Simple Magic Spellbook System (#7823)

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

Content.Server/Magic/Events/WorldSpawnSpellEvent.cs

@@ -0,0 +1,29 @@
+using Content.Shared.Actions;
+using Content.Shared.Storage;
+
+namespace Content.Server.Magic.Events;
+
+public sealed class WorldSpawnSpellEvent : WorldTargetActionEvent
+{
+    // TODO:This class needs combining with InstantSpawnSpellEvent
+
+    /// <summary>
+    /// The list of prototypes this spell will spawn
+    /// </summary>
+    [DataField("prototypes")]
+    public List<EntitySpawnEntry> Contents = new();
+
+    // TODO: This offset is liable for deprecation.
+    /// <summary>
+    /// The offset the prototypes will spawn in on relative to the one prior.
+    /// Set to 0,0 to have them spawn on the same tile.
+    /// </summary>
+    [DataField("offset")]
+    public Vector2 Offset;
+
+    /// <summary>
+    /// Lifetime to set for the entities to self delete
+    /// </summary>
+    [DataField("lifetime")] public float? Lifetime;
+}
+