updates to early window and health gain + work on waveform

source/Waveform.hx

@@ -0,0 +1,88 @@
+import flixel.util.FlxColor;
+import flixel.FlxG;
+import openfl.geom.Rectangle;
+import haxe.io.Bytes;
+import lime.media.AudioBuffer;
+import flixel.FlxSprite;
+
+class Waveform extends FlxSprite
+{
+
+    /// referenced from https://github.com/gedehari/HaxeFlixel-Waveform-Rendering/blob/master/source/PlayState.hx
+    /// by gedehari
+
+    public var buffer:AudioBuffer;
+    public var data:Bytes;
+
+    public function new(x:Int,y:Int, audioPath:String, height:Int)
+    {
+        super(x,y);
+
+        var path = StringTools.replace(audioPath, "songs:","");
+
+        trace("loading " + path);
+
+        buffer = AudioBuffer.fromFile(path);
+
+        trace("BPS: " + buffer.bitsPerSample + " - Channels: " + buffer.channels);
+
+        makeGraphic(height,350,FlxColor.TRANSPARENT);
+
+        angle = 90;
+
+        data = buffer.data.toBytes();
+    }
+
+    public function drawWaveform()
+    {
+		var index:Int = 0;
+		var drawIndex:Int = 0;
+		var samplesPerCollumn:Int = 600;
+
+		var min:Float = 0;
+		var max:Float = 0;
+
+        while ((index * 4) < (data.length - 1))
+			{
+				var byte:Int = data.getUInt16(index * 4);
+
+				if (byte > 65535 / 2)
+					byte -= 65535;
+
+				var sample:Float = (byte / 65535);
+
+				if (sample > 0)
+				{
+					if (sample > max)
+						max = sample;
+				}
+				else if (sample < 0)
+				{
+					if (sample < min)
+						min = sample;
+				}
+
+                if ((index % samplesPerCollumn) == 0)
+				{
+					// trace("min: " + min + ", max: " + max);
+
+					if (drawIndex > 350)
+					{
+						drawIndex = 0;
+					}
+
+					var pixelsMin:Float = Math.abs(min * 300);
+					var pixelsMax:Float = max * 300;
+
+					pixels.fillRect(new Rectangle(drawIndex, x, 1, height), 0xFF000000);
+					pixels.fillRect(new Rectangle(drawIndex, y - pixelsMin, 1, pixelsMin + pixelsMax), FlxColor.WHITE);
+					drawIndex += 1;
+
+					min = 0;
+					max = 0;
+				}
+
+				index += 1;
+			}
+    }
+}