building-mechanics
Three.js 3D building system with spatial indexing, structural physics, and multiplayer networking. Use when creating survival games, sandbox builders, or any game with player-constructed structures. Covers performance optimization (spatial hash grids, octrees, chunk loading), structural validation (arcade/heuristic/realistic physics modes), and multiplayer sync (delta compression, client prediction, conflict resolution).
- Installs
- 74
- Last 24h
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/bbeierle12/skill-mcp-claude --skill building-mechanics- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads building-mechanics automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
3D Building Mechanics
Complete building system for Three.js games with performance optimization, structural physics, and multiplayer networking.
Quick Start
import { SpatialHashGrid } from './scripts/spatial-hash-grid.js';
import { HeuristicValidator } from './scripts/heuristic-validator.js';
// Spatial indexing for fast queries
const spatialIndex = new SpatialHashGrid(10);
spatialIndex.insert(piece, piece.position);
const nearby = spatialIndex.queryRadius(position, 15);
// Structural validation (Rust/Valheim style)
const validator = new HeuristicValidator({ mode: 'heuristic' });
validator.addPiece(piece);
const canPlace = validator.validatePlacement(newPiece);
Reference Files
Read these for detailed implementation guidance:
references/performance-at-scale.md- Spatial partitioning, chunk loading, instancing, LODreferences/structural-physics-advanced.md- Arcade vs heuristic vs realistic physicsreferences/multiplayer-networking.md- Authority models, delta sync, conflict resolution
Scripts
Performance (references/performance-at-scale.md)
scripts/spatial-hash-grid.js- O(1) queries for uniform distributionscripts/octree.js- Adaptive queries for clustered basesscripts/chunk-manager.js- World streaming for large mapsscripts/performance-profiler.js- Benchmarking utilities
Structural Physics (references/structural-physics-advanced.md)
scripts/heuristic-validator.js- Fast validation (Fortnite/Rust/Valheim modes)scripts/stability-optimizer.js- Caching and batch updatesscripts/damage-propagation.js- Damage states, cascading collapsescripts/physics-engine-lite.js- Optional realistic physics
Multiplayer (references/multiplayer-networking.md)
scripts/delta-compression.js- Only send changed statescripts/client-prediction.js- Optimistic placement with rollbackscripts/conflict-resolver.js- Handle simultaneous buildsscripts/building-network-manager.js- Complete server/client system
Key Patterns
Spatial Indexing Selection
| Pieces | Distribution | Use |
|---|---|---|
| <1,000 | Any | Array |
| 1-5k | Uniform | SpatialHashGrid |
| 1-5k | Clustered | Octree |
| 5k+ | Any | ChunkManager + Octree |
Physics Mode Selection
- Arcade (Fortnite): Connectivity only, instant collapse, best for combat
- Heuristic (Rust/Valheim): Stability %, predictable, best for survival
- Realistic: Full stress/strain, expensive, best for engineering sims
Multiplayer Pattern
Server-authoritative with client prediction. Use delta compression for sync.
FAQ
What does the building-mechanics skill do?
Three.js 3D building system with spatial indexing, structural physics, and multiplayer networking. Use when creating survival games, sandbox builders, or any game with player-constructed structures. Covers performance optimization (spatial hash grids, octrees, chunk loading), structural validation (arcade/heuristic/realistic physics modes), and multiplayer sync (delta compression, client prediction, conflict resolution).
How do I install building-mechanics?
Run npx skills add https://github.com/bbeierle12/skill-mcp-claude --skill building-mechanics in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/building-mechanics/ (personal) or .claude/skills/building-mechanics/ (project).
Which AI agents can use building-mechanics?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is building-mechanics safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains building-mechanics?
It is published by bbeierle12 in bbeierle12/skill-mcp-claude. It has 74 recorded installs.
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