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

/**** 
* Classes
****/ 
var ActionButton = Container.expand(function (label) {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('actionButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.5
	});
	var buttonText = new Text2(label, {
		size: 60,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	self.addChild(buttonText);
	self.buttonType = label;
	self.isPressed = false;
	self.down = function () {
		self.isPressed = true;
		buttonGraphics.alpha = 0.8;
		if (self.buttonType === 'A') {
			player.shoot();
		} else if (self.buttonType === 'B') {
			player.jump();
		}
	};
	self.up = function () {
		self.isPressed = false;
		buttonGraphics.alpha = 0.5;
	};
	return self;
});
var Background = Container.expand(function () {
	var self = Container.call(this);
	var backgroundGraphics = self.attachAsset('background', {
		anchorX: 0,
		anchorY: 0
	});
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.direction = 1; // 1 for right, -1 for left
	self.speed = 15;
	self.fromPlayer = true;
	self.update = function () {
		self.x += self.speed * self.direction;
		// Check if bullet is off-screen
		if (self.x < -50 || self.x > 2100) {
			self.shouldRemove = true;
		}
	};
	return self;
});
var Character = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('soldier', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.direction = 1; // 1 for right, -1 for left
	self.velocityY = 0;
	self.velocityX = 0;
	self.speed = 8;
	self.jumpForce = -20;
	self.gravity = 1;
	self.isJumping = false;
	self.isGrounded = false;
	self.jumpsRemaining = 0;
	self.maxJumps = 7;
	self.platform = null;
	self.health = 100;
	self.maxHealth = 100;
	self.jump = function () {
		if (self.isGrounded || self.jumpsRemaining > 0) {
			self.velocityY = self.jumpForce;
			self.isJumping = true;
			if (self.isGrounded) {
				self.jumpsRemaining = self.maxJumps - 1;
			} else {
				self.jumpsRemaining--;
			}
			self.isGrounded = false;
			LK.getSound('jump').play();
		}
	};
	self.shoot = function () {
		var bullet = new Bullet();
		bullet.x = self.x + self.direction * 40;
		bullet.y = self.y - 60;
		bullet.direction = self.direction;
		bullet.fromPlayer = true;
		bullets.push(bullet);
		game.addChild(bullet);
		LK.getSound('shoot').play();
	};
	self.moveLeft = function () {
		self.direction = -1;
		self.velocityX = -self.speed;
		graphics.scaleX = -1;
	};
	self.moveRight = function () {
		self.direction = 1;
		self.velocityX = self.speed;
		graphics.scaleX = 1;
	};
	self.stopMoving = function () {
		self.velocityX = 0;
	};
	self.update = function () {
		// Apply gravity
		self.velocityY += self.gravity;
		// Apply velocity
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Check screen boundaries
		if (self.x < 40) {
			self.x = 40;
		} else if (self.x > 2008) {
			self.x = 2008;
		}
		// Check if character fell off the bottom of the screen
		if (self.y > 2732) {
			LK.getSound('playerDeath').play();
			LK.effects.flashScreen(0xff0000, 500);
			LK.showGameOver();
		}
		// Reset grounded state
		self.isGrounded = false;
		// Check platform collisions
		for (var i = 0; i < platforms.length; i++) {
			var platform = platforms[i];
			// Simple collision detection with platform
			if (self.velocityY >= 0 &&
			// Only check collision when falling
			self.x >= platform.x && self.x <= platform.x + platform.width && self.y >= platform.y - 10 && self.y <= platform.y + 10) {
				self.isGrounded = true;
				self.isJumping = false;
				self.jumpsRemaining = self.maxJumps;
				self.velocityY = 0;
				self.y = platform.y;
				self.platform = platform;
				break;
			}
		}
	};
	return self;
});
var Enemy = Character.expand(function () {
	var self = Character.call(this);
	// Replace soldier asset with enemy asset
	self.removeChildren();
	var graphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	// Adjust enemy properties
	self.speed = 4;
	self.direction = -1;
	self.shootCooldown = 0;
	self.shootInterval = 180; // Three seconds (60 frames * 3)
	graphics.scaleX = -1;
	// Override update method
	var parentUpdate = self.update;
	self.update = function () {
		parentUpdate.call(this);
		// AI movement: patrol the platform
		if (self.platform) {
			// Check if reached edge of platform
			if (self.x <= self.platform.x + 40) {
				self.direction = 1;
				graphics.scaleX = 1;
				self.velocityX = self.speed;
			} else if (self.x >= self.platform.x + self.platform.width - 40) {
				self.direction = -1;
				graphics.scaleX = -1;
				self.velocityX = -self.speed;
			}
		}
		// Shooting logic
		self.shootCooldown++;
		if (self.shootCooldown >= self.shootInterval) {
			// Face the player before shooting
			if (player) {
				var directionToPlayer = player.x < self.x ? -1 : 1;
				graphics.scaleX = directionToPlayer;
			}
			self.shoot();
			self.shootCooldown = 0;
			self.shootInterval = 180; // Three seconds (60 frames * 3)
		}
	};
	// Override shoot method
	self.shoot = function () {
		// Determine direction to shoot based on player position
		var directionToPlayer = player.x < self.x ? -1 : 1;
		// Only 30% chance to actually fire a bullet
		if (Math.random() < 0.3) {
			var bullet = new Bullet();
			bullet.x = self.x + directionToPlayer * 40;
			bullet.y = self.y - 60;
			bullet.direction = directionToPlayer;
			bullet.fromPlayer = false;
			bullets.push(bullet);
			game.addChild(bullet);
			LK.getSound('shoot').play();
		}
	};
	return self;
});
var ControlButton = Container.expand(function (type) {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('controlButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.5
	});
	var buttonText = new Text2(type, {
		size: 60,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	self.addChild(buttonText);
	self.buttonType = type;
	self.isPressed = false;
	self.down = function () {
		self.isPressed = true;
		buttonGraphics.alpha = 0.8;
	};
	self.up = function () {
		self.isPressed = false;
		buttonGraphics.alpha = 0.5;
	};
	return self;
});
var HealthBar = Container.expand(function () {
	var self = Container.call(this);
	// Background bar
	self.background = new Container();
	var bgGraphics = self.background.attachAsset('platform', {
		anchorX: 0,
		anchorY: 0
	});
	bgGraphics.tint = 0x333333;
	self.addChild(self.background);
	// Health bar
	self.bar = new Container();
	var barGraphics = self.bar.attachAsset('platform', {
		anchorX: 0,
		anchorY: 0
	});
	barGraphics.tint = 0x00FF00;
	self.addChild(self.bar);
	// Set size
	self.width = 200;
	self.height = 20;
	self.background.width = self.width;
	self.background.height = self.height;
	self.background.scaleX = self.width / 400;
	self.background.scaleY = self.height / 50;
	// Update health percentage
	self.updateHealth = function (current, max) {
		var percentage = Math.max(0, Math.min(1, current / max));
		self.bar.width = self.width * percentage;
		self.bar.scaleX = self.width / 400 * percentage;
		self.bar.scaleY = self.height / 50;
		// Change color based on health
		var barGraphics = self.bar.children[0];
		if (percentage > 0.6) {
			barGraphics.tint = 0x00FF00; // Green
		} else if (percentage > 0.3) {
			barGraphics.tint = 0xFFFF00; // Yellow
		} else {
			barGraphics.tint = 0xFF0000; // Red
		}
	};
	return self;
});
var Platform = Container.expand(function () {
	var self = Container.call(this);
	var platformGraphics = self.attachAsset('platform', {
		anchorX: 0,
		anchorY: 0
	});
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var player;
var platforms = [];
var enemies = [];
var bullets = [];
var leftButton, rightButton, jumpButton, shootButton;
var scoreText;
var jumpIndicator;
var healthBar;
// Setup game UI
function setupUI() {
	// Create score display
	scoreText = new Text2('Enemies: ' + enemies.length, {
		size: 60,
		fill: 0xFFFFFF
	});
	scoreText.anchor.set(0.5, 0);
	LK.gui.top.addChild(scoreText);
	// Create jump counter display
	jumpIndicator = new Text2('Jumps: 7', {
		size: 60,
		fill: 0xFFFFFF
	});
	jumpIndicator.anchor.set(0, 0);
	jumpIndicator.x = 50;
	LK.gui.top.addChild(jumpIndicator);
	// Create health bar
	healthBar = new HealthBar();
	healthBar.x = 50;
	healthBar.y = 100;
	LK.gui.top.addChild(healthBar);
	// Create control buttons
	leftButton = new ControlButton('←');
	leftButton.x = 150;
	leftButton.y = 2500;
	game.addChild(leftButton);
	rightButton = new ControlButton('→');
	rightButton.x = 350;
	rightButton.y = 2500;
	game.addChild(rightButton);
	jumpButton = new ActionButton('B');
	jumpButton.x = 1850;
	jumpButton.y = 2500;
	game.addChild(jumpButton);
	shootButton = new ActionButton('A');
	shootButton.x = 1650;
	shootButton.y = 2500;
	game.addChild(shootButton);
}
// Create game platforms
function createPlatforms() {
	// Create ground platform
	var ground = new Platform();
	ground.x = 0;
	ground.y = 2600;
	ground.width = 2048;
	ground.scaleX = 5.12; // Scale to fit screen width (2048/400)
	platforms.push(ground);
	game.addChild(ground);
	// Create elevated platforms (6 more for a total of 7) with random positions
	var platformPositions = [];
	// Define height sections for platform distribution
	var heightSections = [{
		min: 2200,
		max: 2400
	}, {
		min: 1900,
		max: 2100
	}, {
		min: 1600,
		max: 1800
	}, {
		min: 1300,
		max: 1500
	}, {
		min: 1000,
		max: 1200
	}, {
		min: 700,
		max: 900
	}];
	// Create one platform in each height section
	for (var i = 0; i < heightSections.length; i++) {
		var section = heightSections[i];
		var randomX = Math.floor(Math.random() * (1700 - 200) + 200); // Random X between 200-1700
		var randomY = Math.floor(Math.random() * (section.max - section.min) + section.min);
		var randomScale = Math.random() * 0.5 + 0.8; // Random scale between 0.8 and 1.3
		platformPositions.push({
			x: randomX,
			y: randomY,
			scale: randomScale
		});
	}
	for (var i = 0; i < platformPositions.length; i++) {
		var pos = platformPositions[i];
		var platform = new Platform();
		platform.x = pos.x;
		platform.y = pos.y;
		platform.scaleX = pos.scale;
		platform.width = 400 * pos.scale;
		platforms.push(platform);
		game.addChild(platform);
	}
}
// Create enemies
function createEnemies() {
	// Place enemies on different platforms with random x positions
	var enemyPositions = [];
	// Skip the ground platform (index 0) and place enemies on platforms 1-5
	for (var i = 1; i <= 5; i++) {
		var platform = platforms[i];
		var platformWidth = platform.width;
		// Calculate a random x position within the platform's bounds
		var randomX = Math.floor(Math.random() * (platformWidth - 80)) + platform.x + 40;
		enemyPositions.push({
			x: randomX,
			platform: i
		});
	}
	for (var i = 0; i < enemyPositions.length; i++) {
		var pos = enemyPositions[i];
		var enemy = new Enemy();
		var platform = platforms[pos.platform];
		enemy.x = pos.x;
		enemy.y = platform.y;
		enemy.platform = platform;
		enemies.push(enemy);
		game.addChild(enemy);
	}
}
// Create player
function createPlayer() {
	player = new Character();
	player.x = 100;
	player.y = platforms[0].y; // Start on ground
	player.platform = platforms[0];
	player.health = player.maxHealth; // Initialize full health
	game.addChild(player);
}
// Initialize game
function initGame() {
	// Add background
	var background = new Background();
	background.x = 0;
	background.y = 0;
	game.addChild(background);
	// Create game elements
	createPlatforms();
	createEnemies();
	createPlayer();
	setupUI();
	// Play background music
	LK.playMusic('bgMusic');
}
// Handle input
game.down = function (x, y, obj) {
	// Only respond to direct object clicks
	if (!obj) return;
	if (obj === leftButton) {
		leftButton.down();
	} else if (obj === rightButton) {
		rightButton.down();
	} else if (obj === jumpButton) {
		jumpButton.down();
	} else if (obj === shootButton) {
		shootButton.down();
	}
};
game.up = function (x, y, obj) {
	// First check if any button was directly clicked
	if (obj) {
		if (obj === leftButton) {
			leftButton.up();
		} else if (obj === rightButton) {
			rightButton.up();
		} else if (obj === jumpButton) {
			jumpButton.up();
		} else if (obj === shootButton) {
			shootButton.up();
		}
		return;
	}
	// Check if any button is being released
	if (leftButton.isPressed) leftButton.up();
	if (rightButton.isPressed) rightButton.up();
	if (jumpButton.isPressed) jumpButton.up();
	if (shootButton.isPressed) shootButton.up();
};
// Update function gets called every frame
game.update = function () {
	if (!player) {
		initGame();
		return;
	}
	// Handle control input
	if (leftButton && leftButton.isPressed) {
		player.moveLeft();
	} else if (rightButton && rightButton.isPressed) {
		player.moveRight();
	} else {
		player.stopMoving();
	}
	// Update player
	player.update();
	// Update jump indicator text
	if (jumpIndicator) {
		jumpIndicator.setText("Jumps: " + (player.isGrounded ? player.maxJumps : player.jumpsRemaining));
	}
	// Update health bar
	if (healthBar) {
		healthBar.updateHealth(player.health, player.maxHealth);
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].update();
	}
	// Update bullets
	for (var j = bullets.length - 1; j >= 0; j--) {
		var bullet = bullets[j];
		bullet.update();
		// Check if bullet should be removed
		if (bullet.shouldRemove) {
			bullet.destroy();
			bullets.splice(j, 1);
			continue;
		}
		// Check bullet collisions with enemies
		if (bullet.fromPlayer) {
			for (var k = enemies.length - 1; k >= 0; k--) {
				var enemy = enemies[k];
				if (bullet.intersects(enemy)) {
					// Enemy hit
					LK.getSound('enemyDeath').play();
					LK.effects.flashObject(enemy, 0xFF0000, 300);
					// Remove enemy
					enemy.destroy();
					enemies.splice(k, 1);
					// Remove bullet
					bullet.destroy();
					bullets.splice(j, 1);
					// Update score
					scoreText.setText('Enemies: ' + enemies.length);
					// Check if all enemies are defeated
					if (enemies.length === 0) {
						LK.showYouWin();
					}
					break;
				}
			}
		}
		// Check bullet collisions with player
		else if (!bullet.fromPlayer && bullet.intersects(player)) {
			// Player hit
			LK.getSound('shoot').play();
			LK.effects.flashObject(player, 0xFF0000, 300);
			// Reduce player health
			player.health -= 20; // Each bullet deals 20 damage
			healthBar.updateHealth(player.health, player.maxHealth);
			// Game over if health is depleted
			if (player.health <= 0) {
				LK.getSound('playerDeath').play();
				LK.effects.flashScreen(0xFF0000, 500);
				// Game over
				LK.showGameOver();
			}
			// Remove bullet
			bullet.destroy();
			bullets.splice(j, 1);
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -36,8 +36,16 @@
 		buttonGraphics.alpha = 0.5;
 	};
 	return self;
 });
+var Background = Container.expand(function () {
+	var self = Container.call(this);
+	var backgroundGraphics = self.attachAsset('background', {
+		anchorX: 0,
+		anchorY: 0
+	});
+	return self;
+});
 var Bullet = Container.expand(function () {
 	var self = Container.call(this);
 	var bulletGraphics = self.attachAsset('bullet', {
 		anchorX: 0.5,
@@ -438,8 +446,13 @@
 	game.addChild(player);
 }
 // Initialize game
 function initGame() {
+	// Add background
+	var background = new Background();
+	background.x = 0;
+	background.y = 0;
+	game.addChild(background);
 	// Create game elements
 	createPlatforms();
 	createEnemies();
 	createPlayer();