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// 回响星核 / Echo Nexus — 遗迹探险肉鸽系统 (Expedition)
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//
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// 玩家消耗能量进入程序化生成的遗迹节点路径，沿路触发事件，
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// 到达终点 boss 获取大奖。失败保留已获奖励但探险结束。
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import type {
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Expedition,
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ExpeditionNode,
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ExpeditionNodeType,
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ExpeditionResult,
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GameState,
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} from "./types";
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/** 简单可复现随机（mulberry32） */
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function makeRng(seed: number) {
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let a = seed >>> 0;
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return () => {
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a |= 0;
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a = (a + 0x6d2b79f5) | 0;
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let t = Math.imul(a ^ (a >>> 15), 1 | a);
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t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t;
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return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
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};
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}
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/** 探险配置 */
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export const EXPEDITION_CONFIG = {
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/** 进入探险消耗能量 */
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energyCost: 1,
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/** 路径节点数范围 */
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minNodes: 5,
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maxNodes: 7,
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/** boss 固定在最后一个节点 */
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/** 初始生命 */
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baseHp: 100,
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/** 探险力基础 */
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basePower: 10,
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/** 战斗：胜率 = clamp(power / (power + difficulty*8), 0.25, 0.95) */
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combatDifficultyScale: 8,
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/** 能量恢复间隔（秒），每 interval 恢复 1 点 */
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energyRegenSec: 45,
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};
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/** 节点类型权重（boss 固定末位，其余按权重随机） */
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const NODE_WEIGHTS: Record<ExpeditionNodeType, number> = {
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combat: 0.3,
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treasure: 0.25,
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choice: 0.2,
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puzzle: 0.1,
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rest: 0.15,
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boss: 0,
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};
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/** 节点事件文案池 */
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const NODE_FLAVOR: Record<
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ExpeditionNodeType,
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{ titles: string[]; descs: string[] }
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> = {
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combat: {
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titles: ["守卫残影", "虚空巡游者", "腐化无人机", "以太守门人"],
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descs: [
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"一道扭曲的残影拦住去路，它是被遗忘的守卫。",
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"虚空巡游者在走廊游荡，感知到了你的存在。",
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"腐化的自治无人机识别为入侵者，启动攻击协议。",
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"以太守门人挡在门前，唯有将其击溃方可通过。",
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],
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},
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treasure: {
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titles: ["遗失货舱", "晶体宝库", "遗物储藏室", "谐振宝箱"],
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descs: [
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"一扇半开的舱门后，散落着未及带走的晶体。",
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"宝库的能量护盾早已失效，宝藏唾手可得。",
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"储藏室里的容器还亮着微光，里面是珍贵的洞见核心。",
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"一只谐振宝箱静静等候，似乎在等故人归来。",
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],
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},
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choice: {
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titles: ["分岔甬道", "低语祭坛", "未知装置", "回响之井"],
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descs: [
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"甬道在此分岔，两条路都传来不同的低语。",
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"祭坛上浮动着两团光，你必须选择其一。",
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"未知装置闪烁着两个按钮，你不知道后果。",
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"回响之井倒映出两种可能的未来。",
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],
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},
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puzzle: {
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titles: ["封印之门", "谐振锁", "记忆机关", "维度栅栏"],
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descs: [
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"一道封印之门需要正确的谐振才能开启。",
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"谐振锁闪烁着复杂的图案，解之有大奖。",
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"记忆机关考验着你的解码技艺。",
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"维度栅栏以谜题为钥，智者得通行。",
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],
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},
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rest: {
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titles: ["休憩节点", "能量泉眼", "静默之厅", "回响营地"],
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descs: [
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"一处宁静的节点，可在此恢复生命。",
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"能量泉眼涌出暖流，抚慰你的探险队。",
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"静默之厅中，时间仿佛静止，伤痛缓缓消散。",
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"前人留下的营地，尚有补给可用。",
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],
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},
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boss: {
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titles: ["以太回响体", "维度守护者", "飞升残念", "终焉之核"],
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descs: [
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"路径尽头，以太回响体静静伫立——它是这个遗迹意志的化身。",
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"维度守护者挡在最后，唯有超越它方能触及终焉。",
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"飞升残念凝聚成形，它是以太族离去前留下的最后一道试炼。",
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"终焉之核悬浮于大厅中央，接触它即完成本次探险。",
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],
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},
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};
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/** 随机选一个节点类型（boss 除外） */
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function rollNodeType(rng: () => number): ExpeditionNodeType {
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const types = Object.keys(NODE_WEIGHTS) as ExpeditionNodeType[];
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const total = types.reduce((s, t) => s + NODE_WEIGHTS[t], 0);
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let r = rng() * total;
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for (const t of types) {
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r -= NODE_WEIGHTS[t];
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if (r <= 0) return t;
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}
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return "combat";
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}
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/** 生成一次探险 */
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export function generateExpedition(
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seed: number,
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power: number,
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hp: number
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): Expedition {
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const rng = makeRng(seed);
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const nodeCount =
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EXPEDITION_CONFIG.minNodes +
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Math.floor(rng() * (EXPEDITION_CONFIG.maxNodes - EXPEDITION_CONFIG.minNodes + 1));
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const nodes: ExpeditionNode[] = [];
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for (let i = 0; i < nodeCount; i++) {
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const isBoss = i === nodeCount - 1;
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const type: ExpeditionNodeType = isBoss ? "boss" : rollNodeType(rng);
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const flavor = NODE_FLAVOR[type];
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const fi = Math.floor(rng() * flavor.titles.length);
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nodes.push({
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id: i,
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type,
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title: flavor.titles[fi],
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desc: flavor.descs[fi],
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cleared: false,
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difficulty: isBoss ? 5 + Math.floor(rng() * 3) : 1 + Math.floor(rng() * 4),
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position: i,
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});
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}
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// 第一个节点固定为 treasure 或 rest（友好开局）
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if (nodes[0].type === "combat" || nodes[0].type === "boss") {
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nodes[0].type = rng() < 0.5 ? "treasure" : "rest";
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const f = NODE_FLAVOR[nodes[0].type];
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nodes[0].title = f.titles[0];
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nodes[0].desc = f.descs[0];
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nodes[0].difficulty = 1;
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}
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return {
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id: `exp_${seed}_${Date.now()}`,
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nodes,
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currentNode: 0,
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finished: false,
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rewards: { crystals: 0, insights: 0, contact: 0, fragments: [] },
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power,
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hp,
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maxHp: hp,
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seed,
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startedAt: Date.now(),
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};
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}
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/** 计算探险力（由技术树 + 飞升蓝图） */
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export function computeExpeditionPower(state: GameState): number {
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let power = EXPEDITION_CONFIG.basePower;
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// 探险分支技术加成
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const exp1 = state.tech?.exp_1 ?? 0;
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const exp2 = state.tech?.exp_2 ?? 0;
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const exp3 = state.tech?.exp_3 ?? 0;
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power += exp1 * 3 + exp2 * 5 + exp3 * 8;
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// 飞升蓝图加成
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power *= 1 + (state.blueprints?.length ?? 0) * 0.08;
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// 飞升周目加成
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power *= 1 + (state.ascensions ?? 0) * 0.15;
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return Math.round(power);
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}
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/** 计算探险最大生命 */
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export function computeExpeditionHp(state: GameState): number {
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let hp = EXPEDITION_CONFIG.baseHp;
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hp += (state.tech?.exp_2 ?? 0) * 20;
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hp += (state.ascensions ?? 0) * 10;
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return hp;
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}
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/** 战斗胜率 */
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export function combatWinRate(power: number, difficulty: number): number {
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const scale = EXPEDITION_CONFIG.combatDifficultyScale;
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return Math.max(0.25, Math.min(0.95, power / (power + difficulty * scale)));
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}
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/** 结算当前节点（自动结算，返回结果与日志） */
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export function resolveNode(
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expedition: Expedition,
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rng: () => number = Math.random
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): ExpeditionResult {
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const node = expedition.nodes[expedition.currentNode];
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if (!node) return { log: "无节点", ended: true, endReason: "abort" };
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if (node.cleared) {
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return advanceExpedition(expedition);
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}
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const power = expedition.power;
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const diff = node.difficulty;
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switch (node.type) {
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case "combat": {
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const winRate = combatWinRate(power, diff);
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const won = rng() < winRate;
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if (won) {
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const crystals = 8 + diff * 6 + Math.floor(rng() * 10);
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const insights = 1 + diff + Math.floor(rng() * 2);
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node.cleared = true;
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return {
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log: `击败「${node.title}」，缴获 ${crystals} 晶体、${insights} 洞见。`,
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crystals,
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insights,
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ended: false,
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};
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}
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const hpLoss = 20 + diff * 10 + Math.floor(rng() * 15);
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const newHp = expedition.hp - hpLoss;
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if (newHp <= 0) {
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node.cleared = true;
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return {
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log: `「${node.title}」过于强大，探险队全灭…（生命 -${expedition.hp}）`,
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hpDelta: -expedition.hp,
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ended: true,
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endReason: "defeat",
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};
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}
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// 战败但存活，仍可前进（节点算通过但无奖励）
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node.cleared = true;
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return {
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log: `「${node.title}」击退了探险队，损失 ${hpLoss} 生命，狼狈通过。`,
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hpDelta: -hpLoss,
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ended: false,
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};
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}
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case "treasure": {
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const crystals = 10 + diff * 8 + Math.floor(rng() * 15);
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const insights = 2 + diff + Math.floor(rng() * 3);
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node.cleared = true;
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return {
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log: `在「${node.title}」中发现 ${crystals} 晶体、${insights} 洞见。`,
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crystals,
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insights,
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ended: false,
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};
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}
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case "rest": {
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const heal = 15 + diff * 8 + Math.floor(rng() * 10);
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node.cleared = true;
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return {
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log: `在「${node.title}」休整，恢复 ${heal} 生命。`,
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hpDelta: heal,
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ended: false,
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};
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}
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case "puzzle": {
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// 简化：探险力越高越可能解出
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const solveRate = Math.min(0.9, 0.4 + power * 0.01);
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const solved = rng() < solveRate;
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if (solved) {
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const crystals = 20 + diff * 12;
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const insights = 5 + diff * 3;
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const contact = 1 + diff * 0.5;
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node.cleared = true;
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return {
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log: `解开「${node.title}」，获得 ${crystals} 晶体、${insights} 洞见、${contact.toFixed(1)} 接触进度。`,
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crystals,
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insights,
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contact,
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ended: false,
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};
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}
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node.cleared = true;
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return {
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log: `「${node.title}」未能解开，但探险队平安通过。`,
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ended: false,
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};
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}
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case "choice": {
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// 抉择节点：随机给一个好结果或一个坏结果
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const good = rng() < 0.55;
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if (good) {
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const crystals = 6 + diff * 5 + Math.floor(rng() * 8);
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node.cleared = true;
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return {
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log: `在「${node.title}」做出了明智的选择，获得 ${crystals} 晶体。`,
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crystals,
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ended: false,
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};
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}
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const hpLoss = 8 + diff * 5;
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node.cleared = true;
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return {
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log: `在「${node.title}」的选择带来了代价，损失 ${hpLoss} 生命。`,
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hpDelta: -hpLoss,
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ended: false,
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};
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}
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case "boss": {
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// boss：必定战斗，高难度
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const winRate = combatWinRate(power, diff);
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const won = rng() < winRate;
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node.cleared = true;
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if (won) {
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const crystals = 60 + diff * 25;
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const insights = 15 + diff * 6;
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const contact = 5 + diff * 1.5;
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// boss 必给一个碎片（如果还有未解锁的）
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return {
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log: `✦ 击败「${node.title}」！获得 ${crystals} 晶体、${insights} 洞见、${contact.toFixed(1)} 接触进度。`,
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crystals,
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insights,
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contact,
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ended: true,
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endReason: "victory",
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};
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}
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return {
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log: `「${node.title}」的力量超出想象，探险队全军覆没…`,
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hpDelta: -expedition.hp,
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ended: true,
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endReason: "defeat",
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};
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}
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}
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}
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/** 前进到下一节点 */
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export function advanceExpedition(expedition: Expedition): ExpeditionResult {
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if (expedition.currentNode >= expedition.nodes.length - 1) {
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return { log: "探险已完成", ended: true, endReason: "victory" };
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}
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expedition.currentNode++;
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return { log: `前进至节点 ${expedition.currentNode + 1}`, ended: false };
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}
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/** 计算能量恢复（基于时间） */
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export function computeEnergyRegen(
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lastTick: number,
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now: number,
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current: number,
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max: number
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): { energy: number; lastTick: number } {
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const interval = EXPEDITION_CONFIG.energyRegenSec * 1000;
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const elapsed = now - lastTick;
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const gained = Math.floor(elapsed / interval);
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if (gained <= 0) return { energy: current, lastTick };
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return {
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energy: Math.min(max, current + gained),
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lastTick: lastTick + gained * interval,
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};
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}
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