camerashakesystem.h

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/*
**  Command & Conquer Generals Zero Hour(tm)
**  Copyright 2025 Electronic Arts Inc.
**
**  This program is free software: you can redistribute it and/or modify
**  it under the terms of the GNU General Public License as published by
**  the Free Software Foundation, either version 3 of the License, or
**  (at your option) any later version.
**
**  This program is distributed in the hope that it will be useful,
**  but WITHOUT ANY WARRANTY; without even the implied warranty of
**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
**  GNU General Public License for more details.
**
**  You should have received a copy of the GNU General Public License
**  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
 
/***********************************************************************************************
 ***              C O N F I D E N T I A L  ---  W E S T W O O D  S T U D I O S               ***
 ***********************************************************************************************
 *                                                                                             *
 *                 Project Name : WWPhys                                                       *
 *                                                                                             *
 *                     $Archive:: /Commando/Code/wwphys/camerashakesystem.h                   $*
 *                                                                                             *
 *              Original Author:: Greg Hjelstrom                                               *
 *                                                                                             *
 *                      $Author:: Greg_h                                                      $*
 *                                                                                             *
 *                     $Modtime:: 7/13/00 4:06p                                               $*
 *                                                                                             *
 *                    $Revision:: 1                                                           $*
 *                                                                                             *
 *---------------------------------------------------------------------------------------------*
 * Functions:                                                                                  *
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
 
#ifndef CAMERASHAKESYSTEM_H
#define CAMERASHAKESYSTEM_H
 
 
#include "always.h"
#include "vector3.h"
#include "multilist.h"
#include "mempool.h"
 
class CameraClass;

class CameraShakeSystemClass
{
public:
 
    CameraShakeSystemClass(void);
    ~CameraShakeSystemClass(void);
 
    enum 
    {
        FLAGS_NONE = 0,
        FLAGS_IGNOREPOSITION,
    };
    
    void        Add_Camera_Shake(       const Vector3 & position,
                                            float radius = 50.0f,
                                            float duration = 1.5f,
                                            float power = 1.0f  );
    void        Timestep(float dt);
    bool        IsCameraShaking(void);
    void        Update_Camera_Shaker(Vector3 camera_position, Vector3 * shaker_angles);
 
protected:

    class CameraShakerClass : public MultiListObjectClass, public AutoPoolClass<CameraShakerClass,256>
    {   
    public:
        CameraShakerClass(const Vector3 & position,float radius,float duration,float power);
        ~CameraShakerClass(void);
 
        void                    Timestep(float dt)                          { ElapsedTime += dt; }   
        bool                    Is_Expired(void)                              { return (ElapsedTime >= Duration); }
        void                    Compute_Rotations(const Vector3 & pos,Vector3 * set_angles);
 
    protected:
 
        Vector3              Position;
        float                   Radius;
        float                   Duration;
        float                   Intensity;
    
        float                   ElapsedTime;
        Vector3              Omega;
        Vector3              Phi;
    };
 
    MultiListClass<CameraShakerClass>  CameraShakerList;
 
};
 
extern CameraShakeSystemClass CameraShakerSystem; //WST 11/12/2002 This is the new Camera Shaker system upgrade
 
 
#endif //CAMERASHAKESYSTEM_H