/**** 
* Classes
****/
var Dot = Container.expand(function () {
	var self = Container.call(this);
	var dotGraphics = self.attachAsset('dot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityY = 0;
	self.gravity = 0.5;
	self.bounce = -15;
	self.update = function () {
		self.velocityY += self.gravity;
		self.y += self.velocityY;
		if (self.y > 2732 - self.height / 2) {
			self.velocityY = self.bounce;
		}
	};
	self.bounceUp = function () {
		self.velocityY = self.bounce;
	};
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.direction = Math.random() < 0.5 ? -1 : 1;
	self.speed = 5 * self.direction;
	self.move = function (offsetY) {
		self.x += self.speed;
		if (self.direction === 1 && self.x > 2048 + self.width / 2 || self.direction === -1 && self.x < -self.width / 2) {
			self.direction *= -1;
			self.speed *= -1;
			self.x = self.direction === 1 ? -self.width / 2 : 2048 + self.width / 2;
			self.y = Math.random() * (1332 - self.height) + self.height / 2;
		}
		if (offsetY) {
			self.y += offsetY;
		}
	};
});
var Lava = Container.expand(function () {
	var self = Container.call(this);
	var lavaGraphics = self.attachAsset('lava', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 1;
	self.move = function () {
		self.y -= self.speed;
	};
});

/**** 
* Initialize Game
****/
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/
var dot = game.addChild(new Dot());
dot.x = 2048 / 2;
dot.y = 2732 / 2;
var obstacles = [];
for (var i = 0; i < 15; i++) {
	var obstacle = game.addChild(new Obstacle());
	obstacle.direction = Math.random() < 0.5 ? -1 : 1;
	obstacle.x = obstacle.direction === 1 ? -i * 450 : 2048 + i * 450;
	obstacle.y = i * 500 + obstacle.height / 2;
	obstacles.push(obstacle);
}
var lava = game.addChild(new Lava());
lava.x = 2048 / 2;
lava.y = 2732 - lava.height / 2;
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
scoreTxt.x = 2048 / 2;
scoreTxt.y = 50;
LK.gui.top.addChild(scoreTxt);
game.on('down', function (obj) {
	dot.bounceUp();
});
LK.on('tick', function () {
	var previousY = dot.y;
	dot.update();
	var offsetY = previousY - dot.y;
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i].move(dot.y < 1400 && offsetY > 0 ? offsetY : 0);
		if (dot.intersects(obstacles[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	// Update score based on the dot's survival time
	lava.move();
	if (dot.intersects(lava)) {
		LK.effects.flashScreen(0xff0000, 1000);
		LK.showGameOver();
	}
	var currentScore = Math.floor(LK.ticks / 60);
	LK.setScore(currentScore);
	scoreTxt.setText(LK.getScore().toString());
});

===================================================================
--- original.js
+++ change.js
@@ -41,8 +41,19 @@
 			self.y += offsetY;
 		}
 	};
 });
+var Lava = Container.expand(function () {
+	var self = Container.call(this);
+	var lavaGraphics = self.attachAsset('lava', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 1;
+	self.move = function () {
+		self.y -= self.speed;
+	};
+});
 
 /**** 
 * Initialize Game
 ****/
@@ -63,8 +74,11 @@
 	obstacle.x = obstacle.direction === 1 ? -i * 450 : 2048 + i * 450;
 	obstacle.y = i * 500 + obstacle.height / 2;
 	obstacles.push(obstacle);
 }
+var lava = game.addChild(new Lava());
+lava.x = 2048 / 2;
+lava.y = 2732 - lava.height / 2;
 var scoreTxt = new Text2('0', {
 	size: 150,
 	fill: "#ffffff"
 });
@@ -86,8 +100,13 @@
 			LK.showGameOver();
 		}
 	}
 	// Update score based on the dot's survival time
+	lava.move();
+	if (dot.intersects(lava)) {
+		LK.effects.flashScreen(0xff0000, 1000);
+		LK.showGameOver();
+	}
 	var currentScore = Math.floor(LK.ticks / 60);
 	LK.setScore(currentScore);
 	scoreTxt.setText(LK.getScore().toString());
 });
\ No newline at end of file