var MAX_ROTATION_SPEED = 0.01;
var Bee = Container.expand(function () {
	var self = Container.call(this);
	self.beeJumping = false;
	var beeGraphics = self.createAsset('bee', 'Bee character', .5, .5);
	beeGraphics.scale.set(2);
	self.speed = 5;
	self.collectNectar = function () {};
	self.update = function () {
		if (self.beeJumping) {
			self.x += self.speed * Math.cos(self.rotation - Math.PI);
			self.y += self.speed * Math.sin(self.rotation - Math.PI);
		}
		if (self.x < 0 || self.x > 2048 || self.y < 0 || self.y > 2732) {
			LK.showGameOver();
		}
	};
	Object.defineProperty(self, 'height', {
		get: function () {
			return beeGraphics.height;
		}
	});
});
var Flower = Container.expand(function () {
	var self = Container.call(this);
	var flowerType = Math.floor(Math.random() * 8) + 1;
	var flowerGraphics = self.createAsset('flower' + flowerType, 'Flower Type ' + flowerType, .5, .5);
	var randomScale = Math.random() * 2 + 2;
	flowerGraphics.scale.set(randomScale);
	self.addChild(flowerGraphics);
	for (var i = 1; i <= 8; i++) {
		LK.getAsset('flower' + i, 'Flower Type ' + i, .5, .5);
	}
	self.rotationStep = (Math.random() < 0.5 ? -1 : 1) * MAX_ROTATION_SPEED;
	self.produceNectar = function () {};
	self.update = function () {
		self.rotation += self.rotationStep;
	};
});
var Nectar = Container.expand(function () {
	var self = Container.call(this);
	var nectarGraphics = self.createAsset('nectar', 'Nectar', .5, .5);
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	var bee = self.addChild(new Bee());
	var flowers = [self.addChild(new Flower()), self.addChild(new Flower()), self.addChild(new Flower())];
	flowers[0].y = 400;
	flowers[1].y = 1100;
	flowers[2].y = 1800;
	flowers[0].x = 904;
	flowers[1].x = 1200;
	flowers[2].x = 1024;
	flowers.forEach(function (flower, index) {
		flower.y += flower.height / 2;
	});
	var nectars = [];
	var scoreTxt = new Text2('0', {
		size: 150,
		fill: "#ffffff"
	});
	LK.gui.topCenter.addChild(scoreTxt);
	var isGameOver = false;
	bee.x = 1024;
	bee.y = 2732 - bee.height - 100;
	LK.on('tick', function () {
		bee.update();
		flowers.forEach(function (flower) {
			if (bee.intersects(flower)) {
				bee.speed = 0;
			}
		});
		if (isGameOver) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
		for (var i = 0; i < flowers.length; i++) {
			flowers[i].produceNectar();
			flowers[i].update();
		}
		for (var j = 0; j < nectars.length; j++) {
			if (bee.intersects(nectars[j])) {
				bee.collectNectar();
				nectars[j].destroy();
				nectars.splice(j, 1);
			}
		}
	});
	stage.on('down', function (obj) {
		bee.beeJumping = true;
	});
});

===================================================================
--- original.js
+++ change.js
@@ -7,10 +7,10 @@
 	self.speed = 5;
 	self.collectNectar = function () {};
 	self.update = function () {
 		if (self.beeJumping) {
-			self.x += self.speed * Math.cos(self.rotation);
-			self.y += self.speed * Math.sin(self.rotation);
+			self.x += self.speed * Math.cos(self.rotation - Math.PI);
+			self.y += self.speed * Math.sin(self.rotation - Math.PI);
 		}
 		if (self.x < 0 || self.x > 2048 || self.y < 0 || self.y > 2732) {
 			LK.showGameOver();
 		}