fix chart reading, scroll chart notes!

Scripts/Scenes/Play.cs

@@ -1,6 +1,8 @@
+using System.Reflection.PortableExecutable;
 using Godot;
 using WacK.Data.Chart;
 using WacK.Data.Mer;
+using WacK.Things.TunnelObjects;
 
 namespace WacK.Scenes
 {
@@ -24,13 +26,55 @@ namespace WacK.Scenes
 		// initialized by another scene, BEFORE loading this one!
 		public static PlayParameters playParams;
 
+		// TunnelObjects we can instantiate
+		public static PackedScene notePlay = GD.Load<PackedScene>("res://Things/TunnelObjects/Notes/NoteTouch.tscn");
+
+		[Export]
+		public Control noteDisplay;
+
 		private Chart chart;
 
 		public override void _Ready()
 		{ 
+			// parse mer and create chart for current play
 			chart = new(playParams.chartPath);
-		} 
-		private void OnDestroy()
+			RealizeChart();
+		}
+
+		/// <summary>
+		/// Instantiates necessary notes onto the noteDisplay for the player to see.
+		/// </summary>
+		private void RealizeChart()
+		{	
+			foreach (var msNote in chart.playNotes)
+			{
+				GD.Print(msNote.Key);
+				foreach (var note in msNote.Value)
+				{
+					THNotePlay nNote;
+					switch (note)
+					{
+						default: // tap note
+							nNote = notePlay.Instantiate<THNotePlay>();
+							break;
+					}
+					nNote.Init(note);
+					var nPos = nNote.Position;
+					nPos.Y = msNote.Key * -1000;
+					nNote.Position = nPos;
+					noteDisplay.AddChild(nNote);
+				}
+			}
+		}
+
+        public override void _Process(double delta)
+        {
+			var nPos = noteDisplay.Position;
+			nPos.Y += (float)delta * 1000;
+			noteDisplay.Position = nPos;
+        }
+
+        private void OnDestroy()
 		{
 			playParams = null;
 		}