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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no" />
<style>
.warning {
color: #FF4136;
font-weight: bold;
}
.btn {
background-color: #0074D9;
border: none;
color: #fff;
display: inline-block;
font-weight: bold;
text-shadow: 2px 2px 1px rgba(0, 0, 0, 0.3);
text-decoration: none;
}
.btn[disabled] {
background-color: #AAAAAA !important;
border: 1px dotted black;
}
#next-button {
display: block;
width: 100%;
height: 35%;
position: absolute;
bottom: 0;
font-size: 3em;
}
#start-button {
background-color: #2ECC40;
float: left;
height: 15%;
font-size: 2em;
display: block;
width: 50%;
bottom: 0;
}
#reset-button {
display: block;
background-color: #FF4136;
font-size: 2em;
height: 15%;
width: 50%;
float: right;
}
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#players {
font-size: 3.5em;
margin: auto auto;
}
#add-player-form {
margin: auto auto;
font-size: 20px;
}
.player-wrapper {
overflow-y: auto;
padding: 5px;
height: 50%;
}
</style>
<script type="text/javascript">
var players = [];
var defaultStartTime = 300;
var timesRemaining = [];
var currentPlayer = 0;
var previousPlayers = [];
var countdownTimer;
var gameState = 'adding-players';
function addPlayer(){
var nameField = document.getElementById("name-field");
var playerName = nameField.value;
nameField.value = '';
players.push(playerName);
timesRemaining.push(defaultStartTime);
renderView();
return false;
}
function renderView() {
var startButton = document.getElementById('start-button');
var resetButton = document.getElementById('reset-button');
var addPlayerForm = document.getElementById('add-player-form');
switch (gameState) {
case 'playing':
startButton.disabled = true;
resetButton.disabled = false;
addPlayerForm.style.display = 'none';
break;
case 'ready':
startButton.disabled = false;
resetButton.disabled = true;
break;
}
updateScoreboard();
scrollActivePlayerIntoView();
scrollAddPlayerFormIntoView();
}
function scrollAddPlayerFormIntoView() {
var alignWithTop = false;
var addPlayerForm = document.getElementById('add-player-form');
addPlayerForm.scrollIntoView(alignWithTop);
}
function scrollActivePlayerIntoView() {
var alignWithTop = false;
var activePlayer = document.getElementById('active-player');
activePlayer.scrollIntoView(alignWithTop);
}
function updateScoreboard() {
var scoreboard = document.getElementById("players");
var html = "";
for(var i = 0; i < players.length; i++){
var playerTime = timesRemaining[i];
var formattedName = formatPlayer(i);
var formattedTime = formatTime(playerTime);
html += "<tr><td>" + formattedName + "</td><td>" + formattedTime + "</td></tr>";
}
scoreboard.innerHTML = html;
}
function setPlayersFromPrevious(previousPlayerIndex) {
players = previousPlayers[previousPlayerIndex];
timesRemaining = [];
for (var i = 0; i < players.length; i++) {
timesRemaining.push(defaultStartTime);
}
renderView();
}
function loadPreviousPlayers () {
previousPlayers = JSON.parse(localStorage.getItem('previousPlayers') || '[]');
html = '';
for (var i = 0; i < previousPlayers.length; i++) {
html += '<li><button onclick="setPlayersFromPrevious(' + i +
')">Load players</button> ';
for (var j = 0; j < previousPlayers[i].length; j++) {
html += escapeHtml(previousPlayers[i][j]);
if (j !== previousPlayers[i].length - 1) {
html += ', ';
}
}
html += '</li>';
}
document.getElementById('previousPlayers').innerHTML = html;
}
function formatPlayer(playerNumber) {
var formattedPlayer = escapeHtml(players[playerNumber]);
if (playerNumber == currentPlayer) {
formattedPlayer = '<strong id="active-player">' + formattedPlayer +
'</strong>';
}
return formattedPlayer;
}
function startGame(){
document.getElementById('previousPlayers').style.display = 'none';
gameState = 'playing';
renderView();
countdownTimer = setInterval(function(){
timesRemaining[currentPlayer] -= 1;
renderView();
}, 1000);
savePlayers(players);
}
function savePlayers (players) {
var previousPlayers = JSON.parse(localStorage.getItem('previousPlayers') || '[]');
previousPlayers.splice(0, 0, players);
previousPlayers = removeDuplicates(previousPlayers);
// Truncate to only store last three sets of players
previousPlayers = previousPlayers.slice(0, 3);
localStorage.setItem('previousPlayers', JSON.stringify(previousPlayers));
}
function removeDuplicates(listOflists) {
var uniqueElements = [];
var foundElements = [];
listOflists.forEach(function (list) {
var listAsString = '' + list;
if (foundElements.indexOf(listAsString) === -1) {
foundElements.push(listAsString);
uniqueElements.push(list);
}
});
return uniqueElements;
}
function nextPlayer(){
currentPlayer = (currentPlayer +1) % players.length;
if (gameState === 'playing') {
timesRemaining[currentPlayer] += 3;
}
renderView();
}
function escapeHtml(untrusted) {
return untrusted
.replaceAll(/["'&<>]/g, function (substring) {
switch (substring.charCodeAt(0)) {
case 34: // "
return '"'
case 39: // '
return '''
case 38: // &
return '&'
case 60: // <
return '<'
case 62: // >
return '>'
}
});
}
function formatTime(totalSeconds){
var sign = totalSeconds < 0 ? '-' : '';
var minutes = Math.floor(Math.abs(totalSeconds) / 60);
var seconds = Math.abs(totalSeconds % 60);
if (seconds < 10) {
seconds = "0" + seconds;
}
var formattedTime = sign + minutes + ":" + seconds;
if (totalSeconds < 30) {
formattedTime = '<span class="warning">' + formattedTime +
'</span>';
}
return formattedTime;
}
function resetGame() {
for (var i = 0; i < players.length; i++) {
timesRemaining[i] = defaultStartTime;
}
clearInterval(countdownTimer);
gameState = 'ready';
renderView();
}
window.onload = loadPreviousPlayers;
</script>
</head>
<body>
<div class="player-wrapper">
<ul id="previousPlayers">
</ul>
<table id="players">
</table>
<form id="add-player-form" onsubmit="return addPlayer()">
<input id="name-field" name="name" placeholder="Player name">
<input type="submit" value="Add Player" class="btn">
</form>
</div>
<button id="start-button"
class="btn"
onclick="startGame()">
START
</button>
<button id="reset-button"
class="btn"
onclick="resetGame()"
disabled>
RESET
</button>
<button id='next-button'
onclick="nextPlayer()"
class="btn">
NEXT
</button>
</body>
</html>