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#include <Siv3D.hpp> // Siv3D v0.6.14 | |
#include <CoTaskLib.hpp> // CoTaskLib v0.2.0 | |
class Twinkle : public Co::SequenceBase<> | |
{ | |
public: | |
Twinkle(const Vec2& pos) | |
: pos_{ pos } | |
{ | |
tweener_.setPivot(pos); | |
tweener_.setRotation(Random(Math::TwoPi)); | |
scale_ = Random(0.1, 1.0); | |
} | |
private: | |
Co::Task<> start() override | |
{ | |
const double moveDist = Random(16.0, 200.0); | |
const double moveAngle = Random(Math::TwoPi); | |
const auto _ = tweener_ | |
.tweenPosition(0.4s) | |
.fromTo(Circular{ moveDist * Random(0.3, 1.0), moveAngle}, Circular{ moveDist, moveAngle }) | |
.setEase(EaseOutSine) | |
.playScoped(); | |
co_await Co::All( | |
tweener_.fadeInAlpha(0.07s).play(), | |
tweener_.tweenScale(0.1s).from(0.2 * scale_).to(1.0 * scale_).play() | |
); | |
co_await Co::All( | |
tweener_.fadeOutAlpha(0.3s).play(), | |
tweener_.tweenRotation(0.3s).to(tweener_.rotation() + Math::Pi / 16.0).play(), | |
tweener_.tweenScale(0.3s).from(1.0 * scale_).to(0.98 * scale_).play() | |
); | |
} | |
void draw() const override | |
{ | |
{ | |
const auto _ = tweener_.applyScoped(); | |
Shape2D::Astroid(pos_, 48, 48).draw(); | |
} | |
} | |
Vec2 pos_; | |
double scale_; | |
Co::Tweener tweener_; | |
}; | |
class Ripple : public Co::SequenceBase<> | |
{ | |
public: | |
Ripple(const Vec2& pos) | |
: pos_{ pos } | |
{ | |
tweener_.setPivot(pos); | |
} | |
private: | |
Co::Task<> start() override | |
{ | |
co_await Co::All( | |
tweener_.tweenScale(0.3s).from(0.3).to(1.0).setEase(EaseOutCirc).play(), | |
tweener_.fadeOutAlpha(0.3s).play() | |
); | |
} | |
void draw() const override | |
{ | |
{ | |
const auto _ = tweener_.applyScoped(); | |
Circle{ pos_, 170 }.drawFrame(5.0); | |
} | |
} | |
Vec2 pos_; | |
Co::Tweener tweener_; | |
}; | |
// ※ タスク開始時、内部的に中断する仕様のため `const Vec2& pos` などとして | |
// 一時オブジェクトの参照を渡すとダングリング参照となることに注意 | |
Co::Task<> GenerateClickEffect(Co::MultiRunner& mr, const Vec2 pos) | |
{ | |
Co::Play<Ripple>(pos).runAddTo(mr); | |
for (int i = 0; i < 16; ++i) | |
{ | |
Co::Play<Twinkle>(pos).runAddTo(mr); | |
co_await Co::Delay(1s * Random(0.0, 0.025)); | |
} | |
co_return; | |
} | |
void Main() | |
{ | |
Scene::SetBackground(Palette::Slateblue); | |
Co::Init(); | |
Co::MultiRunner twinkleRunner; | |
twinkleRunner.reserve(128); | |
while (System::Update()) | |
{ | |
if (MouseL.down()) | |
{ | |
GenerateClickEffect(twinkleRunner, Cursor::PosF()).runAddTo(twinkleRunner); | |
} | |
twinkleRunner.removeDone(); | |
} | |
} |
Author
voidproc
commented
Jun 25, 2024
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