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.
Call PathFinder.search() with the goal range your action actually needs, interpret path, ops, cost, and incomplete correctly, and reject partial paths before handing movement to a Creep.
Diagnose room.energyAvailable below energyCapacityAvailable by reconciling active Spawn and Extension Stores, holding one stable fill target, preserving transfer() results, and matching the processed Energy transfer on the next tick.
Find injured owned Creeps, rank lower hit ratios before missing hits and nearest-Tower range, require active owned Towers with TOWER_ENERGY_COST, save heal() results, avoid caching stale targets, and leave over-heal optimization to a later dispatcher.
Change, extend, or cancel one owned Screeps market order with nullable room fingerprints, conservative fee budgeting, one-writer request IDs, raw return codes, and next-tick state verification.
Treat ticksToDecay as the next decay pulse, reject unsafe path deadlines, preserve repair() results, explain the current-engine repair-before-decay boundary, and verify EVENT_REPAIR amount and Energy spent on the next tick.
Recover Tombstone and Ruin resources without chasing doomed targets: reject incomplete structure-aware paths, block closed hostile Ramparts, preserve target identity, and verify the processed withdraw amount on the next tick.
Measure one code section with Game.cpu.getUsed() deltas, compare equivalent server ticks, separate bucket context from profiling, and protect essential work before optional tasks.
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.
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.
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.
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.
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.