Salvage expeditions (#12745)

Content.Shared/Salvage/Expeditions/Modifiers/SalvageBiomeMod.cs

@@ -0,0 +1,31 @@
+using Content.Shared.Parallax.Biomes;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+
+namespace Content.Shared.Salvage.Expeditions.Modifiers;
+
+/// <summary>
+/// Affects the biome to be used for salvage.
+/// </summary>
+[Prototype("salvageBiomeMod")]
+public sealed class SalvageBiomeMod : IPrototype, ISalvageMod
+{
+    [IdDataField] public string ID { get; } = default!;
+
+    [DataField("desc")] public string Description { get; } = string.Empty;
+
+    /// <summary>
+    /// Cost for difficulty modifiers.
+    /// </summary>
+    [DataField("cost")]
+    public float Cost { get; } = 0f;
+
+    /// <summary>
+    /// Is weather allowed to apply to this biome.
+    /// </summary>
+    [DataField("weather")]
+    public bool Weather = true;
+
+    [DataField("biome", required: true, customTypeSerializer:typeof(PrototypeIdSerializer<BiomeTemplatePrototype>))]
+    public string? BiomePrototype;
+}