Shuyi Engine

Features

Ready works today · In progress partly there · Planned has a ticket

• Data driven

  An optional ECS: components as plain structs, systems as functions, queries and a parallel schedule that keeps replays the same. Plain structs stay the default.

  Planned Tickets 2904, 2107 and 2108

• 2D renderer

  Sprite sheets, texture atlases, cameras, rotated and tinted sprites, shapes, nine-slice pictures and materials, on a skin that never touches the rules.

  In progress Tickets 2332, 2222, 2335–2338

• 3D renderer

  Lights, shadows, meshes and glTF, in fixed-point space so 3D stays deterministic, and HD-2D as a skin over a 2D game.

  Planned ADR-0011

• Render graph

  A renderer on wgpu, not tied to one graphics API, with a graph of passes a game can extend.

  Planned Tickets 3034 and 2331

• Animation

  Clips from sprite sheets, state machines, 2D skeletons, and glTF animation with blending and morph targets.

  Planned Tickets 2104, 2105 and 3110

• Cross platform

  The desktop and the web today, then the Steam Deck and the Playdate, each a platform backend. Mobile is planned.

  In progress Platform backends

• UI

  Screens, menus and widgets that say what to show, with layout in the style of flexbox, declared in code or in a file.

  In progress Tickets 2309, 2310, 2329, 2330 and 2355

• Scenes

  Save and load whole worlds as text, keeping their ids, with instances and live reload.

  Planned Ticket 2221

• Sound

  Cues with variants, fades, crossfades, looped sounds with handles and streamed music today; groups with ducking, and positional sound to come.

  In progress Tickets 3029, 2341, 2342, 2343, 2344, 2345 and 2394

• Hot reload of assets

  Change a map, a sprite or a line of dialogue and see it in the running game, for every kind of asset.

  Ready Ticket 2220

• Hot reload of code

  Change a game's code while it runs. Research first, on what Rust allows.

  Planned Ticket 2905

• Fast compiles

  A new game rebuilds in about a second on Linux and two on Windows, on stable Rust, and CI holds every change to that budget.

  Ready The numbers and the setup

• Free and open source

  MIT or Apache-2.0, at your choice, with only permissively licensed dependencies and assets.

  Ready The licenses

• Deterministic, with replays

  The same seed and the same inputs give the same game on every platform: replays, bug reports, bots and tests rest on it.

  Ready ADR-0002

• Made for coding agents

  One tool contract as a CLI, an MCP server and Agent Skills: an agent starts, plays, reads and pictures a game without a window.

  Ready The tool contract

• Targets as data

  Each export target says what its hardware can do, and a game that needs more doesn't export there.

  Ready The targets