Close Phase 2 — wire econ-sim into game server tick loop, expose price history and trade flows via implant insert panel, add economics debug console commands for runtime event injection and parameter mutation. New tickets: #821 (server tick integration), #822 (IPC bridge v21), #823 (debug command handler), #824 (economics insert panel), #825 (debug console econ commands). Existing: #810, #785, #811, #748, #814, #695. 11 tickets total across server, client, copy, planning. Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
116 lines
5.5 KiB
Markdown
116 lines
5.5 KiB
Markdown
# Sprint 34: Pulse — Joint Briefing
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**Goal:** Close Phase 2 — wire the economics simulation into the live game, expose price history and trade flows in the implant, and make the economy observable and tweakable at runtime.
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---
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## Pre-Sprint: Decisions and Schema
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No blocking pre-sprint decisions required. All economic architecture decisions (D-178 through D-188) are confirmed. #810 (event port) is the technical gate for the full chain — it must be the first ticket the server team starts.
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| Item | Owner | Status |
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|------|-------|--------|
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| D-178: Economic Model Architecture | decisions/economics.md | Confirmed |
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| D-179: Stability Acceptance Criteria | decisions/economics.md | Confirmed |
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| D-180: Event Input Port | decisions/economics.md | Confirmed |
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| D-181: Signal Vocabulary | decisions/economics.md | Confirmed |
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| ObserverSnapshot v21 schema | Server → client | New this sprint (#822) |
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---
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## Sprint Ticket Map
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### Server (sprint-34/server)
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```
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#810 Event port implementation
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→ #821 Integrate econ-sim into server tick loop
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→ #822 Expose economy state over IPC (ObserverSnapshot v21)
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→ #823 Economics debug command handler
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```
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### Client (sprint-34/client)
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```
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#785 Star map: system population + GDP (standalone)
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#822 (server, blocker) → #824 Economics insert panel
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#823 (server, blocker) → #825 Debug console econ commands
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```
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### Copy (sprint-34/copy)
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```
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#814 Rail infrastructure corporation gap (standalone)
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#695 Overheard conversations — 24 zone types (standalone, parallel)
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```
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### Planning (sprint-34/planning)
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```
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#811 Brand layer design (early sprint)
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#748 Phase 3 breakdown workshop (after server tickets in_progress)
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```
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---
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## Cross-Team Integration Points
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**ObserverSnapshot v21 (server → client)**
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- Server: `server/src/bridge/types.rs` — add `EconomySnapshot` struct, bump `PROTOCOL_VERSION` to 21
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- Client: `client/scripts/snapshot_handler.gd` — parse `economy_snapshot` field, route to economics panel
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- Coordination: Server team defines the struct; client team consumes it. Server team ships #822 first; client team builds #824 with placeholder data in the meantime.
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**Debug command flow (both teams)**
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- Server: `server/src/bridge/types.rs` — add `InjectEconEvent`, `SetEconParam`, `GetEconState` to `DebugCommandKind`
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- Client: `client/ui/debug_console.gd` — add `econ inject`, `econ param`, `econ inspect` command parsers
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- Coordination: Server team ships #823 before client team wires #825. Client team can build command parsing and help text independently; just gate the send path on #823 being merged.
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**Star map GDP (#785)**
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- Client-only ticket. Check whether `res://data/star_map_data.json` already includes `population` and `gdp` fields. If not, update `tooling/generate-star-map-data.py` to include them from `server/data/systems.db`. This is a self-contained warmup — complete before #824.
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---
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## Cascade Enforcement
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**No Phase 4 tickets.** This sprint closes Phase 2 and initiates Phase 3 planning via #748 and #811. The following are explicitly out of scope and must not be started, designed, or discussed:
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- Character creation (#618, #619, #694, #606)
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- Tycoon starting states (#615)
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- Bookmark system (#614)
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- NPC personality surface area (#621)
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- Apartment generator (#617, #681)
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- Any ticket under Phase 4 epic #749
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Phase 4 cannot start until Phase 3 delivers (Atlas of the Reach). Phase 3 planning workshop (#748) runs this sprint — but Phase 3 implementation tickets do not start until Sprint 35+.
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---
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## Sprint Completion Proof
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The sprint is done when a developer can do all three of the following in the running game:
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1. **Open the implant economics panel** — select any system, see live price data (price_current and price_trend for at least 6 commodities) updating in real time as the economy runs.
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2. **Trigger a supply shock from the debug console** — type `econ inject <system_id> shock 0.5 200`, observe the price_current values shift in the economics panel within a few ticks, then recover toward equilibrium over the next 200 ticks.
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3. **Mutate α from the debug console** — type `econ param alpha 0.01`, observe slower price adjustment in the panel; type `econ param alpha 0.06`, observe faster adjustment.
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None of the above require a character. The economics panel and debug console can be exercised from the main game loop without entering the simulation world — they operate via the IPC bridge on whatever player session is active.
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---
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## Test Plan
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**Phase alignment:** Sprint 34 is Phase 2 delivery infrastructure. Test focus is economic state correctness over IPC, not simulation model correctness (that was Sprint 33 / D-179 stability tests).
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| Test | Tier | Owner |
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|------|------|-------|
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| ObserverSnapshot v21 roundtrip — serialize/deserialize EconomySnapshot | Tier 1 (fixture) | Server |
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| EconStateQuery → economy_snapshot present in next snapshot | Tier 2 (bridge) | Server |
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| `econ inject` → DebugResponsePayload.success true + price shift observable | Tier 2 (bridge) | Server |
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| Economics insert panel renders with fixture EconomySnapshot | Tier 3 (client live) | Client |
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| Debug console parses `econ inject` without error | Tier 3 (client live) | Client |
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| Star map popup shows population + GDP fields | Tier 3 (client live) | Client |
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---
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## Open Questions
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None blocking implementation. One design question in-flight:
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- **Q: Brand layer architecture** (#811 planning) — not blocking Sprint 34 implementation work. Resolved by planning team this sprint; produces Phase 3 tickets for Sprint 35.
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