Siv3D

Siv3D (OpenSiv3D) is a C++20 framework for creative coding (2D/3D games, media art, visualizers, and simulators). Siv3D applications run on Windows, macOS, Linux, and the Web.

Features

Graphics
- Advanced 2D graphics
- Basic 3D graphics (Wavefront OBJ, primitive shapes)
- Custom vertex / pixel shaders (HLSL, GLSL)
- Text rendering (Bitmap, SDF, MSDF)
- PNG, JPEG, BMP, SVG, GIF, Animated GIF, TGA, PPM, WebP, TIFF
- Unicode 15.1 emojis and 7,000+ icons
- Image processing
- Video rendering
Audio
- WAVE, MP3, AAC, OggVorbis, Opus, MIDI, WMA*, FLAC*, AIFF*
- Adjustable volume, pan, play speed and pitch
- File streaming (WAVE, MP3, OggVorbis)
- Fade in and fade out
- Looping
- Mixing busses
- Filters (LPF, HPF, echo, reverb)
- FFT
- SoundFont rendering
- Text to speech*
Input
- Mouse
- Keyboard
- Gamepad
- Webcam
- Microphone
- Joy-Con / Pro Controller
- XInput*
- Digital drawing tablet*
- Leap Motion*
Window
- Fullscreen mode
- High DPI support
- Window styles (sizable, borderless)
- File dialog
- Drag & drop
- Message box
- Toast notification*
Network and communication
- HTTP client
- Multiplayer (with Photon SDK)
- TCP communication
- Serial communication
- Interprocess communication (pipe)
- OSC (Open Sound Control)
Math
- Vector and matrix classes (Point, Float2, Vec2, Float3, Vec3, Float4, Vec4, Mat3x2, Mat3x3, Mat4x4, SIMD_Float4, Quaternion)
- 2D shape classes (Line, Circle, Ellipse, Rect, RectF, Triangle, Quad, RoundRect, Polygon, MultiPolygon, LineString, Spline2D, Bezier2, Bezier3)
- 3D shape classes (Plane, InfinitePlane, Sphere, Box, OrientedBox, Ray, Line3D, Triangle3D, ViewFrustum, Disc, Cylinder, Cone)
- Color classes (Color, ColorF, HSV)
- Polar / cylindrical / spherical coordinates system
- 2D / 3D shape intersection
- 2D / 3D geometry processing
- Rectangle packing
- Planar subdivisions
- Linear and gamma color space
- Pseudo random number generators
- Interpolation, easing, and smoothing
- Perlin noise
- Math parser
- Navigation mesh
- Extended arithmetic types (HalfFloat, int128, uint128, BigInt, BigFloat)
String and Text Processing
- Advanced String class (String, StringView)
- Unicode conversion
- Regular expression
- {fmt} style text formatting
- Text reader / writer classes
- CSV / INI / JSON / XML / TOML reader classes
- CSV / INI / JSON writer classes
- JSON Validation
Misc
- Basic GUI (button, slider, radio buttons, checkbox, text box, color picker, list box, menu bar, table)
- Integrated 2D physics engine (Box2D)
- Advanced array / 2D array classes (Array, Grid)
- Kd-tree
- Disjoint set
- Asynchronous asset file streaming
- Data compression (zlib, Zstandard)
- Transitions between scenes
- File system
- Directory watcher
- QR code reader / writer
- GeoJSON
- Date and time
- Stopwatch and timer
- Logging
- Serialization
- UUID
- Child process
- Clipboard
- Power status
- Scripting (AngelScript)
- OpenAI API (Chat, Vision, Image, Speech, Embedding)

* Some features are limited to specific platforms

How to Install Siv3D + Tutorial

(English) Getting Started with Siv3D: https://siv3d.github.io/en-us/
(日本語) Siv3D をはじめよう: https://siv3d.github.io/ja-jp/

v0.6.15 | released 3 July 2024 | Release Notes

Platform	SDK	Requirements
Windows	Download SDK / SDK をダウンロード	- Windows 10 / 11 (64-bit) - Microsoft Visual C++ 2022 17.10 - Windows 10 SDK - Intel / AMD CPU
macOS	Download SDK / SDK をダウンロード	- macOS Big Sur / Monterey / Ventura - Xcode 12.5 or newer - Intel CPU / Apple Silicon (Rosetta mode)* - OpenGL 4.1 compatible hardware
Linux	Compiling for Linux / Linux 版のビルド	- GCC 9.3.0 (with Boost 1.71.0) / GCC 11.2 (with Boost 1.74.0) - Intel / AMD CPU - OpenGL 4.1 compatible hardware
Web (experimental**)	Compiling for Web / Web 版のビルド	Web browser with WebAssembly and WebGL2 support

* Native Apple Silicon support will be added in the future release. You can build and run Siv3D in Rosetta mode
** Some functionality may be missing or limited

Next Major Update

The next major update, Siv3D v0.8, is under development in the following repository.

https://github.com/Siv3D/siv8

Community

Siv3D Discord Server

Miscellaneous

Supporting the Project

If you would like to support the project financially, visit my GitHub Sponsors page. Your support will accelerate the development of this exciting framework.

💗 https://github.com/sponsors/Reputeless

Examples

1. Hello, Siv3D!

# include <Siv3D.hpp>

void Main()
{
	// 背景の色を設定する | Set the background color
	Scene::SetBackground(ColorF{ 0.6, 0.8, 0.7 });

	// 画像ファイルからテクスチ�
8000
�を作成する | Create a texture from an image file
	const Texture texture{ U"example/windmill.png" };

	// 絵文字からテクスチャを作成する | Create a texture from an emoji
	const Texture emoji{ U"🦖"_emoji };

	// 太文字のフォントを作成する | Create a bold font with MSDF method
	const Font font{ FontMethod::MSDF, 48, Typeface::Bold };

	// テキストに含まれる絵文字のためのフォントを作成し、font に追加する | Create a font for emojis in text and add it to font as a fallback
	const Font emojiFont{ 48, Typeface::ColorEmoji };
	font.addFallback(emojiFont);

	// ボタンを押した回数 | Number of button presses
	int32 count = 0;

	// チェックボックスの状態 | Checkbox state
	bool checked = false;

	// プレイヤーの移動スピード | Player's movement speed
	double speed = 200.0;

	// プレイヤーの X 座標 | Player's X position
	double playerPosX = 400;

	// プレイヤーが右を向いているか | Whether player is facing right
	bool isPlayerFacingRight = true;

	while (System::Update())
	{
		// テクスチャを描く | Draw the texture
		texture.draw(20, 20);

		// テキストを描く | Draw text
		font(U"Hello, Siv3D!🎮").draw(64, Vec2{ 20, 340 }, ColorF{ 0.2, 0.4, 0.8 });

		// 指定した範囲内にテキストを描く | Draw text within a specified area
		font(U"Siv3D (シブスリーディー) は、ゲームやアプリを楽しく簡単な C++ コードで開発できるフレームワークです。")
			.draw(18, Rect{ 20, 430, 480, 200 }, Palette::Black);

		// 長方形を描く | Draw a rectangle
		Rect{ 540, 20, 80, 80 }.draw();

		// 角丸長方形を描く | Draw a rounded rectangle
		RoundRect{ 680, 20, 80, 200, 20 }.draw(ColorF{ 0.0, 0.4, 0.6 });

		// 円を描く | Draw a circle
		Circle{ 580, 180, 40 }.draw(Palette::Seagreen);

		// 矢印を描く | Draw an arrow
		Line{ 540, 330, 760, 260 }.drawArrow(8, SizeF{ 20, 20 }, ColorF{ 0.4 });

		// 半透明の円を描く | Draw a semi-transparent circle
		Circle{ Cursor::Pos(), 40 }.draw(ColorF{ 1.0, 0.0, 0.0, 0.5 });

		// ボタン | Button
		if (SimpleGUI::Button(U"count: {}"_fmt(count), Vec2{ 520, 370 }, 120, (checked == false)))
		{
			// カウントを増やす | Increase the count
			++count;
		}

		// チェックボックス | Checkbox
		SimpleGUI::CheckBox(checked, U"Lock \U000F033E", Vec2{ 660, 370 }, 120);

		// スライダー | Slider
		SimpleGUI::Slider(U"speed: {:.1f}"_fmt(speed), speed, 100, 400, Vec2{ 520, 420 }, 140, 120);

		// 左キーが押されていたら | If left key is pressed
		if (KeyLeft.pressed())
		{
			// プレイヤーが左に移動する | Player moves left
			playerPosX = Max((playerPosX - speed * Scene::DeltaTime()), 60.0);
			isPlayerFacingRight = false;
		}

		// 右キーが押されていたら | If right key is pressed
		if (KeyRight.pressed())
		{
			// プレイヤーが右に移動する | Player moves right
			playerPosX = Min((playerPosX + speed * Scene::DeltaTime()), 740.0);
			isPlayerFacingRight = true;
		}

		// プレイヤーを描く | Draw the player
		emoji.scaled(0.75).mirrored(isPlayerFacingRight).drawAt(playerPosX, 540);
	}
}

2. Breakout

# include <Siv3D.hpp>

void Main()
{
	// 1 つのブロックのサイズ | Size of a single block
	constexpr Size BrickSize{ 40, 20 };

	// ボールの速さ（ピクセル / 秒） | Ball speed (pixels / second)
	constexpr double BallSpeedPerSec = 480.0;

	// ボールの速度 | Ball velocity
	Vec2 ballVelocity{ 0, -BallSpeedPerSec };

	// ボール | Ball
	Circle ball{ 400, 400, 8 };

	// ブロックの配列 | Array of bricks
	Array<Rect> bricks;

	for (int32 y = 0; y < 5; ++y)
	{
		for (int32 x = 0; x < (Scene::Width() / BrickSize.x); ++x)
		{
			bricks << Rect{ (x * BrickSize.x), (60 + y * BrickSize.y), BrickSize };
		}
	}

	while (System::Update())
	{
		// パドル | Paddle
		const Rect paddle{ Arg::center(Cursor::Pos().x, 500), 60, 10 };

		// ボールを移動させる | Move the ball
		ball.moveBy(ballVelocity * Scene::DeltaTime());

		// ブロックを順にチェックする | Check bricks in sequence
		for (auto it = bricks.begin(); it != bricks.end(); ++it)
		{
			// ブロックとボールが交差していたら | If block and ball intersect
			if (it->intersects(ball))
			{
				// ブロックの上辺、または底辺と交差していたら | If ball intersects with top or bottom of the block
				if (it->bottom().intersects(ball) || it->top().intersects(ball))
				{
					// ボールの速度の Y 成分の符号を反転する | Reverse the sign of the Y component of the ball's velocity
					ballVelocity.y *= -1;
				}
				else // ブロックの左辺または右辺と交差していたら
				{
					// ボールの速度の X 成分の符号を反転する | Reverse the sign of the X component of the ball's velocity
					ballVelocity.x *= -1;
				}

				// ブロックを配列から削除する（イテレータは無効になる） | Remove the block from the array (the iterator becomes invalid)
				bricks.erase(it);

				// これ以上チェックしない | Do not check any more
				break;
			}
		}

		// 天井にぶつかったら | If the ball hits the ceiling
		if ((ball.y < 0) && (ballVelocity.y < 0))
		{
			// ボールの速度の Y 成分の符号を反転する | Reverse the sign of the Y component of the ball's velocity
			ballVelocity.y *= -1;
		}

		// 左右の壁にぶつかったら | If the ball hits the left or right wall
		if (((ball.x < 0) && (ballVelocity.x < 0))
			|| ((Scene::Width() < ball.x) && (0 < ballVelocity.x)))
		{
			// ボールの速度の X 成分の符号を反転する | Reverse the sign of the X component of the ball's velocity
			ballVelocity.x *= -1;
		}

		// パドルにあたったら | If the ball hits the left or right wall
		if ((0 < ballVelocity.y) && paddle.intersects(ball))
		{
			// パドルの中心からの距離に応じてはね返る方向（速度ベクトル）を変える | Change the direction (velocity vector) of the ball depending on the distance from the center of the paddle
			ballVelocity = Vec2{ (ball.x - paddle.center().x) * 10, -ballVelocity.y }.setLength(BallSpeedPerSec);
		}

		// すべてのブロックを描画する | Draw all the bricks
		for (const auto& brick : bricks)
		{
			// ブロックの Y 座標に応じて色を変える | Change the color of the brick depending on the Y coordinate
			brick.stretched(-1).draw(HSV{ brick.y - 40 });
		}

		// マウスカーソルを非表示にする | Hide the mouse cursor
		Cursor::RequestStyle(CursorStyle::Hidden);

		// ボールを描く | Draw the ball
		ball.draw();

		// パドルを描く | Draw the paddle
		paddle.rounded(3).draw();
	}
}

3. Hello, 3D world!

# include <Siv3D.hpp>

void Main()
{
	// Resize the window and scene to 1280x720
	Window::Resize(1280, 720);

	// Background color (remove SRGB curve for a linear workflow)
	const ColorF backgroundColor = ColorF{ 0.4, 0.6, 0.8 }.removeSRGBCurve();

	// Texture for UV check (mipmapped. treat as SRGB texture in a linear workflow)
	const Texture uvChecker{ U"example/texture/uv.png", TextureDesc::MippedSRGB };

	// Multisample RenderTexture for a linear workflow
	const MSRenderTexture renderTexture{ Scene::Size(), TextureFormat::R8G8B8A8_Unorm_SRGB, HasDepth::Yes };

	// 3D debug camera (free camera)
	// Vertical FOV: 30°, Eye position: (10, 16, -32)
	// Move: [W][S][A][D][E][X], View: [arrow keys]
	DebugCamera3D camera{ renderTexture.size(), 30_deg, Vec3{ 10, 16, -32 } };

	while (System::Update())
	{
		// Update a camera
		camera.update(2.0);

		// Set up a camera in the current 3D scene
		Graphics3D::SetCameraTransform(camera);

		// [3D rendering]
		{
			// Clear renderTexture with the background color,
			// then make renderTexture the render target for the current 3D scene
			const ScopedRenderTarget3D target{ renderTexture.clear(backgroundColor) };

			// Draw a floor
			Plane{ 64 }.draw(uvChecker);

			// Draw a box
			Box{ -8,2,0,4 }.draw(ColorF{ 0.8, 0.6, 0.4 }.removeSRGBCurve());

			// Draw a sphere
			Sphere{ 0,2,0,2 }.draw(ColorF{ 0.4, 0.8, 0.6 }.removeSRGBCurve());

			// Draw a cylinder
			Cylinder{ 8, 2, 0, 2, 4 }.draw(ColorF{ 0.6, 0.4, 0.8 }.removeSRGBCurve());
		}

		// [2D rendering]
		{
			// Flush 3D rendering commands before multisample resolve
			Graphics3D::Flush();

			// Multisample resolve
			renderTexture.resolve();

			// Transfer renderTexture to the current 2D scene (default scene)
			Shader::LinearToScreen(renderTexture);
		}
	}
}

Name		Name	Last commit message	Last commit date
Latest commit History 6,524 Commits
.github		.github
Dependencies/boost_1_74_0		Dependencies/boost_1_74_0
Linux		Linux
Siv3D		Siv3D
Test		Test
Web		Web
WindowsDesktop		WindowsDesktop
macOS		macOS
.gitignore		.gitignore
ARCHITECTURE.md		ARCHITECTURE.md
AUTHORS		AUTHORS
CITATION.cff		CITATION.cff
CONTRIBUTING.ja.md		CONTRIBUTING.ja.md
CONTRIBUTING.md		CONTRIBUTING.md
LICENSE		LICENSE
README.md		README.md
ThirdParty.md		ThirdParty.md

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Siv3D

Features

How to Install Siv3D + Tutorial

Next Major Update

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Miscellaneous

Supporting the Project

Examples

1. Hello, Siv3D!

2. Breakout

3. Hello, 3D world!

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Features

How to Install Siv3D + Tutorial

Next Major Update

Community

Miscellaneous

Supporting the Project

Examples

1. Hello, Siv3D!

2. Breakout

3. Hello, 3D world!

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