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madan712/2048_puzzle.html

Last active September 19, 2023 14:16
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Javascript source code for 2048 puzzle
Raw
2048_puzzle.html
<!DOCTYPE html>
<html>
<head>
<title> Javascript : 2048 puzzle</title>
</head>
<body>
<center>
<a style="cursor: pointer; padding-left: 10%;" onclick="return load();">new game</a>
<div id="canvas"></div>
<h2>Score : <div style="display:inline;" id="score"></div></h2>
<b>HOW TO PLAY:</b> Use your arrow keys to move the tiles.
</center>
<script type="text/javascript">
<!--
//Size of the grid
var size = 4;
var min = 0;
var max = size - 1;
var isMoved = false;
var score = 0;
var excludeIds = [];
function load() {
//alert("load");
//Load the table
var html = '<table border="1">';
for(var row=0;row<size;row++) {
html += '<tr>';
for(var col=0;col<size;col++) {
var id = row+""+col;
html += '<td align="center" valign="center" height="40" width="40" id="'+id+'"></td>';
}
html += '</tr>';
}
html += '</table>';
//alert(html);
document.getElementById("canvas").innerHTML = html;
var id1 = getId();
var id2 = "";
while(true) {
id2 = getId();
if(id1 != id2)
break;
}
//Set initial 2 values
document.getElementById(id1).innerHTML = "2";
document.getElementById(id2).innerHTML = "2";
document.getElementById(id1).style.backgroundColor = getColor(2);
document.getElementById(id2).style.backgroundColor = getColor(2);
score = 0;
document.getElementById("score").innerHTML = score;
return false;
}
function getRandom()
{
return Math.floor(Math.random()*(max-min+1)+min);
}
function getId()
{
var i = getRandom();
var j = getRandom();
return i+""+j;
}
function up() {
isMoved = false;
excludeIds = [];
for(var j=min;j<=max;j++) {
for(var i=min;i<=max;i++) {
var id = i+""+j;
if(document.getElementById(id).innerHTML != "") {
moveUp(id);
}
}
}
if(isMoved == true) {
update();
}
return false;
}
function moveUp(id) {
if(!id.startsWith(min)) {
var arr = id.split("");
var i = parseInt(arr[0]);
var j = parseInt(arr[1]);
for(var k=(i-1);k>=min;k--) {
var nId = k+""+j;
if(document.getElementById(nId).innerHTML != "") {
var val = parseInt(document.getElementById((k+1)+""+j).innerHTML);
var nVal = parseInt(document.getElementById(nId).innerHTML);
if(val == nVal) {
if(excludeIds.indexOf(nId) == -1){
excludeIds.push(nId);
document.getElementById(nId).innerHTML = (val+nVal);
document.getElementById(nId).style.backgroundColor = getColor((val+nVal));
document.getElementById((k+1)+""+j).innerHTML = "";
document.getElementById((k+1)+""+j).style.backgroundColor = "#ffffff";
isMoved = true;
score += (val+nVal);
}
}
break;
}
else {
document.getElementById(nId).innerHTML = document.getElementById((k+1)+""+j).innerHTML;
document.getElementById(nId).style.backgroundColor = document.getElementById((k+1)+""+j).style.backgroundColor;
document.getElementById((k+1)+""+j).innerHTML = "";
document.getElementById((k+1)+""+j).style.backgroundColor = "#ffffff";
isMoved = true;
}
}
}
return false;
}
function left() {
isMoved = false;
excludeIds = [];
for(var i=min;i<=max;i++) {
for(var j=min;j<=max;j++) {
var id = i+""+j;
if(document.getElementById(id).innerHTML != "") {
moveLeft(id);
}
}
}
if(isMoved == true) {
update();
}
return false;
}
function moveLeft(id) {
if(!id.endsWith(min)) {
var arr = id.split("");
var i = parseInt(arr[0]);
var j = parseInt(arr[1]);
for(var k=(j-1);k>=min;k--) {
var nId = i+""+k;
if(document.getElementById(nId).innerHTML != "") {
var val = parseInt(document.getElementById(i+""+(k+1)).innerHTML);
var nVal = parseInt(document.getElementById(nId).innerHTML);
if(val == nVal) {
if(excludeIds.indexOf(nId) == -1){
excludeIds.push(nId);
document.getElementById(nId).innerHTML = (val+nVal);
document.getElementById(nId).style.backgroundColor = getColor((val+nVal));
document.getElementById(i+""+(k+1)).innerHTML = "";
document.getElementById(i+""+(k+1)).style.backgroundColor = "#ffffff";
isMoved = true;
score += (val+nVal);
}
}
break;
}
else {
document.getElementById(nId).innerHTML = document.getElementById(i+""+(k+1)).innerHTML;
document.getElementById(nId).style.backgroundColor = document.getElementById(i+""+(k+1)).style.backgroundColor;
document.getElementById(i+""+(k+1)).innerHTML = "";
document.getElementById(i+""+(k+1)).style.backgroundColor = "#ffffff";
isMoved = true;
}
}
}
return false;
}
function down() {
isMoved = false;
excludeIds = [];
for(var i=min;i<=max;i++) {
for(var j=max;j>=min;j--) {
var id = j+""+i;
if(document.getElementById(id).innerHTML != "") {
moveDown(id);
}
}
}
if(isMoved == true) {
update();
}
return false;
}
function moveDown(id) {
if(!id.startsWith(max)) {
var arr = id.split("");
var i = parseInt(arr[0]);
var j = parseInt(arr[1]);
for(var k=(i+1);k<=max;k++) {
var nId = k+""+j;
if(document.getElementById(nId).innerHTML != "") {
var val = parseInt(document.getElementById((k-1)+""+j).innerHTML);
var nVal = parseInt(document.getElementById(nId).innerHTML);
if(val == nVal) {
if(excludeIds.indexOf(nId) == -1){
excludeIds.push(nId);
document.getElementById(nId).innerHTML = (val+nVal);
document.getElementById(nId).style.backgroundColor = getColor((val+nVal));
document.getElementById((k-1)+""+j).innerHTML = "";
document.getElementById((k-1)+""+j).style.backgroundColor = "#ffffff";
isMoved = true;
score += (val+nVal);
}
}
break;
}
else {
document.getElementById(nId).innerHTML = document.getElementById((k-1)+""+j).innerHTML;
document.getElementById(nId).style.backgroundColor = document.getElementById((k-1)+""+j).style.backgroundColor;
document.getElementById((k-1)+""+j).innerHTML = "";
document.getElementById((k-1)+""+j).style.backgroundColor = "#ffffff";
isMoved = true;
}
}
}
return false;
}
function right() {
isMoved = false;
excludeIds = [];
for(var i=min;i<=max;i++) {
for(var j=max;j>=min;j--) {
var id = i+""+j;
if(document.getElementById(id).innerHTML != "") {
moveRight(id);
}
}
}
if(isMoved == true) {
update();
}
return false;
}
function moveRight(id) {
if(!id.endsWith(max)) {
var arr = id.split("");
var i = parseInt(arr[0]);
var j = parseInt(arr[1]);
for(var k=(j+1);k<=max;k++) {
var nId = i+""+k;
if(document.getElementById(nId).innerHTML != "") {
var val = parseInt(document.getElementById(i+""+(k-1)).innerHTML);
var nVal = parseInt(document.getElementById(nId).innerHTML);
if(val == nVal) {
if(excludeIds.indexOf(nId) == -1){
excludeIds.push(nId);
document.getElementById(nId).innerHTML = (val+nVal);
document.getElementById(nId).style.backgroundColor = getColor((val+nVal));
document.getElementById(i+""+(k-1)).innerHTML = "";
document.getElementById(i+""+(k-1)).style.backgroundColor = "#ffffff";
isMoved = true;
score += (val+nVal);
}
}
break;
}
else {
document.getElementById(nId).innerHTML = document.getElementById(i+""+(k-1)).innerHTML;
document.getElementById(nId).style.backgroundColor = document.getElementById(i+""+(k-1)).style.backgroundColor;
document.getElementById(i+""+(k-1)).innerHTML = "";
document.getElementById(i+""+(k-1)).style.backgroundColor = "#ffffff";
isMoved = true;
}
}
}
return false;
}
function update() {
//Add new value
var ids = [];
for(var i=min;i<=max;i++) {
for(var j=min;j<=max;j++) {
var id = i+""+j;
if(document.getElementById(id).innerHTML == "") {
ids.push(id);
}
}
}
var id = ids[Math.floor(Math.random()*ids.length)];
document.getElementById(id).innerHTML = "2";
document.getElementById(id).style.backgroundColor = getColor(2);
//Check if no move space available
var allFilled = true;
for(var i=min;i<=max;i++) {
for(var j=min;j<=max;j++) {
var id = i+""+j;
if(document.getElementById(id).innerHTML == "") {
allFilled = false;
break;
}
}
}
//Update score
document.getElementById("score").innerHTML = score;
if(allFilled) {
checkGameOver();
}
}
function checkGameOver() {
var isOver = true;
for(var j=min;j<=max;j++) {
for(var i=min;i<=(max-1);i++) {
//alert(i+" "+j);
var val = parseInt(document.getElementById(i+""+j).innerHTML);
var nVal = parseInt(document.getElementById((i+1)+""+j).innerHTML);
if(val == nVal) {
isOver = false;
break;
}
}
}
if(isOver == true) {
for(var i=min;i<=max;i++) {
for(var j=min;j<=(max-1);j++) {
//alert(i+" "+j);
var val = parseInt(document.getElementById(i+""+j).innerHTML);
var nVal = parseInt(document.getElementById(i+""+(j+1)).innerHTML);
if(val == nVal) {
isOver = false;
break;
}
}
}
}
if(isOver) {
alert("Game over!");
}
return false;
}
function getColor(val)
{
var color = "#ffffff";
switch(val) {
case 2: color = "#F6CED8"; break;
case 4: color = "#F7BE81"; break;
case 8: color = "#F3F781"; break;
case 16: color = "#BEF781"; break;
case 32: color = "#81F7D8"; break;
case 64: color = "#58D3F7"; break;
case 128: color = "#FA58F4"; break;
case 256: color = "#A901DB"; break;
case 512: color = "#01DF3A"; break;
case 1024: color = "#D7DF01"; break;
case 2048: color = "#D7DF01"; break;
default: color = "#ffffff";
}
return color;
}
if ( typeof String.prototype.startsWith != 'function' ) {
String.prototype.startsWith = function( str ) {
return this.substring( 0, str.length ) === str;
}
};
if ( typeof String.prototype.endsWith != 'function' ) {
String.prototype.endsWith = function( str ) {
return this.substring( this.length - str.length, this.length ) === str;
}
};
document.onkeydown = function(e) {
e.preventDefault();//to prevent scroll of screen
switch (e.keyCode) {
case 37:
left();
break;
case 38:
up();
break;
case 39:
right();
break;
case 40:
down();
break;
}
};
//calling load method
load();
//-->
</script>
</body>
</html>
@superiorsupercat
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Hippity Hoppity, Your code is now my property.

@Shinenju1
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Hippity Hoppity, Your code is now my property.
x2

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