295 lines
16 KiB
JavaScript
295 lines
16 KiB
JavaScript
// server/sim/battle/status.js — Battle methods: buffs and statuses: addBuff (refresh rules) / removeBuff, the per-tick
|
|
// buff pass (onTick, expiry, natural regeneration), catalogue statuses (immunities, 抵抗, 寒冷 → 冻结, 浮空, 诱导, 恐惧) and
|
|
// "同名效果取最高".
|
|
// Installed on Battle.prototype by server/sim/Battle.js (a method container: never instantiated; `this` is the battle).
|
|
|
|
import { COLD_FREEZE_DURATION, LEVITATE_HALF_WEIGHT, RESIST_DEFAULT } from '../constants.js';
|
|
import { makeBuff, STATUS, RESIST_STATUSES } from '../buffs.js';
|
|
import { palsyBuff } from '../damage.js';
|
|
import { evadesGround } from '../targeting.js';
|
|
import { stampFear } from '../fear.js';
|
|
|
|
export class BattleStatus {
|
|
addBuff(unit, b) {
|
|
if (!unit || (!unit.alive && !b.allowDead)) return null;
|
|
const buff = makeBuff(b);
|
|
const list = unit.buffs;
|
|
let idx = -1;
|
|
for (let i = 0; i < list.length; i++) if (list[i].key === buff.key) { idx = i; break; }
|
|
if (idx >= 0 && buff.refresh !== 'independent') {
|
|
const old = list[idx];
|
|
switch (buff.refresh) {
|
|
case 'keep':
|
|
return old;
|
|
case 'stack':
|
|
old.stacks = Math.min(old.stacks + buff.stacks, Math.max(old.maxStacks, buff.maxStacks));
|
|
old.maxStacks = Math.max(old.maxStacks, buff.maxStacks);
|
|
old.timeLeft = buff.duration;
|
|
old.duration = buff.duration;
|
|
if (buff.mods) old.mods = buff.mods;
|
|
if (buff.flags) old.flags = buff.flags;
|
|
unit.markDirty();
|
|
return old;
|
|
case 'extend':
|
|
old.timeLeft = Math.max(old.timeLeft, buff.duration);
|
|
old.duration = Math.max(old.duration, buff.duration);
|
|
if (buff.mods) old.mods = buff.mods;
|
|
if (buff.flags) old.flags = buff.flags;
|
|
if (buff.shield > old.shield) old.shield = buff.shield;
|
|
if (buff.shieldHits > old.shieldHits) old.shieldHits = buff.shieldHits;
|
|
unit.markDirty();
|
|
return old;
|
|
default:
|
|
list[idx] = buff;
|
|
unit.markDirty();
|
|
return buff;
|
|
}
|
|
}
|
|
if (buff.refresh === 'independent') {
|
|
const same = list.filter((x) => x.key === buff.key);
|
|
if (same.length >= buff.maxStacks) {
|
|
const oldest = same.reduce((a, c) => (a.seq < c.seq ? a : c));
|
|
this._removeBuffAt(unit, list.indexOf(oldest), true);
|
|
}
|
|
}
|
|
list.push(buff);
|
|
unit.markDirty();
|
|
if (buff.visible || buff.status) {
|
|
const key = buff.status ?? buff.key;
|
|
if (list.filter((x) => (x.status ?? x.key) === key).length === 1) this._ev(['status', unit.id, key, 1]);
|
|
}
|
|
return buff;
|
|
}
|
|
|
|
removeBuff(unit, keyOrBuff) {
|
|
if (!unit) return 0;
|
|
let n = 0;
|
|
for (let i = unit.buffs.length - 1; i >= 0; i--) {
|
|
const b = unit.buffs[i];
|
|
if (b === keyOrBuff || b.key === keyOrBuff) { this._removeBuffAt(unit, i, true); n++; }
|
|
}
|
|
return n;
|
|
}
|
|
|
|
_removeBuffAt(unit, i, callRemove = true) {
|
|
const b = unit.buffs[i];
|
|
if (!b) return;
|
|
unit.buffs.splice(i, 1);
|
|
unit.markDirty();
|
|
if ((b.visible || b.status)) {
|
|
const key = b.status ?? b.key;
|
|
if (!unit.buffs.some((x) => (x.status ?? x.key) === key)) this._ev(['status', unit.id, key, 0]);
|
|
}
|
|
if (callRemove && b.onRemove) this._safe(() => b.onRemove({ battle: this, unit, buff: b }), 'buff.onRemove', unit);
|
|
}
|
|
|
|
_tickBuffs(dt) {
|
|
const units = this.units;
|
|
for (let i = 0, n = units.length; i < n; i++) { // units created by onTick handlers start ticking next tick
|
|
const u = units[i];
|
|
if (!u.alive || u.removed) continue;
|
|
if (u.buffs.length) {
|
|
const arr = u.buffs.slice();
|
|
for (const b of arr) {
|
|
if (!u.alive) break;
|
|
if (u.buffs.indexOf(b) < 0) continue;
|
|
if (b.onTick) {
|
|
if (b.interval > 0) {
|
|
b._acc += dt;
|
|
let n = 0;
|
|
while (b._acc >= b.interval - 1e-9 && n++ < 8) {
|
|
b._acc -= b.interval;
|
|
this._safe(() => b.onTick({ battle: this, unit: u, buff: b, dt: b.interval }), 'buff.onTick', u);
|
|
}
|
|
} else this._safe(() => b.onTick({ battle: this, unit: u, buff: b, dt }), 'buff.onTick', u);
|
|
}
|
|
if (b.timeLeft !== Infinity) {
|
|
b.timeLeft -= dt;
|
|
if (b.timeLeft <= 1e-9) {
|
|
const i = u.buffs.indexOf(b);
|
|
if (i >= 0) {
|
|
this._removeBuffAt(u, i, false);
|
|
if (b.onExpire) this._safe(() => b.onExpire({ battle: this, unit: u, buff: b }), 'buff.onExpire', u);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// natural HP regeneration
|
|
if (u.alive && u.deployed && !u.bossPool) {
|
|
const regen = u.s.hpRegen;
|
|
if (regen > 0 && u.hp < u.s.maxHp) {
|
|
u._regenAcc = (u._regenAcc ?? 0) + regen * dt;
|
|
if (u._regenAcc >= 1 || u.hp + u._regenAcc >= u.s.maxHp) {
|
|
this.heal(u, u, u._regenAcc, { self: true, silent: true, regen: true });
|
|
u._regenAcc = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Apply a catalogue status. opts: { duration, source, value, force, refresh, point, resistApplied } — returns true
|
|
* when applied. Honours enemy immunities (stun/silence/sleep/frozen/levitate/feared) unless `force`. `beforeStatus`
|
|
* handlers may cancel it or change `duration` / `value`. Official rules (buffs.js STATUS): 抵抗 (the `resist` status)
|
|
* shortens the RESIST_STATUSES by its value (default half; applied after `beforeStatus`; `resistApplied` skips that
|
|
* pass — the cold-on-cold 冻结 below already used post-抵抗 lengths). A second 寒冷 while 寒冷 remains applies 冻结 for
|
|
* max(remaining, this cold after 抵抗) (PRTS 术语释义 寒冷 「持续时间取双方之中最高」). 浮空 lasts half as long on units heavier
|
|
* than LEVITATE_HALF_WEIGHT (current massLevel); 冻结's RES cut hits enemies only; 麻痹 adds stacks; "同名效果取最高"
|
|
* statuses (`valued`) keep the strongest value — a weaker application only extends past the stronger one's end (it
|
|
* then resumes); other statuses refresh to the longer duration. 诱导 (`attract`) walks the enemy to `point`
|
|
* ([r, c] or {x, y}; default the source's tile — a new application moves the point); 恐惧 (`fear`) stamps where it
|
|
* was applied and from where (fear.js stampFear: the fan of 恐惧可达地块 its movement uses). A stunned/sleeping operator
|
|
* releases the enemies it blocks; a feared/levitated/unblockable/attracted enemy is released by its blocker.
|
|
* `statusApplied` reports the final duration and `entered` (the target did not carry the status before).
|
|
* A unit that is 无敌 and 无法选中 at once (a 重生 in progress, a hovering or 永久无敌 leader part) takes no status from
|
|
* the other side, `force` included — PRTS 无敌 "无法被不同阵营选中": so a status carried by the very hit that knocked an
|
|
* enemy out does not land after its 重生's cleanse (DESIGN §21.4). A ground enemy's status never lands on an airborne
|
|
* 起飞 ally (对地规避: targeting.js evadesGround) unless `opts.ignoreSelect`.
|
|
*/
|
|
applyStatus(target, key, opts = {}) {
|
|
if (!target || !target.alive) return false;
|
|
const src = opts.source;
|
|
if (src && src.side && src.side !== target.side && target.s.flags.invulnerable && target.s.flags.untargetable) return false;
|
|
if (!opts.ignoreSelect && target.s.flags.liftoff && evadesGround(src, target)) return false;
|
|
const tpl = STATUS[key] || { flags: { [key]: true } };
|
|
let duration = opts.duration == null ? Infinity : Number(opts.duration);
|
|
let value = opts.value;
|
|
if (!(duration > 0)) return false;
|
|
const immune = target.def && target.def.immune;
|
|
if (!opts.force && tpl.immune && immune && immune.has(tpl.immune)) return false;
|
|
// 浮空 Buff (PRTS 异常效果: "若单位数据上为飞行单位且不持有缚地异常或是持有浮空异常则Buff取消"; 行动方式 "行动类型（数据）为
|
|
// 飞行的单位、以及已持有浮空异常的单位无法被施加浮空Buff"): refused on data flyers (`motion` FLY) and units already
|
|
// levitated — a hovering 近地悬浮 enemy is WALK in its data, so it can be levitated (no 缚地 / 浮空强化 in this mode)
|
|
if (key === 'levitate' && (target.motion === 'FLY' || target.s.flags.levitate)) return false;
|
|
if (this._hooks.beforeStatus) {
|
|
const c = this.emit('beforeStatus', { source: opts.source ?? null, target, status: key, duration, value, cancel: false });
|
|
if (c.cancel || !target.alive) return false;
|
|
const d = Number(c.duration);
|
|
if (d === Infinity || (Number.isFinite(d) && d > 0)) duration = d;
|
|
else if (Number.isFinite(d) && d <= 0) return false;
|
|
value = c.value;
|
|
}
|
|
if (RESIST_STATUSES.has(key) && !opts.resistApplied) {
|
|
const rv = this.resistOf(target);
|
|
if (rv > 0) duration *= 1 - rv;
|
|
}
|
|
if (key === 'levitate' && target.s.massLevel > LEVITATE_HALF_WEIGHT) duration /= 2;
|
|
if (!(duration > 0)) return false;
|
|
if (key === 'cold' && target.findBuff('cold') && !(immune && immune.has('frozen'))) {
|
|
// PRTS 术语释义 寒冷: 友方寒冷 pairs into 冻结, 「持续时间取双方之中最高」. `duration` is this cold after 抵抗;
|
|
// the cold already on the target keeps timeLeft. addBuff refresh 'extend' below sets that cold to the same max.
|
|
// COLD_FREEZE_DURATION is only the fallback when neither side has a duration. resistApplied: that max is already
|
|
// post-抵抗, so the freeze must not be halved again.
|
|
// [ASSUMED] one catalogue cold, so an enemy-applied second cold uses this max too. PRTS states it on the 友方
|
|
// line only (敌方 cold becomes 冻结 when the target already has 敌方 cold or 敌方 冻结).
|
|
const prev = target.findBuff('cold');
|
|
const spans = [prev.timeLeft, duration].filter((t) => t === Infinity || (Number.isFinite(t) && t > 0));
|
|
const freezeFor = spans.length ? Math.max(...spans) : COLD_FREEZE_DURATION;
|
|
this.applyStatus(target, 'freeze', {
|
|
duration: freezeFor, source: opts.source, force: opts.force,
|
|
...(spans.length ? { resistApplied: true } : {}),
|
|
});
|
|
if (!target.alive) return false;
|
|
}
|
|
const source = opts.source ?? null;
|
|
let entered = true;
|
|
for (const b of target.buffs) if ((b.status ?? b.key) === key) { entered = false; break; }
|
|
if (tpl.palsy) {
|
|
this.addBuff(target, { ...palsyBuff(value ?? 1), duration, source });
|
|
} else if (tpl.valued != null && typeof tpl.mods === 'function' && opts.refresh == null) {
|
|
this._applyValuedStatus(target, key, tpl, duration, value ?? tpl.valued, source);
|
|
} else {
|
|
const mods = tpl.enemyOnlyMods && target.side !== 'enemy' ? null : typeof tpl.mods === 'function' ? tpl.mods(value) : (tpl.mods || null);
|
|
const b = this.addBuff(target, { key, duration, refresh: opts.refresh ?? 'extend', mods, flags: tpl.flags || null, status: key, visible: true, source });
|
|
if (tpl.attract && b) this._setAttractPoint(target, b, opts.point ?? value, source);
|
|
// 恐惧: the hit position and the source's position of every application (fear.js — the fan of reachable tiles)
|
|
if (key === 'fear' && b && target.side === 'enemy') stampFear(this, target, b, source);
|
|
}
|
|
const f = tpl.flags;
|
|
if (f && target.side === 'enemy' && (f.levitate || f.unblockable || f.fear)) this._unblock(target);
|
|
if (f && target.side === 'ally' && f.noBlock) this.releaseBlocked(target);
|
|
if (this._hooks.statusApplied) this.emit('statusApplied', { source, target, status: key, duration, value, entered });
|
|
return true;
|
|
}
|
|
|
|
/** 抵抗 of a unit: share of a resisted status's duration removed (0 = none; the `resist` status value, ≤ 0.95). */
|
|
resistOf(unit) {
|
|
if (!unit || !unit.buffs.length) return 0;
|
|
let r = 0;
|
|
for (const b of unit.buffs) {
|
|
if (b.status !== 'resist') continue;
|
|
const v = Number.isFinite(b.data?.value) ? b.data.value : RESIST_DEFAULT;
|
|
if (v > r) r = v;
|
|
}
|
|
return Math.min(0.95, r);
|
|
}
|
|
|
|
/** 诱导 target point of an `attract` status buff (enemy walks there; see ai.js moveAttracted). */
|
|
_setAttractPoint(target, buff, point, source) {
|
|
let r = null, c = null;
|
|
if (Array.isArray(point) && Number.isFinite(point[0]) && Number.isFinite(point[1])) { r = point[0]; c = point[1]; }
|
|
else if (point && typeof point === 'object' && Number.isFinite(point.x) && Number.isFinite(point.y)) { r = point.y; c = point.x; }
|
|
else if (source && Number.isFinite(source.x) && Number.isFinite(source.y)) { r = source.y; c = source.x; }
|
|
if (r == null) { if (!buff.data.attract) buff.data = { ...buff.data, attract: null }; return; }
|
|
const R = this.rect;
|
|
r = Math.max(R.r0, Math.min(R.r1, Math.round(r)));
|
|
c = Math.max(R.c0, Math.min(R.c1, Math.round(c)));
|
|
buff.data = { ...buff.data, attract: { r, c, pts: null, i: 0, ver: -1 } };
|
|
}
|
|
|
|
/**
|
|
* "同名效果取最高" for a content effect that is not a catalogue status (no immunities, 抵抗, `beforeStatus` /
|
|
* `statusApplied` hooks or status icon): ONE instance of `key` per target whatever the number of sources — the
|
|
* strongest `value` applies, a weaker application only extends past the stronger one's end (it then resumes), an
|
|
* equal one refreshes to the longer duration. `mods(value)` builds the buff's mods. The engine's default for two
|
|
* same-named buffs (PRTS 作战机制 "同名buff的默认叠加策略buff只能表现出一个"). Returns true when applied.
|
|
* @param {object} target
|
|
* @param {string} key
|
|
* @param {{ duration: number, value: number, mods: (v: number) => object, source?: object|null }} opts
|
|
*/
|
|
applyStrongest(target, key, { duration, value, mods, source = null } = {}) {
|
|
if (!target || !target.alive || !(Number(duration) > 0) || !Number.isFinite(value) || typeof mods !== 'function') return false;
|
|
this._applyValuedStatus(target, key, { mods, valued: value, plain: true }, Number(duration), value, source);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* "同名效果取最高": keep the strongest value; a weaker one that outlasts it resumes afterwards (buff.data.tail). A
|
|
* `plain` template (applyStrongest) is an ordinary invisible buff, not a status.
|
|
*/
|
|
_applyValuedStatus(target, key, tpl, duration, value, source) {
|
|
const strength = (v) => Math.abs(Number.isFinite(v) ? v : tpl.valued);
|
|
const make = (v, dur, tail) => ({
|
|
...(tpl.buff || null), // extra buff fields of the status (抵抗: the 麻痹 decay tick)
|
|
key, duration: dur, refresh: 'replace', mods: tpl.mods(v), flags: tpl.flags || null, status: tpl.plain ? null : key,
|
|
visible: !tpl.plain, source,
|
|
data: { value: v, tail },
|
|
onExpire: ({ battle, unit, buff }) => {
|
|
const t = buff.data.tail;
|
|
if (t && t.until - battle.time > 1e-6 && unit.alive) battle.addBuff(unit, make(t.value, t.until - battle.time, null));
|
|
},
|
|
});
|
|
const old = target.buffs.find((b) => b.key === key && (tpl.plain || b.status === key));
|
|
if (!old) { this.addBuff(target, make(value, duration, null)); return; }
|
|
const oldV = old.data && Number.isFinite(old.data.value) ? old.data.value : tpl.valued;
|
|
const oldEnd = this.time + old.timeLeft, newEnd = this.time + duration;
|
|
const oldTail = old.data && old.data.tail;
|
|
const longerTail = (a, b) => (!a ? b : !b ? a : (b.until > a.until ? b : a));
|
|
if (strength(value) > strength(oldV) + 1e-12) {
|
|
// stronger: takes over now; the weaker old one (or its tail) resumes if it lasts longer
|
|
const tail = longerTail(oldEnd > newEnd ? { value: oldV, until: oldEnd } : null, oldTail && oldTail.until > newEnd ? oldTail : null);
|
|
this.addBuff(target, make(value, duration, tail));
|
|
} else if (strength(value) < strength(oldV) - 1e-12) {
|
|
// weaker: never overrides; remembered as the tail when it outlasts the running one
|
|
if (newEnd > oldEnd && (!oldTail || newEnd > oldTail.until)) old.data = { ...old.data, value: oldV, tail: { value, until: newEnd } };
|
|
} else if (duration > old.timeLeft) {
|
|
old.timeLeft = duration;
|
|
old.duration = Math.max(old.duration, duration);
|
|
}
|
|
}
|
|
|
|
removeStatus(target, key) { return this.removeBuff(target, key); }
|
|
}
|