Android build v1.1.2

src/combat/rules.ts

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+import type { PartyMember, Spell } from '../game'
+import type { Ability } from '../profile'
+import { createStackCounts, stackCount } from './stackCounts'
+
+export const DEFAULT_TICK_MS = 700
+
+export function clamp(value: number, min: number, max: number) {
+  return Math.min(max, Math.max(min, value))
+}
+
+export function chooseRandom<T>(items: T[], count: number) {
+  const pool = [...items]
+  const result: T[] = []
+  while (pool.length > 0 && result.length < count) {
+    const index = Math.floor(Math.random() * pool.length)
+    result.push(pool.splice(index, 1)[0])
+  }
+  return result
+}
+
+export function effectiveMaxHealth(member: PartyMember) {
+  return Math.max(
+    1,
+    Math.round(member.maxHealth * (member.maxHealthPenaltyTicks && member.maxHealthPenaltyTicks > 0 ? 0.75 : 1)),
+  )
+}
+
+export function healAmount(member: PartyMember, amount: number, multiplier = 1) {
+  return Math.round(amount * (member.healingReductionTicks && member.healingReductionTicks > 0 ? 0.75 : 1) * multiplier)
+}
+
+export function healMember(member: PartyMember, amount: number, multiplier = 1) {
+  return clamp(member.health + healAmount(member, amount, multiplier), 0, effectiveMaxHealth(member))
+}
+
+export function memberHotEffects(member: PartyMember) {
+  if (member.hotEffects?.length) return member.hotEffects
+  return member.hotTicks > 0
+    ? [{ id: 'legacy-renew', spellId: 'legacy-renew', label: 'Renew', ticks: member.hotTicks, power: 6 }]
+    : []
+}
+
+export function effectId(prefix: string) {
+  return `${prefix}-${globalThis.crypto?.randomUUID?.() ?? `${Date.now()}-${Math.random()}`}`
+}
+
+export function addHotEffect(member: PartyMember, spell: Spell, ticks = 5) {
+  const nextEffect = {
+    id: effectId(spell.id),
+    spellId: spell.id,
+    label: spell.name,
+    ticks,
+    power: Math.max(1, Math.round(spell.power / 2)),
+  }
+  const currentEffects = memberHotEffects(member).filter((effect) => effect.spellId !== spell.id)
+  return [...currentEffects, nextEffect]
+}
+
+export function addBounceHeal(member: PartyMember, spell: Spell) {
+  return [
+    ...(member.bounceHeals ?? []),
+    {
+      id: effectId(spell.id),
+      label: spell.name,
+      charges: 4,
+      power: spell.power,
+    },
+  ]
+}
+
+export function tickHotEffects(effects: PartyMember['hotEffects']) {
+  return (effects ?? [])
+    .map((effect) => ({ ...effect, ticks: effect.ticks - 1 }))
+    .filter((effect) => effect.ticks > 0)
+}
+
+export function formatEffectTime(ticks: number, tickMs = DEFAULT_TICK_MS) {
+  const seconds = (ticks * tickMs) / 1000
+  return Number.isInteger(seconds) ? `${seconds}s` : `${seconds.toFixed(1)}s`
+}
+
+export function buffStacks<T extends string>(items: readonly T[], id: T) {
+  return stackCount(createStackCounts(items), id)
+}
+
+export function createLogEntry(nextLogId: { current: number }, text: string, tone: 'system' | 'heal' | 'danger' | 'loot') {
+  return { id: nextLogId.current++, text, tone }
+}
+
+export function toCombatSpell(ability: Ability, key: string, healingPower = 0): Spell {
+  const kinds: Record<string, Spell['kind']> = {
+    direct_heal: 'direct',
+    direct_hot: 'direct',
+    heal_over_time: 'hot',
+    party_heal: 'group',
+    party_hot: 'group',
+    party_absorb: 'group',
+    absorb: 'shield',
+    damage_reduction: 'damage_reduction',
+    bounce_heal: 'bounce_heal',
+    cleanse: 'cleanse',
+  }
+  return {
+    id: String(ability.id),
+    key,
+    name: ability.name,
+    description: ability.description,
+    cost: ability.cost,
+    cooldown: ability.cooldown,
+    power: ability.power + healingPower,
+    glyph: ability.glyph,
+    kind: kinds[ability.spellType] ?? 'direct',
+    effectType: ability.spellType,
+  }
+}
+
+export function resetParty(partyTemplate: PartyMember[]) {
+  return partyTemplate.map((member) => ({
+    ...member,
+    health: member.maxHealth,
+    shield: 0,
+    hotTicks: 0,
+    hotEffects: undefined,
+    debuff: undefined,
+    debuffTicks: undefined,
+    poisonStacks: undefined,
+    maxHealthPenaltyTicks: undefined,
+    healingReductionTicks: undefined,
+    damageReductionTicks: undefined,
+    bounceHeals: undefined,
+  }))
+}