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Copy pathGeometrydash.html
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2300 lines (2213 loc) · 115 KB
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover">
<meta name="theme-color" content="#0A1033">
<title>Geometry Dash Web · 几何冲刺</title>
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Orbitron:wght@600;700;900&family=JetBrains+Mono:wght@400;500;700&display=swap" rel="stylesheet">
<style>
:root {
--bg: #060818;
--panel: rgba(8, 12, 38, 0.92);
--panel-border: rgba(255,255,255,0.14);
--white: #FFFFFF;
--muted: #9BA3C9;
--green: #7DFF00;
--cyan: #00FFFF;
--gold: #FFD700;
--red: #FF3B5C;
--fd: 'Orbitron', system-ui, sans-serif;
--fm: 'JetBrains Mono', monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { color-scheme: dark; }
html, body {
width: 100%; height: 100%;
background: var(--bg);
overflow: hidden;
font-family: var(--fm);
user-select: none;
-webkit-user-select: none;
touch-action: manipulation;
-webkit-tap-highlight-color: transparent;
}
canvas { display: block; width: 100%; height: 100%; }
.hidden { display: none !important; }
/* ---------- HUD ---------- */
#hud { position: absolute; inset: 0; pointer-events: none; z-index: 10; }
#progress-wrap {
position: absolute; top: 12px; left: 50%;
transform: translateX(-50%);
width: min(46vw, 420px); height: 14px;
background: rgba(0,0,0,0.55);
border: 2px solid rgba(255,255,255,0.75);
border-radius: 9px;
}
#progress-fill {
position: absolute; top: 1px; left: 1px; bottom: 1px;
width: 0%; border-radius: 6px;
background: linear-gradient(180deg, #B4FF57, #52D000);
box-shadow: 0 0 10px rgba(125,255,0,0.55);
transition: width 0.08s linear;
}
#progress-pct {
position: absolute; top: 8px; left: calc(50% + min(23vw, 210px) + 12px);
color: var(--white); font-family: var(--fd);
font-size: 17px; font-weight: 700;
text-shadow: 0 2px 0 rgba(0,0,0,0.6), 0 0 12px rgba(255,255,255,0.25);
font-variant-numeric: tabular-nums;
}
#hud-coins { position: absolute; top: 40px; right: 16px; display: flex; gap: 7px; }
.hud-coin {
width: 17px; height: 17px; border-radius: 50%;
border: 2px solid rgba(255,215,0,0.8);
background: rgba(0,0,0,0.4);
box-shadow: 0 0 6px rgba(0,0,0,0.5);
transition: background 0.2s, box-shadow 0.2s;
}
.hud-coin.got {
background: radial-gradient(circle at 35% 30%, #FFF3B0, #FFD700 55%, #B8860B);
box-shadow: 0 0 12px rgba(255,215,0,0.8);
}
#pause-btn {
position: absolute; top: 8px; right: 12px;
width: 42px; height: 42px;
background: rgba(0,0,0,0.35);
border: 2px solid rgba(255,255,255,0.5);
border-radius: 10px;
color: #fff; cursor: pointer;
pointer-events: auto;
display: flex; align-items: center; justify-content: center;
transition: border-color 0.15s, background 0.15s;
}
#pause-btn:hover { border-color: var(--green); background: rgba(0,0,0,0.55); }
#pause-btn svg { width: 16px; height: 16px; fill: #fff; }
#practice-badge {
position: absolute; top: 14px; left: 14px;
font-family: var(--fd); font-size: 12px; font-weight: 700;
letter-spacing: 2px; color: #6CFF6C;
background: rgba(0,60,0,0.45);
border: 1px solid rgba(108,255,108,0.6);
padding: 5px 10px; border-radius: 7px;
text-shadow: 0 0 8px rgba(108,255,108,0.5);
}
/* ---------- 菜单通用 ---------- */
.overlay {
position: absolute; inset: 0; z-index: 50;
display: flex; align-items: center; justify-content: center;
background: rgba(4, 6, 20, 0.55);
backdrop-filter: blur(3px);
}
.overlay.opaque { background: rgba(4,6,20,0.0); backdrop-filter: none; }
.panel {
background: var(--panel);
border: 2px solid var(--panel-border);
border-radius: 18px;
box-shadow: 0 18px 50px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.08);
padding: 30px 34px;
text-align: center;
max-width: min(92vw, 760px);
max-height: 92vh;
overflow-y: auto;
animation: popIn 0.32s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes popIn {
from { opacity: 0; transform: scale(0.86) translateY(24px); }
to { opacity: 1; transform: scale(1) translateY(0); }
}
.gd-logo {
font-family: var(--fd); font-weight: 900;
font-size: clamp(34px, 7vw, 62px);
line-height: 1.02; letter-spacing: 2px;
text-transform: uppercase;
background: linear-gradient(180deg, #FFF8C0 0%, #FFD54A 38%, #FF8A00 72%, #B84A00 100%);
-webkit-background-clip: text; background-clip: text;
-webkit-text-fill-color: transparent;
filter: drop-shadow(0 3px 0 rgba(0,0,0,0.85)) drop-shadow(0 0 26px rgba(255,170,0,0.35));
}
.gd-sub {
font-family: var(--fd); font-weight: 700;
font-size: 13px; letter-spacing: 7px; margin-top: 8px;
color: var(--cyan);
text-shadow: 0 0 14px rgba(0,255,255,0.6);
}
.hint { color: var(--muted); font-size: 12px; letter-spacing: 1px; line-height: 1.9; }
.gbtn {
font-family: var(--fd); font-weight: 900;
text-transform: uppercase; letter-spacing: 1.5px;
font-size: 15px; color: #123300;
background: linear-gradient(180deg, #C6FF6B 0%, #7DE000 55%, #55B000 100%);
border: 2px solid #0E2A00;
box-shadow: 0 5px 0 #0E2A00, 0 8px 18px rgba(0,0,0,0.45);
border-radius: 12px;
padding: 13px 30px;
cursor: pointer;
transition: transform 0.08s, box-shadow 0.08s, filter 0.15s;
pointer-events: auto;
}
.gbtn:hover { filter: brightness(1.1); }
.gbtn:active { transform: translateY(4px); box-shadow: 0 1px 0 #0E2A00, 0 3px 8px rgba(0,0,0,0.45); }
.gbtn:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }
.gbtn.blue {
color: #001A33;
background: linear-gradient(180deg, #7FE9FF 0%, #19B8F0 55%, #0E86C4 100%);
border-color: #002238; box-shadow: 0 5px 0 #002238, 0 8px 18px rgba(0,0,0,0.45);
}
.gbtn.blue:active { box-shadow: 0 1px 0 #002238, 0 3px 8px rgba(0,0,0,0.45); }
.gbtn.red {
color: #330008;
background: linear-gradient(180deg, #FF8FA3 0%, #FF3B5C 55%, #C21237 100%);
border-color: #38000C; box-shadow: 0 5px 0 #38000C, 0 8px 18px rgba(0,0,0,0.45);
}
.gbtn.red:active { box-shadow: 0 1px 0 #38000C, 0 3px 8px rgba(0,0,0,0.45); }
.gbtn.ghost {
color: #E7ECFF;
background: linear-gradient(180deg, rgba(255,255,255,0.16), rgba(255,255,255,0.05));
border-color: rgba(255,255,255,0.4);
box-shadow: 0 5px 0 rgba(255,255,255,0.18), 0 8px 18px rgba(0,0,0,0.4);
}
.gbtn.ghost:active { box-shadow: 0 1px 0 rgba(255,255,255,0.18); }
.btn-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 22px; }
#big-play {
width: 118px; height: 118px; margin: 26px auto 20px;
border-radius: 26px;
background: linear-gradient(180deg, #C6FF6B 0%, #7DE000 55%, #4EA400 100%);
border: 3px solid #0E2A00;
box-shadow: 0 7px 0 #0E2A00, 0 14px 34px rgba(125,224,0,0.35);
cursor: pointer;
display: flex; align-items: center; justify-content: center;
transition: transform 0.1s, box-shadow 0.1s, filter 0.15s;
animation: playPulse 2.2s ease-in-out infinite;
}
#big-play:hover { filter: brightness(1.08); }
#big-play:active { transform: translateY(5px); box-shadow: 0 2px 0 #0E2A00, 0 6px 16px rgba(125,224,0,0.3); }
#big-play svg { width: 52px; height: 52px; fill: #123300; margin-left: 8px; filter: drop-shadow(0 2px 0 rgba(255,255,255,0.25)); }
@keyframes playPulse {
0%, 100% { box-shadow: 0 7px 0 #0E2A00, 0 14px 34px rgba(125,224,0,0.3); }
50% { box-shadow: 0 7px 0 #0E2A00, 0 14px 48px rgba(125,224,0,0.55); }
}
.toggles { display: flex; gap: 14px; justify-content: center; margin-top: 20px; }
.tgl {
width: 52px; height: 52px; border-radius: 50%;
background: rgba(255,255,255,0.07);
border: 2px solid rgba(255,255,255,0.35);
color: #fff; cursor: pointer;
display: flex; align-items: center; justify-content: center;
transition: border-color 0.15s, opacity 0.15s, box-shadow 0.15s;
}
.tgl svg { width: 22px; height: 22px; fill: currentColor; }
.tgl.off { opacity: 0.32; }
.tgl:hover { border-color: var(--green); box-shadow: 0 0 14px rgba(125,255,0,0.25); }
.tgl:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
/* ---------- 选关 ---------- */
#select-title {
font-family: var(--fd); font-weight: 900; font-size: 24px;
letter-spacing: 4px; color: #fff; text-transform: uppercase;
text-shadow: 0 2px 0 rgba(0,0,0,0.7), 0 0 18px rgba(255,255,255,0.2);
margin-bottom: 20px;
}
#cards { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.card {
width: 216px; border-radius: 16px;
border: 2px solid rgba(255,255,255,0.22);
padding: 16px 15px 15px;
cursor: pointer; position: relative;
transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
text-align: left;
}
.card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.65); box-shadow: 0 14px 34px rgba(0,0,0,0.5); }
.card:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }
.card.c0 { background: linear-gradient(160deg, #0E3D6B 0%, #0A2547 60%, #071A33 100%); }
.card.c1 { background: linear-gradient(160deg, #14653A 0%, #0B3D25 60%, #072B1A 100%); }
.card.c2 { background: linear-gradient(160deg, #7A2408 0%, #56160C 60%, #3A0D10 100%); }
.card-top { display: flex; align-items: center; gap: 11px; }
.face { width: 46px; height: 46px; flex: 0 0 auto; filter: drop-shadow(0 2px 3px rgba(0,0,0,0.5)); }
.card-name {
font-family: var(--fd); font-weight: 900; font-size: 15px;
color: #fff; letter-spacing: 0.5px; line-height: 1.25;
text-shadow: 0 2px 0 rgba(0,0,0,0.55);
}
.card-diff { font-size: 10px; letter-spacing: 2px; color: rgba(255,255,255,0.75); margin-top: 3px; font-weight: 700; }
.stars { display: flex; align-items: center; gap: 3px; margin-top: 10px; }
.stars svg { width: 15px; height: 15px; fill: var(--gold); filter: drop-shadow(0 1px 1px rgba(0,0,0,0.6)); }
.stars span { color: #fff; font-size: 12px; font-weight: 700; margin-left: 3px; }
.song-row {
margin-top: 10px; font-size: 10.5px; color: rgba(255,255,255,0.85);
display: flex; align-items: center; gap: 6px; letter-spacing: 0.4px;
}
.song-row svg { width: 13px; height: 13px; fill: #B18CFF; flex: 0 0 auto; }
.pbar-label { display: flex; justify-content: space-between; font-size: 9.5px; color: rgba(255,255,255,0.6); margin: 9px 0 3px; letter-spacing: 1px; }
.pbar { height: 10px; border-radius: 6px; background: rgba(0,0,0,0.5); border: 1px solid rgba(255,255,255,0.35); position: relative; overflow: hidden; }
.pbar > div { position: absolute; inset: 1px auto 1px 1px; width: 0%; border-radius: 4px; }
.pbar.normal > div { background: linear-gradient(180deg, #B4FF57, #52D000); }
.pbar.practice > div { background: linear-gradient(180deg, #7FE9FF, #1D9BFF); }
.card-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 11px; }
.card-coins { display: flex; gap: 5px; }
.card-coin { width: 13px; height: 13px; border-radius: 50%; border: 1.5px solid rgba(255,215,0,0.75); background: rgba(0,0,0,0.35); }
.card-coin.got { background: radial-gradient(circle at 35% 30%, #FFF3B0, #FFD700 55%, #B8860B); box-shadow: 0 0 7px rgba(255,215,0,0.7); }
.card-att { font-size: 9.5px; color: rgba(255,255,255,0.55); letter-spacing: 1px; }
.crown { position: absolute; top: -13px; right: 12px; width: 26px; height: 26px; filter: drop-shadow(0 2px 3px rgba(0,0,0,0.6)); }
/* ---------- 完成界面 ---------- */
.complete-title {
font-family: var(--fd); font-weight: 900;
font-size: clamp(28px, 6vw, 46px); letter-spacing: 2px;
text-transform: uppercase;
background: linear-gradient(180deg, #FFFBD0 0%, #FFE24A 45%, #FF9500 100%);
-webkit-background-clip: text; background-clip: text;
-webkit-text-fill-color: transparent;
filter: drop-shadow(0 3px 0 rgba(0,0,0,0.8)) drop-shadow(0 0 24px rgba(255,200,0,0.45));
animation: completeBounce 0.55s cubic-bezier(0.34,1.8,0.64,1);
}
@keyframes completeBounce {
0% { transform: scale(0.3); opacity: 0; }
60% { transform: scale(1.15); opacity: 1; }
100% { transform: scale(1); }
}
.death-title {
font-family: var(--fd); font-weight: 900;
font-size: clamp(26px, 5vw, 40px); letter-spacing: 2px; text-transform: uppercase;
background: linear-gradient(180deg, #FFB3C1 0%, #FF3B5C 55%, #A50E2D 100%);
-webkit-background-clip: text; background-clip: text;
-webkit-text-fill-color: transparent;
filter: drop-shadow(0 3px 0 rgba(0,0,0,0.8));
}
.stat-grid {
display: grid; grid-template-columns: repeat(2, minmax(120px, 1fr));
gap: 10px 26px; margin: 20px auto 4px; max-width: 360px;
}
.stat { display: flex; justify-content: space-between; gap: 12px; font-size: 13px; }
.stat b { color: #fff; font-family: var(--fd); font-weight: 700; }
.stat span { color: var(--muted); letter-spacing: 1px; }
.cmp-coins { display: flex; gap: 12px; justify-content: center; margin: 16px 0 4px; }
.cmp-coin { width: 30px; height: 30px; border-radius: 50%; border: 2.5px solid rgba(255,215,0,0.8); background: rgba(0,0,0,0.4); }
.cmp-coin.got { background: radial-gradient(circle at 35% 30%, #FFF3B0, #FFD700 55%, #B8860B); box-shadow: 0 0 16px rgba(255,215,0,0.85); }
.newbest {
display: inline-block; margin-top: 12px;
font-family: var(--fd); font-weight: 900; font-size: 14px; letter-spacing: 2px;
color: #7DFF00; text-shadow: 0 0 14px rgba(125,255,0,0.7);
animation: playPulse 1.4s infinite;
border: 1px solid rgba(125,255,0,0.5); border-radius: 8px; padding: 6px 14px;
}
.menu-note { margin-top: 16px; font-size: 11px; color: var(--muted); letter-spacing: 1px; line-height: 1.8; }
kbd {
font-family: var(--fm); font-size: 10.5px; color: #fff;
background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.3);
border-bottom-width: 2.5px; border-radius: 5px; padding: 1.5px 6px;
}
@media (max-width: 720px) {
.panel { padding: 22px 18px; }
#cards { gap: 10px; }
.card { width: min(86vw, 300px); }
#progress-wrap { width: 56vw; }
#progress-pct { left: calc(50% + 28vw + 8px); font-size: 14px; top: 10px; }
.stat-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
.panel, .complete-title, #big-play { animation: none; }
}
</style>
</head>
<body>
<canvas id="gameCanvas"></canvas>
<div id="hud" class="hidden">
<div id="progress-wrap"><div id="progress-fill"></div></div>
<div id="progress-pct">0%</div>
<div id="hud-coins">
<div class="hud-coin" id="hc0"></div>
<div class="hud-coin" id="hc1"></div>
<div class="hud-coin" id="hc2"></div>
</div>
<button id="pause-btn" aria-label="暂停">
<svg viewBox="0 0 24 24"><path d="M6 4h4v16H6zM14 4h4v16h-4z"/></svg>
</button>
<div id="practice-badge" class="hidden">PRACTICE</div>
</div>
<!-- 主菜单 -->
<div id="menu-main" class="overlay opaque">
<div class="panel">
<div class="gd-logo">Geometry<br>Dash</div>
<div class="gd-sub">WEB EDITION</div>
<button id="big-play" aria-label="开始游戏">
<svg viewBox="0 0 24 24"><path d="M8 5v14l11-7z"/></svg>
</button>
<div class="toggles">
<button class="tgl" id="tgl-music" aria-label="音乐开关">
<svg viewBox="0 0 24 24"><path d="M12 3v10.55A4 4 0 1 0 14 17V7h4V3h-6z"/></svg>
</button>
<button class="tgl" id="tgl-sfx" aria-label="音效开关">
<svg viewBox="0 0 24 24"><path d="M3 9v6h4l5 5V4L7 9H3zm13.5 3A4.5 4.5 0 0 0 14 8.5v7a4.47 4.47 0 0 0 2.5-3.5zM14 3.23v2.06a7.007 7.007 0 0 1 0 13.42v2.06A9.01 9.01 0 0 0 14 3.23z"/></svg>
</button>
</div>
<div class="hint" style="margin-top:18px">
<kbd>空格</kbd> / <kbd>↑</kbd> / 点按 跳跃 · 按住连跳 · <kbd>P</kbd>/<kbd>Esc</kbd> 暂停
</div>
</div>
</div>
<!-- 选关 -->
<div id="menu-select" class="overlay opaque hidden">
<div class="panel" style="padding-bottom:24px">
<div id="select-title">Select Level</div>
<div id="cards"></div>
<div class="btn-row">
<button class="gbtn ghost" id="sel-back">← 返回</button>
</div>
<div class="menu-note">每关 3 枚隐藏金币 · 练习模式含检查点 · 关卡与音乐逐拍同步</div>
</div>
</div>
<!-- 暂停 -->
<div id="menu-pause" class="overlay hidden">
<div class="panel">
<div class="death-title" style="background:linear-gradient(180deg,#DDE6FF,#8FB0FF 55%,#4A6ACF);-webkit-background-clip:text;background-clip:text;">Paused</div>
<div class="stat-grid" style="margin-top:16px">
<div class="stat"><span>进度</span><b id="pause-pct">0%</b></div>
<div class="stat"><span>尝试</span><b id="pause-att">1</b></div>
</div>
<div class="btn-row">
<button class="gbtn" id="pause-resume">继续</button>
<button class="gbtn blue" id="pause-restart">重来</button>
</div>
<div class="btn-row">
<button class="gbtn ghost" id="pause-practice">进入练习模式</button>
<button class="gbtn red" id="pause-exit">退出</button>
</div>
<div class="toggles">
<button class="tgl" id="ptgl-music" aria-label="音乐开关">
<svg viewBox="0 0 24 24"><path d="M12 3v10.55A4 4 0 1 0 14 17V7h4V3h-6z"/></svg>
</button>
<button class="tgl" id="ptgl-sfx" aria-label="音效开关">
<svg viewBox="0 0 24 24"><path d="M3 9v6h4l5 5V4L7 9H3zm13.5 3A4.5 4.5 0 0 0 14 8.5v7a4.47 4.47 0 0 0 2.5-3.5zM14 3.23v2.06a7.007 7.007 0 0 1 0 13.42v2.06A9.01 9.01 0 0 0 14 3.23z"/></svg>
</button>
</div>
</div>
</div>
<!-- 通关 -->
<div id="menu-complete" class="overlay hidden">
<div class="panel">
<div class="complete-title">Level Complete!</div>
<div class="hint" id="cmp-level" style="margin-top:8px;letter-spacing:2px"></div>
<div class="cmp-coins">
<div class="cmp-coin" id="cc0"></div>
<div class="cmp-coin" id="cc1"></div>
<div class="cmp-coin" id="cc2"></div>
</div>
<div class="stat-grid">
<div class="stat"><span>尝试次数</span><b id="cmp-att">1</b></div>
<div class="stat"><span>跳跃次数</span><b id="cmp-jumps">0</b></div>
<div class="stat"><span>用时</span><b id="cmp-time">0:00</b></div>
<div class="stat"><span>模式</span><b id="cmp-mode">NORMAL</b></div>
</div>
<div id="cmp-newbest" class="newbest hidden">★ 首次通关 ★</div>
<div class="btn-row">
<button class="gbtn" id="cmp-replay">再玩一次</button>
<button class="gbtn blue" id="cmp-select">选关</button>
</div>
</div>
</div>
<script>
(function() {
'use strict';
const canvas = document.getElementById('gameCanvas');
const ctx = canvas.getContext('2d');
const $ = id => document.getElementById(id);
const hud = $('hud'), progressFill = $('progress-fill'), progressPct = $('progress-pct');
const hudCoins = [$('hc0'), $('hc1'), $('hc2')];
const practiceBadge = $('practice-badge');
const menuMain = $('menu-main'), menuSelect = $('menu-select'),
menuPause = $('menu-pause'), menuComplete = $('menu-complete');
const prefersReducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
let W = 0, H = 0, dpr = 1;
function resizeCanvas() {
dpr = Math.min(window.devicePixelRatio || 1, 2);
W = window.innerWidth; H = window.innerHeight;
canvas.width = W * dpr; canvas.height = H * dpr;
ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
}
window.addEventListener('resize', resizeCanvas);
resizeCanvas();
// ============================================================
// SOUND ENGINE（音效；BGM 系统在下方，保持原样）
// ============================================================
class SoundEngine {
constructor() {
this.ctx = null;
this.masterGain = null;
this.sfxEnabled = true;
this.bgmEnabled = true;
this._init();
}
_init() {
try {
this.ctx = new (window.AudioContext || window.webkitAudioContext)();
this.masterGain = this.ctx.createGain();
this.masterGain.gain.value = 0.4;
this.masterGain.connect(this.ctx.destination);
} catch (_) {}
}
resume() {
if (this.ctx && this.ctx.state === 'suspended') {
this.ctx.resume().catch(() => {});
}
}
suspend() {
if (this.ctx && this.ctx.state === 'running') {
this.ctx.suspend().catch(() => {});
}
}
setSFXEnabled(e) { this.sfxEnabled = e; }
setBGMEnabled(e) { this.bgmEnabled = e; }
_node(freq, type, vol, dur) {
if (!this.ctx || !this.sfxEnabled) return null;
const osc = this.ctx.createOscillator();
const gain = this.ctx.createGain();
osc.type = type;
osc.frequency.setValueAtTime(freq, this.ctx.currentTime);
gain.gain.setValueAtTime(vol, this.ctx.currentTime);
gain.gain.exponentialRampToValueAtTime(0.001, this.ctx.currentTime + dur);
osc.connect(gain);
gain.connect(this.masterGain);
osc.start(this.ctx.currentTime);
osc.stop(this.ctx.currentTime + dur);
return { osc, gain };
}
_ramp(freq, endFreq, type, vol, dur) {
if (!this.ctx || !this.sfxEnabled) return;
const osc = this.ctx.createOscillator();
const gain = this.ctx.createGain();
osc.type = type;
osc.frequency.setValueAtTime(freq, this.ctx.currentTime);
osc.frequency.exponentialRampToValueAtTime(Math.max(endFreq, 20), this.ctx.currentTime + dur);
gain.gain.setValueAtTime(vol, this.ctx.currentTime);
gain.gain.exponentialRampToValueAtTime(0.001, this.ctx.currentTime + dur);
osc.connect(gain);
gain.connect(this.masterGain);
osc.start(this.ctx.currentTime);
osc.stop(this.ctx.currentTime + dur);
}
jump() {
this._ramp(380, 820, 'square', 0.10, 0.08);
this._ramp(600, 1200, 'sawtooth', 0.04, 0.05);
}
die() {
this._ramp(450, 60, 'sawtooth', 0.18, 0.35);
this._ramp(200, 40, 'square', 0.09, 0.25);
this._node(80, 'sine', 0.22, 0.08);
}
win() {
const notes = [523.25, 659.25, 783.99, 1046.50];
let t = 0;
notes.forEach((f) => {
setTimeout(() => this._node(f, 'sine', 0.14, 0.14), t);
t += 200;
});
setTimeout(() => this._node(1567.98, 'sine', 0.06, 0.18), 500);
}
land() { this._ramp(120, 60, 'sine', 0.10, 0.06); }
click() {
this._node(880, 'sine', 0.09, 0.03);
this._node(1200, 'square', 0.03, 0.02);
}
portal() {
this._ramp(300, 1200, 'sine', 0.1, 0.15);
this._ramp(500, 1800, 'triangle', 0.06, 0.1);
}
orb() {
this._ramp(520, 1400, 'square', 0.09, 0.09);
this._ramp(900, 1800, 'sine', 0.05, 0.07);
}
pad() {
this._ramp(200, 950, 'sawtooth', 0.11, 0.14);
this._ramp(420, 1600, 'sine', 0.05, 0.1);
}
coin() {
this._node(987.77, 'sine', 0.1, 0.07);
setTimeout(() => this._node(1318.51, 'sine', 0.11, 0.16), 70);
}
checkpoint() {
this._node(659.25, 'triangle', 0.08, 0.07);
setTimeout(() => this._node(880, 'triangle', 0.08, 0.11), 60);
}
}
const sound = new SoundEngine();
let soundMuted = false; // 供 BGM 系统引用（保留原变量名）
// ============================================================
// BGM MUSIC SYSTEM v2 —— 前瞻调度 + 和弦对齐 + 段落演进
// 三档难度 = 三首原创：云端巡航 / 霓虹奔跑者 / 过载协议
// ============================================================
const BGM_HZ = m => 440 * Math.pow(2, (m - 69) / 12);
const bsyn = {
ready: false,
init() {
if (this.ready || !sound.ctx) return;
const c = sound.ctx;
this.bus = c.createGain(); this.bus.gain.value = 0.5;
this.bus.connect(sound.masterGain);
this.duck = c.createGain(); this.duck.connect(this.bus);
this.dl = c.createDelay(1.2);
this.fb = c.createGain(); this.fb.gain.value = 0.32;
this.dlp = c.createBiquadFilter(); this.dlp.type = 'lowpass'; this.dlp.frequency.value = 3000;
const dOut = c.createGain(); dOut.gain.value = 0.5;
this.dlIn = c.createGain();
this.dlIn.connect(this.dl); this.dl.connect(this.dlp);
this.dlp.connect(this.fb); this.fb.connect(this.dl);
this.dlp.connect(dOut); dOut.connect(this.bus);
this.nb = c.createBuffer(1, c.sampleRate * 0.6, c.sampleRate);
const d = this.nb.getChannelData(0);
for (let i = 0; i < d.length; i++) d[i] = Math.random() * 2 - 1;
this.ready = true;
},
setTempo(bpm) { if (this.ready) this.dl.delayTime.value = 0.75 * 60 / bpm; },
ok() { return this.ready && sound.bgmEnabled && !soundMuted; },
send(node, amt) {
const g = sound.ctx.createGain(); g.gain.value = amt;
node.connect(g); g.connect(this.dlIn);
},
kick(t, v) {
if (!this.ok() || !v) return; const c = sound.ctx;
const o = c.createOscillator(), g = c.createGain();
o.type = 'sine';
o.frequency.setValueAtTime(150, t);
o.frequency.exponentialRampToValueAtTime(44, t + 0.08);
g.gain.setValueAtTime(v, t);
g.gain.exponentialRampToValueAtTime(0.0001, t + 0.22);
o.connect(g); g.connect(this.bus);
o.start(t); o.stop(t + 0.24);
this.duck.gain.cancelScheduledValues(t);
this.duck.gain.setValueAtTime(0.5, t);
this.duck.gain.linearRampToValueAtTime(1, t + 0.2);
},
snare(t, v) {
if (!this.ok() || !v) return; const c = sound.ctx;
const n = c.createBufferSource(); n.buffer = this.nb; n.loop = true;
const hp = c.createBiquadFilter(); hp.type = 'highpass'; hp.frequency.value = 1700;
const g = c.createGain();
g.gain.setValueAtTime(v, t);
g.gain.exponentialRampToValueAtTime(0.0001, t + 0.13);
n.connect(hp); hp.connect(g); g.connect(this.bus);
n.start(t); n.stop(t + 0.15);
const o = c.createOscillator(), og = c.createGain();
o.type = 'triangle';
o.frequency.setValueAtTime(195, t);
o.frequency.exponentialRampToValueAtTime(150, t + 0.06);
og.gain.setValueAtTime(v * 0.6, t);
og.gain.exponentialRampToValueAtTime(0.0001, t + 0.08);
o.connect(og); og.connect(this.bus);
o.start(t); o.stop(t + 0.09);
},
clap(t, v) {
if (!this.ok() || !v) return; const c = sound.ctx;
for (let i = 0; i < 2; i++) {
const tt = t + i * 0.012;
const n = c.createBufferSource(); n.buffer = this.nb; n.loop = true;
const bp = c.createBiquadFilter(); bp.type = 'bandpass';
bp.frequency.value = 1400; bp.Q.value = 1.1;
const g = c.createGain();
g.gain.setValueAtTime(v * (i ? 1 : 0.5), tt);
g.gain.exponentialRampToValueAtTime(0.0001, tt + (i ? 0.16 : 0.03));
n.connect(bp); bp.connect(g); g.connect(this.bus);
n.start(tt); n.stop(tt + 0.18);
}
},
hat(t, v, open) {
if (!this.ok() || !v) return; const c = sound.ctx;
const n = c.createBufferSource(); n.buffer = this.nb; n.loop = true;
n.playbackRate.value = 1.3;
const hp = c.createBiquadFilter(); hp.type = 'highpass'; hp.frequency.value = 8200;
const g = c.createGain(); const d = open ? 0.22 : 0.04;
g.gain.setValueAtTime(v, t);
g.gain.exponentialRampToValueAtTime(0.0001, t + d);
n.connect(hp); hp.connect(g); g.connect(this.bus);
n.start(t); n.stop(t + d + 0.02);
},
crash(t, v) {
if (!this.ok() || !v) return; const c = sound.ctx;
const n = c.createBufferSource(); n.buffer = this.nb; n.loop = true;
const hp = c.createBiquadFilter(); hp.type = 'highpass'; hp.frequency.value = 5000;
const g = c.createGain();
g.gain.setValueAtTime(v, t);
g.gain.exponentialRampToValueAtTime(0.0001, t + 1.1);
n.connect(hp); hp.connect(g); g.connect(this.bus);
n.start(t); n.stop(t + 1.15);
},
sub(t, m, d, v) {
if (!this.ok() || !v) return; const c = sound.ctx;
const o = c.createOscillator(), g = c.createGain();
o.type = 'sine'; o.frequency.value = BGM_HZ(m);
g.gain.setValueAtTime(0.0001, t);
g.gain.linearRampToValueAtTime(v, t + 0.015);
g.gain.setValueAtTime(v, t + Math.max(0.02, d - 0.06));
g.gain.exponentialRampToValueAtTime(0.0001, t + d);
o.connect(g); g.connect(this.duck);
o.start(t); o.stop(t + d + 0.02);
},
bass(t, m, d, v, acc) {
if (!this.ok() || !v) return; const c = sound.ctx;
const lp = c.createBiquadFilter(); lp.type = 'lowpass'; lp.Q.value = 2;
lp.frequency.setValueAtTime(acc ? 2300 : 1300, t);
lp.frequency.exponentialRampToValueAtTime(240, t + Math.min(0.22, d));
const g = c.createGain();
g.gain.setValueAtTime(v, t);
g.gain.exponentialRampToValueAtTime(0.0001, t + d);
const o1 = c.createOscillator(); o1.type = 'sawtooth'; o1.frequency.value = BGM_HZ(m);
const o2 = c.createOscillator(); o2.type = 'square'; o2.frequency.value = BGM_HZ(m - 12);
const g2 = c.createGain(); g2.gain.value = 0.45;
o1.connect(lp); o2.connect(g2); g2.connect(lp);
lp.connect(g); g.connect(this.duck);
o1.start(t); o2.start(t);
o1.stop(t + d + 0.03); o2.stop(t + d + 0.03);
},
pluck(t, m, d, v) {
if (!this.ok() || !v) return; const c = sound.ctx;
const lp = c.createBiquadFilter(); lp.type = 'lowpass'; lp.Q.value = 1;
lp.frequency.setValueAtTime(4500, t);
lp.frequency.exponentialRampToValueAtTime(380, t + Math.min(0.3, d));
const g = c.createGain();
g.gain.setValueAtTime(v, t);
g.gain.exponentialRampToValueAtTime(0.0001, t + d);
const o1 = c.createOscillator(); o1.type = 'triangle'; o1.frequency.value = BGM_HZ(m);
const o2 = c.createOscillator(); o2.type = 'sawtooth'; o2.frequency.value = BGM_HZ(m);
const g2 = c.createGain(); g2.gain.value = 0.4;
o1.connect(lp); o2.connect(g2); g2.connect(lp);
lp.connect(g); g.connect(this.duck);
this.send(g, 0.16);
o1.start(t); o2.start(t);
o1.stop(t + d + 0.02); o2.stop(t + d + 0.02);
},
stab(t, ms, d, v) {
if (!this.ok() || !v) return; const c = sound.ctx;
const lp = c.createBiquadFilter(); lp.type = 'lowpass'; lp.Q.value = 1.4;
lp.frequency.setValueAtTime(2600, t);
lp.frequency.exponentialRampToValueAtTime(500, t + d);
const g = c.createGain();
g.gain.setValueAtTime(v, t);
g.gain.exponentialRampToValueAtTime(0.0001, t + d);
ms.forEach(m => {
[-7, 7].forEach(det => {
const o = c.createOscillator(); o.type = 'sawtooth';
o.frequency.value = BGM_HZ(m); o.detune.value = det;
o.connect(lp); o.start(t); o.stop(t + d + 0.02);
});
});
lp.connect(g); g.connect(this.duck);
this.send(g, 0.1);
},
lead(t, m, d, v, hard) {
if (!this.ok() || !v) return; const c = sound.ctx;
const lp = c.createBiquadFilter(); lp.type = 'lowpass';
lp.frequency.value = hard ? 3600 : 2900; lp.Q.value = 0.8;
const g = c.createGain();
g.gain.setValueAtTime(0.0001, t);
g.gain.linearRampToValueAtTime(v, t + 0.012);
g.gain.setValueAtTime(v, t + Math.max(0.02, d - 0.05));
g.gain.exponentialRampToValueAtTime(0.0001, t + d + 0.08);
const vib = c.createOscillator(); vib.frequency.value = 5.4;
const vg = c.createGain(); vg.gain.setValueAtTime(0, t);
vg.gain.linearRampToValueAtTime(d > 0.3 ? 9 : 4, t + Math.min(0.3, d * 0.6));
vib.connect(vg);
[-7, 7].forEach(det => {
const o = c.createOscillator(); o.type = 'sawtooth';
o.frequency.value = BGM_HZ(m); o.detune.value = det;
vg.connect(o.detune);
o.connect(lp); o.start(t); o.stop(t + d + 0.1);
});
vib.start(t); vib.stop(t + d + 0.1);
lp.connect(g); g.connect(this.duck);
this.send(g, 0.28);
},
pad(t, ms, d, v) {
if (!this.ok() || !v) return; const c = sound.ctx;
const lp = c.createBiquadFilter(); lp.type = 'lowpass';
lp.frequency.value = 1150; lp.Q.value = 0.5;
const g = c.createGain();
const att = Math.min(0.6, d * 0.3);
g.gain.setValueAtTime(0.0001, t);
g.gain.linearRampToValueAtTime(v, t + att);
g.gain.setValueAtTime(v, t + Math.max(att, d - 0.2));
g.gain.linearRampToValueAtTime(0.0001, t + d + 0.4);
ms.forEach(m => {
[-8, 8].forEach(det => {
const o = c.createOscillator(); o.type = 'sawtooth';
o.frequency.value = BGM_HZ(m); o.detune.value = det;
o.connect(lp); o.start(t); o.stop(t + d + 0.45);
});
});
lp.connect(g); g.connect(this.duck);
},
riser(t, d, v) {
if (!this.ok() || !v) return; const c = sound.ctx;
const n = c.createBufferSource(); n.buffer = this.nb; n.loop = true;
const hp = c.createBiquadFilter(); hp.type = 'highpass';
hp.frequency.setValueAtTime(420, t);
hp.frequency.exponentialRampToValueAtTime(5200, t + d);
const g = c.createGain();
g.gain.setValueAtTime(0.0001, t);
g.gain.exponentialRampToValueAtTime(v, t + d);
g.gain.linearRampToValueAtTime(0.0001, t + d + 0.05);
n.connect(hp); hp.connect(g); g.connect(this.bus);
n.start(t); n.stop(t + d + 0.08);
}
};
const BGM_TRACKS = [
(function() { // Easy · 云端巡航 SKYLINE CRUISE · Am F C G
const CH = [[57,60,64],[53,57,60],[60,64,67],[55,59,62]];
const RT = [33,29,36,31];
const P1 = [[0,76,3],[4,72,2],[6,74,2],[8,72,7],[16,72,3],[20,69,2],[22,67,2],[24,69,7]];
const P2 = [[0,67,3],[4,72,2],[6,74,2],[8,76,7],[16,74,3],[20,71,2],[22,67,2],[24,74,7]];
const ARP = [0,1,2,1];
return { name:'SKYLINE CRUISE 云端巡航', bpm:100, loop:32, fn(e) {
const b=e.b, s=e.s, ci=b%4, ch=CH[ci], sec=b>>3;
if (s===0) bsyn.kick(e.t, 0.4);
if (s===8 && sec>0) bsyn.kick(e.t, 0.34);
if (s===8) bsyn.clap(e.t, 0.15);
if (s%2===0) bsyn.hat(e.t, s%4===0?0.032:0.018);
if (sec>0 && s%4===2) bsyn.hat(e.t, 0.04, true);
if (b%8===7) { if (s===12) bsyn.clap(e.t,0.07); if (s===14) bsyn.clap(e.t,0.09); }
if (s===0) bsyn.sub(e.t, RT[ci], e.sd*10, 0.07);
if (s===0) bsyn.bass(e.t, RT[ci]+12, e.sd*3, 0.05);
if (s===10) bsyn.bass(e.t, RT[ci]+12, e.sd*2, 0.04);
if (s===0) bsyn.pad(e.t, ch.map(x=>x+12), e.sd*15, sec===3?0.034:0.022);
if (s%2===0 && sec!==3) bsyn.pluck(e.t, ch[ARP[(s>>1)&3]]+24, e.sd*1.6, sec===0?0.028:0.034);
if (sec===3 && s===0) bsyn.pluck(e.t, ch[2]+24, e.sd*8, 0.042);
if (sec===1 || sec===2) {
const mel = (ci<2)?P1:P2, pos=(b%2)*16+s;
for (const nt of mel) if (nt[0]===pos) {
bsyn.lead(e.t, nt[1]+(sec===2?12:0), nt[2]*e.sd, sec===2?0.032:0.048);
if (sec===2) bsyn.pluck(e.t, nt[1], nt[2]*e.sd, 0.028);
}
}
}};
})(),
(function() { // Normal · 霓虹奔跑者 NEON RUNNER · Em C G D
const CH = [[64,67,71],[60,64,67],[62,67,71],[62,66,69]];
const RT = [40,36,43,38];
const P1 = [[0,76,3],[6,79,3],[12,76,2],[16,79,3],[22,76,3],[28,72,3]];
const P2 = [[0,74,3],[6,79,3],[12,74,2],[16,78,3],[22,74,3],[28,69,3]];
const AP = [0,2,1,2];
return { name:'NEON RUNNER 霓虹奔跑者', bpm:128, loop:32, fn(e) {
const b=e.b, s=e.s, ci=b%4, ch=CH[ci];
const brk=b>=16&&b<20, bld=b>=20&&b<24, big=b>=24;
if (!brk) { if (s%4===0) bsyn.kick(e.t, 0.44); }
else if (b===16 && s===0) bsyn.kick(e.t, 0.38);
if (!brk && (s===4||s===12)) bsyn.snare(e.t, big?0.19:0.16);
if (!brk && s%4===2) bsyn.hat(e.t, big?0.055:0.04, big&&s===14);
if (!brk && s%2===1 && (big||b>=8)) bsyn.hat(e.t, 0.015);
if (bld && b===23 && s%2===0) bsyn.snare(e.t, 0.09+s*0.008);
else if (!brk && b%8===7 && s>=12 && s%2===0) bsyn.snare(e.t, 0.11);
if (big && b%4===0 && s===0) bsyn.crash(e.t, 0.11);
if (!brk) {
if (s===0) bsyn.sub(e.t, RT[ci]-12, e.sd*3.5, 0.075);
if (s%4===2) bsyn.bass(e.t, RT[ci], e.sd*1.8, 0.08);
} else if (s===0) bsyn.sub(e.t, RT[ci]-12, e.sd*15, 0.065);
if (s%2===(big?0:1)) bsyn.pluck(e.t, ch[AP[(s>>2)&3]]+12, e.sd*1.4, brk?0.028:0.024);
if ((brk||big) && s===0) bsyn.pad(e.t, ch, e.sd*15, brk?0.03:0.018);
if (b===22 && s===0) bsyn.riser(e.t, e.sd*32, 0.05);
if ((b>=8&&b<16) || big) {
const mel = ci<2?P1:P2, pos=(b%2)*16+s;
for (const nt of mel) if (nt[0]===pos) {
bsyn.lead(e.t, nt[1], nt[2]*e.sd, 0.05);
if (big) bsyn.lead(e.t, nt[1]+12, nt[2]*e.sd, 0.018);
}
}
}};
})(),
(function() { // Hard · 过载协议 OVERDRIVE PROTOCOL · Am F G E
const CH = [[57,60,64],[53,57,60],[55,59,62],[52,56,59]];
const RT = [33,29,31,28];
const MEL = [
[[0,81,2],[4,79,2],[6,81,2],[10,84,3]],
[[0,81,2],[4,77,2],[6,79,2],[10,81,3]],
[[0,79,2],[4,83,2],[6,79,2],[10,74,3]],
[[0,80,2],[4,83,2],[6,80,2],[10,76,4]],
];
const ACC = [1,0,0,0.6,0,0,1,0, 0,0.6,1,0,0,0.6,0,0];
return { name:'OVERDRIVE PROTOCOL 过载协议', bpm:150, loop:32, fn(e) {
const b=e.b, s=e.s, ci=b%4, ch=CH[ci], r=RT[ci];
const half=b>=16&&b<20, bld=b>=20&&b<24, peak=b>=24;
if (half) {
if (s===0) bsyn.kick(e.t, 0.44);
if (s===8) bsyn.snare(e.t, 0.22);
if (s%4===2) bsyn.hat(e.t, 0.045, true);
} else {
if (s%4===0) bsyn.kick(e.t, 0.44);
if (peak && s===14 && b%2===1) bsyn.kick(e.t, 0.28);
if (s===4||s===12) bsyn.snare(e.t, peak?0.21:0.18);
bsyn.hat(e.t, s%2?(peak?0.028:0.016):(s%4===0?0.045:0.03), peak&&s===10);
if (b%4===3 && s>=12) bsyn.snare(e.t, 0.07+(s-12)*0.032);
}
if (bld) {
if (s%2===0) bsyn.snare(e.t, 0.05+(b-20)*0.028+s*0.004);
if (b===20 && s===0) bsyn.riser(e.t, e.sd*64, 0.05);
}
if (s===0 && b%4===0 && (peak||b%8===0)) bsyn.crash(e.t, 0.12);
if (!half) {
const a = ACC[s];
if (a) bsyn.bass(e.t, r+12+(s===6?12:(s===10?7:0)), e.sd*(a===1?1.6:1.1), 0.07*a+0.018, a===1);
if (s===0) bsyn.sub(e.t, r, e.sd*3.5, 0.068);
} else {
if (s===0) { bsyn.sub(e.t, r, e.sd*14, 0.075); bsyn.bass(e.t, r+12, e.sd*12, 0.045); }
if (s===11) bsyn.pluck(e.t, r+25, e.sd*2, 0.038);
}
if (!half && (s===3||s===11)) bsyn.stab(e.t, ch.map(x=>x+12), e.sd*1.5, peak?0.042:0.032);
if ((b>=8&&b<16) || peak) {
for (const nt of MEL[ci]) if (nt[0]===s) {
bsyn.lead(e.t, nt[1], nt[2]*e.sd, 0.05, true);
if (peak) bsyn.lead(e.t, nt[1]-12, nt[2]*e.sd, 0.02, true);
}
}
if (half && s===0) bsyn.pad(e.t, ch, e.sd*15, 0.032);
}};
})(),
];
class BGMPlayer {
constructor(diff) {
this.playing = false;
this.step = 0;
this.nextT = 0;
this.setDifficulty(diff);
}
setDifficulty(diff) {
this.cfg = BGM_TRACKS[diff];
this.stepDur = 60 / this.cfg.bpm / 4;
if (bsyn.ready) bsyn.setTempo(this.cfg.bpm);
}
start() {
bsyn.init();
bsyn.setTempo(this.cfg.bpm);
this.playing = true;
this.step = 0;
if (sound.ctx) this.nextT = sound.ctx.currentTime + 0.08;
}
stop() { this.playing = false; }
update() {
if (!this.playing || !sound.ctx) return;
if (soundMuted || !sound.bgmEnabled) {
this.nextT = sound.ctx.currentTime + 0.06;
return;
}
bsyn.init();
const ct = sound.ctx.currentTime;
if (this.nextT < ct - 0.12) this.nextT = ct + 0.02;
let n = 0;
while (this.nextT < ct + 0.16 && n < 64) {
const s = this.step & 15;
const b = (this.step >> 4) % this.cfg.loop;
try {
this.cfg.fn({ t: this.nextT, s: s, b: b, sd: this.stepDur });
} catch (_) {}
this.step++;
this.nextT += this.stepDur;
n++;
}
}
}
// ============================================================
// 原版物理常量（换算自 GD 反编译值，单位：格/秒）
// gravity 0.958199 u/f² → 114.98 | jump 11.180032 u/f → 22.36
// ============================================================
const PHYS = {
G: 114.98, // 方块重力
VJ: 22.36, // 方块跳跃初速
MAXFALL: 26.0, // 下落终端速度
ROT: 463, // 空中旋转 °/s（180°/次跳跃）
SHIP_G: 46, // 飞船下落加速度
SHIP_DECEL: 69, // 飞船上升不按时减速
SHIP_THRUST: 62, // 飞船推力
SHIP_VMAX_UP: 16.0, // 8.0 u/f
SHIP_VMAX_DN: 12.8, // 6.4 u/f
BALL_G: 68.99, // 0.6x
UFO_VJ: 16.1, // 0.72x 跳跃
PAD_Y: 32.0, // 黄垫 16 u/f
PAD_P: 21.1, // 粉垫
PAD_B: 24.0, // 蓝垫（换重力）
ORB_Y: 22.36, // 黄球环
ORB_P: 16.3, // 粉球环 0.73x
ORB_B: 11.2, // 蓝球环（换重力冲量）
ORB_G: 22.36, // 绿球环（换重力+跳）
HAZ_HALF: 0.255, // 玩家危险判定半宽（原版内缩碰撞箱）
WAVE_HAZ: 0.20,
CEIL: 13 // 世界顶（非方块模式钳制）
};
const MODES = { CUBE: 0, SHIP: 1, BALL: 2, UFO: 3, WAVE: 4 };
const MODE_NAME = ['CUBE', 'SHIP', 'BALL', 'UFO', 'WAVE'];
const LEVEL_LEN = 640; // 32 小节 × 20 格（每拍 5 格）
const DT = 1 / 120; // 固定物理步长（确定性）
// ============================================================
// 存档
// ============================================================
const SAVE_KEY = 'gd_web_v1';
function loadSave() {
try {
const s = JSON.parse(localStorage.getItem(SAVE_KEY));
if (s && s.lv && s.lv.length === 3) return s;
} catch (_) {}
return { lv: [0,1,2].map(() => ({ best: 0, pbest: 0, att: 0, jumps: 0, coins: [false,false,false], done: false })),
opt: { music: true, sfx: true } };
}
const save = loadSave();
function persist() { try { localStorage.setItem(SAVE_KEY, JSON.stringify(save)); } catch (_) {} }
// ============================================================
// 关卡 DSL —— 每小节 20 列，节拍位于第 0/5/10/15 列
// ============================================================
function parseLevel(def) {
const L = {
name: def.name, sub: def.sub, stars: def.stars, track: def.track,
bpm: def.bpm, speed: def.bpm / 60 * 5,
length: LEVEL_LEN, colorKeys: def.colorKeys,
solids: [], cellSet: new Set(),
solidCols: new Map(), hazCols: new Map(), itemCols: new Map(),
hazards: [], items: [], portals: [], coins: [], checks: [], pits: new Set()
};
let itemId = 0, coinId = 0;
function colPush(map, c0, c1, obj) {
for (let c = Math.floor(c0); c <= Math.floor(c1); c++) {
if (!map.has(c)) map.set(c, []);
map.get(c).push(obj);
}
}
function addSolid(x0, x1, y0, y1, slab) {
const s = { x0, x1, y0, y1, slab: !!slab };
L.solids.push(s);
colPush(L.solidCols, x0, x1 - 0.001, s);
if (!slab) for (let cx = x0; cx < x1; cx++)
for (let cy = y0; cy < y1; cy++) L.cellSet.add(cx + ',' + cy);