kitajima2910

Expert in building 3D experiences for the web - Three.js, React Three Fiber, Spline, WebGL, and interactive 3D scenes. Covers product configurators, 3D portfolios, immersive websites, and bringing depth to web experiences. Use when: 3D website, three.js, WebGL, react three fiber, 3D experience.

Game art principles — art style, color theory, animation principles, asset pipeline

Game design principles — core loop, GDD, player psychology, difficulty balancing, progression

Orchestrator game — route to implementation skill (pxhopencode) + principle-based sub-skill (agent-skills-hub)

Mobile game principles — touch input, battery, thermal, app stores, monetization

Multiplayer game principles — networking architecture, synchronization, security, matchmaking

PC/Console game principles — engine selection, Steam integration, controller, optimization

VR/AR development principles — comfort, interaction, performance, spatial design

AI Agent framework — tool registry, multi-step reasoning, memory, rate control. Không infinite loop, tự động timeout.

Tích hợp LLM production — chat, streaming SSE, function calling, cost tracking, retry, fallback. Không memory leak, tự động reconnect.

Production AI — caching, rate limit, fallback model, monitoring, graceful degradation. Không crash khi API down.

Prompt engineering production — template system, versioning, A/B test, injection defense, cost-aware prompting.

RAG pipeline production — ingestion, chunking chiến lược, embedding, hybrid search, rerank. Không index trùng, search dưới 200ms.

Game 2D với Phaser 3 — player, enemy, bullet pool, tilemap, HUD, animation. 60 FPS, object pool cho đạn/enemy.

Game 3D với Three.js — lighting, FPS/TPS camera, shooting, enemy AI, LOD, instancing. 60 FPS, draw calls < 200.

Free game assets + auto-download. 2D sprites, 3D models, 2.5D tiles, sounds, fonts. Animation-ready — idle/run/jump/attack/hurt/death states.