3秒ルール

「落ちた食べ物は3秒以内に拾えば大丈夫」のやつです。

画面下部中央のお弁当から、定期的におかず（？）が落下します。

落下したおかずをマウスのドラッグでお弁当に戻すと、左下のカウントが1つ増えます。これがスコアです。

ただし、おかずは床に落ちている時間の累計が3秒に達すると緑色に変色します。

この変色したおかずの数が5個に達するとゲームオーバーです。

また、変色したおかずをお弁当に戻してしまうと即ゲームオーバーです。

ゲームオーバーになると、その時点でのスコアが表示されます。

code:Main.cpp

# include <Siv3D.hpp> // OpenSiv3D v0.6.11

struct Food

{

Food(const TextureRegion& texture, const Vec2& pos, const Vec2& from)

: texture{ texture }

, pos{ pos }

, from{ from }

, transition{ 0.2s, 0s }

, remainingTime{ 3 }

{

}

nodiscard

bool isReady() const noexcept

{

return transition.isOne();

}

nodiscard

bool isClean() const noexcept

{

return (remainingTime > 0);

}

nodiscard

Vec2 getPos() const

{

return from.lerp(pos, transition.easeIn());

}

RectF getRegion() const

{

return texture.regionAt(getPos());

}

void move(const Vec2& delta)

{

from += delta;

if (isReady())

{

from = pos;

transition.reset();

}

}

void update(const double deltaTime = Scene::DeltaTime())

{

if (isReady())

{

remainingTime = Max(0.0, remainingTime - deltaTime);

}

else

{

transition.update(true, deltaTime);

}

}

void draw(const Font& font) const

{

const auto maskColor = (isClean() ? Palette::White : Palette::Lightgreen);

texture.drawAt(getPos(), maskColor);

if (isReady())

{

const auto gaugePos = pos.movedBy(-25, -35);

Line{ gaugePos, Arg::direction(50, 0) }.draw(3, Palette::Red);

Line{ gaugePos, Arg::direction(50 * remainingTime / 3, 0) }.draw(3, Palette::White);

const auto textPos = pos.movedBy(0, -40);

const auto textColor = (isClean() ? Palette::White : Palette::Red);

font(U"{:.2f}"_fmt(remainingTime)).drawBaseAt(20, textPos, textColor);

}

}

private:

TextureRegion texture;

Vec2 pos;

Vec2 from;

Transition transition;

double remainingTime;

};

void Main()

{

const Font font{ FontMethod::MSDF, 48, Typeface::Bold };

font.setBufferThickness(3);

const Texture floor{ U"example/texture/wood.jpg" };

constexpr Vec2 BentoPos{ 400, 550 };

constexpr Vec2 MeatPos{ 150, 520 };

constexpr Vec2 GermPos{ 650, 520 };

const Texture bento{ U"🍱"_emoji };

const Texture meat{ U"🍖"_emoji };

const Texture germ{ U"🦠"_emoji };

ColorF bentoColor = Palette::White;

const Array<StringView> foodEmojis

{

U"🌽", U"🍅", U"🍉", U"🍌", U"🍓", U"🍔", U"🍗", U"🍙", U"🍠", U"🍡",

U"🍢", U"🍣", U"🍤", U"🍥", U"🥓", U"🥝", U"🥟", U"🥦", U"🥪", U"🫑",

};

const auto foodTextures = foodEmojis.map([](auto&& emoji) { return Texture{ Emoji{ emoji } }; });

// 3秒以上経ったおかずの数がこれに達するとゲームオーバー

constexpr uint32 SpoiledFoodLimit = 5;

uint32 returnCount = 0;

double nextDropTime = 5; // 秒

bool isOver = false;

Array<Food> droppedFoods;

Optional<std::size_t> grabbedIndex;

while (System::Update())

{

if (MouseL.up() && grabbedIndex)

{

if (bento.scaled(2).regionAt(BentoPos).contains(food.getPos()))

{

if (food.isClean())

{

++returnCount;

}

else

{

isOver = true;

bentoColor = Palette::Lightgreen;

}

droppedFoods.remove_at(*grabbedIndex);

}

grabbedIndex = none;

}

if (grabbedIndex)

{

}

{

if (i == grabbedIndex)

{

Cursor::RequestStyle(CursorStyle::Hand);

continue;

}

food.update();

if ((not isOver) && food.isReady() && food.getRegion().contains(Cursor::PosF()))

{

Cursor::RequestStyle(CursorStyle::Hand);

if (MouseL.down())

{

grabbedIndex = i;

}

}

}

const auto spoiledFoodCount = droppedFoods.count_if([](auto&& food) { return (not food.isClean()); });

if (spoiledFoodCount >= SpoiledFoodLimit)

{

isOver = true;

grabbedIndex = none;

}

if ((not isOver) && (nextDropTime <= Scene::Time()))

{

const auto texture = foodTextures.choice();

const auto pos = RandomVec2(RectF{ 60, 70, 680, 300 });

droppedFoods.emplace_back(texture.scaled(0.5), pos, BentoPos);

nextDropTime += (5.0 / (returnCount * 0.1 + 1));

}

floor.mapped(Scene::Size()).draw(ColorF{ 0.5 });

bento.scaled(2).drawAt(BentoPos, bentoColor);

Circle{ MeatPos, 50 }

.draw(ColorF{ Palette::White, 0.3 })

.drawFrame(10, Palette::White);

meat.scaled(0.5).drawAt(MeatPos);

font(returnCount).drawAt(TextStyle::Outline(0.2, Palette::Black), 50, MeatPos, Palette::White);

Circle{ GermPos, 50 }

.draw(ColorF{ Palette::White, 0.3 })

.drawFrame(10, Palette::White)

.drawArc(0, 360_deg * spoiledFoodCount / SpoiledFoodLimit, 5, 5, Palette::Red);

germ.scaled(0.5).drawAt(GermPos);

font(spoiledFoodCount).drawAt(TextStyle::Outline(0.2, Palette::Black), 50, GermPos, Palette::White);

for (auto&& food : droppedFoods)

{

food.draw(font);

}

if (isOver)

{

Scene::Rect().draw(ColorF{ Palette::Black, 0.2 });

font(U"GAME OVER").drawAt(TextStyle::Outline(0.2, Palette::Black), 100, Vec2{ 400, 230 }, Palette::White);

font(U"SCORE: {}"_fmt(returnCount)).drawAt(TextStyle::Outline(0.2, Palette::Black), 50, Vec2{ 400, 330 }, Palette::White);

if (SimpleGUI::ButtonAt(U"Restart", Vec2{ 400, 400 }))

{

bentoColor = Palette::White;

returnCount = 0;

nextDropTime = Scene::Time() + 5;

isOver = false;

droppedFoods.clear();

}

}

}

}