How To Make Changes To Base UE4 Classes?

Charles_Cox · April 23, 2021, 3:30pm

I want to change 2 functions in the Character.h and the CharacterMovement.cpp. They are:

Line 1717 in CharacterMovementComponent.cpp : FVector UCharacterMovementComponent::ConstrainAnimRootMotionVelocity
Line 361 in Character.h : FORCEINLINE class USkeletalMeshComponent* GetMesh()

Normally, I inherit from the base ue4 code and override the functions I want to, but Unfortunately, these two functions are not virtual so I cannot override them. How can I make changes to the base UE4 code? It seems to be separate from my project. Do I need to recompile the whole engine, or is there an existing solution I can modify?

Kehel18 · April 23, 2021, 4:10pm

Hello!

As for Line 1717 in CharacterMovementComponent.cpp it is rather difficult thing, this class have lots such things…
As for Line 361 in Character.h it is only getter… Do you want to replace Mesh to some of your own class? If yes and if your class inherits from USkeletalMeshComponent you can use component class injection Gamasutra: Artur Kh's Blog - UE4Cookery CPP001: Injecting subobjects with FObjectInitializer