Simple Magic Spellbook System (#7823)

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

Content.Server/Explosion/Components/TriggerOnTimedCollideComponent.cs

@@ -0,0 +1,18 @@
+namespace Content.Server.Explosion.Components;
+
+/// <summary>
+/// Triggers when the entity is overlapped for the specified duration.
+/// </summary>
+[RegisterComponent]
+public sealed class TriggerOnTimedCollideComponent : Component
+{
+    [ViewVariables(VVAccess.ReadWrite)]
+    [DataField("threshold")]
+    public float Threshold;
+
+    /// <summary>
+    /// A collection of entities that are colliding with this, and their own unique accumulator.
+    /// </summary>
+    [ViewVariables]
+    public readonly Dictionary<EntityUid, float> Colliding = new();
+}