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(function(){
'use strict';
// Extend the element method
Element.prototype.wordSeach = function(settings) {
return new WordSeach(this, settings);
}
/**
* Word seach
*
* @param {Element} wrapWl the game's wrap element
* @param {Array} settings
* constructor
*/
function WordSeach(wrapEl, settings) {
this.wrapEl = wrapEl;
this.settings = settings;
// Check the words' length if it is overflow the grid
if (this.parseWords(this.settings.gridSize)) {
// Add words into the martrix data
var isWorked = false;
while (isWorked == false) {
// initialize the application
this.initialize();
isWorked = this.addWords();
}
// Fill up the remaining blank items
this.fillUpFools();
// Draw the martrix into wrap element
this.drawMartrix();
}
}
/**
* Put the words into the martrix
*/
WordSeach.prototype.addWords = function() {
var keepGoing = true,
counter = 0,
isWorked = true;
while (keepGoing) {
var dir = Math.rangeInt(3), // Direction
result = this.addWord(this.settings.words[counter], dir),
isWorked = true;
if (result == false) {
keepGoing = false;
isWorked = false;
}
counter++;
if (counter >= this.settings.words.length) {
keepGoing = false;
}
}
return isWorked;
}
/**
* Add word into the martrix
*/
WordSeach.prototype.addWord = function(word, direction) {
var itWorked = true;
switch (direction) {
case 0: // Horizontal
// New row(y) and col(x)
var row = Math.rangeInt(this.settings.gridSize - 1),
col = Math.rangeInt(this.settings.gridSize - word.length);
for (var i = 0; i < word.length; i++) {
var origin = this.martrix[row][col + i].letter;
if (origin == '.' || origin == word[i]) {
this.martrix[row][col + i].letter = word[i];
} else {
itWorked = false;
}
}
break;
case 1: // vertical
var row = Math.rangeInt(this.settings.gridSize - word.length),
col = Math.rangeInt(this.settings.gridSize - 1);
for (var i = 0; i < word.length; i++) {
var origin = this.martrix[row + i][col].letter;
if (origin == '.' || origin == word[i]) {
this.martrix[row + i][col].letter = word[i];
} else {
itWorked = false;
}
}
break;
case 2: // From top left to bottom right
var row = Math.rangeInt(this.settings.gridSize - word.length),
col = Math.rangeInt(this.settings.gridSize - word.length);
var col = Math.floor(Math.random() * (this.settings.gridSize - word.length + 1)),
row = Math.floor(Math.random() * (this.settings.gridSize - word.length + 1));
for (var i = 0; i < word.length; i++) {
var origin = this.martrix[row + i][col + i].letter;
if (origin == '.' || origin == word[i]) {
this.martrix[row + i][col + i].letter = word[i];
} else {
itWorked = false;
}
}
break;
case 3: // From top right to bottom left
var row = Math.rangeInt(this.settings.gridSize - word.length),
col = Math.rangeInt(word.length - 1, this.settings.gridSize - 1);
for (var i = 0; i < word.length; i++) {
var origin = this.martrix[row + i][col - i].letter;
if (origin == '.' || origin == word[i]) {
this.martrix[row + i][col - i].letter = word[i];
} else {
itWorked = false;
}
}
break;
}
return itWorked;
}
/**
* Initialize the application
*/
WordSeach.prototype.initialize = function() {
/**
* Store the words
*
* param {Array}
*/
this.martrix = [];
this.initMartrix(this.settings.gridSize);
}
WordSeach.prototype.parseWords = function(maxSize) {
var itWorked = true;
for (var i = 0; i < this.settings.words.length; i++) {
// Convert all the letters to upper case
this.settings.words[i] = this.settings.words[i].toUpperCase();
var word = this.settings.words[i];
if (word.length > maxSize) {
alert('The length of word `' + word + '` is overflow the gridSize.');
console.error('The length of word `' + word + '` is overflow the gridSize.');
itWorked = false;
}
}
return itWorked;
}
/**
* Fill default items into the martrix
*/
WordSeach.prototype.initMartrix = function(size) {
for (var row = 0; row < size; row++) {
for (var col = 0; col < size; col++) {
var item = {
'letter': '.' // Default value
}
if (!this.martrix[row]) {
this.martrix[row] = [];
}
this.martrix[row][col] = item;
}
}
}
/**
* Draw the martrix
*/
WordSeach.prototype.drawMartrix = function() {
for (var row = 0; row < this.settings.gridSize; row++) {
// New row
var divEl = document.createElement('div');
this.wrapEl.appendChild(divEl);
for (var col = 0; col < this.settings.gridSize; col++) {
var cvEl = document.createElement('canvas');
cvEl.setAttribute('class', 'ws-letter');
cvEl.setAttribute('width', 40);
cvEl.setAttribute('height', 40);
// Fill text in middle center
var x = cvEl.width / 2,
y = cvEl.height / 2;
var ctx = cvEl.getContext('2d');
ctx.font = '30px Calibri';
ctx.textAlign = 'center';
ctx.fillStyle = '#333'; // Text color
ctx.fillText(this.martrix[row][col].letter, x, y);
divEl.appendChild(cvEl);
}
}
}
/**
* Fill up the remaining blank items
*/
WordSeach.prototype.fillUpFools = function() {
for (var row = 0; row < this.settings.gridSize; row++) {
for (var col = 0; col < this.settings.gridSize; col++) {
if (this.martrix[row][col].letter == '.') {
this.martrix[row][col].letter = String.fromCharCode(Math.rangeInt(65, 90));
}
}
}
}
})();
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