scale reagent damage when under metabolism rate (#11578)

Content.Server/Body/Systems/MetabolizerSystem.cs

@@ -172,7 +172,7 @@ namespace Content.Server.Body.Systems
 
                     var actualEntity = bodyEntityUid != null ? bodyEntityUid.Value : solutionEntityUid.Value;
                     var args = new ReagentEffectArgs(actualEntity, (meta).Owner, solution, proto, mostToRemove,
-                        EntityManager, null);
+                        EntityManager, null, entry);
 
                     // do all effects, if conditions apply
                     foreach (var effect in entry.Effects)

Content.Server/Chemistry/ReagentEffects/HealthChange.cs

@@ -34,6 +34,8 @@ namespace Content.Server.Chemistry.ReagentEffects
         public override void Effect(ReagentEffectArgs args)
         {
             var scale = ScaleByQuantity ? args.Quantity : FixedPoint2.New(1);
+            if (args.MetabolismEffects != null)
+                scale *= (args.Quantity / args.MetabolismEffects.MetabolismRate);
             EntitySystem.Get<DamageableSystem>().TryChangeDamage(args.SolutionEntity, Damage * scale, IgnoreResistances);
         }
     }

Content.Shared/Chemistry/Reaction/SharedChemicalReactionSystem.cs

@@ -192,7 +192,7 @@ namespace Content.Shared.Chemistry.Reaction
         {
             var args = new ReagentEffectArgs(owner, null, solution,
                 randomReagent,
-                unitReactions, EntityManager, null);
+                unitReactions, EntityManager, null, null);
 
             foreach (var effect in reaction.Effects)
             {

Content.Shared/Chemistry/ReactiveSystem.cs

@@ -47,7 +47,7 @@ namespace Content.Shared.Chemistry
 
             // If we have a source solution, use the reagent quantity we have left. Otherwise, use the reaction volume specified.
             var args = new ReagentEffectArgs(uid, null, source, reagent,
-                source?.GetReagentQuantity(reagent.ID) ?? reactVolume, EntityManager, method);
+                source?.GetReagentQuantity(reagent.ID) ?? reactVolume, EntityManager, method, null);
 
             // First, check if the reagent wants to apply any effects.
             if (reagent.ReactiveEffects != null && reactive.ReactiveGroups != null)

Content.Shared/Chemistry/Reagent/ReagentEffect.cs

@@ -82,6 +82,7 @@ namespace Content.Shared.Chemistry.Reagent
         ReagentPrototype Reagent,
         FixedPoint2 Quantity,
         IEntityManager EntityManager,
-        ReactionMethod? Method
+        ReactionMethod? Method,
+        ReagentEffectsEntry? MetabolismEffects
     );
 }

Content.Shared/Chemistry/Reagent/ReagentPrototype.cs

@@ -130,7 +130,7 @@ namespace Content.Shared.Chemistry.Reagent
 
             var entMan = IoCManager.Resolve<IEntityManager>();
             var random = IoCManager.Resolve<IRobustRandom>();
-            var args = new ReagentEffectArgs(plantHolder.Value, null, solution, this, amount.Quantity, entMan, null);
+            var args = new ReagentEffectArgs(plantHolder.Value, null, solution, this, amount.Quantity, entMan, null, null);
             foreach (var plantMetabolizable in PlantMetabolisms)
             {
                 if (!plantMetabolizable.ShouldApply(args, random))