Kraut.World/server
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Adding the display of a circle around the group

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This PR adds the display of a circle around groups. This is useful to view where you need to go to speak to someone but also to debug.

Note: implementation is suboptimal, relying on a "graphics" object that is known to be slow. In the future, we need to use a circle as a sprite instead.
This commit is contained in:
David Négrier 2020-05-08 00:35:36 +02:00
parent 05fbcad252
commit 02e6b50b16
7 changed files with 153 additions and 12 deletions
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20
back/src/Model/World.ts
View file

@ -9,6 +9,10 @@ import {PositionInterface} from "_Model/PositionInterface";
export type ConnectCallback = (user: string, group: Group) => void;
export type DisconnectCallback = (user: string, group: Group) => void;
// callback called when a group is created or moved or changes users
export type GroupUpdatedCallback = (group: Group) => void;
export type GroupDeletedCallback = (uuid: string, lastUser: UserInterface) => void;
export class World {
private minDistance: number;
private groupRadius: number;
@ -19,11 +23,15 @@ export class World {
private connectCallback: ConnectCallback;
private disconnectCallback: DisconnectCallback;
private groupUpdatedCallback: GroupUpdatedCallback;
private groupDeletedCallback: GroupDeletedCallback;
constructor(connectCallback: ConnectCallback,
disconnectCallback: DisconnectCallback,
minDistance: number,
groupRadius: number)
groupRadius: number,
groupUpdatedCallback: GroupUpdatedCallback,
groupDeletedCallback: GroupDeletedCallback)
{
this.users = new Map<string, UserInterface>();
this.groups = [];
@ -31,6 +39,8 @@ export class World {
this.disconnectCallback = disconnectCallback;
this.minDistance = minDistance;
this.groupRadius = groupRadius;
this.groupUpdatedCallback = groupUpdatedCallback;
this.groupDeletedCallback = groupDeletedCallback;
}
public join(userPosition: MessageUserPosition): void {
@ -86,6 +96,11 @@ export class World {
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 (typeof user.group !== 'undefined') {
this.groupUpdatedCallback(user.group);
}
}
/**
@ -101,12 +116,15 @@ export class World {
group.leave(user);
if (group.isEmpty()) {
this.groupDeletedCallback(group.getId(), user);
group.destroy();
const index = this.groups.indexOf(group, 0);
if (index === -1) {
throw new Error("Could not find group");
}
this.groups.splice(index, 1);
} else {
this.groupUpdatedCallback(group);
}
}