增加涡流修改器

scripts/verify-vortex.mjs

@@ -0,0 +1,27 @@
+import { build } from 'esbuild'
+
+const bundled = await build({
+  bundle: true,
+  stdin: {
+    contents: "export { fieldFalloff, vortexAcceleration } from './src/core/particleMath.ts'",
+    resolveDir: process.cwd(),
+    sourcefile: 'vortex-test-entry.ts',
+  },
+  format: 'esm',
+  platform: 'node',
+  write: false,
+})
+const source = bundled.outputFiles[0].text
+const api = await import(`data:text/javascript;base64,${Buffer.from(source).toString('base64')}`)
+
+if (api.fieldFalloff('constant', 50, 100) !== 1) throw new Error('恒定衰减计算错误')
+if (api.fieldFalloff('linear', 50, 100) !== 0.5) throw new Error('线性衰减计算错误')
+if (api.fieldFalloff('inverse', 5, 100) !== 10) throw new Error('距离反比衰减计算错误')
+if (api.fieldFalloff('constant', 101, 100) !== 0) throw new Error('漩涡范围外不应有力')
+
+const counterclockwise = api.vortexAcceleration(10, 0, 0, 0, 2, 100, 'constant')
+if (counterclockwise.x !== 0 || counterclockwise.y !== 20) throw new Error('正强度应产生逆时针切向力')
+const clockwise = api.vortexAcceleration(10, 0, 0, 0, -2, 100, 'constant')
+if (clockwise.x !== 0 || clockwise.y !== -20) throw new Error('负强度应产生顺时针切向力')
+
+console.log('漩涡力方向、半径与三种衰减模式校验通过')