Lisien Devlog - itch.iohttps://clayote.itch.io/lisienLife Simulator Engine for Maxis-like gameshttps://clayote.itch.io/lisien/devlog/1383122/v0233-fix-androidv0.23.3 fix Androidhttps://clayote.itch.io/lisien/devlog/1383122/v0233-fix-androidSun, 15 Feb 2026 16:31:06 GMTdevlogThe Android version had been pretty messed up for a while, and lately hadn't been starting any games. I've fixed it. Changes to the other versions are pretty minimal. Refactoring, mostly. The one diff...

]]>https://clayote.itch.io/lisien/devlog/1363286/v0232-attrsv0.23.2 attrshttps://clayote.itch.io/lisien/devlog/1363286/v0232-attrsTue, 10 Feb 2026 01:17:40 GMTdevlogNearly all of Lisien's classes are declared with attrs in this release. This helps keep instance variables together with their associated validation code, docstrings, and so on, the better to read it...

]]>https://clayote.itch.io/lisien/devlog/1116110/v0231-fix-desktop-corev0.23.1 fix desktop corehttps://clayote.itch.io/lisien/devlog/1116110/v0231-fix-desktop-coreMon, 17 Nov 2025 05:06:48 GMTdevlogApart from some crash and data loss fixes, this fixes the way Lisien instantiates ParquetDB, so that if you use the library on desktop, it will work with the version of ParquetDB that's been officiall...

]]>https://clayote.itch.io/lisien/devlog/1112414/v0230-subinterpretersv0.23.0 subinterpretershttps://clayote.itch.io/lisien/devlog/1112414/v0230-subinterpretersThu, 13 Nov 2025 08:14:00 GMTdevlogThis version adds support for a new kind of parallel processing. If you're on Android, it's the first kind that really works. When you have loads and loads of triggers running at once, it'll be faster...

]]>https://clayote.itch.io/lisien/devlog/1082362/v0225-fix-desktop-game-exportv0.22.5 fix desktop game exporthttps://clayote.itch.io/lisien/devlog/1082362/v0225-fix-desktop-game-exportSat, 11 Oct 2025 14:26:25 GMTdevlogThe example sims were missing some important data, because the export feature was broken. It left out data if you made a sim on ParquetDB (so not Android), then exported it without simulating anything...

]]>https://clayote.itch.io/lisien/devlog/1067325/v0224post1-fix-androidv0.22.4.post1 fix androidhttps://clayote.itch.io/lisien/devlog/1067325/v0224post1-fix-androidSun, 05 Oct 2025 20:53:00 GMTdevlogSorry, I forgot to add astor to the Android version. I'll add a check to make sure something like this doesn't happen again...

]]>https://clayote.itch.io/lisien/devlog/1065478/v0224-method-editorv0.22.4 method editorhttps://clayote.itch.io/lisien/devlog/1065478/v0224-method-editorFri, 03 Oct 2025 18:49:10 GMTdevlogThis release adds the Method and Function tabs to the Python editor in Elide. Method is possibly a bit jank right now, as it requires you to supply the initial self argument yourself, where Python dev...

]]>https://clayote.itch.io/lisien/devlog/1061070/v0223-fix-adding-stuff-to-the-worldv0.22.3 fix adding stuff to the worldhttps://clayote.itch.io/lisien/devlog/1061070/v0223-fix-adding-stuff-to-the-worldSun, 28 Sep 2025 17:29:12 GMTdevlogLast release broke basic world editing functions. The test that should have caught this, didn't...

]]>https://clayote.itch.io/lisien/devlog/1060673/v0222-savegame-fix-on-desktopv0.22.2 savegame fix on desktophttps://clayote.itch.io/lisien/devlog/1060673/v0222-savegame-fix-on-desktopSun, 28 Sep 2025 03:49:16 GMTdevlogThe ParquetDB database backend was not working correctly when using Elide on desktop. This release fixes it. It also fixes a crash happening when you quit out of a game you just imported. Some cases o...

]]>https://clayote.itch.io/lisien/devlog/1038185/v0221-relaxng-schemav0.22.1 RelaxNG schemahttps://clayote.itch.io/lisien/devlog/1038185/v0221-relaxng-schemaMon, 22 Sep 2025 09:43:17 GMTdevlogThis adds a RelaxNG schema in the file world.rng. This is useful if you want to write some other program to make Lisien world.xml files. It turned out the exporter wasn't quite producing standard XML,...

]]>https://clayote.itch.io/lisien/devlog/1035287/v0220-new-export-format-determinismv0.22.0 new export format, determinismhttps://clayote.itch.io/lisien/devlog/1035287/v0220-new-export-format-determinismFri, 19 Sep 2025 08:45:35 GMTdevlogThis release changes the format of exported games. .lisien files are still zip files, really, but instead of keeping the game's database in the zip file, as earlier releases did, .lisien files contain...

]]>https://clayote.itch.io/lisien/devlog/1024426/v0218-no-really-fix-importerv0.21.8 no, really, fix importerhttps://clayote.itch.io/lisien/devlog/1024426/v0218-no-really-fix-importerThu, 04 Sep 2025 16:44:36 GMTdevlogThe importer didn't really work on Android last time. Now it does...

]]>https://clayote.itch.io/lisien/devlog/1023430/v0217-fix-importerv0.21.7 fix importerhttps://clayote.itch.io/lisien/devlog/1023430/v0217-fix-importerWed, 03 Sep 2025 01:08:29 GMTdevlogAt some point, I set Elide on Android to put its games in the wrong directory, which meant it would try to open imported games there, which weren't imported there . So it'd start a new game instead. T...

]]>https://clayote.itch.io/lisien/devlog/1019122/v0216-fix-rule-builderv0.21.6 fix rule builderhttps://clayote.itch.io/lisien/devlog/1019122/v0216-fix-rule-builderThu, 28 Aug 2025 20:40:38 GMTdevlogThe Elide rule builder wasn't showing any cards. But now it shows them again...

]]>https://clayote.itch.io/lisien/devlog/1018755/v0215-fix-new-game-button-againv0.21.5 fix new game button *again*https://clayote.itch.io/lisien/devlog/1018755/v0215-fix-new-game-button-againThu, 28 Aug 2025 09:04:00 GMTdevlogYeah, there was another issue starting games in Elide. I'll focus on improving the automated tests for Elide before working on new features...

]]>https://clayote.itch.io/lisien/devlog/1017703/v0214-reorderable-rulesv0.21.4 reorderable ruleshttps://clayote.itch.io/lisien/devlog/1017703/v0214-reorderable-rulesTue, 26 Aug 2025 19:09:00 GMTdevlogThis is really a bugfix release, so that the example sims can be imported into Elide correctly, but I've also added buttons to let you reorder rules. Rule books still go in more or less alphabetical o...

]]>https://clayote.itch.io/lisien/devlog/1016648/example-simsexample simshttps://clayote.itch.io/lisien/devlog/1016648/example-simsMon, 25 Aug 2025 04:25:28 GMTdevlogHere are some sims you can import into Elide. They're the same as the ones by these names in the `lisien.examples` module. You just can't see that module on Android, unless you're running `adb shell`...

]]>https://clayote.itch.io/lisien/devlog/1014497/v0213-you-can-start-games-on-android-againv0.21.3 you can start games on Android againhttps://clayote.itch.io/lisien/devlog/1014497/v0213-you-can-start-games-on-android-againFri, 22 Aug 2025 05:41:01 GMTdevlogThis release fixes a couple issues that could prevent the "New game" function from really starting a new game on Android...

]]>https://clayote.itch.io/lisien/devlog/1008754/v0212-you-can-see-elide-againv0.21.2 you can see Elide againhttps://clayote.itch.io/lisien/devlog/1008754/v0212-you-can-see-elide-againThu, 14 Aug 2025 04:02:37 GMTdevlogThe 0.21.0 update broke Elide's packaging in a way that kept it working on my machine, but left one very major file out of the package. This 0.21.2 release puts it back, so you can use Elide again...

]]>https://clayote.itch.io/lisien/devlog/1005619/v0210-bookmarksv0.21.0 bookmarkshttps://clayote.itch.io/lisien/devlog/1005619/v0210-bookmarksSat, 09 Aug 2025 16:23:45 GMTdevlogThis release adds bookmarks, which let you assign names to points in time. Then you can travel between them more conveniently. It was always possible to store the (branch, turn, tick) yourself, but th...

]]>https://clayote.itch.io/lisien/devlog/1000744/v0202v0.20.2https://clayote.itch.io/lisien/devlog/1000744/v0202Sun, 03 Aug 2025 04:19:00 GMTdevlogThis release cleans up a lot of internals, ruling out some types of data loss. Overhauled the internal WindowDict class and its relatives, ruling out a bunch of race conditions that caused intermitten...

]]>https://clayote.itch.io/lisien/devlog/988867/v0201v0.20.1https://clayote.itch.io/lisien/devlog/988867/v0201Fri, 18 Jul 2025 10:21:53 GMTdevlogThis is a bugfix release. I tracked down a bunch of intermittent crashes related to interprocess serialization and deltas. The proxy interface is more complete now, too, which will come in handy when...

]]>https://clayote.itch.io/lisien/devlog/981231/v0200-android-supportv0.20.0 Android supporthttps://clayote.itch.io/lisien/devlog/981231/v0200-android-supportSun, 06 Jul 2025 20:33:14 GMTdevlogThis release adds support for Android. Currently, the Android version is only distributed on Itch, not on the Play Store. Elide now has a main menu. The "export game" option simply compresses a game's...

]]>https://clayote.itch.io/lisien/devlog/951017/v0193v0.19.3https://clayote.itch.io/lisien/devlog/951017/v0193Fri, 23 May 2025 15:22:40 GMTdevlogFix keyframes sometimes getting made every tick, if the automatic keyframe creation was overridden. This could cause major slowdown, apparently at random. Require ParquetDB version 1.0.1 Fix some free...

]]>https://clayote.itch.io/lisien/devlog/938280/v0192post1v0.19.2.post1https://clayote.itch.io/lisien/devlog/938280/v0192post1Sun, 04 May 2025 18:33:26 GMTdevlogThis release fixes the Elide packages, including lisien-windows.zip, so that they include the graphics they need...

]]>https://clayote.itch.io/lisien/devlog/932346/v0192v0.19.2https://clayote.itch.io/lisien/devlog/932346/v0192Fri, 25 Apr 2025 20:29:46 GMTdevlogAdded the option to run Lisien without connecting to any database. This is mainly useful for testing. Instantiate the engine like Engine(None) to use. Rewrote the string store, Engine.string , to save...

]]>https://clayote.itch.io/lisien/devlog/928348/v0191v0.19.1https://clayote.itch.io/lisien/devlog/928348/v0191Sat, 19 Apr 2025 16:20:51 GMTdevlogFixed big rules not resetting the time at the end of a plan block Fixed character rulebooks becoming unset after some time travel operations Fixed picking a starting directory in Elide Removed `thread...

]]>https://clayote.itch.io/lisien/devlog/924265/v0190-small-filesv0.19.0 small fileshttps://clayote.itch.io/lisien/devlog/924265/v0190-small-filesSun, 13 Apr 2025 06:39:33 GMTdevlogThis release changes the default storage backend from SQLite to ParquetDB , which takes something like 1/20 as much space for the same data. I did a lot of refactoring, too, and improved test coverage...

]]>https://clayote.itch.io/lisien/devlog/892631/v0183v0.18.3https://clayote.itch.io/lisien/devlog/892631/v0183Sun, 23 Feb 2025 00:06:20 GMTdevlogThis release fixes a major memory leak that made Lisien unusable after a few thousand rules ran...

]]>https://clayote.itch.io/lisien/devlog/890754/v0182v0.18.2https://clayote.itch.io/lisien/devlog/890754/v0182Wed, 19 Feb 2025 20:35:31 GMTdevlogThis release fixes a crash that was hard to find, because it usually happened when you closed the engine. 0.19 will have a new storage format that's a great deal more efficient with disk space...

]]>https://clayote.itch.io/lisien/devlog/886699/v0181v0.18.1https://clayote.itch.io/lisien/devlog/886699/v0181Thu, 13 Feb 2025 15:23:31 GMTdevlogA couple of crash fixes that were really very easy to run into. I'm aware of a major graphical problem preventing you from seeing the grid view in Elide. I'll work on that for the next micro release...

]]>https://clayote.itch.io/lisien/devlog/886357/v0180-big-rulesv0.18.0 big ruleshttps://clayote.itch.io/lisien/devlog/886357/v0180-big-rulesWed, 12 Feb 2025 22:33:34 GMTdevlogThis is the first release under the new name, Lisien. This release adds an option to mark any rule as "big," which enables an optimization to make a lot of changes to the world all at once. An optimiz...

]]>https://clayote.itch.io/lisien/devlog/878795/name-change-imminentName change imminenthttps://clayote.itch.io/lisien/devlog/878795/name-change-imminentSat, 01 Feb 2025 03:01:41 GMTdevlog"LiSE" turns out to be a hard name to search for. You can find it on itch.io, sure, but if you try it on Google or whatever, the given name "Lise," a variant of "Lisa," buries it. So I'll change the n...

]]>https://clayote.itch.io/lisien/devlog/842385/01720.17.2https://clayote.itch.io/lisien/devlog/842385/0172Sat, 30 Nov 2024 02:31:28 GMTdevlogThe rules engine hasn't really been working since 0.17. This release fixes it...

]]>https://clayote.itch.io/lisien/devlog/830629/01710.17.1https://clayote.itch.io/lisien/devlog/830629/0171Fri, 08 Nov 2024 23:09:07 GMTdevlogDisable editing all throughout ELiDE whenever the simulation is running. It was only disabled sometimes, in some parts of the UI. Add a button to edit a function card without backing out of the rule e...

]]>https://clayote.itch.io/lisien/devlog/825459/01700.17.0https://clayote.itch.io/lisien/devlog/825459/0170Thu, 31 Oct 2024 08:07:57 GMTdevlogThis release has no new features. However, I've rewritten around half of the internal structure of LiSE. It should be a lot more stable now...

]]>https://clayote.itch.io/lisien/devlog/817631/016160.16.16https://clayote.itch.io/lisien/devlog/817631/01616Fri, 18 Oct 2024 09:01:06 GMTdevlogFix pawn duplication in ELiDE. There are some inconsistent losses of state that I'm trying to diagnose. I might end up shipping some debug code, just to see if anyone *else* finds out why stuff someti...

]]>https://clayote.itch.io/lisien/devlog/816635/016150.16.15https://clayote.itch.io/lisien/devlog/816635/01615Wed, 16 Oct 2024 10:07:02 GMTdevlogThis fixes one other way that pawns in ELiDE could lose their graphics...

]]>https://clayote.itch.io/lisien/devlog/816567/016140.16.14https://clayote.itch.io/lisien/devlog/816567/01614Wed, 16 Oct 2024 05:17:57 GMTdevlogThis fixes a load of graphical glitches that resulted from inadvertently having two ways of updating the interface to match the state of the sim...

]]>https://clayote.itch.io/lisien/devlog/816444/016130.16.13https://clayote.itch.io/lisien/devlog/816444/01613Tue, 15 Oct 2024 23:07:30 GMTdevlogFix worker process states getting desynchronized when you made a new character Fix methods not being callable in worker processes Improved performance when planning a lot of future state Made the LiSE...

]]>https://clayote.itch.io/lisien/devlog/815361/0162-and-016120.16.2 and 0.16.12https://clayote.itch.io/lisien/devlog/815361/0162-and-01612Mon, 14 Oct 2024 02:53:26 GMTdevlogFix some crash bugs in ELiDE. This resulted in a bigger version bump in LiSE than I intended, due to a typo. I guess I'll roll with it...

]]>https://clayote.itch.io/lisien/devlog/815062/01610.16.1https://clayote.itch.io/lisien/devlog/815062/0161Sun, 13 Oct 2024 16:11:00 GMTdevlogFix some incoherent world state that could result from doing things on tick zero of turn zero, if you started the world with a NetworkX graph. Fix a rule running when it shouldn't have in the wolfshee...

]]>https://clayote.itch.io/lisien/devlog/813642/0160-multiprocess-parallelism0.16.0 multiprocess parallelismhttps://clayote.itch.io/lisien/devlog/813642/0160-multiprocess-parallelismFri, 11 Oct 2024 00:24:01 GMTdevlogThis release adds full multiprocess support: by default, LiSE will run your rules' triggers in subprocesses, so it'll be faster than before when there are lots of triggers. If you know a bit about par...

]]>https://clayote.itch.io/lisien/devlog/791630/01590.15.9https://clayote.itch.io/lisien/devlog/791630/0159Sun, 01 Sep 2024 03:17:38 GMTdevlogMore data corruption and concurrency fixes. I'll keep on making these until I have at least the entirety of handle.py covered in unit tests. Probably cache.py too. To install or upgrade in a terminal:...

]]>https://clayote.itch.io/lisien/devlog/788920/01570.15.7https://clayote.itch.io/lisien/devlog/788920/0157Tue, 27 Aug 2024 08:02:40 GMTdevlogThis fixes a bunch of database corruption issues...

]]>https://clayote.itch.io/lisien/devlog/782337/v0156v0.15.6https://clayote.itch.io/lisien/devlog/782337/v0156Thu, 15 Aug 2024 15:46:52 GMTdevlogFix Thing objects occasionally forgetting their location...

]]>https://clayote.itch.io/lisien/devlog/779753/01550.15.5https://clayote.itch.io/lisien/devlog/779753/0155Sat, 10 Aug 2024 13:08:07 GMTdevlogFix a crash when resuming ELiDE in the past of a simulation Fix rules sometimes not triggering, based on when the trigger was set...

]]>https://clayote.itch.io/lisien/devlog/778340/01540.15.4https://clayote.itch.io/lisien/devlog/778340/0154Wed, 07 Aug 2024 21:54:45 GMTdevlog* Fix time travel via rule stepper * Restore the ability to delete Characters * Even faster interbranch time travel * Fix a crash when time traveling between times with no changes to the world...

]]>https://clayote.itch.io/lisien/devlog/769194/01530.15.3https://clayote.itch.io/lisien/devlog/769194/0153Mon, 22 Jul 2024 07:44:07 GMTdevlogJust crash fixes in this one. There were some oversights in the handling of deltas done the newer, faster way...

]]>https://clayote.itch.io/lisien/devlog/759852/0152-crash-fixes-performance-improvements0.15.2 crash fixes, performance improvementshttps://clayote.itch.io/lisien/devlog/759852/0152-crash-fixes-performance-improvementsThu, 04 Jul 2024 14:29:39 GMTdevlogThere were some embarrassing crashes getting in the way of using the previous release that I've fixed. You may have run into them simply trying to imitate what happened in the demo video. I improved t...

]]>https://clayote.itch.io/lisien/devlog/755886/0151-small-update0.15.1 small updatehttps://clayote.itch.io/lisien/devlog/755886/0151-small-updateThu, 27 Jun 2024 08:58:12 GMTdevlogThis update to the life sim engine is purely a bugfix. There was a lock missing from one of the caches...

]]>https://clayote.itch.io/lisien/devlog/751092/v0150-automatic-unloadingv0.15.0 Automatic Unloadinghttps://clayote.itch.io/lisien/devlog/751092/v0150-automatic-unloadingTue, 18 Jun 2024 11:07:50 GMTdevlog

Automatically unload history, thus minimizing memory usage for long games By default, this happens whenever you commit changes to the database. Improved support for ELiDE widgets in games New example...

]]>https://clayote.itch.io/lisien/devlog/707967/time-travelTime travelhttps://clayote.itch.io/lisien/devlog/707967/time-travelMon, 01 Apr 2024 20:52:28 GMTdevlogTime travel was the very first feature I ever wanted LiSE to have. I took one look at Inform 7's Skein view and knew I needed it; why hadn't anyone done that for other types of game? The very earliest...

]]>https://clayote.itch.io/lisien/devlog/523656/v0142v0.14.2https://clayote.itch.io/lisien/devlog/523656/v0142Sat, 29 Apr 2023 21:02:18 GMTdevlogThis is a bugfix release. There was an error in the way the loader marked what it had loaded, such that it would sometimes think it had loaded stuff it hadn't...

]]>https://clayote.itch.io/lisien/devlog/513882/v0140v0.14.0https://clayote.itch.io/lisien/devlog/513882/v0140Sat, 08 Apr 2023 04:27:23 GMTdevlogSeek bar for time travel in ELiDE, and some other minor UI improvements Vastly improved performance in ELiDE for large worlds History queries no longer require the whole of history to be loaded, and a...

]]>https://clayote.itch.io/lisien/devlog/411000/v0132v0.13.2https://clayote.itch.io/lisien/devlog/411000/v0132Sun, 31 Jul 2022 20:31:59 GMTdevlogThis is a performance and bugfix release. The main bug was in the caching infrastructure, where deletions that occurred after a significant gap in the history of entity existence would not be recorded...

]]>https://clayote.itch.io/lisien/devlog/407838/v013-timestreamv0.13 "Timestream"https://clayote.itch.io/lisien/devlog/407838/v013-timestreamSun, 24 Jul 2022 01:25:49 GMTdevlogThis update is the debut of the timestream view, which makes it easier to time travel between branches of history. It also solves major issues preventing branches from being very useful--some crashes,...

]]>https://clayote.itch.io/lisien/devlog/270586/v0121v0.12.1https://clayote.itch.io/lisien/devlog/270586/v0121Sun, 04 Jul 2021 19:46:22 GMTdevlogThis release fixes a number of crashes and non-functional interface elements, and adds the rule stepper to the ELiDE frontend. This can be found in the bottom right. Use it to view the state of a simu...

]]>https://clayote.itch.io/lisien/devlog/245019/designers-wantedDesigners Wantedhttps://clayote.itch.io/lisien/devlog/245019/designers-wantedWed, 21 Apr 2021 10:49:05 GMTdevlogLiSE is inching toward actual usefulness, but there aren't any real games in it yet. I am not a game designer. When I tried to conceptualize a game for the engine I came up with Dungeon University , w...

]]>https://clayote.itch.io/lisien/devlog/244584/v0112v0.11.2https://clayote.itch.io/lisien/devlog/244584/v0112Tue, 20 Apr 2021 02:24:09 GMTdevlogThis is a bugfix release for a broken UI element. It also raises the required version of Pygments due to a security issue...

]]>https://clayote.itch.io/lisien/devlog/233041/v0111v0.11.1https://clayote.itch.io/lisien/devlog/233041/v0111Thu, 18 Mar 2021 03:58:24 GMTdevlogThis is just a bugfix release because the keyframes were only working if you made one per session. Otherwise they'd overwrite each other and make an incoherent world state...

]]>https://clayote.itch.io/lisien/devlog/219811/the-keyframe-updateThe Keyframe Updatehttps://clayote.itch.io/lisien/devlog/219811/the-keyframe-updateSat, 06 Feb 2021 15:22:35 GMTdevlog

Keyframes make the engine run at a usable speed for big worlds. To take advantage, either use ELiDE's new grid generation feature to make a new game (should be automatic), or instantiate a Character w...

]]>https://clayote.itch.io/lisien/devlog/72101/v010v0.10https://clayote.itch.io/lisien/devlog/72101/v010Sat, 16 Mar 2019 21:10:02 GMTdevlogImproved documentation. Improved performance. Prevented the user from trying to start the rules engine while it's already running. Minor API changes. clear_world and clear_code are now one option, cle...

]]>https://clayote.itch.io/lisien/devlog/54064/v09v0.9https://clayote.itch.io/lisien/devlog/54064/v09Tue, 30 Oct 2018 12:49:06 GMTdevlog

This release is for ProcJam 2018. Changed license to AGPL3+, but also waive rights in case of my death. Switched to semantic versioning. Made the frontend experience faster by implementing deltas. Use...

]]>