game-development

Choose based on your project needs: Godot for 2D and open source, Unity for cross-platform and large teams, Unreal for AAA 3D visuals. The pc-games sub-skill provides a decision tree comparing Unity 6, Godot 4, and Unreal 5 across learning curve, cost, and team size.

Use Phaser 4 for full-featured 2D games, PixiJS 8 for 2D rendering and UI, Three.js for lightweight 3D, and Babylon.js 7 for full 3D engine features including XR. The web-games sub-skill includes a decision tree and WebGPU adoption guidance.

FSM suits simple AI with 3-5 predictable states, Behavior Trees fit medium-complexity modular designer-friendly logic, and GOAP handles high-complexity emergent planning-based behavior. Start with a State Machine and escalate only when behavior demands it.

Use teleport locomotion and snap turning instead of smooth movement, maintain 90 FPS minimum, avoid camera shake, and add comfort vignettes during movement. The vr-ar sub-skill details comfort settings including seated modes and height calibration.

Never trust the client; the server must be the authoritative source of truth. The server validates hits, movement, and inventory to prevent speed hacks, aimbots, and item duplication, while clients use prediction and interpolation for responsiveness.

60 FPS gives a 16.67ms frame budget: roughly 1ms input, 3ms physics, 2ms AI, 4ms game logic, 5ms rendering, and 1.67ms buffer. Optimize in priority order: algorithms first, then batching, pooling, LOD, and culling.