Screeps Global Cache: Rebuildable Data Across Runtime Ticks
Cache derived IDs and plain data in global, rebuild after resets, invalidate with explicit versions, and keep callers correct when the cache is missing or stale.
TOPIC · 20 GUIDES
JavaScript Screeps guides
Focused English articles connected to javascript, organized with the same filters used by the main article library.
Screeps Modules: One Main Loop, Small Contracts, Fresh Tick Data
Keep one main loop, export small functions, pass current game objects into modules, validate role contracts once per runtime, isolate per-Creep failures, and keep durable state out of module scope.
Screeps RawMemory Segments: Request, Read, and Write Across Ticks
Request active Segment IDs once, read them on a later tick, distinguish unavailable from empty, validate versioned JSON, and write only after a successful read.
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.
Screeps Creep Roles: Harvester, Upgrader, and Builder
Learn why Harvester, Upgrader, and Builder are player-defined responsibilities, how roles differ from body parts, and why a Creep name does not create behavior.
Screeps spawnCreep(): Create Your First Creep
Use dryRun to validate a WORK-CARRY-MOVE body, submit one safe spawnCreep() request, read its return code, and verify the new Creep across later ticks.
Screeps Ticks and Game Loop: Why Your Code Runs Repeatedly
Understand a Screeps tick, Game.time, and module.exports.loop, then run safe observations that show why actions and state changes appear across later ticks.
What Is Screeps? A Programming Strategy Game
Learn what Screeps is, how JavaScript controls its persistent world, and how Rooms, Creeps, Sources, Spawns, and Controllers work together for new players.