yangxiangyuan
6dc79a2c12
- 私人剪贴板新增限时直通URL生成功能 - doc_cloud_keeper新增标题复制按钮 - 新增贪蛇出动游戏工具 - 新增OSS中转直链工具 - 添加批量抽帧测试脚本
70 lines
2.4 KiB
JavaScript
70 lines
2.4 KiB
JavaScript
/* 贪蛇出动 - 通用工具函数 */
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(function () {
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'use strict';
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window.GS = window.GS || {};
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const U = {};
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GS.U = U;
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U.rand = (a, b) => a + Math.random() * (b - a);
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U.randInt = (a, b) => Math.floor(U.rand(a, b + 1));
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U.pick = arr => arr[Math.floor(Math.random() * arr.length)];
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U.clamp = (v, a, b) => Math.max(a, Math.min(b, v));
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U.dist2 = (x1, y1, x2, y2) => { const dx = x2 - x1, dy = y2 - y1; return dx * dx + dy * dy; };
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U.dist = (x1, y1, x2, y2) => Math.sqrt(U.dist2(x1, y1, x2, y2));
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// 角度归一化到 [-PI, PI]
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U.normAngle = a => {
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while (a > Math.PI) a -= Math.PI * 2;
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while (a < -Math.PI) a += Math.PI * 2;
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return a;
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};
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// 数字格式化：>=1e6 显示为 "1,194k"，否则千分位
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U.fmt = n => {
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n = Math.floor(n);
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if (n >= 1e6) return Math.floor(n / 1000).toLocaleString('en-US') + 'k';
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return n.toLocaleString('en-US');
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};
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// 北京时间日期串 YYYY-MM-DD（今日最佳用）
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U.todayBJ = () => {
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const d = new Date(Date.now() + (8 * 60 + new Date().getTimezoneOffset()) * 60000);
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const m = String(d.getMonth() + 1).padStart(2, '0');
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const day = String(d.getDate()).padStart(2, '0');
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return d.getFullYear() + '-' + m + '-' + day;
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};
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U.nowStr = () => {
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const d = new Date();
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const p = x => String(x).padStart(2, '0');
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return d.getFullYear() + '-' + p(d.getMonth() + 1) + '-' + p(d.getDate()) + ' ' +
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p(d.getHours()) + ':' + p(d.getMinutes()) + ':' + p(d.getSeconds());
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};
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// 简单空间哈希网格（金币拾取/碰撞加速）
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class Grid {
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constructor(cell) { this.cell = cell; this.m = new Map(); }
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clear() { this.m.clear(); }
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_key(cx, cy) { return cx + ',' + cy; }
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insert(obj) {
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const cx = Math.floor(obj.x / this.cell), cy = Math.floor(obj.y / this.cell);
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const k = this._key(cx, cy);
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let arr = this.m.get(k);
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if (!arr) { arr = []; this.m.set(k, arr); }
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arr.push(obj);
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}
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query(x, y, r) {
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const out = [];
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const c0 = Math.floor((x - r) / this.cell), c1 = Math.floor((x + r) / this.cell);
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const r0 = Math.floor((y - r) / this.cell), r1 = Math.floor((y + r) / this.cell);
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for (let cx = c0; cx <= c1; cx++) for (let cy = r0; cy <= r1; cy++) {
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const arr = this.m.get(this._key(cx, cy));
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if (arr) for (const o of arr) out.push(o);
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}
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return out;
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}
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}
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U.Grid = Grid;
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})();
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