KatamariIO 1.2.0 — Changes since 1.0.1

For Minecraft 1.21.1 (Fabric, Forge and NeoForge).

Added

• Entity attachment: the katamari can pick up living entities smaller than the ball. Attached entities move and rotate with its surface.
• Controls for entity attachment, including size filtering and a maximum attachment count. The default maximum is now unlimited.
• Optional attachment between katamari balls. Only a larger ball can attach a smaller one.
• An attachWhileRiding option to control whether blocks and entities can be collected while riding a vehicle or another entity.
• /katamari resetEntities to release attached entities without clearing collected blocks, and /katamari resetAll to reset blocks, entities, and ball size together.
• A reorganized /katamari config command for persistent settings, modes, presets, attachment options, and filters. Commands can also display their current values.
• English and Japanese translations for commands, help text, and status messages.
• Block breaking and interaction reach that scales with ball size.

Changed

• Replaced the latitude/longitude collision grid with a Fibonacci sphere grid for more even collision coverage. The number of collision bins is configurable.
• Improved collision and movement behavior as the ball grows, including step height, fall damage, and knockback handling.
• Released entities are moved outside the ball and cannot be attached again for three seconds.

Performance

• Added delta synchronization for collected blocks, with periodic full synchronization.
• Reworked collected-block storage and NBT serialization to reduce data size.
• Added pruning of hidden inner blocks and cached mesh rendering for collected blocks.
• Reduced collision work and limited how many blocks can be collected per tick.

Fixed

• Fixed repeated block pickups forming protrusions far beyond the ball's collision boundary. Attached blocks and entities now stay aligned with the collision sphere.
• Fixed gaps and incorrect collision growth when attaching thin or partial blocks such as snow layers, carpets, and slabs.
• Fixed stuttering and speed loss while rolling over water, improved travel across flowing water, and corrected swimming, diving, and surfacing controls.
• Fixed the ball rolling in the wrong direction from some third-person and spectator camera angles.
• Fixed attached entities appearing at different positions for the host player and other players. Their position and rotation now synchronize with the ball.
• Fixed camera shaking and passenger position jitter while riding a katamari, as well as block jitter during boat and vehicle turns.
• Fixed passenger relationships remaining after disconnecting, dying, or changing dimensions.
• Fixed sneaking causing an unintended dismount and immediate reattachment loop.