package funkin.play;

import flixel.FlxCamera;
import flixel.FlxObject;
import flixel.FlxSprite;
import flixel.FlxState;
import flixel.FlxSubState;
import flixel.addons.transition.FlxTransitionableState;
import flixel.group.FlxGroup;
import flixel.math.FlxMath;
import flixel.math.FlxRect;
import flixel.text.FlxText;
import flixel.tweens.FlxEase;
import flixel.tweens.FlxTween;
import flixel.ui.FlxBar;
import flixel.util.FlxColor;
import flixel.util.FlxSort;
import flixel.util.FlxTimer;
import funkin.Note;
import funkin.Section.SwagSection;
import funkin.SongLoad.SwagSong;
import funkin.charting.ChartingState;
import funkin.modding.events.ScriptEvent;
import funkin.modding.events.ScriptEventDispatcher;
import funkin.play.GameOverSubstate;
import funkin.play.HealthIcon;
import funkin.play.Strumline.StrumlineArrow;
import funkin.play.Strumline.StrumlineStyle;
import funkin.play.character.BaseCharacter;
import funkin.play.character.CharacterData;
import funkin.play.scoring.Scoring;
import funkin.play.stage.Stage;
import funkin.play.stage.StageData;
import funkin.ui.PopUpStuff;
import funkin.ui.PreferencesMenu;
import funkin.ui.stageBuildShit.StageOffsetSubstate;
import funkin.util.Constants;
import funkin.util.SortUtil;
import lime.ui.Haptic;

using StringTools;

#if discord_rpc
import Discord.DiscordClient;
#end

class PlayState extends MusicBeatState
{
	/**
	 * STATIC VARIABLES
	 * Static variables should be used for information that must be persisted between states or between resets,
	 * such as the active song or song playlist.
	 */
	/**
	 * The currently active PlayState.
	 * Since there is only one PlayState in existance at a time, we can use a singleton.
	 */
	public static var instance:PlayState = null;

	/**
	 * The currently active song. Includes data about what stage should be used, what characters,
	 * and the notes to be played.
	 */
	public static var currentSong:SwagSong = null;

	/**
	 * Whether the game is currently in Story Mode. If false, we are in Free Play Mode.
	 */
	public static var isStoryMode:Bool = false;

	/**
	 * Whether the game is currently in Practice Mode.
	 * If true, player will not lose gain or lose score from notes.
	 */
	public static var isPracticeMode:Bool = false;

	/**
	 * Whether the game is currently in a cutscene, and gameplay should be stopped.
	 */
	public static var isInCutscene:Bool = false;

	/**
	 * Whether the game is currently in the countdown before the song resumes.
	 */
	public static var isInCountdown:Bool = false;

	/**
	 * Gets set to true when the PlayState needs to reset (player opted to restart or died).
	 * Gets disabled once resetting happens.
	 */
	public static var needsReset:Bool = false;

	/**
	 * The current "Blueball Counter" to display in the pause menu.
	 * Resets when you beat a song or go back to the main menu.
	 */
	public static var deathCounter:Int = 0;

	/**
	 * The default camera zoom level. The camera lerps back to this after zooming in.
	 * Defaults to 1.05 but may be larger or smaller depending on the current stage.
	 */
	public static var defaultCameraZoom:Float = 1.05;

	/**
	 * Used to persist the position of the `cameraFollowPosition` between resets.
	 */
	private static var previousCameraFollowPoint:FlxObject = null;

	/**
	 * PUBLIC INSTANCE VARIABLES
	 * Public instance variables should be used for information that must be reset or dereferenced
	 * every time the state is reset, such as the currently active stage, but may need to be accessed externally.
	 */
	/**
	 * The currently active Stage. This is the object containing all the props.
	 */
	public var currentStage:Stage = null;

	/**
	 * The internal ID of the currently active Stage.
	 * Used to retrieve the data required to build the `currentStage`.
	 */
	public var currentStageId:String = '';

	/**
	 * The player's current health.
	 * The default maximum health is 2.0, and the default starting health is 1.0.
	 */
	public var health:Float = 1;

	/**
	 * The player's current score.
	 */
	public var songScore:Int = 0;

	/**
	 * An empty FlxObject contained in the scene.
	 * The current gameplay camera will be centered on this object. Tween its position to move the camera smoothly.
	 * 
	 * This is an FlxSprite for two reasons:
	 * 1. It needs to be an object in the scene for the camera to be configured to follow it.
	 * 2. It needs to be an FlxSprite to allow a graphic (optionally, for debug purposes) to be drawn on it.
	 */
	public var cameraFollowPoint:FlxSprite = new FlxSprite(0, 0);

	/**
	 * PRIVATE INSTANCE VARIABLES
	 * Private instance variables should be used for information that must be reset or dereferenced
	 * every time the state is reset, but should not be accessed externally.
	 */
	/**
	 * The Array containing the notes that are not currently on the screen.
	 * The `update()` function regularly shifts these out to add new notes to the screen.
	 */
	private var inactiveNotes:Array<Note>;

	/**
	 * If true, the player is allowed to pause the game.
	 * Disabled during the ending of a song.
	 */
	private var mayPauseGame:Bool = true;

	/**
	 * The displayed value of the player's health.
	 * Used to provide smooth animations based on linear interpolation of the player's health.
	 */
	private var healthLerp:Float = 1;

	/**
	 * RENDER OBJECTS
	 */
	/**
	 * The SpriteGroup containing the notes that are currently on the screen or are about to be on the screen.
	 */
	private var activeNotes:FlxTypedGroup<Note> = null;

	/**
	 * The FlxText which displays the current score.
	 */
	private var scoreText:FlxText;

	/**
	 * The bar which displays the player's health.
	 * Dynamically updated based on the value of `healthLerp` (which is based on `health`).
	 */
	public var healthBar:FlxBar;

	/**
	 * The background image used for the health bar.
	 * Emma says the image is slightly skewed so I'm leaving it as an image instead of a `createGraphic`.
	 */
	public var healthBarBG:FlxSprite;

	/**
	 * The health icon representing the player.
	 */
	public var iconP1:HealthIcon;

	/**
	 * The health icon representing the opponent.
	 */
	public var iconP2:HealthIcon;

	/**
	 * The sprite group containing active player's strumline notes.
	 */
	public var playerStrumline:Strumline;

	/**
	 * The sprite group containing opponent's strumline notes.
	 */
	public var enemyStrumline:Strumline;

	/**
	 * The camera which contains, and controls visibility of, the user interface elements.
	 */
	public var camHUD:FlxCamera;

	/**
	 * The camera which contains, and controls visibility of, the stage and characters.
	 */
	public var camGame:FlxCamera;

	/**
	 * PROPERTIES
	 */
	/**
	 * If a substate is rendering over the PlayState, it is paused and normal update logic is skipped.
	 * Examples include:
	 * - The Pause screen is open.
	 * - The Game Over screen is open.
	 * - The Chart Editor screen is open.
	 */
	private var isGamePaused(get, never):Bool;

	function get_isGamePaused():Bool
	{
		// Note: If there is a substate which requires the game to act unpaused,
		//       this should be changed to include something like `&& Std.isOfType()`
		return this.subState != null;
	}

	// TODO: Reorganize these variables (maybe there should be a separate class like Conductor just to hold them?)
	public static var storyWeek:Int = 0;
	public static var storyPlaylist:Array<String> = [];
	public static var storyDifficulty:Int = 1;
	public static var seenCutscene:Bool = false;
	public static var campaignScore:Int = 0;

	private var vocals:VoicesGroup;
	private var vocalsFinished:Bool = false;

	private var camZooming:Bool = false;
	private var gfSpeed:Int = 1;
	private var combo:Int = 0;
	private var generatedMusic:Bool = false;
	private var startingSong:Bool = false;

	var dialogue:Array<String>;
	var talking:Bool = true;
	var doof:DialogueBox;
	var grpNoteSplashes:FlxTypedGroup<NoteSplash>;
	var comboPopUps:PopUpStuff;
	var perfectMode:Bool = false;
	var previousFrameTime:Int = 0;
	var songTime:Float = 0;
	var cameraRightSide:Bool = false;

	#if discord_rpc
	// Discord RPC variables
	var storyDifficultyText:String = "";
	var iconRPC:String = "";
	var songLength:Float = 0;
	var detailsText:String = "";
	var detailsPausedText:String = "";
	#end

	override public function create()
	{
		super.create();

		if (currentSong == null)
		{
			lime.app.Application.current.window.alert("There was a critical error while accessing the selected song. Click OK to return to the main menu.",
				"Error loading PlayState");
			FlxG.switchState(new MainMenuState());
			return;
		}

		instance = this;

		// Displays the camera follow point as a sprite for debug purposes.
		// TODO: Put this on a toggle?
		cameraFollowPoint.makeGraphic(8, 8, 0xFF00FF00);
		cameraFollowPoint.visible = false;
		cameraFollowPoint.zIndex = 1000000;

		// Reduce physics accuracy (who cares!!!) to improve animation quality.
		FlxG.fixedTimestep = false;

		// This state receives update() even when a substate is active.
		this.persistentUpdate = true;
		// This state receives draw calls even when a substate is active.
		this.persistentDraw = true;

		// Stop any pre-existing music.
		if (FlxG.sound.music != null)
			FlxG.sound.music.stop();

		// Prepare the current song to be played.
		FlxG.sound.cache(Paths.inst(currentSong.song));
		FlxG.sound.cache(Paths.voices(currentSong.song));

		Conductor.songPosition = -5000;

		// Initialize stage stuff.
		initCameras();

		if (currentSong == null)
			currentSong = SongLoad.loadFromJson('tutorial');

		Conductor.mapBPMChanges(currentSong);
		Conductor.bpm = currentSong.bpm;

		switch (currentSong.song.toLowerCase())
		{
			case 'senpai':
				dialogue = CoolUtil.coolTextFile(Paths.txt('songs/senpai/senpaiDialogue'));
			case 'roses':
				dialogue = CoolUtil.coolTextFile(Paths.txt('songs/roses/rosesDialogue'));
			case 'thorns':
				dialogue = CoolUtil.coolTextFile(Paths.txt('songs/thorns/thornsDialogue'));
		}

		if (dialogue != null)
		{
			doof = new DialogueBox(false, dialogue);
			doof.scrollFactor.set();
			doof.finishThing = startCountdown;
			doof.cameras = [camHUD];
		}

		// Once the song is loaded, we can continue and initialize the stage.

		var healthBarYPos:Float = PreferencesMenu.getPref('downscroll') ? FlxG.height * 0.1 : FlxG.height * 0.9;
		healthBarBG = new FlxSprite(0, healthBarYPos).loadGraphic(Paths.image('healthBar'));
		healthBarBG.screenCenter(X);
		healthBarBG.scrollFactor.set(0, 0);
		add(healthBarBG);

		healthBar = new FlxBar(healthBarBG.x + 4, healthBarBG.y + 4, RIGHT_TO_LEFT, Std.int(healthBarBG.width - 8), Std.int(healthBarBG.height - 8), this,
			'healthLerp', 0, 2);
		healthBar.scrollFactor.set();
		healthBar.createFilledBar(Constants.HEALTH_BAR_RED, Constants.HEALTH_BAR_GREEN);
		add(healthBar);

		initStage();
		initCharacters();
		#if discord_rpc
		initDiscord();
		#end

		// Configure camera follow point.
		if (previousCameraFollowPoint != null)
		{
			cameraFollowPoint.setPosition(previousCameraFollowPoint.x, previousCameraFollowPoint.y);
			previousCameraFollowPoint = null;
		}
		add(cameraFollowPoint);

		comboPopUps = new PopUpStuff();
		add(comboPopUps);

		grpNoteSplashes = new FlxTypedGroup<NoteSplash>();

		var noteSplash:NoteSplash = new NoteSplash(100, 100, 0);
		grpNoteSplashes.add(noteSplash);
		noteSplash.alpha = 0.1;

		add(grpNoteSplashes);

		generateSong();

		resetCamera();

		FlxG.worldBounds.set(0, 0, FlxG.width, FlxG.height);

		scoreText = new FlxText(healthBarBG.x + healthBarBG.width - 190, healthBarBG.y + 30, 0, "", 20);
		scoreText.setFormat(Paths.font("vcr.ttf"), 16, FlxColor.WHITE, RIGHT, FlxTextBorderStyle.OUTLINE, FlxColor.BLACK);
		scoreText.scrollFactor.set();
		add(scoreText);

		// Attach the groups to the HUD camera so they are rendered independent of the stage.
		grpNoteSplashes.cameras = [camHUD];
		activeNotes.cameras = [camHUD];
		healthBar.cameras = [camHUD];
		healthBarBG.cameras = [camHUD];
		iconP1.cameras = [camHUD];
		iconP2.cameras = [camHUD];
		scoreText.cameras = [camHUD];
		leftWatermarkText.cameras = [camHUD];
		rightWatermarkText.cameras = [camHUD];

		// if (SONG.song == 'South')
		// FlxG.camera.alpha = 0.7;
		// UI_camera.zoom = 1;

		// cameras = [FlxG.cameras.list[1]];
		startingSong = true;

		if (isStoryMode && !seenCutscene)
		{
			seenCutscene = true;

			switch (currentSong.song.toLowerCase())
			{
				case "winter-horrorland":
					VanillaCutscenes.playHorrorStartCutscene();
				case 'senpai' | 'roses' | 'thorns':
					schoolIntro(doof); // doof is assumed to be non-null, lol!
				case 'ugh':
					VanillaCutscenes.playUghCutscene();
				case 'stress':
					VanillaCutscenes.playStressCutscene();
				case 'guns':
					VanillaCutscenes.playGunsCutscene();
				default:
					// VanillaCutscenes will call startCountdown later.
					// TODO: Alternatively: make a song script that allows startCountdown to be called,
					// then cancels the countdown, hides the strumline, plays the cutscene,
					// then calls Countdown.performCountdown()
					startCountdown();
			}
		}
		else
		{
			startCountdown();
		}

		#if debug
		this.rightWatermarkText.text = Constants.VERSION;
		#end
	}

	/**
	 * Initializes the game and HUD cameras.
	 */
	function initCameras()
	{
		// Configure the default camera zoom level.
		defaultCameraZoom = FlxCamera.defaultZoom * 1.05;

		camGame = new SwagCamera();
		camHUD = new FlxCamera();
		camHUD.bgColor.alpha = 0;

		FlxG.cameras.reset(camGame);
		FlxG.cameras.add(camHUD, false);
	}

	function initStage()
	{
		// TODO: Move stageId to the song file.
		switch (currentSong.song.toLowerCase())
		{
			case 'spookeez' | 'monster' | 'south':
				currentStageId = "spookyMansion";
			case 'pico' | 'blammed' | 'philly':
				currentStageId = 'phillyTrain';
			case "milf" | 'satin-panties' | 'high':
				currentStageId = 'limoRide';
			case "cocoa" | 'eggnog':
				currentStageId = 'mallXmas';
			case 'winter-horrorland':
				currentStageId = 'mallEvil';
			case 'senpai' | 'roses':
				currentStageId = 'school';
			case "darnell" | "lit-up" | "2hot":
				// currentStageId = 'phillyStreets';
				currentStageId = 'pyro';
			case 'pyro':
				currentStageId = 'pyro';
			case 'thorns':
				currentStageId = 'schoolEvil';
			case 'guns' | 'stress' | 'ugh':
				currentStageId = 'tankmanBattlefield';
			case 'experimental-phase' | 'perfection':
				// SERIOUSLY REVAMP THE CHART FORMAT ALREADY
				currentStageId = "breakout";
			default:
				currentStageId = "mainStage";
		}
		// Loads the relevant stage based on its ID.
		loadStage(currentStageId);
	}

	function initCharacters()
	{
		iconP1 = new HealthIcon(currentSong.player1, 0);
		iconP1.y = healthBar.y - (iconP1.height / 2);
		add(iconP1);

		iconP2 = new HealthIcon(currentSong.player2, 1);
		iconP2.y = healthBar.y - (iconP2.height / 2);
		add(iconP2);

		//
		// GIRLFRIEND
		//

		// TODO: Tie the GF version to the song data, not the stage ID or the current player.
		var gfVersion:String = 'gf';

		switch (currentStageId)
		{
			case 'pyro' | 'phillyStreets':
				gfVersion = 'nene';
			case 'limoRide':
				gfVersion = 'gf-car';
			case 'mallXmas' | 'mallEvil':
				gfVersion = 'gf-christmas';
			case 'school' | 'schoolEvil':
				gfVersion = 'gf-pixel';
			case 'tankmanBattlefield':
				gfVersion = 'gf-tankmen';
			case 'breakout':
				// SERIOUSLY PUT THIS SHIT IN THE CHART
				gfVersion = '';
		}

		if (currentSong.player1 == "pico")
			gfVersion = "nene";

		if (currentSong.song.toLowerCase() == 'stress')
			gfVersion = 'pico-speaker';

		if (currentSong.song.toLowerCase() == 'tutorial')
			gfVersion = '';

		//
		// GIRLFRIEND
		//
		var girlfriend:BaseCharacter = CharacterDataParser.fetchCharacter(gfVersion);

		if (girlfriend != null)
		{
			girlfriend.characterType = CharacterType.GF;
			girlfriend.scrollFactor.set(0.95, 0.95);
			if (gfVersion == 'pico-speaker')
			{
				girlfriend.x -= 50;
				girlfriend.y -= 200;
			}
		}
		else if (gfVersion != '')
		{
			trace('WARNING: Could not load girlfriend character with ID ${gfVersion}, skipping...');
		}

		//
		// DAD
		//
		var dad:BaseCharacter = CharacterDataParser.fetchCharacter(currentSong.player2);

		if (dad != null)
		{
			dad.characterType = CharacterType.DAD;
		}

		switch (currentSong.player2)
		{
			case 'gf':
				if (isStoryMode)
				{
					cameraFollowPoint.x += 600;
					tweenCamIn();
				}
		}

		//
		// BOYFRIEND
		//
		var boyfriend:BaseCharacter = CharacterDataParser.fetchCharacter(currentSong.player1);

		if (boyfriend != null)
		{
			boyfriend.characterType = CharacterType.BF;
		}

		if (currentStage != null)
		{
			// We're using Eric's stage handler.
			// Characters get added to the stage, not the main scene.
			if (girlfriend != null)
			{
				currentStage.addCharacter(girlfriend, GF);
			}

			if (boyfriend != null)
			{
				currentStage.addCharacter(boyfriend, BF);
			}

			if (dad != null)
			{
				currentStage.addCharacter(dad, DAD);
				// Camera starts at dad.
				cameraFollowPoint.setPosition(dad.cameraFocusPoint.x, dad.cameraFocusPoint.y);
			}

			// Redo z-indexes.
			currentStage.refresh();
		}
	}

	/**
	 * Removes any references to the current stage, then clears the stage cache,
	 * then reloads all the stages.
	 * 
	 * This is useful for when you want to edit a stage without reloading the whole game.
	 * Reloading works on both the JSON and the HXC, if applicable.
	 * 
	 * Call this by pressing F5 on a debug build.
	 */
	override function debug_refreshModules()
	{
		// Remove the current stage. If the stage gets deleted while it's still in use,
		// it'll probably crash the game or something.
		if (this.currentStage != null)
		{
			remove(currentStage);
			var event:ScriptEvent = new ScriptEvent(ScriptEvent.DESTROY, false);
			ScriptEventDispatcher.callEvent(currentStage, event);
			currentStage = null;
		}

		super.debug_refreshModules();
	}

	/**
	 * Pauses music and vocals easily.
	 */
	public function pauseMusic()
	{
		FlxG.sound.music.pause();
		vocals.pause();
	}

	/**
	 * Loads stage data from cache, assembles the props,
	 * and adds it to the state.
	 * @param id 
	 */
	function loadStage(id:String)
	{
		currentStage = StageDataParser.fetchStage(id);

		if (currentStage != null)
		{
			// Actually create and position the sprites.
			var event:ScriptEvent = new ScriptEvent(ScriptEvent.CREATE, false);
			ScriptEventDispatcher.callEvent(currentStage, event);

			// Apply camera zoom.
			defaultCameraZoom = currentStage.camZoom;

			// Add the stage to the scene.
			this.add(currentStage);
		}
	}

	function initDiscord():Void
	{
		#if discord_rpc
		storyDifficultyText = difficultyString();
		iconRPC = currentSong.player2;

		// To avoid having duplicate images in Discord assets
		switch (iconRPC)
		{
			case 'senpai-angry':
				iconRPC = 'senpai';
			case 'monster-christmas':
				iconRPC = 'monster';
			case 'mom-car':
				iconRPC = 'mom';
		}

		// String that contains the mode defined here so it isn't necessary to call changePresence for each mode
		detailsText = isStoryMode ? "Story Mode: Week " + storyWeek : "Freeplay";
		detailsPausedText = "Paused - " + detailsText;

		// Updating Discord Rich Presence.
		DiscordClient.changePresence(detailsText, currentSong.song + " (" + storyDifficultyText + ")", iconRPC);
		#end
	}

	function schoolIntro(?dialogueBox:DialogueBox):Void
	{
		var black:FlxSprite = new FlxSprite(-100, -100).makeGraphic(FlxG.width * 2, FlxG.height * 2, FlxColor.BLACK);
		black.scrollFactor.set();
		add(black);

		var red:FlxSprite = new FlxSprite(-100, -100).makeGraphic(FlxG.width * 2, FlxG.height * 2, 0xFFff1b31);
		red.scrollFactor.set();

		var senpaiEvil:FlxSprite = new FlxSprite();
		senpaiEvil.frames = Paths.getSparrowAtlas('weeb/senpaiCrazy');
		senpaiEvil.animation.addByPrefix('idle', 'Senpai Pre Explosion', 24, false);
		senpaiEvil.setGraphicSize(Std.int(senpaiEvil.width * Constants.PIXEL_ART_SCALE));
		senpaiEvil.scrollFactor.set();
		senpaiEvil.updateHitbox();
		senpaiEvil.screenCenter();
		senpaiEvil.x += senpaiEvil.width / 5;

		if (currentSong.song.toLowerCase() == 'roses' || currentSong.song.toLowerCase() == 'thorns')
		{
			remove(black);

			if (currentSong.song.toLowerCase() == 'thorns')
			{
				add(red);
				camHUD.visible = false;
			}
			else
				FlxG.sound.play(Paths.sound('ANGRY'));
			// moved senpai angry noise in here to clean up cutscene switch case lol
		}

		new FlxTimer().start(0.3, function(tmr:FlxTimer)
		{
			black.alpha -= 0.15;

			if (black.alpha > 0)
				tmr.reset(0.3);
			else
			{
				if (dialogueBox != null)
				{
					isInCutscene = true;

					if (currentSong.song.toLowerCase() == 'thorns')
					{
						add(senpaiEvil);
						senpaiEvil.alpha = 0;
						new FlxTimer().start(0.3, function(swagTimer:FlxTimer)
						{
							senpaiEvil.alpha += 0.15;
							if (senpaiEvil.alpha < 1)
								swagTimer.reset();
							else
							{
								senpaiEvil.animation.play('idle');
								FlxG.sound.play(Paths.sound('Senpai_Dies'), 1, false, null, true, function()
								{
									remove(senpaiEvil);
									remove(red);
									FlxG.camera.fade(FlxColor.WHITE, 0.01, true, function()
									{
										add(dialogueBox);
										camHUD.visible = true;
									}, true);
								});
								new FlxTimer().start(3.2, function(deadTime:FlxTimer)
								{
									FlxG.camera.fade(FlxColor.WHITE, 1.6, false);
								});
							}
						});
					}
					else
						add(dialogueBox);
				}
				else
					startCountdown();

				remove(black);
			}
		});
	}

	function startSong():Void
	{
		dispatchEvent(new ScriptEvent(ScriptEvent.SONG_START));

		startingSong = false;

		previousFrameTime = FlxG.game.ticks;

		if (!isGamePaused)
		{
			// if (FlxG.sound.music != null)
			// FlxG.sound.music.play(true);
			// else
			FlxG.sound.playMusic(Paths.inst(currentSong.song), 1, false);
		}

		FlxG.sound.music.onComplete = endSong;
		vocals.play();

		#if discord_rpc
		// Song duration in a float, useful for the time left feature
		songLength = FlxG.sound.music.length;

		// Updating Discord Rich Presence (with Time Left)
		DiscordClient.changePresence(detailsText, currentSong.song + " (" + storyDifficultyText + ")", iconRPC, true, songLength);
		#end
	}

	private function generateSong():Void
	{
		// FlxG.log.add(ChartParser.parse());

		Conductor.bpm = currentSong.bpm;

		currentSong.song = currentSong.song;

		if (currentSong.needsVoices)
			vocals = new VoicesGroup(currentSong.song, currentSong.voiceList);
		else
			vocals = new VoicesGroup(currentSong.song, null, false);

		vocals.members[0].onComplete = function()
		{
			vocalsFinished = true;
		};

		activeNotes = new FlxTypedGroup<Note>();
		activeNotes.zIndex = 1000;
		add(activeNotes);

		regenNoteData();

		generatedMusic = true;
	}

	function regenNoteData():Void
	{
		// make unspawn notes shit def empty
		inactiveNotes = [];

		activeNotes.forEach(function(nt)
		{
			nt.followsTime = false;
			FlxTween.tween(nt, {y: FlxG.height + nt.y}, 0.5, {
				ease: FlxEase.expoIn,
				onComplete: function(twn)
				{
					nt.kill();
					activeNotes.remove(nt, true);
					nt.destroy();
				}
			});
		});

		var noteData:Array<SwagSection>;

		// NEW SHIT
		noteData = SongLoad.getSong();

		for (section in noteData)
		{
			for (songNotes in section.sectionNotes)
			{
				var daStrumTime:Float = songNotes.strumTime;
				var daNoteData:Int = Std.int(songNotes.noteData % 4);

				var gottaHitNote:Bool = section.mustHitSection;

				if (songNotes.highStakes) // noteData > 3
					gottaHitNote = !section.mustHitSection;

				var oldNote:Note;
				if (inactiveNotes.length > 0)
					oldNote = inactiveNotes[Std.int(inactiveNotes.length - 1)];
				else
					oldNote = null;

				var strumlineStyle:StrumlineStyle = NORMAL;

				// TODO: Put this in the chart or something?
				switch (currentStageId)
				{
					case 'school':
						strumlineStyle = PIXEL;
					case 'schoolEvil':
						strumlineStyle = PIXEL;
				}

				var swagNote:Note = new Note(daStrumTime, daNoteData, oldNote, false, strumlineStyle);
				// swagNote.data = songNotes;
				swagNote.data.sustainLength = songNotes.sustainLength;
				swagNote.data.noteKind = songNotes.noteKind;
				swagNote.scrollFactor.set(0, 0);

				var susLength:Float = swagNote.data.sustainLength;

				susLength = susLength / Conductor.stepCrochet;
				inactiveNotes.push(swagNote);

				for (susNote in 0...Math.round(susLength))
				{
					oldNote = inactiveNotes[Std.int(inactiveNotes.length - 1)];

					var sustainNote:Note = new Note(daStrumTime + (Conductor.stepCrochet * susNote) + Conductor.stepCrochet, daNoteData, oldNote, true,
						strumlineStyle);
					sustainNote.data.noteKind = songNotes.noteKind;
					sustainNote.scrollFactor.set();
					inactiveNotes.push(sustainNote);

					sustainNote.mustPress = gottaHitNote;

					if (sustainNote.mustPress)
						sustainNote.x += FlxG.width / 2; // general offset
				}

				swagNote.mustPress = gottaHitNote;

				if (swagNote.mustPress)
					swagNote.x += FlxG.width / 2; // general offset
			}
		}

		inactiveNotes.sort(function(a:Note, b:Note):Int
		{
			return SortUtil.byStrumtime(FlxSort.ASCENDING, a, b);
		});
	}

	function tweenCamIn():Void
	{
		FlxTween.tween(FlxG.camera, {zoom: 1.3 * FlxCamera.defaultZoom}, (Conductor.stepCrochet * 4 / 1000), {ease: FlxEase.elasticInOut});
	}

	#if discord_rpc
	override public function onFocus():Void
	{
		if (health > 0 && !paused && FlxG.autoPause)
		{
			if (Conductor.songPosition > 0.0)
				DiscordClient.changePresence(detailsText, currentSong.song + " (" + storyDifficultyText + ")", iconRPC, true,
					songLength - Conductor.songPosition);
			else
				DiscordClient.changePresence(detailsText, currentSong.song + " (" + storyDifficultyText + ")", iconRPC);
		}

		super.onFocus();
	}

	override public function onFocusLost():Void
	{
		if (health > 0 && !paused && FlxG.autoPause)
			DiscordClient.changePresence(detailsPausedText, currentSong.song + " (" + storyDifficultyText + ")", iconRPC);

		super.onFocusLost();
	}
	#end

	function resyncVocals():Void
	{
		if (_exiting)
			return;

		vocals.pause();
		FlxG.sound.music.play();
		Conductor.songPosition = FlxG.sound.music.time + Conductor.offset;

		if (vocalsFinished)
			return;

		vocals.time = FlxG.sound.music.time;
		vocals.play();
	}

	override public function update(elapsed:Float)
	{
		super.update(elapsed);

		if (FlxG.keys.justPressed.U)
		{
			openSubState(new StageOffsetSubstate());
		}

		updateHealthBar();
		updateScoreText();

		if (needsReset)
		{
			dispatchEvent(new ScriptEvent(ScriptEvent.SONG_RETRY));

			resetCamera();

			persistentUpdate = true;
			persistentDraw = true;

			startingSong = true;

			FlxG.sound.music.pause();
			vocals.pause();

			FlxG.sound.music.time = 0;

			currentStage.resetStage();

			regenNoteData(); // loads the note data from start
			health = 1;
			songScore = 0;
			combo = 0;
			Countdown.performCountdown(currentStageId.startsWith('school'));

			needsReset = false;
		}

		#if !debug
		perfectMode = false;
		#else
		if (FlxG.keys.justPressed.H)
			camHUD.visible = !camHUD.visible;
		#end

		// do this BEFORE super.update() so songPosition is accurate
		if (startingSong)
		{
			if (isInCountdown)
			{
				Conductor.songPosition += elapsed * 1000;
				if (Conductor.songPosition >= 0)
					startSong();
			}
		}
		else
		{
			if (Paths.SOUND_EXT == 'mp3')
				Conductor.offset = -13; // DO NOT FORGET TO REMOVE THE HARDCODE! WHEN I MAKE BETTER OFFSET SYSTEM!

			Conductor.songPosition = FlxG.sound.music.time + Conductor.offset; // 20 is THE MILLISECONDS??

			if (!isGamePaused)
			{
				songTime += FlxG.game.ticks - previousFrameTime;
				previousFrameTime = FlxG.game.ticks;

				// Interpolation type beat
				if (Conductor.lastSongPos != Conductor.songPosition)
				{
					songTime = (songTime + Conductor.songPosition) / 2;
					Conductor.lastSongPos = Conductor.songPosition;
				}
			}
		}

		var androidPause:Bool = false;

		#if android
		androidPause = FlxG.android.justPressed.BACK;
		#end

		if ((controls.PAUSE || androidPause) && isInCountdown && mayPauseGame)
		{
			var event = new PauseScriptEvent(FlxG.random.bool(1 / 1000));

			dispatchEvent(event);

			if (!event.eventCanceled)
			{
				// Pause updates while the substate is open, preventing the game state from advancing.
				persistentUpdate = false;
				// Enable drawing while the substate is open, allowing the game state to be shown behind the pause menu.
				persistentDraw = true;

				// There is a 1/1000 change to use a special pause menu.
				// This prevents the player from resuming, but that's the point.
				// It's a reference to Gitaroo Man, which doesn't let you pause the game.
				if (event.gitaroo)
				{
					FlxG.switchState(new GitarooPause());
				}
				else
				{
					var boyfriendPos = currentStage.getBoyfriend().getScreenPosition();
					var pauseSubState = new PauseSubState(boyfriendPos.x, boyfriendPos.y);
					openSubState(pauseSubState);
					pauseSubState.camera = camHUD;
					boyfriendPos.put();
				}

				#if discord_rpc
				DiscordClient.changePresence(detailsPausedText, currentSong.song + " (" + storyDifficultyText + ")", iconRPC);
				#end
			}
		}

		#if debug
		// 1: End the song immediately.
		if (FlxG.keys.justPressed.ONE)
			endSong();

		// 2: Gain 10% health.
		if (FlxG.keys.justPressed.TWO)
			health += 0.1 * 2.0;

		// 3: Lose 5% health.
		if (FlxG.keys.justPressed.THREE)
			health -= 0.05 * 2.0;
		#end

		// 7: Move to the charter.
		if (FlxG.keys.justPressed.SEVEN)
		{
			FlxG.switchState(new ChartingState());

			#if discord_rpc
			DiscordClient.changePresence("Chart Editor", null, null, true);
			#end
		}

		// 8: Move to the offset editor.
		if (FlxG.keys.justPressed.EIGHT)
			FlxG.switchState(new funkin.ui.animDebugShit.DebugBoundingState());

		// 9: Toggle the old icon.
		if (FlxG.keys.justPressed.NINE)
			iconP1.toggleOldIcon();

		#if debug
		// PAGEUP: Skip forward one section.
		// SHIFT+PAGEUP: Skip forward ten sections.
		if (FlxG.keys.justPressed.PAGEUP)
			changeSection(FlxG.keys.pressed.SHIFT ? 10 : 1);
		// PAGEDOWN: Skip backward one section. Doesn't replace notes.
		// SHIFT+PAGEDOWN: Skip backward ten sections.
		if (FlxG.keys.justPressed.PAGEDOWN)
			changeSection(FlxG.keys.pressed.SHIFT ? -10 : -1);
		#end

		if (health > 2.0)
			health = 2.0;
		if (health < 0.0)
			health = 0.0;

		if (camZooming && subState == null)
		{
			FlxG.camera.zoom = FlxMath.lerp(defaultCameraZoom, FlxG.camera.zoom, 0.95);
			camHUD.zoom = FlxMath.lerp(1 * FlxCamera.defaultZoom, camHUD.zoom, 0.95);
		}

		FlxG.watch.addQuick("beatShit", curBeat);
		FlxG.watch.addQuick("stepShit", curStep);
		if (currentStage != null)
		{
			FlxG.watch.addQuick("bfAnim", currentStage.getBoyfriend().getCurrentAnimation());
		}
		FlxG.watch.addQuick("songPos", Conductor.songPosition);

		if (currentSong.song == 'Fresh')
		{
			switch (curBeat)
			{
				case 16:
					camZooming = true;
					gfSpeed = 2;
				case 48:
					gfSpeed = 1;
				case 80:
					gfSpeed = 2;
				case 112:
					gfSpeed = 1;
			}
		}

		if (!isInCutscene && !_exiting)
		{
			// RESET = Quick Game Over Screen
			if (controls.RESET)
			{
				health = 0;
				trace("RESET = True");
			}

			#if CAN_CHEAT // brandon's a pussy
			if (controls.CHEAT)
			{
				health += 1;
				trace("User is cheating!");
			}
			#end

			if (health <= 0 && !isPracticeMode)
			{
				vocals.pause();
				FlxG.sound.music.pause();

				deathCounter += 1;

				dispatchEvent(new ScriptEvent(ScriptEvent.GAME_OVER));

				// Disable updates, preventing animations in the background from playing.
				persistentUpdate = false;
				#if debug
				if (FlxG.keys.pressed.THREE)
				{
					// TODO: Change the key or delete this?
					// In debug builds, pressing 3 to kill the player makes the background transparent.
					persistentDraw = true;
				}
				else
				{
				#end
					persistentDraw = false;
				#if debug
				}
				#end

				var gameOverSubstate = new GameOverSubstate();
				openSubState(gameOverSubstate);

				#if discord_rpc
				// Game Over doesn't get his own variable because it's only used here
				DiscordClient.changePresence("Game Over - " + detailsText, currentSong.song + " (" + storyDifficultyText + ")", iconRPC);
				#end
			}
		}

		while (inactiveNotes[0] != null && inactiveNotes[0].data.strumTime - Conductor.songPosition < 1800 / SongLoad.getSpeed())
		{
			var dunceNote:Note = inactiveNotes[0];
			activeNotes.add(dunceNote);

			inactiveNotes.shift();
		}

		if (generatedMusic && playerStrumline != null)
		{
			activeNotes.forEachAlive(function(daNote:Note)
			{
				if ((PreferencesMenu.getPref('downscroll') && daNote.y < -daNote.height)
					|| (!PreferencesMenu.getPref('downscroll') && daNote.y > FlxG.height))
				{
					daNote.active = false;
					daNote.visible = false;
				}
				else
				{
					daNote.visible = true;
					daNote.active = true;
				}

				var strumLineMid = playerStrumline.y + Note.swagWidth / 2;

				if (daNote.followsTime)
					daNote.y = (Conductor.songPosition - daNote.data.strumTime) * (0.45 * FlxMath.roundDecimal(SongLoad.getSpeed(),
						2) * daNote.noteSpeedMulti);

				if (PreferencesMenu.getPref('downscroll'))
				{
					daNote.y += playerStrumline.y;
					if (daNote.isSustainNote)
					{
						if (daNote.animation.curAnim.name.endsWith("end") && daNote.prevNote != null)
							daNote.y += daNote.prevNote.height;
						else
							daNote.y += daNote.height / 2;

						if ((!daNote.mustPress || (daNote.wasGoodHit || (daNote.prevNote.wasGoodHit && !daNote.canBeHit)))
							&& daNote.y - daNote.offset.y * daNote.scale.y + daNote.height >= strumLineMid)
						{
							applyClipRect(daNote);
						}
					}
				}
				else
				{
					if (daNote.followsTime)
						daNote.y = playerStrumline.y - daNote.y;
					if (daNote.isSustainNote
						&& (!daNote.mustPress || (daNote.wasGoodHit || (daNote.prevNote.wasGoodHit && !daNote.canBeHit)))
						&& daNote.y + daNote.offset.y * daNote.scale.y <= strumLineMid)
					{
						applyClipRect(daNote);
					}
				}

				if (!daNote.mustPress && daNote.wasGoodHit && !daNote.tooLate)
				{
					if (currentSong.song != 'Tutorial')
						camZooming = true;

					var event:NoteScriptEvent = new NoteScriptEvent(ScriptEvent.NOTE_HIT, daNote, combo, true);
					dispatchEvent(event);

					// Calling event.cancelEvent() in a module should force the CPU to miss the note.
					// This is useful for cool shit, including but not limited to:
					// - Making the AI ignore notes which are hazardous.
					// - Making the AI miss notes on purpose for aesthetic reasons.
					if (event.eventCanceled)
					{
						daNote.tooLate = true;
					}
					else
					{
						// Volume of DAD.
						if (currentSong.needsVoices)
							vocals.volume = 1;
					}
				}

				// WIP interpolation shit? Need to fix the pause issue
				// daNote.y = (strumLine.y - (songTime - daNote.strumTime) * (0.45 * SONG.speed[SongLoad.curDiff]));

				// removing this so whether the note misses or not is entirely up to Note class
				// var noteMiss:Bool = daNote.y < -daNote.height;

				// if (PreferencesMenu.getPref('downscroll'))
				// noteMiss = daNote.y > FlxG.height;

				if (daNote.isSustainNote && daNote.wasGoodHit)
				{
					if ((!PreferencesMenu.getPref('downscroll') && daNote.y < -daNote.height)
						|| (PreferencesMenu.getPref('downscroll') && daNote.y > FlxG.height))
					{
						daNote.active = false;
						daNote.visible = false;

						daNote.kill();
						activeNotes.remove(daNote, true);
						daNote.destroy();
					}
				}
				if (daNote.wasGoodHit)
				{
					daNote.active = false;
					daNote.visible = false;

					daNote.kill();
					activeNotes.remove(daNote, true);
					daNote.destroy();
				}

				if (daNote.tooLate)
				{
					noteMiss(daNote);
				}
			});
		}

		if (!isInCutscene)
			keyShit(true);
	}

	function applyClipRect(daNote:Note):Void
	{
		// clipRect is applied to graphic itself so use frame Heights
		var swagRect:FlxRect = new FlxRect(0, 0, daNote.frameWidth, daNote.frameHeight);
		var strumLineMid = playerStrumline.y + Note.swagWidth / 2;

		if (PreferencesMenu.getPref('downscroll'))
		{
			swagRect.height = (strumLineMid - daNote.y) / daNote.scale.y;
			swagRect.y = daNote.frameHeight - swagRect.height;
		}
		else
		{
			swagRect.y = (strumLineMid - daNote.y) / daNote.scale.y;
			swagRect.height -= swagRect.y;
		}

		daNote.clipRect = swagRect;
	}

	#if debug
	/**
	 * Jumps forward or backward a number of sections in the song.
	 * Accounts for BPM changes, does not prevent death from skipped notes.
	 * @param sec 
	 */
	function changeSection(sec:Int):Void
	{
		FlxG.sound.music.pause();

		var daBPM:Float = currentSong.bpm;
		var daPos:Float = 0;
		for (i in 0...(Std.int(curStep / 16 + sec)))
		{
			if (SongLoad.getSong()[i].changeBPM)
			{
				daBPM = SongLoad.getSong()[i].bpm;
			}
			daPos += 4 * (1000 * 60 / daBPM);
		}
		Conductor.songPosition = FlxG.sound.music.time = daPos;
		Conductor.songPosition += Conductor.offset;
		updateCurStep();
		resyncVocals();
	}
	#end

	function endSong():Void
	{
		dispatchEvent(new ScriptEvent(ScriptEvent.SONG_END));

		seenCutscene = false;
		deathCounter = 0;
		mayPauseGame = false;
		FlxG.sound.music.volume = 0;
		vocals.volume = 0;
		if (currentSong.validScore)
		{
			Highscore.saveScore(currentSong.song, songScore, storyDifficulty);
		}

		if (isStoryMode)
		{
			campaignScore += songScore;

			storyPlaylist.remove(storyPlaylist[0]);

			if (storyPlaylist.length <= 0)
			{
				FlxG.sound.playMusic(Paths.music('freakyMenu'));

				transIn = FlxTransitionableState.defaultTransIn;
				transOut = FlxTransitionableState.defaultTransOut;

				switch (storyWeek)
				{
					case 7:
						FlxG.switchState(new VideoState());
					default:
						FlxG.switchState(new StoryMenuState());
				}

				// if ()
				StoryMenuState.weekUnlocked[Std.int(Math.min(storyWeek + 1, StoryMenuState.weekUnlocked.length - 1))] = true;

				if (currentSong.validScore)
				{
					NGio.unlockMedal(60961);
					Highscore.saveWeekScore(storyWeek, campaignScore, storyDifficulty);
				}

				FlxG.save.data.weekUnlocked = StoryMenuState.weekUnlocked;
				FlxG.save.flush();
			}
			else
			{
				var difficulty:String = "";

				if (storyDifficulty == 0)
					difficulty = '-easy';

				if (storyDifficulty == 2)
					difficulty = '-hard';

				trace('LOADING NEXT SONG');
				trace(storyPlaylist[0].toLowerCase() + difficulty);

				FlxTransitionableState.skipNextTransIn = true;
				FlxTransitionableState.skipNextTransOut = true;

				FlxG.sound.music.stop();
				vocals.stop();

				if (currentSong.song.toLowerCase() == 'eggnog')
				{
					var blackShit:FlxSprite = new FlxSprite(-FlxG.width * FlxG.camera.zoom,
						-FlxG.height * FlxG.camera.zoom).makeGraphic(FlxG.width * 3, FlxG.height * 3, FlxColor.BLACK);
					blackShit.scrollFactor.set();
					add(blackShit);
					camHUD.visible = false;
					isInCutscene = true;

					FlxG.sound.play(Paths.sound('Lights_Shut_off'), function()
					{
						// no camFollow so it centers on horror tree
						currentSong = SongLoad.loadFromJson(storyPlaylist[0].toLowerCase() + difficulty, storyPlaylist[0]);
						LoadingState.loadAndSwitchState(new PlayState());
					});
				}
				else
				{
					previousCameraFollowPoint = cameraFollowPoint;

					currentSong = SongLoad.loadFromJson(storyPlaylist[0].toLowerCase() + difficulty, storyPlaylist[0]);
					LoadingState.loadAndSwitchState(new PlayState());
				}
			}
		}
		else
		{
			trace('WENT BACK TO FREEPLAY??');
			// unloadAssets();
			FlxG.switchState(new FreeplayState());
		}
	}

	// gives score and pops up rating
	private function popUpScore(strumtime:Float, daNote:Note):Void
	{
		var noteDiff:Float = Math.abs(strumtime - Conductor.songPosition);
		// boyfriend.playAnimation('hey');
		vocals.volume = 1;

		var isSick:Bool = false;
		var score = Scoring.scoreNote(noteDiff, PBOT1);
		var daRating = Scoring.judgeNote(noteDiff, PBOT1);
		var healthMulti:Float = daNote.lowStakes ? 0.002 : 0.033;

		if (noteDiff > Note.HIT_WINDOW * Note.BAD_THRESHOLD)
		{
			healthMulti *= 0; // no health on shit note
		}
		else if (noteDiff > Note.HIT_WINDOW * Note.GOOD_THRESHOLD)
		{
			healthMulti *= 0.2;
		}
		else if (noteDiff > Note.HIT_WINDOW * Note.SICK_THRESHOLD)
		{
			healthMulti *= 0.78;
		}
		else
			isSick = true;

		health += healthMulti;

		if (isSick)
		{
			var noteSplash:NoteSplash = grpNoteSplashes.recycle(NoteSplash);
			noteSplash.setupNoteSplash(daNote.x, daNote.y, daNote.data.noteData);
			// new NoteSplash(daNote.x, daNote.y, daNote.noteData);
			grpNoteSplashes.add(noteSplash);
		}

		// Only add the score if you're not on practice mode
		if (!isPracticeMode)
			songScore += score;

		comboPopUps.displayRating(daRating);

		if (combo >= 10 || combo == 0)
			comboPopUps.displayCombo(combo);
	}

	function controlCamera()
	{
		if (currentStage == null)
			return;

		var isFocusedOnDad = cameraFollowPoint.x == currentStage.getDad().cameraFocusPoint.x;
		var isFocusedOnBF = cameraFollowPoint.x == currentStage.getBoyfriend().cameraFocusPoint.x;

		if (cameraRightSide && !isFocusedOnBF)
		{
			// Focus the camera on the player.
			cameraFollowPoint.setPosition(currentStage.getBoyfriend().cameraFocusPoint.x, currentStage.getBoyfriend().cameraFocusPoint.y);

			// TODO: Un-hardcode this.
			if (currentSong.song.toLowerCase() == 'tutorial')
				FlxTween.tween(FlxG.camera, {zoom: 1 * FlxCamera.defaultZoom}, (Conductor.stepCrochet * 4 / 1000), {ease: FlxEase.elasticInOut});
		}
		else if (!cameraRightSide && !isFocusedOnDad)
		{
			// Focus the camera on the opponent.
			cameraFollowPoint.setPosition(currentStage.getDad().cameraFocusPoint.x, currentStage.getDad().cameraFocusPoint.y);

			// TODO: Un-hardcode this stuff.
			if (currentStage.getDad().characterId == 'mom')
			{
				vocals.volume = 1;
			}

			if (currentSong.song.toLowerCase() == 'tutorial')
				tweenCamIn();
		}
	}

	public function keyShit(test:Bool):Void
	{
		if (PlayState.instance == null)
			return;

		// control arrays, order L D R U
		var holdArray:Array<Bool> = [controls.NOTE_LEFT, controls.NOTE_DOWN, controls.NOTE_UP, controls.NOTE_RIGHT];
		var pressArray:Array<Bool> = [
			controls.NOTE_LEFT_P,
			controls.NOTE_DOWN_P,
			controls.NOTE_UP_P,
			controls.NOTE_RIGHT_P
		];
		var releaseArray:Array<Bool> = [
			controls.NOTE_LEFT_R,
			controls.NOTE_DOWN_R,
			controls.NOTE_UP_R,
			controls.NOTE_RIGHT_R
		];
		// HOLDS, check for sustain notes
		if (holdArray.contains(true) && PlayState.instance.generatedMusic)
		{
			PlayState.instance.activeNotes.forEachAlive(function(daNote:Note)
			{
				if (daNote.isSustainNote && daNote.canBeHit && daNote.mustPress && holdArray[daNote.data.noteData])
					PlayState.instance.goodNoteHit(daNote);
			});
		}

		// PRESSES, check for note hits
		if (pressArray.contains(true) && PlayState.instance.generatedMusic)
		{
			Haptic.vibrate(100, 100);

			PlayState.instance.currentStage.getBoyfriend().holdTimer = 0;

			var possibleNotes:Array<Note> = []; // notes that can be hit
			var directionList:Array<Int> = []; // directions that can be hit
			var dumbNotes:Array<Note> = []; // notes to kill later

			PlayState.instance.activeNotes.forEachAlive(function(daNote:Note)
			{
				if (daNote.canBeHit && daNote.mustPress && !daNote.tooLate && !daNote.wasGoodHit)
				{
					if (directionList.contains(daNote.data.noteData))
					{
						for (coolNote in possibleNotes)
						{
							if (coolNote.data.noteData == daNote.data.noteData
								&& Math.abs(daNote.data.strumTime - coolNote.data.strumTime) < 10)
							{ // if it's the same note twice at < 10ms distance, just delete it
								// EXCEPT u cant delete it in this loop cuz it fucks with the collection lol
								dumbNotes.push(daNote);
								break;
							}
							else if (coolNote.data.noteData == daNote.data.noteData && daNote.data.strumTime < coolNote.data.strumTime)
							{ // if daNote is earlier than existing note (coolNote), replace
								possibleNotes.remove(coolNote);
								possibleNotes.push(daNote);
								break;
							}
						}
					}
					else
					{
						possibleNotes.push(daNote);
						directionList.push(daNote.data.noteData);
					}
				}
			});

			for (note in dumbNotes)
			{
				FlxG.log.add("killing dumb ass note at " + note.data.strumTime);
				note.kill();
				PlayState.instance.activeNotes.remove(note, true);
				note.destroy();
			}

			possibleNotes.sort((a, b) -> Std.int(a.data.strumTime - b.data.strumTime));

			if (PlayState.instance.perfectMode)
				PlayState.instance.goodNoteHit(possibleNotes[0]);
			else if (possibleNotes.length > 0)
			{
				for (shit in 0...pressArray.length)
				{ // if a direction is hit that shouldn't be
					if (pressArray[shit] && !directionList.contains(shit))
						PlayState.instance.ghostNoteMiss(shit);
				}
				for (coolNote in possibleNotes)
				{
					if (pressArray[coolNote.data.noteData])
						PlayState.instance.goodNoteHit(coolNote);
				}
			}
			else
			{
				// HNGGG I really want to add an option for ghost tapping
				for (shit in 0...pressArray.length)
					if (pressArray[shit])
						PlayState.instance.ghostNoteMiss(shit, false);
			}
		}

		if (PlayState.instance == null || PlayState.instance.currentStage == null)
			return;

		for (keyId => isPressed in pressArray)
		{
			if (playerStrumline == null)
				continue;
			var arrow:StrumlineArrow = PlayState.instance.playerStrumline.getArrow(keyId);

			if (isPressed && arrow.animation.curAnim.name != 'confirm')
			{
				arrow.playAnimation('pressed');
			}
			if (!holdArray[keyId])
			{
				arrow.playAnimation('static');
			}
		}
	}

	/**
	 * Called when a player presses a key with no note present.
	 * Scripts can modify the amount of health/score lost, whether player animations or sounds are used,
	 * or even cancel the event entirely.
	 * 
	 * @param direction 
	 * @param hasPossibleNotes 
	 */
	function ghostNoteMiss(direction:NoteType = 1, hasPossibleNotes:Bool = true):Void
	{
		var event:GhostMissNoteScriptEvent = new GhostMissNoteScriptEvent(direction, // Direction missed in.
			hasPossibleNotes, // Whether there was a note you could have hit.
			- 0.035 * 2, // How much health to add (negative).
			- 10 // Amount of score to add (negative).
		);
		dispatchEvent(event);

		// Calling event.cancelEvent() skips animations and penalties. Neat!
		if (event.eventCanceled)
			return;

		health += event.healthChange;

		if (!isPracticeMode)
			songScore += event.scoreChange;

		if (event.playSound)
		{
			vocals.volume = 0;
			FlxG.sound.play(Paths.soundRandom('missnote', 1, 3), FlxG.random.float(0.1, 0.2));
		}
	}

	function noteMiss(note:Note):Void
	{
		var event:NoteScriptEvent = new NoteScriptEvent(ScriptEvent.NOTE_MISS, note, combo, true);
		dispatchEvent(event);
		// Calling event.cancelEvent() skips all the other logic! Neat!
		if (event.eventCanceled)
			return;

		health -= 0.0775;
		if (!isPracticeMode)
			songScore -= 10;
		vocals.volume = 0;

		if (combo != 0)
		{
			combo = comboPopUps.displayCombo(0);
		}

		note.active = false;
		note.visible = false;

		note.kill();
		activeNotes.remove(note, true);
		note.destroy();
	}

	function goodNoteHit(note:Note):Void
	{
		if (!note.wasGoodHit)
		{
			var event:NoteScriptEvent = new NoteScriptEvent(ScriptEvent.NOTE_HIT, note, combo + 1, true);
			dispatchEvent(event);

			// Calling event.cancelEvent() skips all the other logic! Neat!
			if (event.eventCanceled)
				return;

			if (!note.isSustainNote)
			{
				combo += 1;
				popUpScore(note.data.strumTime, note);
			}

			playerStrumline.getArrow(note.data.noteData).playAnimation('confirm', true);

			note.wasGoodHit = true;
			vocals.volume = 1;

			if (!note.isSustainNote)
			{
				note.kill();
				activeNotes.remove(note, true);
				note.destroy();
			}
		}
	}

	override function stepHit():Bool
	{
		if (SongLoad.songData == null)
			return false;

		// super.stepHit() returns false if a module cancelled the event.
		if (!super.stepHit())
			return false;

		if (Math.abs(FlxG.sound.music.time - (Conductor.songPosition - Conductor.offset)) > 20
			|| Math.abs(vocals.checkSyncError(Conductor.songPosition - Conductor.offset)) > 20)
		{
			resyncVocals();
		}

		iconP1.onStepHit(curStep);
		iconP2.onStepHit(curStep);

		return true;
	}

	override function beatHit():Bool
	{
		// super.beatHit() returns false if a module cancelled the event.
		if (!super.beatHit())
			return false;

		if (generatedMusic)
		{
			activeNotes.sort(SortUtil.byStrumtime, FlxSort.DESCENDING);
		}

		// Moving this code into the `beatHit` function allows for scripts and modules to control the camera better.
		if (generatedMusic && SongLoad.getSong()[Std.int(curStep / 16)] != null)
		{
			cameraRightSide = SongLoad.getSong()[Std.int(curStep / 16)].mustHitSection;
			controlCamera();
		}

		if (SongLoad.getSong()[Math.floor(curStep / 16)] != null)
		{
			if (SongLoad.getSong()[Math.floor(curStep / 16)].changeBPM)
			{
				Conductor.bpm = SongLoad.getSong()[Math.floor(curStep / 16)].bpm;
				FlxG.log.add('CHANGED BPM!');
			}
		}

		// HARDCODING FOR MILF ZOOMS!

		if (PreferencesMenu.getPref('camera-zoom'))
		{
			if (currentSong.song.toLowerCase() == 'milf' && curBeat >= 168 && curBeat < 200 && camZooming && FlxG.camera.zoom < 1.35)
			{
				FlxG.camera.zoom += 0.015 * FlxCamera.defaultZoom;
				camHUD.zoom += 0.03;
			}

			if (camZooming && FlxG.camera.zoom < (1.35 * FlxCamera.defaultZoom) && curBeat % 4 == 0)
			{
				FlxG.camera.zoom += 0.015 * FlxCamera.defaultZoom;
				camHUD.zoom += 0.03;
			}
		}

		// That combo counter that got spoiled that one time.
		// Comes with NEAT visual and audio effects.

		// bruh this var is bonkers i thot it was a function lmfaooo

		// Break up into individual lines to aid debugging.
		var shouldShowComboText:Bool = (curBeat % 8 == 7);
		var daSection = SongLoad.getSong()[Std.int(curStep / 16)];
		shouldShowComboText = shouldShowComboText && (daSection != null && daSection.mustHitSection);
		shouldShowComboText = shouldShowComboText && (combo > 5);

		var daNextSection = SongLoad.getSong()[Std.int(curStep / 16) + 1];
		var isEndOfSong = SongLoad.getSong().length < Std.int(curStep / 16);
		shouldShowComboText = shouldShowComboText && (isEndOfSong || (daNextSection != null && !daNextSection.mustHitSection));

		if (shouldShowComboText)
		{
			var animShit:ComboCounter = new ComboCounter(-100, 300, combo);
			animShit.scrollFactor.set(0.6, 0.6);
			add(animShit);

			var frameShit:Float = (1 / 24) * 2; // equals 2 frames in the animation

			new FlxTimer().start(((Conductor.crochet / 1000) * 1.25) - frameShit, function(tmr)
			{
				animShit.forceFinish();
			});
		}

		// Make the characters dance on the beat
		danceOnBeat();

		return true;
	}

	/**
	 * Handles characters dancing to the beat of the current song.
	 * 
	 * TODO: Move some of this logic into `Bopper.hx`
	 */
	public function danceOnBeat()
	{
		if (currentStage == null)
			return;

		// TODO: Move this to a song event.
		if (curBeat % 8 == 7 && currentSong.song == 'Bopeebo')
		{
			currentStage.getBoyfriend().playAnimation('hey', true);
		}

		// TODO: Move this to a song event.
		if (curBeat % 16 == 15
			&& currentSong.song == 'Tutorial'
			&& currentStage.getDad().characterId == 'gf'
			&& curBeat > 16
			&& curBeat < 48)
		{
			currentStage.getBoyfriend().playAnimation('hey', true);
			currentStage.getDad().playAnimation('cheer', true);
		}
	}

	/**
	 * Constructs the strumlines for each player.
	 */
	function buildStrumlines():Void
	{
		var strumlineStyle:StrumlineStyle = NORMAL;

		// TODO: Put this in the chart or something?
		switch (currentStageId)
		{
			case 'school':
				strumlineStyle = PIXEL;
			case 'schoolEvil':
				strumlineStyle = PIXEL;
		}

		var strumlineYPos = Strumline.getYPos();

		playerStrumline = new Strumline(0, strumlineStyle, 4);
		playerStrumline.x = 50 + FlxG.width / 2;
		playerStrumline.y = strumlineYPos;
		// Set the z-index so they don't appear in front of notes.
		playerStrumline.zIndex = 100;
		add(playerStrumline);
		playerStrumline.cameras = [camHUD];

		if (!isStoryMode)
		{
			playerStrumline.fadeInArrows();
		}

		enemyStrumline = new Strumline(1, strumlineStyle, 4);
		enemyStrumline.x = 50;
		enemyStrumline.y = strumlineYPos;
		// Set the z-index so they don't appear in front of notes.
		enemyStrumline.zIndex = 100;
		add(enemyStrumline);
		enemyStrumline.cameras = [camHUD];

		if (!isStoryMode)
		{
			enemyStrumline.fadeInArrows();
		}

		this.refresh();
	}

	/**
	 * Function called before opening a new substate.
	 * @param subState The substate to open.
	 */
	override function openSubState(subState:FlxSubState)
	{
		// If there is a substate which requires the game to continue,
		// then make this a condition.
		var shouldPause = true;

		if (shouldPause)
		{
			// Pause the music.
			if (FlxG.sound.music != null)
			{
				FlxG.sound.music.pause();
				if (vocals != null)
					vocals.pause();
			}

			// Pause the countdown.
			Countdown.pauseCountdown();
		}

		super.openSubState(subState);
	}

	/**
	 * Function called before closing the current substate.
	 * @param subState 
	 */
	override function closeSubState()
	{
		if (isGamePaused)
		{
			var event:ScriptEvent = new ScriptEvent(ScriptEvent.RESUME, true);

			dispatchEvent(event);

			if (event.eventCanceled)
				return;

			if (FlxG.sound.music != null && !startingSong && !isInCutscene)
				resyncVocals();

			// Resume the countdown.
			Countdown.resumeCountdown();

			#if discord_rpc
			if (startTimer.finished)
				DiscordClient.changePresence(detailsText, currentSong.song + " (" + storyDifficultyText + ")", iconRPC, true,
					songLength - Conductor.songPosition);
			else
				DiscordClient.changePresence(detailsText, currentSong.song + " (" + storyDifficultyText + ")", iconRPC);
			#end
		}

		super.closeSubState();
	}

	/**
	 * Prepares to start the countdown.
	 * Ends any running cutscenes, creates the strumlines, and starts the countdown.
	 */
	function startCountdown():Void
	{
		var result = Countdown.performCountdown(currentStageId.startsWith('school'));
		if (!result)
			return;

		isInCutscene = false;
		camHUD.visible = true;
		talking = false;

		buildStrumlines();
	}

	override function dispatchEvent(event:ScriptEvent):Void
	{
		// ORDER: Module, Stage, Character, Song, Note
		// Modules should get the first chance to cancel the event.

		// super.dispatchEvent(event) dispatches event to module scripts.
		super.dispatchEvent(event);

		// Dispatch event to stage script.
		ScriptEventDispatcher.callEvent(currentStage, event);

		// Dispatch event to character script(s).
		if (currentStage != null)
			currentStage.dispatchToCharacters(event);

		// TODO: Dispatch event to song script
	}

	/**
	 * Updates the position and contents of the score display.
	 */
	function updateScoreText():Void
	{
		// TODO: Add functionality for modules to update the score text.
		scoreText.text = "Score:" + songScore;
	}

	/**
	 * Updates the values of the health bar.
	 */
	function updateHealthBar():Void
	{
		healthLerp = FlxMath.lerp(healthLerp, health, 0.15);
	}

	/**
	 * Resets the camera's zoom level and focus point.
	 */
	public function resetCamera():Void
	{
		FlxG.camera.follow(cameraFollowPoint, LOCKON, 0.04);
		FlxG.camera.targetOffset.set();
		FlxG.camera.zoom = defaultCameraZoom;
		FlxG.camera.focusOn(cameraFollowPoint.getPosition());
	}

	/**
	 * Perform necessary cleanup before leaving the PlayState.
	 */
	function performCleanup()
	{
		// Uncache the song.
		openfl.utils.Assets.cache.clear(Paths.inst(currentSong.song));
		openfl.utils.Assets.cache.clear(Paths.voices(currentSong.song));

		// Remove reference to stage and remove sprites from it to save memory.
		if (currentStage != null)
		{
			remove(currentStage);
			currentStage.kill();
			dispatchEvent(new ScriptEvent(ScriptEvent.DESTROY, false));
			currentStage = null;
		}

		GameOverSubstate.reset();

		// Clear the static reference to this state.
		instance = null;
	}

	/**
	 * This function is called whenever Flixel switches switching to a new FlxState.
	 * @return Whether to actually switch to the new state.
	 */
	override function switchTo(nextState:FlxState):Bool
	{
		var result = super.switchTo(nextState);

		if (result)
		{
			performCleanup();
		}

		return result;
	}
}