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index.html
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<html lang="en">
<head>
<meta charset="utf-8" />
<title>Circle game</title>
<meta name="description" content="Try and catch it" />
<meta
name="viewport"
content="width=device-width, height=device-height, initial-scale=1, maximum-scale=1.0, user-scalable=no"
/>
<link rel="stylesheet" type="text/css" href="reset.css" />
<link rel="icon" type="image/png" href="favicon.png" />
<link rel="apple-touch-icon" href="favicon.png" />
<!-- Global site tag (gtag.js) - Google Analytics -->
<script
async
src="https://www.googletagmanager.com/gtag/js?id=UA-177518266-1"
></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag() {
dataLayer.push(arguments);
}
gtag("js", new Date());
gtag("config", "UA-177518266-1");
</script>
<style>
* {
/* Disable double tab to zoom on android */
touch-action: manipulation;
}
html {
background-color: black;
user-select: none;
-moz-user-select: none;
-khtml-user-select: none;
-webkit-user-select: none;
-o-user-select: none;
overflow: hidden;
}
#hand-container {
position: relative;
height: 100%;
}
#image-wrapper {
position: relative;
display: inline-block;
left: -150%;
opacity: 0;
/* Debug code */
/* left: 50%; */
/* opacity: 1; */
top: 54%;
}
#neutralize-circle {
position: absolute;
width: 16%;
height: 21%;
left: 45%;
top: 38%;
transform: rotate(20deg);
/* Debug code */
/* border: 1px solid white; */
}
.celebration-container {
display: none;
color: white;
width: 100%;
height: 100%;
z-index: 4;
position: absolute;
align-items: center;
justify-content: center;
flex-direction: row;
}
#me-celebration-title {
font-size: 6vw;
}
#you-celebration-title {
font-size: 9vw;
}
#vs {
margin-right: 15px;
margin-left: 15px;
color: white;
}
#score-container {
display: flex;
justify-content: space-evenly;
align-items: baseline;
}
@media only screen and (max-width: 600px) {
#score-container {
flex-direction: column;
align-items: center;
}
}
.player-container {
color: white;
margin-top: 10px;
display: flex;
align-items: center;
font-size: 22px;
}
#you-score {
display: inline-block;
}
#me-score {
display: inline-block;
}
#dot {
position: fixed;
display: none;
z-index: 2;
width: 10px;
height: 10px;
background-color: white;
border-radius: 50%;
opacity: 0.7;
transform: rotate(20deg);
}
.fade {
-webkit-transition: opacity 500ms ease-in-out;
-moz-transition: opacity 500ms ease-in-out;
-ms-transition: opacity 500ms ease-in-out;
-o-transition: opacity 500ms ease-in-out;
transition: opacity 500ms ease-in-out;
}
.lives {
display: flex;
align-items: center;
justify-content: center;
border: 1px white solid;
min-width: 130px;
padding: 2px;
padding-left: 5px;
padding-right: 5px;
height: 25px;
border-radius: 25px;
font-size: 18px;
}
.lives span {
-webkit-transition: opacity 300ms ease-out;
-moz-transition: opacity 300ms ease-out;
-ms-transition: opacity 300ms ease-out;
-o-transition: opacity 300ms ease-out;
transition: opacity 300ms ease-out;
}
.yellow-border {
border: 1px #ffd809 solid !important;
}
.purple-border {
border: 1px #c433fe solid !important;
}
.player-emoji {
margin-right: 3px;
}
#player-helper {
position: absolute;
opacity: 0;
transition: opacity 0.2s linear;
color: white;
display: flex;
align-items: center;
justify-content: center;
height: 100%;
width: 100%;
font-size: 32px;
}
#player-helper .bold {
font-weight: 600;
}
#player-helper .padding {
padding-left: 16px;
padding-right: 16px;
}
@media screen and (max-width: 800px) {
#player-helper {
font-size: 24px;
}
}
</style>
</head>
<body>
<div id="you-congrats" class="celebration-container">
<div id="you-celebration-title">You 😇 won, good job 🎉</div>
</div>
<div id="me-congrats" class="celebration-container">
<div id="me-celebration-title">Evil 😈 won, better luck next time!</div>
</div>
<div id="player-helper">
<div class="padding">
<span class="bold">Poke the circle</span>
made by the hand to defeat your opponent
</div>
</div>
<div id="score-container">
<div id="you-container" class="player-container">
<span class="player-emoji">😇</span>
<span id="you-lives" class="lives">
<span id="you-life-1">💛</span>
<span id="you-life-2">💛</span>
<span id="you-life-3">💛</span>
<span id="you-life-4">💛</span>
<span id="you-life-5">💛</span>
<span id="you-life-6">💛</span>
</span>
</div>
<div id="me-container" class="player-container">
<span class="player-emoji">😈</span>
<span id="evil-lives" class="lives">
<span id="evil-life-1">💜</span>
<span id="evil-life-2">💜</span>
<span id="evil-life-3">💜</span>
<span id="evil-life-4">💜</span>
<span id="evil-life-5">💜</span>
<span id="evil-life-6">💜</span>
</span>
</div>
</div>
<div id="hand-container">
<div id="image-wrapper" class="fade">
<div id="dot"></div>
<img id="image" src="handje-iets-groter.PNG" />
<div id="neutralize-circle"></div>
</div>
</div>
<script>
const handContainer = document.getElementById("hand-container");
const imageWrapper = document.getElementById("image-wrapper");
const image = document.getElementById("image");
const dot = document.getElementById("dot");
const neutralizeCircle = document.getElementById("neutralize-circle");
const youCongrats = document.getElementById("you-congrats");
const meCongrats = document.getElementById("me-congrats");
const timeTheHandNeedsToMoveOutOfTheScreen = 200;
let currentTime = 0;
const counterTime = 20;
const newTryTime = 4000;
const helperForUserTime = 4000;
const fadeOutHandTime = 500;
let reactionTimeForPlayer = 1000;
let transitionTime = 500;
const sizeOfHand = 35;
const winningScore = 0;
let neutralized = false;
let youScore = 6;
let evilScore = 6;
let mainLoop;
let userHasInteractedWithTheHand = false;
let tapBuffer, quackBuffer;
let tapAudioContext, quackAudioContext;
const handleFirstUserInteractionWithHand = () => {
if (!userHasInteractedWithTheHand) {
userHasInteractedWithTheHand = true;
/* Add a setTimeout here to make sure that the help text is currently not displayed */
setTimeout(() => {
document.getElementById("player-helper").remove();
}, helperForUserTime);
// Cleanup
document.removeEventListener(
"click",
handleFirstUserInteractionWithHand
);
}
};
// Hand being clicked is the indicator that the user understand the game
imageWrapper.addEventListener(
"click",
handleFirstUserInteractionWithHand
);
const startGame = () => {
let startTime;
const start = (timestamp) => {
if (startTime === undefined) {
startTime = timestamp;
}
const elapsed = timestamp - startTime;
if (elapsed > counterTime) {
/* counterTime is an arbitrary increment, with this logic if the
* screen goes out of focus and it is out of focus for e.g. 20 seconds
* one increment is added, when it comes back in focus to the currentTime
* in this case 20 miliseconds
*/
currentTime += counterTime;
}
if (currentTime > newTryTime) {
moveHandInScreen();
setTimersToHandleScoring();
currentTime = 0;
startTime = undefined;
}
mainLoop = requestAnimationFrame(start);
};
requestAnimationFrame(start);
};
startGame();
const setTimersToHandleScoring = () => {
setTimeout(() => {
if (neutralized === false) {
moveHandOutOfScreen();
}
setTimeout(() => {
if (neutralized === false) {
setNewPlayerScore();
}
const isGameFinished = checkIfTheGameIsFinished();
if (!userHasInteractedWithTheHand && !isGameFinished) {
// Stop the game to stop all the timers placed to play the game
// Needed because helperUserTime is to longer and otherwise the hand would
// already appear in the screen
cancelAnimationFrame(mainLoop);
setTimeout(() => {
document.getElementById("player-helper").style.opacity = 1;
setTimeout(() => {
document.getElementById("player-helper").style.opacity = 0;
startGame();
}, helperForUserTime);
}, 800);
}
neutralized = false;
}, timeTheHandNeedsToMoveOutOfTheScreen);
}, reactionTimeForPlayer);
};
const handleNeutralize = (event) => {
requestAnimationFrame(() => {
if (handHasnotBeenNeutralizedYet()) {
neutralized = true;
setNewComputerScore();
showClickCircle(event);
fadeOutTheHand();
setTimeout(() => {
moveHandOutOfScreen();
dot.style.display = "none";
}, fadeOutHandTime);
setNewReactionTimes();
}
// Stop the event from progating and the user to able to zoom/drag the image
event.preventDefault();
event.stopPropagation();
});
};
neutralizeCircle.addEventListener("touchstart", handleNeutralize, false);
neutralizeCircle.addEventListener("mousedown", handleNeutralize, false);
/* debug code */
// neutralizeCircle.addEventListener('mousedown', () => {console.log('click')}, false);
const moveHandInScreen = () => {
addFadeInAnimation();
// You do 100 - the size of the hand to make sure that the hand is always in the screen
// TODO: improve this algorithm
// Left has a small band with than top when the screen is portait
// This is the other way around when the phone is in portrait
imageWrapper.style.left = getRandomInt(100 - (sizeOfHand - 5)) + "%";
imageWrapper.style.top = getRandomInt(100 - (sizeOfHand - 5)) + "%";
};
const addFadeInAnimation = () => {
imageWrapper.style.opacity = 1;
};
const moveHandOutOfScreen = () => {
resetFadeAnimation();
imageWrapper.style.left = "-150%";
imageWrapper.style.top = "-150%";
};
const resetFadeAnimation = () => {
imageWrapper.style.opacity = 0;
};
const checkIfTheGameIsFinished = () => {
if (evilScore <= winningScore) {
youCongrats.style.display = "flex";
stopTheGame();
return true;
}
if (youScore <= winningScore) {
meCongrats.style.display = "flex";
stopTheGame();
return true;
}
};
const showClickCircle = (event) => {
dot.style.display = "inline-block";
const coordinatesNeutralizeCircle = neutralizeCircle.getBoundingClientRect();
let x, y;
var touches = event.touches;
if (touches) {
const touch = touches[0];
x = touch.pageX;
y = touch.pageY;
} else {
x = event.clientX;
y = event.clientY;
}
const halfOfDotWith = 5;
// dot.style.left = x - coordinatesNeutralizeCircle.left - halfOfDotWith;
dot.style.left = x - halfOfDotWith;
// dot.style.top = y - coordinatesNeutralizeCircle.top - halfOfDotWith;
dot.style.top = y - halfOfDotWith;
};
const handHasnotBeenNeutralizedYet = () => neutralized === false;
const setNewReactionTimes = () => {
reactionTimeForPlayer -= 50;
};
const fadeOutTheHand = () => {
imageWrapper.style.opacity = 0;
};
const removeHeart = (id) => {
const heartElement = document.getElementById(id);
heartElement.style.opacity = 0;
};
const playAudio = (buffer, audioContext) => {
const source = audioContext.createBufferSource(); // creates a sound source
source.buffer = buffer; // tell the source which sound to play
source.connect(audioContext.destination); // connect the source to the context's destination (the speakers)
source.start(0);
};
const setNewComputerScore = () => {
setLifesBorderOfPlayerThatLostALifeRed("evil");
removeHeart("evil-life-" + evilScore);
evilScore = evilScore - 1;
if (evilScore !== winningScore) {
playAudio(tapBuffer, tapAudioContext);
}
};
const setNewPlayerScore = () => {
setLifesBorderOfPlayerThatLostALifeRed("you");
removeHeart("you-life-" + youScore);
youScore = youScore - 1;
playAudio(quackBuffer, quackAudioContext);
};
const setLifesBorderOfPlayerThatLostALifeRed = (user) => {
let borderColor = "purple";
if (user === "evil") {
borderColor = "yellow";
}
document
.getElementById(`${user}-lives`)
.classList.add(`${borderColor}-border`);
setTimeout(() => {
document
.getElementById(`${user}-lives`)
.classList.remove(`${borderColor}-border`);
}, 1000);
};
const getBrowserWidth = () => document.body.clientWidth;
const getBrowserHeight = () => document.body.clientHeight;
const setHandSizeBasedOnScreenSize = () => {
const screenWidth = getBrowserWidth();
const screenHeight = getBrowserHeight();
if (screenWidth < screenHeight) {
imageWrapper.style.width = "45%";
image.style.width = "100%";
} else {
imageWrapper.style.height = "45%";
image.style.height = "100%";
}
};
setHandSizeBasedOnScreenSize();
const disableZoomAndDragAbilities = () => {
window.addEventListener(
"touchstart",
() => {
if (event.touches.length > 1) {
event.preventDefault();
}
},
false
);
image.setAttribute("draggable", false);
};
disableZoomAndDragAbilities();
const stopTheGame = () => {
cancelAnimationFrame(mainLoop);
};
const getRandomInt = (max) => Math.floor(Math.random() * Math.floor(max));
const supportsTouch =
"ontouchstart" in window || navigator.msMaxTouchPoints;
const createAudioContext = (url) => {
// Audio context is used to not make audio that is already playing on a mobile phone to be stopped.
window.AudioContext = window.AudioContext || window.webkitAudioContext;
// All modern browser support this, therefore no fallback provided
const audioContext = new AudioContext();
const request = new XMLHttpRequest();
request.open("GET", url, true);
request.responseType = "arraybuffer";
// Decode asynchronously
request.onload = () => {
audioContext.decodeAudioData(
request.response,
(buffer) => {
if (url.includes("tap")) {
tapBuffer = buffer;
} else {
quackBuffer = buffer;
}
},
(error) => {
console.log(`sound ${url} could not be loaded `, error);
}
);
};
request.send();
return audioContext;
};
tapAudioContext = createAudioContext("tap.wav");
quackAudioContext = createAudioContext("quack.wav");
</script>
</body>
</html>