Adds T-ray Scanners (#5420)

Content.Shared/SubFloor/TrayScannerComponent.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameStates;
+using Robust.Shared.Maths;
+using Robust.Shared.Serialization;
+using Robust.Shared.Serialization.Manager.Attributes;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Shared.SubFloor;
+
+[RegisterComponent]
+[NetworkedComponent]
+public class TrayScannerComponent : Component
+{
+    public override string Name { get; } = "TrayScanner";
+
+    [ViewVariables]
+    public bool Toggled { get; set; }
+
+    // this should always be rounded
+    [ViewVariables]
+    public Vector2 LastLocation { get; set; }
+
+    // range of the scanner itself
+    [DataField("range")]
+    public float Range { get; set; } = 0.5f;
+
+    // exclude entities that are not the set
+    // of entities in range & entities already revealed
+    [ViewVariables]
+    public HashSet<EntityUid> RevealedSubfloors = new();
+}
+
+[Serializable, NetSerializable]
+public sealed class TrayScannerState : ComponentState
+{
+    public bool Toggled { get; }
+
+    public TrayScannerState(bool toggle)
+    {
+        Toggled = toggle;
+    }
+}