spine资源引入

src/core/particleEmitter.ts

@@ -23,6 +23,8 @@ export interface SceneCollider {
   x: number
   y: number
   rotation: number
+  scaleX: number
+  scaleY: number
   radius: number
   radiusX: number
   radiusY: number
@@ -1590,15 +1592,27 @@ type ColliderHit = { x: number; y: number; nx: number; ny: number }
 function resolveColliderPoint(collider: SceneCollider, worldX: number, worldY: number): ColliderHit | null {
   const angle = collider.rotation * Math.PI / 180
   const cos = Math.cos(angle), sin = Math.sin(angle)
+  const scaleX = Math.max(0.0001, Math.abs(collider.scaleX ?? 1))
+  const scaleY = Math.max(0.0001, Math.abs(collider.scaleY ?? 1))
   const dx = worldX - collider.x, dy = worldY - collider.y
-  const localX = cos * dx + sin * dy
-  const localY = -sin * dx + cos * dy
-  const toWorld = (x: number, y: number, nx: number, ny: number): ColliderHit => ({
-    x: collider.x + cos * x - sin * y + (cos * nx - sin * ny) * 0.05,
-    y: collider.y + sin * x + cos * y + (sin * nx + cos * ny) * 0.05,
-    nx: cos * nx - sin * ny,
-    ny: sin * nx + cos * ny,
-  })
+  const localX = (cos * dx + sin * dy) / scaleX
+  const localY = (-sin * dx + cos * dy) / scaleY
+  const toWorld = (x: number, y: number, nx: number, ny: number): ColliderHit => {
+    // 非等比缩放下，法线使用逆转置缩放后再旋转，保证反弹方向正确。
+    const scaledNormalX = nx / scaleX
+    const scaledNormalY = ny / scaleY
+    const normalLength = Math.max(0.0001, Math.hypot(scaledNormalX, scaledNormalY))
+    const localNormalX = scaledNormalX / normalLength
+    const localNormalY = scaledNormalY / normalLength
+    const worldNormalX = cos * localNormalX - sin * localNormalY
+    const worldNormalY = sin * localNormalX + cos * localNormalY
+    return {
+      x: collider.x + cos * x * scaleX - sin * y * scaleY + worldNormalX * 0.05,
+      y: collider.y + sin * x * scaleX + cos * y * scaleY + worldNormalY * 0.05,
+      nx: worldNormalX,
+      ny: worldNormalY,
+    }
+  }
   if (collider.shape === 'circle') {
     const radius = Math.max(0.001, collider.radius)
     const distance = Math.hypot(localX, localY)