var Floor = Container.expand(function () {
	var self = Container.call(this);
	var floorGraphics = self.createAsset('floor', 'Floor platform', 0, 1);
	floorGraphics.width = 2048;
	self.spawn = function (x, y) {
		this.x = x;
		this.y = y;
	};
});
var Monkey = Container.expand(function () {
	var self = Container.call(this);
	var monkeyGraphics = self.createAsset('monkey', 'Monkey character', .5, .5);
	monkeyGraphics.scale.x *= 1;
	self.jumpCount = 0;
	self.jumpHeight = 100;
	self.gravity = 5;
	self.velocityY = 0;
	self.move = function (direction) {
		if (direction === 'left') {
			this.x -= 20;
			monkeyGraphics.scale.x = 1;
		} else if (direction === 'right') {
			this.x += 20;
			monkeyGraphics.scale.x = -1;
		}
	};
	self.jump = function () {
		if (this.jumpCount < 2) {
			this.velocityY = -this.jumpHeight;
			this.jumpCount++;
			this.onPlatform = false;
		}
	};
	self.collectBanana = function () {};
});
var BlueBanana = Container.expand(function () {
	var self = Container.call(this);
	var bananaGraphics = self.createAsset('banana', 'Banana collectible', .5, .5);
	self.spawn = function () {
		this.x = Math.random() * 2048;
		this.y = 0;
		this.velocityY = 2;
	};
	self.fall = function () {
		this.y += this.velocityY;
		if (this.y > 2732) {
			this.destroy();
		}
	};
});
var Platform = Container.expand(function () {
	var self = Container.call(this);
	var platformGraphics = self.createAsset('platform', 'Platform for monkey to jump on', .5, .5);
	self.spawn = function (x, y) {
		this.x = Math.random() * 2048;
		this.y = y;
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	var background = self.createAsset('background', 'Game background', 0, 0);
	background.width = 2048;
	background.height = 2732;
	var monkey = self.addChild(new Monkey());
	self.bananas = [];
	var platforms = [];
	var floor = self.addChild(new Floor());
	floor.spawn(0, 2732 - floor.height + 100);
	var leftButton = self.createAsset('leftButton', 'Left control button', 0, 1);
	var rightButton = self.createAsset('rightButton', 'Right control button', 1, 1);
	leftButton.x = 100;
	leftButton.y = 2732 - leftButton.height - 100;
	rightButton.x = 2048 - rightButton.width - 100;
	rightButton.y = 2732 - rightButton.height - 100;
	var leftJumpButton = self.createAsset('jumpButton', 'Jump control button', 0, 1);
	leftJumpButton.x = leftButton.x;
	leftJumpButton.y = leftButton.y + leftButton.height + 50;
	leftJumpButton.on('down', function () {
		monkey.jump();
	});
	var rightJumpButton = self.createAsset('jumpButton', 'Jump control button', 1, 1);
	rightJumpButton.x = rightButton.x;
	rightJumpButton.y = rightButton.y + rightButton.height + 50;
	rightJumpButton.on('down', function () {
		monkey.jump();
	});
	for (var i = 0; i < 5; i++) {
		var platform = new Platform();
		if (i !== 0) {
			platform.spawn(i * 500, 2732 - i * 200 - rightButton.height - 100);
		}
		platforms.push(platform);
		self.addChild(platform);
		var banana = self.createAsset('banana', 'Banana collectible', .5, .5);
		banana.x = platform.x + platform.width / 2 - 100;
		banana.y = platform.y - banana.height / 2 - 50;
		self.addChild(banana);
	}
	var scoreTxt = new Text2('0', {
		size: 150,
		fill: "#ffffff"
	});
	LK.gui.topCenter.addChild(scoreTxt);
	var blueBananas = [];
	var timer = LK.setInterval(function () {
		if (LK.ticks % 200 === 0) {
			var blueBanana = new BlueBanana();
			blueBanana.spawn();
			blueBananas.push(blueBanana);
			self.addChild(blueBanana);
		}
	});
	monkey.x = 500;
	monkey.y = 2732 - monkey.height - 200;
	var leftClickCount = 0;
	leftButton.on('down', function () {
		this.moveLeft = true;
		this.y -= 10;
	});
	leftButton.on('up', function () {
		this.moveLeft = false;
		this.y += 10;
		monkey.move('left');
	});
	leftButton.on('move', function (obj) {
		var event = obj.event;
		var pos = event.getLocalPosition(self);
		if (pos.y < this.y) {}
	});
	rightButton.on('down', function () {
		this.moveRight = true;
		this.y -= 10;
	});
	rightButton.on('up', function () {
		this.moveRight = false;
		this.y += 10;
		monkey.move('right');
	});
	rightButton.on('move', function (obj) {
		var event = obj.event;
		var pos = event.getLocalPosition(self);
		if (pos.y < this.y) {}
	});
	LK.on('tick', function () {
		if (leftButton.moveLeft) {
			monkey.move('left');
		}
		if (rightButton.moveRight) {
			monkey.move('right');
		}
		if (!monkey.onPlatform) {
			monkey.velocityY += monkey.gravity;
		}
		monkey.y += monkey.velocityY;
		if (monkey.y > 2732 - monkey.height) {
			monkey.y = 2732 - monkey.height;
			monkey.velocityY = 0;
			monkey.jumpCount = 0;
		}
		for (var i = 0; i < blueBananas.length; i++) {
			if (monkey.intersects(blueBananas[i])) {
				monkey.collectBanana();
				blueBananas[i].destroy();
				blueBananas.splice(i, 1);
			}
		}
		for (var i = 0; i < platforms.length; i++) {
			if (monkey.velocityY > 0 && monkey.y + monkey.height <= platforms[i].y && monkey.y + monkey.height + monkey.velocityY >= platforms[i].y && monkey.x + monkey.width > platforms[i].x && monkey.x < platforms[i].x + platforms[i].width) {
				monkey.y = platforms[i].y - monkey.height;
				monkey.velocityY = 0;
				monkey.jumpCount = 0;
				monkey.onPlatform = true;
				if (monkey.x + monkey.width > platforms[i].x + platforms[i].width) {
					monkey.x = platforms[i].x + platforms[i].width - monkey.width;
				}
				if (monkey.x < platforms[i].x) {
					monkey.x = platforms[i].x;
				}
			}
		}
		for (var i = 0; i < blueBananas.length; i++) {
			blueBananas[i].fall();
			if (blueBananas[i].y > 2732) {
				blueBananas[i].destroy();
				blueBananas.splice(i, 1);
			}
		}
		if (monkey.y < platforms[platforms.length - 1].y - 200) {
			var platform = new Platform();
			platform.spawn(platforms[platforms.length - 1].x, platforms[platforms.length - 1].y - 200);
			platforms.push(platform);
			self.addChild(platform);
		}
	});
});

===================================================================
--- original.js
+++ change.js
@@ -42,8 +42,11 @@
 		this.velocityY = 2;
 	};
 	self.fall = function () {
 		this.y += this.velocityY;
+		if (this.y > 2732) {
+			this.destroy();
+		}
 	};
 });
 var Platform = Container.expand(function () {
 	var self = Container.call(this);