So I am trying to code something similar to candy crush and am currently working on the array logic. The problem is however, that the array logic doesn’t seem to want to work in Javascript. I have done this project in Python’s Pygame already and this is the process of moving it over to Javascript, a language I’ve never used before, so bear with me.
As far as the problem, I am basically trying to generate a random array, remove all connected components larger than 3, replace them with zeros, shift the zeros to the top, then replace the zeros with random integers and repeat the process again until there are no connected components with a bigger size than 3. The problem however, is that the process doesn’t seem to finish (final print statements don’t print) and this makes me wonder if there is an infinite loop somewhere that I don’t see, or another issue. The compiler I was using was: https://www.programiz.com/javascript/online-compiler/, so it could be that the “break” it, but I doubt it.
As far as a minimum reproducable sample, here:
const candy_codes = {
1: '/candies/Blue.png',
2: '/candies/Green.png',
3: '/candies/Orange.png',
4: '/candies/Purple.png',
5: '/candies/Red.png',
6: '/candies/Yellow.png',
7: '/candies/BlueWrapped.png',
8: '/candies/GreenWrapped.png',
9: '/candies/OrangeWrapped.png',
10: '/candies/PurpleWrapped.png',
11: '/candies/RedWrapped.png',
12: '/candies/YellowWrapped.png'
};
const numOfRows = 9;
const numOfCols = 9;
let grid;
let gridContainerElem;
let visited
function createGridArray() {
grid = new Array(numOfRows);
for (let i = 0; i < numOfRows; i++) {
grid[i] = new Array(numOfCols);
}
}
function createImageGrid() {
const maxNumOfCandyCodes = Object.keys(candy_codes).length - 6;
for (let i = 0; i < numOfRows; i++) {
// Generate image elements within row container
for (let j = 0; j < numOfCols; j++) {
image_num = (Math.floor(Math.random() * maxNumOfCandyCodes) + 1);
grid[i][j] = image_num;
}
}
}
function createVisted(){
visited = new Array(numOfRows);
for (let i = 0; i < numOfRows; i++) {
visited[i] = new Array(numOfCols);
}
}
function clearVisited(){
for (var i =0 ; i < numOfRows; i++){
for (var j = 0 ; j < numOfCols; j++){
visited[i][j] = false;
}
}
}
function printGridArray() {
for (let i = 0; i < grid.length; i++) {
let ranText = "";
for (let j = 0; j < grid[i].length; j++) {
ranText += grid[i][j];
ranText += " ";
}
console.log(ranText);
}
console.log("Done printing!");
}
function dfs(i, j, grid) {
let original_Value = grid[i][j];
let stack = [[i, j]];
let size = 0;
while (stack.length != 0) {
let [x, y] = stack.pop();
visited[x][y] = true;
size += 1;
if (x + 1 < grid.length && grid[x + 1][y] == original_Value && !visited[x + 1][y]) {
stack.push([x + 1, y]);
}
if (x - 1 >= 0 && grid[x - 1][y] == original_Value && !visited[x - 1][y]) {
stack.push([x - 1, y]);
}
if (y + 1 < grid[x].length && grid[x][y + 1] == original_Value && !visited[x][y + 1]) {
stack.push([x, y + 1]);
}
if (y - 1 >= 0 && grid[x][y - 1] == original_Value && !visited[x][y - 1]) {
stack.push([x, y - 1]);
}
}
return size;
}
function changingDFS(i, j, grid){
let original_Value = grid[i][j];
let stack = [[i, j]];
clearVisited();
while (stack.length != 0){
let [x,y] = stack.pop();
grid[x][y] = 0;
visited[x][y] = true;
if (x + 1 < grid.length && grid[x + 1][y] == original_Value && !visited[x + 1][y]) {
stack.push([x + 1, y]);
}
if (x - 1 >= 0 && grid[x - 1][y] == original_Value && !visited[x - 1][y]) {
stack.push([x - 1, y]);
}
if (y + 1 < grid[x].length && grid[x][y + 1] == original_Value && !visited[x][y + 1]) {
stack.push([x, y + 1]);
}
if (y - 1 >= 0 && grid[x][y - 1] == original_Value && !visited[x][y - 1]) {
stack.push([x, y - 1]);
}
}
return clearVisited();
}
function eraseValidMoves() {
var changesDone = false;
clearVisited();
for (let i = 0; i < numOfRows; i++) {
for (let j = 0; j < numOfCols; j++) {
if (!visited[i][j]) {
var size = dfs(i, j, grid, visited);
if (size >= 3) {
changingDFS(i,j , grid);
gravity();
changesDone = true;
}
}
}
}
clearVisited()
return changesDone;
}
function gravity(){
const maxNumOfCandyCodes = Object.keys(candy_codes).length - 6;
for (let j =0 ; j < grid[0].length; j++){
var temp = [];
for (let i = 0; i < grid.length; i++){
if (grid[i][j] == 0){
temp.unshift((Math.floor(Math.random() * maxNumOfCandyCodes) + 1));
}
else {
temp.push(grid[i][j]);
}
}
for (let i = 0; i < temp.length; i++){
grid[i][j] = temp.shift();
}
}
}
createGridArray();
createImageGrid();
printGridArray();
createVisted();
clearVisited();
var erase = true;
while (erase){
erase = eraseValidMoves();
}
console.log("All done!")
printGridArray();
That will work to get you the same error as I am. If you wanted to see the Python code that I am basing it off of: https://github.com/frankvp11/CandyCrush2.0/blob/main/candies.py
The functions that are basically shared right now are: is_valid, bfs, checker, custombfs, printgrid and gravity.
