//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//===========================================================================//

#ifndef WEAPON_IFMSTEADYCAM_H
#define WEAPON_IFMSTEADYCAM_H
#ifdef _WIN32
#pragma once
#endif

#include "weapon_ifmbasecamera.h"

#if defined(CLIENT_DLL)
#define CWeaponIFMSteadyCam C_WeaponIFMSteadyCam
#endif

class CWeaponIFMSteadyCam : public CWeaponIFMBaseCamera {
   public:
    DECLARE_CLASS(CWeaponIFMSteadyCam, CWeaponIFMBaseCamera);
    DECLARE_NETWORKCLASS();
    DECLARE_PREDICTABLE();

#ifdef GAME_DLL
    DECLARE_DATADESC();
#endif

   public:
    // Shared code
    CWeaponIFMSteadyCam();
    virtual ~CWeaponIFMSteadyCam();

    virtual void ItemPostFrame();

   private:
#ifdef CLIENT_DLL

   public:
    // Client code
    virtual void CreateMove(float flInputSampleTime, CUserCmd *pCmd,
                            const QAngle &vecOldViewAngles);
    virtual void DrawCrosshair(void);
    virtual void GetToolRecordingState(KeyValues *msg);

   private:
    // Purpose: Draw the weapon's crosshair
    void DrawArmLength(int x, int y, int w, int h, Color clr);
    void DrawFOV(int x, int y, int w, int h, Color clrEdges, Color clrTriangle);

    // Transmits the lock target
    void TransmitLockTarget();

    // Updates the relative orientation of the camera
    void UpdateRelativeOrientation();
    void UpdateLockedRelativeOrientation();
    void UpdateDirectRelativeOrientation();

    // Computes a matrix given a forward direction
    void MatrixFromForwardDirection(const Vector &vecForward, matrix3x4_t &mat);

    // Targets the camera to always look at a point
    void LockCamera();

    // Toggles to springy camera
    void ToggleSpringCamera();
    void ToggleDirectMode();

    // Compute the location of the camera for rendering
    virtual void ComputeAbsCameraTransform(Vector &origin, QAngle &angles);

    // Updates the relative orientation of the camera, spring mode
    void ComputeMouseRay(const VMatrix &steadyCamToPlayer, Vector &vecForward);

    // Updates the 2d spring
    void ComputeViewOffset();

    bool m_bIsLocked;
    bool m_bInDirectMode;
    bool m_bInSpringMode;
    Vector m_vecOffset;

    Vector m_vec2DVelocity;
    Vector m_vecActualViewOffset;
    Vector m_vecViewOffset;
    float m_flFOVOffsetY;

    vgui::HFont m_hFont;
    int m_nTextureId;
#endif  // CLIENT_DLL

#ifdef GAME_DLL
   public:
    // Server code
#endif  // GAME_DLL

   private:
    EHANDLE m_hLockTarget;

   private:
    CWeaponIFMSteadyCam(const CWeaponIFMSteadyCam &);
};

#endif  // WEAPON_IFMSTEADYCAM_H