Fix throwable solution (#4590)

* Fix throwable solution

* Revert previous commit

* Change Spillable and SpillBehavior

* Fix sloth's suggestion. Add more documents

Content.Server/Destructible/Thresholds/Behaviors/SpillBehavior.cs

@@ -10,13 +10,32 @@ namespace Content.Server.Destructible.Thresholds.Behaviors
     [DataDefinition]
     public class SpillBehavior : IThresholdBehavior
     {
+        [DataField("solution")]
+        public string? Solution;
+
+        /// <summary>
+        /// If there is a SpillableComponent on IEntity owner use it to create a puddle/smear.
+        /// Or whatever solution is specified in the behavior itself.
+        /// If none are available do nothing.
+        /// </summary>
+        /// <param name="owner">Entity on which behavior is executed</param>
+        /// <param name="system">system calling the behavior</param>
         public void Execute(IEntity owner, DestructibleSystem system)
         {
-            // TODO see if this is correct
-            if (!EntitySystem.Get<SolutionContainerSystem>().TryGetSolution(owner, SpillableComponent.SolutionName, out var solution))
-                return;
+            var solutionContainerSystem = EntitySystem.Get<SolutionContainerSystem>();
 
-            solution.SpillAt(owner.Transform.Coordinates, "PuddleSmear", false);
+
+            if (owner.TryGetComponent(out SpillableComponent? spillableComponent) &&
+                solutionContainerSystem.TryGetSolution(owner.Uid, spillableComponent.SolutionName,
+                    out var compSolution))
+            {
+                compSolution.SpillAt(owner.Transform.Coordinates, "PuddleSmear", false);
+            }
+            else if (Solution != null &&
+                     solutionContainerSystem.TryGetSolution(owner.Uid, Solution, out var behaviorSolution))
+            {
+                behaviorSolution.SpillAt(owner.Transform.Coordinates, "PuddleSmear", false);
+            }
         }
     }
 }