/**** 
* Classes
****/ 
// Create a Snowflake class by using the LK expand method to extend Container.
var Snowflake = Container.expand(function () {
	var self = Container.call(this);
	// Get and automatically addChild to self asset with id 'bg_Snowflake' with the anchor point set to .5, .5
	var scale = Math.random() * 0.5 + 0.5; // Random scale between 0.5 and 1
	var snowflakeGraphics = self.attachAsset('bg_Snowflake', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: scale,
		scaleY: scale
	});
	// Set snowflake speed
	self.speed = Math.random() * 0.5 + 0.5;
	// This is automatically called every game tick, if the snowflake is attached!
	self.update = function () {
		self.y += self.speed;
		// If the snowflake is off the screen, destroy it
		if (self.y > 2732 || self.x < 0) {
			self.destroy();
		}
	};
});

/**** 
* Initialize Game
****/ 
//---------------------------------------------------------------------------------------------------
//create variables for the various assets that will be loaded and unloaded and their various types
//---------------------------------------------------------------------------------------------------
//array for the elements of the menu so that we can easily destroy them or add them to the game
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
loadMenu();
vcr();
//array for the elements of the menu so that we can easily destroy them or add them to the game
var menuObjects = [];
// Call the vcr function to initialize bg_Grain and bg_ScanLine
//---------------------------------------------------------------------------------------------------
//create variables for the various assets that will be loaded and unloaded and their various types
//---------------------------------------------------------------------------------------------------
//array for the elements of the menu so that we can easily destroy them or add them to the game
var menuObjects = [];
//elements of the narration screen so that we can easily destroy or add them to the game
var introObjects = [];
//array for the snowflakes
var snowflakes = [];
//variables for the vcr effect that will hold the various assets of the effect
var grain, scanLines;
// Create a variable to keep track of the flicker state
var is_flickerState = false;
// Define eyeFlash variable
var eyeFlash;
//variable to keep track of if we are in the mainMenu or not
var is_mainMenu = false;
//variable to keep track of the help menu
var is_helpMenuVisible = false;
// Create a variable to keep track of the time elapsed
var timeElapsed = 0;
//------------------------------------------------------------------------------------
//functions for the visual and sound effects
//------------------------------------------------------------------------------------
//function that adds the effect of a vcr screen to the game.
function vcr() {
	// Add bg_Grain in the center of the playspace and set its alpha to 20%
	grain = game.addChild(LK.getAsset('bg_Grain', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 2048 / 2,
		y: 2732 / 2,
		alpha: 0.15
	}));
	// Instantiate bg_ScanLines in the center of the playspace above bg_grain
	scanLines = game.addChild(LK.getAsset('bg_ScanLine', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 2048 / 2,
		y: 2732 / 2,
		alpha: 0.12
	}));
	// Ensure bg_Grain and bg_ScanLines are always on the top layer
	game.setChildIndex(grain, game.children.length - 1);
	game.setChildIndex(scanLines, game.children.length - 1);
	// Function to animate bg_ScanLines
	function animateScanLines() {
		// Randomly move up or down by a small amount
		var jumpHeight = Math.random() * 600 - 300; // Random value between -25 and 25
		scanLines.y += jumpHeight;
		// Reposition to center after a short delay
		LK.setTimeout(function () {
			scanLines.x = 2048 / 2;
			scanLines.y = 2732 / 2;
		}, 1000); // 1 second delay
	}
	// Set interval to animate bg_ScanLines every few seconds
	LK.setInterval(animateScanLines, 3000); // Every 3 seconds
}
//function to add snowflakes on the screen
function createSnowflake() {
	var newSnowflake = new Snowflake();
	// Ensure the snowflake spawns from the top of the playspace
	newSnowflake.x = Math.random() * 2048;
	newSnowflake.y = -50;
	snowflakes.push(newSnowflake);
	game.addChild(newSnowflake);
}
//function to add screams to a scene
function addScream() {
	var randomSound = Math.floor(Math.random() * 4);
	switch (randomSound) {
		case 0:
			LK.getSound('s_ManScream01').play();
			break;
		case 1:
			LK.getSound('s_ManScream02').play();
			break;
		case 2:
			LK.getSound('s_WomanScream01').play();
			break;
		case 3:
			LK.getSound('s_WomanScream02').play();
			break;
	}
}
//--------------------------------------------------------------------------------
//functions that will be for the various loading of the game.
//--------------------------------------------------------------------------------
//a function to load the menu screen
function loadMenu() {
	is_mainMenu = true;
	// Retrieve the 'bg_TitleScreen' asset and position it at the center of the playspace
	var titleScreen = game.addChild(LK.getAsset('bg_TitleScreen', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 2048 / 2 - 100,
		y: 2732 / 2
	}));
	menuObjects.push(titleScreen);
	// Play s_splashscreen when the game starts
	LK.setTimeout(function () {
		LK.playMusic('s_SplashScreen', {
			loop: true
		});
	}, 1000);
	// Retrieve the 'bg_TornRope' asset and position it at the bottom middle of the playspace
	var tornRope = game.addChild(LK.getAsset('bg_TornRope', {
		anchorX: 0.5,
		anchorY: 1.0,
		x: 2048 / 2,
		y: 2832
	}));
	menuObjects.push(tornRope);
	// Retrieve the 'bg_eyeflash' asset, position it at the center of the playspace and set its alpha to 50%
	eyeFlash = game.addChild(LK.getAsset('bg_eyeflash', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 2048 / 2 - 75,
		y: 2732 / 2 - 100,
		alpha: 0.20
	}));
	menuObjects.push(eyeFlash);
	// Retrieve the 'bg_StartButton' asset and position it at the bottom left of the playspace
	var startButton = game.addChild(LK.getAsset('bg_StartButton', {
		anchorX: 0.0,
		anchorY: 1.0,
		x: 150,
		y: 2732
	}));
	menuObjects.push(startButton);
	// Add a down event to the startButton
	startButton.down = function (x, y, obj) {
		// Disable how-to button
		howTo.down = null;
		loadIntroNarrative();
	};
	// Retrieve the 'bg_HowTo' asset and position it at the bottom right of the playspace
	var howTo = game.addChild(LK.getAsset('bg_HowTo', {
		anchorX: 1.0,
		anchorY: 1.0,
		x: 1950,
		y: 2732
	}));
	menuObjects.push(howTo);
	// Variable to track the state of bg_HelpMenu
	is_helpMenuVisible = false;
	var helpMenu;
	//   Add a down event to the howTo button
	howTo.down = function (x, y, obj) {
		if (!is_helpMenuVisible) {
			triggerHowToButton();
		} else {
			// Destroy bg_HelpMenu
			if (helpMenu) {
				helpMenu.destroy();
			}
			is_helpMenuVisible = false;
		}
		// Play s_CrumpledPaper sound
		LK.getSound('s_CrumpledPaper').play();
	};
}
//a function that will remove all objects from memory when leaving the main menu.
function exitMainMenu() {
	is_mainMenu = false;
	//destroy all mainMenu objects
	for (var i = menuObjects.length - 1; i >= 0; i--) {
		if (menuObjects[i]) {
			menuObjects[i].destroy();
		}
	}
	//destroy all snowflakes
	for (var i = snowflakes.length - 1; i >= 0; i--) {
		if (snowflakes[i]) {
			snowflakes[i].destroy();
		}
	}
	// Stop all sounds
	LK.stopMusic();
	// Play shutdownsound
	LK.getSound('s_ShutdownSound').play();
	// Stop randomSound from playing
	timeElapsed = Infinity;
}
//function for the functionnality of the help button
function triggerHowToButton() {
	// Instantiate bg_HelpMenu in the center of the playspace
	helpMenu = game.addChild(LK.getAsset('bg_HelpMenu', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 2048 / 2,
		y: 2732 / 2 + 150
	}));
	is_helpMenuVisible = true;
	// Ensure bg_Grain and bg_ScanLines are always on the top layer
	if (!game.children.includes(grain)) {
		game.addChild(grain);
	}
	game.setChildIndex(grain, game.children.length - 1);
	if (!game.children.includes(scanLines)) {
		game.addChild(scanLines);
	}
	game.setChildIndex(scanLines, game.children.length - 1);
}
//function to load the intro narrative
function loadIntroNarrative() {
	// Retrieve the 'bg_DarkFilter' asset, position it at the center of the playspace and set its alpha to 0
	var darkFilter = game.addChild(LK.getAsset('bg_DarkFilter', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 2048 / 2,
		y: 2732 / 2,
		alpha: 0
	}));
	// Gradually fade in bg_darkfilter
	var fadeInterval = LK.setInterval(function () {
		darkFilter.alpha += 0.01;
		if (darkFilter.alpha >= 1) {
			LK.clearInterval(fadeInterval);
		}
	}, 10);
	// Move the destruction of all game elements inside the fadeInterval function
	var fadeInterval = LK.setInterval(function () {
		darkFilter.alpha += 0.01;
		if (darkFilter.alpha >= 1) {
			LK.clearInterval(fadeInterval);
			// Destroy all game elements including sounds after 1 second
			LK.setTimeout(function () {
				exitMainMenu();
				// Play s_KrampusLaugh01 2 seconds after bg_darkfilter is at 100% alpha only once
				if (!this.is_laughPlayed) {
					LK.setTimeout(function () {
						LK.getSound('s_KrampusLaugh01').play();
						// Instantiate bg_Krampus in the center of the playspace
						var krampus = game.addChild(LK.getAsset('bg_Krampus', {
							anchorX: 0.5,
							anchorY: 0.5,
							x: 2048 / 2,
							y: 3732 / 2 + 700
						}));
						// Move bg_Krampus to the top layer
						game.setChildIndex(krampus, game.children.length - 1);
						introObjects.push(krampus);
					}, 2000);
					this.laughPlayed = true;
				}
			}, 1000);
		}
	}, 10);
}
//function to destroy the objects in the introductionscreen
function destroyIntroObj() {
	for (var i = introObjects.length - 1; i >= 0; i--) {
		if (introObjects[i]) {
			introObjects[i].destroy();
		}
	}
}
//a function to load the first level of the game.
function loadLevel1() {}
//----------------------------------------------------------------------------------------------------
//the update function and the game flow
//----------------------------------------------------------------------------------------------------
//the game update function that looks at the state of the game. 
game.update = function () {
	// Check the current state of the flicker
	if (is_flickerState) {
		// If the state is true, set the alpha to 0.5
		eyeFlash.alpha = 0.20;
	} else {
		// If the state is false, set the alpha to 0
		eyeFlash.alpha = 0;
	}
	// Flip the state of the flicker
	is_flickerState = !is_flickerState;
	// Increment the time elapsed every tick
	timeElapsed++;
	// Create a new snowflake every 90 ticks only if the main menu is on
	if (is_mainMenu) {
		// Play either s_manscream01, s_manscream02, s_womanscream01, s_womanscream02 every 10 to 20 seconds
		if (timeElapsed % (Math.floor(Math.random() * (1200 - 600 + 1)) + 600) == 0) {
			addScream();
		}
		//have the snowflakes effect
		if (LK.ticks % 90 == 0) {
			createSnowflake();
		}
	}
};