using?UnityEngine;
using?UnityEditor;
using?System.Collections;
using?System.Collections.Generic;

[CustomEditor（?typeof（?SongData?）?）]
public?class?SongDataEditor?:?Editor
{
	//Needed?to?draw?2D?lines?and?rectangles
	private?static?Texture2D?_coloredLineTexture;
	private?static?Color?_coloredLineColor;

	private?Gameobject?Guitarobject;
	private?AudioSource?MetronomeSource;
	private?SongPlayer?SongPlayer;
	private?AudioClip?LastAudioClip;

	//Dimensions?of?the?editor
	//Song?View?is?the?one?with?the?black?background?where?you?can?add?notes?etc.
	//ProgressBar?or?Progress?View?is?the?small?preview?on?the?right?where?you?can?navigate?through?the?song
	private?Rect?SongViewRect;
	private?float?SongViewProgressBarWidth?=?20f;
	private?float?SongViewHeight?=?400f;

	//Metronome?Vars
	private?static?bool?UseMetronome;
	private?float?LastMetronomeBeat?=?Mathf.NegativeInfinity;

	//Helper?vars?to?handle?mouse?clicks
	private?Vector2?MouseUpPosition?=?Vector2.zero;
	private?bool?LastClickWasRightMouseButton;

	//Currently?selected?note?index
	private?int?SelectedNote?=?-1;

	//Song?overview?texture?（the?one?on?the?right?which?you?can?use?to?navigate）
	private?Texture2D?ProgressViewTexture;

	//Timer?to?calculate?editor?performance
	Timer?PerformanceTimer?=?new?Timer（）;

	[MenuItem（?“Assets/Create/Song“?）]
	public?static?void?CreateNewSongAsset（）
	{
		SongData?asset?=?scriptableobject.CreateInstance（）;
		AssetDatabase.CreateAsset（?asset?“Assets/NewSong.asset“?）;
		
		EditorUtility.FocusProjectWindow（）;
		Selection.activeobject?=?asset;
	}

	protected?void?OnEnable（）
	{
		//Setup?object?references
		Guitarobject?=?Gameobject.Find（?“Guitar“?）;

		if（?Guitarobject?==?null?）
		{
			return;
		}

		SongPlayer?=?Guitarobject.GetComponentyer>（）;
		MetronomeSource?=?Gameobject.Find（?“Metronome“?）.GetComponent（）;
		LastAudioClip?=?SongPlayer.Song.BackgroundTrack;
		
		//Prepare?playback
		SongPlayer.SetSong（?（SongData）target?）;
		LastMetronomeBeat?=?-Mathf.Ceil（?SongPlayer.Song.AudioStartBeatOffset?）;


		RedrawProgressViewTexture（）;
	}

	protected?void?RedrawProgressViewTexture（）
	{
		int?width?=?（int）SongViewProgressBarWidth;
		int?height?=?（int）SongViewHeight;

		if（?!ProgressViewTexture?）
		{
			//Create?empty?texture?if?it?doesn‘t?exist
			ProgressViewTexture?=?new?Texture2D（?width?height?）;
			ProgressViewTexture.wrapMode?=?TextureWrapMode.Clamp;
		}

		//Draw?Background?Color
		Color[]?BackgroundColor?=?new?Color[?width?*?height?];
		for（?int?i?=?0;?i?		{
			BackgroundColor[?i?]?=?new?Color（?0.13f?0.1f?0.26f?）;
		}

		ProgressViewTexture.SetPixels（?0?0?width?height?BackgroundColor?）;

		//Calculate?the?scale?in?which?the?notes?are?drawn?so?they?all?fit?into?the?progress?view
		float?totalBeats?=?SongPlayer.Song.GetLengthInBeats（）;
		float?heightOfOneBeat?=?1f?/?totalBeats?*?（float）height;

		//Dr