Initial commit

Scripts/Scenes/DebugChartLoader.cs

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+using Godot;
+using System;
+
+namespace WacK.Scenes
+{
+	public partial class DebugChartLoader : Node
+	{
+		[Export]
+		private LineEdit inputField;
+
+		[Export]
+		private LineEdit soundField;
+
+		[Export]
+		private OptionButton difficultyButton;
+
+		[Export]
+		private Button playButton;
+
+
+		// Called when the node enters the scene tree for the first time.
+		public override void _Ready()
+		{
+			playButton.Pressed += PlayClicked;
+		}
+
+		private void PlayClicked()
+		{
+			// TODO: globally accessible verify song folder and chart/audio function
+			var songPath = $"user://songs/{inputField.Text}";
+			var chartPath = $"{songPath}/{difficultyButton.Selected}.mer";
+			var soundPath = $"{songPath}/{soundField.Text}";
+			GD.Print($"Song: {songPath}\nChart: {chartPath}\nSound: {soundPath}");
+
+			// folder check
+			using var dir = DirAccess.Open(songPath);
+			if (dir == null)
+			{
+				GD.PrintErr($"Error occurred opening song folder!\n{DirAccess.GetOpenError()}");
+				return;
+			}
+
+			// chart check
+			using var chartFile = FileAccess.Open(chartPath, FileAccess.ModeFlags.Read);
+			if (chartFile == null)
+			{
+				GD.PrintErr($"Error occurred opening chart!\n{FileAccess.GetOpenError()}");
+				return;
+			}
+
+			// sound check
+			using var soundFile = FileAccess.Open(soundPath, FileAccess.ModeFlags.Read);
+			if (soundFile == null)
+			{
+				GD.PrintErr($"Error occurred opening sound!\n{FileAccess.GetOpenError()}");
+				return;
+			}
+
+			Play.playParams = new PlayParameters(chartPath, soundPath);
+			GetTree().ChangeSceneToFile("res://Scenes/Play.tscn");
+		}
+
+		public override void _ExitTree()
+		{
+			playButton.Pressed -= PlayClicked;
+		}
+	}
+}

Scripts/Scenes/Play.cs

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+using Godot;
+
+namespace WacK.Scenes
+{
+	public class PlayParameters
+	{
+		/* TODO: store song ID from internal database
+		public string songID;
+		public Difficulty diff;
+		*/
+		public string chartPath;
+		public string soundPath;
+
+		public PlayParameters(string chPath, string snPath)
+		{
+			chartPath = chPath;
+			soundPath = snPath;
+		}
+	}
+	public partial class Play : Node
+	{
+		// initialized by another scene, BEFORE loading this one!
+		public static PlayParameters playParams;
+
+		private void Start()
+		{
+			
+		}
+
+		private void OnDestroy()
+		{
+			playParams = null;
+		}
+	}
+}

Scripts/Scenes/Startup.cs

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+using Godot;
+using System;
+
+namespace WacK.Scenes
+{
+	public partial class Startup : Node
+	{
+		// Called when the node enters the scene tree for the first time.
+		public override void _Ready()
+		{
+			GD.Print($"User directory: {OS.GetUserDataDir()}");
+			using var songDir = DirAccess.Open("user://songs");
+			if (songDir != null)
+			{
+				GD.Print("Successfully opened songs directory!");
+				// load songs
+			}
+			else
+			{
+				GD.Print("Could not find songs directory! Creating it...");
+
+				DirAccess.MakeDirAbsolute("user://songs");
+				using var newSongDir = DirAccess.Open("user://songs");
+
+				if (newSongDir != null)
+				{
+					GD.Print("Songs folder created successfully!");
+					// create note
+					var note = "Place song folders here. Nested folders supported for organization.\n";
+					using var f = FileAccess.Open($"{newSongDir.GetCurrentDir()}/note.txt", FileAccess.ModeFlags.Write);
+					f.StoreString(note);
+
+					// TODO: add in-game notice
+				}
+				else
+				{
+					GD.PrintErr($"Could not create the songs directory!\n{DirAccess.GetOpenError()}");
+				}
+
+			}
+
+			// Change scenes
+			GetTree().ChangeSceneToFile("res://Scenes/DebugChartLoader.tscn");
+		}
+	}
+}