bugfix for loading deleted mods + safe saves

source/funkin/backend/assets/ModsFolder.hx

@@ -51,10 +51,11 @@ class ModsFolder {
 	 */
 	private static var __firstTime:Bool = true;
 	/**
-	 * Initialises `mods` folder by adding callbacks and such.
+	 * Initialises `mods` folder.
 	 */
 	public static function init() {
-
+		if(!getModsList().contains(Options.lastLoadedMod))
+			Options.lastLoadedMod = null;
 	}
 
 	/**
@@ -89,6 +90,24 @@ class ModsFolder {
 		#end
 	}
 
+	public static function getModsList():Array<String> {
+		var mods:Array<String> = [];
+		#if MOD_SUPPORT
+		for(modFolder in FileSystem.readDirectory(modsPath)) {
+			if (FileSystem.isDirectory('${modsPath}${modFolder}')) {
+				mods.push(modFolder);
+			} else {
+				var ext = Path.extension(modFolder).toLowerCase();
+				switch(ext) {
+					case 'zip':
+						// is a zip mod!!
+						mods.push(Path.withoutExtension(modFolder));
+				}
+			}
+		}
+		#end
+		return mods;
+	}
 	public static function getLoadedMods():Array<String> {
 		var libs = [];
 		for (i in Paths.assetsTree.libraries) {

source/funkin/backend/chart/Chart.hx

@@ -206,11 +206,11 @@ class Chart {
 		var chartPath = '${songFolderPath}/charts/${difficulty.trim()}.json';
 		var metaPath = '${songFolderPath}/meta.json';
 
-		File.saveContent(chartPath, Json.stringify(filteredChart, null, saveSettings.prettyPrint == true ? "\t" : null));
+		CoolUtil.safeSaveFile(chartPath, Json.stringify(filteredChart, null, saveSettings.prettyPrint == true ? "\t" : null));
 
 		// idk how null reacts to it so better be sure
 		if (saveSettings.overrideExistingMeta == true || !FileSystem.exists(metaPath))
-			File.saveContent(metaPath, Json.stringify(meta, null, saveSettings.prettyPrint == true ? "\t" : null));
+			CoolUtil.safeSaveFile(metaPath, Json.stringify(meta, null, saveSettings.prettyPrint == true ? "\t" : null));
 		#end
 		return filteredChart;
 	}

source/funkin/backend/system/Main.hx

@@ -120,7 +120,6 @@ class Main extends Sprite
 		ShaderResizeFix.init();
 		Logs.init();
 		Paths.init();
-		ModsFolder.init();
 		DiscordUtil.init();
 		#if GLOBAL_SCRIPT
 		funkin.backend.scripting.GlobalScript.init();
@@ -159,6 +158,7 @@ class Main extends Sprite
 
 		FlxG.mouse.useSystemCursor = true;
 
+		ModsFolder.init();
 		#if MOD_SUPPORT
 		ModsFolder.switchMod(modToLoad.getDefault(Options.lastLoadedMod));
 		#end

source/funkin/backend/utils/CoolUtil.hx

@@ -77,6 +77,22 @@ class CoolUtil
 		#end
 	}
 
+	/**
+	 * Safe saves a file and shows a warning box instead of making the program crash
+	 * @param path Path to save the file at.
+	 * @param data Content of the file to save.
+	 */
+	@:noUsing public static function safeSaveFile(path:String, content:String, showErrorBox:Bool = true) {
+		#if sys
+		try sys.io.File.saveContent(path, content)
+		catch(e) {
+			var errMsg:String = 'Error while trying to save the file: ${Std.string(e).replace('\n', ' ')}';
+			Logs.traceColored([Logs.logText(errMsg, RED)], ERROR);
+			if(showErrorBox) funkin.backend.utils.NativeAPI.showMessageBox("Codename Engine Warning", errMsg, MSG_WARNING);
+		}
+		#end
+	}
+
 	/**
 	 * Shortcut to parse a JSON string
 	 * @param str Path to the JSON string