{"id":248,"date":"2022-10-20T00:30:04","date_gmt":"2022-10-20T00:30:04","guid":{"rendered":"https:\/\/merserver.com\/?p=248"},"modified":"2022-10-20T00:30:04","modified_gmt":"2022-10-20T00:30:04","slug":"in-unreal-engine-4-how-do-i-get-the-components-game-object-via-c","status":"publish","type":"post","link":"http:\/\/merserver.com\/index.php\/2022\/10\/20\/in-unreal-engine-4-how-do-i-get-the-components-game-object-via-c\/","title":{"rendered":"In Unreal Engine 4, how do I get the component’s “game object” via C++?"},"content":{"rendered":"\n

1<\/p>\n\n\n\n

<\/a><\/p>\n\n\n\n

To do this in Unreal and C++, you’ll need to set a pointer to the class and then cast to it.<\/p>\n\n\n\n

Casting is expensive in terms of overhead so if it’s something you’ll be doing often, it’s best to get it sorted in Begin Play and call the variable in Tick or whenever you want to call it.<\/p>\n\n\n\n

In the .h file:<\/p>\n\n\n\n

class ACharacter;\n<\/code><\/pre>\n\n\n\n
In whatever section (public, private or protected) is best:<\/p>\n\n\n\n
ACharacter* ComponentOwner = nullptr;\n<\/code><\/pre>\n\n\n\n
Over in your .cpp<\/p>\n\n\n\n
#include \"ACharacter.h\"\n<\/code><\/pre>\n\n\n\n
Then in your Begin Play<\/p>\n\n\n\n
ComponentOwner = Cast<ACharacter>(GetOwner());\n<\/code><\/pre>\n\n\n\n
It is good practise to protect your pointers to avoid crashes. While getting the program working, I’d check here at Begin Play as well:<\/p>\n\n\n\n
if (!ComponentOwner)\n{    \n  UE_LOG(LogTemp, Warning, TEXT(\"No ComponentOwner found!\");\n}\n<\/code><\/pre>\n\n\n\n
and then in Tick or whatever function is calling the character:<\/p>\n\n\n\n
if (!ComponentOwner)\n{ return; }\n\n\/\/ Put your code here<\/code><\/pre>\n\n\n\n
OR<\/p>\n\n\n\n
Use\u00a0GetOwner()<\/code>\u00a0in the component<\/p>\n","protected":false},"excerpt":{"rendered":"
1 To do this in Unreal and C++, you’ll need to set a pointer to the class and then cast to it. Casting is expensive in terms of overhead so if it’s something you’ll be doing often, it’s best to get it sorted in Begin Play and call the variable in Tick or whenever you…<\/p>\n
Read More “In Unreal Engine 4, how do I get the component’s “game object” via C++?”<\/span> »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,3],"tags":[],"class_list":["post-248","post","type-post","status-publish","format-standard","hentry","category-gamedev","category-unreal-engine"],"_links":{"self":[{"href":"http:\/\/merserver.com\/index.php\/wp-json\/wp\/v2\/posts\/248","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/merserver.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/merserver.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/merserver.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/merserver.com\/index.php\/wp-json\/wp\/v2\/comments?post=248"}],"version-history":[{"count":1,"href":"http:\/\/merserver.com\/index.php\/wp-json\/wp\/v2\/posts\/248\/revisions"}],"predecessor-version":[{"id":249,"href":"http:\/\/merserver.com\/index.php\/wp-json\/wp\/v2\/posts\/248\/revisions\/249"}],"wp:attachment":[{"href":"http:\/\/merserver.com\/index.php\/wp-json\/wp\/v2\/media?parent=248"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/merserver.com\/index.php\/wp-json\/wp\/v2\/categories?post=248"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/merserver.com\/index.php\/wp-json\/wp\/v2\/tags?post=248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}