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diff --git a/game/server/NextBot/Player/NextBotPlayerLocomotion.h b/game/server/NextBot/Player/NextBotPlayerLocomotion.h
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+++ b/game/server/NextBot/Player/NextBotPlayerLocomotion.h
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+// NextBotPlayerLocomotion.h
+// Locomotor for CBasePlayer derived bots
+// Author: Michael Booth, November 2005
+//========= Copyright Valve Corporation, All rights reserved. ============//
+
+#ifndef _NEXT_BOT_PLAYER_LOCOMOTION_H_
+#define _NEXT_BOT_PLAYER_LOCOMOTION_H_
+
+#include "NextBot.h"
+#include "NextBotLocomotionInterface.h"
+#include "Path/NextBotPathFollow.h"
+
+class CBasePlayer;
+
+//--------------------------------------------------------------------------------------------------
+/**
+ * Basic player locomotion implementation
+ */
+class PlayerLocomotion : public ILocomotion
+{
+public:
+	DECLARE_CLASS( PlayerLocomotion, ILocomotion );
+
+	PlayerLocomotion( INextBot *bot );
+	virtual ~PlayerLocomotion() { }
+
+	virtual void Reset( void );							// reset to initial state
+	virtual void Update( void );						// update internal state
+
+	virtual void Approach( const Vector &pos, float goalWeight = 1.0f );	// move directly towards the given position
+	virtual void DriveTo( const Vector &pos );			// Move the bot to the precise given position immediately, 
+
+	//
+	// ILocomotion modifiers
+	//
+	virtual bool ClimbUpToLedge( const Vector &landingGoal, const Vector &landingForward, const CBaseEntity *obstacle );	// initiate a jump to an adjacent high ledge, return false if climb can't start
+	virtual void JumpAcrossGap( const Vector &landingGoal, const Vector &landingForward );	// initiate a jump across an empty volume of space to far side
+	virtual void Jump( void );								// initiate a simple undirected jump in the air
+	virtual bool IsClimbingOrJumping( void ) const;					// is jumping in any form
+	virtual bool IsClimbingUpToLedge( void ) const;			// is climbing up to a high ledge
+	virtual bool IsJumpingAcrossGap( void ) const;			// is jumping across a gap to the far side
+
+	virtual void Run( void );								// set desired movement speed to running
+	virtual void Walk( void );								// set desired movement speed to walking
+	virtual void Stop( void );								// set desired movement speed to stopped
+	virtual bool IsRunning( void ) const;
+	virtual void SetDesiredSpeed( float speed );			// set desired speed for locomotor movement
+	virtual float GetDesiredSpeed( void ) const;			// returns the current desired speed
+	virtual void SetMinimumSpeedLimit( float limit );		// speed cannot drop below this 
+	virtual void SetMaximumSpeedLimit( float limit );		// speed cannot rise above this 
+
+	virtual bool IsOnGround( void ) const;					// return true if standing on something
+	virtual CBaseEntity *GetGround( void ) const;			// return the current ground entity or NULL if not on the ground
+	virtual const Vector &GetGroundNormal( void ) const;	// surface normal of the ground we are in contact with
+
+	virtual void ClimbLadder( const CNavLadder *ladder, const CNavArea *dismountGoal );		// climb the given ladder to the top and dismount
+	virtual void DescendLadder( const CNavLadder *ladder, const CNavArea *dismountGoal );		// descend the given ladder to the bottom and dismount
+	virtual bool IsUsingLadder( void ) const;
+	virtual bool IsAscendingOrDescendingLadder( void ) const;	// we are actually on the ladder right now, either climbing up or down
+	virtual bool IsAbleToAutoCenterOnLadder( void ) const;
+
+	virtual void FaceTowards( const Vector &target );		// rotate body to face towards "target"
+
+	virtual void SetDesiredLean( const QAngle &lean )	{ }
+	virtual const QAngle &GetDesiredLean( void ) const	{ static QAngle junk; return junk; }
+
+	//
+	// ILocomotion information
+	//
+	virtual const Vector &GetFeet( void ) const;			// return position of "feet" - point below centroid of bot at feet level
+
+	virtual float GetStepHeight( void ) const;				// if delta Z is greater than this, we have to jump to get up
+	virtual float GetMaxJumpHeight( void ) const;			// return maximum height of a jump
+	virtual float GetDeathDropHeight( void ) const;			// distance at which we will die if we fall
+
+	virtual float GetRunSpeed( void ) const;				// get maximum running speed
+	virtual float GetWalkSpeed( void ) const;				// get maximum walking speed
+
+	virtual float GetMaxAcceleration( void ) const;			// return maximum acceleration of locomotor
+	virtual float GetMaxDeceleration( void ) const;			// return maximum deceleration of locomotor
+
+	virtual const Vector &GetVelocity( void ) const;		// return current world space velocity
+
+protected:
+	virtual void AdjustPosture( const Vector &moveGoal );
+
+private:
+	CBasePlayer *m_player;									// the player we are locomoting	
+
+	mutable bool m_isJumping;
+	CountdownTimer m_jumpTimer;
+
+	bool m_isClimbingUpToLedge;
+	bool m_isJumpingAcrossGap;
+	Vector m_landingGoal;
+	bool m_hasLeftTheGround;
+
+	float m_desiredSpeed;
+	float m_minSpeedLimit;
+	float m_maxSpeedLimit;
+
+	bool TraverseLadder( void );			// when climbing/descending a ladder
+
+	enum LadderState
+	{
+		NO_LADDER,							// not using a ladder
+		APPROACHING_ASCENDING_LADDER,
+		APPROACHING_DESCENDING_LADDER,
+		ASCENDING_LADDER,
+		DESCENDING_LADDER,
+		DISMOUNTING_LADDER_TOP,
+		DISMOUNTING_LADDER_BOTTOM,
+	};
+
+	LadderState m_ladderState;
+	LadderState ApproachAscendingLadder( void );
+	LadderState ApproachDescendingLadder( void );
+	LadderState AscendLadder( void );
+	LadderState DescendLadder( void );
+	LadderState DismountLadderTop( void );
+	LadderState DismountLadderBottom( void );
+	
+	const CNavLadder *m_ladderInfo;
+	const CNavArea *m_ladderDismountGoal;
+	CountdownTimer m_ladderTimer;			// a "give up" timer if things go awry
+
+	bool IsClimbPossible( INextBot *me, const CBaseEntity *obstacle ) const;
+};
+
+
+inline float PlayerLocomotion::GetStepHeight( void ) const
+{
+	return 18.0f;
+}
+
+
+inline float PlayerLocomotion::GetMaxJumpHeight( void ) const
+{
+	return 57.0f;
+}
+
+
+inline float PlayerLocomotion::GetDeathDropHeight( void ) const
+{
+	return 200.0f;
+}
+
+
+inline float PlayerLocomotion::GetMaxAcceleration( void ) const
+{
+	return 100.0f;
+}
+
+inline float PlayerLocomotion::GetMaxDeceleration( void ) const
+{
+	return 200.0f;
+}
+
+inline void PlayerLocomotion::Run( void )
+{
+	m_desiredSpeed = GetRunSpeed();
+}
+
+inline void PlayerLocomotion::Walk( void )
+{
+	m_desiredSpeed = GetWalkSpeed();
+}
+
+inline void PlayerLocomotion::Stop( void )
+{
+	m_desiredSpeed = 0.0f;
+}
+
+inline bool PlayerLocomotion::IsRunning( void ) const
+{
+	return true;
+}
+
+inline void PlayerLocomotion::SetDesiredSpeed( float speed )
+{
+	m_desiredSpeed = speed;
+}
+
+inline float PlayerLocomotion::GetDesiredSpeed( void ) const
+{
+	return clamp( m_desiredSpeed, m_minSpeedLimit, m_maxSpeedLimit );
+}
+
+inline void PlayerLocomotion::SetMinimumSpeedLimit( float limit )
+{
+	m_minSpeedLimit = limit;
+}
+
+inline void PlayerLocomotion::SetMaximumSpeedLimit( float limit )
+{
+	m_maxSpeedLimit = limit;
+}
+
+inline bool PlayerLocomotion::IsAbleToAutoCenterOnLadder( void ) const
+{
+	return IsUsingLadder() && (m_ladderState == ASCENDING_LADDER || m_ladderState == DESCENDING_LADDER);
+}
+
+inline bool PlayerLocomotion::IsAscendingOrDescendingLadder( void ) const
+{
+	switch( m_ladderState )
+	{
+	case ASCENDING_LADDER:
+	case DESCENDING_LADDER:
+	case DISMOUNTING_LADDER_TOP:
+	case DISMOUNTING_LADDER_BOTTOM:
+		return true;
+	default:
+		// Explicitly handle the default so that clang knows not to warn us.
+		// warning: enumeration values 'NO_LADDER', 'APPROACHING_ASCENDING_LADDER', and 'APPROACHING_DESCENDING_LADDER' not handled in switch [-Wswitch-enum]
+		break;
+	}
+
+	return false;
+}
+
+
+#endif // _NEXT_BOT_PLAYER_LOCOMOTION_H_