node-haxball/examples/plugins/CMD_afk.js

The most powerful and lightweight API that allows you to develop your original Haxball(www.haxball.com) host, client, and standalone applications both on node.js and browser environments and also includes every possible hack and functionality that you can

module.exports = function(API){
  const { OperationType, VariableType, ConnectionState, AllowFlags, Direction, CollisionFlags, CameraFollow, BackgroundType, GamePlayState, BanEntryType, Callback, Utils, Room, Replay, Query, Library, RoomConfig, Plugin, Renderer, Errors, Language, EventFactory, Impl } = API;

  Object.setPrototypeOf(this, Plugin.prototype);
  Plugin.call(this, "CMD_afk", true, { // "CMD_afk" is plugin's name, "true" means "activated just after initialization". Every plugin should have a unique name.
    version: "0.1",
    author: "abc",
    description: `This plugin lets us understand whether a player is afk or not.
    Available commands: 
    - !afk: Toggles your afk status.`,
    allowFlags: AllowFlags.CreateRoom // We allow this plugin to be activated on CreateRoom only.
  });

  this.defineVariable({
    name: "detectNonAFKByInput",
    description: "Whether to automatically mark players non-AFK whenever they press a key.",
    type: VariableType.Boolean,
    value: true
  });

  var afks, that = this;

  this.initialize = function(){
    afks = {};
    that.room.librariesMap.commands?.add({
      name: "afk",
      parameters: [],
      minParameterCount: 0,
      helpText: "Toggles your afk status.",
      callback: ({}, byId) => {
        var P = that.room.players.find((x)=>x.id==byId);
        var value = afks[byId];
        if (value){
          delete afks[byId];
          if (P)
            that.room.librariesMap.commands?.announceAction(P.name + " is now back to the game.");
        }
        else{
          afks[byId] = true;
          if (P)
            that.room.librariesMap.commands?.announceAction(P.name + " is now AFK.");
        }
      }
    });
  };

  this.finalize = function(){
    that.room.librariesMap.commands?.remove("afk");
    afks = null;
  };

  this.onOperationReceived = function(type, msg, globalFrameNo, clientFrameNo, customData){
    if (!that.detectNonAFKByInput || type!=OperationType.SendInput)
      return true;
    var byId = msg.byId;
    if (afks[byId]){
      delete afks[byId];
      var P = that.room.players.find((x)=>x.id==byId);
      if (P)
        that.room.librariesMap.commands?.announceAction(P.name + " is now back to the game.");
    }
    return true;
  };

  this.onPlayerLeave = function(playerObj, reason, isBanned, byId, customData){
    delete afks[playerObj.id];
  };
};