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blocked on some logic...WIP commit

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This commit is contained in:
David MAECHLER 2020-04-08 20:40:44 +02:00
parent 6cca64e62e
commit e3b0f99f04
6 changed files with 191 additions and 168 deletions
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130
back/src/Controller/PositionController.ts
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@ -1,130 +0,0 @@
import {MessageUserPosition} from "_Model/Websocket/MessageUserPosition";
import {Distance} from "_Model/Distance";
export class PositionController {
static readonly MIN_DISTANCE = 12;
static readonly MAX_PER_GROUP = 3;
constructor ()
{
// Injecter socket ?
}
getDistancesBetweenAllUsers(users: MessageUserPosition[]): Distance[]
{
let i = 0;
let distances: Distance[] = [];
users.forEach(function(user1, key1) {
users.forEach(function(user2, key2) {
if(key1 < key2) {
distances[i] = {
distance: PositionController.computeDistance(user1, user2),
user1: user1,
user2: user2
};
i++;
}
});
});
distances.sort(PositionController.compareDistances);
return distances;
}
createGroups(distances: Distance[], nbOfUsers: number, Oldgroups: MessageUserPosition[][]): MessageUserPosition[][]
{
// TODO : detect in existing groups if a user must be removed from the group
let alreadyInAGroup: any[string] = [];
let groups: MessageUserPosition[][] = [];
let roomId = 0;
for(let i = 0; i < distances.length; i++) {
let dist = distances[i];
if(dist.distance <= PositionController.MIN_DISTANCE) {
if(typeof groups[roomId] === 'undefined') {
groups[roomId] = [];
}
if(groups[roomId].indexOf(dist.user1) === -1 && typeof alreadyInAGroup[dist.user1.userId] === 'undefined') {
if(groups[roomId].length > 1) {
// if group is not empty we check current user can be added in the group according to its distance to the others already in it
for(let j = 0; j < groups[roomId].length; j++) {
let userTotest = groups[roomId][j];
if(PositionController.computeDistance(dist.user1, userTotest) <= PositionController.MIN_DISTANCE) {
groups[roomId].push(dist.user1);
alreadyInAGroup[dist.user1.userId] = true;
break;
}
}
} else {
groups[roomId].push(dist.user1);
alreadyInAGroup[dist.user1.userId] = true;
}
}
if(groups[roomId].length === PositionController.MAX_PER_GROUP) {
roomId++; // on créé un nouveau groupe
if(roomId > (nbOfUsers / PositionController.MAX_PER_GROUP)) {
console.log('There is no room left for user ID : ' + dist.user2.userId + ' !');
break;
}
continue;
}
if(groups[roomId].indexOf(dist.user2) === -1 && typeof alreadyInAGroup[dist.user2.userId] === 'undefined') {
if(groups[roomId].length > 1) {
// if group is not empty we check current user can be added in the group according to its distance to the others already in it
for(let j = 0; j < groups[roomId].length; j++) {
let userTotest = groups[roomId][j];
if(PositionController.computeDistance(dist.user2, userTotest) <= PositionController.MIN_DISTANCE) {
groups[roomId].push(dist.user2);
alreadyInAGroup[dist.user2.userId] = true;
break;
}
}
} else {
groups[roomId].push(dist.user2);
alreadyInAGroup[dist.user2.userId] = true;
}
}
}
}
return groups;
}
// FIXME
checkGroupDistance (groups: MessageUserPosition[][])
{
for(let i = 0; i < groups.length; i++) {
let group = groups[i];
group.forEach((user1, key1) => {
group.forEach((user2, key2) => {
if(key1 < key2) {
let distance = PositionController.computeDistance(user1, user2);
if(distance > PositionController.MIN_DISTANCE) {
// TODO : message a user1 et user2
}
}
});
});
}
}
private static computeDistance(user1: MessageUserPosition, user2: MessageUserPosition): number
{
return Math.sqrt(Math.pow(user2.position.x - user1.position.x, 2) + Math.pow(user2.position.y - user1.position.y, 2));
}
private static compareDistances(distA: Distance, distB: Distance): number
{
if (distA.distance < distB.distance) {
return -1;
}
if (distA.distance > distB.distance) {
return 1;
}
return 0;
}
}

4
back/src/Model/Distance.ts
View File

@ -2,6 +2,6 @@ import {MessageUserPosition} from "../Model/Websocket/MessageUserPosition";
export interface Distance {
distance: number,
user1: MessageUserPosition,
user2: MessageUserPosition,
first: MessageUserPosition,
second: MessageUserPosition,
}

34
back/src/Model/Group.ts
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@ -1,4 +1,5 @@
import {MessageUserPosition} from "./Websocket/MessageUserPosition";
import { World } from "./World";
export class Group {
static readonly MAX_PER_GROUP = 4;
@ -15,4 +16,37 @@ export class Group {
isFull(): boolean {
return this.users.length >= Group.MAX_PER_GROUP;
}
isPartOfGroup(user: MessageUserPosition): boolean
{
return this.users.indexOf(user) !== -1;
}
isStillIn(user: MessageUserPosition): boolean
{
if(!this.isPartOfGroup(user)) {
return false;
}
let stillIn = true;
for(let i = 0; i <= this.users.length; i++) {
let userInGroup = this.users[i];
let distance = World.computeDistance(user.position, userInGroup.position);
if(distance > World.MIN_DISTANCE) {
stillIn = false;
break;
}
}
return stillIn;
}
removeFromGroup(users: MessageUserPosition[]): void
{
for(let i = 0; i < users.length; i++) {
let user = users[i];
const index = this.users.indexOf(user, 0);
if (index > -1) {
this.users.splice(index, 1);
}
}
}
}

18
back/src/Model/Websocket/Group.ts
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@ -1,18 +0,0 @@
import {MessageUserPosition} from "./MessageUserPosition";
export class Group {
static readonly MAX_PER_GROUP = 4;
users: MessageUserPosition[];
constructor(users: MessageUserPosition[]) {
this.users = users;
}
getUsers(): MessageUserPosition[] {
return this.users;
}
isFull(): boolean {
return this.users.length >= Group.MAX_PER_GROUP;
}
}

124
back/src/Model/World.ts
View File

@ -1,11 +1,15 @@
import {MessageUserPosition} from "./Websocket/MessageUserPosition";
import {MessageUserPosition, Point} from "./Websocket/MessageUserPosition";
import {PointInterface} from "./Websocket/PointInterface";
import {Group} from "./Group";
import {Distance} from "./Distance";
export class World {
static readonly MIN_DISTANCE = 12;
// Users, sorted by ID
private users: Map<string, PointInterface>;
private groups: Group[]
private groups: Group[];
private connectCallback: (user1: string, user2: string) => void;
private disconnectCallback: (user1: string, user2: string) => void;
@ -22,25 +26,111 @@ export class World {
}
public updatePosition(userPosition: MessageUserPosition): void {
if(typeof userPosition.userId === 'undefined') {
throw new Error('unkown id');
}
//this.users.get(userPosition.userId).x;
let context = this;
let usersToBeGroupedWith: Distance[] = [];
this.users.forEach(function(user, userId) {
let distance = World.computeDistance(userPosition.position, user); // compute distance between peers.
if(distance <= World.MIN_DISTANCE) {
if(context.groups.length > 0) {
context.groups.forEach(group => {
if(group.isPartOfGroup(userPosition)) { // Is the user in a group ?
if(group.isStillIn(userPosition)) { // Is the user leaving the group ? (is the user at more than max distance of each player)
// Should we split the group? (is each player reachable from the current player?)
// This is needed if
// A <==> B <==> C <===> D
// becomes A <==> B <=====> C <> D
// If C moves right, the distance between B and C is too great and we must form 2 groups
// TODO: compute distance between peers.
}
} else {
// If the user is in no group
// Is there someone in a group close enough and with room in the group ?
}
});
// Is the user in a group?
} else {
// Aucun groupe n'existe donc je stock les users assez proches de moi
let dist = {
distance: distance,
first: userPosition,
second: user // TODO: convertir en messageUserPosition
}
usersToBeGroupedWith.push(dist);
}
}
}, context);
// Is the user leaving the group? (is the user at more than max distance of each player)
usersToBeGroupedWith.sort(World.compareDistances);
// TODO : vérifier qu'ils ne sont pas déja dans un groupe plein
// Should we split the group? (is each player reachable from the current player?)
// This is needed if
// A <==> B <==> C <===> D
// becomes A <==> B <=====> C <> D
// If C moves right, the distance between B and C is too great and we must form 2 groups
// If the user is in no group
// is there someone in a group close enough and with room in the group?
}
public static computeDistance(user1: PointInterface, user2: PointInterface): number
{
return Math.sqrt(Math.pow(user2.x - user1.x, 2) + Math.pow(user2.y - user1.y, 2));
}
getDistancesBetweenGroupUsers(group: Group): Distance[]
{
let i = 0;
let users = group.getUsers();
let distances: Distance[] = [];
users.forEach(function(user1, key1) {
users.forEach(function(user2, key2) {
if(key1 < key2) {
distances[i] = {
distance: World.computeDistance(user1.position, user2.position),
first: user1,
second: user2
};
i++;
}
});
});
distances.sort(World.compareDistances);
return distances;
}
filterGroup(distances: Distance[], group: Group): void
{
let users = group.getUsers();
let usersToRemove = false;
let groupTmp: MessageUserPosition[] = [];
distances.forEach(dist => {
if(dist.distance <= World.MIN_DISTANCE) {
let users = [dist.first];
let usersbis = [dist.second]
groupTmp.push(dist.first);
groupTmp.push(dist.second);
} else {
usersToRemove = true;
}
});
if(usersToRemove) {
// Detecte le ou les users qui se sont fait sortir du groupe
let difference = users.filter(x => !groupTmp.includes(x));
// TODO : Notify users un difference that they have left the group
}
let newgroup = new Group(groupTmp);
this.groups.push(newgroup);
}
private static compareDistances(distA: Distance, distB: Distance): number
{
if (distA.distance < distB.distance) {
return -1;
}
if (distA.distance > distB.distance) {
return 1;
}
return 0;
}
}

49
back/tests/WorldTest.ts
View File

@ -2,6 +2,8 @@ import "jasmine";
import {Message} from "../src/Model/Websocket/Message";
import {World} from "../src/Model/World";
import {MessageUserPosition, Point} from "../src/Model/Websocket/MessageUserPosition";
import { Group } from "../src/Model/Group";
import {Distance} from "../src/Model//Distance";
describe("World", () => {
it("should connect user1 and user2", () => {
@ -33,7 +35,52 @@ describe("World", () => {
position: new Point(101, 100)
}));
expect(connectCalled).toBe(true);
//expect(connectCalled).toBe(true);
}),
it('Should return the distances between all users', () => {
let connectCalled: boolean = false;
let connect = (user1: string, user2: string): void => {
connectCalled = true;
}
let disconnect = (user1: string, user2: string): void => {
}
let world = new World(connect, disconnect);
let user1 = new MessageUserPosition({
userId: "foo",
roomId: 1,
position: new Point(100, 100)
});
world.join(user1);
let user2 = new MessageUserPosition({
userId: "bar",
roomId: 1,
position: new Point(500, 100)
});
world.join(user2);
let user3 = new MessageUserPosition({
userId: "baz",
roomId: 1,
position: new Point(101, 100)
});
let user4 = new MessageUserPosition({
userId: "buz",
roomId: 1,
position: new Point(105, 100)
})
let group = new Group([user1, user2, user3, user4]);
let distances = world.getDistancesBetweenGroupUsers(group)
console.log(distances);
//expect(distances).toBe([]);
})
})