Changelog

Version: 0.13.0
Date: 2026-09-18
  Changes:
    - Migrated to Factorio 2.1: factorio_version and base dependency now
      target 2.1 (API 2.1.19); no runtime or prototype API changes required
    - Dependency floors raised to the 2.1-targeted releases: gear-girl
      >= 1.2.0, particle-trails >= 0.5.0, status-effect-hud >= 0.5.0
  Bugfixes:
    - Fixed Factorio 2.1 load failure ("category and additional_categories
      got merged into categories table"): all recipes now use
      categories = { "chemistry" } / { "crafting" } instead of the removed
      single-string category field

Version: 0.12.1
Date: 2026-09-10
  Changes:
    - Internal refactor: HUD integration extracted to hud.lua, character
      inventory/equipment save/restore extracted into reusable helpers,
      ester prototype generation split into ester-builders.lua and
      ester-descriptions.lua (no behavior changes)
  Balancing:
    - Phytosterol Extraction craft time reduced 5s -> 2s
    - Microbial Degradation craft time reduced 5s -> 4s

Version: 0.12.0
Date: 2026-09-10
  Features:
    - Hormone Optimization duration/cooldown now scale with diminishing returns: near +5% duration / -5% cooldown per early level, converging to double duration and 15% of base cooldown; +1% permanent speed per level is unchanged
    - Status-effect-hud rows now show the hormone science icon normally, switch to a yellow warning past the warning multiplier, and flash red/yellow past 95% elapsed (cooldown row is always yellow)
    - Icon blinking is now delegated to the status-effect-hud generic alt_icon flash (requires status-effect-hud 0.4.0+); also fixes the invalid red-icon sprite path (bare sprite-prototype name instead of mod/name) that left rows on their fallback icon
    - Yellow warning and critical flash windows now have guaranteed minimum lengths on short doses: hormones row at least 30s yellow / 15s flashing, effects row at least 15s yellow / 5s flashing
  Bugfixes:
    - Fixed levels/effects HUD never turning red at warning time (both branches returned the amber icon)
    - Fixed levels HUD stuck on yellow with no science period: elapsed fraction now uses the total persisted with the winning reversion deadline instead of recomputing from a single dose (max()-accumulated deadlines can never match that recompute)

Version: 0.11.3
Date: 2026-09-09
  Features:
    - Character transformation is now a hard dependency on gear-girl + skins-factored (no optional toggle)

Version: 0.11.2
Date: 2026-09-09
  Changes:
    - Dose kit descriptions now show "Cooldown time is..." and "Provides elevated estrogen levels for..."
    - Added levels duration to dose kit descriptions

Version: 0.11.1
Date: 2026-09-09
  Changes:
    - Cypionate ester duration rebalanced from 150s to 180s for more uniform progression (1/2/3/5 minutes)
    - Castor oil carrier now has half speed boost but 25% longer effect time and 10% longer levels time
    - HUD levels tooltip now dynamically shows total reversion duration

Version: 0.11.0
Date: 2026-09-09
  Features:
    - Added status-effect-hud integration for HRT timers (levels, effects, cooldown)
    - Added first-load welcome message for new players
    - Added automated in-game test framework to estrogen-mod-testing
  Changes:
    - Hormone coverage now uses deadline-based max() logic to prevent timer reduction on re-dosing
    - Updated mod menu settings: consistency warning multiplier 0.1-1 (default 0.85), reversion multiplier default 10, cooldown multiplier multiplied against effect length
  Bugfixes:
    - Fixed cooldown enforcement to prevent re-dosing before cooldown expires (item is refunded)
    - Fixed flying text locale keys to use section-qualified format
    - Removed dead migration code and stale comments

Version: 0.10.1
Date: 2026-09-07
  Bugfixes:
    - Fixed armor, guns, ammo and trash disappearing when the character transforms (the fallback swap now copies every character inventory slot, and equipment charge survives the swap)

Version: 0.10.0
Date: 2026-09-07
  Features:
    - Dose kit descriptions are now dynamic: tooltips show the actual heal, speed boost, effect duration and cooldown computed from the current mod settings
  Changes:
    - Run-trail particles moved into the new standalone Particle Trails companion mod; Estrogen Mod now requires it and asks it to show the trans trail while a dose boost is active
    - Trail particles now render behind the player character and kick up behind the feet relative to the movement direction

Version: 0.9.3
Date: 2026-09-07
  Features:
    - Added pink, blue and white run-trail particles that kick up from the player's feet while walking during an active HRT dose boost
  Changes:
    - Recipe balancing changes

Version: 0.9.2
Date: 2026-09-07
  Changes:
    - Removed new girl character port dependency

Version: 0.9.1
Date: 2026-09-07
  Bugfixes:
    - Fixed character transformation wiping entire player inventory (fallback swap now preserves inventory, cursor stack, and equipment grid)
    - Fixed consistency warning/reversion multipliers now using actual dose duration instead of hardcoded baseline
    - Fixed reversion not allowing re-transformation with additional doses
  Features:
    - Added 10% permanent speed increase when using girl character model
    - Added auto-retransform after reversion when taking additional doses
    - Added error logging for character mod API failures
  Changes:
    - Removed hormone cooldown workaround to work like base game fish
    - Prevented instant window close in run_tests.py for manual testing

Version: 0.9.0
Date: 2026-09-07
  Features:
    - Added character transformation system: player character changes to female model after taking HRT doses
    - Added support for skins-factored + gear-girl OR CharacterModHelper + NewGirlCharacter (mutually exclusive)
    - Character transformation persists across game reloads
    - Added dosing consistency system: warning after 17x dose timer, reversion after 20x dose timer
    - Added startup setting to enable/disable character transformation
    - Added startup setting to configure dose threshold for transformation (adjustable 1-100)
    - Added startup setting to configure consistency warning multiplier (adjustable 2-100)
    - Added startup setting to configure consistency reversion multiplier (adjustable 3-100)
    - Added per-player setting to toggle between male/female character after transformation is unlocked
  Changes:
    - Updated dependencies to include optional character mod support
    - Added validation to prevent loading when both character mod systems are installed

Version: 0.8.1
Date: 2026-09-06
  Bugfixes:
    - Fixed a crash when loading alongside mods that set include_all_base_lab_science on labs (e.g. Corrundum Pressure Lab). estrogen-mod now skips injecting hormone-science-pack into such labs, which inherit it automatically from the base lab.

Version: 0.8.0
Date: 2026-09-06
  Features:
    - Added Hormone Optimization, an infinite technology after Ester Undecylate costing Hormone Science and Chemical Science packs. Each level reduces dosing cooldown by 5% (to a minimum of 25%), extends dose duration by 5%, and permanently increases running speed by 1%.

Version: 0.7.3
Date: 2026-09-06
  Bugfixes:
    - The HRT Production tab icon now declares its two packed mipmap levels (icon_mipmaps = 2) so the game uses the full 192x128 strip instead of reading only the base image.

Version: 0.7.2
Date: 2026-09-06
  Changes:
    - Converted changelog.txt to the official Factorio changelog format so it renders in the in-game mod browser: colon after every Version line, a 99-dash separator opening every section (including the first), and no blank lines between a separator and its version line. No functional changes.

Version: 0.7.1
Date: 2026-09-06
  Balancing:
    - Hormone Science MCT oil requirements now scale with the number of packs a recipe produces, then doubled: Valerate 100, Enanthate 200, Cypionate 400, Undecylate 800 (a flat 100 oil per pack).
  Features:
    - Alternate Hormone Science recipes using Castor Oil vials and castor-oil analog added for all four esters, unlocked alongside their MCT counterparts at the same oil-per-pack cost.

Version: 0.7.0
Date: 2026-09-06
  Features:
    - The complete estrogen research tree is now in effect: Pharmaceutical Packaging anchors the medical line after Advanced Material Processing 2, and each ester technology unlocks its full production chain plus its Hormone Science recipe — Ester Valerate first, then Enanthate, Cypionate and Undecylate, all but the first requiring Hormone Science packs to research.
    - Hormone Science research folded into the ester technologies: researching an ester now unlocks both its production chain and its Hormone Science recipe. Only Ester Valerate can be researched without Hormone Science packs; Enanthate, Cypionate and Undecylate all consume them (research costs 500 / 1200 / 3000 of chemical + hormone science packs).
  Changes:
    - Pharmaceutical Compounding renamed to Pharmaceutical Packaging and re-anchored after Advanced Material Processing 2; prerequisites are now Advanced Material Processing 2, Plastics and Organic Esters & Solvents (which supplies the isopropyl alcohol the packaging line needs).
    - Valerate compounding (vial and dose-kit recipes) moved from Pharmaceutical Packaging into Ester Valerate, which now requires Pharmaceutical Packaging.
    - Ester science recipes renamed to include Compounding & Packaging (e.g. "Valerate Hormone Science Compounding & Packaging").

Version: 0.6.3
Date: 2026-09-06
  Features:
    - Valerate is now the first ester the player unlocks: the entry esterification tech is renamed Ester Valerate, and the enanthate chain moved to its own Ester Enanthate technology (after Pharmaceutical Compounding).
  Changes:
    - Enanthate is now generated by the shared ester family generator (prototypes/esters.lua) instead of hand-written recipes; its recipe names follow the family convention (heptanoyl-chloride-formation, enanthate-diester-formation, enanthate-selective-hydrolysis, methyl-enanthate-cracking, enanthate-recrystallization, enanthate-* compounding).
    - Compounding recipe names normalized for every ester: mct-<ester>-vial-compounding -> <ester>-mct-vial-compounding (and the castor/dose-kit variants), matching the diester/intermediate naming.

Version: 0.6.2
Date: 2026-09-06
  Changes:
    - Moved item and technology badges from bottom-right to bottom-left to avoid overlapping Factorio's stack-size badge. Fluid badges stay bottom-right (fluids have no stack badge).

Version: 0.6.1
Date: 2026-09-06
  Changes:
    - Version bump only (no functional changes).

Version: 0.6.0
Date: 2026-09-06
  Features:
    - Three new estradiol esters alongside enanthate: Valerate (C5, short-acting), Cypionate (ring-structured C8, rides slightly longer than enanthate) and Undecylate (C11, ultra-long castor depot).
    - Every new ester is compounded into MCT Oil and Castor Oil vials and dose kits (6 new dose variants), following the existing carrier tradeoff: MCT heals 100 with the full-strength speed boost, castor heals 200 at half strength for half the time.
    - The ester sets the buff clock at full strength: valerate 60 s, enanthate 120 s, cypionate 150 s, undecylate 300 s.
    - New reagents: valeric, cypionic, undecylenic and undecylic acids, their acyl chlorides, and methyl ester byproducts that crack back into methanol plus the parent acid, mirroring the enanthate recycle loop.
    - Undecylic acid starts from a realistic castor oil pyrolysis route (ricinoleic split into undecylenic acid, then hydrogenation).
    - Three new technologies replacing the old Ester Diversification: Ester Valerate, Ester Cypionate, and Ester Undecylate — players progress linearly through valerate → cypionate → undecylate.
    - Icon scheme: shared artwork keeps its natural colour (all these esters and fatty reagents are white or colorless in reality) and is differentiated by a small bottom-right badge — a single ester letter (E/V/C/U) on the estradiol esters, carbon-count shorthand on the fatty reagents (C5/C7/C8/C11/C11:1 acids, C#Cl acyl chlorides, C#Me methyl esters) and on the three new tech icons (V, C, U). Generated by tools/icon maker/ester-badges.py.
  Changes:
    - Fixed "Estradiol Ethanate" typos in the four compounding/kit recipe names (now "Estradiol Enanthate").
    - Every item, fluid and capsule now references its own icon file: shared vial, dose kit and methyl-ester artwork was copied to per-prototype files (e.g. estradiol-enanthate-vial-mct-oil.png) so each can be edited independently.
    - Added tools/validate.py: executes the whole data stage in a headless Lua VM and cross-checks recipes, unlocks, icons and locale in both yield profiles.

Version: 0.5.0
Date: 2026-09-06
  Features:
    - New startup setting "Realistic Crafting Ratios (Extra Harsh)": opt-in yields anchored tighter to real-world chemistry, about 3.5x more raw materials per dose than the forgiving default (leaner sterol extraction, weaker fermentation conversion, 60% recrystallization recovery). Requires a restart when changed.
  Changes:
    - The mod is now licensed under the GNU General Public License v3.0 (see the LICENSE file).
    - Tech tree reworked: the estrogen branch now grows directly out of Chemical Science Pack (dropped the Advanced Material Processing 2, Oil Processing and Advanced Oil Processing prerequisites; Organic Esters & Solvents now also requires Lubricant, which its castor-oil route consumes).
  Balancing:
    - Reviewed every recipe against real-world chemistry and lowered yields; the default profile is ~3x more raw-material-hungry per dose than 0.4.0. Highlights: phytosterol extraction 2 -> 1 sterol per 10 wood, microbial degradation 5 -> 4, castor refining 15 -> 10, both oxidative cleavages trimmed, MCT synthesis 15 -> 10, pyridine synthesis 10 -> 5, potassium carbonate 10 -> 5, recrystallization 1:1 -> 5:4 (80% recovery).
    - Diester Formation now uses the stoichiometrically correct 2 equivalents of pyridine base (two esterifications release two HCl).
    - Vial compounding now uses ~10 mL of carrier oil per vial (20 oil per 2 vials).
    - Glass vial molding costs 2 stone per 2 vials; syringes cost 2 plastic per 2.
    - Machine ratios cleaned up so production lines chain into small integers (10:1 extraction:degradation, 5:2 degradation:aromatization, 4:1 chlorination:diester, 10:1 hydrolysis:recrystallization).

Version: 0.4.0
Date: 2026-09-06
  Features:
    - Replaced all placeholder doodle art with real icons: all 19 items now have proper artwork with correct 120x64 mipmap strips.
    - Dedicated icon for finished dose kits (vial + syringe + alcohol wipe combined); EEn vials keep the vial photo.
  Changes:
    - Refreshed item-group and all 4 technology icons.
    - Added tools/icon maker: double-clickable scripts that turn source images into Factorio-ready mipmap strips (items 120x64, item groups 192x128, technologies 480x256).
    - Removed bundled example mods from the repository.

Version: 0.3.0
Date: 2026-09-05
  Features:
    - Estradiol Enanthate can now be suspended in MCT Oil or Castor Oil: two finished-vial and dose variants replace the generic carrier oil route.
    - MCT Oil dose: heals 100 and grants the full temporary speed boost for 120 seconds.
    - Castor Oil dose: heals 200 but grants only a half-strength speed boost for 60 seconds.
  Changes:
    - Removed the Refined Carrier Oil fluid and its synthesis recipe; Sterile Vial Compounding and Dose Kit Assembly are split into MCT and Castor Oil variants.
  Bugfixes:
    - Fixed permanent speed-buff residue from stacking doses; re-dosing now refreshes the buff instead.
    - Organic Esters & Solvents no longer attempts to unlock the nonexistent 'oxidative-cleavage' recipe (now castor-oxidative-cleavage).

Version: 0.2.4
Date: 2026-09-05
  Features:
    - Selective Hydrolysis now yields Methyl Enanthate as a byproduct instead of water.
    - Added Hydrolytic Cracking: splits Methyl Enanthate into Methanol and Heptanoic Acid (enanthic acid) using 165°C+ steam.
    - Added Enanthic Acid Reforming: converts Heptanoic Acid into Light Oil using Sulfuric Acid as a catalyst (recovered on output).
    - Both new recipes unlock with Steroid Esterification and reject productivity modules to prevent methanol recycle-loop exploits.

Version: 0.2.3
Date: 2026-09-05
  Bugfixes:
    - Fixed missing commas in ingredients and results tables across all 17 recipes in recipes.lua (caused Lua syntax errors).
    - Fixed missing commas in effects arrays across all 4 technologies in technologies.lua.
    - Added missing subgroup field to mct-oil fluid definition in fluids.lua.
    - Fixed inconsistent indentation in info.json and fluids.lua.

Version: 0.2.2
Date: 2026-09-05
  Features:
    - Added MCT Oil parallel processing path alongside the existing castor oil route.
    - Castor oil route retained (heavy oil + lubricant); MCT synthesis uses heavy oil + steam.
    - Added MCT Oxidative Cleavage recipe; both cleavage paths converge to heptanoic acid.
    - New mct-oil fluid and recipe icons.

Version: 0.2.1
Date: 2026-09-05
  Features:
    - Added dedicated HRT Production inventory tab with 5 classified subgroups
    - All mod items, fluids, and recipes reorganized under the new tab
    - Added item-group icon and locale entry

Version: 0.2.0
Date: 2026-09-05
  Features:
    - Complete rewrite: removed ore, added full chemical synthesis chain.
    - 12 chemical intermediates across 3 phases.
    - 4 medical supplies (vial, syringe, alcohol pad, dose kit).
    - 15 recipes using chemical plants and assemblers.
    - 4 technology tiers.
    - HRT buff system with configurable strength.
    - Space Age compatibility (conditional loading).

Version: 0.1.1
Date: 2026-09-05
  Bugfixes:
    - Fixed missing icon on aromatization recipe.
    - Fixed missing icons on all custom recipes.
  Changes:
    - Renamed hrt-dose to estradiol-solution.
    - Changed estradiol-formulation recipe to use iron plate instead of copper plate.
    - Ore now spawns like uranium but with slightly smaller patches.
    - Removed transcendence science pack (simplified to consumable-only end product).
    - Removed female character sprites from active mod.

Version: 0.1.0
Date: 2026-09-05
  Features:
    - Initial release.
    - Added Phyto-Sterolium Ore resource with autoplace.
    - Added Mevalonate Solution fluid.
    - Added Sterol Dust, Estradiol Crystals, Estradiol Solution, and Transcendence Science Pack items.
    - Added 5 recipes across smelting, chemistry, and crafting.
    - Added 4 technologies including infinite Self-Actualization research.
    - Added optional female player character sprites.
    - Added HRT buff system with configurable strength.
    - Added mod settings for toggling features.