fix: use new model format

src/core/blitzkrieg/jsxTree.tsx

@@ -0,0 +1,29 @@
+import { MeshProps } from '@react-three/fiber';
+import { Mesh, Object3D } from 'three';
+
+export function jsxTree(node: Object3D, mesh?: MeshProps) {
+  if (node instanceof Mesh) {
+    return (
+      <mesh
+        geometry={node.geometry}
+        material={node.material}
+        position={node.position}
+        rotation={node.rotation}
+        scale={node.scale}
+        {...mesh}
+      />
+    );
+  } else if (node instanceof Object3D) {
+    return (
+      <group
+        position={node.position}
+        rotation={node.rotation}
+        scale={node.scale}
+      >
+        {node.children.map((child) => jsxTree(child, mesh))}
+      </group>
+    );
+  }
+
+  return null;
+}