Android build v1.1.2

src/combat/combatStateTransitions.ts

@@ -0,0 +1,50 @@
+import type { PartyMember, Spell } from '../game'
+import { putSpellOnCooldown } from './spellCasting'
+import { advanceFreeCastProgress } from './spellEffects'
+
+export type CastStateFields<TParty extends readonly PartyMember[] = PartyMember[]> = {
+  party: TParty
+  resource: number
+  cooldowns: Record<string, number>
+  castsTowardFree: number
+  freeCastReady: boolean
+}
+
+export function applyCastStateUpdate<
+  TParty extends readonly PartyMember[],
+  TState extends CastStateFields<TParty>,
+>({
+  current,
+  party,
+  spell,
+  resourceCost,
+  cooldownMultiplier = 1,
+  cooldowns = current.cooldowns,
+  freeCast = { enabled: false, wasReady: false },
+}: {
+  current: TState
+  party: TParty
+  spell: Spell
+  resourceCost: number
+  cooldownMultiplier?: number
+  cooldowns?: Record<string, number>
+  freeCast?: {
+    enabled: boolean
+    wasReady: boolean
+  }
+}) {
+  const freeCastProgress = advanceFreeCastProgress({
+    enabled: freeCast.enabled,
+    wasReady: freeCast.wasReady,
+    castsTowardFree: current.castsTowardFree,
+  })
+
+  return {
+    ...current,
+    party,
+    resource: current.resource - resourceCost,
+    cooldowns: putSpellOnCooldown(cooldowns, spell, cooldownMultiplier),
+    castsTowardFree: freeCastProgress.castsTowardFree,
+    freeCastReady: freeCastProgress.freeCastReady,
+  }
+}