Follow mouse rotation in combat mode (#20433)

Content.Shared/MouseRotator/MouseRotatorComponent.cs

@@ -14,22 +14,31 @@ public sealed partial class MouseRotatorComponent : Component
     /// <summary>
     ///     How much the desired angle needs to change before a predictive event is sent
     /// </summary>
-    [DataField]
-    [ViewVariables(VVAccess.ReadWrite)]
-    public Angle AngleTolerance = Angle.FromDegrees(5.0);
+    [DataField, AutoNetworkedField]
+    public Angle AngleTolerance = Angle.FromDegrees(20.0);
 
     /// <summary>
     ///     The angle that will be lerped to
     /// </summary>
-    [AutoNetworkedField, DataField]
+    [DataField, AutoNetworkedField]
     public Angle? GoalRotation;
 
     /// <summary>
     ///     Max degrees the entity can rotate per second
     /// </summary>
-    [DataField]
-    [ViewVariables(VVAccess.ReadWrite)]
+    [DataField, AutoNetworkedField]
     public double RotationSpeed = float.MaxValue;
+
+    /// <summary>
+    ///     This one is important. If this is true, <see cref="AngleTolerance"/> does not apply, and the system will
+    ///     use <see cref="RequestMouseRotatorRotationSimpleEvent"/> instead. In this mode, the client will only send
+    ///     events when an entity should snap to a different cardinal direction, rather than for every angle change.
+    ///
+    ///     This is useful for cases like humans, where what really matters is the visual sprite direction, as opposed to something
+    ///     like turrets or ship guns, which have finer range of movement.
+    /// </summary>
+    [DataField, AutoNetworkedField]
+    public bool Simple4DirMode = true;
 }
 
 /// <summary>
@@ -41,3 +50,13 @@ public sealed class RequestMouseRotatorRotationEvent : EntityEventArgs
 {
     public Angle Rotation;
 }
+
+/// <summary>
+///     Simpler version of <see cref="RequestMouseRotatorRotationEvent"/> for implementations
+///     that only require snapping to 4-dir and not full angle rotation.
+/// </summary>
+[Serializable, NetSerializable]
+public sealed class RequestMouseRotatorRotationSimpleEvent : EntityEventArgs
+{
+    public Direction Direction;
+}