679 lines
25 KiB
JavaScript
679 lines
25 KiB
JavaScript
// 关卡解析与运行时：ASCII 网格 -> tiles + 实体 + 事件
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import { TILE, clamp, overlap, hashNoise } from './util.js';
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import * as S from './sprites.js';
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import { sfx } from './audio.js';
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import { Particles } from './particles.js';
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import { Boss } from './boss.js';
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export const T = {
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EMPTY: 0, BLOCK: 1, GRASS: 2, BRICK: 3, METAL: 4,
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ICE: 5, WATER: 6, ONEWAY: 7, KILLER: 8, VANISH: 9,
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SPIKE_U: 10, SPIKE_D: 11, SPIKE_L: 12, SPIKE_R: 13,
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};
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const SOLID = { 1: 1, 2: 1, 3: 1, 4: 1, 5: 1, 9: 1 };
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const DEADLY = { 8: 1, 10: 1, 11: 1, 12: 1, 13: 1 };
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/** ASCII 字符 -> tile */
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export const CHAR2TILE = {
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'#': T.BLOCK, '@': T.GRASS, '=': T.BRICK, 'M': T.METAL,
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'%': T.ICE, '~': T.WATER, '-': T.ONEWAY, '*': T.KILLER, 'V': T.VANISH,
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'^': T.SPIKE_U, 'v': T.SPIKE_D, '<': T.SPIKE_L, '>': T.SPIKE_R,
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};
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/** ASCII 字符 -> 实体类型 */
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const CHAR2ENT = {
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S: 'spawn', G: 'save', X: 'goal', P: 'gun', F: 'apple', J: 'jumpref',
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W: 'warp', T: 'sign', O: 'turret', B: 'boss', D: 'dropspike',
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C: 'camzone', '!': 'trigger',
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};
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const ESIZE = {
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spawn: [16, 26], save: [20, 22], goal: [30, 42], gun: [28, 24], apple: [18, 20],
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jumpref: [26, 26], warp: [28, 28], sign: [30, 26], turret: [32, 32],
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boss: [64, 64], dropspike: [32, 32], camzone: [96, 96], trigger: [32, 32],
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};
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export class Level {
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constructor(data) {
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this.data = data;
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this.name = data.name || 'STAGE';
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this.type = data.type || 'jump';
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this.parse(data);
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this.particles = new Particles();
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this.reset(true);
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}
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// ---------------- 解析 ----------------
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parse(data) {
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const rows = data.grid || [];
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this.h = rows.length || 19;
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this.w = data.width || Math.max(...rows.map(r => r.length), 25);
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this.pxW = this.w * TILE;
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this.pxH = this.h * TILE;
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this.tiles = [];
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const srcEntities = [];
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const order = { warp: 0, boss: 0, sign: 0, turret: 0, camzone: 0, trigger: 0 };
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for (let y = 0; y < this.h; y++) {
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const line = rows[y] || '';
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const row = [];
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for (let x = 0; x < this.w; x++) {
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const ch = line[x] || ' ';
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if (CHAR2TILE[ch] !== undefined) {
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row.push(CHAR2TILE[ch]);
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} else if (CHAR2ENT[ch] !== undefined) {
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const type = CHAR2ENT[ch];
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const [ew, eh] = ESIZE[type];
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const idx = order[type] !== undefined ? order[type]++ : 0;
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srcEntities.push({ type, idx, tx: x, ty: y, ch });
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row.push(T.EMPTY);
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} else row.push(T.EMPTY);
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}
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this.tiles.push(row);
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}
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// 构建实体
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this.srcEntities = srcEntities;
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this.moversSrc = data.movers || [];
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this.eventSrc = data.events || [];
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this.msgs = data.messages || [];
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this.bossSrc = data.bosses || [];
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this.warpSrc = data.warps || [];
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this.turretSrc = data.turrets || [];
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this.camSrc = data.camzones || [];
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this.spawnExtra = data.spawn || null;
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this.hint = data.hint || '';
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this.bgTheme = data.bg || (this.type === 'boss' ? 'boss' : this.type === 'troll' ? 'troll' : this.type === 'endur' ? 'endur' : 'jump');
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}
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/** 完整重置（死亡 / 重开） */
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reset(full = false) {
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// tiles 状态（vanish 等）
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if (full) this.deathMarks = []; // 死亡血迹只在整关重开时清空，复活后保留
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this.vanish = new Map();
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this.bullets = [];
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this.ebullets = [];
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this.entities = [];
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this.movers = [];
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this.bosses = [];
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this.events = [];
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this.time = 0;
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this.toast = null;
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this.toastT = 0;
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this.particles?.clear();
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this.shake = 0;
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this.beat = false;
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// 实体实例化
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let saveNo = 0;
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for (const s of this.srcEntities) {
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const [ew, eh] = ESIZE[s.type];
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const e = {
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type: s.type, idx: s.idx,
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tx: s.tx, ty: s.ty,
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x: s.tx * TILE + (TILE - ew) / 2,
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y: s.ty * TILE + (TILE - eh),
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w: ew, h: eh,
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active: false, dead: false, t: 0,
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};
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if (s.type === 'goal') e.y = s.ty * TILE + TILE - eh;
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if (s.type === 'save') { e.fake = false; e.no = ++saveNo; }
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if (s.type === 'sign') e.text = this.msgs[e.idx] || '...';
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if (s.type === 'turret') {
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const cfg = this.turretSrc[e.idx] || {};
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e.dir = cfg.dir || 'left';
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e.period = cfg.period || 90;
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e.speed = cfg.speed || 2.4;
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e.timer = cfg.offset || 0;
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e.kind = cfg.kind || 'ball';
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}
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if (s.type === 'warp') {
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const cfg = this.warpSrc[e.idx] || {};
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// 自制多面地图：门的目标直接挂在 door.to 上
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// door.to 可以是跨面 {face, door}（自制门），或原有 'spawn' / {x,y}（内置同关传送）
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const door = (this.data.doors || []).find(d => d.tx === s.tx && d.ty === s.ty);
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e.doorId = door ? door.id : e.idx;
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e.pair = cfg.pair !== undefined ? cfg.pair : (e.idx % 2 === 0 ? e.idx + 1 : e.idx - 1);
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e.to = (door && door.to) ? door.to : (cfg.to || null);
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e.cool = 0;
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e.hidden = !!cfg.hidden;
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}
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if (s.type === 'camzone') {
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const cfg = this.camSrc[e.idx] || {};
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e.w = (cfg.w || 3) * TILE; e.h = (cfg.h || 3) * TILE;
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e.x = s.tx * TILE; e.y = s.ty * TILE;
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e.mode = cfg.mode || 'lock'; // lock | zoom | follow-off
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e.zoom = cfg.zoom || 1;
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e.lx = cfg.lx !== undefined ? cfg.lx * TILE : null;
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e.ly = cfg.ly !== undefined ? cfg.ly * TILE : null;
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}
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if (s.type === 'dropspike') {
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e.falling = false; e.vy = 0; e.homeY = e.y;
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e.triggerX = (this.srcEntities.length ? 0 : 0);
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}
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if (s.type === 'boss') {
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const cfg = this.bossSrc[e.idx] || { kind: 'guy' };
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e.kind = cfg.kind || 'guy';
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e.hp = cfg.hp || 40;
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e.w = cfg.w || 64; e.h = cfg.h || 64;
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e.x = s.tx * TILE + TILE / 2 - e.w / 2;
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e.y = s.ty * TILE + TILE - e.h;
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}
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this.entities.push(e);
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}
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// 移动平台
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for (const m of this.moversSrc) {
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const path = (m.path || []).map(p => ({ x: p[0] * TILE, y: p[1] * TILE }));
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const a = path[0] || { x: m.x * TILE, y: m.y * TILE };
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this.movers.push({
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x: a.x, y: a.y,
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w: (m.w || 3) * TILE, h: (m.h || 1) * TILE,
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path, i: 0, dir: 1, speed: m.speed || 1.2, t: 0,
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mode: m.mode || 'loop', // loop | pingpong
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dx: 0, dy: 0,
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ax: a.x, ay: a.y, aw: (m.w || 3) * TILE, ah: (m.h || 1) * TILE,
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bx: (path[1] || a).x, by: (path[1] || a).y,
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});
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}
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// 事件（坑向触发器）
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for (const ev of this.eventSrc) {
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this.events.push({
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x: ev.x * TILE, y: ev.y * TILE, w: (ev.w || 1) * TILE, h: (ev.h || 1) * TILE,
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once: ev.once !== false, fired: false,
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actions: ev.actions || [], hidden: ev.hidden !== false,
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});
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}
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// 补齐未在 ASCII 中放置的摄像头区域（camzones 数组独立定义）
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const camPlaced = this.srcEntities.filter(s => s.type === 'camzone').length;
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for (let i = camPlaced; i < this.camSrc.length; i++) {
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const cfg = this.camSrc[i];
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this.entities.push({
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type: 'camzone', idx: i, tx: cfg.x, ty: cfg.y,
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x: cfg.x * TILE, y: cfg.y * TILE,
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w: (cfg.w || 3) * TILE, h: (cfg.h || 3) * TILE,
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mode: cfg.mode || 'lock', zoom: cfg.zoom || 1,
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lx: cfg.lx !== undefined ? cfg.lx * TILE : null,
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ly: cfg.ly !== undefined ? cfg.ly * TILE : null,
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active: false, dead: false, t: 0,
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});
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}
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// BOSS
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for (const e of this.entities) {
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if (e.type !== 'boss') continue;
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this.bosses.push(new Boss(this, e));
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}
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// 出生点
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const sp = this.entities.find(e => e.type === 'spawn');
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this.spawn = sp
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? { x: sp.x + sp.w / 2 - 5.5, y: sp.y + sp.h - 21 }
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: (this.spawnExtra ? { x: this.spawnExtra[0] * TILE, y: this.spawnExtra[1] * TILE } : { x: 40, y: 40 });
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// 总苹果数 / 存档点数
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this.totalApples = this.entities.filter(e => e.type === 'apple').length;
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this.totalSaves = saveNo;
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}
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/** 死亡后的软重置：保留存档点与已拾取道具，其余复位 */
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softReset() {
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this.vanish.clear();
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if (this.vanishT) this.vanishT.clear();
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this.bullets.length = 0;
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this.ebullets.length = 0;
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this.particles?.clear();
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this.shake = 0;
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for (const m of this.movers) {
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const a = m.path[0];
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if (a) { m.x = a.x; m.y = a.y; m.i = 0; }
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m.dx = m.dy = 0;
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const nx = m.path[1] || a;
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m.ax = m.x; m.ay = m.y; m.bx = nx?.x ?? m.x; m.by = nx?.y ?? m.y;
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}
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for (const e of this.entities) {
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if (e.type === 'dropspike') {
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if (e.temp) { e.dead = true; continue; }
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e.y = e.homeY; e.falling = false; e.vy = 0; e.landed = false; e.landT = 0;
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}
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if (e.type === 'warp') e.cool = 0;
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}
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this.entities = this.entities.filter(e => !e.dead);
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for (const ev of this.events) ev.fired = false;
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for (const b of this.bosses) {
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b.hp = b.maxHp; b.dead = false; b.deathT = 0; b.bodyKill = true;
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b.t = 0; b.state = 'idle'; b.stateT = 0; b.phase = 1;
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b.x = b.homeX; b.y = b.homeY; b.vx = 0; b.vy = 0;
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}
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}
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// 死亡标记：在死亡地点留下一个常驻「红叉」（IWBTG 风格死亡指示）。
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// 只保留上一次死亡的红叉：新增前先清空，多次死亡不会累积。
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addDeathMark(x, y) {
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this.deathMarks.length = 0;
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this.deathMarks.push({ x, y });
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}
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drawDeathMark(ctx, dm) {
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const s = 4; // 红叉半边长（< kid 的 11×21，整体约 8px）
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ctx.lineCap = 'round';
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// 深色描边，保证在任意背景下都清晰
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ctx.lineWidth = 3;
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ctx.strokeStyle = 'rgba(0,0,0,0.55)';
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ctx.beginPath();
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ctx.moveTo(dm.x - s, dm.y - s); ctx.lineTo(dm.x + s, dm.y + s);
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ctx.moveTo(dm.x + s, dm.y - s); ctx.lineTo(dm.x - s, dm.y + s);
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ctx.stroke();
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// 红色主体
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ctx.lineWidth = 2;
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ctx.strokeStyle = '#ff2535';
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ctx.beginPath();
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ctx.moveTo(dm.x - s, dm.y - s); ctx.lineTo(dm.x + s, dm.y + s);
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ctx.moveTo(dm.x + s, dm.y - s); ctx.lineTo(dm.x - s, dm.y + s);
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ctx.stroke();
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}
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// ---------------- 查询 ----------------
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tileAt(tx, ty) {
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if (tx < 0 || ty < 0 || tx >= this.w || ty >= this.h) return ty < 0 ? T.EMPTY : T.BLOCK;
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return this.tiles[ty][tx];
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}
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pxTile(px, py) { return this.tileAt(Math.floor(px / TILE), Math.floor(py / TILE)); }
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isSolidTile(t, tx, ty) {
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if (!SOLID[t]) return false;
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if (t === T.VANISH) {
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const st = this.vanishState(tx, ty);
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return st !== 2;
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}
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return true;
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}
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vanishState(tx, ty) { return this.vanish.get(ty * 1000 + tx) ?? 0; }
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setVanish(tx, ty, st) { this.vanish.set(ty * 1000 + tx, st); }
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/** 矩形是否与实心地形相交（可指定忽略单向平台的下落判定） */
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solidRect(x, y, w, h, opts = {}) {
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const x0 = Math.floor(x / TILE), x1 = Math.floor((x + w - 0.001) / TILE);
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const y0 = Math.floor(y / TILE), y1 = Math.floor((y + h - 0.001) / TILE);
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for (let ty = y0; ty <= y1; ty++) {
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for (let tx = x0; tx <= x1; tx++) {
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const t = this.tileAt(tx, ty);
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if (t === T.ONEWAY) {
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if (!opts.dropThrough && opts.prevBottom !== undefined && opts.prevBottom <= ty * TILE + 6) {
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// 从上方落下：只有当前底部穿过平台面时才碰撞
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if (y + h <= ty * TILE + 8) continue;
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if (opts.prevBottom > ty * TILE + 2) continue;
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return true;
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}
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continue;
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}
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if (this.isSolidTile(t, tx, ty)) return true;
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}
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}
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// 移动平台
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for (const m of this.movers) {
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if (m.gone) continue;
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if (x < m.x + m.w && x + w > m.x && y < m.y + m.h && y + h > m.y) {
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if (opts.moverExclude === m) continue;
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return true;
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}
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}
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return false;
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}
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/** 致死判定（刺 / 美味水果 / 敌人子弹） */
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deadlyRect(x, y, w, h) {
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const x0 = Math.floor(x / TILE), x1 = Math.floor((x + w - 0.001) / TILE);
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const y0 = Math.floor(y / TILE), y1 = Math.floor((y + h - 0.001) / TILE);
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for (let ty = y0; ty <= y1; ty++) {
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for (let tx = x0; tx <= x1; tx++) {
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const t = this.tileAt(tx, ty);
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if (!DEADLY[t]) continue;
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const tr = spikeTri(t, tx * TILE, ty * TILE);
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if (triRectOverlap(tr.ax, tr.ay, tr.bx, tr.by, tr.cx, tr.cy, x, y, w, h)) return true;
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}
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}
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for (const e of this.entities) {
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if (e.type === 'dropspike' && e.falling) {
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const tr = spikeTri(T.SPIKE_L, e.x, e.y); // 与 drawDropSpike 的 dir=2（朝左）一致
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if (triRectOverlap(tr.ax, tr.ay, tr.bx, tr.by, tr.cx, tr.cy, x, y, w, h)) return true;
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}
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}
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for (const b of this.ebullets) {
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if (b.dead) continue;
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const r = { x: b.x, y: b.y, w: b.w, h: b.h };
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if (overlap({ x, y, w, h }, r)) return true;
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}
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for (const bs of this.bosses) {
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if (bs.dead || !bs.bodyKill) continue;
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if (overlap({ x, y, w, h }, bs)) return true;
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}
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return false;
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}
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waterRect(x, y, w, h) {
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const x0 = Math.floor(x / TILE), x1 = Math.floor((x + w - 0.001) / TILE);
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const y0 = Math.floor(y / TILE), y1 = Math.floor((y + h - 0.001) / TILE);
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for (let ty = y0; ty <= y1; ty++)
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for (let tx = x0; tx <= x1; tx++)
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if (this.tileAt(tx, ty) === T.WATER) return true;
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return false;
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}
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iceAtBottom(x, y, w, h) {
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const tx0 = Math.floor(x / TILE), tx1 = Math.floor((x + w - 1) / TILE);
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const ty = Math.floor((y + h + 1) / TILE);
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for (let tx = tx0; tx <= tx1; tx++) if (this.tileAt(tx, ty) === T.ICE) return true;
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return false;
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}
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// ---------------- 更新 ----------------
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update(dt, player, cam) {
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this.time += dt;
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const t = this.time;
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// 移动平台
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for (const m of this.movers) {
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if (!m.path.length) continue;
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const tgt = m.path[(m.i + 1) % m.path.length];
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const ox = m.x, oy = m.y;
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const dx = tgt.x - m.x, dy = tgt.y - m.y;
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const dist = Math.hypot(dx, dy);
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if (dist <= m.speed) {
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m.x = tgt.x; m.y = tgt.y;
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m.i = (m.i + 1) % m.path.length;
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} else {
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m.x += dx / dist * m.speed;
|
||
m.y += dy / dist * m.speed;
|
||
}
|
||
m.dx = m.x - ox; m.dy = m.y - oy;
|
||
const next = m.path[(m.i + 1) % m.path.length];
|
||
m.ax = m.x; m.ay = m.y; m.bx = next.x; m.by = next.y;
|
||
}
|
||
|
||
// 消失方块计时
|
||
for (const [key, st] of this.vanish) {
|
||
if (st === 0) continue;
|
||
const tt = (this.vanishT?.get(key) || 0) + 1;
|
||
this.vanishT = this.vanishT || new Map();
|
||
this.vanishT.set(key, tt);
|
||
if (st === 1 && tt > 55) { this.vanish.set(key, 2); this.vanishT.set(key, 0); }
|
||
else if (st === 2 && tt > 110) { this.vanish.set(key, 0); this.vanishT.set(key, 0); }
|
||
}
|
||
|
||
// 掉落刺
|
||
for (const e of this.entities) {
|
||
if (e.type !== 'dropspike') continue;
|
||
if (!e.falling) {
|
||
const px = player.x + player.w / 2;
|
||
if (Math.abs(px - (e.x + e.w / 2)) < 26 && Math.abs(player.y - e.y) < 260 && player.y > e.y) {
|
||
e.falling = true; e.vy = 0;
|
||
sfx.vanish();
|
||
}
|
||
} else if (e.landed) {
|
||
// 落地后插在地上，80 帧后碎掉（否则会永久堵死落脚点）
|
||
e.landT = (e.landT || 0) + 1;
|
||
if (e.landT > 80) { e.dead = true; e.falling = false; }
|
||
} else {
|
||
e.vy = Math.min(e.vy + 0.5, 11);
|
||
e.y += e.vy;
|
||
const ty = Math.floor((e.y + e.h) / TILE);
|
||
const tx = Math.floor((e.x + e.w / 2) / TILE);
|
||
if (this.isSolidTile(this.tileAt(tx, ty), tx, ty)) {
|
||
e.y = ty * TILE - e.h; e.vy = 0; e.landed = true; e.landT = 0;
|
||
this.shake = Math.max(this.shake, 5);
|
||
}
|
||
if (e.y > this.pxH + 100) e.dead = true;
|
||
}
|
||
}
|
||
|
||
// 炮台
|
||
for (const e of this.entities) {
|
||
if (e.type !== 'turret') continue;
|
||
e.t++;
|
||
if (e.t % (e.period || 90) === 0) {
|
||
const cx = e.x + e.w / 2, cy = e.y + e.h / 2;
|
||
let vx = 0, vy = 0;
|
||
if (e.dir === 'left') vx = -e.speed;
|
||
else if (e.dir === 'right') vx = e.speed;
|
||
else if (e.dir === 'up') vy = -e.speed;
|
||
else vy = e.speed;
|
||
if (e.kind === 'aim' && player.alive) {
|
||
const dx = (player.x + player.w / 2) - cx, dy = (player.y + player.h / 2) - cy;
|
||
const d = Math.hypot(dx, dy) || 1;
|
||
vx = dx / d * e.speed; vy = dy / d * e.speed;
|
||
}
|
||
this.ebullets.push({ x: cx - 4, y: cy - 4, w: 8, h: 8, vx, vy, dead: false, col: '#ff5c7a', life: 400 });
|
||
sfx.shoot();
|
||
}
|
||
}
|
||
|
||
// 敌人子弹
|
||
for (const b of this.ebullets) {
|
||
b.x += b.vx; b.y += b.vy; b.life--;
|
||
if (b.life <= 0) b.dead = true;
|
||
const tx = Math.floor((b.x + b.w / 2) / TILE), ty = Math.floor((b.y + b.h / 2) / TILE);
|
||
if (this.isSolidTile(this.tileAt(tx, ty), tx, ty)) {
|
||
b.dead = true;
|
||
this.particles.spawn(b.x + 4, b.y + 4, 4, { colors: ['#ff5c7a', '#fff'], speed: 2, life: 14 });
|
||
}
|
||
}
|
||
this.ebullets = this.ebullets.filter(b => !b.dead);
|
||
|
||
// 玩家子弹
|
||
for (const b of this.bullets) {
|
||
b.x += b.vx; b.y += b.vy; b.life--;
|
||
if (b.life <= 0) b.dead = true;
|
||
const tx = Math.floor((b.x + b.w / 2) / TILE), ty = Math.floor((b.y + b.h / 2) / TILE);
|
||
const tt = this.tileAt(tx, ty);
|
||
if (tt === T.BLOCK || tt === T.GRASS || tt === T.BRICK || tt === T.METAL) {
|
||
b.dead = true;
|
||
this.particles.spawn(b.x + 3, b.y + 3, 5, { colors: ['#fff6a0', '#ffb040'], speed: 2.4, life: 16 });
|
||
}
|
||
}
|
||
this.bullets = this.bullets.filter(b => !b.dead);
|
||
|
||
// 事件触发
|
||
for (const ev of this.events) {
|
||
if (ev.fired && ev.once) continue;
|
||
if (overlap(player, ev)) this.fireEvent(ev, player);
|
||
}
|
||
|
||
// 摄像机区域
|
||
this.camZone = null;
|
||
for (const e of this.entities) {
|
||
if (e.type !== 'camzone') continue;
|
||
if (overlap({ x: player.x + player.w / 2 - 1, y: player.y + player.h / 2 - 1, w: 2, h: 2 }, e)) {
|
||
this.camZone = e; break;
|
||
}
|
||
}
|
||
|
||
if (this.shake > 0) this.shake *= 0.86;
|
||
if (this.toastT > 0 && --this.toastT === 0) this.toast = null;
|
||
this.particles.update();
|
||
|
||
// 死亡红叉为常驻静态标记，无需逐帧演化，复活后仍保留
|
||
}
|
||
|
||
fireEvent(ev, player) {
|
||
ev.fired = true;
|
||
for (const a of ev.actions) {
|
||
if (a.type === 'msg') { this.showToast(a.text, a.dur || 150); }
|
||
else if (a.type === 'spikes') {
|
||
// 生成一排下落刺
|
||
for (let i = 0; i < (a.count || 5); i++) {
|
||
const x = (a.x + i * (a.gap || 1)) * TILE;
|
||
this.entities.push({
|
||
type: 'dropspike', x, y: (a.y || 0) * TILE, w: TILE, h: TILE,
|
||
falling: true, vy: 0, homeY: (a.y || 0) * TILE, t: 0, temp: true,
|
||
});
|
||
}
|
||
sfx.troll();
|
||
} else if (a.type === 'vanish') {
|
||
for (let i = 0; i < (a.count || 3); i++) {
|
||
const tx = (a.x + i), ty = a.y;
|
||
if (this.tileAt(tx, ty) === T.EMPTY) continue;
|
||
this.setVanish(tx, ty, 1);
|
||
this.vanishT = this.vanishT || new Map();
|
||
this.vanishT.set(ty * 1000 + tx, 0);
|
||
}
|
||
sfx.vanish();
|
||
} else if (a.type === 'warp') {
|
||
player.x = a.x * TILE; player.y = a.y * TILE;
|
||
player.vx = 0; player.vy = 0;
|
||
sfx.warp();
|
||
} else if (a.type === 'kill') { player.kill(); }
|
||
else if (a.type === 'shake') { this.shake = a.v || 10; }
|
||
}
|
||
}
|
||
|
||
showToast(text, dur = 150) { this.toast = text; this.toastT = dur; }
|
||
|
||
// ---------------- 绘制 ----------------
|
||
drawBg(ctx, cam, t) {
|
||
const g = ctx.createLinearGradient(0, 0, 0, cam.h);
|
||
const th = {
|
||
jump: ['#1a1830', '#0a0a14'],
|
||
endur: ['#101f24', '#080c10'],
|
||
boss: ['#2a1018', '#0d0810'],
|
||
troll: ['#221432', '#0b0812'],
|
||
custom: ['#141428', '#08080f'],
|
||
}[this.bgTheme] || ['#1a1830', '#0a0a14'];
|
||
g.addColorStop(0, th[0]); g.addColorStop(1, th[1]);
|
||
ctx.fillStyle = g;
|
||
ctx.fillRect(0, 0, cam.w, cam.h);
|
||
|
||
// 远景装饰（视差）
|
||
const px = -cam.x * 0.25, py = -cam.y * 0.15;
|
||
ctx.globalAlpha = 0.16;
|
||
ctx.fillStyle = '#ffffff';
|
||
for (let i = 0; i < 60; i++) {
|
||
const nx = hashNoise(i, 7) * 2000, ny = hashNoise(i, 13) * 900;
|
||
const sx = ((nx + px) % (cam.w + 200)) - 100;
|
||
const sy = ((ny + py) % (cam.h + 120)) - 60;
|
||
ctx.fillRect(sx, sy, 2, 2);
|
||
}
|
||
ctx.globalAlpha = 1;
|
||
|
||
// 网格
|
||
ctx.strokeStyle = 'rgba(255,255,255,.035)';
|
||
ctx.lineWidth = 1;
|
||
ctx.beginPath();
|
||
const off = TILE * 2;
|
||
const sx0 = -((cam.x % off));
|
||
const sy0 = -((cam.y % off));
|
||
for (let x = sx0; x < cam.w; x += off) { ctx.moveTo(x + .5, 0); ctx.lineTo(x + .5, cam.h); }
|
||
for (let y = sy0; y < cam.h; y += off) { ctx.moveTo(0, y + .5); ctx.lineTo(cam.w, y + .5); }
|
||
ctx.stroke();
|
||
}
|
||
|
||
draw(ctx, cam, t) {
|
||
const vx0 = Math.max(0, Math.floor(cam.x / TILE) - 1);
|
||
const vx1 = Math.min(this.w - 1, Math.ceil((cam.x + cam.w / (cam.zoom || 1)) / TILE) + 1);
|
||
const vy0 = Math.max(0, Math.floor(cam.y / TILE) - 1);
|
||
const vy1 = Math.min(this.h - 1, Math.ceil((cam.y + cam.h / (cam.zoom || 1)) / TILE) + 1);
|
||
|
||
ctx.save();
|
||
// 摄像机变换由外部处理
|
||
for (let ty = vy0; ty <= vy1; ty++) {
|
||
for (let tx = vx0; tx <= vx1; tx++) {
|
||
const v = this.tiles[ty][tx];
|
||
if (v === T.EMPTY) continue;
|
||
const x = tx * TILE, y = ty * TILE;
|
||
switch (v) {
|
||
case T.BLOCK: S.drawBlock(ctx, x, y, 0); break;
|
||
case T.GRASS: S.drawBlock(ctx, x, y, 1); break;
|
||
case T.BRICK: S.drawBlock(ctx, x, y, 2); break;
|
||
case T.METAL: S.drawBlock(ctx, x, y, 3); break;
|
||
case T.ICE: S.drawIce(ctx, x, y); break;
|
||
case T.WATER: S.drawWater(ctx, x, y, t); break;
|
||
case T.ONEWAY: S.drawOneWay(ctx, x, y); break;
|
||
case T.KILLER: S.drawKiller(ctx, x, y, t); break;
|
||
case T.VANISH: S.drawVanish(ctx, x, y, this.vanishState(tx, ty), t); break;
|
||
case T.SPIKE_U: S.drawSpike(ctx, x, y, 0, t); break;
|
||
case T.SPIKE_D: S.drawSpike(ctx, x, y, 1, t); break;
|
||
case T.SPIKE_L: S.drawSpike(ctx, x, y, 2, t); break;
|
||
case T.SPIKE_R: S.drawSpike(ctx, x, y, 3, t); break;
|
||
}
|
||
}
|
||
}
|
||
|
||
// 移动平台
|
||
for (const m of this.movers) S.drawMovingPlatform(ctx, m);
|
||
|
||
// 实体
|
||
for (const e of this.entities) {
|
||
if (e.dead) continue;
|
||
switch (e.type) {
|
||
case 'save': S.drawSave(ctx, e, t); break;
|
||
case 'goal': S.drawGoal(ctx, e, t); break;
|
||
case 'gun': if (!e.taken) S.drawGun(ctx, e, t); break;
|
||
case 'apple': if (!e.taken) S.drawApple(ctx, e, t); break;
|
||
case 'jumpref': S.drawJumpRef(ctx, e, t); break;
|
||
case 'warp': if (!e.hidden) S.drawWarp(ctx, e, t); break;
|
||
case 'sign': S.drawSign(ctx, e, t); break;
|
||
case 'turret': S.drawTurret(ctx, e, t); break;
|
||
case 'camzone': S.drawCamera(ctx, e, t); break;
|
||
case 'dropspike': S.drawDropSpike(ctx, e, t); break;
|
||
}
|
||
}
|
||
|
||
// 子弹
|
||
for (const b of this.bullets) S.drawBullet(ctx, b);
|
||
for (const b of this.ebullets) S.drawEBullet(ctx, b, t);
|
||
|
||
// 死亡血迹（IWBTG 风格，常驻于死亡地点）
|
||
for (const dm of this.deathMarks) this.drawDeathMark(ctx, dm);
|
||
|
||
this.particles.draw(ctx);
|
||
ctx.restore();
|
||
}
|
||
|
||
/** 屏幕空间 UI：提示牌文字 / toast */
|
||
drawOverlay(ctx, cam, t) {
|
||
for (const e of this.entities) {
|
||
if (e.type !== 'sign') continue;
|
||
const sx = (e.x + e.w / 2 - cam.x) * (cam.zoom || 1);
|
||
const sy = (e.y - 6 - cam.y) * (cam.zoom || 1);
|
||
if (sx < -80 || sx > cam.w + 80) continue;
|
||
ctx.font = 'bold 11px "Courier New",monospace';
|
||
ctx.textAlign = 'center';
|
||
const txt = e.text;
|
||
const wd = ctx.measureText(txt).width;
|
||
ctx.fillStyle = 'rgba(0,0,0,.72)';
|
||
ctx.fillRect(sx - wd / 2 - 5, sy - 13, wd + 10, 16);
|
||
ctx.fillStyle = '#ffe9a8';
|
||
ctx.fillText(txt, sx, sy);
|
||
}
|
||
}
|
||
}
|
||
|
||
// 单三角形刺的顶点（与 sprites.drawSpike 完全一致）。
|
||
// 尖端指向刺的方向，底边贴在相反一侧（地面 / 天花板 / 墙面）。
|
||
function spikeTri(t, x, y) {
|
||
const s = TILE;
|
||
if (t === T.SPIKE_U) return { ax: x + s / 2, ay: y, bx: x, by: y + s, cx: x + s, cy: y + s };
|
||
if (t === T.SPIKE_D) return { ax: x + s / 2, ay: y + s, bx: x, by: y, cx: x + s, cy: y };
|
||
if (t === T.SPIKE_L) return { ax: x, ay: y + s / 2, bx: x + s, by: y, cx: x + s, cy: y + s };
|
||
if (t === T.SPIKE_R) return { ax: x + s, ay: y + s / 2, bx: x, by: y, cx: x, cy: y + s };
|
||
return { ax: x, ay: y, bx: x + s, by: y, cx: x, cy: y + s }; // 兜底（不应到达）
|
||
}
|
||
|
||
// 三角形与轴对齐矩形的相交判定（分离轴定理，凸多边形充要条件）。
|
||
function triRectOverlap(ax, ay, bx, by, cx, cy, rx, ry, rw, rh) {
|
||
const rMinX = rx, rMaxX = rx + rw, rMinY = ry, rMaxY = ry + rh;
|
||
const tMinX = Math.min(ax, bx, cx), tMaxX = Math.max(ax, bx, cx);
|
||
const tMinY = Math.min(ay, by, cy), tMaxY = Math.max(ay, by, cy);
|
||
if (tMaxX < rMinX || tMinX > rMaxX || tMaxY < rMinY || tMinY > rMaxY) return false; // AABB 快速排除
|
||
const edges = [[bx - ax, by - ay], [cx - bx, cy - by], [ax - cx, ay - cy]];
|
||
for (const [ex, ey] of edges) {
|
||
const nx = -ey, ny = ex; // 边法线
|
||
const t0 = nx * ax + ny * ay, t1 = nx * bx + ny * by, t2 = nx * cx + ny * cy;
|
||
const tMin = Math.min(t0, t1, t2), tMax = Math.max(t0, t1, t2);
|
||
const p0 = nx * rMinX + ny * rMinY, p1 = nx * rMaxX + ny * rMinY,
|
||
p2 = nx * rMinX + ny * rMaxY, p3 = nx * rMaxX + ny * rMaxY;
|
||
const rMin = Math.min(p0, p1, p2, p3), rMax = Math.max(p0, p1, p2, p3);
|
||
if (tMax < rMin || rMax < tMin) return false; // 找到分离轴
|
||
}
|
||
return true;
|
||
}
|
||
export { spikeTri, triRectOverlap };
|