# Unreal Engine Docs Authors - Gameplay Classes (Highlights)
## Metadata
**Cover**:: https://readwise-assets.s3.amazonaws.com/static/images/article2.74d541386bbf.png
**Source**:: #from/readwise
**Zettel**:: #zettel/fleeting
**Status**:: #x
**Authors**:: [[Unreal Engine Docs Authors]]
**Full Title**:: Gameplay Classes
**Category**:: #articles #readwise/articles
**Category Icon**:: 📰
**URL**:: [docs.unrealengine.com](https://docs.unrealengine.com/4.27/en-US/ProgrammingAndScripting/GameplayArchitecture/Classes/)
**Host**:: [[docs.unrealengine.com]]
**Highlighted**:: [[2022-03-20]]
**Created**:: [[2022-09-26]]
## Highlights
- It is also possible to place the constructor inline in the class header file. However, if the constructor is in the class header file, the UClass must be declared with the CustomConstructor
specifier as this prevents the automatic code generator from creating a constructor declaration in the header.
- The FObjectInitializer parameter that is passed into the constructor, despite being marked as const, can be configured via built-in mutable functions to override properties and subobjects.
- Setting values for more complex data types, especially class references, names, and asset references, requires defining and instantiating a ConstructorStatics struct in the constructor to
hold the various property values needed.
#code
example:
```cpp
ATimelineTestActor::ATimelineTestActor()
{
// Structure to hold one-time initialization
struct FConstructorStatics
{
ConstructorHelpers::FObjectFinder<UStaticMesh> Object0;
FConstructorStatics()
: Object0(TEXT("StaticMesh'/Game/UT3/Pickups/Pickups/Health_Large/Mesh/S_Pickups_Base_Health_Large.S_Pickups_Base_Health_Large'"))
{
}
};
static FConstructorStatics ConstructorStatics;
// Property initialization
StaticMesh = ConstructorStatics.Object0.Object;
}
```