web_resize.cpp

# include <Siv3D.hpp>

void Main()
{
    Window::Resize(1280, 720);

    // Set background color to sky blue
    Scene::SetBackground(ColorF{ 0.8, 0.9, 1.0 });

    // Create a new font
    const Font font{ 60 };

    // Coordinates of the emoji
    Vec2 emojiPos{ 300, 150 };

    // Print a text
    Print << U"Push [A] key";

    while (System::Update())
    {
        // Put a text in the middle of the screen
        font(U"Hello, Siv3D!").drawAt(Scene::Center(), Palette::Black);

        // Draw a red transparent circle that follows the mouse cursor
        Circle{ Cursor::Pos(), 40 }.draw(ColorF{ 1, 0, 0, 0.5 });

        // When [A] key is down
        if (KeyA.down())
        {
            // Print a randomly selected text
            Print << Sample({ U"Hello!", U"こんにちは", U"你好", U"안녕하세요?" });
        }

        // When [Button] is pushed
        if (SimpleGUI::Button(U"Button", Vec2{ 640, 40 }))
        {
            // Move the coordinates to a random position in the screen
            emojiPos = RandomVec2(Scene::Rect());
        }
    }
}