Jstris Parity Script

calculates difference between white and black blocks

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 Parity Script
// @namespace    http://tampermonkey.net/
// @version      1.3
// @description  calculates difference between white and black blocks
// @author       frey and truebulge (mostly frey)
// @match        https://*.jstris.jezevec10.com/*
// @grant        none
// ==/UserScript==

/**************************
   Parity Script
**************************/
(function() {
    window.addEventListener('load', function(){

        var rect = holdCanvas.getBoundingClientRect();
        var p = document.createElement("div");
        p.id = "pace"
        p.style = ("color:#999;width:150px;position:absolute;top:"+(rect.top+100)+"px;left:"+(rect.left-50)+"px")
        p.innerHTML = `
	<table style='width:100%;height:100%;table-layout:fixed;'>
	  <tr>
	    <th style='text-align:center' colspan="2">Parity:</th>
	  </tr>
	  <tr>
	    <td id='parity'>0</td>
	  </tr>
	</table>
	`
        document.body.appendChild(p);
        let repActive = true

        if(typeof Replayer != "undefined"){
            const styleTag = document.createElement("style");
            styleTag.innerText = "#BG_only{background-color:#000000;background-size:auto;}";
            let head = document.querySelector("head");
            head.appendChild(styleTag);

            Replayer.prototype.checkParity = function(){
                if(!repActive)return
                var parity = document.getElementById('parity');
                let board = this.matrix
                let whites = 0
                let blacks = 0
                for(let col in board[0]){
                    for(let row =-1; row< board.length; row++){
                        let b = this.deadline[col]
                        if(row>=0)b = board[row][col]
                        if(b==0)continue
                        if(col%2==0)whites+=1
                        else blacks+=1
                    }
                }
                let vert = whites-blacks
                whites = 0
                blacks = 0
                for(let row =-1; row< board.length; row++){
                    for(let col in board[0]){
                        let b = this.deadline[col]
                        if(row>=0)b = board[row][col]
                        if(b==0)continue
                        if(row%2==0)whites+=1
                        else blacks+=1
                    }
                }
                let horiz = whites - blacks
                blacks = 0
                whites = 0
                for(let row in board){
                    for(let col in board){
                        if(row%2==col%2){
                            whites += board[row][col]!=0
                        }
                        else{
                            blacks +=board[row][col]!=0
                        }
                    }
                }
                for(let col = 0; col < this.deadline.length; col++){
                    if(col%2==0)blacks+= this.deadline[col]!=0
                    else whites+= this.deadline[col]!=0
                }
                let check = whites - blacks
                parity.innerHTML= "vert " + vert + " horiz " + horiz + " check " + check
            }
            let replayer_next_block = Replayer.prototype.getNextBlock;
            Replayer.prototype.getNextBlock = function() {
                let val = replayer_next_block.apply(this, arguments);
                this.checkParity();
                return val
            };

            let replayer_add_garbage = Replayer.prototype.addGarbage;
            Replayer.prototype.addGarbage = function() {
                let val = replayer_add_garbage.apply(this, arguments);
                this.checkParity();
                return val
            };
        }



        if(typeof Game != "undefined"){
            repActive = false
            const styleTag = document.createElement("style");
            styleTag.innerText = "#BG_only{background-color:#000000;background-size:auto;}";
            let head = document.querySelector("head");
            head.appendChild(styleTag);


            Game.prototype.checkParity = function(){
                var parity = document.getElementById('parity');
                let board = this.matrix
                let whites = 0
                let blacks = 0
                for(let col in board[0]){
                    for(let row =-1; row< board.length; row++){
                        let b = this.deadline[col]
                        if(row>=0)b = board[row][col]
                        if(b==0)continue
                        if(col%2==0)whites+=1
                        else blacks+=1
                    }
                }
                let vert = whites-blacks
                whites = 0
                blacks = 0
                for(let row =-1; row< board.length; row++){
                    for(let col in board[0]){
                        let b = this.deadline[col]
                        if(row>=0)b = board[row][col]
                        if(b==0)continue
                        if(row%2==0)whites+=1
                        else blacks+=1
                    }
                }
                let horiz = whites - blacks
                blacks = 0
                whites = 0
                for(let row in board){
                    for(let col in board){
                        if(row%2==col%2){
                            whites += board[row][col]!=0
                        }
                        else{
                            blacks +=board[row][col]!=0
                        }
                    }
                }
                for(let col = 0; col < this.deadline.length; col++){
                    if(col%2==0)blacks+= this.deadline[col]!=0
                    else whites+= this.deadline[col]!=0
                }
                let check = whites - blacks
                parity.innerHTML= "vert " + vert + " horiz " + horiz + " check " + check
            }
            let game_next_block = Game.prototype.getNextBlock;
            Game.prototype.getNextBlock = function() {
                let val = game_next_block.apply(this, arguments);
                this.checkParity();
                return val
            };

            let game_add_garbage = Game.prototype.addGarbage;
            Game.prototype.addGarbage = function() {
                let val = game_add_garbage.apply(this, arguments);
                this.checkParity();
                return val
            };
        }



    }

                           );
})();