/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var Ball = Container.expand(function () {
	var self = Container.call(this);
	var ballGraphics = self.attachAsset('ball', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.gravity = 0.3;
	self.moving = false;
	self.update = function () {
		if (self.moving) {
			self.x += self.velocityX;
			self.y += self.velocityY;
			self.velocityY += self.gravity;
			// Ground collision
			if (self.y >= ballStartY) {
				self.y = ballStartY;
				self.velocityY *= -0.4;
				self.velocityX *= 0.8;
				if (Math.abs(self.velocityX) < 1 && Math.abs(self.velocityY) < 1) {
					self.moving = false;
					self.velocityX = 0;
					self.velocityY = 0;
				}
			}
		}
	};
	self.shoot = function (targetX, targetY, power) {
		var distance = Math.sqrt((targetX - self.x) * (targetX - self.x) + (targetY - self.y) * (targetY - self.y));
		self.velocityX = (targetX - self.x) / distance * power;
		self.velocityY = (targetY - self.y) / distance * power;
		self.moving = true;
		LK.getSound('kick').play();
	};
	return self;
});
var Goalkeeper = Container.expand(function () {
	var self = Container.call(this);
	var keeperGraphics = self.attachAsset('goalkeeper', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.speed = 2 + LK.getScore() * 0.3;
	self.direction = 1;
	self.reactionTime = 0;
	self.maxReactionTime = 30 - LK.getScore() * 2;
	if (self.maxReactionTime < 10) {
		self.maxReactionTime = 10;
	}
	self.update = function () {
		// Random movement
		if (Math.random() < 0.02) {
			self.direction *= -1;
		}
		self.x += self.direction * self.speed;
		// Keep within goal bounds
		if (self.x <= goalX + 50) {
			self.x = goalX + 50;
			self.direction = 1;
		}
		if (self.x >= goalX + goalWidth - 50) {
			self.x = goalX + goalWidth - 50;
			self.direction = -1;
		}
		// React to ball when it's moving toward goal
		if (ball.moving && ball.y < goalY + 100) {
			self.reactionTime++;
			if (self.reactionTime > self.maxReactionTime) {
				if (ball.x < self.x) {
					self.direction = -1;
				} else {
					self.direction = 1;
				}
			}
		} else {
			self.reactionTime = 0;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
// Game dimensions and positions
var fieldY = 2732 - 600;
var goalWidth = 900;
var goalHeight = 400;
var goalX = (2048 - goalWidth) / 2;
var goalY = fieldY - goalHeight;
var ballStartX = 2048 / 2;
var ballStartY = fieldY - 40;
// Game state
var isAiming = false;
var aimStartX = 0;
var aimStartY = 0;
var gameState = 'ready'; // 'ready', 'aiming', 'shooting', 'reset' 
// Create field
var field = game.addChild(LK.getAsset('field', {
	anchorX: 0.5,
	anchorY: 0,
	x: 2048 / 2,
	y: fieldY
}));
// Create goal
var goal = game.addChild(LK.getAsset('goal', {
	anchorX: 0,
	anchorY: 0,
	x: goalX,
	y: goalY
}));
// Create goal posts (visual)
var leftPost = game.addChild(LK.getAsset('aimLine', {
	anchorX: 0.5,
	anchorY: 0,
	x: goalX,
	y: goalY,
	width: 12,
	height: goalHeight,
	color: 0xffffff
}));
var rightPost = game.addChild(LK.getAsset('aimLine', {
	anchorX: 0.5,
	anchorY: 0,
	x: goalX + goalWidth,
	y: goalY,
	width: 12,
	height: goalHeight,
	color: 0xffffff
}));
var crossbar = game.addChild(LK.getAsset('aimLine', {
	anchorX: 0,
	anchorY: 0.5,
	x: goalX,
	y: goalY,
	width: goalWidth,
	height: 12,
	color: 0xffffff
}));
// Create ball
var ball = game.addChild(new Ball());
ball.x = ballStartX;
ball.y = ballStartY;
// Create goalkeeper
var goalkeeper = game.addChild(new Goalkeeper());
goalkeeper.x = goalX + goalWidth / 2;
goalkeeper.y = goalY + goalHeight;
// Create aim line (initially hidden)
var aimLine = game.addChild(LK.getAsset('aimLine', {
	anchorX: 0,
	anchorY: 0.5,
	alpha: 0
}));
// Create score display
var scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Create instruction text
var instructionTxt = new Text2('Drag to aim, release to shoot!', {
	size: 60,
	fill: 0xFFFFFF
});
instructionTxt.anchor.set(0.5, 1);
instructionTxt.y = -50;
LK.gui.bottom.addChild(instructionTxt);
// Game event handlers
game.down = function (x, y, obj) {
	if (gameState === 'ready') {
		gameState = 'aiming';
		isAiming = true;
		aimStartX = x;
		aimStartY = y;
		aimLine.alpha = 1;
	}
};
game.move = function (x, y, obj) {
	if (isAiming && gameState === 'aiming') {
		var dx = x - ball.x;
		var dy = y - ball.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			aimLine.x = ball.x;
			aimLine.y = ball.y;
			aimLine.width = Math.min(distance, 300);
			aimLine.rotation = Math.atan2(dy, dx);
		}
	}
};
game.up = function (x, y, obj) {
	if (isAiming && gameState === 'aiming') {
		isAiming = false;
		aimLine.alpha = 0;
		gameState = 'shooting';
		var dx = x - ball.x;
		var dy = y - ball.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		var power = Math.min(distance / 10, 20);
		ball.shoot(x, y, power);
	}
};
// Reset function
function resetGame() {
	ball.x = ballStartX;
	ball.y = ballStartY;
	ball.moving = false;
	ball.velocityX = 0;
	ball.velocityY = 0;
	gameState = 'ready';
	goalkeeper.reactionTime = 0;
	goalkeeper.speed = 2 + LK.getScore() * 0.3;
	goalkeeper.maxReactionTime = 30 - LK.getScore() * 2;
	if (goalkeeper.maxReactionTime < 10) {
		goalkeeper.maxReactionTime = 10;
	}
}
// Game update loop
game.update = function () {
	// Check for goal
	if (ball.moving && ball.x > goalX && ball.x < goalX + goalWidth && ball.y > goalY && ball.y < goalY + goalHeight && ball.lastY !== undefined && ball.lastY >= goalY) {
		// Check if goalkeeper blocked it
		if (!ball.intersects(goalkeeper)) {
			LK.setScore(LK.getScore() + 1);
			scoreTxt.setText('Score: ' + LK.getScore());
			LK.getSound('goal').play();
			LK.effects.flashScreen(0x00ff00, 500);
			LK.setTimeout(function () {
				resetGame();
			}, 1000);
		}
	}
	// Check for goalkeeper block
	if (ball.moving && ball.intersects(goalkeeper)) {
		LK.getSound('block').play();
		LK.effects.flashScreen(0xff0000, 500);
		LK.showGameOver();
	}
	// Check if ball went off screen or stopped moving for too long
	if (ball.moving && (ball.x < -100 || ball.x > 2148 || ball.y > fieldY + 100)) {
		LK.showGameOver();
	}
	// Check if ball stopped moving and didn't score
	if (!ball.moving && gameState === 'shooting') {
		if (!(ball.x > goalX && ball.x < goalX + goalWidth && ball.y > goalY && ball.y < goalY + goalHeight)) {
			LK.setTimeout(function () {
				LK.showGameOver();
			}, 1000);
		}
	}
	// Track ball position for collision detection
	ball.lastY = ball.y;
};

===================================================================
--- original.js
+++ change.js
@@ -52,9 +52,11 @@
 	self.speed = 2 + LK.getScore() * 0.3;
 	self.direction = 1;
 	self.reactionTime = 0;
 	self.maxReactionTime = 30 - LK.getScore() * 2;
-	if (self.maxReactionTime < 10) self.maxReactionTime = 10;
+	if (self.maxReactionTime < 10) {
+		self.maxReactionTime = 10;
+	}
 	self.update = function () {
 		// Random movement
 		if (Math.random() < 0.02) {
 			self.direction *= -1;
@@ -225,9 +227,11 @@
 	gameState = 'ready';
 	goalkeeper.reactionTime = 0;
 	goalkeeper.speed = 2 + LK.getScore() * 0.3;
 	goalkeeper.maxReactionTime = 30 - LK.getScore() * 2;
-	if (goalkeeper.maxReactionTime < 10) goalkeeper.maxReactionTime = 10;
+	if (goalkeeper.maxReactionTime < 10) {
+		goalkeeper.maxReactionTime = 10;
+	}
 }
 // Game update loop
 game.update = function () {
 	// Check for goal