const T = api.THREE; const px = api.player.x, pz = api.player.z; const dir = new T.Vector3(); api.camera.getWorldDirection(dir); dir.y = 0; if (dir.lengthSq() < 0.001) dir.set(0, 0, -1); dir.normalize(); const angle = Math.atan2(dir.x, dir.z); const groundY = api.groundHeight(px, pz); api.world({ sky: "#211632", haze: "#382345", shadow: "#4a3066", ink: "#3a2230" }); let seed = 17439; function rand() { seed = (seed * 1664525 + 1013904223) >>> 0; return seed / 4294967296; } function mat(c, glow = false) { return api.toon(c, glow ? { glow: true } : {}); } const stone = mat("#55436f"); const ceilingMat = mat("#352744"); ceilingMat.side = T.DoubleSide; const rockMats = ["#614c78", "#735784", "#4b3b68", "#80658f"].map(c => mat(c)); const crystalMats = ["#49c9f1", "#83e4ff", "#f28acb", "#d573e9", "#a181f5", "#6ca8f6"].map(c => mat(c, true)); const waterMat = mat("#235678"); const glintMats = ["#75d7f1", "#f49bdb", "#b99af7", "#537fac"].map(c => mat(c, true)); function mesh(parent, geometry, material, x, y, z, rx = 0, ry = 0, rz = 0) { const m = new T.Mesh(geometry, material); m.position.set(x, y, z); m.rotation.set(rx, ry, rz); parent.add(m); return m; } function sphere(parent, material, x, y, z, sx, sy, sz) { const o = mesh(parent, new T.SphereGeometry(1, 10, 8), material, x, y, z); o.scale.set(sx, sy, sz); return o; } function box(parent, material, x, y, z, sx, sy, sz, ry = 0) { return mesh(parent, new T.BoxGeometry(sx, sy, sz), material, x, y, z, 0, ry, 0); } const cave = new T.Group(); cave.position.set(px, groundY, pz); cave.rotation.y = angle; mesh(cave, new T.CircleGeometry(600, 96), stone, 0, 0.02, 0, -Math.PI / 2); const dome = mesh(cave, new T.SphereGeometry(1, 48, 24, 0, Math.PI * 2, 0, Math.PI / 2), ceilingMat, 0, -0.2, 0); dome.scale.set(95, 41, 95); // A dark oval lake, with colored, broken mirror-images on its surface. const lake = mesh(cave, new T.CircleGeometry(1, 64), waterMat, 0, 0.09, 29, -Math.PI / 2); lake.scale.set(25, 17, 1); for (let i = 0; i < 72; i++) { const a = rand() * Math.PI * 2; const r = Math.sqrt(rand()) * 0.94; const x = Math.cos(a) * r * 24; const z = 29 + Math.sin(a) * r * 16; if (Math.abs(x) < 3.5 && Math.abs(z - 27) < 5) continue; const g = mesh(cave, new T.CircleGeometry(1, 8), glintMats[i % glintMats.length], x, 0.105 + (i % 3) * 0.002, z, -Math.PI / 2); g.scale.set(0.12 + rand() * 0.35, 0.5 + rand() * 1.5, 1); } // Uneven rocky banks, open near the viewer. for (let i = 0; i < 58; i++) { const a = i * Math.PI * 2 / 58; const x = Math.cos(a) * (25.8 + rand() * 1.4); const z = 29 + Math.sin(a) * (17.8 + rand() * 1.2); const s = 0.55 + rand() * 1.15; sphere(cave, rockMats[i % rockMats.length], x, 0.25, z, s * 1.5, s * 0.55, s); } function crystalCluster(x, z, scale, colorIndex) { const cluster = new T.Group(); cluster.position.set(x, 0.1, z); cave.add(cluster); sphere(cluster, rockMats[colorIndex % rockMats.length], 0, 0.35 * scale, 0, 1.3 * scale, 0.55 * scale, 1.05 * scale); for (let j = 0; j < 5; j++) { const a = j * Math.PI * 2 / 5 + rand() * 0.4; const offset = j === 0 ? 0 : 0.7 * scale; const h = scale * (j === 0 ? 4.8 : 2.0 + rand() * 2.4); const r = scale * (j === 0 ? 0.62 : 0.38 + rand() * 0.18); const shard = new T.Group(); shard.position.set(Math.cos(a) * offset, 0.2 * scale, Math.sin(a) * offset); shard.rotation.z = j === 0 ? (rand() - 0.5) * 0.16 : Math.cos(a) * 0.25; shard.rotation.x = j === 0 ? 0 : -Math.sin(a) * 0.25; cluster.add(shard); const cm = crystalMats[(colorIndex + j % 2) % crystalMats.length]; mesh(shard, new T.CylinderGeometry(r * 0.77, r, h * 0.72, 5), cm, 0, h * 0.36, 0); mesh(shard, new T.ConeGeometry(r * 0.77, h * 0.28, 5), cm, 0, h * 0.86, 0); } } // Giant formations on the far shore and throughout the cavern. for (let i = 0; i < 27; i++) { const a = i * Math.PI * 2 / 27; const x = Math.cos(a) * (30 + rand() * 7); const z = 29 + Math.sin(a) * (22 + rand() * 6); if (Math.hypot(x, z) < 9 || Math.hypot(x, z) > 86) continue; crystalCluster(x, z, 0.8 + rand() * 1.4, i % crystalMats.length); } for (let i = 0; i < 30; i++) { const a = rand() * Math.PI * 2; const r = 48 + rand() * 36; const x = Math.cos(a) * r, z = Math.sin(a) * r; if ((x * x / (29 * 29) + (z - 29) * (z - 29) / (21 * 21)) < 1) continue; crystalCluster(x, z, 0.8 + rand() * 1.7, i % crystalMats.length); } // Stalactites start at the curved roof and point down into the cavern. for (let i = 0; i < 125; i++) { const a = rand() * Math.PI * 2; const r = Math.sqrt(rand()) * 86; const x = Math.cos(a) * r, z = Math.sin(a) * r; const roof = 41 * Math.sqrt(Math.max(0, 1 - r * r / (95 * 95))); const h = 2.0 + rand() * 7.5; const radius = 0.45 + rand() * 1.3; mesh(cave, new T.ConeGeometry(radius, h, 7), rockMats[i % rockMats.length], x, roof - h / 2 + 0.25, z, Math.PI, 0, 0); } api.add(cave, { id: "crystal-cavern", describe: "a vast vaulted underground crystal cavern and shimmering lake", solid: false }); // A small, gently bobbing wooden boat. const boat = new T.Group(); const localBoat = new T.Vector3(0, 0.12, 27).applyAxisAngle(new T.Vector3(0, 1, 0), angle); boat.position.set(px + localBoat.x, groundY + localBoat.y, pz + localBoat.z); boat.rotation.y = angle + Math.PI; const wood = mat("#a66051"), darkWood = mat("#714353"), trim = mat("#e6a45e"); const skin = mat("#f2c9a0"), coat1 = mat("#e78b42"), coat2 = mat("#55a8a4"); const helmet1 = mat("#efb858"), helmet2 = mat("#b996e8"); const white = mat("#fff9f2", true), pupil = mat("#241b2b"), lamp = mat("#fff0a6", true); const hullShape = new T.Shape(); hullShape.moveTo(0, -2.65); hullShape.quadraticCurveTo(1.25, -2.1, 1.27, -0.9); hullShape.lineTo(1.27, 0.9); hullShape.quadraticCurveTo(1.15, 2.05, 0, 2.65); hullShape.quadraticCurveTo(-1.15, 2.05, -1.27, 0.9); hullShape.lineTo(-1.27, -0.9); hullShape.quadraticCurveTo(-1.25, -2.1, 0, -2.65); const hullGeo = new T.ExtrudeGeometry(hullShape, { depth: 0.55, bevelEnabled: true, bevelSize: 0.12, bevelThickness: 0.1, bevelSegments: 1, curveSegments: 6 }); const hull = mesh(boat, hullGeo, wood, 0, 0.02, 0, -Math.PI / 2); box(boat, darkWood, 0, 0.62, 0, 2.1, 0.12, 3.6); box(boat, trim, 0, 0.73, -0.9, 2.1, 0.13, 0.35); box(boat, trim, 0, 0.73, 0.9, 2.1, 0.13, 0.35); box(boat, trim, -1.13, 0.66, 0, 0.14, 0.18, 2.8); box(boat, trim, 1.13, 0.66, 0, 0.14, 0.18, 2.8); function explorer(x, z, coat, helmet, name) { const person = new T.Group(); person.name = name; person.position.set(x, 0.73, z); boat.add(person); sphere(person, coat, 0, 0.48, 0, 0.35, 0.5, 0.25); sphere(person, skin, 0, 1.11, 0, 0.31, 0.32, 0.28); sphere(person, helmet, 0, 1.35, -0.01, 0.34, 0.19, 0.3); box(person, darkWood, 0, 1.32, 0.27, 0.4, 0.1, 0.08); sphere(person, lamp, 0, 1.34, 0.34, 0.105, 0.105, 0.06); for (const side of [-1, 1]) { sphere(person, white, side * 0.13, 1.12, 0.245, 0.105, 0.12, 0.07); sphere(person, pupil, side * 0.13, 1.12, 0.305, 0.032, 0.037, 0.022); const arm = sphere(person, coat, side * 0.38, 0.49, 0, 0.12, 0.35, 0.12); arm.rotation.z = side * 0.28; sphere(person, skin, side * 0.46, 0.23, 0.04, 0.11, 0.11, 0.11); sphere(person, darkWood, side * 0.16, 0.12, 0.16, 0.14, 0.12, 0.25); } return person; } const person1 = explorer(-0.48, -0.85, coat1, helmet1, "orange-explorer"); const person2 = explorer(0.48, 0.85, coat2, helmet2, "teal-explorer"); // Soft cones suggest the explorers' headlamp beams. const beamMat = mat("#f9edb2", true); beamMat.transparent = true; beamMat.opacity = 0.16; beamMat.depthWrite = false; for (const p of [person1, person2]) { const beam = new T.Mesh(new T.ConeGeometry(0.95, 4, 12, 1, true), beamMat); beam.position.set(0, 0.87, 2.25); beam.quaternion.setFromUnitVectors(new T.Vector3(0, 1, 0), new T.Vector3(0, 0.24, -0.97).normalize()); p.add(beam); } const oar = box(boat, trim, 1.55, 0.66, -0.2, 2.3, 0.1, 0.13, -0.25); box(boat, wood, 2.63, 0.64, 0.07, 0.52, 0.08, 0.36, -0.25); api.add(boat, { id: "explorer-boat", describe: "a little wooden boat with two headlamp-wearing explorers", solid: false }); const baseY = boat.position.y; api.onFrame((dt, t) => { boat.position.y = baseY + Math.sin(t * 1.2) * 0.065; boat.rotation.z = Math.sin(t * 0.9) * 0.025; person1.rotation.y = Math.sin(t * 0.45) * 0.12; person2.rotation.y = Math.sin(t * 0.53 + 1.5) * 0.13; }); api.say = "I made a vast crystal cavern with a shimmering underground lake and two headlamp-wearing explorers in a little boat."; api.suggest = [ "Add a waterfall flowing into the lake", "Make the crystals pulse with color", "Add a colony of friendly cave bats", "Build a rope bridge across the water" ];