var allowPresentAngle = false;
var Button = Container.expand(function (label, onClick) {
	var self = Container.call(this);
	var buttonGraphics = self.createAsset('button', label, 0.5, 0.5);
	buttonGraphics.scale.set(4);
	buttonGraphics.interactive = true;
	buttonGraphics.buttonMode = true;
	var nameLabel = new Text2(label.split(' ').reduce(function (acc, word) {
		if (acc.length && acc[acc.length - 1].length + word.length <= 12) {
			acc[acc.length - 1] += ' ' + word;
		} else {
			acc.push(word);
		}
		return acc;
	}, []).join('\n'), {
		size: 50,
		fill: '#ffffff',
		align: 'center'
	});
	nameLabel.anchor.set(0.5);
	nameLabel.y = -buttonGraphics.height / 2 - (label.length > 12 ? 25 : 0) + 40;
	self.addChild(nameLabel);
	var descriptionLabel = new Text2(label.split(' ').reduce(function (acc, word) {
		if (acc.length && acc[acc.length - 1].length + word.length <= 12) {
			acc[acc.length - 1] += ' ' + word;
		} else {
			acc.push(word);
		}
		return acc;
	}, []).join('\n') + ' Description', {
		size: 30,
		fill: '#ffffff'
	});
	descriptionLabel.anchor.set(0.5);
	descriptionLabel.y = buttonGraphics.height / 2 + 240;
	if (label === 'Pitching Arm!') {
		descriptionLabel.setText('Throw more presents');
	} else if (label === 'More Reindeer!') {
		descriptionLabel.setText('Fly faster');
	} else if (label === 'Time Zones!') {
		descriptionLabel.setText('Add 10 seconds');
	}
	descriptionLabel.anchor.set(0.5);
	descriptionLabel.x = 0;
	self.addChild(descriptionLabel);
	self.on('down', function (obj) {
		onClick();
	});
});
var Present = Container.expand(function () {
	var self = Container.call(this);
	var presentGraphics = self.createAsset('present', 'Present Graphics', .5, .5);
	self.speed = -10;
	self.speedX = 0;
	self.speedY = self.speed;
	self.lastMoved = LK.ticks;
	self.isCounter = false;
	self.move = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.lastMoved = LK.ticks;
		if (self.counterLifetime && LK.ticks > self.counterLifetime) {
			self.destroy();
		}
	};
});
var NaughtyHouse = Container.expand(function () {
	var self = Container.call(this);
	NaughtyHouse.prototype.spawnCounterPresent = function () {
		var counterPresent = new Present();
		counterPresent.x = this.x;
		counterPresent.y = this.y;
		var angle = Math.random() < 0.5 ? 240 : 300;
		angle *= Math.PI / 180;
		counterPresent.speedX = counterPresent.speed * Math.cos(angle);
		counterPresent.speedY = counterPresent.speed * Math.sin(angle);
		counterPresent.counterLifetime = LK.ticks + 60;
		counterPresent.isCounter = true;
		return counterPresent;
	};
	var houseGraphics = self.createAsset('naughtyHouse', 'Naughty House Graphics', .5, .5);
	houseGraphics.tint = 0xFF0000;
	self.speed = 2;
	self.lastMoved = LK.ticks;
	self.move = function () {
		self.y += self.speed;
		self.lastMoved = LK.ticks;
		if (self.y > 2732 + self.height) {
			self.destroy();
		}
	};
});
var NiceHouse = Container.expand(function () {
	var self = Container.call(this);
	var houseGraphics = self.createAsset('niceHouse', 'Nice House Graphics', .5, .5);
	houseGraphics.tint = 0x00FF00;
	self.speed = 2;
	self.hitCount = 0;
	self.move = function () {
		self.y += self.speed;
		if (self.y > 2732 + self.height) {
			self.destroy();
		}
	};
});
var HappyHouse = Container.expand(function () {
	var self = Container.call(this);
	var houseGraphics = self.createAsset('happyHouse', 'Happy House Graphics', .5, .5);
	houseGraphics.tint = 0xFFFF00;
	self.speed = 2;
	self.move = function () {
		self.y += self.speed;
		if (self.y > 2732 + self.height) {
			self.destroy();
		}
	};
});
var DarkHouse = Container.expand(function () {
	var self = Container.call(this);
	var houseGraphics = self.createAsset('darkHouse', 'Dark House Graphics', .5, .5);
	houseGraphics.tint = 0x808080;
	self.speed = 2;
	self.move = function () {
		self.y += self.speed;
		if (self.y > 2732 + self.height) {
			self.destroy();
		}
	};
});
var Santa = Container.expand(function () {
	var self = Container.call(this);
	var santaGraphics = self.createAsset('santa', 'Santa Graphics', .5, .5);
	self.targetPosition = null;
	self.moveSpeed = 5;
	self.move = function (position) {
		if (position) {
			self.targetPosition = position;
		}
		if (self.targetPosition) {
			var dx = self.targetPosition.x - self.x;
			var dy = self.targetPosition.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance > 1) {
				var angle = Math.atan2(dy, dx);
				var tentativeX = self.x + Math.cos(angle) * self.moveSpeed;
				var tentativeY = self.y + Math.sin(angle) * self.moveSpeed;
				self.x = tentativeX;
				if (tentativeY > 2732 - 2732 / 3) {
					self.y = tentativeY;
				}
			} else {
				if (self.targetPosition.y > 2732 - 2732 / 3) {
					self.x = self.targetPosition.x;
					self.y = self.targetPosition.y;
				}
				self.targetPosition = null;
			}
		}
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	function startPresentFrenzy() {
		var originalFireRate = presentFireRate;
		var originalPresentSpeed = Present.prototype.speed;
		presentFireRate /= 5;
		Present.prototype.speed *= 2;
		var frenzyTimeout = LK.setTimeout(function () {
			presentFireRate = originalFireRate;
			Present.prototype.speed = originalPresentSpeed;
			allowPresentAngle = false;
		}, 7000);
		allowPresentAngle = true;
	}
	function checkRankUp() {
		var xpThreshold = Math.floor(6 * Math.pow(1.20, rank - 1));
		if (xp >= xpThreshold) {
			rank++;
			xp = 0;
			rankTxt.setText('Rank: ' + rank);
			updateXPDisplay();
			self.spawnButtons();
		}
	}
	var countdown = 100;
	var score = 0;
	var naughtyToNiceConversionRate = 3;
	var humanKindnessActive = false;
	var scoreTxt = new Text2('Score: ' + score, {
		size: 75,
		fill: "#ffffff"
	});
	scoreTxt.anchor.set(0, 0);
	scoreTxt.x += 50;
	scoreTxt.y += 30;
	LK.gui.topLeft.addChild(scoreTxt);
	var timerTxt = new Text2(countdown.toString(), {
		size: 150,
		fill: "#ffffff"
	});
	timerTxt.anchor.set(.5, 0);
	LK.gui.topCenter.addChild(timerTxt);
	var xp = 0;
	var rank = 1;
	var rankTxt = new Text2('Rank: ' + rank, {
		size: 75,
		fill: "#ffffff"
	});
	rankTxt.anchor.set(0, 0);
	rankTxt.x = timerTxt.x + timerTxt.width + 180;
	rankTxt.y = scoreTxt.y;
	LK.gui.topCenter.addChild(rankTxt);
	var xpDisplayTxt = new Text2(xp + ' / ' + Math.floor(6 * Math.pow(1.20, rank - 1)), {
		size: 75,
		fill: "#ffffff"
	});
	xpDisplayTxt.anchor.set(0, 0);
	xpDisplayTxt.x = rankTxt.x + 20;
	xpDisplayTxt.y = rankTxt.y + rankTxt.height + 20;
	LK.gui.topCenter.addChild(xpDisplayTxt);
	function updateXPDisplay() {
		var xpThreshold = Math.floor(6 * Math.pow(1.20, rank - 1));
		xpDisplayTxt.setText(xp + ' / ' + xpThreshold);
	}
	function addXP(amount) {
		if (amount > 0) {
			xp += amount;
			checkRankUp();
		}
		updateXPDisplay();
	}
	var timer = LK.setInterval(function () {
		countdown--;
		timerTxt.setText(countdown.toString());
		if (countdown <= 0) {
			LK.clearInterval(timer);
			LK.showGameOver();
		}
	}, 1000);
	var houses = [];
	var buttons = [];
	self.spawnButtons = function () {
		buttons.forEach(function (button) {
			button.destroy();
		});
		buttons = [];
		var powerups = [{
			label: 'Pitching Arm!',
			action: function () {
				presentFireRate *= 0.65;
			}
		}, {
			label: 'More Reindeer!',
			action: function () {
				santa.moveSpeed *= 1.6;
			}
		}, {
			label: 'Time Zones!',
			action: function () {
				countdown += 10;
				timerTxt.setText(countdown.toString());
			}
		}, {
			label: 'Present Frenzy!',
			action: function () {
				startPresentFrenzy();
			}
		}, {
			label: 'Human Kindness!',
			action: function () {
				humanKindnessActive = true;
			}
		}, {
			label: 'Naughty Deflector!',
			action: function () {
				NaughtyHouse.prototype.requiredHitCount = 2;
			}
		}, {
			label: 'Joyous!',
			action: function () {
				score += Math.ceil(score * 0.2);
				scoreTxt.setText('Score: ' + score);
			}
		}, {
			label: 'Rocket Sleigh!',
			action: function () {
				NaughtyHouse.prototype.speed += 2;
				NiceHouse.prototype.speed += 2;
				HappyHouse.prototype.speed += 2;
				DarkHouse.prototype.speed += 2;
			}
		}];
		var chosenPowerups = powerups.sort(function () {
			return Math.random() - Math.random();
		}).slice(0, 2);
		chosenPowerups.forEach(function (powerup, index) {
			var button = new Button(powerup.label, function () {
				powerup.action();
				buttons.forEach(function (btn) {
					btn.destroy();
				});
			});
			button.x = 2048 / 2 + (index === 0 ? -300 : 300);
			button.y = 2732 / 2 - 100;
			buttons.push(button);
			self.addChild(button);
		});
	};
	self.spawnHouse = function () {
		var nextSpawnTime = Math.random() * 1000 + 1000;
		var newHouseX = Math.random() * 2048;
		var newHouseY = -Math.random() * 500;
		var canSpawn = true;
		for (var i = 0; i < houses.length; i++) {
			var house = houses[i];
			if (Math.abs(newHouseX - house.x) < house.width && Math.abs(newHouseY - house.y) < house.height) {
				canSpawn = false;
				break;
			}
		}
		if (canSpawn) {
			var houseTypes = [NaughtyHouse, NiceHouse];
			var naughtyCount = houses.reduce(function (acc, house) {
				return acc + (house instanceof NaughtyHouse ? 1 : 0);
			}, 0);
			var randomIndex;
			if (humanKindnessActive && naughtyCount % 2 === 0) {
				randomIndex = 1;
			} else {
				randomIndex = Math.random() < 0.5 ? 0 : 1;
			}
			var house = new houseTypes[randomIndex]();
			house.x = newHouseX;
			house.y = newHouseY;
			houses.push(house);
			var buttonIndex = buttons.length > 0 ? self.children.indexOf(buttons[0]) : self.children.length;
			buttonIndex = buttonIndex === -1 ? self.children.length : buttonIndex;
			self.addChildAt(house, buttonIndex);
		}
		LK.setTimeout(self.spawnHouse, nextSpawnTime);
	};
	self.spawnHouse();
	var houses = [];
	var presents = [];
	var santa = self.addChild(new Santa());
	santa.x = 2048 / 2;
	santa.y = 2732 - 2732 * 0.1;
	var presentFireRate = 81;
	var presentFireCounter = 0;
	stage.on('down', function (obj) {
		var pos = obj.event.getLocalPosition(self);
		santa.move(pos);
	});
	LK.on('tick', function () {
		santa.move();
		if (presentFireCounter++ >= presentFireRate) {
			var present = new Present();
			present.x = santa.x;
			present.y = santa.y;
			if (allowPresentAngle) {
				var angle = (Math.random() * 20 + 80) * (Math.PI / 180);
				present.speedX = present.speed * Math.cos(angle);
				present.speedY = present.speed * Math.sin(angle);
			} else {
				present.speedX = 0;
				present.speedY = present.speed;
			}
			presents.push(present);
			var buttonIndex = buttons.length > 0 ? self.children.indexOf(buttons[0]) : self.children.length;
			buttonIndex = buttonIndex === -1 ? self.children.length : buttonIndex;
			self.addChildAt(present, buttonIndex);
			presentFireCounter = 0;
		}
		for (var i = presents.length - 1; i >= 0; i--) {
			var present = presents[i];
			if (LK.ticks - present.lastMoved > 6) {
				present.destroy();
				presents.splice(i, 1);
				continue;
			}
			present.move();
			for (var j = houses.length - 1; j >= 0; j--) {
				var house = houses[j];
				if (house instanceof NaughtyHouse && present.intersects(house) && !present.isCounter) {
					house.hitCount = (house.hitCount || 0) + 1;
					if (house.hitCount >= (NaughtyHouse.prototype.requiredHitCount || 1)) {
						var darkHouse = new DarkHouse();
						darkHouse.x = house.x;
						darkHouse.y = house.y;
						houses[j] = darkHouse;
						self.addChild(darkHouse);
						score = Math.max(0, score - 1);
						scoreTxt.setText('Score: ' + score);
						house.destroy();
					} else {
						var counterPresent = house.spawnCounterPresent();
						presents.push(counterPresent);
						self.addChild(counterPresent);
					}
					present.destroy();
					presents.splice(i, 1);
					break;
				} else if (house instanceof NiceHouse && present.intersects(house)) {
					house.hitCount++;
					score++;
					addXP(1);
					scoreTxt.setText('Score: ' + score);
					present.destroy();
					presents.splice(i, 1);
					if (house.hitCount >= 3) {
						var happyHouse = new HappyHouse();
						happyHouse.x = house.x;
						happyHouse.y = house.y;
						houses[j] = happyHouse;
						self.addChild(happyHouse);
						house.destroy();
					}
					break;
				}
			}
			if (present.y < -present.height) {
				present.destroy();
				presents.splice(i, 1);
			}
		}
		for (var i = houses.length - 1; i >= 0; i--) {
			var house = houses[i];
			if (LK.ticks - house.lastMoved > 6) {
				house.destroy();
				houses.splice(i, 1);
				continue;
			}
			house.move();
			if (house.y > 2732 + house.height) {
				houses.splice(i, 1);
			}
		}
	});
});

===================================================================
--- original.js
+++ change.js
@@ -237,9 +237,8 @@
 			LK.showGameOver();
 		}
 	}, 1000);
 	var houses = [];
-	self.shouldSpawnHouse = false;
 	var buttons = [];
 	self.spawnButtons = function () {
 		buttons.forEach(function (button) {
 			button.destroy();
@@ -284,16 +283,12 @@
 			}
 		}, {
 			label: 'Rocket Sleigh!',
 			action: function () {
-				NaughtyHouse.prototype.speed *= 2;
-				NiceHouse.prototype.speed *= 2;
-				HappyHouse.prototype.speed *= 2;
-				DarkHouse.prototype.speed *= 2;
-				self.spawnHouse = function () {
-					var nextSpawnTime = (Math.random() * 1000 + 1000) / 2;
-					self.shouldSpawnHouse = true;
-				};
+				NaughtyHouse.prototype.speed += 2;
+				NiceHouse.prototype.speed += 2;
+				HappyHouse.prototype.speed += 2;
+				DarkHouse.prototype.speed += 2;
 			}
 		}];
 		var chosenPowerups = powerups.sort(function () {
 			return Math.random() - Math.random();
@@ -356,13 +351,8 @@
 		var pos = obj.event.getLocalPosition(self);
 		santa.move(pos);
 	});
 	LK.on('tick', function () {
-		if (self.shouldSpawnHouse) {
-			var nextSpawnTime = Math.random() * 1000 + 1000;
-			LK.setTimeout(self.spawnHouse, nextSpawnTime);
-			self.shouldSpawnHouse = false;
-		}
 		santa.move();
 		if (presentFireCounter++ >= presentFireRate) {
 			var present = new Present();
 			present.x = santa.x;