From 6200e19de180f9c340b3b60147087623c8821637 Mon Sep 17 00:00:00 2001
From: Catalin Mititiuc
Date: Wed, 12 Jun 2024 16:27:33 -0700
Subject: Extract scenario-build function into separate module
---
src/modules/scenario.js | 102 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 102 insertions(+)
create mode 100644 src/modules/scenario.js
(limited to 'src/modules')
diff --git a/src/modules/scenario.js b/src/modules/scenario.js
new file mode 100644
index 0000000..2483bc2
--- /dev/null
+++ b/src/modules/scenario.js
@@ -0,0 +1,102 @@
+async function loadScript(scenario, svg) {
+ return new Promise((resolve, reject) => {
+ const scriptEl = document.createElementNS("http://www.w3.org/2000/svg", 'script');
+
+ scriptEl.onload = () => {
+ console.log('map.js loaded');
+ resolve();
+ };
+
+ scriptEl.onerror = () => {
+ reject(Error('Script failed to load.'));
+ };
+
+ const dataset = scenario.querySelector('script').dataset;
+
+ if ('cols' in dataset && 'rows' in dataset) {
+ scriptEl.dataset.rows = dataset.rows;
+ scriptEl.dataset.cols = dataset.cols;
+ }
+
+ scriptEl.setAttributeNS(null, 'href', '../../map.js');
+ svg.append(scriptEl);
+ });
+}
+
+export async function requestResource(url) {
+ return new Promise((resolve, reject) => {
+ const request = new XMLHttpRequest();
+ request.open('GET', url, true);
+ request.responseType = 'document';
+
+ request.onload = function() {
+ if (request.status === 200) {
+ resolve(request.response);
+ } else {
+ reject(Error('Image didn\'t load successfully; error code:' + request.statusText));
+ }
+ };
+
+ request.onerror = function() {
+ reject(Error('There was a network error.'));
+ };
+
+ request.send();
+ });
+}
+
+export async function build(svg, request) {
+ const gb = svg.querySelector('.gameboard');
+ const grid = svg.querySelector('.grid');
+
+ const scenario = await request;
+ const startLocs = scenario.querySelector('.start-locations');
+ const externalResourceEls = Array.from(scenario.querySelectorAll('use[href*=".svg"'));
+
+ const refs = externalResourceEls.reduce((acc, el) => {
+ const href = el.getAttributeNS(null, 'href');
+ const [filename] = href.match(/.+\.svg/);
+ const fragmentIdentifier = href.split('.svg').pop();
+
+ (acc[filename] ??= new Set()).add(fragmentIdentifier);
+ el.setAttributeNS(null, 'href', fragmentIdentifier);
+
+ return acc;
+ }, {});
+
+ await Promise.all(
+ Object.keys(refs).map(filename => requestResource(`assets/images/${filename}`))
+ ).then(result => {
+ const defs = svg.querySelector('defs');
+
+ Object.keys(refs).forEach((filename, index) => {
+ const external = result[index];
+
+ refs[filename].forEach(fragmentIdentifier => {
+ external
+ .querySelectorAll(`${fragmentIdentifier} use`)
+ .forEach(el => refs[filename].add(el.getAttributeNS(null, 'href')));
+ });
+
+ const refsQuery = [...refs[filename]].join(', ');
+
+ external.querySelectorAll(refsQuery).forEach(node =>
+ defs.append(svg.ownerDocument.importNode(node, true))
+ );
+ });
+ });
+
+ scenario.querySelectorAll('use.mapsheet').forEach(el =>
+ gb.querySelector('#background').after(svg.ownerDocument.importNode(el, true))
+ );
+
+ if (startLocs) grid.before(svg.ownerDocument.importNode(startLocs, true));
+
+ const scenarioGrid = scenario.querySelector('.grid');
+
+ if (scenarioGrid) {
+ grid.replaceWith(svg.ownerDocument.importNode(scenarioGrid, true));
+ }
+
+ return loadScript(scenario, svg);
+}
--
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