Retain current frame source in project, show helpful error when trying to open .osci file from wrong place, correctly open a folder containing lua files

src/main/java/sh/ball/gui/controller/GeneralController.java

@@ -84,7 +84,7 @@ public class GeneralController implements Initializable, SubController {
 
         new Thread(() -> {
           try {
-            mainController.updateFiles(files, names);
+            mainController.updateFiles(files, names, 0);
           } catch (Exception e) {
             e.printStackTrace();
           }

src/main/java/sh/ball/gui/controller/MainController.java

@@ -647,7 +647,7 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
     objTitledPane.setDisable(!ObjParser.isObjFile(frameSourcePaths.get(index)));
   }
 
-  void updateFiles(List<byte[]> files, List<String> names) throws Exception {
+  void updateFiles(List<byte[]> files, List<String> names, int startingFrameSource) throws Exception {
     List<FrameSource<Vector2>> newSampleSources = new ArrayList<>();
     List<FrameSource<List<Shape>>> newFrameSources = new ArrayList<>();
     List<String> newFrameSourcePaths = new ArrayList<>();
@@ -661,11 +661,11 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
     for (int i = 0; i < files.size(); i++) {
       try {
         if (LuaParser.isLuaFile(names.get(i))) {
-          newFrameSources.add(null);
           newSampleSources.add(new LuaParser(new ByteArrayInputStream(files.get(i))).parse());
+          newFrameSources.add(null);
         } else {
-          newSampleSources.add(null);
           newFrameSources.add(ParserFactory.getParser(names.get(i), files.get(i)).parse());
+          newSampleSources.add(null);
         }
         newFrameSourcePaths.add(names.get(i));
         newOpenFiles.add(files.get(i));
@@ -689,7 +689,7 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
         frameSources = newFrameSources;
         frameSourcePaths = newFrameSourcePaths;
         openFiles = newOpenFiles;
-        changeFrameSource(0);
+        changeFrameSource(startingFrameSource);
       }
     });
   }
@@ -1014,6 +1014,10 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
       }
       root.appendChild(filesElement);
 
+      Element frameSource = document.createElement("frameSource");
+      frameSource.appendChild(document.createTextNode(String.valueOf(currentFrameSource)));
+      root.appendChild(frameSource);
+
       TransformerFactory transformerFactory = TransformerFactory.newInstance();
       Transformer transformer = transformerFactory.newTransformer();
       DOMSource domSource = new DOMSource(document);
@@ -1129,7 +1133,14 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
         String fileName = fileElement.getElementsByTagName("name").item(0).getTextContent();
         fileNames.add(fileName);
       }
-      updateFiles(files, fileNames);
+
+      Element frameSource = (Element) root.getElementsByTagName("frameSource").item(0);
+      if (frameSource != null) {
+        updateFiles(files, fileNames, Integer.parseInt(frameSource.getTextContent()));
+      } else {
+        updateFiles(files, fileNames, 0);
+      }
+
       openProjectPath = projectFileName;
     } catch (Exception e) {
       e.printStackTrace();

src/main/java/sh/ball/parser/ParserFactory.java

@@ -22,6 +22,8 @@ public class ParserFactory {
       return new SvgParser(bais);
     } else if (TextParser.isTxtFile(filePath)) {
       return new TextParser(bais);
+    } else if (filePath.matches(".*\\.osci")) {
+      throw new IOException(".osci project files should be opened using File > Open Project");
     }
     throw new IOException("Can't parse " + new File(filePath).getName());
   }

src/main/resources/fxml/general.fxml

@@ -9,7 +9,7 @@
 <AnchorPane id="control-pane" prefHeight="324.0" prefWidth="364.0" xmlns="http://javafx.com/javafx/17" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sh.ball.gui.controller.GeneralController">
     <children>
         <Button fx:id="chooseFileButton" layoutX="14.0" layoutY="26.0" mnemonicParsing="false" prefHeight="26.0" prefWidth="114.0" text="Choose File" />
-        <Label fx:id="fileLabel" layoutX="143.0" layoutY="30.0" maxWidth="270.0" prefHeight="18.0" prefWidth="210.0" text="cube.obj" />
+        <Label fx:id="fileLabel" alignment="TOP_LEFT" layoutX="143.0" layoutY="30.0" maxWidth="270.0" prefHeight="42.0" prefWidth="210.0" text="cube.obj" wrapText="true" />
         <Label fx:id="recordLabel" layoutX="13.0" layoutY="304.0" maxWidth="451.0" prefHeight="18.0" prefWidth="343.0" />
         <Label id="frequency" fx:id="frequencyLabel" layoutX="14.0" layoutY="141.0" prefHeight="58.0" prefWidth="343.0" text="L/R Frequency:&#10; &#10;" />
         <Button fx:id="chooseFolderButton" layoutX="14.0" layoutY="76.0" mnemonicParsing="false" prefHeight="26.0" prefWidth="114.0" text="Choose Folder" />