85 lines
2.3 KiB
TypeScript
85 lines
2.3 KiB
TypeScript
module TS.SpaceTac {
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/**
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* Function called to inform subscribers of new events.
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*/
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export type LogSubscriber = (event: BaseBattleEvent) => any;
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// Log of a battle
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// This keeps track of all events in a battle
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// It also allows to register a callback to receive these events
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export class BattleLog {
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// Full list of battle events
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events: BaseBattleEvent[]
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// List of subscribers
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private subscribers: LogSubscriber[]
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// List of event codes to ignore
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private filters: string[]
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// Indicator that the battle has ended
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private ended = false
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// Create an initially empty log
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constructor() {
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this.events = [];
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this.subscribers = [];
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this.filters = [];
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}
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postUnserialize(): void {
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this.subscribers = [];
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}
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// Clear the stored events
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clear(): void {
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this.ended = false;
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this.events = [];
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}
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// Add a battle event to the log
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add(event: BaseBattleEvent): void {
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// Apply filters
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var filtered = false;
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this.filters.forEach(code => {
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if (event.code === code) {
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filtered = true;
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}
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});
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if (filtered || this.ended) {
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return;
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}
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this.events.push(event);
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this.subscribers.forEach(subscriber => {
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subscriber(event);
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});
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if (event instanceof EndBattleEvent) {
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this.ended = true;
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}
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}
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// Filter out a type of event
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addFilter(event_code: string): void {
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this.filters.push(event_code);
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}
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// Subscribe a callback to receive further events
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subscribe(callback: LogSubscriber): LogSubscriber {
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this.subscribers.push(callback);
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return callback;
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}
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// Unsubscribe a callback
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// Pass the value returned by 'subscribe' as argument
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unsubscribe(callback: LogSubscriber): void {
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var index = this.subscribers.indexOf(callback);
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if (index >= 0) {
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this.subscribers.splice(index, 1);
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}
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}
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}
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}
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