fix: 优化跳跃和下落手感
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@@ -6,11 +6,16 @@ import * as S from './sprites.js';
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import { T } from './level.js';
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export const PHY = {
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GRAV: 0.4,
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GRAV: 0.25, // 上升段重力：小 = 跳跃飘
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GRAV_FALL: 0.32, // 下落段重力：小 = 下坠轻、飘落感（0.35→0.32，用户反馈"下落有点沉"）
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GRAV_DJ: 0.35, // 二段跳上升段专属重力：比 GRAV 稍重——初速 6.7 与一段 6.6 一致，配 0.35 才能又冲（不起悬停）又只有 4.5 格总高
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MAXFALL: 9,
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JUMP: 8.5,
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DJUMP: 7.6,
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HSPD: 3,
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JUMP: 6.6,
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DJUMP: 6.7, // 二段跳冲量：起跳初速与一段 JUMP 6.6 几乎一致（起跳"嘭"感同款）；顶点接二段总高 = 4.51 格
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DJ_INERTIA: 0, // 二段跳时下落速度对冲量的抵消比例：0=任何时机接二段都满力起跳（初速恒 -DJUMP，同 IWBT 原版），
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// 1=全额抵消（旧 bug：顶点晚几帧接二段直接归零）。0.35/0.5 都被用户反馈"好沉+短"——起跳初速被下落速度
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// 吃掉才是"沉"的根源（初速从 6.7 掉到 3~4，起跳那一下没劲），与上升重力无关。
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HSPD: 2.6,
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WATER_GRAV: 0.16,
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WATER_FALL: 2.6,
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WATER_RISE: 0.42,
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@@ -23,6 +28,7 @@ export const PHY = {
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SLIDE_BRAKE: 0.45, // 滑行中按反向键的刹车
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SLIDE_MIN: 0.35, // 冰面上攒到多大速度才算进入滑行状态
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SLIDE_STOP: 0.05, // 低于此速度惯性结束
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ICE_TOP: 1.6, // 冰面最高速度 = HSPD × ICE_TOP（调大=冰上能滑得更快，留更猛的惯性）
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};
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export class Player {
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@@ -38,12 +44,12 @@ export class Player {
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this.x = sp.x; this.y = sp.y;
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this.vx = 0; this.vy = 0;
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this.jumps = 0;
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this.djUp = false;
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this.grounded = false;
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this.facing = 1;
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this.alive = true;
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this.dead = false;
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this.deadT = 0;
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this.squash = 1;
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this.inWater = false;
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this.animT = 0;
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this.shootCool = 0;
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@@ -78,7 +84,8 @@ export class Player {
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const sp = this.savePoint || L.spawn;
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this.x = sp.x; this.y = sp.y;
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this.vx = 0; this.vy = 0; this.jumps = 0;
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this.squash = 1; this.shootCool = 0; this.sliding = false;
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this.djUp = false;
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this.shootCool = 0; this.sliding = false;
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this.deadT = 0;
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// 安全兜底：万一重生点被地形/消失块堵住，向上顶出，别一复活就卡死
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let guard = 0;
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@@ -107,7 +114,7 @@ export class Player {
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if (moveL && !moveR) target = -PHY.HSPD;
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else if (moveR && !moveL) target = PHY.HSPD;
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const ICE_MAX = PHY.HSPD * 1.35;
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const ICE_MAX = PHY.HSPD * PHY.ICE_TOP;
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const decel = f => {
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if (Math.abs(this.vx) <= f) this.vx = 0;
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else this.vx -= sgn(this.vx) * f;
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@@ -155,18 +162,22 @@ export class Player {
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if (Input.is('jump')) this.vy -= PHY.WATER_RISE;
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if (Input.is('down')) this.vy += 0.25;
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this.vy = clamp(this.vy, -3.2, PHY.WATER_FALL);
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this.jumps = 0;
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this.jumps = 0; this.djUp = false;
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} else {
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if (Input.hit('jump')) {
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if (this.grounded || this.jumps === 0) {
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this.vy = -PHY.JUMP; this.jumps = 1; this.grounded = false;
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this.squash = 1.28;
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// 不再做起跳拉伸：空中保持身体比例，避免跳跃时视觉上下晃动
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sfx.jump();
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L.particles.spawn(this.cx, this.y + this.h, 5,
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{ colors: ['#fff', '#cfcfe0'], speed: 1.6, life: 16, size: 2, dir: -Math.PI / 2, spread: 2 });
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} else if (this.jumps === 1) {
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this.vy = -PHY.DJUMP; this.jumps = 2;
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this.squash = 1.22;
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// 二段跳冲量叠减当前速度：上升中按 = 原版语义（直接获得 -DJUMP）；
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// 下落中按 = 下落惯性只抵消一部分冲量（DJUMP 前乘 DJ_INERTIA）——
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// 全额抵消会让"满力一段跳到顶点、晚几帧接二段"的二段塌到接近 0（非常短），
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// 只抵消一半则顶点附近接二段保持满力，摔得快时才明显变弱
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this.vy = Math.max(this.vy, 0) * PHY.DJ_INERTIA - PHY.DJUMP; this.jumps = 2;
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this.djUp = this.vy < 0; // 二段上升段启用专属轻重力（与一段同款飘）
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sfx.djump();
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L.particles.spawn(this.cx, this.cy, 10,
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{ colors: ['#fff', '#9ad8ff'], speed: 2.2, life: 20, size: 2, spread: Math.PI * 2 });
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@@ -174,7 +185,9 @@ export class Player {
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}
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// 可变跳跃高度
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if (!Input.is('jump') && this.vy < -3) this.vy = -3;
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this.vy = Math.min(this.vy + PHY.GRAV, PHY.MAXFALL);
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// 上升轻、下落重：分手感。二段上升段用更轻的 GRAV_DJ（初速小，同款飘）
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this.vy = Math.min(this.vy + (this.vy < 0 ? (this.djUp ? PHY.GRAV_DJ : PHY.GRAV) : PHY.GRAV_FALL), PHY.MAXFALL);
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if (this.djUp && this.vy >= 0) this.djUp = false; // 二段到顶，交回普通重力
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}
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// ---- 站在移动平台上则跟随 ----
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@@ -226,10 +239,8 @@ export class Player {
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const wasAir = !this.grounded;
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this.grounded = hitGround || (this.vy === 0 && L.solidRect(this.x, this.y + 1, this.w, this.h));
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if (this.grounded) {
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if (wasAir) { this.squash = 0.72; }
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this.jumps = 0;
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this.jumps = 0; this.djUp = false;
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}
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this.squash += (1 - this.squash) * 0.22;
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// ---- 滑行反馈：超速滑行（冰上，或刚滑出冰块仍带惯性）时脚下溅起冰屑 ----
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if (this.sliding && this.grounded && Math.abs(this.vx) > PHY.HSPD && this.animT % 5 === 0) {
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