123 lines
5.5 KiB
Markdown
123 lines
5.5 KiB
Markdown
# Epic 3 - Crafting, Gathering, and Itemization Economy
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## Source Anchors
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- Master epic reference: [`neon_sprawl_vision.plan.md`](../../../neon_sprawl_vision.plan.md) — Core Epic Map, System Modules Epic 3
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- Related modules: E3.M1, E3.M2, E3.M3, E3.M4, E3.M5
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## Ownership and success (Level 1)
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- **Ownership focus:** Economy Design + Content Engineering + **Client presentation (Godot)**
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- **Success criteria:** Crafting is a primary progression lane with healthy supply-demand loops and consistent item relevance — **playable in the client**, not server/Bruno-only proof.
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## Objective
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Implement gathering from world nodes, item/inventory representation, recipe execution, and later durability/sinks and economy policy so players can complete gather-refine-craft-use loops that matter for combat and quests.
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## Module Breakdown
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### E3.M1 - ResourceNodeAndGatherLoop
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- Responsibility: Node spawning, gather interaction, resource output events.
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- Key contracts: `ResourceNodeDef`, `GatherResult`, `ResourceYieldTable`
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- Dependencies: E1.M3, E2.M2
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- Stage target: Prototype
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### E3.M2 - RefinementAndRecipeExecution
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- Responsibility: Raw-to-refined processing and recipe crafting execution pipeline.
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- Key contracts: `RecipeDef`, `CraftRequest`, `CraftResult`
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- Dependencies: E3.M1, E3.M3
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- Stage target: Prototype
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### E3.M3 - ItemizationAndInventorySchema
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- Responsibility: Item definitions, rarity/quality fields, stackability and equipment metadata.
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- Key contracts: `ItemDef`, `ItemInstance`, `InventorySlot`
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- Dependencies: None
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- Stage target: Prototype
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### E3.M4 - SinkAndDurabilityLifecycle
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- Responsibility: Item decay/consumption/repair sinks that sustain market demand.
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- Key contracts: `DurabilityState`, `ItemSinkEvent`, `RepairCostRule`
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- Dependencies: E3.M3, E8.M3
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- Stage target: Pre-production
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### E3.M5 - EconomyBalancePolicy
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- Responsibility: Faucet/sink parameter set and guardrails for inflation/deflation.
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- Key contracts: `EconomyPolicy`, `PriceBandRule`, `FaucetSinkRatio`
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- Dependencies: E3.M4, E9.M2
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- Stage target: Pre-production
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## Implementation Slices (Backlog-Ready)
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### Slice 1 - Items and inventory MVP
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- Scope: E3.M3 with equipment/consumable slots sufficient for prototype loadouts and quests.
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- Dependencies: None
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- Acceptance criteria:
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- Craft outputs and quest rewards land in inventory deterministically.
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- Item schema versioned for forward-compatible migrations.
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- Telemetry hooks: `item_created`, `inventory_full` / transfer failures.
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<a id="epic-3-slice-2"></a>
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### Slice 2 - Gather nodes and outputs
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- Scope: E3.M1 with 4-6 node types and yield tables; awards crafting/gathering XP via E2.M2.
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- Dependencies: E3.M3, E1.M3, E2.M2
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- Acceptance criteria:
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- Full gather interaction in prototype region without dupes or free resources.
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- Telemetry hooks: `resource_gathered`, `gather_node_depleted`.
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<a id="epic-3-slice-3"></a>
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### Slice 3 - Recipes and crafting pipeline
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- Scope: E3.M2 with 8-12 starter recipes per prototype minimums.
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- Dependencies: E3.M1, E3.M3
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- Acceptance criteria:
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- Player completes gather to refine to usable item used in combat or quest.
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- Telemetry hooks: `item_crafted`, `craft_failed` with reason, time-to-first-craft.
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<a id="epic-3-slice-5"></a>
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### Slice 5 - Client economy integration (prototype)
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- Scope: Godot clients + HUD for **E3.M3** inventory, **E3.M1** gather feedback, **E3.M2** craft UI; playable **gather → refine → make** session in the client (vision prototype gates).
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- Dependencies: Slice 1–3 server APIs landed ([NEO-55](https://linear.app/neon-sprawl/issue/NEO-55), [NEO-63](https://linear.app/neon-sprawl/issue/NEO-63), [NEO-70](https://linear.app/neon-sprawl/issue/NEO-70)); [E2.M2](https://linear.app/neon-sprawl/issue/NEO-37) skill-progression GET for XP visibility.
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- Acceptance criteria:
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- Inventory HUD reflects server state after gather and craft.
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- Player completes **gather → refine → usable item** in Godot without Bruno.
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- **Salvage** / **refine** skill progression visible after gather/craft (Epic 2 Slice 3 integration AC).
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- Telemetry hooks: reuse Slice 1–3 server hook sites; client dev **`print`** / HUD feedback only until E9.M1 ingest.
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**Linear backlog:** [E3S5-client-prototype-backlog.md](../../plans/E3S5-client-prototype-backlog.md) — [NEO-72](https://linear.app/neon-sprawl/issue/NEO-72) → [NEO-75](https://linear.app/neon-sprawl/issue/NEO-75).
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**Status:** Slice 5 client capstone landed — [NEO-75](../../manual-qa/NEO-75.md) manual QA; NEO-72→NEO-75 complete; prototype gather→craft loop playable in Godot (not Bruno-only).
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<a id="epic-3-slice-4"></a>
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### Slice 4 - Sinks and economy policy (pre-production)
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- Scope: E3.M4 + E3.M5 with tuning hooks and validation against outliers.
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- Dependencies: E8.M3 (market settlement optional), E9.M2
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- Acceptance criteria:
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- At least one durable sink is live; policy alerts on faucet/sink ratio breaches.
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- Telemetry hooks: `item_sink`, `repair_performed`, economy KPI aggregates.
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## Risks and Mitigations
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- Risk: Crafting bypassed by drops or NPC vendors.
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- Mitigation: Prototype quest requires crafted item; monitor gather-to-craft conversion.
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- Risk: Exploit duplication or negative stacks.
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- Mitigation: Server-authoritative craft and inventory; integrity signals via E9.M4.
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## Definition of Done
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- Prototype gather-craft loop meets plan pass/fail gates **in the Godot client** (Slice 5), not Bruno-only.
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- Slices 1–3 + Slice 5 together satisfy [vision prototype in-scope features](../../../neon_sprawl_vision.plan.md) for crafting loop and progression visibility.
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- Pre-production adds sinks and policy with dashboard visibility (Slice 4).
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