Screeps First Room: Find the Editor and Console
Find your first Screeps Room, code editor, and Console, then use read-only commands to identify visible Rooms, Spawns, Creeps, Sources, and the Controller.
TOPIC · 16 GUIDES
JavaScript Screeps guides
Focused English articles connected to javascript, organized with the same filters used by the main article library.
16 matching guides
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.
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 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.
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.
How to Use Flags as Reviewed Configuration Instead of Hidden Automation
Resolve exact Flag names from Game.flags, validate flag.memory fields, recover configured targets by ID before a deterministic local fallback, and report missing or stale configuration without mutating Flags.
How to Split Screeps Code into Modules Without Caching Stale Game Objects
Keep one module.exports.loop, export small role functions, validate module shapes, read current Game objects inside each tick, avoid module-scope world snapshots, and preserve diagnostics for missing roles and load failures.
How Screeps Memory Saves Creep Roles and Working State
Learn why ordinary variables do not preserve Screeps state, how creep.memory maps to Memory.creeps, what data belongs in Memory, and why object IDs are safer than live game objects.
How to Switch a Screeps Creep Between Getting Energy and Working
Build a stable two-phase working state from Store boundaries, keep the previous state at partial Energy, handle initialization and invalid capacity, and separate harvesting from Controller upgrading.
How to Restore a Screeps Target from Memory with Game.getObjectById()
Store an object ID and room name, recover the current object every tick, distinguish missing vision from a destroyed target, validate the restored type, and define an explicit invalidation policy.
How to Clean Dead Creep Memory Safely in Screeps
Compare Memory.creeps with Game.creeps, remove only confirmed dead-name entries, synchronize explicitly managed task indexes, summarize logs, and avoid TTL-based or global deletion mistakes.
How to Build a Safe Global Cache in Screeps
Use the global object as a disposable runtime cache, rebuild after global resets, version and expire entries, cache IDs and derived data instead of live game objects, and return cloned values to prevent accidental mutation.