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game/server/physics_bone_follower.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#ifndef PHYSICS_BONE_FOLLOWER_H
+#define PHYSICS_BONE_FOLLOWER_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+class CBoneFollower;
+
+//
+// To use bone followers in an entity, contain a CBoneFollowerManager in it. Then:
+//		- Call InitBoneFollowers() in the entity's CreateVPhysics().
+//		- Call UpdateBoneFollowers() after you move your bones.
+//		- Call DestroyBoneFollowers() when your entity's removed
+
+struct physfollower_t
+{
+	DECLARE_SIMPLE_DATADESC();
+	int boneIndex;
+	CHandle<CBoneFollower> hFollower;
+};
+
+struct vcollide_t;
+
+// create a manager and a list of followers directly from a ragdoll
+void CreateBoneFollowersFromRagdoll( CBaseAnimating *pEntity, class CBoneFollowerManager *pManager, vcollide_t *pCollide );
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+class CBoneFollowerManager
+{
+	DECLARE_SIMPLE_DATADESC();
+public:
+	CBoneFollowerManager();
+	~CBoneFollowerManager();
+
+	// Use either of these to create the bone followers in your entity's CreateVPhysics()
+	void InitBoneFollowers( CBaseAnimating *pParentEntity, int iNumBones, const char **pFollowerBoneNames );
+	void AddBoneFollower( CBaseAnimating *pParentEntity, const char *pFollowerBoneName, solid_t *pSolid = NULL );	// Adds a single bone follower
+
+	// Call this after you move your bones
+	void UpdateBoneFollowers( CBaseAnimating *pParentEntity );
+
+	// Call this when your entity's removed
+	void DestroyBoneFollowers( void );
+
+	physfollower_t *GetBoneFollower( int iFollowerIndex );
+	int				GetBoneFollowerIndex( CBoneFollower *pFollower );
+	int				GetNumBoneFollowers( void ) const { return m_iNumBones; }
+
+private:
+	bool CreatePhysicsFollower( CBaseAnimating *pParentEntity, physfollower_t &follow, const char *pBoneName, solid_t *pSolid );
+
+private:
+	int							m_iNumBones;
+	CUtlVector<physfollower_t>	m_physBones;
+};
+
+
+class CBoneFollower : public CBaseEntity
+{
+	DECLARE_CLASS( CBoneFollower, CBaseEntity );
+	DECLARE_DATADESC();
+	DECLARE_SERVERCLASS();
+public:
+	// CBaseEntity
+	void VPhysicsUpdate( IPhysicsObject *pPhysics );
+	int  UpdateTransmitState(void);
+
+	// NOTE: These are forwarded to the parent object!
+	void VPhysicsCollision( int index, gamevcollisionevent_t *pEvent );
+	void VPhysicsFriction( IPhysicsObject *pObject, float energy, int surfaceProps, int surfacePropsHit );
+	void VPhysicsShadowCollision( int index, gamevcollisionevent_t *pEvent );
+
+	bool TestCollision( const Ray_t &ray, unsigned int mask, trace_t& trace );
+	int	 ObjectCaps( void );
+	void Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value );
+	
+	void Touch( CBaseEntity *pOther );
+
+	void TraceAttack( const CTakeDamageInfo &info, const Vector &vecDir, trace_t *ptr, CDmgAccumulator *pAccumulator );
+
+	// locals
+	bool Init( CBaseEntity *pOwner, const char *pModelName, solid_t &solid, const Vector &position, const QAngle &orientation );
+	void UpdateFollower( const Vector &position, const QAngle &orientation, float flInterval );
+	void SetTraceData( int physicsBone, int hitGroup );
+
+	// factory
+	static CBoneFollower *Create( CBaseEntity *pOwner, const char *pModelName, solid_t &solid, const Vector &position, const QAngle &orientation );
+
+private:
+	CNetworkVar( int, m_modelIndex );
+	CNetworkVar( int, m_solidIndex );
+	int		m_physicsBone;
+	int		m_hitGroup;
+};
+
+#endif // PHYSICS_BONE_FOLLOWER_H