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
113 lines
3.8 KiB
JavaScript
113 lines
3.8 KiB
JavaScript
/* 贪蛇出动 - 蛇实体：移动/转向/生长/路径采样 */
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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 = GS.U;
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class Snake {
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constructor(opts) {
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this.id = opts.id;
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this.name = opts.name;
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this.isPlayer = !!opts.isPlayer;
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this.color = opts.color;
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this.skin = opts.skin || 0; // 0 纯色 1 条纹
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this.angle = opts.angle != null ? opts.angle : U.rand(0, Math.PI * 2);
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this.targetAngle = this.angle;
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this.turnRate = this.isPlayer ? GS.CFG.turnRate : GS.CFG.botTurnRate;
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this.score = opts.score || GS.CFG.startScore;
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this.dead = false;
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this.boosting = false;
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this.shield = false; // 护盾：抵挡一次致命碰撞
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this.invincibleUntil = 0; // 无敌时间戳（火箭/复活保护）
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this.magnetUntil = 0; // 磁铁截止
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this.kills = 0;
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this.coins = 0; // 本局吃到的金币数
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this.lucky = 0; // 本局幸运星
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// 路径：密集头轨迹点
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this.path = [{ x: opts.x, y: opts.y }];
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this.pathLen = 0;
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this._segs = [];
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this._segsDirty = true;
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this.wobble = U.rand(0, Math.PI * 2); // 身体摆动相位
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}
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get head() { return this.path[this.path.length - 1]; }
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// 半径随分数增长
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get radius() { return U.clamp(7 + Math.sqrt(Math.max(0, this.score)) * 0.32, 7, 30); }
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// 身体节数
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get segCount() { return Math.floor(10 + this.score / 6); }
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get spacing() { return Math.max(5, this.radius * 0.5); }
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get speed() { return this.boosting ? GS.CFG.boostSpeed : GS.CFG.baseSpeed; }
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invincible(now) { return now < this.invincibleUntil; }
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update(dt, now) {
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if (this.dead) return;
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// 转向限速
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const da = U.normAngle(this.targetAngle - this.angle);
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const maxTurn = this.turnRate * dt;
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this.angle += U.clamp(da, -maxTurn, maxTurn);
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const sp = this.speed;
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const h = this.head;
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const nx = h.x + Math.cos(this.angle) * sp * dt;
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const ny = h.y + Math.sin(this.angle) * sp * dt;
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this.path.push({ x: nx, y: ny });
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this.pathLen += sp * dt;
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// 裁剪路径：保留足够长度
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const need = this.segCount * this.spacing + this.radius * 4;
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while (this.path.length > 2 && this.pathLen > need) {
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const d = U.dist(this.path[0].x, this.path[0].y, this.path[1].x, this.path[1].y);
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if (this.pathLen - d < need) break;
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this.pathLen -= d;
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this.path.shift();
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}
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this._segsDirty = true;
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this.wobble += dt * (this.boosting ? 14 : 9);
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}
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// 从头部沿路径每隔 spacing 采样一节（不修改原路径）
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segments() {
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if (!this._segsDirty && this._segs.length) return this._segs;
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const segs = [{ x: this.head.x, y: this.head.y }];
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const n = this.segCount;
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const spacing = this.spacing;
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let acc = 0; // 自上一个采样点起已走过但不足 spacing 的距离
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for (let i = this.path.length - 1; i > 0 && segs.length < n; i--) {
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let ax = this.path[i].x, ay = this.path[i].y;
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const b = this.path[i - 1];
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let d = U.dist(ax, ay, b.x, b.y);
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if (d < 1e-9) continue;
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while (acc + d >= spacing && segs.length < n) {
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const t = (spacing - acc) / d;
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const px = ax + (b.x - ax) * t;
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const py = ay + (b.y - ay) * t;
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segs.push({ x: px, y: py });
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d -= (spacing - acc);
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ax = px; ay = py;
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acc = 0;
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}
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acc += d;
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}
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this._segs = segs;
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this._segsDirty = false;
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return segs;
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}
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grow(v) { this.score += v; }
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// 死亡：返回尸体坐标（用于掉币）
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die() {
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this.dead = true;
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return this.segments().slice();
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}
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}
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GS.Snake = Snake;
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})();
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