Overhauled stamina slowdown behavior (#36336)

Content.Shared/Damage/Components/StaminaComponent.cs

@@ -1,4 +1,5 @@
 using Content.Shared.Alert;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameStates;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom;
@@ -56,4 +57,22 @@ public sealed partial class StaminaComponent : Component
 
     [DataField]
     public ProtoId<AlertPrototype> StaminaAlert = "Stamina";
+
+    /// <summary>
+    /// This flag indicates whether the value of <see cref="StaminaDamage"/> decreases after the entity exits stamina crit.
+    /// </summary>
+    [DataField, AutoNetworkedField]
+    public bool AfterCritical;
+
+    /// <summary>
+    /// This float determines how fast stamina will regenerate after exiting the stamina crit.
+    /// </summary>
+    [DataField, AutoNetworkedField]
+    public float AfterCritDecayMultiplier = 5f;
+
+    /// <summary>
+    /// Thresholds that determine an entity's slowdown as a function of stamina damage.
+    /// </summary>
+    [DataField]
+    public Dictionary<FixedPoint2, float> StunModifierThresholds = new() { {0, 1f }, { 60, 0.7f }, { 80, 0.5f } };
 }