From 3ef40d5a06b830264b2d62571f19a80bf5169dfc Mon Sep 17 00:00:00 2001
From: Kevin Levron <kevin.levron@gmail.com>
Date: Thu, 1 Jul 2021 22:17:20 +0200
Subject: [PATCH] script setup fix (#74)

---
 src/core/Object3D.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/core/Object3D.ts b/src/core/Object3D.ts
index 290e2d9..a355f35 100644
--- a/src/core/Object3D.ts
+++ b/src/core/Object3D.ts
@@ -1,5 +1,5 @@
 import { Object3D, Scene } from 'three'
-import { ComponentPublicInstance, defineComponent, PropType, watch } from 'vue'
+import { ComponentPublicInstance, defineComponent, getCurrentInstance, PropType, watch } from 'vue'
 import { bindObjectProp, bindProp } from '../tools'
 import { RendererInjectionKey, RendererInterface } from './Renderer'
 import { SceneInjectionKey } from './Scene'
@@ -125,6 +125,13 @@ export default defineComponent({
     },
     getParent(): undefined | ComponentPublicInstance {
       let parent = this.$parent
+
+      if (!parent) {
+        // for script setup
+        const instance = getCurrentInstance() as any // ctx is internal
+        if (instance && instance.parent) parent = instance.parent.ctx
+      }
+
       while (parent) {
         if ((parent as any).add) return parent
         parent = parent.$parent