Revert biome rework (#38724)

* Revert "Fix world generation (#38713)"

This reverts commit 10fa6ff4af.

* Revert "Biome rework (#37735)"

This reverts commit fe7b96147c.

Content.Shared/Parallax/Biomes/BiomeComponent.cs

@@ -0,0 +1,87 @@
+using Content.Shared.Parallax.Biomes.Layers;
+using Content.Shared.Parallax.Biomes.Markers;
+using Robust.Shared.GameStates;
+using Robust.Shared.Noise;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.Dictionary;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.List;
+
+namespace Content.Shared.Parallax.Biomes;
+
+[RegisterComponent, NetworkedComponent, AutoGenerateComponentState(true), Access(typeof(SharedBiomeSystem))]
+public sealed partial class BiomeComponent : Component
+{
+    /// <summary>
+    /// Do we load / deload.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite), Access(Other = AccessPermissions.ReadWriteExecute)]
+    public bool Enabled = true;
+
+    [ViewVariables(VVAccess.ReadWrite), DataField("seed")]
+    [AutoNetworkedField]
+    public int Seed = -1;
+
+    /// <summary>
+    /// The underlying entity, decal, and tile layers for the biome.
+    /// </summary>
+    [DataField("layers")]
+    [AutoNetworkedField]
+    public List<IBiomeLayer> Layers = new();
+
+    /// <summary>
+    /// Templates to use for <see cref="Layers"/>.
+    /// If this is set on mapinit, it will fill out layers automatically.
+    /// If not set, use <c>BiomeSystem</c> to do it.
+    /// Prototype reloading will also use this.
+    /// </summary>
+    [DataField]
+    public ProtoId<BiomeTemplatePrototype>? Template;
+
+    /// <summary>
+    /// If we've already generated a tile and couldn't deload it then we won't ever reload it in future.
+    /// Stored by [Chunkorigin, Tiles]
+    /// </summary>
+    [DataField("modifiedTiles")]
+    public Dictionary<Vector2i, HashSet<Vector2i>> ModifiedTiles = new();
+
+    /// <summary>
+    /// Decals that have been loaded as a part of this biome.
+    /// </summary>
+    [DataField("decals")]
+    public Dictionary<Vector2i, Dictionary<uint, Vector2i>> LoadedDecals = new();
+
+    [DataField("entities")]
+    public Dictionary<Vector2i, Dictionary<EntityUid, Vector2i>> LoadedEntities = new();
+
+    /// <summary>
+    /// Currently active chunks
+    /// </summary>
+    [DataField("loadedChunks")]
+    public HashSet<Vector2i> LoadedChunks = new();
+
+    #region Markers
+
+    /// <summary>
+    /// Work out entire marker tiles in advance but only load the entities when in range.
+    /// </summary>
+    [DataField("pendingMarkers")]
+    public Dictionary<Vector2i, Dictionary<string, List<Vector2i>>> PendingMarkers = new();
+
+    /// <summary>
+    /// Track what markers we've loaded already to avoid double-loading.
+    /// </summary>
+    [DataField("loadedMarkers", customTypeSerializer:typeof(PrototypeIdDictionarySerializer<HashSet<Vector2i>, BiomeMarkerLayerPrototype>))]
+    public Dictionary<string, HashSet<Vector2i>> LoadedMarkers = new();
+
+    [DataField]
+    public HashSet<ProtoId<BiomeMarkerLayerPrototype>> MarkerLayers = new();
+
+    /// <summary>
+    /// One-tick forcing of marker layers to bulldoze any entities in the way.
+    /// </summary>
+    [DataField]
+    public HashSet<ProtoId<BiomeMarkerLayerPrototype>> ForcedMarkerLayers = new();
+
+    #endregion
+}