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snakeGame.html
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snakeGame.html
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<!DOCTYPE html>
<html>
<head>
<title>Snake Game</title>
<!-- <script type="text/javascript" src="jQuery.js"></script> -->
<script type="text/javascript" src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<div class="box">
<div class="intro">
<u><h1>SNAKE GAME</h1></u>
<div class="content">
<h2>Instructions :</h2>
<ul>
<li>Use <span>'LEFT ARROW'</span> key OR <span>'A'</span> to move left.</li>
<li>Use <span>'UP ARROW'</span> key OR <span>'W'</span> to move upwords.</li>
<li>Use <span>'RIGHT ARROW'</span> key OR <span>'D'</span> to move right.</li>
<li>Use <span>'DOWN ARROW'</span> key OR <span>'S'</span> to move downwords.</li>
<li>Eat food <div class="foodBox"></div> to make your snake Grow.</li>
<li>Eat bonus food <div class="bonusFoodBox"></div> to make your score high.</li>
<li><div class="foodBox"></div> SCORE <b> : +2 | </b><div class="bonusFoodBox"></div> SCORE <b> : +5 </b></li>
<li>Eat bonus before it disappears <span>(within 3 sec)</span>.</li>
<li>Use <span>Space</span> to <b>PAUSE</b>.</li>
</ul>
</div>
</div>
<div class="scoreBox">
<h1 class="scroreBox">SCORE : <span id="score"></span> </h1>
</div>
<button class="restart">RESTART</button>
<div class="tag">
<h1>Designed & Developed By : Motasim (+91 7409856583)</h1>
</div>
<canvas height="500px" width="500px" id="can" />
</div>
<script type="text/javascript">
var can=document.getElementById('can').getContext('2d');
var HEIGHT=500,WIDTH=500;
var snakeList,foodList,direction,eaten,eatenBonus,prevDirection,intervalVar,score=0,isRunning=false,isStop=false;
var eatenCount=0,speed=40,changeSpeed,gameOverStatus=false;
can.font='40px calibri';
can.strokeText('Click Me To Start The Game',30,260);
var snakeBody={
width:20,
height:20,
color:'maroon'
};
var food={
width:20,
height:20,
color:'magenta'
};
var foodBonus={
width:25,
height:25,
color:'red'
};
$(document).ready(function(){
$('.restart').on('click',function(){
history.go();
});
});
document.onkeydown=function(event){
//0-left|1-up|2=right|3-down
if((event.keyCode==37||event.keyCode==97||event.keyCode==65)&&prevDirection!=2){
direction=0;
// console.log(direction);
}
else if((event.keyCode==38||event.keyCode==119||event.keyCode==87)&&prevDirection!=3){
direction=1;
//console.log(direction);
}
else if((event.keyCode==39||event.keyCode==100||event.keyCode==68)&&prevDirection!=0){
direction=2;
//console.log(direction);
}
else if((event.keyCode==40||event.keyCode==115||event.keyCode==83)&&prevDirection!=1){
direction=3;
//console.log(direction);
}
prevDirection=direction;
if((event.keyCode==32)&&(isRunning)&&(!gameOverStatus)){
if(isStop){
intervalVar=setInterval(updateSnakePosition,speed);
}
else{
clearInterval(intervalVar);
can.font='40px "Times New Roman"';
can.strokeText('PAUSED',180,260);
}
isStop=(!isStop);
}
}
testCollision=function(snakePosition,foodPostion){
return(
(snakePosition.x<=foodPostion.x+food.width)&&
(foodPostion.x<=snakePosition.x+snakeBody.width)&&
(snakePosition.y<=foodPostion.y+food.width)&&
(foodPostion.y<=snakePosition.y+snakeBody.width)
);
}
testCollisionSnake=function(snakeHead,snakeTail){
return(
(Math.abs(snakeHead.x-snakeTail.x)<5)&&
(Math.abs(snakeHead.y-snakeTail.y)<5)
);
}
function drawSnake(sb,i){
can.save();
if(i==0)
can.fillStyle='black';
else if(i%2)
can.fillStyle='brown';
else
can.fillStyle=snakeBody.color;
can.fillRect(sb.x,sb.y,snakeBody.width,snakeBody.height);
can.restore();
}
function drawFood(f,i){
can.save();
if(i==0){
can.fillStyle=food.color;
// can.beginPath();
can.fillRect(f.x,f.y,food.width,food.height);
// can.arc(f.x,f.y,food.width/2,0,2*Math.PI,false);
// can.fill();
}
else if(i==1){
can.fillStyle=foodBonus.color;
can.fillRect(f.x,f.y,foodBonus.width,foodBonus.height);
}
can.restore();
}
updateSnakeList=function(){
for(var i=snakeList.length-1;i>=0;i--){
if(direction==0){
if(i==0){
snakeList[i].x=snakeList[i].x-5;
}
else{
snakeList[i].x=snakeList[i-1].x;
snakeList[i].y=snakeList[i-1].y;
}
}
else if(direction==1){
if(i==0){
snakeList[i].y=snakeList[i].y-5;
}
else{
snakeList[i].x=snakeList[i-1].x;
snakeList[i].y=snakeList[i-1].y;
}
}
else if(direction==2){
if(i==0){
snakeList[i].x=snakeList[i].x+5;
}
else{
snakeList[i].x=snakeList[i-1].x;
snakeList[i].y=snakeList[i-1].y;
}
}
else if(direction==3){
if(i==0){
snakeList[i].y=snakeList[i].y+5;
}
else{
snakeList[i].x=snakeList[i-1].x;
snakeList[i].y=snakeList[i-1].y;
}
}
}
}
checkSnakePosition=function(){
if(snakeList[0].x>500){
snakeList[0].x=0;
}
if(snakeList[0].x<0){
snakeList[0].x=500;
}
if(snakeList[0].y>500){
snakeList[0].y=0;
}
if(snakeList[0].y<0){
snakeList[0].y=500;
}
}
isGameOver=function(){
for(i in snakeList){
if(i==0)
continue;
if(testCollisionSnake(snakeList[0],snakeList[i])){
clearInterval(intervalVar);
setTimeout(function(){
can.clearRect(0,0,WIDTH,HEIGHT);
can.font='40px "Tomes New Roman"';
can.fillStyle='red';
can.fillText('GAME OVER',140,220);
can.font='35px "Tomes New Roman"';
can.fillStyle='maroon';
can.fillText('YOUR SCORE IS : '+score,110,280);
$('.scoreBox').text('');
},1000);
gameOverStatus=true;
return;
}
}
}
updateSnakePosition=function(){
can.clearRect(0,0,WIDTH,HEIGHT);
if(changeSpeed!=speed){
clearInterval(intervalVar);
speed=changeSpeed;
intervalVar=setInterval(updateSnakePosition,speed);
}
while(eaten){
var x_pos1=Math.random()*485+5;
var y_pos1=Math.random()*485+5;
foodList[0]={
x:x_pos1,
y:y_pos1
};
eaten=false;
}
while(eatenBonus&&(eatenCount==6)){
eatenCount=0;
var x_pos2=Math.random()*485+5;
var y_pos2=Math.random()*485+5;
foodList[1]={
x:x_pos2,
y:y_pos2
};
eatenBonus=false;
}
drawFood(foodList[0],0);
if(!eatenBonus){
drawFood(foodList[1],1);
setTimeout(function(){
eatenBonus=true;
},3000);
}
snakeList.forEach(drawSnake);
if(testCollision(snakeList[0],foodList[0])){
// foodList=[];
eaten=true;
eatenCount++;
if(speed>=15)
changeSpeed=(speed-0.5);
score+=2;
var x_new,y_new;
if(direction==0){
x_new=snakeList[0].x-10;
y_new=snakeList[0].y;
}
else if(direction==1){
x_new=snakeList[0].x;
y_new=snakeList[0].y-10;
}
else if(direction==2){
x_new=snakeList[0].x+10;
y_new=snakeList[0].y;
}
else if(direction==3){
x_new=snakeList[0].x;
y_new=snakeList[0].y+10;
}
snakeList.unshift({x:x_new,y:y_new});
}
if(!eatenBonus){
if(testCollision(snakeList[0],foodList[1])){
eatenBonus=true;
if(speed>=15)
changeSpeed=(speed-1);
score+=5;
var x_new,y_new;
if(direction==0){
x_new=snakeList[0].x-15;
y_new=snakeList[0].y;
}
else if(direction==1){
x_new=snakeList[0].x;
y_new=snakeList[0].y-15;
}
else if(direction==2){
x_new=snakeList[0].x+15;
y_new=snakeList[0].y;
}
else if(direction==3){
x_new=snakeList[0].x;
y_new=snakeList[0].y+15;
}
snakeList.unshift({x:x_new,y:y_new});
}
}
$('#score').text(score);
isGameOver();
checkSnakePosition();
updateSnakeList();
//console.log(speed);
}
function startGame(){
snakeList=[
{x:220,y:200},
{x:210,y:200},
{x:200,y:200}
];
foodList=[];
direction=99;
eaten=true;
eatenBonus=true
score=0;
isRunning=true;
changeSpeed=speed;
intervalVar=setInterval(updateSnakePosition,speed--);
}
//startGame();
document.getElementById('can').onmousedown=function(event){
if(!isRunning){
startGame();
}
}
</script>
</body>
</html>