workadventure/back/src/Model/Zone.ts

95 lines
3.2 KiB
TypeScript

import {User} from "./User";
import {PositionInterface} from "_Model/PositionInterface";
import {Movable} from "./Movable";
import {Group} from "./Group";
import {ZoneSocket} from "../RoomManager";
import {EmoteEventMessage} from "../Messages/generated/messages_pb";
export type EntersCallback = (thing: Movable, fromZone: Zone|null, listener: ZoneSocket) => void;
export type MovesCallback = (thing: Movable, position: PositionInterface, listener: ZoneSocket) => void;
export type LeavesCallback = (thing: Movable, newZone: Zone|null, listener: ZoneSocket) => void;
export type EmoteCallback = (emoteEventMessage: EmoteEventMessage, listener: ZoneSocket) => void;
export class Zone {
private things: Set<Movable> = new Set<Movable>();
private listeners: Set<ZoneSocket> = new Set<ZoneSocket>();
constructor(private onEnters: EntersCallback, private onMoves: MovesCallback, private onLeaves: LeavesCallback, private onEmote: EmoteCallback, public readonly x: number, public readonly y: number) { }
/**
* A user/thing leaves the zone
*/
public leave(thing: Movable, newZone: Zone|null) {
const result = this.things.delete(thing);
if (!result) {
if (thing instanceof User) {
throw new Error('Could not find user in zone '+thing.id);
}
if (thing instanceof Group) {
throw new Error('Could not find group '+thing.getId()+' in zone ('+this.x+','+this.y+'). Position of group: ('+thing.getPosition().x+','+thing.getPosition().y+')');
}
}
this.notifyLeft(thing, newZone);
}
/**
* Notify listeners of this zone that this user/thing left
*/
private notifyLeft(thing: Movable, newZone: Zone|null) {
for (const listener of this.listeners) {
this.onLeaves(thing, newZone, listener);
}
}
public enter(thing: Movable, oldZone: Zone|null, position: PositionInterface) {
this.things.add(thing);
this.notifyEnter(thing, oldZone, position);
}
/**
* Notify listeners of this zone that this user entered
*/
private notifyEnter(thing: Movable, oldZone: Zone|null, position: PositionInterface) {
for (const listener of this.listeners) {
this.onEnters(thing, oldZone, listener);
}
}
public move(thing: Movable, position: PositionInterface) {
if (!this.things.has(thing)) {
this.things.add(thing);
this.notifyEnter(thing, null, position);
return;
}
for (const listener of this.listeners) {
//if (listener !== thing) {
this.onMoves(thing,position, listener);
//}
}
}
public getThings(): Set<Movable> {
return this.things;
}
public addListener(socket: ZoneSocket): void {
this.listeners.add(socket);
// TODO: here, we should trigger in some way the sending of current items
}
public removeListener(socket: ZoneSocket): void {
this.listeners.delete(socket);
}
public emitEmoteEvent(emoteEventMessage: EmoteEventMessage) {
for (const listener of this.listeners) {
this.onEmote(emoteEventMessage, listener);
}
}
}