A pass is keyed by the content of the harness's dependencies, so it is
also valid in any worktree with the same files. Passes are published to
parity-shared/ beside the shared vanilla data, and a worktree adopts one
whose key matches its own files instead of running the harness: an
agent's gate only runs what its own changes affect, instead of the whole
suite from scratch. Every runner on the machine also shares
PARITY_MACHINE_JOBS slots, so several agents' gates can't overload it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Opening a world saved by an older version runs the file fixes, level.dat and
the DataFixers upgrades of every file instead of refusing it. The save
round-trip harness treats a lit campfire's cooking progress as a timer in the
vanilla views: Horizon saves it as loaded (stage 3 checks it exactly), and it
moves on by however many ticks each vanilla server ran before data get.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
tools/parity_shim.py stands in for java and javac in harness runs: it
records each oracle run's outputs and the content of every file under the
paths its arguments name, and replays the run while those are unchanged.
After a Rust-only change a harness only pays for its Rust side
(block_update 53 s -> 5 s). A harness that fails while reusing oracle
results is rerun fresh, and stops reusing them if that passes; --all and
--fresh never reuse them.
Harness probes built in the dev profile are optimised (overflow checks
and debug assertions kept), and the chunk generation harness runs its
vanilla and Horizon sides concurrently.
HORIZON_NO_AUDIO keeps the game off the speakers; tools/parity.py sets it,
since the save round-trip harness launches the game on a virtual screen.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
tools/parity.py traces each harness (its Python, Java oracle sources and
the Rust sources of the probes it runs, from Cargo's dep-info) and reruns
it only when one of those, the vanilla artifacts or the toolchains change.
Harnesses run in parallel within the available memory, and their probes
build without LTO and with 16 codegen units into .local/parity-target: a
one-line change rebuilds every horizon-world probe in 3 seconds instead of
122. The full suite takes about 20 minutes instead of an hour.
tools/gate.py is the check a branch passes before integration, and
tools/supervise.py manages the per-area worktrees: status, new worktrees,
saving unfinished work, and integrating a branch only when the gate passes.
Harnesses find probes through lab.cargo_target() instead of a hard-coded
target/, the save round-trip harness builds the binaries it launches, and
the mob AI harness now fails on divergences like every other harness
(--report-only keeps the old behaviour). Debug builds keep line tables
only, so worktrees stay small.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
tools/rea_vanilla.py runs REA's JADX provider over the pinned client and
server JARs: class search, class members, method bodies and callers
(including lambdas). REA and the JADX engine are pinned in
research-lock.json.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The client random-ticked every section with a non-air block, drawing
getBlockRandomPos positions vanilla never draws. It now ticks a section only
when its palette holds a randomly ticking state, as
LevelChunkSection.isRandomlyTicking does (lava counts through LiquidBlock).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Brings main's sync_level()/save_game() split and the world ticks inside
`if running {}` into the typed block entity NBT, save roundtrip harness and
session.lock work. The only textual conflict was in recipe_book.rs, where
the player file writer keeps main's toBeDisplayed list alongside the
recipes list. fmt, clippy -D warnings and the whole workspace test suite
pass.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
The vanilla differential run showed Horizon writing fields vanilla leaves out: empty scoreboard parts, recipe book settings at their default, an empty warden anger list. These are now omitted, and mobs loaded without saved equipment no longer receive the default bow. Opening a world whose level.dat is older than 26.3 now fails with a message naming tools/upgrade_world.py, which runs vanilla's own forceUpgrade on a copy. The roundtrip harness lists the timing-dependent differences it tolerates, and horizon-ctl waits up to five minutes for the control socket on a loaded machine.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
The section mesher blended biome colours over quart cells at the section's
mid-height. It now follows ClientLevel.calculateBlockTint: each tinted block
averages the colours of the biomes BiomeManager picks (the eight-corner
zoom with the client's hashed seed) over the biomeBlendRadius square at the
block's own height, computed lazily per layer and column. The ao and
cutoutLeaves options are honoured too: flat lighting, skipped faces between
opaque leaves and a vertex layer flag that makes the terrain shader ignore
leaf alpha.
The section mesh parity gate gained biome-blend scenes (random zoom seeds,
radii 0 to 7, all 67 biomes, real Biome colour resolvers through a
BiomeManager in the Java oracle) and option scenes; all 1.0M quads of the 112
scenes match the client.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
GitHub releases were deleted; the Mac starter and packs are built with
tools/build_release.py instead of downloaded.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
`--control` opens a local Unix socket; horizon-ctl sends text commands and
prints JSON replies. Scripts can read status, press keys and mouse buttons,
look, teleport, give items, change render distance, take PNG screenshots
of the presented frame, and benchmark frame times without a person at the
keyboard. Under control, losing focus no longer pauses the game.
Key presses and play-screen mouse buttons move into shared methods so the
window and the socket take the same paths.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Score fourteen subsystems against the code (55% overall) and test that the
README percentage matches the table. Fluids, redstone, crop growth and the
Nether already run in the client; the native-client status still described
the old test-generator terrain without mobs or containers.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The Rust rewrite now targets one Linux machine (Ubuntu 26.04, i7-13700KF,
RTX 4080, GNOME on Wayland). macOS and Windows are out of scope; the Java
packs, including the Mac starter, remain available but are no longer developed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Horizon now targets Linux and macOS only: remove the Windows CI runners and
wgpu's DX12 backend, and update the scope docs. The Ubuntu RTX 4080 desktop
becomes the first physical Linux target. tools/package_native_client.py bundles
a release build with its prepared resources and a launcher for playing on
another machine of the same platform.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The game opens on a vanilla-style title screen (logo, Singleplayer,
Quit) over the spinning title panorama. Select World lists saves by
last play with game mode; Create New World takes a name, a seed
(numbers or text hashed like vanilla) and the game mode, and finds a
free folder name. Save and Quit returns to the title. README and the
parity status now describe the playable Rust game.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Refresh scale dimensions and clamp health and absorption after movement, preserving native callback order and queued synchronization. Replay per-reference JVM identities in the scene comparison and cover changing limits, modifiers and low tunnels. Waypoint callbacks remain explicit requests for the future manager runtime.
Connect Shift input timing, dry pose fit, movement slowdown and eye height to the resident walking scene. Compare exact evolving state against pinned native client/server methods and record Linux window validation. Full gameplay and release acceptance remain unfinished.
Ludovic Marie