Introduction 👋

Welcome to my first development note. This is a series of posts about documenting tips/notes that I gathered during a personal project’s development.

For this week, I have some notes relate to the UActorComponent and UMaterialInstanceDynamic from Unreal Engine.

Note 📝

  • To set CastShadow value at runtime, use SetCastShadow() function from the UActorComponent class. This function will force the component to update in the next frame. Set variable directly will only work during construction.
  • To create a UMaterialInstanceDynamic use the static function UMaterialInstanceDynamic::Create(Material, UObject);
    • Parameter: Material -> the parent material that need to be converted to instance dynamic.
    • Parameter: UObject -> the world object in the game, use this keyword is sufficient.
  • To have UPROPERTY be placed in a specific spot in the detail panel, use DisplayPriority or DisplayAfter in meta specifier.
  • To initialize an empty array of given type and given size, use Array.Init({}, size);
    • {} also work for passing an empty parameter, not pointer.