#pragma once

void Environment_Init(SEnvironmentData& envData);
bool Environment_Load(SEnvironmentData& envData, const char* envFileName);


void GetInterpolatedPosition(float curPositionRate, TPixelPosition * PixelPosition);
float GetLinearInterpolation(float begin, float end, float curRate);

void PixelPositionToAttributeCellPosition(TPixelPosition PixelPosition, TCellPosition * pAttrCellPosition);
void AttributeCellPositionToPixelPosition(TCellPosition AttrCellPosition, TPixelPosition * pPixelPosition);

float GetPixelPositionDistance(const TPixelPosition & c_rsrcPosition, const TPixelPosition & c_rdstPosition);

class CEaseOutInterpolation
{
	public:
		CEaseOutInterpolation();
		virtual ~CEaseOutInterpolation();

		void Initialize();

		BOOL Setup(float fStart, float fEnd, float fTime);
		void Interpolate(float fElapsedTime);
		BOOL isPlaying();

		float GetValue();
		float GetChangingValue();

	protected:
		float m_fRemainingTime;
		float m_fValue;
		float m_fSpeed;
		float m_fAcceleration;

		float m_fStartValue;
		float m_fLastValue;
};