Screeps: Clean Dead Creep Memory Safely
Clean stale Memory.creeps entries by comparing them with Game.creeps. Delete only confirmed dead names and keep custom task indexes in sync.
TOPIC · 20 GUIDES
JavaScript Screeps guides
Focused English articles connected to javascript, organized with the same filters used by the main article library.
Screeps RoomVisual: Transparent Fills, Labels, and Paths
Use fill: 'transparent' for unfilled RoomVisual circles and rectangles, then add debug labels and target paths without confusing visuals with game results.
Screeps Game.notify(): Send Rate-Limited Alerts Safely
Call Game.notify(), use groupInterval and simple Memory incident state to avoid repeated alerts, preserve the checked engine result, and keep scheduling separate from external email delivery.
Screeps CPU Bucket Degradation: Protect Critical Tasks and Recover Gradually
Build a four-mode Screeps CPU degradation scheduler with hysteresis, consecutive-tick confirmation, critical-first task tiers, stable staggering, CPU headroom guards, and gradual recovery.
Screeps First Room: Find the Editor and Console
Open a Screeps Room, switch to the code editor and player Console, then use read-only checks to match exact Room, Spawn, Creep, Source, and Controller data.
Screeps InterShardMemory: Versioned Cross-Shard State Without Remote Writes
Publish versioned shard-owned channels, validate remote strings, enforce a conservative UTF-8 project budget, detect writer restarts and revision regressions, and measure freshness with local observation windows.
Screeps Memory: Persistent State, Heap Cache, and Creep Data
Distinguish local variables, disposable heap cache, and persistent Memory; initialize Creep state safely; store JSON-compatible values; and recover current game objects from IDs.
Screeps RawMemory Foreign Segment: Publish and Read Public Segments Safely
Publish versioned public RawMemory segments, request one foreign segment for the next tick, validate untrusted JSON, rotate subscriptions, and detect stream changes without confusing local, cross-shard, and foreign storage.
Screeps Room Error Isolation: Keep Other Rooms Running
Catch JavaScript exceptions at room or subsystem boundaries, retain bounded rate-limited evidence, pause repeatedly failing optional work, and retry after cooldown without confusing API return codes or CPU termination with exceptions.
Screeps First Room Code: A Small Loop You Can Verify
Combine three fixed beginner roles in one small loop, submit one validated Spawn request, keep Energy phases stable, expose failure statuses, and verify accepted commands on later ticks.
Screeps Flags: Bind Configuration to Room and Target Identity
Resolve an exact Flag, validate its schema, bind saved object IDs to the Flag room and expected type, make fallback an explicit policy, and report configuration drift without mutating the Flag.
Screeps Game.getObjectById(): Resolve Saved Targets Safely
Save an ID with room and kind metadata, return explicit invalid, no-vision, missing, wrong-type, and ready states, and keep restoration separate from reselection and actions.