Changelog

1.2.0

Ports the mod to Minecraft 26.2 (Fabric API 0.156.0+26.2). This build no longer supports 26.1.2 - install the 1.1.0 release instead if you're still on that version.

Changed

• 26.2 moved setOverlayMessage() and getChat() off the Gui class onto a new Hud class (reached via Gui#hud). Both the toggle on/off message and the stability warning now go through client.gui.hud instead of client.gui directly. This was the only breaking change in the port - everything else (the crash mixin, firework boost scaling, damage types, the gamerule, networking) carried over unchanged.
• The client and server startup warning now includes a ⚠️ emoji: "⚠️ Warning: this mod is very buggy with high ping on servers with low memory when flying into ungenerated chunks." Shown once per join in chat (client) and logged once on server start (server console).

1.1.0

Changed

• Propulsion is now firework-driven, not hold-to-boost. Speed no longer builds from just holding right-click - you glide, then actively fire fireworks for propulsion, same as vanilla. The only difference is what those fireworks do.
• Each firework fired pushes exponentially harder than the last, with no cap. Vanilla's firework boost always converges toward the same flat target speed no matter how many you use in a row; that target now compounds per use instead, permanently removing the ceiling.
• Boost only applies while the toggle is on, you're gliding, and a firework rocket is your currently selected item - so it never fires accidentally.
• The mod now has its own toggle keybind (Options > Controls > Key Binds > Particle Accelerator, unbound by default) instead of being tied to holding right-click. Pressing it shows an on-screen message in the same style as Do a Barrel Roll's toggle notification: "ON" in green, "OFF" in red.
• The toggle now starts on by default, your last choice is saved locally and restored on next launch, and it automatically turns off when you die so you never respawn mid-boost.
• Renamed the mod (and its display name) to particleaccel, matching the built jar's file name.

Fixed

• Boost was invisible on your own screen right before an unexplained death. The firework's boost math runs independently on both the client and the server (each side ticks its own copy of the attached firework entity); the scaling only matched the server's player type, so your own client kept rendering the unboosted vanilla speed while the server's real, authoritative copy applied the full scaled speed and collided with the world at that true velocity. Fixed by matching both sides consistently, so what you see now matches what actually happens.
• A firework used after coasting for a while no longer snaps you back to your old peak speed for free. The per-firework boost level now decays on its own after about a second of not firing fireworks, so slowing down by letting off the fireworks actually costs you something, and the next firework gives a boost sized to your current state rather than instantly restoring your highest speed ever reached this flight.
• High-speed wall impacts could go completely undetected, tunneling straight through obstacles without taking damage or dying, because vanilla resolves an entire tick's movement in one collision check - which can skip past a wall entirely once your per-tick movement distance exceeds it. Movement at high speed is now resolved in bounded shorter steps so a collision is always caught the moment it happens, however fast you're going.
• Removed an earlier attempt at detecting vertical (ceiling/floor) impacts for the death message: it reused vanilla's horizontal wall-crash threshold, which is tuned for a case (mid-air, unobstructed horizontal flight) where that much sudden deceleration only happens on a real collision. Applied to the vertical axis it also fires on completely ordinary jumping and landing, since gravity itself causes comparable deceleration on every normal landing. Reverted to horizontal-only detection rather than ship false-positive fall damage on routine jumps.

Added

• Custom death message when a wall impact kills you while particle accelerated:

  <Player> was turned into a pancake whilst being particle accelerated

  Non-boosted elytra crashes still show vanilla's normal message.

1.0.0

Initial release.

• Elytra speed exponentially increases while holding right-click and gliding, with no cap.
• Vanilla's elytra_movement_check game rule is automatically disabled on server start, so the "moved too quickly" anti-cheat correction doesn't undo the speed gained.
• Death message on high-speed wall impact, reusing vanilla's existing fall-flying collision damage.
• No special integration needed for Do a Barrel Roll compatibility - it only touches camera/rotation rendering, never flight physics, so there's no overlap with anything this mod does.