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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
<title>VoxelCraft - 单文件体素世界（三维像素风）</title>
<style>
html, body { height: 100%; }
body { margin: 0; overflow: hidden; background: #87CEEB; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Helvetica Neue', Arial, 'Noto Sans SC', 'Microsoft Yahei', sans-serif; }
canvas { display: block; image-rendering: pixelated; }
.ui { position: fixed; pointer-events: none; color: #fff; text-shadow: 0 1px 2px rgba(0,0,0,.6); font-size: 12px; }
.hud-top { top: 10px; left: 12px; display: flex; gap: 12px; align-items: center; }
.panel { background: rgba(0,0,0,.35); border: 1px solid rgba(255,255,255,.15); border-radius: 6px; padding: 8px 10px; }
#fps { min-width: 64px; text-align: center; }
#seed { opacity: .9; }
#help { position: fixed; right: 12px; top: 10px; max-width: 360px; }
#cross { position: fixed; top: 50%; left: 50%; width: 20px; height: 20px; margin-left: -10px; margin-top: -10px; opacity: .9; }
#cross::before, #cross::after { content: ''; position: absolute; background: rgba(255,255,255,.9); }
#cross::before { left: 9px; top: 0; width: 2px; height: 20px; }
#cross::after { top: 9px; left: 0; height: 2px; width: 20px; }
#hotbar { position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%); display: flex; gap: 6px; }
.slot { width: 42px; height: 42px; border-radius: 6px; border: 2px solid rgba(255,255,255,.25); background: rgba(0,0,0,.35); box-shadow: inset 0 0 0 2px rgba(0,0,0,.25); display: grid; place-items: center; }
.slot.sel { border-color: #ffd86b; box-shadow: 0 0 6px rgba(255,216,107,.8), inset 0 0 0 2px rgba(0,0,0,.25); }
.chip { width: 28px; height: 28px; border-radius: 4px; box-shadow: inset 0 0 0 2px rgba(0,0,0,.25); image-rendering: pixelated; background-size: cover; }
#lock-cover { position: fixed; inset: 0; display: grid; place-items: center; background: radial-gradient(1200px 600px at 50% 50%, rgba(0,0,0,.35), rgba(0,0,0,.6)); color: #fff; }
#lock-card { pointer-events: auto; background: rgba(0,0,0,.55); border: 1px solid rgba(255,255,255,.2); border-radius: 12px; padding: 18px 20px; max-width: 560px; }
#lock-card h1 { margin: 0 0 8px; font-size: 20px; }
#lock-card p { margin: 6px 0; line-height: 1.5; opacity: .95; }
#startBtn { margin-top: 10px; padding: 8px 14px; border-radius: 8px; border: 0; background: #ffd86b; color: #222; font-weight: 700; cursor: pointer; }
#startBtn:hover { filter: brightness(1.05); }
</style>
</head>
<body>
<div class="ui hud-top">
<div id="fps" class="panel">FPS 0</div>
<div id="seed" class="panel">SEED -</div>
</div>
<div id="help" class="ui panel">
<div><strong>操作</strong></div>
<div>点击画面锁定鼠标；W/A/S/D 移动，空格跳，Shift 下蹲，F 飞行切换</div>
<div>鼠标左键：挖掘；右键：放置；滚轮切换；数字键 1-8 切换方块</div>
<div>E：简易背包提示；T：生成树；R：刷新附近区块</div>
</div>
<div id="cross"></div>
<div id="hotbar"></div>
<div id="lock-cover">
<div id="lock-card">
<h1>VoxelCraft · 三维像素世界</h1>
<p>一个使用 three.js 的小型“类 Minecraft”体验：无限体素地形（分区块）、树木生成、水面、简单怪物、昼夜循环、选中/破坏/放置方块、第一人称指针锁定控制与基础碰撞。</p>
<p>提示：为获得像素观感，本页使用最近邻采样与像素纹理。渲染依赖网络加载 three.js（CDN）。</p>
<button id="startBtn">开始游戏（锁定鼠标）</button>
</div>
</div>
<!-- 兼容更广的浏览器对 import map 的支持 -->
<script async src="https://unpkg.com/es-module-shims@1.10.0/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "https://unpkg.com/three@0.158.0/build/three.module.js",
"three/addons/": "https://unpkg.com/three@0.158.0/examples/jsm/"
}
}
</script>
<script type="module">
// 通过 import map 使用别名导入 three.js 及其附加模块
import * as THREE from 'three';
import { PointerLockControls } from 'three/addons/controls/PointerLockControls.js';
// =============== 基础常量 ===============
const WORLD = { CHUNK: 16, HEIGHT: 96, RENDER_DIST: 3, SEA: 46 };
const PLAYER = { H: 1.8, W: 0.6, SPEED: 5.0, JUMP: 8.5, FLY: false };
const PHYS = { GRAV: 18.0, FRICTION: 8.0, AIR: 1.0 };
const RAY_DIST = 6.0;
const DAY_LEN = 180; // 秒
// 方块 ID
const BID = {
AIR: 0,
GRASS: 1,
DIRT: 2,
STONE: 3,
WOOD: 4,
LEAF: 5,
SAND: 6,
WATER: 7,
PLANK: 8,
TORCH: 9
};
// 材质图块索引（生成图集后赋值）
const TILE = {};
// 方块定义（是否固体、是否透明、每个朝向对应的 tile）
const BLOCKS = {
[BID.AIR]: { solid: false, opaque: false },
[BID.GRASS]: {
solid: true, opaque: true, tiles: { px:'grass_side', nx:'grass_side', pz:'grass_side', nz:'grass_side', py:'grass_top', ny:'dirt' }
},
[BID.DIRT]: { solid: true, opaque: true, tiles: { all:'dirt' } },
[BID.STONE]: { solid: true, opaque: true, tiles: { all:'stone' } },
[BID.SAND]: { solid: true, opaque: true, tiles: { all:'sand' } },
[BID.WOOD]: { solid: true, opaque: true, tiles: { px:'log_side', nx:'log_side', pz:'log_side', nz:'log_side', py:'log_top', ny:'log_top' } },
[BID.LEAF]: { solid: true, opaque: true, tiles: { all:'leaf' } },
[BID.PLANK]: { solid: true, opaque: true, tiles: { all:'plank' } },
[BID.WATER]: { solid: false, opaque: false, water: true, tiles: { all:'water' } },
[BID.TORCH]: { solid: true, opaque: false, tiles: { all:'torch' } }
};
// =============== 工具：随机与噪声 ===============
function mulberry32(a){ return function(){ let t=a+=0x6D2B79F5; t=Math.imul(t^t>>>15, t|1); t^=t+Math.imul(t^t>>>7, t|61); return ((t^t>>>14)>>>0)/4294967296; } }
function hashStr(str){ let h=2166136261>>>0; for(let i=0;i<str.length;i++){h^=str.charCodeAt(i); h=Math.imul(h,16777619);} return h>>>0; }
const SEED_STR = 'voxelcraft-'+Math.floor(Math.random()*1e9);
const RAND = mulberry32(hashStr(SEED_STR));
document.getElementById('seed').textContent = 'SEED '+SEED_STR;
// 简易 Perlin2D
function Perlin2D(seedRand){
const p = new Uint8Array(512);
const perm = new Uint8Array(256);
for(let i=0;i<256;i++) perm[i]=i;
for(let i=255;i>0;i--){ const j=Math.floor(seedRand()* (i+1)); [perm[i],perm[j]]=[perm[j],perm[i]]; }
for(let i=0;i<512;i++) p[i]=perm[i & 255];
function fade(t){ return t*t*t*(t*(t*6-15)+10); }
function lerp(a,b,t){ return a+(b-a)*t; }
function grad(hash, x, y){ const h=hash&3; const u=h<2?x:y; const v=h<2?y:x; return ((h&1)?-u:u)+((h&2)?-2*v:2*v); }
return function(x,y){
const X=Math.floor(x)&255, Y=Math.floor(y)&255;
x-=Math.floor(x); y-=Math.floor(y);
const u=fade(x), v=fade(y);
const aa=p[p[X]+Y], ab=p[p[X]+Y+1], ba=p[p[X+1]+Y], bb=p[p[X+1]+Y+1];
return lerp( lerp(grad(aa,x,y), grad(ba,x-1,y), u), lerp(grad(ab,x,y-1), grad(bb,x-1,y-1), u), v );
}
}
const perlin = Perlin2D(RAND);
function octaveNoise(x,z, oct=4, scale=64, p=0.5){
let amp=1, freq=1/scale, sum=0, norm=0;
for(let i=0;i<oct;i++){ sum += perlin(x*freq, z*freq) * amp; norm+=amp; amp*=p; freq*=2; }
return sum/norm; // [-1,1]
}
// =============== 像素图集生成 ===============
const atlas = createAtlas();
const atlasTex = new THREE.CanvasTexture(atlas.canvas);
atlasTex.magFilter = THREE.NearestFilter;
atlasTex.minFilter = THREE.NearestFilter;
atlasTex.wrapS = atlasTex.wrapT = THREE.RepeatWrapping;
function createAtlas(){
const names = [
'grass_top','grass_side','dirt','stone','log_side','log_top','leaf','sand','water','plank','torch'
];
const size = 16; const cols = 8; const rows = Math.ceil(names.length/cols);
const canvas = document.createElement('canvas'); canvas.width = cols*size; canvas.height = rows*size;
const ctx = canvas.getContext('2d');
function noiseColor(x,y, base, varr, seedMul=1){ const r=base[0]+Math.floor((RAND()*2-1)*varr); const g=base[1]+Math.floor((RAND()*2-1)*varr); const b=base[2]+Math.floor((RAND()*2-1)*varr); return `rgb(${clamp(r,0,255)},${clamp(g,0,255)},${clamp(b,0,255)})`; }
function clamp(v,a,b){ return Math.max(a,Math.min(b,v)); }
function drawTile(ix, fn){ const x=(ix%cols)*size; const y=Math.floor(ix/cols)*size; fn(ctx,x,y,size); }
function dRect(x,y,w,h, c){ ctx.fillStyle=c; ctx.fillRect(x,y,w,h); }
function hatch(x,y,size,c1,c2){ for(let i=0;i<size;i++){ for(let j=0;j<size;j++){ ctx.fillStyle = ((i+j)&1)?c1:c2; ctx.fillRect(x+i,y+j,1,1); } } }
const idx = {}; names.forEach((n,i)=> idx[n]=i);
TILE.index = idx; TILE.size=size; TILE.cols=cols; TILE.rows=rows;
TILE.uv = (name)=>{ const i=idx[name]; const u0=(i%cols)/cols, v0=(Math.floor(i/cols))/rows; const du=1/cols, dv=1/rows; return [u0,v0,du,dv]; };
// grass_top
drawTile(idx['grass_top'], (c,x,y,s)=>{
for(let i=0;i<s;i++) for(let j=0;j<s;j++){
const shade = 80 + Math.floor((Math.sin((i+j)*0.6)+1)*30) + Math.floor(RAND()*8);
c.fillStyle = `rgb(${40},${shade+60},${40})`;
c.fillRect(x+i,y+j,1,1);
}
});
// grass_side (上草下土)
drawTile(idx['grass_side'], (c,x,y,s)=>{
for(let i=0;i<s;i++) for(let j=0;j<s;j++){
let col;
if(j<5){ const shade = 90+((i^j)&3)*8; col = `rgb(40,${shade+60},40)`; }
else { const d=60+((i*j)&7); col=`rgb(${90-d/3},${60-d/5},${30})`; }
c.fillStyle=col; c.fillRect(x+i,y+j,1,1);
}
});
// dirt
drawTile(idx['dirt'], (c,x,y,s)=>{ for(let i=0;i<s;i++) for(let j=0;j<s;j++){ const d=50+((i*7+j*13)&15); dRect(x+i,y+j,1,1,`rgb(${100+d/5},${70+d/6},${40+d/8})`); } });
// stone
drawTile(idx['stone'], (c,x,y,s)=>{ for(let i=0;i<s;i++) for(let j=0;j<s;j++){ const d=((i*31+j*17)&31); dRect(x+i,y+j,1,1,`rgb(${110+d/6},${110+d/6},${110+d/6})`); } });
// log_side
drawTile(idx['log_side'], (c,x,y,s)=>{ for(let i=0;i<s;i++) for(let j=0;j<s;j++){ const b = 80+((i*13+j*7)&15); dRect(x+i,y+j,1,1,`rgb(${120+b/10},${90+b/10},${40})`); } });
// log_top
drawTile(idx['log_top'], (c,x,y,s)=>{ hatch(x,y,s,'#b98a55','#8a5e2f'); });
// leaf
drawTile(idx['leaf'], (c,x,y,s)=>{ for(let i=0;i<s;i++) for(let j=0;j<s;j++){ const g=120+((i*5+j*11)&31); dRect(x+i,y+j,1,1,`rgb(${40},${g},${40})`); } });
// sand
drawTile(idx['sand'], (c,x,y,s)=>{ for(let i=0;i<s;i++) for(let j=0;j<s;j++){ const d=((i*19+j*23)&15); dRect(x+i,y+j,1,1,`rgb(${235-d},${220-d},${170-d})`); } });
// water（半透明纹理，颜色供视觉参考）
drawTile(idx['water'], (c,x,y,s)=>{ for(let i=0;i<s;i++) for(let j=0;j<s;j++){ const b=180+((i*9+j*7)&31); dRect(x+i,y+j,1,1,`rgb(${30},${80},${b})`); } });
// plank
drawTile(idx['plank'], (c,x,y,s)=>{ hatch(x,y,s,'#b58c59','#996c3a'); });
// torch
drawTile(idx['torch'], (c,x,y,s)=>{ for(let i=0;i<s;i++) for(let j=0;j<s;j++){ const d=((i*13+j*29)&7); dRect(x+i,y+j,1,1,`rgb(${200+d*4},${170+d*3},${60+d*6})`); } });
// 同步给 hotbar 预览（每个 chip 背景图）
return { canvas, names, size, cols, rows };
}
// =============== three.js 场景搭建 ===============
const renderer = new THREE.WebGLRenderer({ antialias: false, alpha: false });
renderer.setPixelRatio(Math.min(2, window.devicePixelRatio||1));
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
const scene = new THREE.Scene();
scene.background = new THREE.Color(0x87CEEB);
const camera = new THREE.PerspectiveCamera(75, window.innerWidth/window.innerHeight, 0.05, 1000);
camera.position.set(0, 72, 0);
const controls = new PointerLockControls(camera, renderer.domElement);
const lockCover = document.getElementById('lock-cover');
const startBtn = document.getElementById('startBtn');
startBtn.addEventListener('click', ()=>{ controls.lock(); });
controls.addEventListener('lock', ()=>{ lockCover.style.display='none'; });
controls.addEventListener('unlock', ()=>{ lockCover.style.display='grid'; });
// 光照与环境
const sun = new THREE.DirectionalLight(0xffffff, 1.0);
sun.position.set(100, 150, 60);
sun.castShadow = false;
scene.add(sun);
const hemi = new THREE.HemisphereLight(0xbfd8ff, 0x334422, 0.5);
scene.add(hemi);
const ambientTorch = new THREE.PointLight(0xffaa55, 0.0, 10, 2.0); // 玩家近光
scene.add(ambientTorch);
// =============== 方块几何（面片构建） ===============
const DIRS = {
px: { n:[ 1,0,0], v:[ [0,0,1],[0,1,1],[0,1,0],[0,0,0] ] },
nx: { n:[-1,0,0], v:[ [1,0,0],[1,1,0],[1,1,1],[1,0,1] ] },
py: { n:[ 0,1,0], v:[ [0,1,1],[1,1,1],[1,1,0],[0,1,0] ] },
ny: { n:[ 0,-1,0],v:[ [0,0,0],[1,0,0],[1,0,1],[0,0,1] ] },
pz: { n:[ 0,0,1], v:[ [1,0,0],[1,1,0],[0,1,0],[0,0,0] ] },
nz: { n:[ 0,0,-1],v:[ [0,0,1],[0,1,1],[1,1,1],[1,0,1] ] },
};
function pushFace(dst, x,y,z, dir, tileName){
const {positions, normals, uvs, indices} = dst;
const baseIndex = (positions.length/3);
const verts = DIRS[dir].v;
const n = DIRS[dir].n;
// 顶点
for(let i=0;i<4;i++){
positions.push(x+verts[i][0], y+verts[i][1], z+verts[i][2]);
normals.push(n[0], n[1], n[2]);
}
// 索引（两个三角形）
indices.push(baseIndex, baseIndex+1, baseIndex+2, baseIndex, baseIndex+2, baseIndex+3);
// UV（按 tileName 定位）
const [u0,v0,du,dv] = TILE.uv(tileName);
// 注意 Three.js UV v 轴方向同纹理一致（此处构造正向）
uvs.push(u0+du, v0, u0+du, v0+dv, u0, v0+dv, u0, v0);
}
function makeGeometry(){
return { positions:[], normals:[], uvs:[], indices:[] };
}
function toBufferGeometry(src){
const geo = new THREE.BufferGeometry();
geo.setAttribute('position', new THREE.Float32BufferAttribute(src.positions, 3));
geo.setAttribute('normal', new THREE.Float32BufferAttribute(src.normals, 3));
geo.setAttribute('uv', new THREE.Float32BufferAttribute(src.uvs, 2));
geo.setIndex(src.indices);
geo.computeBoundingSphere();
return geo;
}
// 材质（固体与水面分离，保证透明排序）
const matSolid = new THREE.MeshStandardMaterial({ map: atlasTex, roughness: 1.0, metalness: 0.0 });
const matWater = new THREE.MeshStandardMaterial({ map: atlasTex, roughness: 0.9, metalness: 0.0, transparent: true, opacity: 0.65, depthWrite: false });
// =============== 世界数据与区块 ===============
class Chunk {
constructor(cx, cz){
this.cx=cx; this.cz=cz; this.size = WORLD.CHUNK; this.height = WORLD.HEIGHT;
this.data = new Uint8Array(this.size*this.height*this.size); // x + z*size + y*size*size
this.meshSolid = null; this.meshWater = null; this.built=false;
}
idx(x,y,z){ return x + z*this.size + y*this.size*this.size; }
get(x,y,z){ if(x<0||z<0||y<0||x>=this.size||z>=this.size||y>=this.height) return BID.AIR; return this.data[this.idx(x,y,z)]||0; }
set(x,y,z,v){ if(x<0||z<0||y<0||x>=this.size||z>=this.size||y>=this.height) return; this.data[this.idx(x,y,z)]=v; }
}
class World {
constructor(){ this.chunks = new Map(); }
key(cx,cz){ return cx+","+cz; }
hasChunk(cx,cz){ return this.chunks.has(this.key(cx,cz)); }
getChunk(cx,cz){ return this.chunks.get(this.key(cx,cz)); }
ensureChunk(cx,cz){ if(!this.hasChunk(cx,cz)){ const ch=new Chunk(cx,cz); this.generateChunk(ch); this.chunks.set(this.key(cx,cz), ch); } return this.getChunk(cx,cz); }
getBlock(wx,wy,wz){ const cx=Math.floor(wx/WORLD.CHUNK), cz=Math.floor(wz/WORLD.CHUNK); const ch=this.getChunk(cx,cz); if(!ch) return BID.AIR; const x=wx - cx*WORLD.CHUNK, z=wz - cz*WORLD.CHUNK; return ch.get(x,wy,z); }
setBlock(wx,wy,wz,id){ const cx=Math.floor(wx/WORLD.CHUNK), cz=Math.floor(wz/WORLD.CHUNK); const ch=this.ensureChunk(cx,cz); const x=wx - cx*WORLD.CHUNK, z=wz - cz*WORLD.CHUNK; ch.set(x,wy,z,id); this.scheduleRebuild(cx,cz); // 邻接面可能变化
if(x===0) this.scheduleRebuild(cx-1,cz); if(x===WORLD.CHUNK-1) this.scheduleRebuild(cx+1,cz);
if(z===0) this.scheduleRebuild(cx,cz-1); if(z===WORLD.CHUNK-1) this.scheduleRebuild(cx,cz+1);
}
scheduleRebuild(cx,cz){ const ch=this.getChunk(cx,cz); if(ch) ch.built=false; }
generateChunk(ch){
const baseX=ch.cx*ch.size, baseZ=ch.cz*ch.size;
for(let x=0;x<ch.size;x++){
for(let z=0;z<ch.size;z++){
const wx=baseX+x, wz=baseZ+z;
const n = octaveNoise(wx, wz, 5, 120, 0.55); // [-1,1]
const h = Math.floor( WORLD.SEA + 18*n + 10*octaveNoise(wx+1000,wz-1000,3,40,0.5) );
const beach = Math.abs(h - WORLD.SEA) <= 2;
for(let y=0;y<ch.height;y++){
let id=BID.AIR;
if(y<=h){
if(y===h){ id = beach? BID.SAND : BID.GRASS; }
else if(y>=h-3){ id = beach? BID.SAND : BID.DIRT; }
else { id = BID.STONE; }
} else if(y<=WORLD.SEA && y>=h){ id = BID.WATER; }
ch.set(x,y,z,id);
}
// 稀疏树木
if(Math.random() < 0.05 && h>WORLD.SEA && !beach){ this.placeTree(baseX+x, h+1, baseZ+z); }
}
}
}
placeTree(wx, wy, wz){
// 简单检查：需在草上
if(this.getBlock(wx,wy-1,wz)!==BID.GRASS) return;
const trunkH = 4 + Math.floor(RAND()*3);
for(let i=0;i<trunkH;i++) this.setBlock(wx, wy+i, wz, BID.WOOD);
const topY = wy+trunkH;
for(let dx=-2;dx<=2;dx++) for(let dy=-2;dy<=2;dy++) for(let dz=-2;dz<=2;dz++){
const dist = Math.abs(dx)+Math.abs(dy)+Math.abs(dz);
if(dist<=4 && !(dy<-1 && Math.abs(dx)+Math.abs(dz)===0)){
if(this.getBlock(wx+dx, topY+dy, wz+dz)===BID.AIR){ this.setBlock(wx+dx, topY+dy, wz+dz, BID.LEAF); }
}
}
}
buildChunkMesh(ch){
if(ch.built) return; ch.built=true;
if(ch.meshSolid){ scene.remove(ch.meshSolid); ch.meshSolid.geometry.dispose(); ch.meshSolid=null; }
if(ch.meshWater){ scene.remove(ch.meshWater); ch.meshWater.geometry.dispose(); ch.meshWater=null; }
const solid = makeGeometry(); const water = makeGeometry();
const size=ch.size, h=ch.height;
const wx0=ch.cx*size, wz0=ch.cz*size;
for(let y=0;y<h;y++){
for(let z=0;z<size;z++){
for(let x=0;x<size;x++){
const id = ch.get(x,y,z); if(id===BID.AIR) continue;
const def = BLOCKS[id]; const target = def.water? water : solid;
const tiles = def.tiles;
// 邻接检查
const worldX=wx0+x, worldZ=wz0+z;
// 每个方向，如果邻居为空/非不透明则添加该面
function visible(nx,ny,nz){ const b=world.getBlock(worldX+nx, y+ny, worldZ+nz); if(b===BID.AIR) return true; const d=BLOCKS[b]; return !d.opaque; }
if(visible( 1,0,0)) pushFace(target, worldX, y, worldZ, 'px', tiles.px||tiles.all);
if(visible(-1,0,0)) pushFace(target, worldX, y, worldZ, 'nx', tiles.nx||tiles.all);
if(visible(0, 1,0)) pushFace(target, worldX, y, worldZ, 'py', tiles.py||tiles.all);
if(visible(0,-1,0)) pushFace(target, worldX, y, worldZ, 'ny', tiles.ny||tiles.all);
if(visible(0,0, 1)) pushFace(target, worldX, y, worldZ, 'pz', tiles.pz||tiles.all);
if(visible(0,0,-1)) pushFace(target, worldX, y, worldZ, 'nz', tiles.nz||tiles.all);
}
}
}
if(solid.indices.length){ ch.meshSolid = new THREE.Mesh(toBufferGeometry(solid), matSolid); ch.meshSolid.frustumCulled=true; scene.add(ch.meshSolid); }
if(water.indices.length){ ch.meshWater = new THREE.Mesh(toBufferGeometry(water), matWater); ch.meshWater.renderOrder=1; scene.add(ch.meshWater); }
}
}
const world = new World();
// =============== 玩家控制与碰撞 ===============
const keys = new Set(); let onGround=false; let vel = new THREE.Vector3(); let wantJump=false; let fly=false; let sprint=false; let crouch=false;
const player = { pos: new THREE.Vector3(0, 80, 0) };
function aabbOverlaps(x,y,z){
// 检查玩家胶囊的 AABB 与固体方块碰撞
const hx=PLAYER.W*0.5, hy=PLAYER.H; const minX=Math.floor(x-hx), maxX=Math.floor(x+hx);
const minY=Math.floor(y), maxY=Math.floor(y+hy);
const minZ=Math.floor(z-hx), maxZ=Math.floor(z+hx);
for(let yy=minY;yy<=maxY;yy++){
for(let zz=minZ;zz<=maxZ;zz++){
for(let xx=minX;xx<=maxX;xx++){
const id=world.getBlock(xx,yy,zz); if(id!==BID.AIR && BLOCKS[id].solid){ return true; }
}
}
}
return false;
}
function stepPhysics(dt){
ambientTorch.position.copy(camera.position);
const spd = (sprint?1.8:1.0) * (crouch?0.5:1.0) * PLAYER.SPEED;
const dir = new THREE.Vector3();
const forward = new THREE.Vector3(); camera.getWorldDirection(forward); forward.y=0; forward.normalize();
const right = new THREE.Vector3().crossVectors(forward, new THREE.Vector3(0,1,0)).negate();
if(keys.has('KeyW')) dir.add(forward);
if(keys.has('KeyS')) dir.sub(forward);
if(keys.has('KeyA')) dir.sub(right);
if(keys.has('KeyD')) dir.add(right);
dir.normalize();
if(fly){
if(keys.has('Space')) dir.y+=1; if(keys.has('ShiftLeft')) dir.y-=1; dir.normalize();
vel.copy(dir.multiplyScalar(spd));
} else {
// 地面运动与重力
vel.x += dir.x*spd*6*dt; vel.z += dir.z*spd*6*dt;
const fr = onGround? PHYS.FRICTION : PHYS.AIR;
vel.x -= vel.x*Math.min(1, fr*dt); vel.z -= vel.z*Math.min(1, fr*dt);
vel.y -= PHYS.GRAV*dt; if(onGround && wantJump){ vel.y = PLAYER.JUMP; wantJump=false; }
}
// 逐轴碰撞
const pos=camera.position; const hx=PLAYER.W*0.5; const h=PLAYER.H;
// X
let nx = pos.x + vel.x*dt; if(aabbOverlaps(nx, pos.y, pos.z)){ nx = pos.x; vel.x=0; }
pos.x = nx;
// Z
let nz = pos.z + vel.z*dt; if(aabbOverlaps(pos.x, pos.y, nz)){ nz = pos.z; vel.z=0; }
pos.z = nz;
// Y
let ny = pos.y + vel.y*dt; const prevY=pos.y; if(aabbOverlaps(pos.x, ny, pos.z)){ if(vel.y>0){ ny=Math.floor(ny)+ (1-1e-3); } else { ny=Math.floor(prevY)+1e-3; onGround=true; } vel.y=0; } else { onGround=false; }
pos.y = ny;
}
// =============== 射线体素遍历（选方块） ===============
function raycastVoxel(origin, dir, maxDist){
// 3D DDA
let x=Math.floor(origin.x), y=Math.floor(origin.y), z=Math.floor(origin.z);
const stepX = dir.x>0?1:-1, stepY = dir.y>0?1:-1, stepZ = dir.z>0?1:-1;
const tDeltaX = Math.abs(1/ (dir.x||1e-6));
const tDeltaY = Math.abs(1/ (dir.y||1e-6));
const tDeltaZ = Math.abs(1/ (dir.z||1e-6));
const tx0 = (dir.x>0? (x+1-origin.x):(origin.x-x)) * tDeltaX;
const ty0 = (dir.y>0? (y+1-origin.y):(origin.y-y)) * tDeltaY;
const tz0 = (dir.z>0? (z+1-origin.z):(origin.z-z)) * tDeltaZ;
let tMaxX=tx0, tMaxY=ty0, tMaxZ=tz0;
let t=0; let lastN=[0,0,0];
while(t<=maxDist){
const id=world.getBlock(x,y,z); if(id!==BID.AIR && BLOCKS[id].opaque){ return { x,y,z, normal: lastN, id, dist:t }; }
if(tMaxX < tMaxY){ if(tMaxX < tMaxZ){ x+=stepX; t=tMaxX; tMaxX+=tDeltaX; lastN=[-stepX,0,0]; } else { z+=stepZ; t=tMaxZ; tMaxZ+=tDeltaZ; lastN=[0,0,-stepZ]; } }
else { if(tMaxY < tMaxZ){ y+=stepY; t=tMaxY; tMaxY+=tDeltaY; lastN=[0,-stepY,0]; } else { z+=stepZ; t=tMaxZ; tMaxZ+=tDeltaZ; lastN=[0,0,-stepZ]; } }
}
return null;
}
// =============== 区块加载与管理 ===============
function updateChunksAround(){
const cx = Math.floor(camera.position.x/WORLD.CHUNK);
const cz = Math.floor(camera.position.z/WORLD.CHUNK);
for(let dz=-WORLD.RENDER_DIST; dz<=WORLD.RENDER_DIST; dz++)
for(let dx=-WORLD.RENDER_DIST; dx<=WORLD.RENDER_DIST; dx++){
const ch = world.ensureChunk(cx+dx, cz+dz);
world.buildChunkMesh(ch);
}
}
// 初次加载一定范围
updateChunksAround();
// 根据地面高度微调初始 Y，避免出生在方块内部或水下
(function adjustSpawn(){
const wx=Math.floor(camera.position.x), wz=Math.floor(camera.position.z);
let sy = WORLD.HEIGHT-2; while(sy>1 && world.getBlock(wx,sy,wz)===BID.AIR) sy--; sy=Math.max(2, sy);
if(sy < WORLD.SEA-1) sy = WORLD.SEA+2; // 避免水下出生
camera.position.y = sy + 2.2;
})();
// =============== 怪物（简易 AI） ===============
class Mob {
constructor(x,y,z, color=0x55aa55){
this.pos=new THREE.Vector3(x,y,z);
this.vel=new THREE.Vector3();
const geo=new THREE.BoxGeometry(0.8,0.8,0.8);
const mat=new THREE.MeshStandardMaterial({ color });
this.mesh=new THREE.Mesh(geo,mat); this.mesh.position.copy(this.pos).add(new THREE.Vector3(0,0.4,0));
scene.add(this.mesh);
this.timer=0; this.target=null;
}
update(dt){
const toPlayer = new THREE.Vector3().subVectors(camera.position, this.pos); const dist = toPlayer.length();
if(dist<10){ toPlayer.y=0; toPlayer.normalize(); this.vel.x+=toPlayer.x*2*dt; this.vel.z+=toPlayer.z*2*dt; }
else {
this.timer-=dt; if(this.timer<=0){ this.timer= 1.5 + Math.random()*2.0; const a=Math.random()*Math.PI*2; this.target=[Math.cos(a), Math.sin(a)]; }
if(this.target){ this.vel.x += this.target[0]*1.2*dt; this.vel.z += this.target[1]*1.2*dt; }
}
// 简单重力与阻尼
this.vel.y -= PHYS.GRAV*dt*0.5; this.vel.x*= (1-2*dt); this.vel.z*=(1-2*dt);
// 碰撞（近似方块中心）
const tryMove=(dx,dy,dz)=>{ const nx=this.pos.x+dx, ny=this.pos.y+dy, nz=this.pos.z+dz; const bx=Math.floor(nx), by=Math.floor(ny), bz=Math.floor(nz); const id=world.getBlock(bx,by,bz); if(id!==BID.AIR && BLOCKS[id].solid) return false; this.pos.set(nx,ny,nz); return true; }
tryMove(this.vel.x*dt,0,0); tryMove(0,this.vel.y*dt,0); tryMove(0,0,this.vel.z*dt);
// 防止掉出世界
if(this.pos.y<1){ this.pos.y=1; this.vel.y=0; }
this.mesh.position.set(this.pos.x, this.pos.y+0.4, this.pos.z);
}
}
const mobs=[];
function spawnMobs(n=8){
for(let i=0;i<n;i++){
const x = camera.position.x + (Math.random()*40-20);
const z = camera.position.z + (Math.random()*40-20);
let y= WORLD.HEIGHT-2; while(y>0 && world.getBlock(Math.floor(x),y,Math.floor(z))===BID.AIR) y--; y++;
mobs.push(new Mob(x,y,z, (Math.random()<0.5)?0x66aa66:0xaa6666));
}
}
spawnMobs(6);
// =============== UI 与背包/热键 ===============
const selectableBlocks = [BID.GRASS,BID.DIRT,BID.STONE,BID.WOOD,BID.LEAF,BID.SAND,BID.PLANK,BID.TORCH];
let selIndex = 0;
const hotbar = document.getElementById('hotbar');
function refreshHotbar(){
hotbar.innerHTML='';
selectableBlocks.forEach((bid,i)=>{
const tileName = (BLOCKS[bid].tiles.py||BLOCKS[bid].tiles.px||BLOCKS[bid].tiles.all);
const idx = TILE.index[tileName];
const col=TILE.cols, row=TILE.rows, s=TILE.size;
const u = (idx%col)*s, v = Math.floor(idx/col)*s;
const chip = document.createElement('div'); chip.className='chip';
chip.style.backgroundImage = `url(${atlas.canvas.toDataURL()})`;
chip.style.backgroundPosition = `-${u}px -${v}px`;
chip.style.backgroundSize = `${col*s}px ${row*s}px`;
const slot = document.createElement('div'); slot.className='slot'+(i===selIndex?' sel':''); slot.appendChild(chip); hotbar.appendChild(slot);
});
}
refreshHotbar();
window.addEventListener('keydown', (e)=>{
if(e.code==='KeyF'){ fly=!fly; PLAYER.FLY=fly; }
if(e.code==='KeyE'){ /* 预留：背包开关 */ }
if(e.code==='KeyT'){ // 在视线处尝试生成树
const r = raycastVoxel(camera.position, camera.getWorldDirection(new THREE.Vector3()), 12);
if(r){ world.placeTree(r.x, r.y+1, r.z); updateChunksAround(); }
}
if(e.code==='KeyR'){ updateChunksAround(); }
if(e.code==='ShiftLeft'){ crouch=true; }
if(e.code==='Space'){ if(!fly) wantJump=true; }
if(e.code==='ControlLeft'){ sprint=true; }
// 数字选择
if(/^Digit[1-8]$/.test(e.code)){
selIndex = parseInt(e.code.slice(5))-1; refreshHotbar();
}
keys.add(e.code);
});
window.addEventListener('keyup', (e)=>{ keys.delete(e.code); if(e.code==='ShiftLeft') crouch=false; if(e.code==='ControlLeft') sprint=false; });
// 鼠标点击：破坏与放置
renderer.domElement.addEventListener('mousedown', (e)=>{
if(!controls.isLocked) return;
const dir = camera.getWorldDirection(new THREE.Vector3());
const hit = raycastVoxel(camera.position, dir, RAY_DIST);
if(e.button===0){ // 左键破坏
if(hit){ world.setBlock(hit.x, hit.y, hit.z, BID.AIR); updateChunksAround(); }
} else if(e.button===2){ // 右键放置
e.preventDefault();
if(hit){ const place = { x: hit.x + hit.normal[0], y: hit.y + hit.normal[1], z: hit.z + hit.normal[2] };
const bid = selectableBlocks[selIndex];
// 防止放到玩家体内
const cam = camera.position; const hx=PLAYER.W*0.5, h=PLAYER.H;
if(!(place.x>=Math.floor(cam.x-hx)&&place.x<=Math.floor(cam.x+hx)&& place.y>=Math.floor(cam.y)&&place.y<=Math.floor(cam.y+h)&& place.z>=Math.floor(cam.z-hx)&&place.z<=Math.floor(cam.z+hx))){
world.setBlock(place.x, place.y, place.z, bid); updateChunksAround();
}
}
}
});
// 禁用右键菜单（在画布上）
renderer.domElement.addEventListener('contextmenu', e=> e.preventDefault());
// =============== 昼夜循环 ===============
let worldTime = 8*60; // 起始 8:00 （分钟）
function updateDayNight(dt){
worldTime += dt* (1440/DAY_LEN); // 映射到游戏天
const t = (worldTime%1440)/1440; // [0,1)
const angle = t*2*Math.PI;
const sunH = Math.sin(angle);
const sunX = Math.cos(angle)*200, sunY = sunH*200, sunZ = Math.sin(angle*0.7)*100;
sun.position.set(sunX, sunY, sunZ);
const day = Math.max(0, sunH);
sun.intensity = 0.2 + day*0.9;
hemi.intensity = 0.2 + day*0.6;
scene.background.setHSL(0.6, 0.5, 0.6*day + 0.05);
ambientTorch.intensity = 0.0 + (1-day)*0.8; // 夜晚略亮些
}
// =============== 主循环 ===============
let last=performance.now(); let fpsSpan=document.getElementById('fps'); let fpsAcc=0, fpsCnt=0;
function loop(now){
const dt=Math.min(0.05, (now-last)/1000); last=now;
if(controls.isLocked){ stepPhysics(dt); }
updateDayNight(dt);
// 区块加载（低频）
chunkTick += dt; if(chunkTick>0.25){ updateChunksAround(); chunkTick=0; }
for(const m of mobs) m.update(dt);
// 选中高亮（简化：用辅助线框）
updateTargetHighlight();
renderer.render(scene,camera);
// FPS
fpsAcc+=dt; fpsCnt++; if(fpsAcc>=0.5){ fpsSpan.textContent = 'FPS '+Math.round(fpsCnt/fpsAcc); fpsAcc=0; fpsCnt=0; }
requestAnimationFrame(loop);
}
let chunkTick=0; requestAnimationFrame(loop);
// =============== 选中方块高亮 ===============
const hlGeo = new THREE.BoxGeometry(1.002,1.002,1.002);
const hlMat = new THREE.MeshBasicMaterial({ color: 0xffff00, wireframe:true });
const hlMesh = new THREE.Mesh(hlGeo, hlMat); hlMesh.visible=false; scene.add(hlMesh);
function updateTargetHighlight(){
const hit = raycastVoxel(camera.position, camera.getWorldDirection(new THREE.Vector3()), RAY_DIST);
if(hit){ hlMesh.visible=true; hlMesh.position.set(hit.x+0.5, hit.y+0.5, hit.z+0.5); }
else { hlMesh.visible=false; }
}
// =============== 视口与窗口 ===============
window.addEventListener('resize', ()=>{ renderer.setSize(window.innerWidth, window.innerHeight); camera.aspect = window.innerWidth/window.innerHeight; camera.updateProjectionMatrix(); });
</script>
</body>
</html>