Image to Three.js Model
img2threejs/img2threejs
Rebuilds the object in a reference image as a procedural, animation-ready Three.js model written entirely in code, using staged sculpting with quality checks.
A skill your agent uses when adding, modifying, or reasoning about Gluj/Glux file format versions, the GluxVersions enum, FileVersion checks, or anything that gates behavior on the version of a…
Install Gluj Versions
$ npx skills add vchelaru/FlatRedBall --skill gluj-versions -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install vchelaru/FlatRedBall gluj-versions --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/vchelaru/FlatRedBall.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/gluj-versions .claude/skills/gluj-versions && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "gluj-versions" agent skill from https://github.com/vchelaru/FlatRedBall/tree/NetStandard/.claude/skills/gluj-versions into .claude/skills/gluj-versions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gluj-versions", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/vchelaru/FlatRedBall/tree/NetStandard/.claude/skills/gluj-versionsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add vchelaru/FlatRedBall --skill gluj-versions -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install vchelaru/FlatRedBall gluj-versions --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vchelaru/FlatRedBall.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/gluj-versions .agents/skills/gluj-versions && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "gluj-versions" agent skill from https://github.com/vchelaru/FlatRedBall/tree/NetStandard/.claude/skills/gluj-versions into .agents/skills/gluj-versions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gluj-versions", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add vchelaru/FlatRedBall --skill gluj-versions -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install vchelaru/FlatRedBall gluj-versions --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vchelaru/FlatRedBall.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/gluj-versions .cursor/skills/gluj-versions && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "gluj-versions" agent skill from https://github.com/vchelaru/FlatRedBall/tree/NetStandard/.claude/skills/gluj-versions into .cursor/skills/gluj-versions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gluj-versions", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/vchelaru/FlatRedBall.git --path .claude/skills/gluj-versions--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add vchelaru/FlatRedBall --skill gluj-versions -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install vchelaru/FlatRedBall gluj-versions --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vchelaru/FlatRedBall.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/gluj-versions .gemini/skills/gluj-versions && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "gluj-versions" agent skill from https://github.com/vchelaru/FlatRedBall/tree/NetStandard/.claude/skills/gluj-versions into .gemini/skills/gluj-versions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gluj-versions", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install vchelaru/FlatRedBall gluj-versionsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add vchelaru/FlatRedBall --skill gluj-versions -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/vchelaru/FlatRedBall.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/gluj-versions .github/skills/gluj-versions && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "gluj-versions" agent skill from https://github.com/vchelaru/FlatRedBall/tree/NetStandard/.claude/skills/gluj-versions into .github/skills/gluj-versions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gluj-versions", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add vchelaru/FlatRedBall --skill gluj-versions -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install vchelaru/FlatRedBall gluj-versions --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vchelaru/FlatRedBall.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/gluj-versions .opencode/skills/gluj-versions && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "gluj-versions" agent skill from https://github.com/vchelaru/FlatRedBall/tree/NetStandard/.claude/skills/gluj-versions into .opencode/skills/gluj-versions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gluj-versions", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
gluj-versions- GitHub stars
- 578
- Token cost
- ~1.4k tokens
- SKILL.md length
- 732 words
- Files
- 1
- Skills in repo
- 32
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when adding, modifying, or reasoning about Gluj/Glux file format versions, the GluxVersions enum, FileVersion checks, or anything that gates behavior on the version of a…
- Works in 4 steps: Add the new enum entry at the bottom of… → Update LatestVersion to point at the new… → Update the SyntaxVersionAttribute on… → …
- Reasoning about Gluj/Glux file format versions
- SKILL.md covers When adding a new version, Retroactively gating a missed…, Embedded code files: where… and Caveat: gating an added…, plus 2 more sections
- Reaches docs.flatredball.com
What it does
Gluj Versions is an agent skill from vchelaru/FlatRedBall. Use when adding, modifying, or reasoning about Gluj/Glux file format versions, the GluxVersions enum, FileVersion checks, or anything that gates behavior on the version of a loaded Glue project.
Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Game Development. The repository describes itself as: Cross-platform 2D game engine focused on ultimate productivity built in .NET. The licence is MIT.
When your agent uses it
- Reasoning about Gluj/Glux file format versions
- The GluxVersions enum
- FileVersion checks
- Anything that gates behavior on the version of a loaded Glue project
Example prompts
- “/gluj-versions”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Add the new enum entry at the bottom of GluxVersions with a dated comment describing what it represents.
- Update LatestVersion to point at the new entry.
- Update the SyntaxVersionAttribute on FlatRedBallServices so the runtime advertises the matching version.
- Update the docs (the local FlatRedBallDocs repo file above), adding a new ### Version N - section matching the existing entries' style.
What it can do on your machine
Read from SKILL.md and the folder at commit 94fbc62. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are csharp).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
docs.flatredball.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Gluj Versions loads about 1.4k tokens when it runs. Until then it costs about 52 tokens; SKILL.md has 732 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from vchelaru/FlatRedBall at commit 94fbc62, republished under its MIT licence (© vchelaru). 732 words, ~1,427 tokens.
Download SKILL.mdSave it as
.claude/skills/gluj-versions/SKILL.md (or your agent's skills folder).- name
- gluj-versions
- description
- Use when adding, modifying, or reasoning about Gluj/Glux file format versions, the GluxVersions enum, FileVersion checks, or anything that gates behavior on the version of a loaded Glue project.
- version
- 1.0.0
Gluj Versions
Glue projects (.gluj/.glux) are versioned so that the editor and runtime can load older projects while still adding new features. Versions are tracked by the GluxVersions enum and LatestVersion constant in:
FRBDK/Glue/GlueCommon/SaveClasses/GlueProjectSave.cs
For background on what each version means and the historical context, see the official docs, published from https://docs.flatredball.com/flatredball/glue-reference/glujglux. That docs site is a GitBook synced from a separate sibling repo checked out locally, C:\Users\vchel\Documents\GitHub\FlatRedBallDocs (relative to this repo, same convention as the Gum sibling repo) — plain markdown, matching the site's URL structure. The glujglux page is glue-reference/glujglux.md in that repo. Edit the file directly rather than treating the docs as remote-only/unreachable.
When adding a new version
Adding a new entry to GluxVersions requires updating several places in lockstep. Miss one and projects will silently load with the wrong feature set.
- Add the new enum entry at the bottom of
GluxVersionswith a dated comment describing what it represents. - Update
LatestVersionto point at the new entry. - Update the
SyntaxVersionAttributeonFlatRedBallServicesso the runtime advertises the matching version. - Update the docs (the local
FlatRedBallDocsrepo file above), adding a new### Version N - <title>section matching the existing entries' style.
Multiple enum entries can share the same integer value when several features land together — this is intentional and already common in the enum.
Retroactively gating a missed breaking change
Sometimes a breaking change ships without being gated behind a version, and the gap is only noticed after a later version has already been cut. In that case, do not invent a new version number. Instead, add a new enum entry at the same integer value as the most recent version that already shipped after the change, with a dated comment explaining the retroactive add. Upgrading to that version then pulls in both changes together.
Example: version 66 (GumHasGueVirtualIsPointInside, Jan 29 2026) was cut after a Jan 17 2026 change to PositionedNode.Tag that wasn't gated. The fix was to add PositionedNodeHasTag = 66 next to it, not to invent a 67.
When you do this, also gate the previously-ungated code in any embedded code files that reference the new API:
- If the embedded file does not already have a
$GLUE_VERSIONS$token at the very top, add one. That token is what the code generator replaces with#definelines for each enum symbol whose value is<= FileVersion. Without it, no#if SymbolNameguard in the file will ever evaluate true. - Wrap the new API usage in
#if SymbolName || REFERENCES_FRB_SOURCE. TheREFERENCES_FRB_SOURCEarm keeps the code live for projects that reference FRB as source rather than NuGet, where the symbol isn't defined but the API exists.
Show full SKILL.md (293 more words)Show less
Embedded code files: where they live and conventions
Embedded code files are templates that get copied into user projects by plugins. They live under FRBDK/Glue/<Plugin>/EmbeddedCodeFiles/*.cs and are registered for inclusion via CodeItemAdderManager (e.g. FRBDK/Glue/TileGraphicsPlugin/TileGraphicsPlugin/Managers/CodeItemAdderManager.cs).
For a known-good reference of the $GLUE_VERSIONS$ + #if SymbolName || REFERENCES_FRB_SOURCE pattern, see FRBDK/Glue/TileGraphicsPlugin/TileGraphicsPlugin/EmbeddedCodeFiles/CollidableListVsTileShapeCollectionRelationship.cs.
Style: these files target older language levels because they get compiled into a wide range of user projects. Do not introduce C# 8 nullable reference annotations (object?, string?, etc.) just because your editor accepts them — match the surrounding sibling files, which use plain object / string.
Caveat: gating an added optional parameter
Wrapping a newly added optional parameter in #if is the standard pattern but it has a sharp edge: the parameter visibly disappears from the method signature on projects below the gating version. Callers passing the argument by position simply don't compile (loud, easy to fix), but callers passing it by name (FillFromPredicate(..., tagForAddedNodes: x)) get a confusing "no such parameter" error rather than a version-mismatch hint.
This is the price of supporting projects that don't pull FRB as source — every embedded file in the codebase does it the same way. Mention this tradeoff if a user is on the fence about gating vs. raising the minimum version.
When gating behavior on a version
Compare FileVersion against a named GluxVersions member, never a magic number:
if (this.FileVersion < (int)GluxVersions.SomeFeature) { ... }This keeps the intent readable and survives renumbering.
New-project FileVersion
A newly-created project's FileVersion is clamped to the referenced engine dll's syntax version
when it's lower than LatestVersion — see GlueProjectSave.GetFileVersionForNewProject
(GlueCommon/SaveClasses/GlueProjectSave.cs), called from ProjectLoader.LoadProject
(Glue/IO/ProjectLoader.cs) only on the first-time-creation path (no existing .glux/.gluj
found). Loading an existing project never goes through this — FileVersion comes straight from
the file, so a user who manually raises it still hits GlueProjectFileVersionErrorViewModel's
error as before.
© vchelaru, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/gluj-versions of vchelaru/FlatRedBall.
Open the folder on GitHubat commit 94fbc62
Compare with similar skills
Gluj Versions next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Gluj Versions this skillvchelaru/FlatRedBall | 578 | — | ~1.4k | Automated safety check: Pass | MIT | |
| Image to Three.js Modelimg2threejs/img2threejs | 18k | 1 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 | |
| Web CloneJane-xiaoer/claude-skill-web-clone | 1k | 1 repos | ~2.7k | Automated safety check: Pass | MIT | |
| Threejs Game Directormajidmanzarpour/threejs-game-skills | 2.5k | — | ~2.2k | Automated safety check: Pass | MIT | |
| Game Asset Generatorhtdt/godogen | 7.1k | — | ~2.8k | Automated safety check: Pass | MIT | |
| Threejs Gameplay Systemsvalkor-ai/loom | 1.2k | 1 repos | ~1.4k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Gluj Versions
What does Gluj Versions do?
A skill your agent uses when adding, modifying, or reasoning about Gluj/Glux file format versions, the GluxVersions enum, FileVersion checks, or anything that gates behavior on the version of a…. Gluj Versions is an agent skill from vchelaru/FlatRedBall. Use when adding, modifying, or reasoning about Gluj/Glux file format versions, the GluxVersions enum, FileVersion checks, or anything that gates behavior on the version of a loaded Glue project.
When should I use Gluj Versions?
Gluj Versions fits situations like: reasoning about Gluj/Glux file format versions; the GluxVersions enum; fileVersion checks; anything that gates behavior on the version of a loaded Glue project.
How do I install Gluj Versions in Claude Code?
Run `npx skills add vchelaru/FlatRedBall --skill gluj-versions -a claude-code`. Or copy the skill folder (.claude/skills/gluj-versions in vchelaru/FlatRedBall) into .claude/skills/gluj-versions in your project. Claude Code loads it when a task matches its description.
How do I install Gluj Versions in Codex?
Run `npx skills add vchelaru/FlatRedBall --skill gluj-versions -a codex`. Or copy the skill folder (.claude/skills/gluj-versions in vchelaru/FlatRedBall) into .agents/skills/gluj-versions in your project. Codex loads it when a task matches its description.
Can I use Gluj Versions in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add vchelaru/FlatRedBall --skill gluj-versions -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gluj-versions, .gemini/skills/gluj-versions, .github/skills/gluj-versions and .opencode/skills/gluj-versions in your project.
What does Gluj Versions need to run?
SKILL.md names no scripts, command-line tools or credentials: Gluj Versions is instructions for the agent only.
Does Gluj Versions access the network?
SKILL.md names 1 domain. In commands or code: docs.flatredball.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Is Gluj Versions safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Gluj Versions use?
Gluj Versions is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Gluj Versions use?
About 1.4k tokens (SKILL.md is roughly 5.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Gluj Versions?
Skills that share tags, products or a category with Gluj Versions: Image to Three.js Model (img2threejs/img2threejs, 18k stars), Web Clone (Jane-xiaoer/claude-skill-web-clone, 1k stars), Threejs Game Director (majidmanzarpour/threejs-game-skills, 2.5k stars) and Game Asset Generator (htdt/godogen, 7.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Gluj Versions?
vchelaru (a GitHub user) maintains it in vchelaru/FlatRedBall, which has 578 GitHub stars. The repository holds 32 skills in this directory. The repository was last updated on October 10, 2026.
Source: vchelaru/FlatRedBall on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.