As on Unreal Engine 5, TObjectPtr is the new way for classes to hold raw pointers.
Pre UE5 you did<\/p>\n\n\n
\nUPROPERTY(EditAnywhere)\nUMyObject* MyObject;\n<\/pre><\/div>\n\n\nNow with UE5 you should do:<\/p>\n\n\n
\nUPROPERTY(EditAnywhere)\nTObjectPtr<UMyObject> MyObject;\n<\/pre><\/div>\n\n\nTo enforce these, i highly recommend placing the following in your Target.cs file for your project (we normally just do it in the MyGameEditor.Target.cs
<\/p>\n\n\n
\n\t\tif (!bBuildAllModules)\n\t\t{\n\t\t\tNativePointerMemberBehaviorOverride = PointerMemberBehavior.Disallow;\n\t\t}\n<\/pre><\/div>\n\n\nThis will enforce the use of TObjectPtr!<\/p>\n\n\n\n
But there are some issues you can encounter using these. As these should ONLY be for class members, not function parameters, you may run into some issues. But fear not, Epic gave us some templates for these:<\/p>\n\n\n\n
ObjectPtrDecay<\/h4>\n\n\n\nWhenever const access to the underlying storage of a TObjectPtr<...> (or a container of them) we should use this. Example is here:<\/pre>\n\n\n\nUPROPERTY(Transient)\nTArray<TObjectPtr<AActor>> Actors;\n\nvoid MyFunc()\n{\n TArray<AActor*> SelectedActors = ObjectPtrDecay(Actors);\n}\n\nAnother example is:\n\nUPROPERTY(Transient)\nTArray<TObjectPtr<UObject>> Objects;\n\nvoid MainFunc()\n{\n SomeFunc(ObjectPtrDecay(Objects);\n}\n\nvoid SomeFunc(TArray<UObject*> InObjects)\n{\n}\n<\/pre><\/div>\n\n\nObjectPtrWrap<\/h4>\n\n\n\n
This is the inverse of the above, basically makes a TArray<UObject*> to a TArray<TObjectPtr<UObject>><\/p>\n\n\n\n
MutableView<\/h4>\n\n\n\nMutableView: safely obtain temporary mutable access to a TObjectPtr's
underlying storage.
This allows you to pass a mutable view to the TObjectPtrs to functions, etc that requires it.
<\/pre>\n\n\n\nvoid GetAllComponents(TArray<UActorComponent*>& Components)\n{\n Components.Add(Blah);\n}\nTArray<TObjectPtr<UActorComponent>> Components;\nGetAllComponents(MutableView(Components));\n<\/pre><\/div>\n\n\nHopefully this helps, just a small random bit of information!<\/p>\n","protected":false},"excerpt":{"rendered":"
As on Unreal Engine 5, TObjectPtr is the new way for classes to hold raw pointers.Pre UE5 you did Now with UE5 you should do: To enforce these, i highly recommend placing the following in your Target.cs file for your project (we normally just do it in the MyGameEditor.Target.cs This will enforce the use of … Enforce TObjectPtr! (And how to avoid pitfalls)<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-279","post","type-post","status-publish","format-standard","hentry","category-random-bits"],"rise-blocks_total_comments":0,"rise-blocks_categories":[{"term_id":20,"name":"Random Bits","slug":"random-bits","term_group":0,"term_taxonomy_id":20,"taxonomy":"category","description":"Random bits of useful stuff.","parent":0,"count":2,"filter":"raw","cat_ID":20,"category_count":2,"category_description":"Random bits of useful stuff.","cat_name":"Random Bits","category_nicename":"random-bits","category_parent":0}],"rise-blocks_excerpt":"As on Unreal Engine 5, TObjectPtr is the new way for classes to hold raw pointers.Pre UE5 you did Now with UE5 you should do: To enforce these, i highly recommend placing the following in your Target.cs file for your project (we normally just do it in the MyGameEditor.Target.cs This will enforce the use of TObjectPtr! But there are some..","_links":{"self":[{"href":"https:\/\/www.thegames.dev\/index.php?rest_route=\/wp\/v2\/posts\/279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.thegames.dev\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thegames.dev\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thegames.dev\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thegames.dev\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=279"}],"version-history":[{"count":10,"href":"https:\/\/www.thegames.dev\/index.php?rest_route=\/wp\/v2\/posts\/279\/revisions"}],"predecessor-version":[{"id":289,"href":"https:\/\/www.thegames.dev\/index.php?rest_route=\/wp\/v2\/posts\/279\/revisions\/289"}],"wp:attachment":[{"href":"https:\/\/www.thegames.dev\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thegames.dev\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thegames.dev\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}