create_submarine-2.1.4.jar

[June 6, 2026] - Cookiecutter Sharks, Naval Mines, Steel Cable Power & Propellers

New Blocks & Features

• Cookiecutter Shark: Added a new deep-sea predator with its own model, swim/idle animations and a latch-and-struggle attack behavior.
• Underwater Mines: Added deployable naval mines that float to hold their depth, arm when a ship or creature gets close, and detonate with a large underwater shockwave — camera shake, launched debris, and area damage.
• Submarine Propeller: Added a submarine propeller block with configurable power, client-side bubble/particle wake, and dedicated rendering.
• Steel Cables & Electrification: Added steel cable visuals (connector and winch variants, ponder scenes) and a cable electrification system that carries energy along cables, throws sparks, and shocks entities touching a live line.
• Amphistium: Added the Amphistium, a glowing schooling fish that spawns in the Abyss biome.

Configuration & User Interface

• Update Notifications: Added an in-game update checker that queries Modrinth and shows a screen when a newer Deep Seas version is available, with the changelog and an "ignore this version" option.
• Lithostitched Reminder: Added a startup screen that prompts you to install the recommended Lithostitched dependency when it is missing.
• Item Tooltips: Mines, propellers and floaters now show descriptive tooltips.

Bug Fixes

• Mines no longer detonate on their own wreckage: Fixed mines randomly exploding while you broke blocks off them to make them resurface. Each detached chunk becomes a brand-new sublevel spawned right next to the mine, which the proximity trigger mistook for an approaching ship. Debris now inherits the mine's owner at the exact moment of the split and is ignored by the trigger, while real ships still set the mine off.
• Mines no longer punch holes in the ocean: Fixed mine explosions spawning their flying-block debris in a way that silently replaced the block at the target world position, carving air pockets into the surrounding water and terrain. Debris is now thrown without ever touching the parent world.
• Mine depth-keeping no longer lags the server: Replaced the once-per-second full-volume scan each mine ran (to share buoyancy between mines) with live O(1) tracking, preventing TPS drops on large hulls.
• Cable energy network spam: Throttled the block-update packets sent while energy flows through cables (roughly twice a second instead of every tick) to stop network lag.
• Update checker visibility: Marked the update-check result fields volatile so the render thread reliably sees the values fetched on the background network thread.
• Corrupt client state file: Loading an empty or corrupt create_submarine_client_state.json no longer throws — it now falls back to defaults.
• Sturdier cable collisions: Hardened cable-versus-player collision (sublevel and parent-level handling, null rope-manager guards) and made the winch energy store thread-safe.
• Pulley concurrency & speed: Clamped pulley slide speed to a configurable maximum and deferred block destruction/particles to the server tick to avoid concurrency crashes.
• Fog submersion detection: Reworked the underwater fog check to skip occluded positions and confirm actual water, fixing incorrect fog states.
• Reduced particle spam: Lowered ballast-vent and water-thruster particle counts and frequency.
• Double-unregister guard: Submarine state is now only cleared once the driver claim is actually released, preventing double-unregister glitches when several control blocks are present.

Under the Hood

• Submarine Driver Registry: Added a registry that grants a single exclusive "driver" block per submarine (hull controller / oxygen diffuser) using priorities and stale-claim eviction.
• Mine float guard: A mine bolted onto a contraption larger than 5 blocks no longer acts as a ballast/floater.
• Pressure membership helper: Centralized the "is this position part of the ship" check (isWithinShip) used by the pressure system.
• Hull scan budgeting: Added dynamic scan delay/budget logic to the hull controller to spread out leak scanning.
• Access transformer: Added an access transformer so falling-block debris can be spawned without destructive world side effects.

Localization

• Translations: Updated Simplified Chinese (zh_cn) and Russian (ru_ru) translations.

create_submarine-2.1.3.jar

Changelog

[May 30, 2026] - Persistent Lianas, Fruit Reattachment & Configurable Oceans

Bug Fixes

• Lianas Surviving Reload: Fixed creepvines breaking apart and floating to the surface after leaving and rejoining a world. Their topology (which segment anchors to the seabed, parent/child links, attached fruits) was never actually persisted — the spawn-time block-entity lookup silently failed, so nothing survived a reload. The full chain layout is now saved to a dedicated registry and every physics joint is rebuilt deterministically on load.
• No More Self-Fighting Lianas: Fixed lianas jittering, folding and collapsing when bumped into after a reload. Each stacked liana block was running its own physics and stacking buoyancy/player forces several times over; only the segment's centre block now drives the simulation.
• Fruits Staying Attached: Fixed creepvine fruits randomly dropping off on reload depending on chunk load order. Each fruit's rest position is now remembered and the fruit is snapped back into place before its joint is rebuilt, so it always reattaches where it belongs.

Configuration & User Interface

• Configurable Ocean Depth: The Deeper Oceans feature is no longer locked to a fixed 10 blocks — a new deeperOceansDepth option (default 10, up to 256) lets you choose how far below vanilla the sea floor sits, with an in-config warning that large values can badly hurt world-generation and rendering performance.
• Deep Seas Welcome Screen: Added a one-time welcome screen shown in front of the main menu, recommending you set up your Deep Seas preferences before diving in. It offers a button straight to the mod configuration and a "maybe later" button; either choice is remembered in the config TOML so it never shows again.

Under the Hood

• Reusable Plant Persistence: Generalized the liana save system into a plant-agnostic PlantPhysicsRegistry that will back future physical plants, made it the single source of truth for segment topology, and dropped the redundant (and unreliable) block-entity NBT copy.

[May 29, 2026] - Abyss Dimension, Physical Lianas & Big Optimizations

New Blocks & Features

• Abyss Dimension: Reintroduced the custom deep-ocean Abyss dimension with dedicated biome configs and custom worldgen.
• Physical Lianas & Seeds: Added creepvines (submarine lianas) and creepvine seeds that grow, flow with water currents, and simulate realistic physics inside sublevels.
• PDA & Sound Effects: Added a custom PDA menu overlay and registered new ambient/warning audio cues for Leviathans (roars and class detection warnings).
• New Diagnostics Command: Added the /submarine info command to inspect current hull integrity, depth, crack counts, and whether your sub is hermetically sealed or breached.
• Spawning Command: Added /submarineliana spawnradius to spawn creepvines inside a radius with custom density/probabilities.
• Client RAM Boost: Allocated 20 GB of RAM for the game client config to handle large sublevel structures smoothly.

Performance & Optimizations

• Global LOD System: Added a new LOD Optimizer (LianaLODOptimizer) that automatically pauses/freezes physics and ticking on distant creepvines to save CPU/FPS.
• Spawning Queue: Spawning multiple lianas in a radius is now staggered (closest to the player first) and freezes other lianas during creation to prevent lag spikes.

Bug Fixes

• Liana Sublevel Lighting: Fixed an issue where lianas in Sable sublevels rendered pitch black. They now dynamically fetch and reflect the real-world block light values (torches, glowstones, shaders) around them.
• Precise Pressure Calculations: Completely reworked pressure depth logic to measure depth block-by-block relative to the actual water surface rather than checking the center of the sub globally.
• Sinking & Crash Handling: Added a limit to how many blocks can implode at once to prevent audio/particle lag spikes, and ensured oxygen/life-support blocks are immediately destroyed when a sub sinks.
• Stability Fixes: Resolved rare NullPointerException and chunk-loading issues in the leak/compartment scanner, and fixed a concurrency deadlock in the Sable snapshot queue.

create_submarine-2.0.3.jar

• I'll be generating changelogs for future releases using an automated system.