/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
// Define a class for enemies
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.x -= self.speed;
		if (self.x < -50) {
			self.destroy();
		}
	};
});
// Define a class for collectible hearts
var Heart = Container.expand(function () {
	var self = Container.call(this);
	var heartGraphics = self.attachAsset('heart', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1,
		scaleY: 1
	});
	self.speed = 5;
	self.lastY = self.y;
	self.lastX = self.x;
	// Add some floating animation
	self.floatOffset = Math.random() * Math.PI * 2;
	self.floatSpeed = 0.05;
	self.baseY = 0;
	self.update = function () {
		// Store last position for collision detection
		self.lastY = self.y;
		self.lastX = self.x;
		// Move the heart
		self.x -= self.speed;
		// Floating animation
		self.y = self.baseY + Math.sin(LK.ticks * self.floatSpeed + self.floatOffset) * 20;
		// Remove if offscreen
		if (self.x < -50) {
			self.destroy();
		}
	};
	return self;
});
//<Assets used in the game will automatically appear here>
// Define a class for the player character
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.jumpHeight = 40;
	self.isJumping = false;
	self.velocityY = 0;
	self.update = function () {
		if (self.isJumping) {
			self.y += self.velocityY;
			self.velocityY += 0.7; // Decreased gravity effect by 30%
			if (self.y >= 2732 / 2) {
				// Ground level
				self.y = 2732 / 2;
				self.isJumping = false;
				self.velocityY = 0;
			}
		}
	};
	self.jump = function () {
		if (!self.isJumping) {
			self.isJumping = true;
			self.velocityY = -self.jumpHeight;
		}
	};
});
// Define a class for star bullets
var Star = Container.expand(function () {
	var self = Container.call(this);
	// Create a yellow star shape using the built-in shape feature
	var starGraphics = self.attachAsset('star', {
		width: 50,
		height: 50,
		color: 0xffff00,
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	// Store the last position for collision detection
	self.lastY = self.y;
	self.lastX = self.x;
	self.update = function () {
		// Store last position before update
		self.lastY = self.y;
		self.lastX = self.x;
		// Move the star forward
		self.x += self.speed;
		// Remove if it goes off-screen
		if (self.x > 2048 + 50) {
			self.destroy();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB // Sky blue background
});

/**** 
* Game Code
****/ 
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0
}));
background.x = 0;
background.y = 0;
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 / 2;
player.lives = 3;
player.invulnerable = false;
player.invulnerableTime = 0;
// Initialize enemies
var enemies = [];
var enemySpawnInterval = 100;
var enemySpawnCounter = 0;
// Initialize collectible hearts
var collectibleHearts = [];
var heartSpawnInterval = 300; // Less frequent than enemies
var heartSpawnCounter = 0;
// Create life display with proper heart images
var maxHearts = 5; // Maximum number of hearts
var heartsContainer = new Container();
LK.gui.top.addChild(heartsContainer);
heartsContainer.x = 0; // Will be centered
heartsContainer.y = 150; // Offset from top edge
// Create heart icons array - we'll display both filled and empty hearts
var heartIcons = [];
// Function to update heart display
function updateHeartDisplay() {
	// Remove existing hearts
	while (heartsContainer.children.length > 0) {
		heartsContainer.removeChildAt(0);
	}
	// Add heart icons
	for (var i = 0; i < player.lives; i++) {
		var heart = heartsContainer.addChild(LK.getAsset('heart', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1,
			scaleY: 1
		}));
		// Position hearts in a row, centered
		var heartSpacing = 130;
		var totalWidth = (player.lives - 1) * heartSpacing;
		heart.x = -totalWidth / 2 + i * heartSpacing;
		heartIcons[i] = heart;
	}
}
// Initialize heart display
updateHeartDisplay();
// Create a new Text2 object to display the score
var scoreText = new Text2('0', {
	size: 100,
	fill: 0xFFFFFF
});
// Add the score text to the game GUI at the top center of the screen
LK.gui.top.addChild(scoreText);
scoreText.x = 2048 / 2;
scoreText.y = 0;
// Create instruction text with black background
var instructionContainer = new Container();
LK.gui.center.addChild(instructionContainer);
instructionContainer.y = 300;
// Create black background for instructions
var instructionBg = new Container();
instructionBg.width = 1000;
instructionBg.height = 350;
instructionContainer.addChild(instructionBg);
// Create a black rectangle background
var blackBg = instructionBg.attachAsset('rect', {
	width: 1000,
	height: 350,
	color: 0x000000,
	shape: 'box',
	anchorX: 0.5,
	anchorY: 0.5,
	alpha: 0.9
});
// Create instruction text with more detailed controls
var instructionText = new Text2('TAP to JUMP\nHOLD to continuously SHOOT', {
	size: 60,
	fill: 0xFFFFFF,
	align: 'center'
});
instructionText.anchor.set(0.5, 0.5);
instructionContainer.addChild(instructionText);
// Create a timeout to hide instructions after 8 seconds (extended time)
LK.setTimeout(function () {
	// Fade out instructions
	var alpha = 1;
	var fadeInterval = LK.setInterval(function () {
		alpha -= 0.05; // Slower fade for better readability
		instructionContainer.alpha = alpha; // Fade the entire container including background
		if (alpha <= 0) {
			LK.clearInterval(fadeInterval);
			instructionContainer.visible = false;
		}
	}, 100);
}, 8000);
// Handle game updates
// Array to store bullets
var stars = [];
var shootTimer = 0;
game.update = function () {
	player.update();
	// Handle player invulnerability
	if (player.invulnerable) {
		// Make player flash to indicate invulnerability
		player.alpha = Math.sin(Date.now() * 0.01) * 0.5 + 0.5;
		// End invulnerability after 2 seconds
		if (Date.now() - player.invulnerableTime > 2000) {
			player.invulnerable = false;
			player.alpha = 1;
		}
	}
	// Removed auto-shooting to only allow double tap shooting
	// Update stars
	for (var i = stars.length - 1; i >= 0; i--) {
		stars[i].update();
		// Remove stars that are destroyed
		if (!stars[i].parent) {
			stars.splice(i, 1);
			continue;
		}
		// Check for star-enemy collisions
		for (var j = enemies.length - 1; j >= 0; j--) {
			if (stars[i] && enemies[j] && stars[i].intersects(enemies[j])) {
				// Remove the enemy and the star
				enemies[j].destroy();
				enemies.splice(j, 1);
				stars[i].destroy();
				stars.splice(i, 1);
				// Update score
				LK.setScore(LK.getScore() + 1);
				scoreText.setText(LK.getScore());
				break;
			}
		}
	}
	// Hearts are now managed by updateHeartDisplay function
	// Update collectible hearts
	for (var i = collectibleHearts.length - 1; i >= 0; i--) {
		collectibleHearts[i].update();
		// Remove hearts that are destroyed
		if (!collectibleHearts[i].parent) {
			collectibleHearts.splice(i, 1);
			continue;
		}
		// Check for player-heart collisions
		if (player.intersects(collectibleHearts[i])) {
			// Player collected a heart
			collectibleHearts[i].destroy();
			collectibleHearts.splice(i, 1);
			// Add a life if not at maximum
			if (player.lives < 5) {
				player.lives++;
				// Show heart collection indicator
				showActionIndicator("+1 LIFE!", 1000);
				// Update heart display
				updateHeartDisplay();
				// Get the newest heart for animation
				var newHeartIndex = player.lives - 1;
				var heart = heartIcons[newHeartIndex];
				// Show animation effect
				tween(heart, {
					scaleX: 1.5,
					scaleY: 1.5
				}, {
					duration: 300,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						tween(heart, {
							scaleX: 1,
							scaleY: 1
						}, {
							duration: 300,
							easing: tween.easeIn
						});
					}
				});
			}
		}
	}
	// Spawn enemies
	enemySpawnCounter++;
	if (enemySpawnCounter >= enemySpawnInterval) {
		var enemy = new Enemy();
		enemy.x = 2048;
		enemy.y = 2732 / 2;
		enemies.push(enemy);
		game.addChild(enemy);
		// Randomize the spawn interval for the next enemy
		enemySpawnInterval = Math.floor(Math.random() * 150) + 50;
		enemySpawnCounter = 0;
	}
	// Spawn collectible hearts
	heartSpawnCounter++;
	if (heartSpawnCounter >= heartSpawnInterval) {
		var heart = new Heart();
		heart.x = 2048;
		heart.y = Math.random() * 600 + 200; // Only spawn in upper third of screen
		heart.baseY = heart.y;
		collectibleHearts.push(heart);
		game.addChild(heart);
		// Randomize the spawn interval for the next heart (less frequent than enemies)
		heartSpawnInterval = Math.floor(Math.random() * 300) + 300;
		heartSpawnCounter = 0;
	}
	// Update enemies
	for (var j = enemies.length - 1; j >= 0; j--) {
		enemies[j].update();
		if (player.intersects(enemies[j]) && !player.invulnerable) {
			// Player was hit, lose a life
			player.lives--;
			// Play hit sound
			LK.getSound('hit').play();
			// Flash screen to indicate damage
			LK.effects.flashScreen(0xff0000, 500);
			// Show damage indicator
			showActionIndicator("-1 LIFE!", 1000);
			// Make player temporarily invulnerable
			player.invulnerable = true;
			player.invulnerableTime = Date.now();
			// Update hearts display
			updateHeartDisplay();
			// Check if player is out of lives
			if (player.lives <= 0) {
				LK.showGameOver();
			} else {
				// Destroy the enemy that hit the player
				enemies[j].destroy();
				enemies.splice(j, 1);
			}
		} else if (player.x > enemies[j].x && !enemies[j].passed) {
			enemies[j].passed = true;
			LK.setScore(LK.getScore() + 1);
			scoreText.setText(LK.getScore());
		}
	}
};
// Handle player interaction
var dragNode = null;
var actionIndicator = null;
// Create visual indicators for player actions
function showActionIndicator(text, duration) {
	// Remove any existing indicator
	if (actionIndicator && actionIndicator.parent) {
		actionIndicator.parent.removeChild(actionIndicator);
	}
	// Create new indicator
	actionIndicator = new Container();
	game.addChild(actionIndicator);
	// Add background
	var bg = actionIndicator.attachAsset('rect', {
		width: 300,
		height: 80,
		color: 0x000000,
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.7
	});
	// Add text
	var txt = new Text2(text, {
		size: 50,
		fill: 0xFFFFFF,
		align: 'center'
	});
	txt.anchor.set(0.5, 0.5);
	actionIndicator.addChild(txt);
	// Position above player
	actionIndicator.x = player.x;
	actionIndicator.y = player.y - 150;
	// Fade out after duration
	actionIndicator.alpha = 1;
	tween(actionIndicator, {
		alpha: 0,
		y: actionIndicator.y - 50
	}, {
		duration: duration,
		easing: tween.easeOut,
		onFinish: function onFinish() {
			if (actionIndicator && actionIndicator.parent) {
				actionIndicator.parent.removeChild(actionIndicator);
			}
		}
	});
}
// Function to handle movement and shooting while holding
function handleMove(x, y, obj) {
	if (dragNode) {
		dragNode.x = x;
		// Keep the player at the same vertical position if not jumping
		if (!player.isJumping) {
			dragNode.y = 2732 / 2;
		}
		// If holding finger on screen, continuously shoot
		if (shootTimer > 0) {
			// Only shoot every 10 ticks to control fire rate
			if (LK.ticks % 10 === 0) {
				var star = new Star();
				star.x = player.x + 100;
				star.y = player.y;
				stars.push(star);
				game.addChild(star);
				// Play shooting sound
				LK.getSound('shoot').play();
			}
		}
	}
}
// shootTimer already declared earlier in the code
// Start tracking player movement on touch down and shoot on hold
game.down = function (x, y, obj) {
	// Always make the player jump on tap
	player.jump();
	// Show jump indicator
	showActionIndicator("JUMP!", 800);
	// Start shooting timer
	shootTimer = Date.now();
	// Handle regular movement
	dragNode = player;
	handleMove(x, y, obj);
};
// Update player position during movement
game.move = handleMove;
// Stop tracking player movement and shooting on touch up
game.up = function (x, y, obj) {
	dragNode = null;
	shootTimer = 0; // Reset shoot timer
};

===================================================================
--- original.js
+++ change.js
@@ -324,9 +324,9 @@
 	heartSpawnCounter++;
 	if (heartSpawnCounter >= heartSpawnInterval) {
 		var heart = new Heart();
 		heart.x = 2048;
-		heart.y = Math.random() * (2732 / 2) + 600; // Random height but not too low
+		heart.y = Math.random() * 600 + 200; // Only spawn in upper third of screen
 		heart.baseY = heart.y;
 		collectibleHearts.push(heart);
 		game.addChild(heart);
 		// Randomize the spawn interval for the next heart (less frequent than enemies)