Multiantag Gamemode (#37783)

Co-authored-by: slarticodefast <161409025+slarticodefast@users.noreply.github.com>
Co-authored-by: Southbridge <7013162+southbridge-fur@users.noreply.github.com>
Co-authored-by: ScarKy0 <106310278+ScarKy0@users.noreply.github.com>

Content.Shared/GameTicking/Rules/DynamicRuleComponent.cs

@@ -0,0 +1,71 @@
+using Content.Shared.EntityTable.EntitySelectors;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom;
+
+namespace Content.Shared.GameTicking.Rules;
+
+/// <summary>
+/// Gamerule the spawns multiple antags at intervals based on a budget
+/// </summary>
+[RegisterComponent, AutoGenerateComponentPause]
+public sealed partial class DynamicRuleComponent : Component
+{
+    /// <summary>
+    /// The total budget for antags.
+    /// </summary>
+    [DataField]
+    public float Budget;
+
+    /// <summary>
+    /// The last time budget was updated.
+    /// </summary>
+    [DataField]
+    public TimeSpan LastBudgetUpdate;
+
+    /// <summary>
+    /// The amount of budget accumulated every second.
+    /// </summary>
+    [DataField]
+    public float BudgetPerSecond = 0.1f;
+
+    /// <summary>
+    /// The minimum or lower bound for budgets to start at.
+    /// </summary>
+    [DataField]
+    public int StartingBudgetMin = 200;
+
+    /// <summary>
+    /// The maximum or upper bound for budgets to start at.
+    /// </summary>
+    [DataField]
+    public int StartingBudgetMax = 350;
+
+    /// <summary>
+    /// The time at which the next rule will start
+    /// </summary>
+    [DataField(customTypeSerializer: typeof(TimeOffsetSerializer)), AutoPausedField]
+    public TimeSpan NextRuleTime;
+
+    /// <summary>
+    /// Minimum delay between rules
+    /// </summary>
+    [DataField]
+    public TimeSpan MinRuleInterval = TimeSpan.FromMinutes(10);
+
+    /// <summary>
+    /// Maximum delay between rules
+    /// </summary>
+    [DataField]
+    public TimeSpan MaxRuleInterval = TimeSpan.FromMinutes(30);
+
+    /// <summary>
+    /// A table of rules that are picked from.
+    /// </summary>
+    [DataField]
+    public EntityTableSelector Table = new NoneSelector();
+
+    /// <summary>
+    /// The rules that have been spawned
+    /// </summary>
+    [DataField]
+    public List<EntityUid> Rules = new();
+}