[Port] Uplink Discounts From White Dream

Content.Client/Store/Ui/StoreMenu.xaml.cs

@@ -147,6 +147,10 @@ private void AddListingGui(ListingData listing)
         }
 
         var newListing = new StoreListingControl(listing, GetListingPriceString(listing), hasBalance, texture);
+
+        if (listing.DiscountValue > 0)
+            newListing.StoreItemBuyButton.AddStyleClass("ButtonColorRed");
+
         newListing.StoreItemBuyButton.OnButtonDown += args
             => OnListingButtonPressed?.Invoke(args, listing);
 

Content.Server/Store/Systems/StoreSystem.Ui.cs

@@ -265,6 +265,12 @@ private void OnBuyRequest(EntityUid uid, StoreComponent component, StoreBuyListi
         listing.PurchaseAmount++; //track how many times something has been purchased
         _audio.PlayEntity(component.BuySuccessSound, msg.Session, uid); //cha-ching!
 
+        if (listing.SaleLimit != 0 && listing.DiscountValue > 0 && listing.PurchaseAmount >= listing.SaleLimit)
+        {
+            listing.DiscountValue = 0;
+            listing.Cost = listing.OldCost;
+        }
+
         UpdateUserInterface(buyer, uid, component);
     }
 

Content.Server/Store/Systems/StoreSystem.cs

@@ -10,6 +10,7 @@
 using Robust.Server.GameObjects;
 using Robust.Shared.Prototypes;
 using System.Linq;
+using Content.Server.StoreDiscount;
 using Robust.Shared.Utility;
 
 namespace Content.Server.Store.Systems;
@@ -22,6 +23,7 @@ public sealed partial class StoreSystem : EntitySystem
 {
     [Dependency] private readonly IPrototypeManager _proto = default!;
     [Dependency] private readonly SharedPopupSystem _popup = default!;
+    [Dependency] private readonly StoreDiscountSystem _storeDiscount = default!;
 
     public override void Initialize()
     {
@@ -199,6 +201,8 @@ public void InitializeFromPreset(StorePresetPrototype preset, EntityUid uid, Sto
         if (component.Balance == new Dictionary<string, FixedPoint2>() && preset.InitialBalance != null) //if we don't have a value stored, use the preset
             TryAddCurrency(preset.InitialBalance, uid, component);
 
+        _storeDiscount.ApplyDiscounts(component.Listings, preset);
+
         var ui = _ui.GetUiOrNull(uid, StoreUiKey.Key);
         if (ui != null)
         {
@@ -225,7 +229,7 @@ public CurrencyInsertAttemptEvent(EntityUid user, EntityUid target, EntityUid us
 
 
 /// <summary>
-/// Nyano/DeltaV Code. For penguin bombs and what not. 
+/// Nyano/DeltaV Code. For penguin bombs and what not.
 /// Raised on an item when it is purchased.
 /// An item may need to set it upself up for its purchaser.
 /// For example, to make sure it isn't hostile to them or

Content.Server/StoreDiscount/StoreDiscountSystem.cs

@@ -0,0 +1,53 @@
+using System.Linq;
+using Content.Shared.FixedPoint;
+using Content.Shared.Store;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Random;
+
+namespace Content.Server.StoreDiscount;
+
+public sealed class StoreDiscountSystem : EntitySystem
+{
+    [Dependency] private readonly IRobustRandom _random = default!;
+
+    public void ApplyDiscounts(IEnumerable<ListingData> listings, StorePresetPrototype store)
+    {
+        if (!store.Sales.Enabled)
+            return;
+
+        var count = _random.Next(store.Sales.MinItems, store.Sales.MaxItems + 1);
+
+        listings = listings
+            .Where(l => !l.SaleBlacklist && l.Cost.Any(x => x.Value > 1)
+                                         && store.Categories.Overlaps(ChangedFormatCategories(l.Categories)))
+            .OrderBy(_ => _random.Next()).Take(count).ToList();
+
+        foreach (var listing in listings)
+        {
+            var sale = GetDiscount(store.Sales.MinMultiplier, store.Sales.MaxMultiplier);
+            var newCost = listing.Cost.ToDictionary(x => x.Key,
+                x => FixedPoint2.New(Math.Max(1, (int) MathF.Round(x.Value.Float() * sale))));
+
+            if (listing.Cost.All(x => x.Value.Int() == newCost[x.Key].Int()))
+                continue;
+
+            var key = listing.Cost.First(x => x.Value > 0).Key;
+            listing.OldCost = listing.Cost;
+            listing.DiscountValue = 100 - (newCost[key] / listing.Cost[key] * 100).Int();
+            listing.Cost = newCost;
+            listing.Categories = new() {store.Sales.SalesCategory};
+        }
+    }
+
+    private IEnumerable<string> ChangedFormatCategories(List<ProtoId<StoreCategoryPrototype>> categories)
+    {
+        var modified = from p in categories select p.Id;
+
+        return modified;
+    }
+
+    private float GetDiscount(float minMultiplier, float maxMultiplier)
+    {
+        return _random.NextFloat() * (maxMultiplier - minMultiplier) + minMultiplier;
+    }
+}

Content.Shared/Store/ListingLocalisationHelpers.cs

@@ -18,6 +18,11 @@ public static string GetLocalisedNameOrEntityName(ListingData listingData, IProt
         else if (listingData.ProductEntity != null)
             name = prototypeManager.Index(listingData.ProductEntity.Value).Name;
 
+        if (listingData.DiscountValue > 0)
+            name += " " + Loc.GetString("store-sales-amount", ("amount", listingData.DiscountValue));
+        else if (listingData.OldCost.Count > 0)
+            name += " " + Loc.GetString("store-sales-over");
+
         return name;
     }
 

Content.Shared/Store/ListingPrototype.cs

@@ -109,6 +109,19 @@ public partial class ListingData : IEquatable<ListingData>, ICloneable
     [DataField]
     public TimeSpan RestockTime = TimeSpan.Zero;
 
+    [DataField]
+    public int SaleLimit = 3;
+
+    [DataField]
+    public bool SaleBlacklist;
+
+    public int DiscountValue;
+
+    public Dictionary<ProtoId<CurrencyPrototype>, FixedPoint2> OldCost = new();
+
+    [DataField]
+    public List<string> Components = new();
+
     public bool Equals(ListingData? listing)
     {
         if (listing == null)
@@ -166,6 +179,11 @@ public object Clone()
             ProductEvent = ProductEvent,
             PurchaseAmount = PurchaseAmount,
             RestockTime = RestockTime,
+            SaleLimit = SaleLimit,
+            SaleBlacklist = SaleBlacklist,
+            DiscountValue = DiscountValue,
+            OldCost = OldCost,
+            Components = Components,
         };
     }
 }

Content.Shared/Store/StorePresetPrototype.cs

@@ -1,3 +1,4 @@
+using Content.Shared.StoreDiscount;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.Set;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.Dictionary;
@@ -38,4 +39,7 @@ public sealed partial class StorePresetPrototype : IPrototype
     /// </summary>
     [DataField("currencyWhitelist", customTypeSerializer: typeof(PrototypeIdHashSetSerializer<CurrencyPrototype>))]
     public HashSet<string> CurrencyWhitelist { get; private set; } = new();
+
+    [DataField]
+    public SalesSpecifier Sales { get; private set; } = new();
 }

Content.Shared/StoreDiscount/SalesSpecifier.cs

@@ -0,0 +1,38 @@
+namespace Content.Shared.StoreDiscount;
+
+[DataDefinition]
+public sealed partial class SalesSpecifier
+{
+    [DataField]
+    public bool Enabled { get; private set; }
+
+    [DataField]
+    public float MinMultiplier { get; private set; }
+
+    [DataField]
+    public float MaxMultiplier { get; private set; }
+
+    [DataField]
+    public int MinItems { get; private set;  }
+
+    [DataField]
+    public int MaxItems { get; private set; }
+
+    [DataField]
+    public string SalesCategory { get; private set; } = string.Empty;
+
+    public SalesSpecifier()
+    {
+    }
+
+    public SalesSpecifier(bool enabled, float minMultiplier, float maxMultiplier, int minItems, int maxItems,
+        string salesCategory)
+    {
+        Enabled = enabled;
+        MinMultiplier = minMultiplier;
+        MaxMultiplier = maxMultiplier;
+        MinItems = minItems;
+        MaxItems = maxItems;
+        SalesCategory = salesCategory;
+    }
+}

Resources/Locale/en-US/_white/store/sales.ftl

@@ -0,0 +1,2 @@
+store-sales-amount = [DISCOUNT] { $amount }%!
+store-sales-over = [The sale is over]

Resources/Locale/ru-RU/_white/store/sales.ftl

@@ -0,0 +1,2 @@
+store-sales-amount = [СКИДКА] { $amount }%!
+store-sales-over = [Скидка закончилась]