Turánszki János
77 lines
1.6 KiB
C++
77 lines
1.6 KiB
C++
#pragma once
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#include "CommonInclude.h"
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#include "wiColor.h"
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#include "wiTimer.h"
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#include "wiMath.h"
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#include "wiGraphics.h"
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#include <functional>
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namespace wi
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{
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class FadeManager
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{
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public:
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float opacity = 0;
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float timer = 0;
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float targetFadeTimeInSeconds = 1.0f;
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enum class FadeType
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{
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FadeToColor,
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CrossFade
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} type = FadeType::FadeToColor;
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enum FADE_STATE
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{
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FADE_IN, // no fade -> faded
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FADE_MID, // completely faded
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FADE_OUT, // faded -> no fade
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FADE_FINISHED,
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} state = FADE_FINISHED;
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wi::Color color = wi::Color(0, 0, 0, 255);
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std::function<void()> onFade = [] {};
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bool fadeEventTriggeredThisFrame = false;
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bool crossFadeTextureSaveRequired = false;
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wi::graphics::Texture crossFadeTexture;
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FadeManager()
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{
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Clear();
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}
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void Clear();
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void Start(float seconds, wi::Color color, std::function<void()> onFadeFunction, FadeType fadetype = FadeType::FadeToColor)
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{
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type = fadetype;
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targetFadeTimeInSeconds = seconds;
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this->color = color;
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timer = 0;
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if (IsFaded())
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{
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// If starting a new fade on mid-fadeout, it will start from faded and just transition out of mid
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state = FADE_MID;
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}
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else
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{
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state = FADE_IN;
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}
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onFade = onFadeFunction;
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if (type == FadeType::CrossFade)
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{
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// starts from full faded state and only blends out from it
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state = FADE_MID;
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crossFadeTextureSaveRequired = true;
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fadeEventTriggeredThisFrame = true;
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opacity = 1;
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}
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}
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void Update(float dt);
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bool IsFaded() const
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{
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return fadeEventTriggeredThisFrame;
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}
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bool IsActive() const
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{
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return state != FADE_FINISHED;
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}
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};
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}
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