105 lines
3.0 KiB
JavaScript
105 lines
3.0 KiB
JavaScript
async function loadScript(scenario, svg, script) {
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return new Promise((resolve, reject) => {
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const scriptEl = document.createElementNS("http://www.w3.org/2000/svg", 'script');
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scriptEl.onload = () => {
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console.log(`${script}.js loaded`);
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resolve();
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};
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scriptEl.onerror = () => {
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reject(Error('Script failed to load.'));
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};
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const dataset = scenario.querySelector('script')?.dataset || {};
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if ('cols' in dataset && 'rows' in dataset) {
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scriptEl.dataset.rows = dataset.rows;
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scriptEl.dataset.cols = dataset.cols;
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}
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scriptEl.setAttributeNS(null, 'href', `../../${script}.js`);
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svg.append(scriptEl);
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});
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}
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export async function requestResource(url) {
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return new Promise((resolve, reject) => {
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const request = new XMLHttpRequest();
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request.open('GET', url, true);
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request.responseType = 'document';
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request.onload = function() {
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if (request.status === 200) {
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resolve(request.response);
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} else {
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reject(Error('Image didn\'t load successfully; error code:' + request.statusText));
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}
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};
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request.onerror = function() {
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reject(Error('There was a network error.'));
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};
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request.send();
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});
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}
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export async function build(svg, request) {
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const defs = svg.querySelector('defs');
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const gb = svg.querySelector('.gameboard');
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const grid = svg.querySelector('.grid');
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const scenario = await request;
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const startLocs = scenario.querySelector('.start-locations');
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const externalResourceEls = Array.from(scenario.querySelectorAll('use[href*=".svg"'));
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const refs = externalResourceEls.reduce((acc, el) => {
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const href = el.getAttributeNS(null, 'href');
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const [filename] = href.match(/.+\.svg/);
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const fragmentIdentifier = href.split('.svg').pop();
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(acc[filename] ??= new Set()).add(fragmentIdentifier);
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el.setAttributeNS(null, 'href', fragmentIdentifier);
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return acc;
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}, {});
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await Promise.all(
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Object.keys(refs).map(filename => requestResource(`assets/images/${filename}`))
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).then(result => {
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Object.keys(refs).forEach((filename, index) => {
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const external = result[index];
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refs[filename].forEach(fragmentIdentifier => {
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external
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.querySelectorAll(`${fragmentIdentifier} use`)
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.forEach(el => refs[filename].add(el.getAttributeNS(null, 'href')));
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});
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const refsQuery = [...refs[filename]].join(', ');
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external.querySelectorAll(refsQuery).forEach(node =>
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defs.append(svg.ownerDocument.importNode(node, true))
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);
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});
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});
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scenario.querySelectorAll('use.mapsheet').forEach(el =>
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gb.querySelector('#background').after(svg.ownerDocument.importNode(el, true))
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);
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if (startLocs) grid.before(svg.ownerDocument.importNode(startLocs, true));
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const scenarioGrid = scenario.querySelector('.grid');
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if (scenarioGrid) {
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grid.replaceWith(svg.ownerDocument.importNode(scenarioGrid, true));
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}
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defs.replaceWith(scenario.querySelector('defs'));
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await loadScript(scenario, svg, 'radial')
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return loadScript(scenario, svg, 'map');
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}
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