45 lines
1.2 KiB
TypeScript
45 lines
1.2 KiB
TypeScript
module SpaceTac.Game {
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"use strict";
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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: BaseLogEvent[];
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// List of subscribers
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private subscribers: Function[];
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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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}
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// Add a battle event to the log
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add(event: BaseLogEvent) {
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this.events.push(event);
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this.subscribers.forEach((subscriber: Function) => {
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subscriber(event);
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});
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}
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// Subscribe a callback to receive further events
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subscribe(callback: (event: BaseLogEvent) => void): Function {
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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: Function): 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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