GameRuleOnTrigger (#39845)

* Gaming

* commit

---------

Co-authored-by: iaada <iaada@users.noreply.github.com>

Content.Shared/Trigger/Components/Effects/AddGameRuleOnTriggerComponent.cs

@@ -0,0 +1,26 @@
+using Content.Shared.GameTicking.Components;
+using Robust.Shared.GameStates;
+using Robust.Shared.Prototypes;
+
+namespace Content.Shared.Trigger.Components.Effects;
+
+/// <summary>
+/// Adds and starts a new game rule on a trigger.
+/// The user is always logged alongside the game rule and this entity.
+/// </summary>
+[RegisterComponent, NetworkedComponent, AutoGenerateComponentState]
+public sealed partial class AddGameRuleOnTriggerComponent : BaseXOnTriggerComponent
+{
+    /// <summary>
+    /// The game rule that will be added. Entity requires <see cref="GameRuleComponent"/>.
+    /// </summary>
+    [DataField(required: true), AutoNetworkedField]
+    public EntProtoId<GameRuleComponent> GameRule;
+
+    /// <summary>
+    /// Whether to also start the game rule when adding it.
+    /// You almost always want this to be true.
+    /// </summary>
+    [DataField, AutoNetworkedField]
+    public bool StartRule = true;
+}