The glass board: a game drawn as three sheets of tinted glass on four posts with figures standing on them, in three.js, taking the same taps as the flat boards, shown only to a browser let in by a word

Fifteen figures in static/figures, one per kind, made to docs/figures-brief.md:
a round base, a livery material the view recolours per side, and a base
material left alone. The view loads three.js and the figures only when it
is opened. It plays a move as a walk and a capture as a sink into the glass,
dims a piece a Basilisk holds, marks the last move, the targets and a King
in check, and lets a tap reach a figure or a marked square through the
glass above it. Three cameras: from the corner, from the player's seat,
from above. The table and the told game offer it behind the gate in
src/lib/glass.svelte.ts, which opens for a browser that visits with
?glass=<word> whose hash it keeps.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CCLa2PaEeCj8njQZSWGqHx

docs/figures-brief.md

@@ -0,0 +1,95 @@
+# Figures for Wyrm: a brief for a 3D model generator
+
+Wyrm is a browser rebuild of Gary Gygax's 1985 Dragonchess: three boards of
+twelve by eight stacked one above the other, the air, the land and the
+underworld, with 42 pieces a side in fifteen kinds. The pieces are to be
+figures standing on round bases, in the manner of painted tabletop
+miniatures, so that a game can be drawn as a three-level glass board seen
+from a three-quarter view above.
+
+## What to make
+
+Fifteen figures, one per kind, each delivered as a single glTF binary
+(`.glb`) with these properties:
+
+- Y up, metres, the base centred on the origin and resting on y = 0.
+- A round base 1.0 unit across and 0.1 high under every figure. The figure
+  may overhang the base (wings, tails) but never below it.
+- Height by station: Warriors, Sylphs and Dwarves about 1.6 units tall from
+  the base; the middle kinds about 2.0; the Dragon, Griffon, Oliphant,
+  Elemental and Basilisk may reach 2.6, wingspan up to 2.4.
+- At most 8,000 triangles a figure, 4,000 for the Warrior, Sylph and Dwarf,
+  since there are twelve or six of each on the board at once.
+- Two materials only: `livery` for everything that takes the side's colour
+  (cloth, wings, scales, paint) and `base` for the base and anything
+  neutral (steel, wood, stone, skin). The game recolours `livery` for Gold
+  and Scarlet; do not bake the side colour in. One 1024 texture set per
+  material, PBR (base colour, metallic-roughness, normal).
+- One still pose, readable in silhouette from a three-quarter view above
+  and from directly above. No pose that lies flat or leans off the base.
+- Style: painted miniature, not photoreal. Clean forms, exaggerated
+  silhouettes, little fine detail that would vanish at 40 pixels tall.
+  Mixed fantasy, medieval and classical, as the pieces below describe.
+  No text, logos or heraldry.
+
+## The fifteen pieces
+
+The air (Gygax colours the board light blue and white):
+
+1. **Sylph.** A slight winged spirit of the wind, androgynous, barefoot,
+   feathered wings raised, carrying nothing or a short spear. Light and
+   quick; the foot soldier of the air.
+2. **Griffon.** Half eagle and half lion, wings spread, forelegs raised as
+   it lands. Big, the heaviest flier after the Dragon.
+3. **Dragon.** The great wyrm of the sky, the piece the game is named for.
+   Wings half spread, long neck, head turned down as if to strike at the
+   board beneath. The tallest piece on the board.
+
+The land (light green and amber):
+
+4. **Warrior.** A spearman of the levy, shield on the arm, spear upright.
+   Plain, sturdy, the common soldier; twelve of these stand in a wall.
+5. **Oliphant.** A war elephant with a small howdah, tusks forward. Broad
+   and heavy, a rook with tusks.
+6. **Unicorn.** A unicorn rearing, no rider. The knight of the land.
+7. **Hero.** A champion in mail with a long sword raised two-handed. Bold
+   stance, a figure that leaps.
+8. **Thief.** A hooded figure in dark cloth, crouched, a dagger in each
+   hand, looking sideways.
+9. **Cleric.** A robed priest with a staff topped by a sun or sigil, calm,
+   upright. The one piece at home on every board.
+10. **Mage.** A wizard in long robes, staff in one hand, the other raised
+    with a flame or light. The queen of the land.
+11. **King.** A crowned king in a long cloak with a sceptre, standing. Not
+    the tallest piece, but the most dressed.
+12. **Paladin.** A knight in full plate on foot, visor down, lance or sword
+    and a tall shield. The holy knight.
+
+The underworld (red and brown):
+
+13. **Dwarf.** A squat miner with a pick over the shoulder and a lamp on the
+    helmet, bearded, broad. Six to a side.
+14. **Basilisk.** A great serpent reared up on its coils, crested, mouth
+    open, looking up as if its gaze reaches the board above. Menacing and
+    low.
+15. **Elemental.** A bruiser of living stone, a hulking earth elemental,
+    arms raised, no face to speak of. The one heavy thing in the
+    underworld.
+
+## Try two first
+
+Make the Warrior and the Dragon before the rest. The Warrior shows whether
+the model can keep a figure simple and readable at a small size; the Dragon
+shows whether it can carry a big silhouette with wings inside the triangle
+budget. If both pass, make the remaining thirteen to the same style.
+
+## How they will be judged
+
+- Does each figure read as its kind from a three-quarter view above, at
+  about 40 pixels tall, against the others on the same board?
+- Do the twelve Warriors, six Sylphs and six Dwarves differ from each
+  other's kinds at a glance?
+- Do the two materials split cleanly, so that recolouring `livery` to gold
+  and to scarlet gives two armies and nothing else changes?
+- Does the file open in a standard glTF viewer with no missing textures,
+  within the triangle budget, standing on its base at the origin?