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vcmi/client/render/CFadeAnimation.h

54 lines
1.0 KiB
C++

/*
* CFadeAnimation.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
#ifdef IN
#undef IN
#endif
#ifdef OUT
#undef OUT
#endif
VCMI_LIB_NAMESPACE_BEGIN
class Point;
VCMI_LIB_NAMESPACE_END
struct SDL_Surface;
const float DEFAULT_DELTA = 0.05f;
class CFadeAnimation
{
public:
enum class EMode
{
NONE, IN, OUT
};
private:
float delta;
SDL_Surface * fadingSurface;
bool fading;
float fadingCounter;
bool shouldFreeSurface;
float initialCounter() const;
bool isFinished() const;
public:
EMode fadingMode;
CFadeAnimation();
~CFadeAnimation();
void init(EMode mode, SDL_Surface * sourceSurface, bool freeSurfaceAtEnd = false, float animDelta = DEFAULT_DELTA);
void update();
void draw(SDL_Surface * targetSurface, const Point & targetPoint);
bool isFading() const { return fading; }
};