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

/**** 
* Classes
****/ 
// Define a class for scrolling backgrounds
var Background = Container.expand(function () {
	var self = Container.call(this);
	self.speed = 3;
	self.asset = null;
	self.init = function (assetName, startX) {
		self.asset = self.attachAsset(assetName, {
			anchorX: 0,
			anchorY: 0
		});
		self.x = startX;
		self.y = 0;
	};
	self.update = function () {
		self.x -= gameSpeed;
		// If background has moved completely off screen to the left, reposition it to the right
		if (self.x <= -1366) {
			self.x = 1366 * 2;
		}
	};
	return self;
});
// Define a class for bombs dropped by player
var Bomb = Container.expand(function () {
	var self = Container.call(this);
	// Create bomb graphic
	var bombGraphics = self.attachAsset('bomb', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	// Track last position and explosion state
	self.lastY = 0;
	self.hasExploded = false;
	self.velocityY = 10;
	// Update bomb position and check for ground collision
	self.update = function () {
		// Store last position before updating
		self.lastY = self.y;
		// Apply gravity
		self.velocityY += 0.8;
		self.y += self.velocityY;
		// Check if bomb hits the ground
		if (self.lastY < floorLevel && self.y >= floorLevel) {
			self.explode();
		}
	};
	// Handle explosion effect and enemy destruction
	self.explode = function () {
		if (self.hasExploded) {
			return;
		}
		self.hasExploded = true;
		// Play explosion sound
		LK.getSound('explosion').play();
		// Create explosion graphic
		var explosion = LK.getAsset('explosion', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.8
		});
		explosion.x = self.x;
		explosion.y = floorLevel;
		game.addChild(explosion);
		// Check for enemies in explosion radius
		var enemyHit = false;
		var children = game.children.slice();
		for (var i = 0; i < children.length; i++) {
			if (children[i] instanceof Enemy) {
				var enemy = children[i];
				// Simple distance check for explosion radius
				var dx = enemy.x - self.x;
				var dy = enemy.y - self.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance < 150) {
					// Explosion radius
					// Remove enemy
					game.removeChild(enemy);
					enemyHit = true;
					// Add 500 points for destroying enemy with bomb
					LK.setScore(LK.getScore() + 500);
					scoreText.setText('Score: ' + LK.getScore());
					// Flash explosion with different color to indicate enemy hit
					LK.effects.flashObject(explosion, 0xFF0000, 300);
				}
			}
		}
		// Remove bomb
		game.removeChild(self);
		// Fade out and remove explosion after 500ms
		tween(explosion, {
			alpha: 0,
			scaleX: 2,
			scaleY: 2
		}, {
			duration: 500,
			onFinish: function onFinish() {
				game.removeChild(explosion);
			}
		});
	};
	return self;
});
// Define a class for enemies
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	// Create enemy using proper enemy sprite
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.5,
		scaleY: 0.5
	});
	// Track last position and collision state
	self.lastX = 0;
	self.lastCollided = false;
	self.update = function () {
		// Store last position before updating
		self.lastX = self.x;
		// Move at the same speed as background
		self.x -= gameSpeed;
		// Check if enemy hits left edge of screen
		if (self.lastX > 0 && self.x <= 0) {
			// Add 100 to score
			LK.setScore(LK.getScore() + 100);
			scoreText.setText('Score: ' + LK.getScore());
			// Remove this enemy
			self.parent.removeChild(self);
		}
		// Check collision with player if not previously collided
		if (!self.lastCollided && self.intersects(player)) {
			// Set collision flag to prevent multiple hits
			self.lastCollided = true;
			// Reduce player lives
			if (player.lives > 0) {
				player.lives--;
				// Play sound when life is lost
				LK.getSound('lifeLost').play();
				// Update heart display
				if (player.hearts.length > 0 && player.hearts[player.lives]) {
					game.removeChild(player.hearts[player.lives]);
					player.hearts.splice(player.lives, 1);
				}
				// Flash player to indicate damage
				LK.effects.flashObject(player, 0xFF0000, 500);
				// Game over if no lives left
				if (player.lives <= 0) {
					LK.showGameOver();
				}
			}
		}
	};
	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,
		scaleX: 1.5,
		scaleY: 1.5
	});
	self.speed = 5;
	self.jumpHeight = 40;
	self.isJumping = false;
	self.velocityY = 0;
	self.lives = 3; // Initialize player with 3 lives
	self.hearts = []; // Array to store heart icons
	self.canDropBomb = true; // Track if player can drop a bomb
	self.activeBomb = null; // Reference to current active bomb
	self.createHearts = function () {
		// Create three hearts in the middle of the screen near the bottom
		for (var i = 0; i < self.lives; i++) {
			var heart = new Container();
			// Create a red heart shape using heart shape
			var heartShape = heart.attachAsset('heart', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 0.8,
				scaleY: 0.8,
				tint: 0xFF0000 // Red color for hearts
			});
			// Calculate position in the middle of the screen
			heart.x = 2048 / 2 + (i - 1) * 150; // Center horizontally with wider spacing
			heart.y = 2732 - 200; // Position near the bottom of the screen
			// Remove heart from player and add to game so it stays fixed
			self.hearts.push(heart);
			game.addChild(heart);
		}
	};
	// Initialize hearts when player is created
	self.createHearts();
	self.update = function () {
		if (self.isJumping) {
			self.y += self.velocityY;
			self.velocityY += 0.7; // Decreased gravity effect by 30%
			if (self.y >= floorLevel) {
				// Return to floor level
				self.y = floorLevel;
				self.isJumping = false;
				self.velocityY = 0;
				self.canDropBomb = true; // Reset bomb drop ability when landing
				self.activeBomb = null; // Clear reference to active bomb
			}
		}
	};
	self.jump = function () {
		if (!self.isJumping) {
			self.isJumping = true;
			self.velocityY = -self.jumpHeight;
			self.canDropBomb = true; // Reset bomb drop ability on new jump
			// Play jump sound when player jumps
			LK.getSound('jump').play();
		} else if (self.canDropBomb) {
			// Drop a bomb if in mid-air and haven't dropped one yet
			self.canDropBomb = false;
			// Create new bomb
			var bomb = new Bomb();
			bomb.x = self.x;
			bomb.y = self.y + 50; // Position slightly below player
			bomb.lastY = bomb.y;
			// Add bomb to game
			game.addChild(bomb);
			self.activeBomb = bomb;
		}
	};
});
// Define a class for street backgrounds (bottom part)
var StreetBackground = Container.expand(function () {
	var self = Container.call(this);
	self.speed = 3;
	self.asset = null;
	self.init = function (assetName, startX) {
		self.asset = self.attachAsset(assetName, {
			anchorX: 0,
			anchorY: 0,
			scaleY: 0.5 // Make the background half height
		});
		self.x = startX;
		self.y = 2732 * 0.5; // Position in the bottom half of the screen
	};
	self.update = function () {
		self.x -= gameSpeed;
		// If background has moved completely off screen to the left, reposition it to the right
		if (self.x <= -2048) {
			self.x = 2048 * 2 - gameSpeed;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1A0933 // Dark purple background
});

/**** 
* Game Code
****/ 
// Game speed control variable
var gameSpeed = 5;
// Floor level variable (Y position for player and enemies)
var floorLevel = 2732 * 0.55 + 400; // 55% of screen height + 400px down
// Track enemies
var enemies = [];
// Create three scrolling backgrounds for the top part
var backgrounds = [];
// Create three scrolling backgrounds for the bottom part (street)
var streetBackgrounds = [];
// Create each background and position them
for (var i = 0; i < 3; i++) {
	var bg = new Background();
	bg.init('background' + (i + 1), i * 1366);
	backgrounds.push(bg);
	game.addChild(bg);
	// Create street backgrounds using different assets
	var streetBg = new StreetBackground();
	streetBg.init('street' + (i + 1), i * 2048);
	streetBackgrounds.push(streetBg);
	game.addChild(streetBg);
}
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2 - 500; // Move player back 500 pixels
player.y = floorLevel; // Position player at the floor level
// Create a new Text2 object to display the score with cyberpunk styling
var scoreText = new Text2('Score: 0', {
	size: 80,
	fill: 0x00FFFF,
	// Cyan color for cyberpunk neon effect
	stroke: 0xFF00FF,
	// Magenta stroke for contrast
	strokeThickness: 5,
	// Thick stroke for glow effect
	dropShadow: true,
	dropShadowColor: 0x00FFFF,
	// Cyan shadow
	dropShadowBlur: 10,
	dropShadowAngle: Math.PI / 4,
	dropShadowDistance: 6,
	letterSpacing: 3 // Spacing between letters for futuristic look
});
// Add the score text to the game GUI at the top right of the screen
LK.gui.topRight.addChild(scoreText);
// Anchor the text to the right side
scoreText.anchor.set(1, 0);
// Add padding from the right edge
scoreText.x = -20;
scoreText.y = 20;
// Create a pulsating glow effect for the cyberpunk score display
function pulseScoreText() {
	tween(scoreText, {
		strokeThickness: 8,
		dropShadowBlur: 15
	}, {
		duration: 800,
		onFinish: function onFinish() {
			tween(scoreText, {
				strokeThickness: 5,
				dropShadowBlur: 10
			}, {
				duration: 800,
				onFinish: pulseScoreText
			});
		}
	});
}
pulseScoreText();
// Handle game updates
game.update = function () {
	// Increase game speed as score increases for difficulty progression
	gameSpeed = 5 + Math.min(LK.getScore() / 10, 5); // Cap at max 10 speed
	// Update scrolling backgrounds
	for (var i = 0; i < backgrounds.length; i++) {
		backgrounds[i].update();
	}
	// Update street backgrounds
	for (var i = 0; i < streetBackgrounds.length; i++) {
		streetBackgrounds[i].update();
	}
	player.update();
	// Spawn enemies (wait 5 seconds at the start - 300 frames at 60fps)
	if (LK.ticks > 300 && LK.ticks % 180 === 0) {
		// Spawn enemy every 3 seconds (180 frames at 60fps)
		var enemy = new Enemy();
		enemy.x = 2048; // Start at right edge of screen
		enemy.y = floorLevel; // Position at floor level
		enemy.lastX = enemy.x; // Initialize lastX
		game.addChild(enemy);
	}
	// Update all enemies and bombs
	var children = game.children.slice();
	for (var i = 0; i < children.length; i++) {
		if (children[i] instanceof Enemy) {
			children[i].update();
		} else if (children[i] instanceof Bomb) {
			children[i].update();
		}
	}
	// Update score display
	scoreText.setText('Score: ' + LK.getScore());
};
// Handle player jump
game.down = function (x, y, obj) {
	player.jump();
};

===================================================================
--- original.js
+++ change.js
@@ -27,8 +27,90 @@
 		}
 	};
 	return self;
 });
+// Define a class for bombs dropped by player
+var Bomb = Container.expand(function () {
+	var self = Container.call(this);
+	// Create bomb graphic
+	var bombGraphics = self.attachAsset('bomb', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		scaleX: 1.2,
+		scaleY: 1.2
+	});
+	// Track last position and explosion state
+	self.lastY = 0;
+	self.hasExploded = false;
+	self.velocityY = 10;
+	// Update bomb position and check for ground collision
+	self.update = function () {
+		// Store last position before updating
+		self.lastY = self.y;
+		// Apply gravity
+		self.velocityY += 0.8;
+		self.y += self.velocityY;
+		// Check if bomb hits the ground
+		if (self.lastY < floorLevel && self.y >= floorLevel) {
+			self.explode();
+		}
+	};
+	// Handle explosion effect and enemy destruction
+	self.explode = function () {
+		if (self.hasExploded) {
+			return;
+		}
+		self.hasExploded = true;
+		// Play explosion sound
+		LK.getSound('explosion').play();
+		// Create explosion graphic
+		var explosion = LK.getAsset('explosion', {
+			anchorX: 0.5,
+			anchorY: 0.5,
+			alpha: 0.8
+		});
+		explosion.x = self.x;
+		explosion.y = floorLevel;
+		game.addChild(explosion);
+		// Check for enemies in explosion radius
+		var enemyHit = false;
+		var children = game.children.slice();
+		for (var i = 0; i < children.length; i++) {
+			if (children[i] instanceof Enemy) {
+				var enemy = children[i];
+				// Simple distance check for explosion radius
+				var dx = enemy.x - self.x;
+				var dy = enemy.y - self.y;
+				var distance = Math.sqrt(dx * dx + dy * dy);
+				if (distance < 150) {
+					// Explosion radius
+					// Remove enemy
+					game.removeChild(enemy);
+					enemyHit = true;
+					// Add 500 points for destroying enemy with bomb
+					LK.setScore(LK.getScore() + 500);
+					scoreText.setText('Score: ' + LK.getScore());
+					// Flash explosion with different color to indicate enemy hit
+					LK.effects.flashObject(explosion, 0xFF0000, 300);
+				}
+			}
+		}
+		// Remove bomb
+		game.removeChild(self);
+		// Fade out and remove explosion after 500ms
+		tween(explosion, {
+			alpha: 0,
+			scaleX: 2,
+			scaleY: 2
+		}, {
+			duration: 500,
+			onFinish: function onFinish() {
+				game.removeChild(explosion);
+			}
+		});
+	};
+	return self;
+});
 // Define a class for enemies
 var Enemy = Container.expand(function () {
 	var self = Container.call(this);
 	// Create enemy using proper enemy sprite
@@ -94,8 +176,10 @@
 	self.isJumping = false;
 	self.velocityY = 0;
 	self.lives = 3; // Initialize player with 3 lives
 	self.hearts = []; // Array to store heart icons
+	self.canDropBomb = true; // Track if player can drop a bomb
+	self.activeBomb = null; // Reference to current active bomb
 	self.createHearts = function () {
 		// Create three hearts in the middle of the screen near the bottom
 		for (var i = 0; i < self.lives; i++) {
 			var heart = new Container();
@@ -125,17 +209,31 @@
 				// Return to floor level
 				self.y = floorLevel;
 				self.isJumping = false;
 				self.velocityY = 0;
+				self.canDropBomb = true; // Reset bomb drop ability when landing
+				self.activeBomb = null; // Clear reference to active bomb
 			}
 		}
 	};
 	self.jump = function () {
 		if (!self.isJumping) {
 			self.isJumping = true;
 			self.velocityY = -self.jumpHeight;
+			self.canDropBomb = true; // Reset bomb drop ability on new jump
 			// Play jump sound when player jumps
 			LK.getSound('jump').play();
+		} else if (self.canDropBomb) {
+			// Drop a bomb if in mid-air and haven't dropped one yet
+			self.canDropBomb = false;
+			// Create new bomb
+			var bomb = new Bomb();
+			bomb.x = self.x;
+			bomb.y = self.y + 50; // Position slightly below player
+			bomb.lastY = bomb.y;
+			// Add bomb to game
+			game.addChild(bomb);
+			self.activeBomb = bomb;
 		}
 	};
 });
 // Define a class for street backgrounds (bottom part)
@@ -262,13 +360,15 @@
 		enemy.y = floorLevel; // Position at floor level
 		enemy.lastX = enemy.x; // Initialize lastX
 		game.addChild(enemy);
 	}
-	// Update all enemies
+	// Update all enemies and bombs
 	var children = game.children.slice();
 	for (var i = 0; i < children.length; i++) {
 		if (children[i] instanceof Enemy) {
 			children[i].update();
+		} else if (children[i] instanceof Bomb) {
+			children[i].update();
 		}
 	}
 	// Update score display
 	scoreText.setText('Score: ' + LK.getScore());