//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:		A link that can be turned on and off.  Unlike normal
// links
//				dyanimc links must be entities so they and receive
//messages. 				They update the state of the actual links.  Allows us to save 				a lot
//of memory by not making all links into entities
//
// $Workfile:     $
// $Date:         $
//
//-----------------------------------------------------------------------------
// $Log: $
//
// $NoKeywords: $
//=============================================================================//

#ifndef AI_DYNAMICLINK_H
#define AI_DYNAMICLINK_H
#pragma once

enum DynamicLinkState_t {
    LINK_OFF = 0,
    LINK_ON = 1,
};

class CAI_Link;

//=============================================================================
//	>> CAI_DynanicLink
//=============================================================================
class CAI_DynamicLink : public CServerOnlyEntity {
    DECLARE_CLASS(CAI_DynamicLink, CServerOnlyEntity);

   public:
    static void InitDynamicLinks(void);
    static void ResetDynamicLinks(void);
    static void PurgeDynamicLinks(void);
    static void GenerateControllerLinks();

    static bool gm_bInitialized;

    static CAI_DynamicLink *GetDynamicLink(int nSrcID, int nDstID);

    static CAI_DynamicLink
        *m_pAllDynamicLinks;              // A linked list of all dynamic link
    CAI_DynamicLink *m_pNextDynamicLink;  // The next dynamic link in the list
                                          // of dynamic links

    int m_nSrcEditID;   // the node that 'owns' this link
    int m_nDestEditID;  // the node on the other end of the link.

    int m_nSrcID;                     // the node that 'owns' this link
    int m_nDestID;                    // the node on the other end of the link.
    DynamicLinkState_t m_nLinkState;  //
    string_t
        m_strAllowUse;    // Only this entity name or classname may use the link
    bool m_bInvertAllow;  // Instead of only allowing the m_strAllowUse entity,
                          // exclude only it

    bool m_bFixedUpIds;
    bool m_bNotSaved;
    int m_nLinkType;

    void SetLinkState(void);
    bool IsLinkValid(void);

    CAI_Link *FindLink();

    int ObjectCaps();

    // ----------------
    //	Inputs
    // ----------------
    void InputTurnOn(inputdata_t &inputdata);
    void InputTurnOff(inputdata_t &inputdata);
    DECLARE_DATADESC();

    CAI_DynamicLink();
    ~CAI_DynamicLink();
};

//=============================================================================
//	>> CAI_DynanicLinkVolume
//=============================================================================
class CAI_DynamicLinkController : public CServerOnlyEntity {
    DECLARE_CLASS(CAI_DynamicLinkController, CServerOnlyEntity);

   public:
    void GenerateLinksFromVolume();

    // ----------------
    //	Inputs
    // ----------------
    void InputTurnOn(inputdata_t &inputdata);
    void InputTurnOff(inputdata_t &inputdata);
    void InputSetAllowed(inputdata_t &inputdata);
    void InputSetInvert(inputdata_t &inputdata);

    CUtlVector<CHandle<CAI_DynamicLink> > m_ControlledLinks;
    DynamicLinkState_t m_nLinkState;
    string_t
        m_strAllowUse;    // Only this entity name or classname may use the link
    bool m_bInvertAllow;  // Instead of only allowing the m_strAllowUse entity,
                          // exclude only it
    bool m_bUseAirLinkRadius;

    DECLARE_DATADESC();
};

//=============================================================================
//=============================================================================
class CAI_RadialLinkController : public CBaseEntity {
    DECLARE_CLASS(CAI_RadialLinkController, CBaseEntity);

   public:
    void Spawn();
    void Activate();
    void PollMotionThink();
    void ModifyNodeLinks(bool bMakeStale);

   public:
    float m_flRadius;
    Vector m_vecAtRestOrigin;
    bool m_bAtRest;

    DECLARE_DATADESC();
};

#endif  // AI_DYNAMICLINK_H