# Threejs Gameplay Systems

> Design and implement playable Three.js game loops, architecture, controls, cameras, physics, levels, encounters, audio hooks, feedback, and game feel.

- **Type:** Skill
- **Install:** `agentstack add skill-mintdotgg-mint-threejs-skills-threejs-gameplay-systems`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [mintdotgg](https://agentstack.voostack.com/s/mintdotgg)
- **Installs:** 0
- **Category:** [Content & Media](https://agentstack.voostack.com/c/content-and-media)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [mintdotgg](https://github.com/mintdotgg)
- **Source:** https://github.com/mintdotgg/mint-threejs-skills/tree/main/skills/mint-threejs-skills/skills/threejs-gameplay-systems
- **Website:** https://mcp.mint.gg

## Install

```sh
agentstack add skill-mintdotgg-mint-threejs-skills-threejs-gameplay-systems
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Three.js Gameplay Systems

Create a playable, maintainable loop with clear ownership and responsive
controls.

## Read By Need

- Always for implementation: `references/gameplay-workflows.md`.
- New games, major loop changes, levels, encounters, progression, or difficulty:
  `references/game-design-level-design.md`.
- Physics or collision-heavy work: `references/physics-engine-selection.md`.
- Model axes, constrained motion, multiple moving actors, or terrain queries:
  `../../references/spatial-contracts.md`.
- Feel, impact, juice, or polished gameplay: `references/game-feel.md`.
- Before claiming broad gameplay complete: `references/quality-gates.md`.
- Generated audio or 3D gameplay assets:
  `../../references/mint-mcp-assets.md`.

## Workflow

1. Inspect scripts, dependencies, loop ownership, input, camera, state, entities,
   UI, diagnostics, and current gameplay.
2. Define the player promise, primary verb, objective, pressure, reward,
   fail/retry path, skill expression, and non-goals.
3. Plan the first playable space or encounter: start, decision, threat, reward,
   escalation, recovery, and landmarks.
4. Choose small ownership boundaries such as `core`, `game`, `entities`,
   `systems`, `assets`, `ui`, and `tests`.
5. Implement in playable increments: input, state, entity, collision/physics,
   feedback, HUD/audio event, and diagnostics.
6. Tune movement, camera, timing, difficulty, feedback, and restart through
   short play loops.
7. Verify build, browser rendering, real input, objective progress, and
   fail/retry when relevant.

Gameplay code emits audio events. Mint-produced audio files belong in a stable
runtime asset matrix; Mint MCP calls never belong in browser code.

## New-Game Scaffold

```bash
python3 /scripts/create_threejs_game.py ./my-game
```

Use `--force` only when overwriting the target is intended.

## Technical Defaults

- TypeScript, Vite, and Three.js modules.
- Custom collision for simple arcade triggers; Rapier for robust rigid-body
  gameplay; cannon-es only when its smaller JavaScript footprint is useful.
- Fixed-step simulation for physics and seeded randomness for deterministic QA.
- Shared resources, explicit update order, and allocation-light hot paths.
- Web Audio for playback; Mint MCP for generated production audio.

## Final Response

Report player-facing behavior, controls, design/level decisions when relevant,
architecture, tuned values, verification evidence, assets, and remaining edge
cases.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [mintdotgg](https://github.com/mintdotgg)
- **Source:** [mintdotgg/mint-threejs-skills](https://github.com/mintdotgg/mint-threejs-skills)
- **License:** MIT
- **Homepage:** https://mcp.mint.gg

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-mintdotgg-mint-threejs-skills-threejs-gameplay-systems
- Seller: https://agentstack.voostack.com/s/mintdotgg
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.