Unity SDK

using System.Threading.Tasks;
using Flock;
using Flock.Exceptions;
using Flock.Models;
using UnityEngine;

public class FlockFirstCall : MonoBehaviour
{
    private async void Start()
    {
        try
        {
            // A saved sign-in is restored as the SDK starts: wait for it, then sign in only when nobody is signed in.
            while (FlockClient.IsRestoringSession)
                await Task.Yield();
            if (!FlockClient.Instance.IsAuthenticated)
                await SignInWithThisDeviceAsync();

            GameSchema game = await FlockClient.Instance.Game.GetGameAsync();
            Debug.Log($"Signed in as {FlockClient.Instance.CurrentPlayerId}, playing {game.Name}");
        }
        catch (FlockException failed)
        {
            Debug.LogError(failed.Message);   // What is wrong, then a Fix: line.
        }
    }

    // A device logs in once registered; the first launch on a device registers it.
    private static async Task SignInWithThisDeviceAsync()
    {
        // With no id, both calls use the device id the SDK keeps for this install.
        try
        {
            await FlockClient.Instance.Authentication.LoginWithDeviceAsync();
        }
        catch (FlockException notRegistered) when (notRegistered.ErrorCode == FlockErrorCode.PlayerInvalidLoginCredentials)
        {
            // Registering creates the player and signs them in: no login follows.
            await FlockClient.Instance.Authentication.RegisterWithDeviceAsync();
        }
    }
}

using Flock;
using UnityEngine;

// Raised for a login, a register that signed the player in, or a sign-in restored at startup.
FlockEvents.OnAuthenticated += (FlockAuthInfo info) => Debug.Log($"{info.PlayerId} signed in ({info.Method})");
// The saved sign-in can no longer be renewed: show your sign-in screen.
FlockEvents.OnAuthExpired += () => Debug.Log("Sign in again");

using Flock;
using Flock.Generated.Configs;
using Flock.Generated.Shops;
using Flock.Generated.Templates;
using Flock.Models;
using UnityEngine;

// Player data — typed accessor generated from your "PlayerProgress" template. Null until the player has a record.
PlayerProgressTemplate progress = await FlockClient.Instance.Player.GetPlayerProgressAsync();
if (progress != null)
{
    progress.Level = 5;
    await progress.UpdateAsync();
}

// Remote config — change values on the dashboard without rebuilding.
GameplayConfig gameplay = await FlockClient.Instance.Config.GetGameplayAsync();
float spawnRate = gameplay.SpawnRate;

// Shop — enum-keyed purchase; the SDK resolves ids for you.
PurchaseResult bought = await FlockClient.Instance.Shop.PurchaseAsync(FlockShopItemId.GemPack);

using Flock;
using Flock.Exceptions;
using UnityEngine;

try
{
    await FlockClient.Instance.Authentication.LoginWithDeviceAsync();
}
catch (FlockException ex)
{
    Debug.LogError(ex.Message);
}

using Flock;
using Flock.Exceptions;
using Flock.Generated.Shops;

try
{
    await FlockClient.Instance.Shop.PurchaseAsync(FlockShopItemId.Sword);
}
catch (FlockException ex) when (ex.ErrorCode == FlockErrorCode.ShopInsufficientFunds)
{
    ShowNotEnoughCoinsDialog();   // Your own UI.
}