[Client]

The '[Client]' attribute designates that the method can only be executed on the client.

Key Features

• Executes only on the client.
• A warning occurs if called from the server.
• Can be used in both Unity's game loop methods (such as Start, Update, etc.) and regular methods.
• When used in overridden methods, the attribute must also be specified in the overridden method.

Use Examples

Basic Use

public class PlayerController : NetworkBehaviour
{
    [Client]
    void Update()
    {
        // Logic that runs only on the client
        // Example: Player input handling
        if (Input.GetKeyDown(KeyCode.Space))
        {
            Jump();
        }
    }

    [Client]
    private void Jump()
    {
        // Jump logic
        // Actual movement is requested on the server via Command
    }
}

Using in Inherited Methods

public abstract class BasePlayer : NetworkBehaviour
{
    [Client]
    protected virtual void HandleInput() 
    {
        // Basic input handling logic
    }
}

public class SpecificPlayer : BasePlayer
{
    [Client]
    protected override void HandleInput()
    {
        base.HandleInput();
        // Additional input handling logic
    }
}

Using with State Checks

public class PlayerUI : NetworkBehaviour
{
    [Client]
    private void UpdateUI()
    {
        // Client check
        if (!isClient) 
        {
            Debug.LogWarning("UI updates can only be done on the client");
            return;
        }

        // UI update logic
        UpdateHealthBar();
        UpdateAmmoDisplay();
    }

    private void UpdateHealthBar() 
    {
        // Health bar update logic
    }

    private void UpdateAmmoDisplay() 
    {
        // Ammo display update logic
    }
}

note

1. Methods with the [Client] attribute should contain logic that needs to be executed only on the client.
2. Any actual game state changes should be requested on the server via [Command].
3. Typical use cases include UI updates, input handling, visual/sound effects, etc. :::