Lap Time Tracker for /r/tagproracing

lap-timer.user.js

// ==UserScript==
// @name          TagPro Lap Time Tracker
// @namespace     http://www.reddit.com/user/NewCompte
// @description   Track lap times
// @include       http://maptest.newcompte.fr:*
// @include       http://maptest2.newcompte.fr:*
// @license       WTFPL
// @author        NewCompte, snaps
// @version       0.9.1
// ==/UserScript==

function myScript()
{
    var playerNamesIds = false;

    var $lapSetter = $("<input />", {
        type: "number",
        val: 3,
        width: 64
    });
    $("#sound").append($lapSetter);

    var $button = $("<button />");
    $button.text("Track lap times");
    $button.click(initTimeTracker);
    $("#sound").append($button);

    function initTimeTracker () {
        var numberOfLaps = $lapSetter.val();

        tagpro.group.socket.emit("chat", "Userscript intialized. " + numberOfLaps + " laps.");

        tagpro.socket.on("p", function (data) {
            var time = data.t;
            data = data.u || data;
            for (var i = 0, l = data.length; i != l; i++) {
                var d = data[i];
                var id = d.id;
                if (d["s-captures"] && d["s-captures"] <= numberOfLaps) {
                    var lap = d["s-captures"];
                    if (!laps[lap]) {
                        previousLap++;
                        currentPosition = 0;
                        laps[lap] = [];
                    }
                    laps[lap].push({id: id, time: time});
                }

                if (d.name) {
                    playerNames[id] = d.name + (playerNamesIds ? " (" + id + ")" : "");
                }
                if (!playerNames[id]) {
                    playerNames[id] = ((tagpro.players[id] && tagpro.players[id].name) || "" ) + (playerNamesIds ? " (" + id + ")" : "");
                }
                if (d.mongoId) {
                    playerMongoIds[id] = d.mongoId;
                }
                if (!playerMongoIds[id]) {
                    playerMongoIds[id] = (tagpro.players[id] && tagpro.players[id].mongoId) || "";
                }
            }


        });

        var currentPosition = 0;
        var previousLap = 0;
        var laps = {};
        var lapNames = {};
        var playerNames = {};
        var playerMongoIds = {};
        var lapTime = 0;
        setInterval( function () {
            if (!(laps[previousLap] && laps[previousLap][currentPosition]))
                return;

            var message = "";
            var talkAbout = laps[previousLap][currentPosition];
            if (!currentPosition) {
                lapTime = talkAbout.time;
                var id = talkAbout.id,
                    playerName = playerNames[id];

                message = lapNames[previousLap] + " 1. " + playerName;
            }
            else {
                var id = talkAbout.id,
                    playerName = playerNames[id],
                    time = Math.round((talkAbout.time - lapTime) * 1000 / 60),
                    seconds = Math.floor(time/1000),
                    decisecond = Math.floor(time/100) % 10,
                    centisecond = Math.floor(time/10) % 10,
                    milisecond = time % 10;
                message = (currentPosition + 1) + ". " + playerName + " at +" + seconds + "." + decisecond + "" + centisecond;
                
            }
            // Add message for when the lap number moves off screen
            if (previousLap == numberOfLaps) {
                message += " (totally done!)";
            } else {
                message += " (that was lap " + previousLap + ")";
            }
            currentPosition++;
            tagpro.group.socket.emit("chat", message);
        }, 1000);

        function saveAsCSV () {
            function getTime(id, lap) {
                return (searchObject[lap + "," + id] || "").toString();
            }
            var searchObject = {};
            var idSearchObject = {};
            var idArray = [];
            for (var lap in laps) {
                laps[lap].forEach ( function (perf) {
                    searchObject[lap + "," + perf.id] = perf.time;
                    idSearchObject[perf.id] = true;
                });
            }
            for (var id in idSearchObject) {
                idArray.push(id);
            }
            var csv = "mongoId,name";
            for (var lap = 1; lap <= numberOfLaps; lap++) {
                csv += ',"Lap ' + lap + '"';
            }
            idArray.forEach( function (id) {
                csv += "\n" + playerMongoIds[id] + "," + playerNames[id];
                for (var lap = 1; lap <= numberOfLaps; lap++) {
                    csv += "," + getTime(id, lap);
                }
            });

            var file = new Blob([csv], {type: "data:text/csv;charset=utf-8"});

            var a = document.createElement('a');
            a.download = 'tagproracing-' + Date.now() + "-" + ($("div#mapInfo").text().slice(5).replace(" ", "").replace(" ", "").replace(" ", "").replace(" ", "").replace(" ", "").replace("-", "").replace("-", "").replace("-", "")) + '.csv';
            a.href = (window.URL || window.webkitURL).createObjectURL(file);

            var event = document.createEvent('MouseEvents');
            event.initEvent('click', true, false);

            // trigger download
            a.dispatchEvent(event);

            (window.URL || window.webkitURL).revokeObjectURL(a.href);
        }

        for (var lap = 1; lap < numberOfLaps; lap++) {
            lapNames[lap] = "Only " + (numberOfLaps - lap) + " lap(s) remaining.";
        }
        lapNames[numberOfLaps] = "Final Results !";

        var hasCSVBeenDownloadedYet = false;
        tagpro.socket.on('end', function() {
            if (! hasCSVBeenDownloadedYet) {
                hasCSVBeenDownloadedYet = true;
                saveAsCSV();
            }
        });
        window.addEventListener('beforeunload', function( event ) {
            if (! hasCSVBeenDownloadedYet) {
                hasCSVBeenDownloadedYet = true;
                saveAsCSV();
            }
        });
        $button
            .off()
            .text('Lap times are tracked.')
            .css('cursor', 'default');

    }

}
var source = "(" + myScript + ")()";
var thescript = document.createElement('script');
thescript.setAttribute("type", "application/javascript");
thescript.textContent = source;

document.body.appendChild(thescript);