ARTICLE LIBRARY
Browse 81 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.
Publish versioned shard-owned channels, validate remote strings, enforce a conservative UTF-8 project budget, detect writer restarts and revision regressions, and measure freshness with local observation windows.
Distinguish local variables, disposable heap cache, and persistent Memory; initialize Creep state safely; store JSON-compatible values; and recover current game objects from IDs.
Verify movement over later ticks, then isolate fatigue, repeated movement intents, traffic, cached paths, room edges, and impossible stop ranges.
Publish versioned public RawMemory segments, request one foreign segment for the next tick, validate untrusted JSON, rotate subscriptions, and detect stream changes without confusing local, cross-shard, and foreign storage.
Capture the actual Spawn request, interpret each documented return code, separate dryRun from the final submission, and verify scheduled spawning across later ticks.
Centralize Creep demand, deduplicate stable request keys, rank emergency and replacement work, reserve shared room Energy locally, assign each idle Spawn once, and verify accepted names on later ticks.
Catch JavaScript exceptions at room or subsystem boundaries, retain bounded rate-limited evidence, pause repeatedly failing optional work, and retry after cooldown without confusing API return codes or CPU termination with exceptions.
Distinguish general, limited, and read-only Stores; interpret resource arguments, zero and null correctly; handle Lab and specialized capacities; and calculate safe withdraw and transfer amounts.
Freeze one reviewed order revision, reserve the creation fee and account mutation slot, call createOrder once, and verify the exact new order ID in the next account snapshot.
Freeze one reviewed deal revision, reserve both an account deal slot and the exact Terminal, submit once, and verify the new transaction ID and actual partial or full amount next tick.
Validate one fixed anchor against Controller range 3 and Link range 1, recover the exact owned Controller Link, diagnose Energy and active body parts, preserve move, withdraw, and upgrade return codes, and verify later position, Store, or event evidence.
Route every Safe Mode request through one final per-tick dispatcher, bind the exact Controller ID, disable the request before activateSafeMode(), and verify activation consumption on the next tick.
English articles are published only after source review, official API checks where applicable, JavaScript syntax review where code is present, duplicate-intent and link checks, and editorial review. Publication does not imply Console or multi-tick live-room verification; those evidence states remain separate in each guide. Review the verification method.