//
//  KRAnimationCurve.h
//  Kraken Engine
//
//  Copyright 2022 Kearwood Gilbert. All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without modification, are
//  permitted provided that the following conditions are met:
//
//  1. Redistributions of source code must retain the above copyright notice, this list of
//  conditions and the following disclaimer.
//
//  2. Redistributions in binary form must reproduce the above copyright notice, this list
//  of conditions and the following disclaimer in the documentation and/or other materials
//  provided with the distribution.
//
//  THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
//  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
//  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
//  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
//  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
//  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
//  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
//  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
//  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//  The views and conclusions contained in the software and documentation are those of the
//  authors and should not be interpreted as representing official policies, either expressed
//  or implied, of Kearwood Gilbert.
//

#pragma once

#include "KREngine-common.h"
#include "KRContextObject.h"
#include "KRDataBlock.h"
#include "KRResource.h"

class KRAnimationCurve : public KRResource
{

public:
  KRAnimationCurve(KRContext& context, const std::string& name);
  virtual ~KRAnimationCurve();

  virtual std::string getExtension();
  virtual bool save(const std::string& path);
  virtual bool save(KRDataBlock& data);
  virtual bool load(KRDataBlock* data);

  float getFrameRate();
  void setFrameRate(float frame_rate);
  int getFrameStart();
  void setFrameStart(int frame_number);
  int getFrameCount();
  void setFrameCount(int frame_count);
  float getValue(float local_time);
  float getValue(int frame_number);
  void setValue(int frame_number, float value);


  static KRAnimationCurve* Load(KRContext& context, const std::string& name, KRDataBlock* data);

  bool valueChanges(float start_time, float duration);
  bool valueChanges(int start_frame, int frame_count);

  KRAnimationCurve* split(const std::string& name, float start_time, float duration);
  KRAnimationCurve* split(const std::string& name, int start_frame, int frame_count);

  void _lockData();
  void _unlockData();

private:
  KRDataBlock* m_pData;

  typedef struct
  {
    char szTag[16];
    float frame_rate;
    int32_t frame_start;
    int32_t frame_count;
  } animation_curve_header;

};