IslandGen

Island Improvements & Sub-Ocean Caves

New: Sub-Ocean Cave Systems

• Intricate HIDDEN worm-tunnel cave networks now generate beneath the ocean floor in all ocean biomes
• Caves feature ore-rich walls with depth-stratified deposits (coal → iron → gold → diamond/emerald deeper down), using deepslate variants at low Y levels
• Standard dungeon rooms spawn inside cave networks: mossy stone-brick shells, sea lantern lighting, cobwebs, iron bar entrances, a spawner (skeletons, cave spiders, zombies, silverfish), and a loot chest
• Rare boss chambers (~20% of dungeon spawns) feature large deepslate-brick rooms, glowstone ceilings, two harder spawners (Wither Skeletons, Witches, Guardians), and two rich loot chests — with a small chance of Elytra
• Toggle on/off via config: sub_ocean_caves_enabled

New: Ocean Barrel Spawn Config

• Barrels can now be fully disabled (barrel_spawn_enabled = false)
• Barrel count per spawn event is now configurable (barrel_count_min / barrel_count_max) — raise to increase ocean density, keep at 1/1 for default

Fix: Island Underwater Profile

• Islands no longer have a sheer vertical cliff wall below the waterline
• The underwater body now tapers naturally outward using a quadratic curve — shallow at the edges, full depth at the centre — giving a realistic reef/seamount silhouette