Proof of Concept (Phase 1A/1B)

A zero-cost plan for something beautiful to show: a small village inside the Lumen block, one fight, the light cycle with fireflies and lanterns, and an alchemy bench. Built by the owner and the AI assistant (which models in Blender 4.2 via MCP, programs and documents; 12), using only free tools and assets under a recorded free license. Follows 06 and 00: company and legal opinion only afterward; no token, NFT, sale or airdrop with real value before that.

It is: a 3–5 min video and a local playable build that show the light and weather (02, 21), first-person combat (17), the living village at dusk and at night, alchemy (22) and a measured performance budget. It is not: an MMO, network, economy between players, a large world, VR on a headset, or sales material.

1. Scope

1.1 The village (working name: Pé-de-Lumen)

~150 × 150 m built, in a surrounding area of ~500 × 500 m (06). Ten enterable buildings (10), all from the same half-timber and stone kit:

Plus: square with a well, stone bridge over a stream, fences, clotheslines, street lanterns, vegetable garden (1B), grove at the edge and a firefly meadow. No city suspended in the trees in the PoC.

1.2 One fight scenario: "the dusk horde"

The bell rings at nightfall; 20 weak enemies of a single type (Straw Shadows: hay and rags, easy to model and animate) come out of the abandoned house and the fields in waves of 5–7, and then 1 elite with a directional parry (17; weak enemies have no parry, 00 F1). One class with 6 skills, a melee weapon, a light spell (Arcane/Elemental, 18) and the lantern (drives off weak enemies, reveals the elite). Physical actions already designed for VR (03). Loot with affixes from a simple table (3–4 items, 2 affixes). Telemetry to file for the metrics in section 8.

1.3 Day, night, fireflies and lanterns

• Five times of day in 20 real minutes: the PoC deliberately differs from the game, whose day lasts 2 h 50 min (04, 29); the long duration is not the focus here. With a button to advance the time for testing and filming.
• Sun and moon as moving directional lights, sky, clouds, volumetric fog and rain as a weather state (05).
• Lanterns and windows are emissives that light up in sequence at dusk; at most 4–6 real dynamic lights near the player (05).
• Fireflies (Niagara): appear at nightfall without rain in the meadow, by the stream and in the garden, flee from the lantern's strong light, and one can be caught with a jar (becomes an ingredient and decorative light) (21). Priority of the phase.
• Sound of the place before music: crickets, bell, wind, water, fireplace.

1.4 One alchemy bench

A subset of 22: 3 essences (firefly light, earth from the garden herb, dew water) and 3 processes (grind, boil, filter). The player physically places the ingredients and stirs the cauldron; 5–6 readable results (healing, portable light, ink) show free combination without the scope of the whole system.

1.5 Phase 1B

One NPC shop, one garden (plant → harvest → cook → sell) and one gathering activity (herb, fireflies), all against NPCs (06).

2. Tools and versions

Each tool and version goes in FERRAMENTAS.md in the assets repository.

3. Hardware and what it implies

The UE5 documentation lists 32 GB of RAM and 8 GB of VRAM as requirements (official doc); we have half of both. It works with discipline: UE and Blender never open together with a heavy scene, scene in sublevels, local shader cache. There is no headset: the VR profile is measured by simulation (section 5).

4. Free assets and sources

4.1 Licenses (consulted on October 26, 2026; recheck on the download day)

4.2 Mandatory record

assets/LICENCAS.csv: id, name, source, URL, license, date, version, use, author, derived?, note. An asset without a row does not enter the scene. This is what allows asking the lawyer later whether something can become an NFT (34 §10).

4.3 Asset table

5. Performance budget

Goals from 06/00 T2: 60 fps on the full PC profile at all times of day and with rain; 90 fps on reduced VR. The 4 GB RX 6500 XT is the card that 05 cites as a "mid GPU" at the lower limit, so the result is the most valuable data of the PoC. Values below are proposals, to adjust in week 2.

Measure with stat unit, stat gpu, stat streaming, Unreal Insights and Radeon GPU Profiler, in a table per time of day and with rain. The VR profile is measured by rendering on screen at ~4.6 Mpx (sum of both eyes) and the VR lighting; if it does not hit 90 fps on this GPU, that is data, not failure: an entry-level card is not the VR target.

6. Schedule

Assumptions: 1 part-time person (~15–20 h/week) with the AI modeling, programming and documenting. 05 estimates 3–6 months; here 20 weeks (~5 months) plus 4 of slack. It is an estimate, not a commitment; first re-estimate at the end of week 4.

Most fragile: weeks 5–8 (art volume), 13–14 (combat code and feel) and 10–11 (light and particles on 4 GB). If week 4 shows half the pace, cut scope (6 buildings instead of 10, no rain, one enemy) before stretching the deadline.

7. What to film

1080p (or 1440p with TSR), 30 fps; Movie Render Queue for trailer shots, OBS for real gameplay capture.

1. Early morning: low fog, first firefly, crickets.
2. Dawn: rays between trees, bakery smoke, bell in the distance.
3. Aerial shot of the village by day (Sequencer camera, trailer only).
4. Tavern: fireplace, amber light, golden dust, footsteps on wood.
5. Alchemy: hand catching the firefly in the jar, the bench, the cauldron changing color.
6. Dusk: lanterns lighting one by one, bell, cat in the window.
7. Rain: drops on the well, reflection of the windows.
8. Blue night on the bridge: moon, lit windows, cold × warm contrast (the reference, 01, 02).
9. The bell and the horde coming out of the fields; the lantern drives them away.
10. First-person combat: 4–5 readable strikes, light spell, impact and particles.
11. The elite: parry, opening, final blow, loot with glow and affixes.
12. Closing: dawn in the square, the player at the well with the lantern, title Yvaldis.

Long video: the same shots, a time-lapse of the 20 min cycle and 1 min of making of (Blender → UE). Plus 4–6 still captures for posters. No third-party music without a license; CC-BY credits, if any, at the end; nothing from the reference frames.

8. Exit criteria (from 06)

Phase 1A (values marked "proposal" are fixed at the first test):

Phase 1B: the plant → cook → sell cycle is understood and fun without a long tutorial (proposal: 8 of 10 testers complete it without asking).

General: the two videos, complete LICENCAS.csv, performance table and an honest opinion on whether the agent's visual quality is enough or a human artist is needed (12). Only then does the owner decide on the company and legal opinion (00). Testers are trusted people on varied PCs, with simple consent and telemetry without personal data (34 §7).

9. Risks (4 GB GPU in focus)

10. After the PoC

The modular kit, first person and measurements serve Phase 2 (06), where network and the validations of 34 §4 come in. No company, token, sale or NFT enters. Hiring an artist, opening a company and consulting a lawyer (34 §10) is the owner's decision, with the exit report in hand.