Modified particle properties can be saved directly to the config file

Barotrauma/BarotraumaClient/Source/Particles/ParticleManager.cs

@@ -14,6 +14,7 @@ namespace Barotrauma.Particles
 
     class ParticleManager
     {
+        public readonly string ConfigFile;
         public static int particleCount;
 
         private const int MaxOutOfViewDist = 500;
@@ -27,6 +28,7 @@ namespace Barotrauma.Particles
         
         public ParticleManager(string configFile, Camera cam)
         {
+            ConfigFile = configFile;
             this.cam = cam;
 
             particles = new Particle[MaxParticles];

Barotrauma/BarotraumaClient/Source/Screens/ParticleEditorScreen.cs

@@ -83,13 +83,20 @@ namespace Barotrauma
             rightPanel = new GUIFrame(new Rectangle(0, 0, 450, GameMain.GraphicsHeight), null, Alignment.Right, "GUIFrameRight", guiRoot);
             rightPanel.Padding = new Vector4(10.0f, 20.0f, 0.0f, 20.0f);
 
+            var saveAllButton = new GUIButton(new Rectangle(leftPanel.Rect.Right + 20, 10, 150, 20), "Save all", "", guiRoot);
+            saveAllButton.OnClicked += (btn, obj) =>
+            {
+                SerializeAll();
+                return true;
+            };
+
             var serializeToClipBoardButton = new GUIButton(new Rectangle(leftPanel.Rect.Right + 20, 10, 150, 20), "Copy to clipboard", "", guiRoot);
             serializeToClipBoardButton.OnClicked += (btn, obj) =>
             {
                 SerializeToClipboard(selectedPrefab);
                 return true;
             };
-            
+
             emitter = new Emitter();
             var emitterEditor = new SerializableEntityEditor(emitter, false, rightPanel, true);
 
@@ -142,6 +149,34 @@ namespace Barotrauma
             }
         }
 
+        private void SerializeAll()
+        {            
+            XDocument doc = XMLExtensions.TryLoadXml(GameMain.ParticleManager.ConfigFile);
+            if (doc == null || doc.Root == null) return;
+
+            var prefabList = GameMain.ParticleManager.GetPrefabList();
+            foreach (ParticlePrefab prefab in prefabList)
+            {
+                foreach (XElement element in doc.Root.Elements())
+                {
+                    if (element.Name.ToString().ToLowerInvariant() != prefab.Name.ToLowerInvariant()) continue;
+
+                    SerializableProperty.SerializeProperties(prefab, element, true);
+                }
+            }
+
+            XmlWriterSettings settings = new XmlWriterSettings();
+            settings.Indent = true;
+            settings.OmitXmlDeclaration = true;
+            settings.NewLineOnAttributes = true;
+
+            using (var writer = XmlWriter.Create(GameMain.ParticleManager.ConfigFile, settings))
+            {
+                doc.WriteTo(writer);
+                writer.Flush();
+            }
+        }
+
         private void SerializeToClipboard(ParticlePrefab prefab)
         {
             if (prefab == null) return;

Barotrauma/BarotraumaShared/Source/Serialization/SerializableProperty.cs

@@ -443,8 +443,8 @@ namespace Barotrauma
                             break;
                     }
                 }
-
-                element.Add(new XAttribute(property.Name.ToLowerInvariant(), stringValue));
+                
+                element.SetAttributeValue(property.Name.ToLowerInvariant(), stringValue);
             }
         }
     }