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  Ludic v0.2.0 — the types-and-systems release Pre-release

  orkun released this 2026-09-01 02:39:56 +02:00 | 1047 commits to main since this release

  Ludic v0.2.0 — the types-and-systems release

  v0.1.0 stood the toolchain up: a self-hosted, C-free compiler, a deterministic
  2D engine, and a namespaced standard library. v0.2.0 makes it a language you
  can build a real game in. Ludic gets a type system, an engine that runs
  animation and lighting for you, a complete input stack, and the out-of-band
  libraries — audio, networking, concurrency — a game reaches for once the core
  loop works.

  The through-line is unchanged: every feature is gated and additive. A
  program that never mentions a new namespace or type compiles byte-for-byte
  identically to before, and x bootstrap-cfree still proves the compiler
  rebuilds itself bit-exact from the checked-in seed. You pay for what you use and
  nothing else.

  Highlights

  • A real type system. Tagged-union enums with payloads and exhaustive
    match; option and result with try/else recovery; panic/assert
    with file:line messages instead of segfaults; exact BigInt/Decimal and
    display-scale Huge for game economies; Dict/Set containers; and packed,
    allocation-free IVec2/Rect value types.
  • An engine that does the work. Declare a SpriteAnim, Motion, Light2D,
    Occluder or Ambient component and the engine animates, tweens and lights it
    every frame — no handler wired. Lighting reaches render-quality tiers: spot
    cones, soft shadows, colour gels, normal maps and a day/night ramp.
  • A full input stack. Rebindable action maps, a device layer for held keys,
    analog sticks, mouse, gamepads and touch, native macOS hardware bindings, and
    deterministic record/replay of the whole per-frame device state — the seed of
    lockstep netcode.
  • Out-of-band libraries. Audio.* (AVAudioPlayer), Http.* (non-blocking
    HTTP/HTTPS with system TLS), and a layered Job/Promise/Sync concurrency
    library — all frame-driven and replay-safe, none of them ever feeding the
    deterministic simulation.
  • Testing you can trust. A built-in test { … } framework with
    expect/expect_eq/expect_near, now with --coverage line reporting.

  Determinism, still guaranteed

  Everything gameplay-facing is integer / Q16.16 fixed-point and reproduces
  bit-for-bit across runs and platforms. The genuinely real-time surfaces — audio
  output, HTTP, wall-clock — are explicitly out-of-band and never touch the
  lockstep world, so recorded and replayed runs stay exact. Job results are
  collected on the main thread at a point you choose; a Job never mutates the
  ECS world directly.

  Install / upgrade

  git fetch --tags
  git checkout v0.2.0
  bin/x build-cli     # rebuild ludicc / ludic from the seed (clang only)
  bin/x test          # 86 checks, all green
  

  ludicc --version reads the VERSION file at runtime and now reports 0.2.0.

  Artifacts

  • ludic-0.2.0-src.tar.gz — reproducible source + LLVM-IR seed.
  • ludic-0.2.0-<platform>-<arch>.tar.gz — the prebuilt macOS toolchain (bin/,
    the seed, VERSION).

  Compatibility

  Additive and backward-compatible with v0.1.0 — no removals, no breaking changes
  to existing programs. Native audio, HTTP and gamepad backends are macOS-only for
  now; every one of those APIs is present and dead-stripped to a no-op on headless
  targets, so the same game code compiles and runs under the test harness
  everywhere.

  See CHANGELOG.md for the full, itemized list.

  Downloads

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  • Source code (TAR.GZ)
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  • ludic-0.2.0-darwin-arm64.tar.gz
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  • ludic-0.2.0-src.tar.gz
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