baseline: OpenMU upstream b5a0961 (fresh source)

src/GameLogic/Offline/ZenConsumptionHandler.cs

@@ -0,0 +1,61 @@
+// <copyright file="ZenConsumptionHandler.cs" company="MUnique">
+// Licensed under the MIT License. See LICENSE file in the project root for full license information.
+// </copyright>
+
+namespace MUnique.OpenMU.GameLogic.Offline;
+
+using MUnique.OpenMU.GameLogic.MuHelper;
+using MUnique.OpenMU.GameLogic.Views.MuHelper;
+
+/// <summary>
+/// Handles the periodic Zen consumption for the offline player.
+/// </summary>
+internal sealed class ZenConsumptionHandler
+{
+    private readonly OfflinePlayer _player;
+    private readonly MuHelperConfiguration _configuration;
+    private DateTime _lastPayTimestamp;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ZenConsumptionHandler"/> class.
+    /// </summary>
+    /// <param name="player">The player.</param>
+    public ZenConsumptionHandler(OfflinePlayer player)
+    {
+        this._player = player;
+        this._configuration = player.GameContext.FeaturePlugIns.GetPlugIn<MuHelperFeaturePlugIn>()?.Configuration
+                              ?? new MuHelperConfiguration();
+        this._lastPayTimestamp = player.StartTimestamp;
+    }
+
+    /// <summary>
+    /// Deducts Zen from the player based on the server configuration and the player's level.
+    /// </summary>
+    /// <returns><c>true</c> if the player can continue; <c>false</c> if insufficient Zen.</returns>
+    public async ValueTask<bool> DeductZenAsync()
+    {
+        if (DateTime.UtcNow - this._lastPayTimestamp < this._configuration.PayInterval)
+        {
+            return true;
+        }
+
+        var amount = MuHelperZenCostCalculator.Calculate(this._player, this._configuration, this._player.StartTimestamp);
+
+        if (amount > 0 && this._player.TryRemoveMoney(amount))
+        {
+            this._lastPayTimestamp = DateTime.UtcNow;
+            await this._player
+                .InvokeViewPlugInAsync<IMuHelperStatusUpdatePlugIn>(p => p.ConsumeMoneyAsync((uint)amount))
+                .ConfigureAwait(false);
+            return true;
+        }
+
+        if (amount > 0)
+        {
+            this._player.Logger.LogDebug("Insufficient Zen for {CharacterName}.", this._player.Name);
+            return false;
+        }
+
+        return true;
+    }
+}