Refactor: ProximityDetectionSystem (#35133)

* Refactor: ProximityDetectionSystem

* Update

* Update

* Update

* Yikes

* Update

* Dirty

* Update

* Update

* Lil cleanup

* Update

* Update

Content.Shared/ProximityDetection/ProximityDetectionEvents.cs

@@ -1,17 +1,27 @@
-using Content.Shared.FixedPoint;
-using Content.Shared.ProximityDetection.Components;
-using Robust.Shared.Serialization;
+using Content.Shared.ProximityDetection.Components;
 
 namespace Content.Shared.ProximityDetection;
 
+/// <summary>
+/// Raised to determine if proximity sensor can detect an entity.
+/// </summary>
 [ByRefEvent]
-public record struct ProximityDetectionAttemptEvent(bool Cancel, FixedPoint2 Distance, Entity<ProximityDetectorComponent> Detector);
+public struct ProximityDetectionAttemptEvent(float distance, Entity<ProximityDetectorComponent> detector, EntityUid target)
+{
+    public bool Cancelled;
+    public readonly float Distance = distance;
+    public readonly Entity<ProximityDetectorComponent> Detector = detector;
+    public readonly EntityUid Target = target;
+}
 
+/// <summary>
+/// Raised when distance from proximity sensor to the target was updated.
+/// </summary>
 [ByRefEvent]
-public record struct ProximityTargetUpdatedEvent(ProximityDetectorComponent Detector, EntityUid? Target, FixedPoint2 Distance);
+public readonly record struct ProximityTargetUpdatedEvent(float Distance, Entity<ProximityDetectorComponent> Detector, EntityUid? Target = null);
 
+/// <summary>
+/// Raised when proximity sensor got new target.
+/// </summary>
 [ByRefEvent]
-public record struct NewProximityTargetEvent(ProximityDetectorComponent Detector, EntityUid? Target);
-
-
-
+public readonly record struct NewProximityTargetEvent(float Distance, Entity<ProximityDetectorComponent> Detector, EntityUid? Target = null);