39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
/* @flow */
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// this script moves chunks of a canvas, i.e. to center it after changing size
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import redis from 'redis';
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import bluebird from 'bluebird';
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bluebird.promisifyAll(redis.RedisClient.prototype);
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bluebird.promisifyAll(redis.Multi.prototype);
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//ATTENTION Make suer to set the rdis URLs right!!!
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const url = "redis://localhost:6379";
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const redisc = redis.createClient(url, { return_buffers: true });
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const CANVAS_SIZE = 4096;
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const TILE_SIZE = 256;
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const offset = (16384 - 4096) / 2 / 256;
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const CHUNKS_XY = CANVAS_SIZE / TILE_SIZE;
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async function move() {
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for (let x = CHUNKS_XY - 1; x >= 0; x--) {
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for (let y = CHUNKS_XY - 1; y >= 0; y--) {
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const key = `ch:1:${x}:${y}`;
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const chunk = await redisc.getAsync(key);
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if (chunk) {
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const buffer = new Uint8Array(chunk);
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const newKey = `ch:1:${x + offset}:${y + offset}`
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await redisc.setAsync(newKey, Buffer.from(buffer.buffer));
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await redisc.delAsync(key);
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console.log('Moved Chunk ', key, ' to ', newKey);
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}
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}
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}
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console.log("done");
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}
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move();
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