Kick mines (real) (#8056)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/StepTrigger/StepTriggerComponent.cs

@@ -0,0 +1,62 @@
+using Robust.Shared.GameStates;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.StepTrigger;
+
+[RegisterComponent]
+[NetworkedComponent]
+[Friend(typeof(StepTriggerSystem))]
+public sealed class StepTriggerComponent : Component
+{
+    /// <summary>
+    ///     List of entities that are currently colliding with the entity.
+    /// </summary>
+    public readonly HashSet<EntityUid> Colliding = new();
+
+    /// <summary>
+    ///     The list of entities that are standing on this entity,
+    /// which shouldn't be able to trigger it again until stepping off.
+    /// </summary>
+    public readonly HashSet<EntityUid> CurrentlySteppedOn = new();
+
+    /// <summary>
+    ///     Whether or not this component will currently try to trigger for entities.
+    /// </summary>
+    [DataField("active")]
+    public bool Active { get; set; } = true;
+
+    /// <summary>
+    ///     Ratio of shape intersection for a trigger to occur.
+    /// </summary>
+    [DataField("intersectRatio")]
+    public float IntersectRatio { get; set; } = 0.3f;
+
+    /// <summary>
+    ///     Entities will only be triggered if their speed exceeds this limit.
+    /// </summary>
+    [DataField("requiredTriggeredSpeed")]
+    public float RequiredTriggerSpeed { get; set; } = 3.5f;
+}
+
+[RegisterComponent]
+[Friend(typeof(StepTriggerSystem))]
+public sealed class StepTriggerActiveComponent : Component
+{
+
+}
+
+[Serializable, NetSerializable]
+public sealed class StepTriggerComponentState : ComponentState
+{
+    public float IntersectRatio { get; }
+    public float RequiredTriggerSpeed { get; }
+    public readonly EntityUid[] CurrentlySteppedOn;
+
+    public StepTriggerComponentState(float intersectRatio, EntityUid[] currentlySteppedOn, float requiredTriggerSpeed)
+    {
+        IntersectRatio = intersectRatio;
+        CurrentlySteppedOn = currentlySteppedOn;
+        RequiredTriggerSpeed = requiredTriggerSpeed;
+    }
+}
+