readme.md

8 Puzzle

8 puzzle game implemented with vanilla JavaScript.

Features

Moving the tiles

When the tile is in the right position, the background color is blue. Otherwise, its background color is red.

function recolorTile(tile, tileId) {
  if (tileId == tileMap[tileId].position) {
    tile.classList.remove("error");
  } else {
    tile.classList.add("error");
  }
}

Shuffle

The shuffle function will perform 20 random moves.

 function shuffle() {
   clearTimers(solveTimeouts);
   var boardTiles = document.querySelectorAll('.tile');
   var shuffleDelay = 200;
   shuffleLoop();

   var shuffleCounter = 0;
   while (shuffleCounter < 20) {
     shuffleDelay += 200;
     shuffleTimeouts.push(setTimeout(shuffleLoop, shuffleDelay));
     shuffleCounter++;
   }
 }

Solve

The solve function will solve the puzzle naively. I would optimize it with algorithms

 function solve() {
   clearTimers(shuffleTimeouts);


   repeater = history.length;

   for (var i = 0; i < repeater; i++) {
     console.log("started");
     solveTimeouts.push(setTimeout(moveTile, i*100, tiles[history.pop()-1], false));
   }
 }