosition + vHead * 100, flHeadInfluence );

+		m_goalHeadDirection = vHead;

+		m_goalHeadInfluence = flHeadInfluence;

+	}

+	else

+	{

+		// no target, decay all head control direction

+		m_goalHeadDirection = m_goalHeadDirection * 0.8 + vHead * 0.2;

+

+		m_goalHeadInfluence = MAX( m_goalHeadInfluence - 0.2, 0 );

+

+		VectorNormalize( m_goalHeadDirection );

+		UpdateHeadControl( vEyePosition + m_goalHeadDirection * 100, m_goalHeadInfluence );

+		// NDebugOverlay::Line( vEyePosition, vEyePosition + m_goalHeadDirection * 100, 255,0,0, false, 0.1);

+	}

+

+	// DevMsg( "%.1f %.1f ", GetPoseParameter( "head_pitch" ), GetPoseParameter( "head_roll" ) );

+

+	// figure out eye target

+	// eyes need to look directly at a target, even if the head doesn't quite aim there yet.

+	bool bFoundTarget = false;

+	EHANDLE	hTarget = NULL;

+

+	for (i = active.Count() - 1; i >= 0; i--)

+	{

+		if (active[i]->IsThis( this ))

+		{

+			// DevMsg( "eyes (%d) %s\n", i, STRING( active[i]->m_hTarget->GetEntityName().ToCStr() ) );

+			bFoundTarget = true;

+			hTarget = this;

+			SetViewtarget( vEyePosition + HeadDirection3D() * 100 );

+			// NDebugOverlay::Line( vEyePosition, vEyePosition + HeadDirection3D() * 100, 255,0,0, false, 0.1);

+			break;

+		}

+		else

+		{

+			// E3 Hack

+			if (ValidEyeTarget(active[i]->GetPosition()))

+			{

+				// DevMsg( "eyes (%d) %s\n", i, STRING( pTarget->GetEntityName().ToCStr() ) );

+

+				bFoundTarget = true;

+				hTarget = active[i]->m_hTarget;

+				SetViewtarget( active[i]->GetPosition() );

+				break;

+			}

+		}

+	}

+

+	// FIXME: add blink when changing targets

+	if (m_hLookTarget != hTarget)

+	{

+		m_flBlinktime -= 0.5;

+		m_hLookTarget = hTarget;

+

+		if ( (m_debugOverlays & OVERLAY_NPC_SELECTED_BIT) && ai_debug_looktargets.GetInt() == 2 && m_hLookTarget.Get() )

+		{

+			if ( m_hLookTarget != this )

+			{

+				Vector vecEyePos = m_hLookTarget->EyePosition();

+				NDebugOverlay::Box( vecEyePos, -Vector(5,5,5), Vector(5,5,5), 0, 255, 0, 255, 20 );

+				NDebugOverlay::Line( EyePosition(), vecEyePos, 0,255,0, true, 20 );

+				NDebugOverlay::Text( vecEyePos, UTIL_VarArgs( "%s (%s)", m_hLookTarget->GetClassname(), m_hLookTarget->GetDebugName() ), false, 20 );

+			}

+		}

+

+		OnNewLookTarget();

+	}

+

+	// this should take into acount where it will try to be....

+	if (!bFoundTarget && !ValidEyeTarget( GetViewtarget() ))

+	{

+		Vector right, up;

+		VectorVectors( HeadDirection3D(), right, up );

+		// DevMsg("random view\n");

+		SetViewtarget( EyePosition() + HeadDirection3D() * 128 + right * random->RandomFloat(-32,32) + up * random->RandomFloat(-16,16) );

+	}

+

+	if ( m_hLookTarget != NULL )

+	{

+		Vector absVel = m_hLookTarget->GetAbsVelocity();

+		CBaseEntity *ground = m_hLookTarget->GetGroundEntity();

+		if ( ground && ground->GetMoveType() == MOVETYPE_PUSH)

+		{

+			absVel = absVel + ground->GetAbsVelocity();

+		}

+

+#ifdef HL2_EPISODIC

+		// Translate our position if riding in a vehicle

+		if ( m_hLookTarget->MyCombatCharacterPointer() )

+		{

+			CBaseCombatCharacter *pBCC = m_hLookTarget->MyCombatCharacterPointer();

+			CBaseEntity *pVehicle = pBCC->GetVehicleEntity();

+			if ( pVehicle )

+			{

+				IPhysicsObject *pObj = pVehicle->VPhysicsGetObject();

+				if ( pObj )

+				{

+					Vector vecVelocity;

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

+

+					absVel += vecVelocity;

+				}

+			}

+		}

+#endif //HL2_EPISODIC

+

+		if ( !VectorCompare( absVel, vec3_origin ) )

+		{

+			Vector viewTarget = GetViewtarget();

+

+			// Forward one think cycle

+			viewTarget += absVel * flInterval;

+

+			SetViewtarget( viewTarget );

+		}

+	}

+

+	// NDebugOverlay::Triangle( vEyePosition, GetViewtarget(), GetAbsOrigin(), 255, 255, 255, 10, false, 0.1 );

+

+	// DevMsg("pitch %.1f yaw %.1f\n", GetFlexWeight( "eyes_updown" ), GetFlexWeight( "eyes_rightleft" ) );

+

+	// blink

+	if (m_flBlinktime < gpGlobals->curtime)

+	{

+		Blink();

+		m_flBlinktime = gpGlobals->curtime + random->RandomFloat( 1.5, 4.5 );

+	}

+

+	if ( ai_debug_looktargets.GetInt() == 1 && (m_debugOverlays & OVERLAY_NPC_SELECTED_BIT) )

+	{

+		NDebugOverlay::Box( GetViewtarget(), -Vector(2,2,2), Vector(2,2,2), 0, 255, 0, 0, 20 );

+		NDebugOverlay::Line( EyePosition(),GetViewtarget(), 0,255,0, false, .1 );

+	}

+}

+

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

+

+void CAI_BaseActor::PlayExpressionForState( NPC_STATE state )

+{

+	// If we have an override expression, use it above everything else

+	if ( m_iszExpressionOverride != NULL_STRING && state != NPC_STATE_DEAD )

+	{

+		SetExpression( STRING(m_iszExpressionOverride) );

+		return;

+	}

+

+	// If we have a random expression, use that

+	const char *pszExpression = SelectRandomExpressionForState( state );

+	if ( pszExpression && *pszExpression )

+	{

+		float flDuration = SetExpression( pszExpression );

+		m_flNextRandomExpressionTime = gpGlobals->curtime + flDuration;

+		return;

+	}

+	else

+	{

+		// Stop looking for random expressions for this state

+		m_flNextRandomExpressionTime = 0;

+	}

+

+	// Lastly, use the base expression loops

+	switch ( state )

+	{

+	case NPC_STATE_IDLE:

+		if ( m_iszIdleExpression != NULL_STRING )

+		{

+			SetExpression( STRING(m_iszIdleExpression) );

+		}

+		break;

+

+	case NPC_STATE_COMBAT:

+		if ( m_iszCombatExpression != NULL_STRING )

+		{

+			SetExpression( STRING(m_iszCombatExpression) );

+		}

+		break;

+

+	case NPC_STATE_ALERT:

+		if ( m_iszAlertExpression != NULL_STRING )

+		{

+			SetExpression( STRING(m_iszAlertExpression) );

+		}

+		break;

+

+	case NPC_STATE_PLAYDEAD:

+	case NPC_STATE_DEAD:

+		if ( m_iszDeathExpression != NULL_STRING )

+		{

+			SetExpression( STRING(m_iszDeathExpression) );

+		}

+		break;

+	}

+}

+

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

+// Purpose: Return a random expression for the specified state to play over 

+//			the state's expression loop.

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

+const char *CAI_BaseActor::SelectRandomExpressionForState( NPC_STATE state )

+{

+	return NULL;

+}

+

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

+

+void CAI_BaseActor::OnStateChange( NPC_STATE OldState, NPC_STATE NewState )

+{

+	PlayExpressionForState( NewState );

+

+#ifdef HL2_EPISODIC

+	// If we've just switched states, ensure we stop any scenes that asked to be stopped

+	if ( OldState == NPC_STATE_IDLE )

+	{

+		RemoveActorFromScriptedScenes( this, true, true );

+	}

+#endif

+

+	BaseClass::OnStateChange( OldState, NewState );

+}

+

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

+

+float CAI_BaseActor::SetExpression( const char *pszExpressionScene )

+{

+	if ( !pszExpressionScene || !*pszExpressionScene )

+	{

+		ClearExpression();

+		return 0;

+	}

+

+	if ( m_iszExpressionScene != NULL_STRING && stricmp( STRING(m_iszExpressionScene), pszExpressionScene ) == 0 )

+	{

+		return 0;

+	}

+

+	if ( m_hExpressionSceneEnt != NULL )

+	{

+		StopScriptedScene( this, m_hExpressionSceneEnt );

+	}

+

+	if ( ai_debug_expressions.GetInt() )

+	{

+		Msg("%s (%s) set expression to: %s\n", GetClassname(), GetDebugName(), pszExpressionScene );

+	}

+

+	m_iszExpressionScene = NULL_STRING;

+	if ( pszExpressionScene )

+	{

+		float flDuration = InstancedScriptedScene( this, pszExpressionScene, &m_hExpressionSceneEnt, 0.0, true );

+

+		if ( m_hExpressionSceneEnt != NULL )

+		{

+			m_iszExpressionScene = AllocPooledString( pszExpressionScene );

+		}

+

+		return flDuration;

+	}

+

+	return 0;

+}

+

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

+

+void CAI_BaseActor::ClearExpression()

+{

+	if ( m_hExpressionSceneEnt != NULL )

+	{

+		StopScriptedScene( this, m_hExpressionSceneEnt );

+	}

+	m_iszExpressionScene = NULL_STRING;

+}

+

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

+

+const char *CAI_BaseActor::GetExpression()

+{

+	return STRING(m_iszExpressionScene);

+}

+

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

+

+void CAI_BaseActor::InputSetExpressionOverride( inputdata_t &inputdata )

+{

+	bool fHadOverride = ( m_iszExpressionOverride != NULL_STRING );

+	m_iszExpressionOverride = inputdata.value.StringID();

+	if (  m_iszExpressionOverride != NULL_STRING )

+	{

+		SetExpression( STRING(m_iszExpressionOverride) );

+	}

+	else if ( fHadOverride )

+	{

+		PlayExpressionForState( GetState() );

+	}

+}

+

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

+

+bool CAI_BaseActor::UseSemaphore( void )

+{

+	if ( m_bDontUseSemaphore )

+		return false;

+

+	return true;

+}

+

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

+

+CAI_Expresser *CAI_BaseActor::CreateExpresser()

+{

+	m_pExpresser = new CAI_Expresser(this);

+	return m_pExpresser;

+}

+

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

+

+CAI_Expresser *CAI_BaseActor::GetExpresser() 

+{ 

+	return m_pExpresser; 

+}

+	

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

+

+bool CAI_BaseActor::CreateComponents()

+{

+	if ( !BaseClass::CreateComponents() )

+		return false;

+

+	m_pExpresser = CreateExpresser();

+	if ( !m_pExpresser)

+		return false;

+

+	m_pExpresser->Connect(this);

+

+	return true;

+}

+

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