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.
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.
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.
Plan multiple same-room Link sends with shared target-capacity reservations, submit each source once, and verify exact source and target IDs in the next tick's transfer events.
Keep a valid Source identity, search only when reassignment is needed, reject incomplete PathFinder results, rank complete paths deterministically, and verify the selected harvest event.
Coordinate one shared Storage withdrawal budget and target capacity map, record only accepted withdraw or transfer calls, and verify the exact source-target event on the next tick.
Filter FIND_DROPPED_RESOURCES for Energy, rank valid piles by collectible amount and path length, handle decay and changing targets, and inspect pickup() and movement results.
Find a Container that currently holds Energy, check the Creep's free capacity, call withdraw(), handle range and return codes, and keep the delivery task outside this focused guide.
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.