Custom Types

Overview

Custom types for Networked Properties and RPC are supported. Custom types must be structs and implement the INetworkStruct interface.

C#

public struct CustomStruct : INetworkStruct
{
    public int IntField;
}

Supported Field Types

INetworkStruct only supports limited types:

• Primitives: byte, short, int, long, ushort, uint, ulong, float, double
• Unity Types: Vector2, Vector3, Vector4, Quaternion, Vector2Int, Vector3Int, Rect, RectInt Color, Color32
• Fusion Types: NetworkString<>, NetworkBool, Angle, NetworkId, PlayerRef, SceneRef, TickTimer
• Structs implementing INetworkStruct

Bools and Strings

Use NetworkBool and NetworkString<T> instead. You can get/set them with regular bool / string values like this:

C#

using Fusion;
using UnityEngine;

public class NetworkStructSampleCode : NetworkBehaviour
{
    public struct CustomStruct : INetworkStruct
    {
        public NetworkString<_16> Name;
        public NetworkBool Bool;
    }

    public CustomStruct MyStruct { get; set; }

    public void SetStringAndBool(string name, bool bool)
    {
        MyStruct.Name = name;
        MyStruct.Bool = bool;
    }
}

INetworkStruct Nesting

Since structs which implement INetworkStruct are allowed as fields, they can be used as fields inside other INetworkStruct definitions.

C#

using Fusion;
using UnityEngine;

public class NetworkStructSampleCode : NetworkBehaviour
{
  public struct InnerStruct : INetworkStruct
  {
    public int IntField;
  }

  public struct OuterStruct: INetworkStruct
  {
    public InnerStruct Inner;
  }

  [Networked]
  public OuterStruct Outer { get; set; }
}

OnChanged with Nested INetworkStructs

The OnChanged callback for nested INetworkStructs detects changes in any change the the entire struct, and individual values cannot be monitored for changes. If you need a callback for individual fields/properties, keep that variable in the NetworkBehaviour as its own Networked Property.