moths can eat goat wool (#21704)

* add Wooly system

* add RequireDead to Food

* minor fix+cleanup and fix repeating

* minor fix+cleanup and fix repeating

* make goat wooly

---------

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Server/Animals/Components/WoolyComponent.cs

@@ -0,0 +1,42 @@
+using Content.Server.Animals.Systems;
+using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom;
+
+/// <summary>
+/// Lets an animal grow a wool solution when not hungry.
+/// </summary>
+[RegisterComponent, Access(typeof(WoolySystem))]
+public sealed partial class WoolyComponent : Component
+{
+    /// <summary>
+    /// What reagent to grow.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public ProtoId<ReagentPrototype> ReagentId = "Fiber";
+
+    /// <summary>
+    /// How much wool to grow at every growth cycle.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public FixedPoint2 Quantity = 25;
+
+    /// <summary>
+    /// What solution to add the wool reagent to.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public string Solution = "wool";
+
+    /// <summary>
+    /// How long to wait before growing wool.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public TimeSpan GrowthDelay = TimeSpan.FromMinutes(1);
+
+    /// <summary>
+    /// When to next try growing wool.
+    /// </summary>
+    [DataField(customTypeSerializer: typeof(TimeOffsetSerializer)), ViewVariables(VVAccess.ReadWrite)]
+    public TimeSpan NextGrowth = TimeSpan.FromSeconds(0);
+}