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diff --git a/game/server/NextBot/NextBotBodyInterface.h b/game/server/NextBot/NextBotBodyInterface.h
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+++ b/game/server/NextBot/NextBotBodyInterface.h
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+// NextBotBodyInterface.h
+// Control and information about the bot's body state (posture, animation state, etc)
+// Author: Michael Booth, April 2006
+//========= Copyright Valve Corporation, All rights reserved. ============//
+
+#ifndef _NEXT_BOT_BODY_INTERFACE_H_
+#define _NEXT_BOT_BODY_INTERFACE_H_
+
+#include "animation.h"
+#include "NextBotComponentInterface.h"
+
+class INextBot;
+struct animevent_t;
+
+
+//----------------------------------------------------------------------------------------------------------------
+/**
+ * The interface for control and information about the bot's body state (posture, animation state, etc)
+ */
+class IBody : public INextBotComponent
+{
+public:
+	IBody( INextBot *bot ) : INextBotComponent( bot ) { }
+	virtual ~IBody() { }
+
+	virtual void Reset( void ) { INextBotComponent::Reset(); }			// reset to initial state
+	virtual void Update( void ) { }										// update internal state
+
+	/**
+	 * Move the bot to a new position.
+	 * If the body is not currently movable or if it
+	 * is in a motion-controlled animation activity 
+	 * the position will not be changed and false will be returned.
+	 */
+	virtual bool SetPosition( const Vector &pos );
+
+	virtual const Vector &GetEyePosition( void ) const;					// return the eye position of the bot in world coordinates
+	virtual const Vector &GetViewVector( void ) const;					// return the view unit direction vector in world coordinates
+
+	enum LookAtPriorityType
+	{
+		BORING,
+		INTERESTING,				// last known enemy location, dangerous sound location
+		IMPORTANT,					// a danger
+		CRITICAL,					// an active threat to our safety
+		MANDATORY					// nothing can interrupt this look at - two simultaneous look ats with this priority is an error
+	};
+	virtual void AimHeadTowards( const Vector &lookAtPos, 
+								 LookAtPriorityType priority = BORING, 
+								 float duration = 0.0f,
+								 INextBotReply *replyWhenAimed = NULL,
+								 const char *reason = NULL );		// aim the bot's head towards the given goal
+	virtual void AimHeadTowards( CBaseEntity *subject,
+								 LookAtPriorityType priority = BORING, 
+								 float duration = 0.0f,
+								 INextBotReply *replyWhenAimed = NULL,
+								 const char *reason = NULL );		// continually aim the bot's head towards the given subject
+
+	virtual bool IsHeadAimingOnTarget( void ) const;				// return true if the bot's head has achieved its most recent lookat target
+	virtual bool IsHeadSteady( void ) const;						// return true if head is not rapidly turning to look somewhere else
+	virtual float GetHeadSteadyDuration( void ) const;				// return the duration that the bot's head has not been rotating
+	virtual float GetHeadAimSubjectLeadTime( void ) const;			// return how far into the future we should predict our moving subject's position to aim at when tracking subject look-ats
+	virtual float GetHeadAimTrackingInterval( void ) const;			// return how often we should sample our target's position and velocity to update our aim tracking, to allow realistic slop in tracking
+	virtual void ClearPendingAimReply( void ) { }					// clear out currently pending replyWhenAimed callback
+
+	virtual float GetMaxHeadAngularVelocity( void ) const;			// return max turn rate of head in degrees/second
+
+	enum ActivityType 
+	{ 
+		MOTION_CONTROLLED_XY	= 0x0001,	// XY position and orientation of the bot is driven by the animation.
+		MOTION_CONTROLLED_Z		= 0x0002,	// Z position of the bot is driven by the animation.
+		ACTIVITY_UNINTERRUPTIBLE= 0x0004,	// activity can't be changed until animation finishes
+		ACTIVITY_TRANSITORY		= 0x0008,	// a short animation that takes over from the underlying animation momentarily, resuming it upon completion
+		ENTINDEX_PLAYBACK_RATE	= 0x0010,	// played back at different rates based on entindex
+	};
+
+	/**
+	 * Begin an animation activity, return false if we cant do that right now.
+	 */
+	virtual bool StartActivity( Activity act, unsigned int flags = 0 );
+	virtual int SelectAnimationSequence( Activity act ) const;			// given an Activity, select and return a specific animation sequence within it
+
+	virtual Activity GetActivity( void ) const;							// return currently animating activity
+	virtual bool IsActivity( Activity act ) const;						// return true if currently animating activity matches the given one
+	virtual bool HasActivityType( unsigned int flags ) const;			// return true if currently animating activity has any of the given flags
+
+	enum PostureType
+	{
+		STAND,
+		CROUCH,
+		SIT,
+		CRAWL,
+		LIE
+	};
+	virtual void SetDesiredPosture( PostureType posture ) { }			// request a posture change
+	virtual PostureType GetDesiredPosture( void ) const;				// get posture body is trying to assume
+	virtual bool IsDesiredPosture( PostureType posture ) const;			// return true if body is trying to assume this posture
+	virtual bool IsInDesiredPosture( void ) const;						// return true if body's actual posture matches its desired posture
+
+	virtual PostureType GetActualPosture( void ) const;					// return body's current actual posture
+	virtual bool IsActualPosture( PostureType posture ) const;			// return true if body is actually in the given posture
+
+	virtual bool IsPostureMobile( void ) const;							// return true if body's current posture allows it to move around the world
+	virtual bool IsPostureChanging( void ) const;						// return true if body's posture is in the process of changing to new posture
+	
+	
+	/**
+	 * "Arousal" is the level of excitedness/arousal/anxiety of the body.
+	 * Is changes instantaneously to avoid complex interactions with posture transitions.
+	 */
+	enum ArousalType
+	{
+		NEUTRAL,
+		ALERT,
+		INTENSE
+	};
+	virtual void SetArousal( ArousalType arousal ) { }					// arousal level change
+	virtual ArousalType GetArousal( void ) const;						// get arousal level
+	virtual bool IsArousal( ArousalType arousal ) const;				// return true if body is at this arousal level
+
+
+	virtual float GetHullWidth( void ) const;							// width of bot's collision hull in XY plane
+	virtual float GetHullHeight( void ) const;							// height of bot's current collision hull based on posture
+	virtual float GetStandHullHeight( void ) const;						// height of bot's collision hull when standing
+	virtual float GetCrouchHullHeight( void ) const;					// height of bot's collision hull when crouched
+	virtual const Vector &GetHullMins( void ) const;					// return current collision hull minimums based on actual body posture
+	virtual const Vector &GetHullMaxs( void ) const;					// return current collision hull maximums based on actual body posture
+
+	virtual unsigned int GetSolidMask( void ) const;					// return the bot's collision mask (hack until we get a general hull trace abstraction here or in the locomotion interface)
+	virtual unsigned int GetCollisionGroup( void ) const;
+};
+
+
+inline bool IBody::IsHeadSteady( void ) const
+{
+	return true;
+}
+
+inline float IBody::GetHeadSteadyDuration( void ) const
+{
+	return 0.0f;
+}
+
+inline float IBody::GetHeadAimSubjectLeadTime( void ) const
+{
+	return 0.0f;
+}
+
+inline float IBody::GetHeadAimTrackingInterval( void ) const
+{
+	return 0.0f;
+}
+
+inline float IBody::GetMaxHeadAngularVelocity( void ) const
+{
+	return 1000.0f;
+}
+
+inline bool IBody::StartActivity( Activity act, unsigned int flags )
+{
+	return false;
+}
+
+inline int IBody::SelectAnimationSequence( Activity act ) const
+{
+	return 0;
+}
+
+inline Activity IBody::GetActivity( void ) const
+{
+	return ACT_INVALID;
+}
+
+inline bool IBody::IsActivity( Activity act ) const
+{
+	return false;
+}
+
+inline bool IBody::HasActivityType( unsigned int flags ) const
+{
+	return false;
+}
+
+inline IBody::PostureType IBody::GetDesiredPosture( void ) const
+{
+	return IBody::STAND;
+}
+
+inline bool IBody::IsDesiredPosture( PostureType posture ) const
+{
+	return true;
+}
+
+inline bool IBody::IsInDesiredPosture( void ) const
+{
+	return true;
+}
+
+inline IBody::PostureType IBody::GetActualPosture( void ) const
+{
+	return IBody::STAND;
+}
+
+inline bool IBody::IsActualPosture( PostureType posture ) const
+{
+	return true;
+}
+
+inline bool IBody::IsPostureMobile( void ) const
+{
+	return true;
+}
+
+inline bool IBody::IsPostureChanging( void ) const
+{
+	return false;
+}
+
+inline IBody::ArousalType IBody::GetArousal( void ) const
+{
+	return IBody::NEUTRAL;
+}
+
+inline bool IBody::IsArousal( ArousalType arousal ) const
+{
+	return true;
+}
+
+//---------------------------------------------------------------------------------------------------------------------------
+/**
+ * Width of bot's collision hull in XY plane
+ */
+inline float IBody::GetHullWidth( void ) const
+{
+	return 26.0f;
+}
+
+
+//---------------------------------------------------------------------------------------------------------------------------
+/**
+ * Height of bot's current collision hull based on posture
+ */
+inline float IBody::GetHullHeight( void ) const
+{
+	switch( GetActualPosture() )
+	{
+	case LIE:
+		return 16.0f;
+
+	case SIT:
+	case CROUCH:
+		return GetCrouchHullHeight();
+
+	case STAND:
+	default:
+		return GetStandHullHeight();
+	}
+}
+
+
+//---------------------------------------------------------------------------------------------------------------------------
+/**
+ * Height of bot's collision hull when standing
+ */
+inline float IBody::GetStandHullHeight( void ) const
+{
+	return 68.0f;
+}
+
+
+//---------------------------------------------------------------------------------------------------------------------------
+/**
+ * Height of bot's collision hull when crouched
+ */
+inline float IBody::GetCrouchHullHeight( void ) const
+{
+	return 32.0f;
+}
+
+
+//---------------------------------------------------------------------------------------------------------------------------
+/**
+ * Return current collision hull minimums based on actual body posture
+ */
+inline const Vector &IBody::GetHullMins( void ) const
+{
+	static Vector hullMins;
+
+	hullMins.x = -GetHullWidth()/2.0f;
+	hullMins.y = hullMins.x;
+	hullMins.z = 0.0f;
+
+	return hullMins;
+}
+
+
+//---------------------------------------------------------------------------------------------------------------------------
+/**
+ * Return current collision hull maximums based on actual body posture
+ */
+inline const Vector &IBody::GetHullMaxs( void ) const
+{
+	static Vector hullMaxs;
+
+	hullMaxs.x = GetHullWidth()/2.0f;
+	hullMaxs.y = hullMaxs.x;
+	hullMaxs.z = GetHullHeight();
+
+	return hullMaxs;
+}
+
+
+inline unsigned int IBody::GetSolidMask( void ) const
+{
+	return MASK_NPCSOLID;
+}
+
+inline unsigned int IBody::GetCollisionGroup( void ) const
+{
+	return COLLISION_GROUP_NONE;
+}
+
+
+
+#endif // _NEXT_BOT_BODY_INTERFACE_H_