From 40b96a150f25db34f5b213374fae0e74d02f0cc6 Mon Sep 17 00:00:00 2001
From: Keuin <keuinx@gmail.com>
Date: Thu, 21 Apr 2022 15:46:28 +0800
Subject: Copy and move semantic of hitlist.

---
 hitlist.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'hitlist.h')

diff --git a/hitlist.h b/hitlist.h
index 76832db..c804b4e 100644
--- a/hitlist.h
+++ b/hitlist.h
@@ -30,7 +30,15 @@ class hitlist {
 public:
     hitlist() = default;
 
-    hitlist(hitlist &other) = delete; // do not copy the world
+    hitlist(hitlist &other) {
+        objects = other.objects;
+    }
+
+    hitlist(hitlist &&other) noexcept {
+        objects = std::move(other.objects);
+    }
+
+    hitlist &operator=(const hitlist &other) = default;
 
     // Add an object to the world.
     void add_object(std::shared_ptr<object> &&obj) {
-- 
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