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

/**** 
* Classes
****/ 
var Crane = Container.expand(function () {
	var self = Container.call(this);
	var craneGraphics = self.attachAsset('crane', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.direction = 1;
	self.speed = 2;
	self.update = function () {
		self.x += self.direction * self.speed;
		// Bounce off edges
		if (self.x <= 200) {
			self.direction = 1;
		} else if (self.x >= 1848) {
			self.direction = -1;
		}
	};
	return self;
});
var Hook = Container.expand(function () {
	var self = Container.call(this);
	var hookGraphics = self.attachAsset('hook', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.hasContainer = false;
	self.attachedContainer = null;
	self.update = function () {
		// Follow crane position
		self.x = crane.x;
		// Move attached container with hook
		if (self.hasContainer && self.attachedContainer) {
			self.attachedContainer.x = self.x;
			self.attachedContainer.y = self.y + 80;
		}
	};
	return self;
});
var Container = Container.expand(function () {
	var self = Container.call(this);
	var containerGraphics = self.attachAsset('container', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocity = {
		x: 0,
		y: 0
	};
	self.grounded = false;
	self.settled = false;
	self.settleTimer = 0;
	self.update = function () {
		if (!self.grounded) {
			// Apply gravity
			self.velocity.y += 0.8;
			// Update position
			self.x += self.velocity.x;
			self.y += self.velocity.y;
			// Check if hit platform or other containers
			if (self.y >= platformY - 60) {
				var hitSomething = false;
				// Check collision with platform
				if (self.x >= platformX - 200 && self.x <= platformX + 200) {
					self.y = platformY - 60;
					hitSomething = true;
				}
				// Check collision with other containers
				for (var i = 0; i < containers.length; i++) {
					var other = containers[i];
					if (other !== self && other.grounded && self.intersects(other)) {
						self.y = other.y - 120;
						hitSomething = true;
						break;
					}
				}
				if (hitSomething) {
					self.grounded = true;
					self.velocity.y = 0;
					self.velocity.x *= 0.3; // Friction
					self.settleTimer = 60; // 1 second to settle
					LK.getSound('stack').play();
				}
			}
			// Check if fell off screen
			if (self.y > 2732 + 100) {
				self.destroy();
				for (var j = containers.length - 1; j >= 0; j--) {
					if (containers[j] === self) {
						containers.splice(j, 1);
						break;
					}
				}
				LK.showGameOver();
			}
		} else {
			// Container is grounded, check for settling
			if (self.settleTimer > 0) {
				self.settleTimer--;
				if (self.settleTimer <= 0) {
					self.settled = true;
				}
			}
			// Apply slight physics even when grounded for stacking realism
			if (Math.abs(self.velocity.x) > 0.1) {
				self.x += self.velocity.x;
				self.velocity.x *= 0.95; // Gradual friction
			}
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var containers = [];
var crane;
var hook;
var platform;
var ground;
var platformX = 2048 / 2;
var platformY = 2732 - 300;
var scoreText;
var nextContainerTimer = 0;
var gameSpeed = 1;
// Create ground
ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 - 50
}));
// Create platform
platform = game.addChild(LK.getAsset('platform', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: platformX,
	y: platformY
}));
// Create crane
crane = game.addChild(new Crane());
crane.x = 2048 / 2;
crane.y = 200;
// Create hook
hook = game.addChild(new Hook());
hook.x = crane.x;
hook.y = 300;
// Create score display
scoreText = new Text2('Score: 0', {
	size: 80,
	fill: 0x000000
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
function createNewContainer() {
	var newContainer = new Container();
	newContainer.x = hook.x;
	newContainer.y = hook.y + 80;
	containers.push(newContainer);
	game.addChild(newContainer);
	hook.hasContainer = true;
	hook.attachedContainer = newContainer;
}
function dropContainer() {
	if (hook.hasContainer && hook.attachedContainer) {
		hook.attachedContainer.velocity.x = crane.direction * crane.speed * 0.5;
		hook.attachedContainer.velocity.y = 2;
		hook.hasContainer = false;
		hook.attachedContainer = null;
		LK.getSound('drop').play();
		// Increase score
		LK.setScore(LK.getScore() + 10);
		scoreText.setText('Score: ' + LK.getScore());
		// Schedule next container
		nextContainerTimer = 120; // 2 seconds
		// Increase difficulty slightly
		if (LK.getScore() % 100 === 0) {
			crane.speed += 0.5;
		}
	}
}
// Create first container
createNewContainer();
// Touch controls
game.down = function (x, y, obj) {
	dropContainer();
};
// Main game loop
game.update = function () {
	// Handle next container creation
	if (nextContainerTimer > 0) {
		nextContainerTimer--;
		if (nextContainerTimer <= 0 && !hook.hasContainer) {
			createNewContainer();
		}
	}
	// Check for unstable stacks (containers falling off platform)
	for (var i = containers.length - 1; i >= 0; i--) {
		var container = containers[i];
		if (container.grounded && (container.x < platformX - 250 || container.x > platformX + 250)) {
			// Container slid off platform
			LK.effects.flashScreen(0xff0000, 500);
			LK.setTimeout(function () {
				LK.showGameOver();
			}, 500);
			break;
		}
	}
	// Check win condition (very high score)
	if (LK.getScore() >= 500) {
		LK.showYouWin();
	}
};

===================================================================
--- original.js
+++ change.js