Unmanaged components

Unmanaged components store the most common data types which means they're useful in the majority of use-cases.

Unmanaged components can store fields of the following types:

  • Blittable types
  • bool
  • char
  • BlobAssetReference<T> (a reference to a Blob data structure)
  • Collections.FixedString (a fixed-sized character buffer)
  • Collections.FixedList
  • Fixed array (only allowed in an unsafe context)
  • Other structs that conform to these same restrictions

Create an unmanaged component

To create an unmanaged component, create a struct that inherits from IComponentData.

The following code sample shows an unmanaged component:

public struct ExampleUnmanagedComponent : IComponentData
{
    public int Value;
}

Add properties that use compatible types to the struct to define data for the component. If you don't add any properties to the component, it acts as a tag component.

Additional resources