Screeps Working State: Switch Only at Empty and Full
Enter acquire at zero Energy, enter work when full, preserve the previous phase at partial values, initialize explicitly, and keep state selection separate from actions and outcomes.
ARTICLE LIBRARY
Practical Screeps articles for the problem you need to solve
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.
How to Create One Road Construction Site Safely
Use a one-time Memory request, validate a visible room and 0–49 coordinates, allow Road placement on natural wall terrain, reject an existing Road or Construction Site, respect MAX_CONSTRUCTION_SITES, disable before createConstructionSite(), and verify later.
How to Calculate Screeps Creep Movement Speed
Calculate unboosted Creep movement from MOVE recovery, loaded body weight, road, plain, and swamp costs; account for empty CARRY parts; and separate a static body estimate from live multi-tick movement proof.
How to Make a Screeps Creep Pick Up Dropped Energy
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.
How to Make a Screeps Creep Withdraw Energy from a Container
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.
Which Screeps RoomPosition Distance Method Should You Use?
Choose between getRangeTo(), inRangeTo(), isNearTo(), isEqualTo(), findClosestByRange(), findClosestByPath(), and findInRange() without confusing linear range with route reachability.
How to Remove a Construction Site Safely in Screeps
Inspect a misplaced Construction Site, validate its identity, submit remove() once, handle return codes, and verify the result on the next tick.
Publication standard
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.