const T = api.THREE; api.world({sky:"#a9d8ea", haze:"#dce5d0", shadow:"#8b6b9a"}); 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 right = new T.Vector3(dir.z,0,-dir.x); const origin = new T.Vector3(api.player.x,0,api.player.z); const yaw = Math.atan2(dir.x,dir.z); function at(x,y,z) { return new T.Vector3(origin.x + right.x*x + dir.x*z, y, origin.z + right.z*x + dir.z*z); } function rootAt(x,y,z) { const g = new T.Group(); g.position.copy(at(x,y,z)); g.rotation.y = yaw; return g; } function material(c, glow=false) { return api.toon(c,{glow}); } function box(g,name,x,y,z,sx,sy,sz,color,rz=0) { const m = new T.Mesh(new T.BoxGeometry(sx,sy,sz),material(color)); m.name=name; m.position.set(x,y,z); m.rotation.z=rz; g.add(m); return m; } function ball(g,name,x,y,z,sx,sy,sz,color) { const m=new T.Mesh(new T.SphereGeometry(1,12,9),material(color)); m.name=name; m.position.set(x,y,z); m.scale.set(sx,sy,sz); g.add(m); return m; } function beam(g,name,a,b,r1,r2,color) { const av=new T.Vector3(...a), bv=new T.Vector3(...b), v=bv.clone().sub(av); const m=new T.Mesh(new T.CylinderGeometry(r2,r1,v.length(),8),material(color)); m.name=name; m.position.copy(av.add(bv).multiplyScalar(.5)); m.quaternion.setFromUnitVectors(new T.Vector3(0,1,0),v.normalize()); g.add(m); return m; } function add(g,id,describe,solid=true) { api.add(g,{id,describe,solid}); } const ground=new T.Mesh(new T.CircleGeometry(600,96),material("#b9a55c")); ground.rotation.x=-Math.PI/2; ground.position.y=.02; add(ground,"autumn-ground","golden autumn valley floor",false); const landscape=rootAt(0,0,0); for(let i=0;i<34;i++){ const side=i%2===0?-1:1; const x=side*(48+(i%5)*16); const z=-80+i*11; const h=9+(i%4)*3; ball(landscape,"valley-hill",x,h*.12,z,25+(i%3)*6,h,24+(i%4)*4, ["#b59755","#a99059","#be9e5d","#ac8e69"][i%4]); } for(let i=0;i<40;i++){ const x=Math.sin(i*13.2)*100, z=Math.cos(i*7.4)*110+30; const patch=new T.Mesh(new T.CircleGeometry(2+(i%5)*1.2,12),material(i%2?"#c4ae67":"#a99d5d")); patch.rotation.x=-Math.PI/2; patch.position.set(x,.035,z); landscape.add(patch); } add(landscape,"valley-hills","rolling golden hills around the valley",false); const sky=rootAt(0,0,0); ball(sky,"sun",80,100,245,25,25,25,"#ffe6a1"); for(let i=0;i<5;i++){ const x=-115+i*58, y=60+(i%2)*12, z=175+(i%3)*22; for(let j=0;j<4;j++) ball(sky,"cloud",x+j*9,y+Math.sin(j*2)*3,z,12,5,5,"#fff0d7"); } add(sky,"autumn-sky-details","warm sun and drifting cream clouds",false); // The river runs across the valley, leaving the bridge aligned with the path. function riverStrip(width,y,color) { const verts=[], indices=[]; const n=120; for(let i=0;i<=n;i++){ const x=-180+i*3; const center=25+4*Math.sin(x*.055); verts.push(x,y,center-width/2,x,y,center+width/2); if(i{ const g=rootAt(p[0],0,p[1]); const h=5.5+(i%4)*.5; beam(g,"trunk",[0,0,0],[.1,h*.7,0],.38,.22,"#80503a"); const crown=new T.Group(); crown.name="maple-crown"; crown.position.set(.1,h*.67,0); g.add(crown); const palette=[reds,oranges,golds][i%3]; for(let j=0;j<6;j++){ const a=j*Math.PI/3, r=1.2+(j%2)*.3; beam(crown,"branch",[0,-.8,0],[Math.cos(a)*r,1.0+(j%2)*.4,Math.sin(a)*r],.13,.06,"#80503a"); ball(crown,"foliage",Math.cos(a)*r,1.35+(j%2)*.4,Math.sin(a)*r,1.35,1.15,1.25,palette[j%3]); } ball(crown,"foliage-top",0,2.45,0,1.65,1.4,1.55,palette[1]); // Little pointed clusters give the rounded crown a maple-like silhouette. for(let j=0;j<7;j++){ const a=j*2.4; const m=new T.Mesh(new T.ConeGeometry(.32,.85,5),material(palette[j%3])); m.position.set(Math.cos(a)*1.5,2.3+(j%3)*.4,Math.sin(a)*1.5); m.rotation.z=Math.cos(a)*.3; crown.add(m); } for(let j=0;j<3;j++) { const a=j*2.1; beam(g,"root",[0,.22,0],[Math.cos(a)*.7,.06,Math.sin(a)*.7],.16,.06,"#80503a"); } crowns.push({c:crown,phase:i*.7}); add(g,"maple-"+(i+1),"a colorful autumn maple tree"); }); api.onFrame((dt,t)=>{ for(const item of crowns){ item.c.rotation.z=Math.sin(t*.6+item.phase)*.025; item.c.rotation.x=Math.sin(t*.45+item.phase)*.018; } }); api.particles({type:"particles",kind:"confetti",place:{where:"here",height:18},area:[85,85],rate:32,velocity:[.45,-.9,.25],jitter:.7,gravity:.15,life:16,size:.18,colors:["#d84d36","#ef8a3c","#e9bd48","#b93f37"],duration:0}); api.say="I made an autumn valley with a winding river, a covered bridge, and a cozy farmhouse. Maple leaves drift down while smoke curls from the chimney."; api.suggest=["add a rowboat by the river","put a scarecrow near the farmhouse","make it a golden sunset","add a family of deer among the trees"];