sequencer in progress

hxformat.json

@@ -2,6 +2,7 @@
 	"lineEnds": {
 		"leftCurly": "both",
 		"rightCurly": "both",
+		"emptyCurly": "break",
 		"objectLiteralCurly": {
 			"leftCurly": "after"
 		}

source/ChartingState.hx

@@ -2,7 +2,10 @@ package;
 
 import flixel.FlxG;
 import flixel.FlxState;
+import flixel.group.FlxGroup.FlxTypedGroup;
 import flixel.ui.FlxButton;
+import flixel.ui.FlxSpriteButton;
+import flixel.util.FlxColor;
 import haxe.Json;
 import openfl.events.Event;
 import openfl.events.IOErrorEvent;
@@ -13,13 +16,61 @@ import openfl.net.FileReference;
 class ChartingState extends MusicBeatState
 {
 	var _file:FileReference;
+	var sequencer:FlxTypedGroup<FlxSpriteButton>;
+	var notes:Array<Dynamic> = [];
 
 	override function create()
 	{
 		var saveButton:FlxButton = new FlxButton(0, 0, "Save", function()
 		{
-			// bullshit
+			saveLevel();
+		});
+		saveButton.screenCenter();
+		add(saveButton);
 
+		createStepChart();
+
+		super.create();
+	}
+
+	function createStepChart()
+	{
+		sequencer = new FlxTypedGroup<FlxSpriteButton>();
+		add(sequencer);
+
+		for (r in 0...2)
+		{
+			notes.push([]);
+			for (i in 0...16)
+			{
+				notes[r].push(false);
+				var seqBtn:FlxSpriteButton = new FlxSpriteButton((35 * r) + 10, (35 * i) + 50, null, function()
+				{
+					notes[r][i] = !notes[r][i];
+				});
+
+				seqBtn.makeGraphic(30, 30, FlxColor.WHITE);
+				seqBtn.ID = i + (16 * r);
+				sequencer.add(seqBtn);
+			}
+		}
+	}
+
+	override function update(elapsed:Float)
+	{
+		sequencer.forEach(function(spr:FlxSpriteButton)
+		{
+			if (notes[Std.int(spr.ID / 16)][spr.ID % 16])
+				spr.alpha = 1;
+			else
+				spr.alpha = 0.5;
+		});
+
+		super.update(elapsed);
+	}
+
+	private function saveLevel()
+	{
 		var json = {
 			"song": "Bopeebo",
 			"bpm": 100,
@@ -36,11 +87,6 @@ class ChartingState extends MusicBeatState
 			_file.addEventListener(IOErrorEvent.IO_ERROR, onSaveError);
 			_file.save(data, json.song + ".json");
 		}
-		});
-		saveButton.screenCenter();
-		add(saveButton);
-
-		super.create();
 	}
 
 	function onSaveComplete(_):Void