const T = api.THREE; const root = new T.Group(); const materials = {}; function mat(color, glow = false) { const key = color + glow; return materials[key] || (materials[key] = api.toon(color, {glow})); } function mesh(geo, color, x, y, z, rx = 0, ry = 0, rz = 0, parent = root, glow = false) { const m = new T.Mesh(geo, mat(color, glow)); m.position.set(x, y, z); m.rotation.set(rx, ry, rz); parent.add(m); return m; } function box(w, h, d, color, x, y, z, rx = 0, ry = 0, rz = 0, parent = root) { return mesh(new T.BoxGeometry(w, h, d), color, x, y, z, rx, ry, rz, parent); } function ball(w, h, d, color, x, y, z, parent = root) { const m = mesh(new T.SphereGeometry(1, 14, 10), color, x, y, z, 0, 0, 0, parent); m.scale.set(w / 2, h / 2, d / 2); return m; } function tube(points, radius, color, parent = root) { const curve = new T.CatmullRomCurve3(points.map(p => new T.Vector3(...p))); return mesh(new T.TubeGeometry(curve, 24, radius, 7, false), color, 0, 0, 0, 0, 0, 0, parent); } function cone(r, h, color, x, y, z, rx = 0, ry = 0, rz = 0, parent = root, glow = false) { return mesh(new T.ConeGeometry(r, h, 6), color, x, y, z, rx, ry, rz, parent, glow); } let seed = 7413; function rand() { seed = (seed * 16807) % 2147483647; return (seed - 1) / 2147483646; } // An open-fronted cavern, with a floor that can be walked onto. box(31, 0.35, 29, "#795c88", 0, 0.05, 0); box(31, 14, 2.4, "#705078", 0, 7, -14); box(2.4, 14, 29, "#75567e", -15, 7, 0); box(2.4, 14, 29, "#75567e", 15, 7, 0); box(32, 1.8, 30, "#60456f", 0, 15.1, 0); for (let i = 0; i < 9; i++) { const x = -13 + i * 3.3; ball(5, 4.5 + rand() * 3, 3.2, i % 2 ? "#886793" : "#795984", x, 10 + rand() * 2, -12.5); cone(0.8 + rand() * 0.6, 2.2 + rand() * 2, "#705078", x, 13, -8 + rand() * 19, Math.PI); } for (let side of [-1, 1]) { for (let i = 0; i < 5; i++) { ball(3.2, 5 + rand() * 3, 5.5, i % 2 ? "#87618e" : "#785783", side * 13.7, 3.7, -10 + i * 5); } } // Huge, lumpy hill of treasure. ball(19, 4.1, 14, "#c99430", 0, 1.65, -1.2); ball(15, 4.1, 11, "#e4af3d", -0.5, 2.6, -1.6); ball(10.5, 3, 8, "#f2c450", 0.3, 3.5, -2); for (let i = 0; i < 135; i++) { const a = rand() * Math.PI * 2; const r = Math.sqrt(rand()); const x = Math.cos(a) * r * 9; const z = -1.3 + Math.sin(a) * r * 6.6; const y = 0.45 + 4.1 * Math.sqrt(Math.max(0, 1 - r * r)) + rand() * 0.25; const coin = mesh(new T.CylinderGeometry(0.25, 0.25, 0.075, 10), i % 3 === 0 ? "#ffe17a" : "#f4c84e", x, y, z, 0, rand() * 6.28, (rand() - 0.5) * 0.25); coin.name = "gold-coin"; } const jewelColors = ["#f08cc0", "#68d9d0", "#b683ed", "#f16f76", "#a9e6f0"]; for (let i = 0; i < 26; i++) { const a = rand() * Math.PI * 2, r = 0.35 + rand() * 0.65; const x = Math.cos(a) * r * 8.5, z = -1.2 + Math.sin(a) * r * 6; const y = 0.6 + 4 * Math.sqrt(Math.max(0, 1 - r * r)); const gem = mesh(new T.OctahedronGeometry(0.3 + rand() * 0.25, 0), jewelColors[i % jewelColors.length], x, y, z, rand(), rand(), rand()); gem.name = "treasure-jewel"; } // A sleeping dragon draped across the hoard. const dragon = new T.Group(); dragon.name = "sleeping-dragon"; root.add(dragon); ball(7.7, 4.2, 5.6, "#9b4f87", 0.4, 5.6, -1.8, dragon); ball(4.2, 2.6, 3.8, "#be729b", -2.4, 5, 0.1, dragon); ball(4.1, 3.1, 3.4, "#a6568c", -4.4, 5.1, 1.9, dragon); ball(3.2, 1.35, 2.3, "#c77c9f", -4.45, 4.45, 3.35, dragon); ball(0.35, 0.22, 0.18, "#4a273e", -5.15, 4.92, 4.35, dragon); ball(0.35, 0.22, 0.18, "#4a273e", -3.85, 4.92, 4.35, dragon); // Closed eyelids instead of open eyes. tube([[-5.55,5.55,3.25],[-5.25,5.42,3.38],[-4.92,5.48,3.28]], 0.095, "#3a2230", dragon); tube([[-4.02,5.48,3.28],[-3.7,5.42,3.38],[-3.4,5.55,3.25]], 0.095, "#3a2230", dragon); cone(0.45, 1.45, "#f6d695", -5.65, 6.75, 1.8, 0.25, 0, -0.4, dragon); cone(0.45, 1.45, "#f6d695", -3.25, 6.75, 1.8, 0.25, 0, 0.4, dragon); for (let i = 0; i < 6; i++) { cone(0.43 - i * 0.03, 0.9 + (i % 2) * 0.2, "#efbb84", -2.3 + i * 1.2, 7.45 - i * 0.12, -1.8, 0, 0, -0.15, dragon); } // Folded wings, with ink-dark ribs. const wing1 = ball(5.5, 1.1, 3.2, "#d17ca7", 0.9, 7.25, -1, dragon); wing1.rotation.y = -0.35; const wing2 = ball(4.6, 0.85, 2.3, "#bd6798", 1.2, 7.75, -1.35, dragon); wing2.rotation.y = 0.42; tube([[-1,7.55,-0.3],[0.5,7.95,-0.6],[2.6,7.65,-1.35]], 0.11, "#854776", dragon); tube([[0,7.72,-0.4],[1.5,7.85,-0.3],[3.1,7.35,-0.1]], 0.09, "#854776", dragon); for (const p of [[-1.6,4.4,1.15],[2.8,4.35,0.4],[2.4,4.35,-3.8]]) { ball(2.2, 1.3, 1.5, "#a6568c", p[0], p[1], p[2], dragon); for (let j = -1; j <= 1; j++) cone(0.16, 0.45, "#f6d695", p[0] + j * 0.5, p[1] - 0.17, p[2] + 0.8, Math.PI / 2, 0, 0, dragon); } tube([[3.3,5.15,-2],[5.7,4.7,-2.9],[7.1,3.8,-4.4],[7.5,3.2,-6.2],[6.4,3,-7]], 0.55, "#9b4f87", dragon); cone(0.6, 1.3, "#d17ca7", 6.15, 3, -7.1, 0, 0, 1.3, dragon); // Open chests with metal bands and loose coins. function chest(x, z, turn) { const g = new T.Group(); g.position.set(x, 0.35, z); g.rotation.y = turn; root.add(g); box(2.5, 0.25, 1.45, "#a35b3a", 0, 0.15, 0, 0, 0, 0, g); box(2.5, 0.95, 0.2, "#a35b3a", 0, 0.7, 0.67, 0, 0, 0, g); box(2.5, 0.95, 0.2, "#a35b3a", 0, 0.7, -0.67, 0, 0, 0, g); box(0.2, 0.95, 1.25, "#a35b3a", -1.15, 0.7, 0, 0, 0, 0, g); box(0.2, 0.95, 1.25, "#a35b3a", 1.15, 0.7, 0, 0, 0, 0, g); for (let s of [-0.75, 0.75]) box(0.14, 1.05, 0.24, "#f5ca60", s, 0.7, 0.72, 0, 0, 0, g); box(0.35, 0.38, 0.15, "#f8d778", 0, 0.8, 0.79, 0, 0, 0, g); const lid = new T.Group(); lid.position.set(0, 1.18, -0.72); lid.rotation.x = -1.02; g.add(lid); box(2.55, 0.22, 1.55, "#a35b3a", 0, 0, 0.76, 0, 0, 0, lid); for (let s of [-0.75, 0.75]) box(0.16, 0.26, 1.58, "#f5ca60", s, 0.02, 0.76, 0, 0, 0, lid); for (let i = 0; i < 9; i++) mesh(new T.CylinderGeometry(0.22, 0.22, 0.06, 10), "#ffe17a", (rand() - 0.5) * 1.8, 1.05 + rand() * 0.2, (rand() - 0.5) * 0.8, 0, rand() * 6, 0, g); mesh(new T.OctahedronGeometry(0.35), "#72ded5", 0.35, 1.35, 0, 0, 0.3, 0, g); } chest(-10.8, 6.1, -0.25); chest(8.8, -7.5, 0.5); // Crystal clusters along the walls and at the entrance. const crystalTips = []; function cluster(x, z, scale) { ball(3 * scale, 0.8 * scale, 2.2 * scale, "#71527d", x, 0.45 * scale, z); for (let i = 0; i < 5; i++) { const dx = (i - 2) * 0.48 * scale; const h = (1.5 + (i % 3) * 0.65) * scale; const c = i % 2 ? "#f08cc0" : "#80ebdd"; const shard = mesh(new T.ConeGeometry(0.4 * scale, h, 5), c, x + dx, h / 2 + 0.35 * scale, z + (i % 2) * 0.35 * scale, (i - 2) * 0.08, 0.2 * i, (i - 2) * -0.12, root, true); crystalTips.push(shard); } } cluster(-12.5, 9.5, 1.3); cluster(12.5, 1, 1.35); cluster(-12.3, -7.8, 1.2); cluster(11.8, -11, 1.1); for (let i = 0; i < 5; i++) { const x = -10 + i * 5; cone(0.45, 2.2, i % 2 ? "#f08cc0" : "#8de9df", x, 13.35, -8, Math.PI, 0, 0, root, true); } // A knight hiding behind a boulder, peeking around its left edge. ball(3.4, 2.65, 2.5, "#80638f", 10.4, 1.35, 8); ball(1.9, 1.3, 1.8, "#9678a1", 11.2, 0.7, 9); const knight = new T.Group(); knight.position.set(8.75, 0.25, 8.1); knight.name = "nervous-knight"; root.add(knight); ball(0.9, 1.15, 0.65, "#b9a3e8", 0, 1, 0, knight); box(0.32, 0.75, 0.38, "#8a6db5", -0.27, 0.38, 0, 0, 0, 0.12, knight); box(0.32, 0.75, 0.38, "#8a6db5", 0.27, 0.38, 0, 0, 0, -0.12, knight); ball(0.42, 0.22, 0.6, "#745b91", -0.27, 0.14, 0.18, knight); ball(0.42, 0.22, 0.6, "#745b91", 0.27, 0.14, 0.18, knight); const head = new T.Group(); head.position.set(-0.12, 1.85, 0.1); knight.add(head); ball(0.9, 0.95, 0.8, "#f2c9a0", 0, 0, 0, head); ball(1, 0.65, 0.85, "#b9a3e8", 0, 0.34, -0.03, head); box(1.1, 0.12, 0.95, "#8a6db5", 0, 0.16, 0.04, 0, 0, 0, head); for (let x of [-0.22, 0.22]) { ball(0.31, 0.35, 0.15, "#ffffff", x, -0.02, 0.39, head); ball(0.09, 0.1, 0.06, "#211421", x - 0.05, -0.03, 0.48, head); } tube([[-0.2,-0.31,0.39],[0,-0.27,0.45],[0.2,-0.31,0.39]], 0.035, "#3a2230", head); cone(0.18, 0.9, "#ef8a3c", 0, 0.85, -0.05, 0, 0, -0.4, head); ball(0.35, 0.75, 0.34, "#b9a3e8", -0.57, 1.15, 0.1, knight); ball(0.35, 0.75, 0.34, "#b9a3e8", 0.55, 1.15, 0.1, knight); ball(0.3, 0.3, 0.3, "#f2c9a0", -0.57, 0.82, 0.28, knight); ball(0.3, 0.3, 0.3, "#f2c9a0", 0.55, 0.82, 0.28, knight); api.place(root, {where: "ahead", distance: 27}, { id: "dragon-treasure-cavern", describe: "a sleeping dragon on a mountain of treasure in a crystal-lit cavern, with a nervous knight" }); // Smoke is a separate non-solid effect, aligned to the cavern's local coordinates. const smoke = new T.Group(); smoke.position.copy(root.position); smoke.quaternion.copy(root.quaternion); smoke.scale.copy(root.scale); const puffs = []; for (let nostril = 0; nostril < 2; nostril++) { for (let i = 0; i < 7; i++) { const puff = ball(0.34, 0.34, 0.34, i % 2 ? "#cab6d8" : "#e2d1e6", 0, 0, 0, smoke); puffs.push({mesh: puff, nostril, offset: i / 7}); } } api.add(smoke, {id: "dragon-nostril-smoke", describe: "wisps of smoke curling from the dragon's nostrils", solid: false}); api.onFrame((dt, t) => { dragon.position.y = Math.sin(t * 1.15) * 0.07; head.rotation.z = Math.sin(t * 3.3) * 0.045; knight.rotation.z = Math.sin(t * 5.2) * 0.012; for (const p of puffs) { const u = (t * 0.18 + p.offset) % 1; p.mesh.position.set( (p.nostril ? -3.85 : -5.15) + Math.sin(u * 8 + p.nostril) * u * 0.7, 4.92 + u * 2.9 + dragon.position.y, 4.36 + u * 0.35 + Math.cos(u * 8) * u * 0.35 ); const s = 0.5 + u * 1.35; p.mesh.scale.setScalar(s); } crystalTips.forEach((c, i) => { c.scale.x = 1 + 0.04 * Math.sin(t * 2 + i); c.scale.z = c.scale.x; }); }); api.say = "I made a crystal-lit cavern with a sleeping dragon sprawled over its treasure. A nervous knight peeks from behind a rock while smoke curls from the dragon’s nostrils."; api.suggest = ["Wake the dragon gently","Give the knight a glowing sword","Add a secret tunnel behind the treasure","Fill the cavern with drifting fireflies","Make the coins clink as the dragon snores"];