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HTML5 - Beginners - localStorage map.html
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HTML5 - Beginners - localStorage map.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width" />
</head>
<body>
<div id="test"></div>
<canvas id="myCanvas" width="320" height="240" style="border:1px solid #d3d3d3;">
Use different browser.
</canvas>
<script>
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
// This would be our tile map or other data
map = [
[1,2,3],
[3,2,1],
[0,0,0]
];
// Store the map array into
// localStorage as JSON string.
localStorage.data = JSON.stringify(map);
map = [
[0,0,0],
[1,1,1],
[0,0,0]
];
// Read the string from localStorage
// and parse it back.
let a = JSON.parse(localStorage.data);
// Convert the read data back into the
// multi dimensional map array.
var cnt = 0;
for(y=0;y<3;y++){
// read the first array data
// into the new b array
var b = a[cnt].splice(",");
var cnt2=0;
for(x=0;x<3;x++){
// read the data from b
// into our map..
map[x][y] = b[cnt2];
cnt2++;
}
cnt++;
};
gameloop=setInterval(doGameLoop,16);
function doGameLoop(){
myCanvas.height = window.innerHeight-32;
myCanvas.width = window.innerWidth-32;
ctx.fillStyle="rgb(0,0,0)";
ctx.fillRect(0,0,c.width,c.height);
ctx.fillStyle="rgb(255,255,255)";
for(y=0;y<3;y++){
for(x=0;x<3;x++){
ctx.fillText(map[x][y],(x*32)+64,(y*32)+64);
}}
}
</script>
</body>
</html>