Jstris Keyboard Display Script

shows keyboard inputs on screen

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Jstris Keyboard Display Script
// @namespace    http://tampermonkey.net/
// @version      0.0.0
// @description  shows keyboard inputs on screen
// @author       mat1jaczyyy (based on Oki and meppydc's works)
// @match        https://*.jstris.jezevec10.com/*
// @grant        none
// @license      MIT
// ==/UserScript==

/* eslint-disable no-undef */

(function() {
    window.addEventListener('load', function() {
        const isGame = typeof Game != "undefined";
        const isReplayer = typeof Replayer != "undefined";

        if (!isGame && !isReplayer) return;

        const pos = {x: -300, y: 100};

        const keyConfig = [
            [
                'new',
                null,
                {k: 'reset', l: 'F4'},
            ],
            [
                null
            ],
            [
                '180',
                'ccw',
                'cw',
                null,
                null,
                'hd',
            ],
            [
                null,
                null,
                {k: 'hold', l: 'HLD'},
                null,
                {k: 'left', l: 'L'},
                'sd',
                {k: 'right', l: 'R'}
            ]
        ];

        var kbhold = document.createElement("div");
        kbhold.id = "keyboardHolder";
        kbhold.style.position = "absolute"
        kbhold.style.left = (myCanvas.getBoundingClientRect().left + pos.x) + "px";
        kbhold.style.top = (myCanvas.getBoundingClientRect().top + pos.y) + "px";
        document.body.appendChild(kbhold);

        let keyTable = `
            <style>
                #kbo {text-align:center;position: absolute;font-size:15px;}
                #kbo .tg {border-collapse:collapse;border-spacing:0;color:red;}
                #kbo .tg td{padding:10px 5px;border-style:solid;border-width:2px;}
                #kbo .tg th{padding:10px 5px;border-style:solid;border-width:2px;}
                #kbo .tg .kbnone{border-color:#000000;border:inherit;}
                #kbo .tg .kbkey{border-color:#34ff34;background-color:black;}
            </style>

            <div id="kbo">
                <div id="kps"></div>
                <table class="tg">
        `;

        for (const row of keyConfig) {
            keyTable += `<tr>`;

            for (const key of row) {
                let isKey = key != null;
                let label = "";
                let cssClass = "kbnone";

                if (isKey) {
                    label = typeof key == 'string'? key.toUpperCase() : key.l;
                    cssClass = "kbkey kbd-" + (typeof key == 'string'? key.toLowerCase() : key.k);
                }

                keyTable += `<td class="${cssClass}">${label}</td>`;
            }

            keyTable += `</tr>`;
        }

        keyTable += `
                </table>
            </div>
        `;

        keyboardHolder.innerHTML = keyTable;

        let inject = function(o, f, c) {
            let text = o.prototype[f].toString();

            let params = text.slice(text.indexOf("(") + 1, text.indexOf(")"))
                .trim().split(",")
                .map(i => i.trim())
                .filter(i => i);

            let body = text.slice(text.indexOf("{") + 1, -1);

            o.prototype[f] = new Function(...params, c(params, body));
        };

        let setKey = function(key, type) {
            for (const td of document.getElementsByClassName(`kbd-${key}`)) {
                td.style.backgroundColor = ["", "lightgoldenrodyellow"][type];
            }
        }

        if (isGame) {
            inject(Game, 'readyGo', (p, i) => "Game['set2ings'] = this.Settings.controls;" + i);
            inject(Game, 'updateTextBar', (p, i) => i + "; kps.innerHTML = 'KPS: ' + (this.getKPP() * this.placedBlocks / this.clock).toFixed(2);");

            let press = function (e) {
                if (typeof Game.set2ings == 'undefined') return;

                let i = Game.set2ings.indexOf(e.keyCode);
                if (i == -1) return;

                let key = ['left', 'right', 'sd', 'hd', 'ccw', 'cw', 'hold', '180', 'reset', 'new'][i];
                setKey(key, +(e.type == "keydown"))
            }

            document.addEventListener('keydown', press);
            document.addEventListener('keyup', press);

        } else if (isReplayer) {
            var url = window.location.href.split("/")

            if (!url[2].endsWith("jstris.jezevec10.com")) return;
            if (url[3] != "replay") return;

            fetch(`https://${url[2]}/replay/data?id=${url.length == 6? (url[5] + "&live=1") : url[4]}&type=0`)
                .then(res => res.json())
                .then(json => {
                    let das = json.c.das;

                    Replayer.setKey = setKey;

                    inject(Replayer, 'playUntilTime', (p, i) => {
                        let before = `;
                            kps.innerHTML = 'KPS: ' + (this.getKPP() * this.placedBlocks / this.clock * 1000).toFixed(2);

                            if (this.ptr == 0) Replayer.lastPtr = -1;

                            this.kbdActions = [];

                            for (let i = 0; i < this.actions.length; i++) {
                                let o = {a: this.actions[i].a, t: this.actions[i].t};

                                if (o.a == 2 || o.a == 3) {
			                        o.a -= 2;
                                    for (let j = i - 1; j >= 0; j--) {
                                        if (this.kbdActions[j].a < 2) {
                                            this.kbdActions[j].a += 2;
                                            break;
                                        }
                                    }
			                    }

                                this.kbdActions.push(o);
                            }

                            let pressKey = function(key, type) {
                                Replayer.setKey(key, Math.min(type, 1));

                                if (type == 2) {
                                    setTimeout(x => Replayer.setKey(key, 0), ${das} * 3 / 5)
                                }
                            };
                        `;

                        let after = `;
                            if (this.ptr != Replayer.lastPtr && this.ptr - 1 < this.kbdActions.length) {
                                var highlight = [
                                    ["left", 2],
                                    ["right", 2],
                                    ["left", 1],
                                    ["right", 1],
                                    ["ccw", 2],
                                    ["cw", 2],
                                    ["180", 2],
                                    ["hd", 2],
                                    ["sd", 2],
                                    null,
                                    ["hold", 2]
                                ][this.kbdActions[this.ptr - 1].a];

			                    if (highlight) {
			                        pressKey(...highlight)
			                    }
                            }

                            Replayer.lastPtr = this.ptr;
                        `;

                        return before + i + after;
                    });
                });
        }
    });
})();