Dynamic space world generation and debris. (#15120)

* World generation (squash)

* Test fixes.

* command

* o

* Access cleanup.

* Documentation touchups.

* Use a prototype serializer for BiomeSelectionComponent

* Struct enumerator in SimpleFloorPlanPopulatorSystem

* Safety margins around PoissonDiskSampler, cookie acquisition methodologies

* Struct enumerating PoissonDiskSampler; internal side

* Struct enumerating PoissonDiskSampler: Finish it

* Update WorldgenConfigSystem.cs

awa

---------

Co-authored-by: moonheart08 <moonheart08@users.noreply.github.com>
Co-authored-by: 20kdc <asdd2808@gmail.com>

Content.Server/Worldgen/Systems/NoiseIndexSystem.cs

@@ -0,0 +1,46 @@
+using Content.Server.Worldgen.Components;
+using Content.Server.Worldgen.Prototypes;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Random;
+
+namespace Content.Server.Worldgen.Systems;
+
+/// <summary>
+///     This handles the noise index.
+/// </summary>
+public sealed class NoiseIndexSystem : EntitySystem
+{
+    [Dependency] private readonly IPrototypeManager _prototype = default!;
+    [Dependency] private readonly IRobustRandom _random = default!;
+
+    /// <summary>
+    ///     Gets a particular noise channel from the index on the given entity.
+    /// </summary>
+    /// <param name="holder">The holder of the index</param>
+    /// <param name="protoId">The channel prototype ID</param>
+    /// <returns>An initialized noise generator</returns>
+    public NoiseGenerator Get(EntityUid holder, string protoId)
+    {
+        var idx = EnsureComp<NoiseIndexComponent>(holder);
+        if (idx.Generators.TryGetValue(protoId, out var generator))
+            return generator;
+        var proto = _prototype.Index<NoiseChannelPrototype>(protoId);
+        var gen = new NoiseGenerator(proto, _random.Next());
+        idx.Generators[protoId] = gen;
+        return gen;
+    }
+
+    /// <summary>
+    ///     Attempts to evaluate the given noise channel using the generator on the given entity.
+    /// </summary>
+    /// <param name="holder">The holder of the index</param>
+    /// <param name="protoId">The channel prototype ID</param>
+    /// <param name="coords">The coordinates to evaluate at</param>
+    /// <returns>The result of evaluation</returns>
+    public float Evaluate(EntityUid holder, string protoId, Vector2 coords)
+    {
+        var gen = Get(holder, protoId);
+        return gen.Evaluate(coords);
+    }
+}
+