Add EmpReactionEffect (#18248)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Server/Chemistry/ReactionEffects/EmpReactionEffect.cs

@@ -0,0 +1,49 @@
+using Content.Server.Emp;
+using Content.Shared.Chemistry.Reagent;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.Chemistry.ReactionEffects;
+
+
+[DataDefinition]
+public sealed class EmpReactionEffect : ReagentEffect
+{
+    /// <summary>
+    ///     Impulse range per unit of reagent
+    /// </summary>
+    [DataField("rangePerUnit")]
+    public float EmpRangePerUnit = 0.5f;
+
+    /// <summary>
+    ///     Maximum impulse range
+    /// </summary>
+    [DataField("maxRange")]
+    public float EmpMaxRange = 10;
+
+    /// <summary>
+    ///     How much energy will be drain from sources
+    /// </summary>
+    [DataField("energyConsumption")]
+    public float EnergyConsumption = 12500;
+
+    /// <summary>
+    ///     Amount of time entities will be disabled
+    /// </summary>
+    [DataField("duration")]
+    public float DisableDuration = 15;
+
+    protected override string? ReagentEffectGuidebookText(IPrototypeManager prototype, IEntitySystemManager entSys)
+            => Loc.GetString("reagent-effect-guidebook-emp-reaction-effect", ("chance", Probability));
+
+    public override void Effect(ReagentEffectArgs args)
+    {
+        var transform = args.EntityManager.GetComponent<TransformComponent>(args.SolutionEntity);
+        var range = MathF.Min((float) (args.Quantity*EmpRangePerUnit), EmpMaxRange);
+
+        args.EntityManager.System<EmpSystem>().EmpPulse(
+            transform.MapPosition,
+            range,
+            EnergyConsumption,
+            DisableDuration);
+    }
+}

Resources/Locale/en-US/guidebook/chemistry/effects.ftl

@@ -31,6 +31,12 @@ reagent-effect-guidebook-explosion-reaction-effect =
         *[other] cause
     } an explosion
 
+reagent-effect-guidebook-emp-reaction-effect =
+    { $chance ->
+        [1] Causes
+        *[other] cause
+    } an electromagnetic pulse
+
 reagent-effect-guidebook-foam-area-reaction-effect =
     { $chance ->
         [1] Creates

Resources/Prototypes/Recipes/Reactions/chemicals.yml

@@ -177,6 +177,24 @@
       sound:
         path: /Audio/Effects/extinguish.ogg
 
+- type: reaction
+  id: UraniumEmpExplosion
+  impact: High
+  priority: 20
+  reactants:
+    Iron:
+      amount: 1
+    Uranium:
+      amount: 1
+    Aluminium:
+      amount: 1
+  effects:
+    - !type:EmpReactionEffect
+      rangePerUnit: 0.2
+      maxRange: 6
+      energyConsumption: 12500
+      duration: 15
+
 - type: reaction
   id: TableSalt
   reactants: