ARTICLE LIBRARY
Browse 64 published guides by system, difficulty, content type, or topic. Start with What Is Screeps? A Programming Strategy Game or follow the beginner sequence through How to Combine Your First Screeps Room Loop.
5 matching guides
Measure CPU with Game.cpu.getUsed() deltas, understand limit, tickLimit, and bucket, avoid Simulation-only conclusions, collect bounded samples, and gate optional work without hiding essential room logic.
Use state transitions, per-room Memory, repeat intervals, message truncation, priorities, and a 20-notification queue without confusing groupInterval minutes with game ticks or claiming external delivery success.
Read previous-tick room events, distinguish parsed arrays from raw JSON strings, validate event-specific data, preserve IDs when objects disappear, filter attacks on owned targets, and store bounded aggregates instead of unlimited history.
Draw current Creep state, target relationships, and task labels with RoomVisual while enforcing per-room switches, stable ordering, item limits, the 512,000-byte ceiling, cross-room boundaries, and a strict separation between visuals and action results.
Combine fixed-name Harvester1, Upgrader1, and Builder1 logic with spawning, safe target checks, state switches, return-code logging, and explicit beginner limits.
English articles are published only after source review, official API checks where applicable, JavaScript syntax review where code is present, duplicate-intent checks, and a final score of at least 96.
