Create a shared component

You can create both managed and unmanaged shared components.

Create an unmanaged shared component

To create an unmanaged shared component, create a struct that implements the marker interface ISharedComponentData.

The following code sample shows an unmanaged shared component:

public struct ExampleUnmanagedSharedComponent : ISharedComponentData
{
    public int Value;
}

Create a managed shared component

To create a managed shared component, create a struct that implements the marker interface ISharedComponentData and IEquatable<>, and ensure public override int GetHashCode() is implemented. The equality methods are necessary to ensure comparisons do not generate managed allocations unnecessarily due to implict boxing when using the default Equals and GetHashCode implementations.

The following code sample shows a managed shared component:

public struct ExampleManagedSharedComponent : ISharedComponentData, IEquatable<ExampleManagedSharedComponent>
{
    public string Value; // A managed field type

    public bool Equals(ExampleManagedSharedComponent other)
    {
        return Value.Equals(other.Value);
    }

    public override int GetHashCode()
    {
        return Value.GetHashCode();
    }
}