implemented 'duplicate' as 'copy' alias

diff --git a/lib/SDL/Game/Rect.pm b/lib/SDL/Game/Rect.pm
index 15fe1c9..92e0948 100644 (file)
--- a/lib/SDL/Game/Rect.pm
+++ b/lib/SDL/Game/Rect.pm
@@ -210,7 +210,9 @@ sub midbottom {
 ## methods                   ##
 ###############################
 
-sub duplicate {
+{
+    no strict 'refs';
+    *{'duplicate'} = *{copy};
 }
 
 sub copy {