150 lines
4.2 KiB
JavaScript
150 lines
4.2 KiB
JavaScript
import { OnlineUsers } from "rkgk/online-users.js";
|
|
|
|
export class Chunk {
|
|
constructor(chunkAllocator) {
|
|
this.id = chunkAllocator.alloc();
|
|
}
|
|
|
|
destroy(chunkAllocator) {
|
|
chunkAllocator.dealloc(this.id);
|
|
}
|
|
|
|
upload(chunkAllocator, source) {
|
|
chunkAllocator.upload(this.id, source);
|
|
}
|
|
|
|
download(chunkAllocator) {
|
|
return chunkAllocator.download(this.id);
|
|
}
|
|
}
|
|
|
|
let layerIdCounter = 0;
|
|
|
|
export class Layer {
|
|
chunks = new Map();
|
|
id = layerIdCounter++;
|
|
|
|
constructor({ name, chunkSize, chunkLimit }) {
|
|
this.name = name;
|
|
this.chunkSize = chunkSize;
|
|
this.chunkLimit = chunkLimit;
|
|
|
|
console.info("created layer", this.id, this.name);
|
|
}
|
|
|
|
destroy(chunkAllocator) {
|
|
for (let { chunk } of this.chunks.values()) {
|
|
chunk.destroy(chunkAllocator);
|
|
}
|
|
}
|
|
|
|
getChunk(x, y) {
|
|
return this.chunks.get(chunkKey(x, y))?.chunk;
|
|
}
|
|
|
|
getOrCreateChunk(chunkAllocator, x, y) {
|
|
let key = chunkKey(x, y);
|
|
if (this.chunks.has(key)) {
|
|
return this.chunks.get(key)?.chunk;
|
|
} else {
|
|
if (this.chunkLimit != null && this.chunks.size >= this.chunkLimit) return null;
|
|
|
|
let chunk = new Chunk(chunkAllocator);
|
|
this.chunks.set(key, { x, y, chunk });
|
|
return chunk;
|
|
}
|
|
}
|
|
|
|
composite(chunkAllocator, src, op) {
|
|
for (let { x, y, chunk: srcChunk } of src.chunks.values()) {
|
|
let dstChunk = this.getOrCreateChunk(chunkAllocator, x, y);
|
|
if (dstChunk == null) continue;
|
|
|
|
chunkAllocator.composite(dstChunk.id, srcChunk.id, op);
|
|
}
|
|
}
|
|
|
|
async toEdits(chunkAllocator) {
|
|
console.time("toEdits");
|
|
|
|
let edits = [];
|
|
let encodeTime = 0;
|
|
for (let { x, y, chunk } of this.chunks.values()) {
|
|
edits.push({
|
|
chunk: { x, y },
|
|
data: chunk.download(chunkAllocator).then(async (downloaded) => {
|
|
let start = performance.now();
|
|
|
|
let imageBitmap = await createImageBitmap(
|
|
new ImageData(
|
|
new Uint8ClampedArray(downloaded.data),
|
|
downloaded.width,
|
|
downloaded.height,
|
|
),
|
|
);
|
|
chunkAllocator.freeDownloaded(downloaded.data);
|
|
let canvas = new OffscreenCanvas(downloaded.width, downloaded.height);
|
|
let ctx = canvas.getContext("bitmaprenderer");
|
|
ctx.transferFromImageBitmap(imageBitmap);
|
|
let blob = canvas.convertToBlob({ type: "image/png" });
|
|
|
|
let end = performance.now();
|
|
console.log("encoding image took", end - start, "ms");
|
|
encodeTime += end - start;
|
|
|
|
return blob;
|
|
}),
|
|
});
|
|
}
|
|
|
|
for (let edit of edits) {
|
|
edit.data = await edit.data;
|
|
}
|
|
|
|
console.timeEnd("toEdits");
|
|
|
|
return edits;
|
|
}
|
|
}
|
|
|
|
export function chunkKey(x, y) {
|
|
return `${x},${y}`;
|
|
}
|
|
|
|
export class Wall {
|
|
layers = []; // do not modify directly; only read
|
|
#layersById = new Map();
|
|
|
|
constructor(wallInfo) {
|
|
this.chunkSize = wallInfo.chunkSize;
|
|
this.paintArea = wallInfo.paintArea;
|
|
this.maxEditSize = wallInfo.maxEditSize;
|
|
this.onlineUsers = new OnlineUsers(wallInfo);
|
|
|
|
this.mainLayer = new Layer({ name: "main", chunkSize: this.chunkSize });
|
|
this.addLayer(this.mainLayer);
|
|
}
|
|
|
|
addLayer(layer) {
|
|
if (!this.#layersById.get(layer.id)) {
|
|
this.layers.push(layer);
|
|
this.#layersById.set(layer.id, layer);
|
|
} else {
|
|
console.warn("attempt to add layer more than once", layer);
|
|
}
|
|
return layer;
|
|
}
|
|
|
|
removeLayer(layer) {
|
|
if (this.#layersById.delete(layer.id)) {
|
|
let index = this.layers.findIndex((x) => x == layer);
|
|
this.layers.splice(index, 1);
|
|
} else {
|
|
console.warn("attempt to remove layer more than once", layer);
|
|
}
|
|
}
|
|
|
|
getLayerById(id) {
|
|
return this.#layersById.get(id);
|
|
}
|
|
}
|