trimill.xyz/flaskr/templates/projects/mazemaker/bool-x-64.js

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2022-06-23 05:58:54 +00:00
function compressMaze(maze) {
if(maze == undefined) return undefined;
if(maze.length == 0) return [0, 0];
var a = [];
var x, y, i;
for(x = 0; x < maze.length; x++) {
for(y = 0; y < maze[x].length; y++) {
a.push(maze[x][y][0]);
a.push(maze[x][y][1]);
a.push(maze[x][y][2]);
a.push(maze[x][y][3]);
}
}
return a;
}
function expandMaze(maze, w, h) {
if(maze == undefined) return undefined;
if(w == 0 || h == 0) return [];
var a = [];
for(x = 0; x < w; x++) {
a.push([]);
for(y = 0; y < h; y++) {
a[x][y] = [];
var index = 4*(y + x*h)
a[x][y].push(maze[index+0]);
a[x][y].push(maze[index+1]);
a[x][y].push(maze[index+2]);
a[x][y].push(maze[index+3]);
}
}
return a;
}
var b64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_';
function arrToB64(arr) {
while(arr.length%6 != 0) {
arr.push(false);
}
var str = '';
while(arr.length > 0) {
var n = arr.shift()*32+arr.shift()*16+arr.shift()*8+arr.shift()*4+arr.shift()*2+arr.shift();
str += b64[n];
}
return str;
}
function b64ToArr(str64) {
var arr = [];
for(var i = 0; i < str64.length; i++) {
var index = b64.indexOf(str64[i]);
if(index<0) continue;
arr.push((index>>5)%2 != 0);
arr.push((index>>4)%2 != 0);
arr.push((index>>3)%2 != 0);
arr.push((index>>2)%2 != 0);
arr.push((index>>1)%2 != 0);
arr.push((index>>0)%2 != 0);
}
return arr;
}
function encode(maze) {
return arrToB64(compressMaze(maze));
}
function decode(code, w, h) {
return expandMaze(b64ToArr(code), w, h);
}