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const h = preact.h;
const CELL_SIZE = 32;
const GRID_SIZE_X = 21;
const GRID_SIZE_Y = 21;
const FLOOR_COUNT = 15;
const ASSET_SVG_PROPS = {"width": CELL_SIZE, "height": CELL_SIZE,
"version": "1.1"};
const ASSET_WHITE_BG = h("rect", {"x": 0, "y": 0, "width": CELL_SIZE,
"height": CELL_SIZE, "fill": "white",
"stroke-width": 0 });
// Bytes is a Uint8Array
async function compressBytes(bytes)
{
let blob = new Blob([bytes]);
const ds = new CompressionStream("deflate");
const compressed = blob.stream().pipeThrough(ds);
let compressed_blob = await new Response(compressed).blob();
const reader = new FileReader();
return new Promise((resolve, _) => {
reader.onloadend = (event) => {
const result = event.target.result;
resolve(result.replace(/^data:.+;base64,/, '')
.replaceAll("/", "-").replaceAll("+", "_"));
}
reader.readAsDataURL(compressed_blob);
});
}
// Decompress into Uint8Array
function decompressBytes(s)
{
const decoded = window.atob(s.replaceAll("_", "+").replaceAll("-", "/"));
const decoded_array = Uint8Array.from(decoded, c => c.charCodeAt(0));
let blob = new Blob([decoded_array]);
const cs = new DecompressionStream("deflate");
const decompressed = blob.stream().pipeThrough(cs);
return new Response(decompressed).bytes();
}
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