Engine v5.2.6

July 27, 2026

A patch to Lume.

Fixed a failure mode where a player could sink into (or bob on) one patch of ground forever with no explanation: if the game client repeatedly fails to build the ground under a player, it now stops silently retrying, tells Savi exactly which chunk failed and why, and shows the affected player an honest "reload to rejoin" message instead of leaving them stuck.
Fixed a bug where models spawned by scripts with a layout.maxExtents size limit could render at their raw file size forever — giant enemies, or tiny ones invisible under a floating name tag — until the room was reloaded. Size limits now apply as soon as the model's real dimensions are known, and a size already computed elsewhere is never discarded while a client is still loading.
If your multiplayer game polls getOverlapping()/getTouching()/isTouching() from server-side code, Savi now gets told once — with the reason and the fix (read contacts in the entity's own scripts and share results as state) — instead of the game silently answering "no contacts" forever behind a generic warning.
When a game spawns more physics props than the simulation can carry (piles of falling crates, rain-of-weapons spawners), Savi now gets told once — with the actual numbers (how many dynamic bodies, how far over the tick budget) and the fix (despawn or pool spawned props, cap spawner counts) — instead of the room silently grinding to a slideshow with no diagnostics anywhere.
Fixed mouse-only and touch-only games permanently losing input after interacting with the chat overlay: if the engine's input mode got stuck thinking the overlay was open, keyboard games self-healed but pointer games stayed dead until a page refresh. Clicks and taps now trigger the same self-heal keys always had.
Fixed mouse clicks doing nothing in games built on the new engine UI layer — every world click was being cancelled by a focus bounce before your onInput code could see it (keyboard bindings were unaffected, which is why key controls kept working).
Fixed right-click over the game world popping the browser's context menu instead of reaching your game, in normal play and god mode.
Fixed multiplayer rooms losing their server-side scheduling after an engine upgrade: crons, lifecycle hooks, shared storage writes from crons, and custom jobs all worked on 5.2.4 and silently broke on 5.2.5 (storage errors like "A player can only read/write its own storage", jobs that never came back). Server-side execution stays on for these rooms now.
Custom jobs submitted where nothing can run them now fail immediately with an error that says why and where the job runs, instead of hanging forever.
Objects placed by ground height in a place whose terrain isn't set up no longer get silently pinned underground forever: the engine refuses to invent a ground of 0, says so once in the logs, and places the object on the ground automatically the moment the place's terrain arrives.
In worlds with legacy sculpted terrain, "place on the ground" now means the ground you actually see — sculpt edits count for placement exactly like they count for walking.
getTerrainHeight returns null instead of a misleading 0 when a place has no terrain — so scripts can tell "flat ground at 0" apart from "no ground here at all".
Physics calls that can't work where you put them now tell Savi why, once, with the fix — instead of silently doing nothing. If your enemies never moved or your traps never triggered, this is the family that now explains itself.
Fixed multiplayer rooms losing cron autosaves and disconnect saves that touch shared storage: those writes failed with "A player can only read/write its own storage" in some rooms. Crons and lifecycle hooks now save shared storage in every room; player storage stays protected from other players exactly as before.
Your world's look can now use multi-pass effects: motion trails, glow that accumulates over time, dreamy feedback loops, and blur chains — all from the same look scripts Savi already writes.
Generated characters and models stopped turning near-black in shade: models whose material never said how metallic it was were being treated as polished mirrors. They now read as normal matte surfaces — fabric, skin, and painted detail show again, including models generated over the last week and a half.
Placing things on blocky (voxel) terrain now puts their feet exactly on top of the ground — no more objects sinking into blocks or hovering over them, especially in 2D worlds with small block sizes.
Terrain queries far from any player now say "that part of the world isn't loaded here" instead of pretending it's empty air — so a probe 100 m away can't convince anyone (Savi included) that solid ground never generated. The log line that appears alongside explains where probing works and why.
Characters can now ragdoll: api.ragdoll(enemyId, { impulse: [300, 150, 0] }) flips a rigged character into loose physics — it crumples with its running momentum, tumbles off ledges, and settles into a heap. api.unragdoll() stands it back up with a smooth blend into animation (no pose snap). Works on players and NPCs in mantle-physics worlds; ragdolls freeze solid after settling so a battlefield of bodies stays fast.
In first-person games the player's shadow no longer vanishes: hiding your own body from the camera used to erase its shadow too — the shadow now stays on the ground while the body stays out of view.
First-person weapons Savi builds now line up by construction: iron sights land on the crosshair from the weapon's own declared geometry instead of guessed offsets, and hands are authored in the weapon's frame so they can't drift off the grip.
Savi can now actually see the code-authored models she builds for you (scripted and custom geometry) in her isolated preview before they enter your world — those pieces used to be skipped, so hand-crafted props were built blind.
Signs keep their authored size and text styling everywhere: updating a sign's text (like a score or percent counter) can no longer reset it to a giant default board after the room restarts or players come and go.
"Delete everything and start me over" now works in one clean step: when you explicitly ask for a full wipe, Savi can reset your world to a fresh starter instantly instead of dismantling it piece by piece. Switching starters while keeping your work stays protected exactly as before.

Engine v5.2.6

July 27, 2026

A patch to Lume.

Fixed a failure mode where a player could sink into (or bob on) one patch of ground forever with no explanation: if the game client repeatedly fails to build the ground under a player, it now stops silently retrying, tells Savi exactly which chunk failed and why, and shows the affected player an honest "reload to rejoin" message instead of leaving them stuck.
Fixed a bug where models spawned by scripts with a layout.maxExtents size limit could render at their raw file size forever — giant enemies, or tiny ones invisible under a floating name tag — until the room was reloaded. Size limits now apply as soon as the model's real dimensions are known, and a size already computed elsewhere is never discarded while a client is still loading.
If your multiplayer game polls getOverlapping()/getTouching()/isTouching() from server-side code, Savi now gets told once — with the reason and the fix (read contacts in the entity's own scripts and share results as state) — instead of the game silently answering "no contacts" forever behind a generic warning.
When a game spawns more physics props than the simulation can carry (piles of falling crates, rain-of-weapons spawners), Savi now gets told once — with the actual numbers (how many dynamic bodies, how far over the tick budget) and the fix (despawn or pool spawned props, cap spawner counts) — instead of the room silently grinding to a slideshow with no diagnostics anywhere.
Fixed mouse-only and touch-only games permanently losing input after interacting with the chat overlay: if the engine's input mode got stuck thinking the overlay was open, keyboard games self-healed but pointer games stayed dead until a page refresh. Clicks and taps now trigger the same self-heal keys always had.
Fixed mouse clicks doing nothing in games built on the new engine UI layer — every world click was being cancelled by a focus bounce before your onInput code could see it (keyboard bindings were unaffected, which is why key controls kept working).
Fixed right-click over the game world popping the browser's context menu instead of reaching your game, in normal play and god mode.
Fixed multiplayer rooms losing their server-side scheduling after an engine upgrade: crons, lifecycle hooks, shared storage writes from crons, and custom jobs all worked on 5.2.4 and silently broke on 5.2.5 (storage errors like "A player can only read/write its own storage", jobs that never came back). Server-side execution stays on for these rooms now.
Custom jobs submitted where nothing can run them now fail immediately with an error that says why and where the job runs, instead of hanging forever.
Objects placed by ground height in a place whose terrain isn't set up no longer get silently pinned underground forever: the engine refuses to invent a ground of 0, says so once in the logs, and places the object on the ground automatically the moment the place's terrain arrives.
In worlds with legacy sculpted terrain, "place on the ground" now means the ground you actually see — sculpt edits count for placement exactly like they count for walking.
getTerrainHeight returns null instead of a misleading 0 when a place has no terrain — so scripts can tell "flat ground at 0" apart from "no ground here at all".
Physics calls that can't work where you put them now tell Savi why, once, with the fix — instead of silently doing nothing. If your enemies never moved or your traps never triggered, this is the family that now explains itself.
Fixed multiplayer rooms losing cron autosaves and disconnect saves that touch shared storage: those writes failed with "A player can only read/write its own storage" in some rooms. Crons and lifecycle hooks now save shared storage in every room; player storage stays protected from other players exactly as before.
Your world's look can now use multi-pass effects: motion trails, glow that accumulates over time, dreamy feedback loops, and blur chains — all from the same look scripts Savi already writes.
Generated characters and models stopped turning near-black in shade: models whose material never said how metallic it was were being treated as polished mirrors. They now read as normal matte surfaces — fabric, skin, and painted detail show again, including models generated over the last week and a half.
Placing things on blocky (voxel) terrain now puts their feet exactly on top of the ground — no more objects sinking into blocks or hovering over them, especially in 2D worlds with small block sizes.
Terrain queries far from any player now say "that part of the world isn't loaded here" instead of pretending it's empty air — so a probe 100 m away can't convince anyone (Savi included) that solid ground never generated. The log line that appears alongside explains where probing works and why.
Characters can now ragdoll: api.ragdoll(enemyId, { impulse: [300, 150, 0] }) flips a rigged character into loose physics — it crumples with its running momentum, tumbles off ledges, and settles into a heap. api.unragdoll() stands it back up with a smooth blend into animation (no pose snap). Works on players and NPCs in mantle-physics worlds; ragdolls freeze solid after settling so a battlefield of bodies stays fast.
In first-person games the player's shadow no longer vanishes: hiding your own body from the camera used to erase its shadow too — the shadow now stays on the ground while the body stays out of view.
First-person weapons Savi builds now line up by construction: iron sights land on the crosshair from the weapon's own declared geometry instead of guessed offsets, and hands are authored in the weapon's frame so they can't drift off the grip.
Savi can now actually see the code-authored models she builds for you (scripted and custom geometry) in her isolated preview before they enter your world — those pieces used to be skipped, so hand-crafted props were built blind.
Signs keep their authored size and text styling everywhere: updating a sign's text (like a score or percent counter) can no longer reset it to a giant default board after the room restarts or players come and go.
"Delete everything and start me over" now works in one clean step: when you explicitly ask for a full wipe, Savi can reset your world to a fresh starter instantly instead of dismantling it piece by piece. Switching starters while keeping your work stays protected exactly as before.