melonjs-events SKILL.md skillA
melonjs-events from melonjs/melonjs is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add melonjs/melonjs/melonjs-events@git:20261105.7570a25Pins git:20261105.7570a25 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- melonjs/melonjs
- Path
packages/melonjs/skills/melonjs-events/SKILL.md- Versions recorded
- 4
- Latest version
- git:20261105.7570a25, committed Nov 5, 2026
- First version recorded
- Aug 31, 2026
- Size
- 7,705 bytes
- Repository stars
- 6,441
- License
- MIT
Use this skill for the melonJS event bus and lifecycle hooks — subscribing to engine events, the per-frame and per-state event names, renderable lifecycle callbacks, and how to unsubscribe without leaking. Triggers on: event.on, event.off, event.once, event.emit, GAME_UPDATE, GAME_BEFORE_DRAW, LEVEL_LOADED, LOADER_COMPLETE, STATE_CHANGE, CANVAS_ONRESIZE, POINTERMOVE, WORLD_STEP, onActivateEvent, onDeactivateEvent, onDestroyEvent, lifecycle, subscribe, listener.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Events and lifecycle
## The bus
```js
import { event } from "melonjs";
const onUpdate = () => { /* … */ };
const unsubscribe = event.on(event.GAME_UPDATE, onUpdate); // on() returns its own off()
event.once(event.LEVEL_LOADED, () => { /* … */ });
// two ways to undo it — the same reference, or the returned function
event.off(event.GAME_UPDATE, onUpdate);
unsubscribe();
```
`event.on`/`once`/`off`/`has` all take an optional third `context` argument,
invoked as the handler's `this`. **`off` matches on the pair — handler identity
AND context identity.** `on(EVT, fn, this)` followed by `off(EVT, fn)` removes
nothing, silently.
**Store the handler reference, or use the context argument.** An inline arrow or
a fresh `.bind(this)` in the `on` call can never be removed — that is the
standard way to leak listeners in melonJS.
```js
// ✗ unremovable
event.on(event.GAME_UPDATE, this.tick.bind(this));
// ✓ keep the bound reference
this._tick = this.tick.bind(this);
event.on(event.GAME_UPDATE, this._tick);
// later: event.off(event.GAME_UPDATE, this._tick);
// ✓ or skip the bind entirely — the context is part of the identity
event.on(event.GAME_UPDATE, this.tick, this);
…Read the whole file at its exact version.
How to install
mdr add melonjs/melonjs/melonjs-events@sha256:0b93d1e768f2eca5The line at the top of this page pins the label git:20261105.7570a25, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_3n6k3zuya37xb5zf)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Aug 31, 2026 and Nov 5, 2026, about one every 22 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261105.7570a25 latest | 2026-11-05 | 7570a25 | 7,705 B | A | view · diff |
| git:20261011.ea10090 | 2026-10-11 | ea10090 | 7,173 B | A | view · diff |
| git:20261009.e9d134f | 2026-10-09 | e9d134f | 7,047 B | A | view · diff |
| git:20260831.8e2f9be | 2026-08-31 | 8e2f9be | 7,035 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7705 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
melonjs/melonjs · 6,441 stars · license MIT · pushed 2026-11-06 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_3n6k3zuya37xb5zf GET https://markdownregistry.com/api/v1/resolve?ref=melonjs/melonjs/melonjs-events GET https://markdownregistry.com/api/v1/blob/0b93d1e768f2eca503dbdb6760c2f4db425b6941a93c28dcaf2d8627ca6cb2b6
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.