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Multiplayer Game Client for the Browser.

Usage

Connecting to server:

import * as Colyseus from "colyseus.js";

var client = new Colyseus.Client('ws://localhost:2657');

Joining to a room:

var room = client.join("room_name");
room.onJoin.add(function() {
    console.log(client.id, "joined", room.name);
});

Listening to room state change:

Here comes the most powerful feature of the client. You can listen to every state update in the server-side, and bind them into client-side functions.

The first parameter is the path of the variable you want to listen to. When you provide placeholders (such as :number, :id, :string) to the path, they will populate the function with the value found on it. See examples below.

Listening to entities being added/removed from the room:

room.listen("entities/:id", (change) => {
    console.log(`new entity ${change.path.id}`, change.value);
});

Listening to entity attributes being added/replaced/removed:

room.listen("entities/:id/:attribute", (change) => {
    console.log(`entity ${change.path.id} changed attribute ${change.path.attribute} to ${change.value}`);
});

Other room events

Room state has been updated:

room.onUpdate.add(function(state) {
  console.log(room.name, "has new state:", state)
})

Data coming from server directly to this client:

room.onData.add(function(data) {
  console.log(client.id, "received on", room.name, data)
});

Server error occurred:

room.onError.add(function() {
  console.log(client.id, "couldn't join", room.name)
});

The client left the room:

room.onLeave.add(function() {
  console.log(client.id, "left", room.name)
});

Useful links

React Native compatibility

This client works with React Native. You need to install an aditional dependency for compatibility.

npm install react-native-browser-polyfill
// App.js
require('react-native-browser-polyfill');

The only caveat inside React Native environment is that you can only join rooms after the first connection open.

var client = new Colyseus.Client('ws://localhost:2657');

client.onOpen.add(() => {
    let room = client.join("your_room");
})

License

MIT