fixed asset ids at load time

Author: NotImplementedLife

FlipnoteDotNet/App/Service/AssetsService.cs

@@ -27,6 +27,15 @@ public AssetsService(UndoStack undoStack)
             BindingAssets = new BindingList<Asset>(fAssets);
         }
 
+        public void LoadSavedAssets(Asset[] assets)
+        {
+            foreach (Asset asset in assets)
+            {
+                Assets.Add(asset);
+                IdCounter = Math.Max(IdCounter, asset.Id + 1);
+            }
+        }
+
         public void AddAsset(Asset asset)
         {
             if(asset.Id==0)

FlipnoteDotNet/App/Storage/Codecs/V1.cs

@@ -28,11 +28,10 @@ public static AppState DecodeProject(Project project, AppState baseState, Canvas
 
             var paletteConfig = projv1.PaletteConfig.ToPaletteConfig();
 
-            var appState = new AppState(paletteConfig, baseState.UndoStack);            
-
-            foreach (var a in projv1.Assets)
-                appState.AssetsService.Assets.Add(a.ToAsset());
+            var appState = new AppState(paletteConfig, baseState.UndoStack);
 
+            appState.AssetsService.LoadSavedAssets(projv1.Assets.Select(_ => _.ToAsset()).ToArray());
+            
             Func<int, Asset> findAssetById = (id) => appState.AssetsService.Assets.Where(a => a.Id == id).FirstOrDefault();
 
             foreach (var f in projv1.Frames)