Android build v1.1.5

src/combat/spellCasting.ts

@@ -1,21 +1,79 @@
 import type { Spell } from '../game'
 
+export function cooldownNow() {
+  return Date.now()
+}
+
+export function cooldownRemaining(
+  cooldowns: Record<string, number>,
+  spellId: string,
+  now = cooldownNow(),
+) {
+  return Math.max(0, ((cooldowns[spellId] ?? 0) - now) / 1000)
+}
+
+export function hasActiveCooldowns(
+  cooldowns: Record<string, number>,
+  now = cooldownNow(),
+) {
+  return Object.values(cooldowns).some((readyAtMs) => readyAtMs > now)
+}
+
+export function pruneExpiredCooldowns(
+  cooldowns: Record<string, number>,
+  now = cooldownNow(),
+) {
+  let changed = false
+  const nextCooldowns: Record<string, number> = {}
+  for (const id in cooldowns) {
+    if (cooldowns[id] <= now) {
+      changed = true
+      continue
+    }
+    nextCooldowns[id] = cooldowns[id]
+  }
+  return changed ? nextCooldowns : cooldowns
+}
+
+export function reduceCooldown(
+  cooldowns: Record<string, number>,
+  spellId: string,
+  seconds: number,
+  now = cooldownNow(),
+) {
+  const readyAtMs = cooldowns[spellId]
+  if (!readyAtMs || readyAtMs <= now) return cooldowns
+  const nextReadyAtMs = readyAtMs - seconds * 1000
+  const nextCooldowns = { ...cooldowns }
+  if (nextReadyAtMs <= now) delete nextCooldowns[spellId]
+  else nextCooldowns[spellId] = nextReadyAtMs
+  return nextCooldowns
+}
+
 export function canCastSpell(
   spell: Spell,
   resource: number,
   cooldowns: Record<string, number>,
   resourceCost: number,
+  now = cooldownNow(),
 ) {
-  return resource >= resourceCost && (cooldowns[spell.id] ?? 0) <= 0
+  return resource >= resourceCost && cooldownRemaining(cooldowns, spell.id, now) <= 0
 }
 
 export function putSpellOnCooldown(
   cooldowns: Record<string, number>,
   spell: Spell,
   cooldownMultiplier = 1,
+  now = cooldownNow(),
 ) {
+  const cooldownMs = spell.cooldown * cooldownMultiplier * 1000
+  if (cooldownMs <= 0) {
+    const nextCooldowns = { ...cooldowns }
+    delete nextCooldowns[spell.id]
+    return nextCooldowns
+  }
   return {
     ...cooldowns,
-    [spell.id]: spell.cooldown * cooldownMultiplier,
+    [spell.id]: now + cooldownMs,
   }
 }