A proof of concept script to show how caps can be calculated in no-script games using sound events

TagPro_No_Script_Cap_Detector.user.js

// ==UserScript==
// @name           TagPro No Script Cap Detector
// @author         Poeticalto
// @include        http://tagpro-*.koalabeast.com*
// @description    A proof of concept script to show how caps can be calculated in no-script games using sound events
// @grant          GM_getValue
// @grant          GM_setValue
// @version        0.02
// ==/UserScript==

if (window.location.pathname.match(/^\/groups\/[a-z]{8}$/)) { //This part is used to get the player's team so it doesn't need to be checked in game.
    tagpro.ready(function(){
        var tpUserId = 'none';
        group = tagpro.group = Object.assign(tagpro.group, {//slight modification of Ko's GroPro group object tracker to keep track of teams
            self: undefined,
            players: {}
        });
        tagpro.group.socket.on('you', function(p){
            group.self = p;
        });
        var socket = group.socket;
        socket.on('member', function(member) {
            group.players[member.id] = Object.assign(group.players[member.id] || {}, member);
        });
    });
    window.onbeforeunload = function(){//updates vars before leaving page
        if (typeof group.self != "undefined" && typeof group.players != "undefined" && typeof group != "undefined"){ //idk what this is but I wrote it and it works
            GM_setValue("userTeam",group.players[group.self].team);
        }
        else if (typeof group.self == "undefined"){//If tpUserId isn't set, set Team to none (prevents cap updates)
            GM_setValue("userTeam","none");
        }
    };
}

(function(window) {
    'use strict';
    if(!window.tagpro) {//comp game is detected when the tagpro object does not exist
        var userTeam = GM_getValue("userTeam",3);//1 is red, 2 is blue, 3 is green
        console.log('Comp game detected, activating Cap Detector Script');
        var updateRedCaps = 0;
        var updateBlueCaps = 0;
        var firstSound = true; // used to detect the start of the game
        document.getElementById("cheering").addEventListener('play',function(){
            // The following three lines are test code that replaces sound effects
            document.getElementById("cheering").pause();
            document.getElementById("cheering").currentTime = 0;
            document.getElementById('alertlong').play();
            // This can be used for any standard tagpro sound, since they are all loaded into the document
            if (firstSound == true){ //the first cheering sound starts the game, so don't increment cap counter
                console.log('Start of comp game detected');
                firstSound = false;
                // Do userscript stuff for when the game starts
            }
            else if (userTeam == 1){ // adds cap to Red team
                updateRedCaps += 1;
                capUpdate();
            }
            else if (userTeam == 2){ // adds cap to Blue team
                updateBlueCaps += 1;
                capUpdate();
            }
        },false);
        document.getElementById("sigh").addEventListener('play',function(){
            if (userTeam == 1){
                updateBlueCaps += 1;
                capUpdate();
            }
            else if (userTeam == 2){
                updateRedCaps += 1;
                capUpdate();
            }
        },false);
        // Note: play event does not activate if game sounds are muted
        // However, play event does activate is volume is set to 0 (but no mute)
        function capUpdate(){ // this is a generic score update function, modify it however you want
            console.log('Cap detected, score is now '+updateRedCaps+'-'+updateBlueCaps);
        }
    }
})(unsafeWindow);