Changelog

Version: 0.2.22
Date: 2026-04-04
  Changes:
    - Added German, French, and Italian locale files.
    - Bumped the mod version for the updated translation package.

Version: 0.2.19
Date: 2026-04-04
  Bugfixes:
    - Fixed Seismic Bomb fuse handling so placed bombs now detonate reliably after 3 seconds instead of sometimes remaining inert.
    - Added an explicit in-world explosion effect when a Seismic Bomb finishes its fuse.

Version: 0.2.18
Date: 2026-04-04
  Changes:
    - Moved all custom items into the production panel.
    - Added an early-game Seismic Bomb crafted from coal, wood, and stone.
    - Seismic Bombs can be placed on the ground, explode after 3 seconds, and reveal hidden deposits within 20 tiles.
    - Updated the mod description, locale help text, and Informatron pages to cover the new early seismic option.

Version: 0.2.17
Date: 2026-04-04
  Changes:
    - Added a clearer mod description, separate in-game instructions for Probe Drill and Seismic surveying, and Informatron documentation pages.

Version: 0.2.16
Date: 2026-04-04
  Changes:
    - Extended hidden deposit support to fluid resources such as crude oil, so they now follow the same discovery flow as solid ores.

Version: 0.2.15
Date: 2026-04-04
  Changes:
    - Probe Drill now reveals only a small local fragment of a deposit around the bore site instead of exposing the whole patch at once.

Version: 0.2.14
Date: 2026-04-04
  Bugfixes:
    - Restored underground deposit generation by letting normal resources spawn first and immediately hiding them in runtime on init and on newly generated chunks.
    - Increased `/ur-debug-outline` search radius to 300 tiles.

Version: 0.2.13
Date: 2026-04-04
  Changes:
    - Removed the Underground Mine entirely from normal gameplay and automatically deletes leftover legacy instances on load or upgrade.
    - Added the `/ur-debug-outline` chat command to reveal and draw a debug outline of the nearest resource patch on the map.

Version: 0.2.12
Date: 2026-04-04
  Changes:
    - Solid ores now generate as truly hidden underground deposits and can no longer be selected before discovery.
    - Probe Drills now reveal real native resource patches, enabling normal mining drills only after discovery.
    - Seismic Shells now reveal 50% of each struck deposit per impact instead of only adding a small abstract progress increment.
    - Underground Mine progression has been removed from normal play; the legacy building only works on already discovered deposits.

Version: 0.2.11
Date: 2026-04-04
  Changes:
    - Probe Drill once again reports scan results in chat, including detected resource types, richness, direction, and distance.
    - Seismic impacts now also report their outcome in chat, including when no underground anomalies were found.

Version: 0.2.10
Date: 2026-04-04
  Changes:
    - Probe Drill recipe is now available from the start of the game instead of being locked behind research.

Version: 0.2.9
Date: 2026-04-04
  Changes:
    - Hidden underground resources are now also hidden by default on the map/minimap, not only in the world view.

Version: 0.2.8
Date: 2026-04-04
  Changes:
    - Seismic Station is now a passive measurement building and no longer acts as a firing artillery turret.
    - Seismic Shells are intended to be fired from native artillery turrets.

Version: 0.2.7
Date: 2026-04-04
  Changes:
    - Seismic Station now uses `graphics/seismic.png` as its in-world base graphic.

Version: 0.2.6
Date: 2026-04-04
  Bugfixes:
    - Removed invalid runtime access to `LuaPrototypes.animation` during resource catalog rebuilds.

Version: 0.2.5
Date: 2026-04-04
  Features:
    - Probe and seismic discoveries now render ore visuals directly in the game world instead of using map tags.
  Bugfixes:
    - Restricted discovery rendering to resources with prepared visual animation prototypes to avoid runtime issues with unsupported ores.

Version: 0.2.4
Date: 2026-04-04
  Features:
    - Probe Drill discoveries are now shown directly on the game map instead of being reported in chat.
    - Seismic discoveries now create and update resource map tags instead of drawing circle overlays in the world.

Version: 0.2.3
Date: 2026-04-04
  Bugfixes:
    - Fixed seismic discovery circle rendering for Factorio 2.0 by using the correct string render mode and force identifiers.

Version: 0.2.2
Date: 2026-04-04
  Features:
    - Probe Drills now take time to finish the bore instead of revealing results instantly.
    - Completed probe discoveries are now marked on the map for the owning force.

Version: 0.2.1
Date: 2026-04-04
  Bugfixes:
    - Replaced invalid `surface.create_entity{name = "flying-text"}` calls with player-local flying text to prevent runtime crashes on build events.

Version: 0.2.0
Date: 2026-04-04
  Features:
    - Hid solid underground resource entities and moved prospecting to place-anywhere probe drills and seismic survey overlays.
    - Added the Underground Mine, which extracts a real hidden deposit when placed on top of one and otherwise rotates trace ore output at 10x lower speed.
    - Added Polish locale strings for the new mining flow.
  Optimizations:
    - Replaced broad runtime resource handling with a cached supported-resource catalog and filtered scans.
    - Moved mine processing onto a batched `on_nth_tick` queue to keep extraction scalable with many placed mines.

Version: 0.1.2
Date: 2026-04-01
  Bugfixes:
    - Replaced transient text rendering with flying-text entities.
    - Removed persistent draw_text usage from discovery overlays to prevent runtime crashes.

Version: 0.1.1
Date: 2026-04-01
  Bugfixes:
    - Fixed Probe Drill prototype for Factorio 2.0 by setting required MiningDrillPrototype.vector_to_place_result.
    - Cleaned the mod archive to remove macOS metadata files.

Version: 0.1.0
Date: 2026-04-01
  Features:
    - Added Probe Drill for short-range resource probing.
    - Added Seismic Station and Seismic Shell for long-range survey shots.
    - Added force-specific, surface-specific seismic discovery overlays.
    - Added probe-drilling and seismic-survey technologies.