UiSpellIcons

The UiSpellIcons class renders the spell/utility icon bar containing the "Heal Towers" spell and the "Timeout" utility item. It handles casting spells, buying the Pause item, animated cooldown overlays, and tooltip display with resource costs.

UiSpellIcons private

Extends UiComponent.

Properties

Name	Type	Description
ui	Ui	Current Ui instance. Inherited from UiComponent.
componentElem	HTMLElement	The root #hud-spell-icons DOM element. Inherited from UiComponent.
iconElems	Record<string, HTMLElement>	Map of spell/item type strings to their .hud-spell-icon elements.

Methods

constructor()

function constructor(ui: Ui): void

Initializes spell icon elements for HealTowersSpell and TimeoutItem, binds click handlers and UiTooltip instances (anchored right, showing resource costs), and registers listeners for wavePaused, inventoryUpdate, spellSchemaUpdate events and the CastSpellResponse RPC.

onIconClick()

function onIconClick(type: string): (event: MouseEvent) => void

Returns a click handler that calls useHealSpell() or useTimeoutItem() based on type. No-op if disabled or on cooldown.

useHealSpell()

function useHealSpell(): void

Cancels all active overlays and starts casting via SpellOverlay.startCasting('HealTowersSpell').

useTimeoutItem()

function useTimeoutItem(): void

Sends a BuyItem RPC for the Pause item.

onWavePaused()

function onWavePaused(): void

Starts the cooldown animation on the TimeoutItem icon using the Pause schema's purchaseCooldown.

onInventoryUpdate()

function onInventoryUpdate(): void

Toggles is-disabled on the TimeoutItem icon based on whether the Pause item is in inventory.

onSpellSchemaUpdate()

function onSpellSchemaUpdate(): void

Enables spell icons that have cooldownTiers defined in their schema.

onCastSpellResponse()

function onCastSpellResponse(response: { spell: string, cooldown: number, cooldownStartTick: number }): void

Handles the CastSpellResponse RPC. Calculates the start timestamp adjusted for tick lag and starts the cooldown animation.

startCooldownForIcon()

function startCooldownForIcon(type: string, duration: number, startTimestamp?: number | null): void

Animates a circular cooldown overlay using CSS linear-gradient rotation on the left/right cooldown half-elements. Uses requestAnimationFrame for smooth animation over the specified duration.