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Migrating position notification into the User class

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This commit is contained in:
David Négrier 2020-09-25 15:25:06 +02:00
parent 892d1555b8
commit 23cea1c835
7 changed files with 59 additions and 52 deletions
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8
back/src/Model/Group.ts
View file

@ -57,8 +57,9 @@ export class Group implements Movable {
let y = 0;
// Let's compute the barycenter of all users.
this.users.forEach((user: User) => {
x += user.position.x;
y += user.position.y;
const position = user.getPosition();
x += position.x;
y += position.y;
});
x /= this.users.size;
y /= this.users.size;
@ -69,8 +70,7 @@ export class Group implements Movable {
this.y = y;
if (oldX === undefined) {
// TODO: do we need a "create"
this.positionNotifier.updatePosition(this, {x, y}, {x, y});
this.positionNotifier.enter(this);
} else {
this.positionNotifier.updatePosition(this, {x, y}, {x: oldX, y: oldY});
}

7
back/src/Model/PositionNotifier.ts
View file

@ -74,6 +74,13 @@ export class PositionNotifier {
return things;
}
public enter(thing: Movable): void {
const position = thing.getPosition();
const zoneDesc = this.getZoneDescriptorFromCoordinates(position.x, position.y);
const zone = this.getZone(zoneDesc.i, zoneDesc.j);
zone.enter(thing, null, position);
}
public updatePosition(thing: Movable, newPosition: PositionInterface, oldPosition: PositionInterface): void {
// Did we change zone?
const oldZoneDesc = this.getZoneDescriptorFromCoordinates(oldPosition.x, oldPosition.y);

15
back/src/Model/User.ts
View file

@ -3,6 +3,7 @@ import { PointInterface } from "./Websocket/PointInterface";
import {Zone} from "_Model/Zone";
import {Movable} from "_Model/Movable";
import {PositionInterface} from "_Model/PositionInterface";
import {PositionNotifier} from "_Model/PositionNotifier";
export class User implements Movable {
public listenedZones: Set<Zone>;
@ -10,14 +11,22 @@ export class User implements Movable {
public constructor(
public id: number,
public position: PointInterface,
private position: PointInterface,
public silent: boolean,
private positionNotifier: PositionNotifier
) {
this.listenedZones = new Set<Zone>();
this.positionNotifier.enter(this);
}
public getPosition(): PositionInterface {
public getPosition(): PointInterface {
return this.position;
}
public setPosition(position: PointInterface): void {
const oldPosition = this.position;
this.position = position;
this.positionNotifier.updatePosition(this, position, oldPosition);
}
}

32
back/src/Model/World.ts
View file

@ -56,9 +56,11 @@ export class World {
}
public join(socket : Identificable, userPosition: PointInterface): void {
this.users.set(socket.userId, new User(socket.userId, userPosition, false));
const user = new User(socket.userId, userPosition, false, this.positionNotifier);
this.users.set(socket.userId, user);
// Let's call update position to trigger the join / leave room
this.updatePosition(socket, userPosition);
//this.updatePosition(socket, userPosition);
this.updateUserGroup(user);
}
public leave(user : Identificable){
@ -87,16 +89,13 @@ export class World {
return;
}
this.positionNotifier.updatePosition(user, userPosition, user.position);
user.setPosition(userPosition);
const oldGroupPosition = user.group?.getPosition();
this.updateUserGroup(user);
}
user.position = userPosition;
private updateUserGroup(user: User): void {
user.group?.updatePosition();
/*if (user.group !== undefined) {
// TODO: positionNotifier should be notified by the group itself when it moves!!!
this.positionNotifier.updatePosition(user.group, user.group.getPosition(), oldGroupPosition ? oldGroupPosition : user.group.getPosition());
}*/
if (user.silent) {
return;
@ -124,16 +123,11 @@ export class World {
} else {
// If the user is part of a group:
// should he leave the group?
const distance = World.computeDistanceBetweenPositions(user.position, user.group.getPosition());
const distance = World.computeDistanceBetweenPositions(user.getPosition(), user.group.getPosition());
if (distance > this.groupRadius) {
this.leaveGroup(user);
}
}
// At the very end, if the user is part of a group, let's call the callback to update group position
/*if (user.group !== undefined) {
this.positionNotifier.updatePosition(user.group, user.group.getPosition(), oldGroupPosition ? oldGroupPosition : user.group.getPosition());
}*/
}
setSilent(socket: Identificable, silent: boolean) {
@ -152,7 +146,7 @@ export class World {
}
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.position);
this.updatePosition(socket, user.getPosition());
}
}
@ -251,7 +245,7 @@ export class World {
if (group.isFull()) {
return;
}
const distance = World.computeDistanceBetweenPositions(user.position, group.getPosition());
const distance = World.computeDistanceBetweenPositions(user.getPosition(), group.getPosition());
if(distance <= minimumDistanceFound && distance <= this.groupRadius) {
minimumDistanceFound = distance;
matchingItem = group;
@ -263,7 +257,9 @@ export class World {
public static computeDistance(user1: User, user2: User): number
{
return Math.sqrt(Math.pow(user2.position.x - user1.position.x, 2) + Math.pow(user2.position.y - user1.position.y, 2));
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

4
back/src/Model/Zone.ts
View file

@ -25,10 +25,10 @@ export class Zone {
const result = this.things.delete(thing);
if (!result) {
if (thing instanceof User) {
console.error('Could not find user in zone '+thing.id);
throw new Error('Could not find user in zone '+thing.id);
}
if (thing instanceof Group) {
console.error('Could not find group '+thing.getId()+' in zone ('+this.x+','+this.y+'). Position of group: ('+thing.getPosition().x+','+thing.getPosition().y+')');
throw new Error('Could not find group '+thing.getId()+' in zone ('+this.x+','+this.y+'). Position of group: ('+thing.getPosition().x+','+thing.getPosition().y+')');
}
}