86 lines
2.7 KiB
TypeScript
86 lines
2.7 KiB
TypeScript
import {UserInterface} from "./UserInterface";
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import {PointInterface} from "_Model/Websocket/PointInterface";
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import {PositionInterface} from "_Model/PositionInterface";
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export type UserEntersCallback = (user: UserInterface) => void;
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export type UserMovesCallback = (user: UserInterface, position: PointInterface) => void;
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export type UserLeavesCallback = (user: UserInterface) => void;
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export class Zone {
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private players: Set<UserInterface> = new Set<UserInterface>();
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private listeners: Set<UserInterface> = new Set<UserInterface>();
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constructor(private onUserEnters: UserEntersCallback, private onUserMoves: UserMovesCallback, private onUserLeaves: UserLeavesCallback) {
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}
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/**
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* A user leaves the zone
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*/
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public leave(user: UserInterface, newZone: Zone|null) {
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this.players.delete(user);
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this.notifyUserLeft(user, newZone);
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}
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/**
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* Notify listeners of this zone that this user left
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*/
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private notifyUserLeft(user: UserInterface, newZone: Zone|null) {
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for (const listener of this.listeners) {
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if (listener !== user && (newZone === null || !listener.listenedZones.has(newZone))) {
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this.onUserLeaves(user);
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}
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}
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}
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public enter(user: UserInterface, oldZone: Zone|null, position: PointInterface) {
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this.players.add(user);
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this.notifyUserEnter(user, oldZone, position);
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}
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/**
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* Notify listeners of this zone that this user entered
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*/
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private notifyUserEnter(user: UserInterface, oldZone: Zone|null, position: PointInterface) {
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for (const listener of this.listeners) {
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if (listener === user) {
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continue;
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}
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if (oldZone === null || !listener.listenedZones.has(oldZone)) {
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this.onUserEnters(user);
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} else {
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this.onUserMoves(user, position);
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}
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}
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}
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public move(user: UserInterface, position: PointInterface) {
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for (const listener of this.listeners) {
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if (listener !== user) {
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this.onUserMoves(user,position);
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}
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}
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}
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public startListening(user: UserInterface): void {
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for (const player of this.players) {
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if (player !== user) {
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this.onUserEnters(user);
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}
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}
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this.listeners.add(user);
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user.listenedZones.add(this);
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}
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public stopListening(user: UserInterface): void {
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for (const player of this.players) {
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if (player !== user) {
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this.onUserLeaves(user);
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}
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}
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this.listeners.delete(user);
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user.listenedZones.delete(this);
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}
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}
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