Changelog

Version: 1.0.32
Date: 2026-07-13
  Changes:
    - Patch release for the verified 1.0.31 build.

Version: 1.0.31
Date: 2026-07-13
  Changes:
    - Patch release for the current compact steel solar furnace visuals and stable 1.0.30 runtime behavior.

Version: 1.0.30
Date: 2026-07-12
  Changes:
    - Made the steel solar furnace sprite more compact inside its vanilla-sized footprint.
  Bugfixes:
    - Runtime control now throttles real furnace crafting progress to the displayed solar output without replacing entities.
    - At zero effective sunlight, furnaces keep their contents and progress instead of continuing to smelt.
    - Solar boilers have their energy drained at zero effective sunlight so they stop heating instead of producing full steam.

Version: 1.0.29
Date: 2026-07-12
  Bugfixes:
    - Kept hidden solar panels, but moved them back into an isolated helper network away from normal pole coverage.
    - Hidden helper poles now disconnect foreign neighbours before reconnecting their private solar pair.
    - Furnace grid top-up remains tied to normal electric-furnace coverage instead of hidden solar production.

Version: 1.0.28
Date: 2026-07-12
  Changes:
      - Hidden solar helpers now stay local and isolated instead of connecting through long invisible wires.
      - Furnace status now counts grid top-up only when the furnace itself is covered by a real electric pole or substation.
      - Solar boiler status no longer applies grid top-up; its displayed steam output follows sunlight only.
  Bugfixes:
    - Kept hidden solar helper power isolated from the normal electric grid.

Version: 1.0.27
Date: 2026-07-12
  Changes:
    - Hidden solar panels now feed their machine through an invisible isolated helper network, keeping solar power out of the normal grid.
    - Normal electric networks can only top up a solar machine when a real pole or substation covers the machine itself.
  Bugfixes:
    - Kept the status update from 1.0.26: when grid power tops up missing sunlight, the live status shows the actual base output.

Version: 1.0.26
Date: 2026-07-12
  Changes:
    - Live status now shows effective base output when the normal electric grid tops up missing sunlight.
    - Solar helpers are rediscovered after surface changes and periodic player-surface scans, keeping the indicator fresh after warp.
  Bugfixes:
    - Moved hidden solar sources away from the machine tile and isolated their helper poles, so hidden panel output does not leak into the normal grid.

Version: 1.0.25
Date: 2026-07-12
  Changes:
    - Visible solar furnace and boiler prototypes now use their 100% base performance, so Factorio's standard production-speed lines show the base values.
    - Sunlight above 100% no longer increases smelting speed or steam output; the live status still shows current sunlight and capped effective output.
    - Removed the added base-value text from entity and item descriptions.

Version: 1.0.24
Date: 2026-07-12
  Changes:
    - Added base reference values to solar furnace and boiler descriptions: furnace base speeds 1/2 and boiler base steam output 60/s.
    - Kept the live status as the source for current sunlight-adjusted speed and steam output.

Version: 1.0.23
Date: 2026-07-12
  Changes:
    - Added a live custom status for solar furnaces and the solar boiler showing current sunlight, effective smelting speed, and steam output.
  Bugfixes:
    - Kept solar machines fully static at runtime; status updates do not replace entities or touch inventories, fluids, or crafting progress.

Version: 1.0.22
Date: 2026-07-12
  Changes:
    - Solar furnaces and boilers no longer replace their runtime entity during sunlight recalculation.
    - Visible machines now use the 300% internal variant and are throttled by their own hidden solar panel, so power scales continuously from 0% to 300%.
  Bugfixes:
    - Fixed resource, fluid, and crafting-progress loss during warp or surface sunlight changes.
    - Kept all old hidden sunlight variants available for existing saves.

Version: 1.0.21
Date: 2026-07-11
  Changes:
    - Solar output now follows the Factorio daylight curve directly: night is 0%, dawn and dusk ramp smoothly, and daytime is 100%.
    - Removed the 50% night floor; the engine-required zero variant is now only a tiny unloaded placeholder and receives no solar power at night.

Version: 1.0.20
Date: 2026-07-11
  Changes:
    - Solar machines now use hidden solar-panel prototypes, so real Factorio solar efficiency drives their power.
    - Hidden power poles now only cover their own machine instead of nearby machines.
  Bugfixes:
    - Fixed nearby solar furnaces and boilers borrowing the wrong hidden power network.
    - Filled machines now preserve inventories, fluids, and crafting progress while changing sunlight variants.

Version: 1.0.19
Date: 2026-07-11
  Bugfixes:
    - Fixed solar furnace and boiler prototypes showing maximum 300% productivity at every sunlight level.
    - Empty machines may now switch to the matching sunlight variant, while filled machines keep their contents untouched.

Version: 1.0.18
Date: 2026-07-11
  Changes:
    - Reworked sunlight recalculation to adjust only hidden electric power instead of replacing solar machines.
    - Solar power is now linear: 100% sunlight gives 100% nominal power, up to 300% at high-sun surfaces.
  Bugfixes:
    - Fixed resource loss in solar furnaces during low-sun and warp-like sunlight updates.
    - Fixed water loss in solar boilers during sunlight recalculation.
    - Kept old hidden sunlight variants as stable electric aliases for existing saves.

Version: 1.0.17
Date: 2026-07-11
  Bugfixes:
    - Fixed a syntax error in control.lua while cleaning hidden solar helper entities during rescan.

Version: 1.0.16
Date: 2026-07-11
  Bugfixes:
    - Fixed the hidden local electric pole prototype so the electric solar-machine backend loads correctly.

Version: 1.0.15
Date: 2026-07-11
  Changes:
    - Reworked solar furnaces and the solar boiler to use electric-style energy instead of hidden burner fuel.
    - Removed the visible fuel inventory and fuel bar from solar machines.
    - Added hidden local solar power helpers so machines work from sunlight without an external power grid.
  Bugfixes:
    - Solar machines now resume work when sunlight returns.
    - Added runtime checks for resource preservation through darkness and resumed smelting after sunlight returns.

Version: 1.0.14
Date: 2026-07-11
  Bugfixes:
    - Solar furnaces no longer swap internal entities while resources or modules are inside, preventing ore and plates from being lost during sunlight changes.
    - Solar furnaces now use controlled solar burner energy without inserting hidden fuel items into the machine inventory.
    - Added regression checks for stalled solar furnace resource preservation.

Version: 1.0.13
Date: 2026-07-11
  Bugfixes:
    - Fixed a runtime crash while solar machines changed internal sunlight variants.
    - Solar boilers and furnace variants can now be picked with the pipette as their visible item.
    - Solar machines no longer swap internal variants while their GUI is open.
    - Tightened north and south solar boiler sprites to better match the vanilla boiler footprint.
    - Rewrote Russian metadata and locale as clean UTF-8 text.

Version: 1.0.12
Date: 2026-07-11
  Bugfixes:
    - Fixed a crash during configuration changes when solar furnace variants without fluid boxes were rescaled.

Version: 1.0.11
Date: 2026-07-11
  Changes:
    - Replaced solar boiler sprites with redrawn N/E/S/W graphics without protruding pipe mouths.
    - Removed the hidden burner-fuel system from solar machines; boilers no longer show fuel combustion UI.
    - Solar furnace speed and solar boiler steam output now scale with current sunlight below 100%.
    - High-sun surfaces still boost output smoothly up to x3 at 600% solar power.

Version: 1.0.10
Date: 2026-07-11
  Changes:
    - Removed visible side pipe protrusions from solar boiler sprites in all directions while keeping standard pipe connections.
    - Replaced the hidden solar heat fuel icon with a blank icon so only the machine status/fuel indicator remains visible.

Version: 1.0.9
Date: 2026-07-11
  Changes:
    - Shortened the east and west solar boiler side outlet graphics so adjacent boilers read more compactly.
    - Removed solar panels from the solar boiler recipe and added stone, copper cable, and coal costs.
    - Updated solar furnace recipes with stone, copper cable, and coal costs.
    - Solar boiler unlock now follows the vanilla boiler recipe unlock when another mod moves it to technology.

Version: 1.0.8
Date: 2026-07-11
  Changes:
    - Added separate N/E/S/W solar boiler sprites.
    - Redrew boiler pipe openings to match the standard boiler layout more clearly.
    - Removed the small extra protruding pipe from the boiler graphics.

Version: 1.0.7
Date: 2026-07-11
  Features:
    - Added a solar boiler with standard boiler water and steam pipe connections.
    - Added generated solar boiler graphics and icon with front-center steam outlet.
    - Solar furnaces and the solar boiler now use hidden internal solar heat and stop without sunlight.
  Changes:
    - Removed obsolete runtime speed settings and unsafe runtime crafting-speed writes.
    - Restored surface effects for solar furnaces so surface modifiers can affect smelting naturally.

Version: 1.0.6
Date: 2026-07-10
  Bugfixes:
    - Fixed solar indicator cleanup on entity destruction for Factorio 2.1 rendering API.
    - Made rendering cleanup tolerant of older saved render references.
    - Verified solar furnace tracking on Space Age platform surfaces.

Version: 1.0.5
Date: 2026-07-10
  Changes:
    - Split furnace graphics into idle body, working smelting glow, and sunlight indicator glow.
    - Smelting chamber glow now appears only while the furnace is working.
    - Small indicator bars now glow only while the furnace has sunlight.
    - Solar furnaces now emit 10 times less pollution than their vanilla furnace counterparts.

Version: 1.0.4
Date: 2026-07-10
  Changes:
    - Replaced furnace entity graphics with generated solar furnace sprites.
    - Redrew furnace icons from the same models with transparent vanilla-style backgrounds.
    - Kept collision and selection boxes identical to the vanilla stone and steel furnaces.

Version: 1.0.3
Date: 2026-07-10
  Changes:
    - Added mod thumbnail image for the mod portal and mod list.

Version: 1.0.2
Date: 2026-07-10
  Changes:
    - Redrew furnace icons: removed large sun overlay and moved the solar panel marker to the corner.

Version: 1.0.1
Date: 2026-07-10
  Bugfixes:
    - Removed runtime write to read-only LuaEntity.active when solar furnaces are built.

Version: 1.0.0
Date: 2026-07-10
  Features:
    - Added basic and steel solar furnaces.
    - Steel solar furnace unlocks together with steel furnace research.
    - Solar furnace speed follows daylight and surface solar power.
    - At 600% solar power the speed multiplier is capped at x3 instead of x6.
    - Added runtime settings for night speed and solar boost scaling.
    - Added Russian and English locale.