Function normalizeTMX

packages/melonjs/src/level/tiled/TMXUtils.js:261–418

* Normalizer callback for xmlToObject — converts TMX XML into Tiled JSON format. * @ignore

(obj, item, parse)

 * @ignore
 */
function normalizeTMX(obj, item, parse) {
	const nodeName = item.nodeName;

	switch (nodeName) {
		case "data": {
			const data = parse(item);
			const encoding = data.encoding || "xml";
			const compression = data.compression;

			// infinite maps: decode each chunk
			if (data.chunks !== undefined) {
				const srcChunks = data.chunks;
				const chunks = obj.chunks || (obj.chunks = []);
				for (let i = 0, len = srcChunks.length; i < len; i++) {
					const c = srcChunks[i];
					chunks.push({
						x: +c.x,
						y: +c.y,
						width: +c.width,
						height: +c.height,
						data: decode(c.text, encoding, compression),
					});
				}
				obj.encoding = "none";
			}

			// finite maps (guard: data.text can exist alongside chunks)
			if (data.text !== undefined && obj.chunks === undefined) {
				obj.data = decode(data.text, encoding, compression);
				obj.encoding = "none";
			}
			break;
		}

		case "chunk": {
			const chunks = obj.chunks || (obj.chunks = []);
			chunks.push(parse(item));
			break;
		}

		case "imagelayer":
		case "layer":
		case "objectgroup":
		case "group": {
			const layer = parse(item);
			layer.type = nodeName === "layer" ? "tilelayer" : nodeName;
			if (layer.image) {
				// flattenImage equivalent for image layers
				if (layer.image.source) {
					layer.image = layer.image.source;
				} else if (layer.image.data) {
					const format = layer.image.format || "png";
					const base64 = layer.image.data.text || layer.image.data;
					layer.image = cacheEmbeddedImage(
						base64,
						format,
						layer.image.width ? +layer.image.width : undefined,
						layer.image.height ? +layer.image.height : undefined,