增加物理结算

tests/physics-constraints.test.js

@@ -0,0 +1,37 @@
+'use strict';
+
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const vm = require('node:vm');
+
+const viewer = fs.readFileSync('viewer/spine.html', 'utf8');
+const releaseViewer = fs.readFileSync('release/UNIVERSAL_SpineViewer/viewer/spine.html', 'utf8');
+const server = fs.readFileSync('SpineThumbnailGenerateServer/js/renderer.js', 'utf8');
+
+function functionSource(source, name) {
+	const start = source.indexOf(`function ${name}(`);
+	assert.ok(start >= 0, `missing ${name}`);
+	const open = source.indexOf('{', start);
+	let depth = 0;
+	for (let index = open; index < source.length; index++) {
+		if (source[index] === '{') depth++;
+		else if (source[index] === '}' && --depth === 0) return source.slice(start, index + 1);
+	}
+	throw new Error(`unterminated ${name}`);
+}
+
+const calls = [];
+const skeleton = {
+	update(delta) { calls.push(['time', delta]); },
+	updateWorldTransform(mode) { calls.push(['world', mode]); },
+};
+vm.runInNewContext(`const spine = { Physics: { update: 'update', reset: 'reset' } }; ${functionSource(viewer, 'updateWorld')}; updateWorld(skeleton, 0.05); updateWorld(skeleton, 0, true);`, { skeleton, calls });
+assert.deepEqual(calls, [['time', 0.05], ['world', 'update'], ['world', 'reset']]);
+
+assert.equal(viewer, releaseViewer, 'release viewer must mirror the source viewer');
+assert.match(viewer, /MAX_FRAME_DELTA = 0\.064[\s\S]*updateWorld\(skeleton, frameDelta\)/);
+assert.match(viewer, /time - previousTime[\s\S]*previousTime === undefined/);
+assert.match(server, /skeleton\.update\(delta\)[\s\S]*spine\.Physics\.reset/);
+assert.match(server, /time - previousTime[\s\S]*previousTime === undefined/);
+
+console.log('PASS: Spine 4.2+ physics advances time and resets between sampling passes');