b7854dfb90
In order to avoid triggering group creation when walking next to someone we should avoid creating a group unless the user stops next to the other members of the group.
298 lines
10 KiB
TypeScript
298 lines
10 KiB
TypeScript
import {PointInterface} from "./Websocket/PointInterface";
|
|
import {Group} from "./Group";
|
|
import {User} from "./User";
|
|
import {ExSocketInterface} from "_Model/Websocket/ExSocketInterface";
|
|
import {PositionInterface} from "_Model/PositionInterface";
|
|
import {Identificable} from "_Model/Websocket/Identificable";
|
|
import {EntersCallback, LeavesCallback, MovesCallback} from "_Model/Zone";
|
|
import {PositionNotifier} from "./PositionNotifier";
|
|
import {ViewportInterface} from "_Model/Websocket/ViewportMessage";
|
|
import {Movable} from "_Model/Movable";
|
|
import {extractDataFromPrivateRoomId, extractRoomSlugPublicRoomId, isRoomAnonymous} from "./RoomIdentifier";
|
|
import {arrayIntersect} from "../Services/ArrayHelper";
|
|
import {MAX_USERS_PER_ROOM} from "../Enum/EnvironmentVariable";
|
|
|
|
export type ConnectCallback = (user: User, group: Group) => void;
|
|
export type DisconnectCallback = (user: User, group: Group) => void;
|
|
|
|
export enum GameRoomPolicyTypes {
|
|
ANONYMUS_POLICY = 1,
|
|
MEMBERS_ONLY_POLICY,
|
|
USE_TAGS_POLICY,
|
|
}
|
|
|
|
export class GameRoom {
|
|
private readonly minDistance: number;
|
|
private readonly groupRadius: number;
|
|
|
|
// Users, sorted by ID
|
|
private readonly users: Map<number, User>;
|
|
private readonly groups: Set<Group>;
|
|
|
|
private readonly connectCallback: ConnectCallback;
|
|
private readonly disconnectCallback: DisconnectCallback;
|
|
|
|
private itemsState: Map<number, unknown> = new Map<number, unknown>();
|
|
|
|
private readonly positionNotifier: PositionNotifier;
|
|
public readonly roomId: string;
|
|
public readonly anonymous: boolean;
|
|
public tags: string[];
|
|
public policyType: GameRoomPolicyTypes;
|
|
public readonly roomSlug: string;
|
|
public readonly worldSlug: string = '';
|
|
public readonly organizationSlug: string = '';
|
|
|
|
constructor(roomId: string,
|
|
connectCallback: ConnectCallback,
|
|
disconnectCallback: DisconnectCallback,
|
|
minDistance: number,
|
|
groupRadius: number,
|
|
onEnters: EntersCallback,
|
|
onMoves: MovesCallback,
|
|
onLeaves: LeavesCallback)
|
|
{
|
|
this.roomId = roomId;
|
|
this.anonymous = isRoomAnonymous(roomId);
|
|
this.tags = [];
|
|
this.policyType = GameRoomPolicyTypes.ANONYMUS_POLICY;
|
|
|
|
if (this.anonymous) {
|
|
this.roomSlug = extractRoomSlugPublicRoomId(this.roomId);
|
|
} else {
|
|
const {organizationSlug, worldSlug, roomSlug} = extractDataFromPrivateRoomId(this.roomId);
|
|
this.roomSlug = roomSlug;
|
|
this.organizationSlug = organizationSlug;
|
|
this.worldSlug = worldSlug;
|
|
}
|
|
|
|
|
|
this.users = new Map<number, User>();
|
|
this.groups = new Set<Group>();
|
|
this.connectCallback = connectCallback;
|
|
this.disconnectCallback = disconnectCallback;
|
|
this.minDistance = minDistance;
|
|
this.groupRadius = groupRadius;
|
|
// A zone is 10 sprites wide.
|
|
this.positionNotifier = new PositionNotifier(320, 320, onEnters, onMoves, onLeaves);
|
|
}
|
|
|
|
public getGroups(): Group[] {
|
|
return Array.from(this.groups.values());
|
|
}
|
|
|
|
public getUsers(): Map<number, User> {
|
|
return this.users;
|
|
}
|
|
|
|
public join(socket : ExSocketInterface, userPosition: PointInterface): void {
|
|
const user = new User(socket.userId, socket.userUuid, userPosition, false, this.positionNotifier, socket);
|
|
this.users.set(socket.userId, user);
|
|
// Let's call update position to trigger the join / leave room
|
|
//this.updatePosition(socket, userPosition);
|
|
this.updateUserGroup(user);
|
|
}
|
|
|
|
public leave(user : Identificable){
|
|
const userObj = this.users.get(user.userId);
|
|
if (userObj === undefined) {
|
|
console.warn('User ', user.userId, 'does not belong to world! It should!');
|
|
}
|
|
if (userObj !== undefined && typeof userObj.group !== 'undefined') {
|
|
this.leaveGroup(userObj);
|
|
}
|
|
this.users.delete(user.userId);
|
|
|
|
if (userObj !== undefined) {
|
|
this.positionNotifier.removeViewport(userObj);
|
|
this.positionNotifier.leave(userObj);
|
|
}
|
|
}
|
|
|
|
get isFull(): boolean {
|
|
return this.users.size >= MAX_USERS_PER_ROOM;
|
|
}
|
|
|
|
public isEmpty(): boolean {
|
|
return this.users.size === 0;
|
|
}
|
|
|
|
public updatePosition(socket : Identificable, userPosition: PointInterface): void {
|
|
const user = this.users.get(socket.userId);
|
|
if(typeof user === 'undefined') {
|
|
return;
|
|
}
|
|
|
|
user.setPosition(userPosition);
|
|
|
|
this.updateUserGroup(user);
|
|
}
|
|
|
|
private updateUserGroup(user: User): void {
|
|
user.group?.updatePosition();
|
|
|
|
if (user.silent) {
|
|
return;
|
|
}
|
|
|
|
if (user.group === undefined) {
|
|
// If the user is not part of a group:
|
|
// should he join a group?
|
|
|
|
// If the user is moving, don't try to join
|
|
if (user.getPosition().moving) {
|
|
return;
|
|
}
|
|
|
|
const closestItem: User|Group|null = this.searchClosestAvailableUserOrGroup(user);
|
|
|
|
if (closestItem !== null) {
|
|
if (closestItem instanceof Group) {
|
|
// Let's join the group!
|
|
closestItem.join(user);
|
|
} else {
|
|
const closestUser : User = closestItem;
|
|
const group: Group = new Group([
|
|
user,
|
|
closestUser
|
|
], this.connectCallback, this.disconnectCallback, this.positionNotifier);
|
|
this.groups.add(group);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
// If the user is part of a group:
|
|
// should he leave the group?
|
|
const distance = GameRoom.computeDistanceBetweenPositions(user.getPosition(), user.group.getPosition());
|
|
if (distance > this.groupRadius) {
|
|
this.leaveGroup(user);
|
|
}
|
|
}
|
|
}
|
|
|
|
setSilent(socket: Identificable, silent: boolean) {
|
|
const user = this.users.get(socket.userId);
|
|
if(typeof user === 'undefined') {
|
|
console.warn('In setSilent, could not find user with ID "'+socket.userId+'" in world.');
|
|
return;
|
|
}
|
|
if (user.silent === silent) {
|
|
return;
|
|
}
|
|
|
|
user.silent = silent;
|
|
if (silent && user.group !== undefined) {
|
|
this.leaveGroup(user);
|
|
}
|
|
if (!silent) {
|
|
// If we are back to life, let's trigger a position update to see if we can join some group.
|
|
this.updatePosition(socket, user.getPosition());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Makes a user leave a group and closes and destroy the group if the group contains only one remaining person.
|
|
*
|
|
* @param user
|
|
*/
|
|
private leaveGroup(user: User): void {
|
|
const group = user.group;
|
|
if (group === undefined) {
|
|
throw new Error("The user is part of no group");
|
|
}
|
|
const oldPosition = group.getPosition();
|
|
group.leave(user);
|
|
if (group.isEmpty()) {
|
|
this.positionNotifier.leave(group);
|
|
group.destroy();
|
|
if (!this.groups.has(group)) {
|
|
throw new Error("Could not find group "+group.getId()+" referenced by user "+user.id+" in World.");
|
|
}
|
|
this.groups.delete(group);
|
|
} else {
|
|
group.updatePosition();
|
|
//this.positionNotifier.updatePosition(group, group.getPosition(), oldPosition);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Looks for the closest user that is:
|
|
* - close enough (distance <= minDistance)
|
|
* - not in a group
|
|
* - not silent
|
|
* OR
|
|
* - close enough to a group (distance <= groupRadius)
|
|
*/
|
|
private searchClosestAvailableUserOrGroup(user: User): User|Group|null
|
|
{
|
|
let minimumDistanceFound: number = Math.max(this.minDistance, this.groupRadius);
|
|
let matchingItem: User | Group | null = null;
|
|
this.users.forEach((currentUser, userId) => {
|
|
// Let's only check users that are not part of a group
|
|
if (typeof currentUser.group !== 'undefined') {
|
|
return;
|
|
}
|
|
if(currentUser === user) {
|
|
return;
|
|
}
|
|
if (currentUser.silent) {
|
|
return;
|
|
}
|
|
|
|
const distance = GameRoom.computeDistance(user, currentUser); // compute distance between peers.
|
|
|
|
if(distance <= minimumDistanceFound && distance <= this.minDistance) {
|
|
minimumDistanceFound = distance;
|
|
matchingItem = currentUser;
|
|
}
|
|
});
|
|
|
|
this.groups.forEach((group: Group) => {
|
|
if (group.isFull()) {
|
|
return;
|
|
}
|
|
const distance = GameRoom.computeDistanceBetweenPositions(user.getPosition(), group.getPosition());
|
|
if(distance <= minimumDistanceFound && distance <= this.groupRadius) {
|
|
minimumDistanceFound = distance;
|
|
matchingItem = group;
|
|
}
|
|
});
|
|
|
|
return matchingItem;
|
|
}
|
|
|
|
public static computeDistance(user1: User, user2: User): number
|
|
{
|
|
const user1Position = user1.getPosition();
|
|
const user2Position = user2.getPosition();
|
|
return Math.sqrt(Math.pow(user2Position.x - user1Position.x, 2) + Math.pow(user2Position.y - user1Position.y, 2));
|
|
}
|
|
|
|
public static computeDistanceBetweenPositions(position1: PositionInterface, position2: PositionInterface): number
|
|
{
|
|
return Math.sqrt(Math.pow(position2.x - position1.x, 2) + Math.pow(position2.y - position1.y, 2));
|
|
}
|
|
|
|
public setItemState(itemId: number, state: unknown) {
|
|
this.itemsState.set(itemId, state);
|
|
}
|
|
|
|
public getItemsState(): Map<number, unknown> {
|
|
return this.itemsState;
|
|
}
|
|
|
|
|
|
setViewport(socket : Identificable, viewport: ViewportInterface): Movable[] {
|
|
const user = this.users.get(socket.userId);
|
|
if(typeof user === 'undefined') {
|
|
console.warn('In setViewport, could not find user with ID "'+socket.userId+'" in world.');
|
|
return [];
|
|
}
|
|
return this.positionNotifier.setViewport(user, viewport);
|
|
}
|
|
|
|
canAccess(userTags: string[]): boolean {
|
|
return arrayIntersect(userTags, this.tags);
|
|
}
|
|
}
|