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

/**** 
* Classes
****/ 
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = (Math.random() - 0.5) * 3;
	self.speedY = (Math.random() - 0.5) * 3;
	self.health = 1;
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		// Bounce off screen edges
		if (self.x < 30 || self.x > 2018) {
			self.speedX *= -1;
		}
		if (self.y < 30 || self.y > 2702) {
			self.speedY *= -1;
		}
	};
	return self;
});
var Jar = Container.expand(function () {
	var self = Container.call(this);
	var jarGraphics = self.attachAsset('jar', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.broken = false;
	self.breakJar = function () {
		if (!self.broken) {
			self.broken = true;
			LK.getSound('jarBreak').play();
			LK.setScore(LK.getScore() + 5);
			scoreTxt.setText(LK.getScore());
			// Break animation - scale down and fade out
			tween(jarGraphics, {
				scaleX: 0.1,
				scaleY: 0.1,
				alpha: 0
			}, {
				duration: 300,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					self.destroy();
				}
			});
		}
	};
	return self;
});
var Ninja = Container.expand(function () {
	var self = Container.call(this);
	var ninjaGraphics = self.attachAsset('ninja', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityY = 0;
	self.onGround = false;
	self.gravity = 0.8;
	self.jumpPower = -18;
	self.health = 3;
	self.attackCooldown = 0;
	self.update = function () {
		// Apply gravity
		if (!self.onGround) {
			self.velocityY += self.gravity;
		}
		self.y += self.velocityY;
		// Reset ground state
		self.onGround = false;
		// Check platform collisions
		for (var i = 0; i < platforms.length; i++) {
			var platform = platforms[i];
			if (self.intersects(platform) && self.velocityY > 0) {
				var platformTop = platform.y - platform.height / 2;
				var ninjaBottom = self.y + self.height / 2;
				if (ninjaBottom > platformTop - 20) {
					self.y = platformTop - self.height / 2;
					self.velocityY = 0;
					self.onGround = true;
					break;
				}
			}
		}
		// Fall off screen check
		if (self.y > 2800) {
			LK.showGameOver();
		}
		// Reduce attack cooldown
		if (self.attackCooldown > 0) {
			self.attackCooldown--;
		}
	};
	self.jump = function () {
		if (self.onGround) {
			self.velocityY = self.jumpPower;
			self.onGround = false;
			LK.getSound('jump').play();
		}
	};
	self.attack = function (targetX, targetY) {
		if (self.attackCooldown <= 0) {
			var projectile = new Projectile();
			projectile.x = self.x;
			projectile.y = self.y;
			var dx = targetX - self.x;
			var dy = targetY - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			projectile.speedX = dx / distance * 12;
			projectile.speedY = dy / distance * 12;
			projectiles.push(projectile);
			game.addChild(projectile);
			self.attackCooldown = 20;
			LK.getSound('attack').play();
		}
	};
	return self;
});
var Platform = Container.expand(function () {
	var self = Container.call(this);
	var platformGraphics = self.attachAsset('platform', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var Projectile = Container.expand(function () {
	var self = Container.call(this);
	var projectileGraphics = self.attachAsset('projectile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = 0;
	self.speedY = 0;
	self.lifetime = 0;
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.lifetime++;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87ceeb
});

/**** 
* Game Code
****/ 
var ninja = new Ninja();
var platforms = [];
var enemies = [];
var projectiles = [];
var jars = [];
var enemySpawnTimer = 0;
var difficultyTimer = 0;
// Create score display
var scoreTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Generate random platforms
function generatePlatforms() {
	platforms = [];
	// Ground platform
	var groundPlatform = new Platform();
	groundPlatform.x = 1024;
	groundPlatform.y = 2600;
	groundPlatform.width = 400;
	platforms.push(groundPlatform);
	game.addChild(groundPlatform);
	// Random platforms
	for (var i = 0; i < 8; i++) {
		var platform = new Platform();
		platform.x = Math.random() * 1600 + 200;
		platform.y = 2400 - i * 250 - Math.random() * 100;
		platform.width = 150 + Math.random() * 100;
		platforms.push(platform);
		game.addChild(platform);
		// Add jar on some platforms (60% chance)
		if (Math.random() < 0.6) {
			var jar = new Jar();
			jar.x = platform.x;
			jar.y = platform.y - platform.height / 2;
			jars.push(jar);
			game.addChild(jar);
		}
	}
}
function spawnEnemy() {
	var enemy = new Enemy();
	// Spawn from random edge
	var side = Math.floor(Math.random() * 4);
	switch (side) {
		case 0:
			// Top
			enemy.x = Math.random() * 2048;
			enemy.y = -30;
			break;
		case 1:
			// Right
			enemy.x = 2078;
			enemy.y = Math.random() * 2732;
			break;
		case 2:
			// Bottom
			enemy.x = Math.random() * 2048;
			enemy.y = 2762;
			break;
		case 3:
			// Left
			enemy.x = -30;
			enemy.y = Math.random() * 2732;
			break;
	}
	enemies.push(enemy);
	game.addChild(enemy);
}
// Initialize game elements
generatePlatforms();
ninja.x = 1024;
ninja.y = 2500;
game.addChild(ninja);
// Touch controls
game.down = function (x, y, obj) {
	// If touching near ninja, jump
	var dx = x - ninja.x;
	var dy = y - ninja.y;
	var distance = Math.sqrt(dx * dx + dy * dy);
	if (distance < 150) {
		ninja.jump();
	} else {
		// Attack in direction of touch
		ninja.attack(x, y);
	}
};
game.update = function () {
	// Spawn enemies
	enemySpawnTimer++;
	difficultyTimer++;
	var spawnRate = Math.max(180 - Math.floor(difficultyTimer / 300), 60);
	if (enemySpawnTimer >= spawnRate) {
		spawnEnemy();
		enemySpawnTimer = 0;
	}
	// Check projectile vs enemy collisions
	for (var p = projectiles.length - 1; p >= 0; p--) {
		var projectile = projectiles[p];
		// Remove old projectiles
		if (projectile.lifetime > 180 || projectile.x < -50 || projectile.x > 2098 || projectile.y < -50 || projectile.y > 2782) {
			projectile.destroy();
			projectiles.splice(p, 1);
			continue;
		}
		// Check enemy hits
		for (var e = enemies.length - 1; e >= 0; e--) {
			var enemy = enemies[e];
			if (projectile.intersects(enemy)) {
				// Hit enemy
				LK.setScore(LK.getScore() + 10);
				scoreTxt.setText(LK.getScore());
				LK.getSound('enemyHit').play();
				LK.effects.flashObject(enemy, 0xffffff, 200);
				enemy.destroy();
				enemies.splice(e, 1);
				projectile.destroy();
				projectiles.splice(p, 1);
				break;
			}
			// Check jar hits
			for (var j = jars.length - 1; j >= 0; j--) {
				var jar = jars[j];
				if (!jar.broken && projectile.intersects(jar)) {
					jar.breakJar();
					jars.splice(j, 1);
					projectile.destroy();
					projectiles.splice(p, 1);
					break;
				}
			}
		}
	}
	// Check ninja vs enemy collisions
	for (var e = enemies.length - 1; e >= 0; e--) {
		var enemy = enemies[e];
		if (ninja.intersects(enemy)) {
			ninja.health--;
			LK.effects.flashObject(ninja, 0xff0000, 500);
			enemy.destroy();
			enemies.splice(e, 1);
			if (ninja.health <= 0) {
				LK.showGameOver();
			}
		}
	}
	// Keep ninja on screen horizontally
	if (ninja.x < 40) ninja.x = 40;
	if (ninja.x > 2008) ninja.x = 2008;
};

===================================================================
--- original.js
+++ change.js
@@ -27,8 +27,37 @@
 		}
 	};
 	return self;
 });
+var Jar = Container.expand(function () {
+	var self = Container.call(this);
+	var jarGraphics = self.attachAsset('jar', {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	self.broken = false;
+	self.breakJar = function () {
+		if (!self.broken) {
+			self.broken = true;
+			LK.getSound('jarBreak').play();
+			LK.setScore(LK.getScore() + 5);
+			scoreTxt.setText(LK.getScore());
+			// Break animation - scale down and fade out
+			tween(jarGraphics, {
+				scaleX: 0.1,
+				scaleY: 0.1,
+				alpha: 0
+			}, {
+				duration: 300,
+				easing: tween.easeOut,
+				onFinish: function onFinish() {
+					self.destroy();
+				}
+			});
+		}
+	};
+	return self;
+});
 var Ninja = Container.expand(function () {
 	var self = Container.call(this);
 	var ninjaGraphics = self.attachAsset('ninja', {
 		anchorX: 0.5,
@@ -134,8 +163,9 @@
 var ninja = new Ninja();
 var platforms = [];
 var enemies = [];
 var projectiles = [];
+var jars = [];
 var enemySpawnTimer = 0;
 var difficultyTimer = 0;
 // Create score display
 var scoreTxt = new Text2('0', {
@@ -161,8 +191,16 @@
 		platform.y = 2400 - i * 250 - Math.random() * 100;
 		platform.width = 150 + Math.random() * 100;
 		platforms.push(platform);
 		game.addChild(platform);
+		// Add jar on some platforms (60% chance)
+		if (Math.random() < 0.6) {
+			var jar = new Jar();
+			jar.x = platform.x;
+			jar.y = platform.y - platform.height / 2;
+			jars.push(jar);
+			game.addChild(jar);
+		}
 	}
 }
 function spawnEnemy() {
 	var enemy = new Enemy();
@@ -243,8 +281,19 @@
 				projectile.destroy();
 				projectiles.splice(p, 1);
 				break;
 			}
+			// Check jar hits
+			for (var j = jars.length - 1; j >= 0; j--) {
+				var jar = jars[j];
+				if (!jar.broken && projectile.intersects(jar)) {
+					jar.breakJar();
+					jars.splice(j, 1);
+					projectile.destroy();
+					projectiles.splice(p, 1);
+					break;
+				}
+			}
 		}
 	}
 	// Check ninja vs enemy collisions
 	for (var e = enemies.length - 1; e >= 0; e--) {