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snake.html
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snake.html
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<!DOCTYPE html>
<html>
<head>
<title>Xap</title>
<meta charset="utf-8">
<meta name="viewport" content="user-scalable=no">
</head>
<body>
</body>
</html>
<canvas id="board" width="400" height="400"></canvas>
<div id="score"></div>
<div id="high"></div>
<div id="btns">
<div id="up" class="btn" onclick="moveup()">^</div>
<div id="left" class="btn" onclick="moveleft()"><</div>
<div id="down" class="btn" onclick="movedown()">v</div>
<div id="right" class="btn" onclick="moveright()">></div>
</div>
<script type="text/javascript">
var high = 0;
if(localStorage.getItem('high')){
high = parseInt(localStorage.high, 10);
}else{
localStorage.high = 0;
}
ratio = 1;
if(window.innerWidth<window.innerHeight){
ratio = window.innerWidth/300;
}
speed=10;
score=0;
window.onload = () => {
can = document.getElementById("board");
ctx = can.getContext("2d");
scoreCard = document.getElementById("score");
highCard = document.getElementById("high");
document.addEventListener("keydown", keyPress);
setInterval(game, 1000/speed);
}
px=py=10;
gs=tc=20;
ax=ay=15;
xv=yv=0;
trail=[];
tail=2;
function game(){
scoreCard.innerHTML = "Score: " + score;
highCard.innerHTML = "High Score: " + high;
px += xv;
py += yv;
if(px<0){
px=tc-1;
}
if(px>tc-1){
px=0;
}
if(py<0){
py=tc-1;
}
if(py>tc-1){
py=0;
}
ctx.fillStyle = "black";
ctx.fillRect(0,0,can.width,can.height);
ctx.fillStyle = "white";
for(var i=0; i<trail.length; i++){
ctx.fillRect(trail[i].x*gs+1, trail[i].y*gs+1, gs-1, gs-1);
if(trail[i].x==px && trail[i].y==py){
tail = 2;
score = 0;
}
}
trail.push({x:px, y:py});
while(trail.length>tail){
trail.shift();
}
if(ax==px && ay==py){
tail++;
score++;
if(score>high){
high = score;
localStorage.high = score;
}
ax=Math.floor(Math.random()*tc);
ay=Math.floor(Math.random()*tc);
}
ctx.fillStyle = "lime";
ctx.fillRect(ax*gs+1, ay*gs+1, gs-1, gs-1);
}
function keyPress(e){
switch(e.keyCode){
case 37:
if(xv!=1){
xv=-1; yv=0;
}
break;
case 65:
if(xv!=1){
xv=-1; yv=0;
}
break;
case 38:
if(yv!=1){
xv=0; yv=-1;
}
break;
case 87:
if(yv!=1){
xv=0; yv=-1;
}
break;
case 39:
if(xv!=-1){
xv=1; yv=0;
}
break;
case 68:
if(xv!=-1){
xv=1; yv=0;
}
break;
case 40:
if(yv!=-1){
xv=0; yv=1;
}
break;
case 83:
if(yv!=-1){
xv=0; yv=1;
}
break;
}
}
function moveup(){
if(yv!=1){
xv=0; yv=-1;
}
}
function movedown(){
if(yv!=-1){
xv=0; yv=1;
}
}
function moveright(){
if(xv!=-1){
xv=1; yv=0;
}
}
function moveleft(){
if(xv!=1){
xv=-1; yv=0;
}
}
</script>
<style type="text/css">
*{
box-sizing: border-box;
}
body, html{
margin: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
#board{
position: fixed;
left: 50%;
top: 7%;
transform: translateX(-50%);
}
#score{
position: fixed;
top: 10px;
right: 10px;
font-size: 2em;
font-weight: bolder;
font-family: monospace;
padding: 20px 30px;
color: white;
background-color: green;
}
#high{
position: fixed;
top: 10px;
left: 10px;
font-size: 2em;
font-weight: bolder;
font-family: monospace;
padding: 20px 30px;
color: white;
background-color: green;
}
.btn{
position: absolute;
width: 33%;
height: 50%;
background-color: yellow;
color: black;
border: 1px solid black;
font-family: sans-serif;
font-weight: bolder;
font-size: 2em;
cursor: pointer;
}
#btns{
width: 150px;
height: 100px;
position: fixed;
bottom: 7%;
left: 50%;
transform: translateX(-50%);
text-align: center;
line-height: 50px;
}
#up{
top: 0;
left: 33%;
border-bottom: none;
}
#left{
bottom: 0;
left: 0;
border-right: none;
}
#down{
left: 33%;
bottom: 0;
}
#right{
right: 0;
bottom: 0;
border-left: none;
}
</style>
<script type="text/javascript">
controls = document.getElementById("btns");
btns.style.width = (150*ratio)+"px";
btns.style.height = (100*ratio)+"px";
</script>