Animals obey conservation of matter unless they are undead (#21922)

Content.Server/Animals/Components/UdderComponent.cs

@@ -1,9 +1,15 @@
 using Content.Server.Animals.Systems;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.FixedPoint;
-using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom;
+
 
 namespace Content.Server.Animals.Components
+
+/// <summary>
+///     Lets an entity produce milk. Uses hunger if present.
+/// </summary>
 {
     [RegisterComponent, Access(typeof(UdderSystem))]
     internal sealed partial class UdderComponent : Component
@@ -11,31 +17,37 @@ namespace Content.Server.Animals.Components
         /// <summary>
         ///     The reagent to produce.
         /// </summary>
-        [ViewVariables(VVAccess.ReadOnly)]
-        [DataField("reagentId", customTypeSerializer:typeof(PrototypeIdSerializer<ReagentPrototype>))]
-        public string ReagentId = "Milk";
+        [DataField, ViewVariables(VVAccess.ReadOnly)]
+        public ProtoId<ReagentPrototype> ReagentId = "Milk";
 
         /// <summary>
         ///     The solution to add reagent to.
         /// </summary>
-        [ViewVariables(VVAccess.ReadOnly)]
-        [DataField("targetSolution")]
-        public string TargetSolutionName = "udder";
+        [DataField, ViewVariables(VVAccess.ReadOnly)]
+        public string Solution = "udder";
 
         /// <summary>
         ///     The amount of reagent to be generated on update.
         /// </summary>
-        [ViewVariables(VVAccess.ReadOnly)]
-        [DataField("quantity")]
-        public FixedPoint2 QuantityPerUpdate = 1;
+        [DataField, ViewVariables(VVAccess.ReadOnly)]
+        public FixedPoint2 QuantityPerUpdate = 25;
 
         /// <summary>
-        ///     The time between updates (in seconds).
+        ///     The amount of nutrient consumed on update.
         /// </summary>
-        [ViewVariables(VVAccess.ReadOnly)]
-        [DataField("updateRate")]
-        public float UpdateRate = 5;
+        [DataField, ViewVariables(VVAccess.ReadWrite)]
+        public float HungerUsage = 10f;
 
-        public float AccumulatedFrameTime;
+        /// <summary>
+        ///     How long to wait before producing.
+        /// </summary>
+        [DataField, ViewVariables(VVAccess.ReadWrite)]
+        public TimeSpan GrowthDelay = TimeSpan.FromMinutes(1);
+
+        /// <summary>
+        ///     When to next try to produce.
+        /// </summary>
+        [DataField(customTypeSerializer: typeof(TimeOffsetSerializer)), ViewVariables(VVAccess.ReadWrite)]
+        public TimeSpan NextGrowth = TimeSpan.FromSeconds(0);
     }
 }