/**** 
* 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.throwCooldown = 0;
	self.throwRate = 120; // Start throwing every 2 seconds
	self.update = function () {
		self.throwCooldown--;
		if (self.throwCooldown <= 0) {
			self.throwSlipper();
			self.throwCooldown = self.throwRate;
		}
	};
	self.throwSlipper = function () {
		var slipper = new Slipper();
		slipper.x = self.x;
		slipper.y = self.y;
		// Calculate direction toward player
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		slipper.velocityX = dx / distance * 6;
		slipper.velocityY = dy / distance * 6;
		slippers.push(slipper);
		game.addChild(slipper);
		LK.getSound('throw').play();
	};
	self.setThrowRate = function (rate) {
		self.throwRate = rate;
	};
	return self;
});
var Exit = Container.expand(function () {
	var self = Container.call(this);
	var exitGraphics = self.attachAsset('exit', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Check if player reached exit
		if (self.intersects(player)) {
			if (hasKey) {
				self.onReached();
			} else {
				// Flash red if no key
				LK.effects.flashObject(self, 0xff0000, 300);
			}
		} else {
			// Add visual feedback when player is close to exit
			var dx = player.x - self.x;
			var dy = player.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < 300) {
				// Make exit glow when player is near - green if has key, red if not
				var color = hasKey ? 0x00ff00 : 0xff0000;
				exitGraphics.tint = color;
				exitGraphics.alpha = 0.7 + Math.sin(LK.ticks * 0.1) * 0.3;
			} else {
				exitGraphics.tint = 0xFFFFFF;
				exitGraphics.alpha = 1;
			}
		}
	};
	self.onReached = function () {
		LK.getSound('complete').play();
		LK.setScore(LK.getScore() + 100);
		scoreTxt.setText(LK.getScore());
		// Add door opening animation
		tween(exitGraphics, {
			scaleX: 1.5,
			scaleY: 1.5,
			alpha: 0
		}, 500, function () {
			// Check if score has reached 70000 before advancing section
			if (LK.getScore() >= 70000) {
				currentSection++;
				// Change background when reaching score threshold
				game.setBackgroundColor(0x2c3e50);
				if (currentSection > maxSections) {
					LK.showYouWin();
				} else {
					setupSection();
				}
			} else {
				// If score hasn't reached 70000, restart current section
				setupSection();
			}
		});
	};
	return self;
});
var Key = Container.expand(function () {
	var self = Container.call(this);
	var keyGraphics = self.attachAsset('slipper', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xFFD700
	});
	keyGraphics.rotation = Math.PI / 4;
	self.collected = false;
	self.update = function () {
		// Rotate key for visual effect
		keyGraphics.rotation += 0.05;
		// Bob up and down
		self.y += Math.sin(LK.ticks * 0.1) * 0.5;
		// Check if player collected key
		if (self.intersects(player) && !self.collected) {
			self.collected = true;
			hasKey = true;
			LK.effects.flashObject(self, 0xFFD700, 500);
			LK.setScore(LK.getScore() + 50);
			scoreTxt.setText(LK.getScore());
			self.shouldRemove = true;
		}
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 3;
	self.speed = 8;
	self.invulnerable = false;
	self.invulnerableTime = 0;
	self.update = function () {
		if (self.invulnerable) {
			self.invulnerableTime--;
			if (self.invulnerableTime <= 0) {
				self.invulnerable = false;
				playerGraphics.alpha = 1;
			} else {
				playerGraphics.alpha = Math.sin(self.invulnerableTime * 0.3) * 0.5 + 0.5;
			}
		}
		// Keep player within bounds
		if (self.x < 40) self.x = 40;
		if (self.x > 2008) self.x = 2008;
		if (self.y < 40) self.y = 40;
		if (self.y > 2692) self.y = 2692;
	};
	self.takeDamage = function () {
		if (self.invulnerable) return;
		self.health--;
		self.invulnerable = true;
		self.invulnerableTime = 120; // 2 seconds at 60fps
		LK.getSound('hit').play();
		LK.effects.flashObject(self, 0xff0000, 500);
		if (self.health <= 0) {
			LK.showGameOver();
		}
	};
	return self;
});
var Slipper = Container.expand(function () {
	var self = Container.call(this);
	var slipperGraphics = self.attachAsset('slipper', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.lifetime = 300; // 5 seconds at 60fps
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
		self.lifetime--;
		// Remove if off screen or lifetime expired
		if (self.x < -100 || self.x > 2148 || self.y < -100 || self.y > 2832 || self.lifetime <= 0) {
			self.shouldRemove = true;
		}
		// Check collision with walls
		for (var i = 0; i < walls.length; i++) {
			if (self.intersects(walls[i])) {
				self.shouldRemove = true;
				break;
			}
		}
		// Check collision with player
		if (self.intersects(player) && !player.invulnerable) {
			player.takeDamage();
			self.shouldRemove = true;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x34495e
});

/**** 
* Game Code
****/ 
var player;
var enemies = [];
var slippers = [];
var keys = [];
var walls = [];
var exit;
var currentSection = 1;
var maxSections = 5;
var dragNode = null;
var hasKey = false;
// UI Elements
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var healthTxt = new Text2('Health: 3', {
	size: 60,
	fill: 0xFFFFFF
});
healthTxt.anchor.set(0, 0);
healthTxt.x = 120;
healthTxt.y = 120;
LK.gui.topLeft.addChild(healthTxt);
var sectionTxt = new Text2('Section: 1', {
	size: 60,
	fill: 0xFFFFFF
});
sectionTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(sectionTxt);
function setupSection() {
	// Clear existing enemies and slippers
	for (var i = 0; i < enemies.length; i++) {
		enemies[i].destroy();
	}
	enemies = [];
	for (var i = 0; i < slippers.length; i++) {
		slippers[i].destroy();
	}
	slippers = [];
	for (var i = 0; i < keys.length; i++) {
		keys[i].destroy();
	}
	keys = [];
	for (var i = 0; i < walls.length; i++) {
		walls[i].destroy();
	}
	walls = [];
	// Update UI
	sectionTxt.setText('Section: ' + currentSection);
	// Reset player position
	player.x = 200;
	player.y = 2600;
	// Reset key status
	hasKey = false;
	// Create key for this section
	var key = new Key();
	key.x = 1000 + Math.random() * 600;
	key.y = 1000 + Math.random() * 800;
	keys.push(key);
	game.addChild(key);
	// Create exit
	if (exit) {
		exit.destroy();
	}
	exit = new Exit();
	exit.x = 1800;
	exit.y = 200;
	game.addChild(exit);
	// Add door entrance animation
	var exitGraphics = exit.children[0];
	exitGraphics.scaleX = 0.1;
	exitGraphics.scaleY = 0.1;
	exitGraphics.alpha = 0;
	tween(exitGraphics, {
		scaleX: 1,
		scaleY: 1,
		alpha: 1
	}, 800);
	// Create enemies based on section
	var enemyCount = Math.min(currentSection, 3);
	for (var i = 0; i < enemyCount; i++) {
		var enemy = new Enemy();
		enemy.x = 400 + i * 600;
		enemy.y = 400 + i * 300;
		// Increase difficulty by reducing throw rate
		var throwRate = Math.max(60, 120 - currentSection * 10);
		enemy.setThrowRate(throwRate);
		enemies.push(enemy);
		game.addChild(enemy);
	}
	// Add some walls for cover
	for (var i = 0; i < 3; i++) {
		var wall = game.addChild(LK.getAsset('wall', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 600 + i * 400,
			y: 1000 + i * 200,
			scaleX: 3,
			scaleY: 6
		}));
		walls.push(wall);
	}
}
function handleMove(x, y, obj) {
	if (dragNode) {
		dragNode.x = x;
		dragNode.y = y;
	}
}
// Initialize game
player = new Player();
game.addChild(player);
setupSection();
// Event handlers
game.move = handleMove;
game.down = function (x, y, obj) {
	dragNode = player;
	handleMove(x, y, obj);
};
game.up = function (x, y, obj) {
	dragNode = null;
};
game.update = function () {
	// Update health display
	healthTxt.setText('Health: ' + player.health);
	// Update slippers
	for (var i = slippers.length - 1; i >= 0; i--) {
		var slipper = slippers[i];
		if (slipper.shouldRemove) {
			slipper.destroy();
			slippers.splice(i, 1);
		}
	}
	// Update keys
	for (var i = keys.length - 1; i >= 0; i--) {
		var key = keys[i];
		if (key.shouldRemove) {
			key.destroy();
			keys.splice(i, 1);
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -100,9 +100,9 @@
 	return self;
 });
 var Key = Container.expand(function () {
 	var self = Container.call(this);
-	var keyGraphics = self.attachAsset('player', {
+	var keyGraphics = self.attachAsset('slipper', {
 		anchorX: 0.5,
 		anchorY: 0.5,
 		tint: 0xFFD700
 	});