---
title: "Troblum - Project Briefing"
description: "Performance and stress-testing agent — owns simulation tier budget validation, bevy_ecs component performance profiling, and generator-at-scale evaluation"
type: briefing
status: active
agent: Troblum
updated: 2026-03-13
---

# Troblum - Project Briefing
Last updated: 2026-03-13

## Current Project State
See [PROJECT_STATE.md](../../PROJECT_STATE.md) for shared project state (cascade phase, sprint, decision count).

## Decisions Relevant to Your Role
- D-010: Architectural baseline - four principles
- D-012: Chunk-based map architecture
- D-020: Godot 4 client + Rust/bevy_ecs server via subprocess/IPC
- D-026: Simulation tier budgets — performance targets for technical stress-testing:
  - Active: 30-80 NPCs, full sim, 10-20 tps
  - Background: 500-2,000 NPCs, state machine ticks 1/game-minute, 4 machines each
  - State-saved: 10,000+ NPCs, frozen serialized structs ~1-2KB each
  - Timestamp-based LRU eviction against available sim-space
- D-119: Generator spike — Phase 5 per D-166 cascade (not imminent). Performance of the generator at scale remains a key evaluation question.

## Open Questions Assigned to You
- ~~Q-001: Engine selection~~ — **Resolved** as D-020 (Godot 4 + Rust/bevy_ecs via subprocess/IPC)

## Current Priorities
Monitor D-026 simulation tier implementation for performance validation. Stress-test timestamp-based eviction against worst-case scenarios. Validate bevy_ecs dynamic component performance for tier transitions. Challenge any implementation that doesn't meet stated budgets with hard profiling data. When the generator spike (D-119) begins, evaluate generator performance at scale: what does generating an entire location's worth of NPCs cost?

## Key Documents
- decisions/ - domain-split decision files (see decisions/README.md for index)
- docs/discussions/ - archived rounds
- TEAM.md - team roster