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.
7 matching guides
Use an explicit one-time Memory request, confirmation phrase, owned Controller checks, safeMode, safeModeAvailable, safeModeCooldown and upgradeBlocked preflight, disable before activateSafeMode(), save the return code, and verify later state.
Bind confirmation to target room and coordinates, recover an owned active Nuker by ID, check cooldown, NUKE_RANGE, Energy and Ghodium capacities, disable before launchNuke(), save the return code, and verify later evidence without requiring target-room visibility.
Validate the Spawn, Creep name, body, Energy, Memory, and optional structures; run dryRun first; preserve the real spawnCreep() result; and map each error code to a concrete fix.
Identify which action returned ERR_NOT_IN_RANGE, use its real range, save the moveTo() result separately, and retry the original action on a later tick instead of assuming movement is immediate.
Distinguish an accepted movement order from later position change, validate the target and active MOVE parts, inspect fatigue and range, track roomName:x:y across ticks, and diagnose traffic, cached paths, and overwritten movement orders.
Distinguish ERR_NO_PATH, ERR_NOT_FOUND and PathFinder incomplete results; validate target range; correct CostMatrix walkability; inspect callbacks, maxOps, maxRooms and cross-room routes; and separate temporary traffic from a failed search.
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.
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.
