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

/**** 
* Classes
****/ 
var Ball = Container.expand(function (color) {
	var self = Container.call(this);
	// Safety check to prevent black balls
	if (color === 'black') {
		color = 'red'; // Default to red if black is passed
	}
	self.color = color;
	self.ballColors = ['red', 'blue', 'green', 'yellow', 'pink'];
	self.isSpecial = false;
	self.specialType = null; // 'explosive', 'freeze', 'rapid', 'white_freeze', 'black_destroyer'
	var ballGraphics = self.attachAsset('ball_' + color, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Check for special ball types based on color
	if (color === 'white') {
		self.isSpecial = true;
		self.specialType = 'white_freeze';
		ballGraphics.alpha = 0.9;
	} else if (color === 'fire') {
		self.isSpecial = true;
		self.specialType = 'fire_blast';
		ballGraphics.alpha = 0.9;
		ballGraphics.tint = 0xFF4500;
	} else {
		// 5% chance for special balls on regular colors
		if (Math.random() < 0.05) {
			self.isSpecial = true;
			var specials = ['explosive', 'freeze', 'rapid'];
			self.specialType = specials[Math.floor(Math.random() * specials.length)];
			ballGraphics.alpha = 0.9;
			// Add glow effect for special balls
			if (self.specialType === 'explosive') {
				ballGraphics.tint = 0xFF4500;
			} else if (self.specialType === 'freeze') {
				ballGraphics.tint = 0x00FFFF;
			} else if (self.specialType === 'rapid') {
				ballGraphics.tint = 0xFFFF00;
			}
		}
	}
	self.trackPosition = 0;
	self.trackX = 0;
	self.trackY = 0;
	self.isMoving = false;
	return self;
});
var ChainBall = Ball.expand(function (color) {
	var self = Ball.call(this, color);
	self.chainIndex = 0;
	self.targetX = 0;
	self.targetY = 0;
	self.update = function () {
		if (self.isMoving) {
			// Smooth movement towards target position
			var dx = self.targetX - self.x;
			var dy = self.targetY - self.y;
			self.x += dx * 0.3;
			self.y += dy * 0.3;
			if (Math.abs(dx) < 1 && Math.abs(dy) < 1) {
				self.isMoving = false;
				self.x = self.targetX;
				self.y = self.targetY;
			}
		}
	};
	return self;
});
var Shooter = Container.expand(function () {
	var self = Container.call(this);
	// Simple shooter image asset only
	var shooterGraphics = self.attachAsset('shooter', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.angle = 0;
	self.currentBall = null;
	self.nextBall = null;
	self.rapidFire = false;
	self.rapidFireTimer = 0;
	self.shootCooldown = 0;
	self.loadBall = function () {
		if (self.currentBall) {
			self.currentBall.destroy();
		}
		self.currentBall = self.nextBall;
		if (self.currentBall) {
			self.currentBall.x = 0;
			self.currentBall.y = -20; // Move ball closer to barrel
			self.currentBall.scaleX = 1.25; // 25% larger
			self.currentBall.scaleY = 1.25; // 25% larger
			self.addChild(self.currentBall);
		}
		// Generate next ball
		var colors = ['red', 'blue', 'green', 'yellow', 'pink'];
		var randomColor;
		// Check if it's time for a special ball (every 10 shots)
		if (shotCounter > 0 && shotCounter % 10 === 0) {
			// Randomly choose between white freeze ball or fire blast ball
			if (Math.random() < 0.5) {
				randomColor = 'white'; // White freeze ball
			} else {
				randomColor = 'fire'; // Fire blast ball
			}
		} else {
			randomColor = colors[Math.floor(Math.random() * colors.length)];
		}
		// Safety check to ensure we never create black balls
		if (randomColor === 'black' || !randomColor) {
			randomColor = colors[Math.floor(Math.random() * colors.length)]; // Default to valid colors
		}
		self.nextBall = new Ball(randomColor);
	};
	self.aimAt = function (x, y) {
		var dx = x - self.x;
		var dy = y - self.y;
		self.angle = Math.atan2(dy, dx);
		self.rotation = self.angle;
	};
	self.shoot = function () {
		if (self.shootCooldown > 0 || !self.currentBall) return null;
		var ball = self.currentBall;
		self.removeChild(ball);
		// Reset ball scale to normal size when firing
		ball.scaleX = 1.0;
		ball.scaleY = 1.0;
		// Set ball velocity
		var speed = 8;
		ball.vx = Math.cos(self.angle) * speed;
		ball.vy = Math.sin(self.angle) * speed;
		ball.x = self.x;
		ball.y = self.y;
		// Increment shot counter
		shotCounter++;
		self.loadBall();
		// Create optimized fire effect only if under limit and not in rapid fire
		if (activeFireEffects.length < maxFireEffects && !self.rapidFire) {
			var fireEffect = getFireEffect();
			game.addChild(fireEffect);
			activeFireEffects.push(fireEffect);
			// Position fire effect at the end of the barrel
			var barrelEndX = self.x + Math.cos(self.angle) * 120;
			var barrelEndY = self.y + Math.sin(self.angle) * 120;
			fireEffect.x = barrelEndX;
			fireEffect.y = barrelEndY;
			fireEffect.rotation = self.angle;
			// Animate fire effect - expand and fade out quickly
			tween(fireEffect, {
				scaleX: 1.2,
				scaleY: 1.2,
				alpha: 0
			}, {
				duration: 100,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					returnFireEffect(fireEffect);
				}
			});
		}
		// Set cooldown
		self.shootCooldown = self.rapidFire ? 10 : 20;
		// Play shoot sound immediately
		try {
			LK.getSound('shoot').play();
		} catch (e) {
			console.log('Sound play error:', e);
		}
		return ball;
	};
	self.update = function () {
		if (self.shootCooldown > 0) {
			self.shootCooldown--;
		}
		if (self.rapidFire) {
			self.rapidFireTimer--;
			if (self.rapidFireTimer <= 0) {
				self.rapidFire = false;
				// Remove glow effect
				tween.stop(self, {
					tint: true
				});
				self.tint = 0xFFFFFF;
			} else {
				// Maintain glow effect
				if (self.tint === 0xFFFFFF) {
					tween(self, {
						tint: 0xFFFF88
					}, {
						duration: 200,
						easing: tween.easeInOut
					});
				}
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x0a0a1a
});

/**** 
* Game Code
****/ 
// Fire effect pool management
function _typeof(o) {
	"@babel/helpers - typeof";
	return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
		return typeof o;
	} : function (o) {
		return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
	}, _typeof(o);
}
function getFireEffect() {
	var fireEffect;
	if (fireEffectPool.length > 0) {
		fireEffect = fireEffectPool.pop();
		fireEffect.alpha = 0.9;
		fireEffect.scaleX = 0.8;
		fireEffect.scaleY = 0.8;
		tween.stop(fireEffect); // Stop any ongoing animations
	} else {
		fireEffect = LK.getAsset('fire_effect', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	}
	return fireEffect;
}
function returnFireEffect(fireEffect) {
	if (fireEffect && fireEffect.parent) {
		fireEffect.parent.removeChild(fireEffect);
	}
	var index = activeFireEffects.indexOf(fireEffect);
	if (index > -1) {
		activeFireEffects.splice(index, 1);
	}
	// Reset fire effect properties to prevent animation conflicts
	fireEffect.alpha = 0.9;
	fireEffect.scaleX = 0.8;
	fireEffect.scaleY = 0.8;
	fireEffect.rotation = 0;
	tween.stop(fireEffect); // Stop any ongoing animations
	if (fireEffectPool.length < maxPoolSize) {
		// Limit pool size to prevent memory buildup
		fireEffectPool.push(fireEffect);
	}
}
// Create dynamic space background with shooting stars
function createSpaceBackground() {
	// Create complex starfield with realistic star colors and sizes (no colored squares)
	var starColors = [0xFFFFFF, 0xFFE4B5, 0xFFB347, 0x87CEEB, 0xF0F8FF, 0xFFF8DC];
	var starSizes = [0.5, 0.8, 1.2, 1.8, 2.5, 3.2];
	for (var layer = 0; layer < 5; layer++) {
		var numStars = layer === 0 ? 200 : layer === 1 ? 150 : layer === 2 ? 100 : layer === 3 ? 60 : 30;
		var baseAlpha = layer === 0 ? 0.2 : layer === 1 ? 0.4 : layer === 2 ? 0.6 : layer === 3 ? 0.8 : 1.0;
		for (var i = 0; i < numStars; i++) {
			var starSize = starSizes[Math.floor(Math.random() * starSizes.length)];
			var star = game.addChild(LK.getAsset('track', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: starSize * 0.1,
				scaleY: starSize * 0.1
			}));
			star.x = Math.random() * 2048;
			star.y = Math.random() * 2732;
			star.alpha = baseAlpha + Math.random() * 0.3;
			star.tint = starColors[Math.floor(Math.random() * starColors.length)];
			// Add realistic twinkling based on star size and distance
			if (layer >= 2 && Math.random() < 0.4) {
				var twinkleDelay = Math.random() * 3000;
				LK.setTimeout(function () {
					var _twinkleEffect = function twinkleEffect() {
						if (star && star.parent) {
							tween(star, {
								alpha: star.alpha * 0.2
							}, {
								duration: 1000 + Math.random() * 800,
								easing: tween.easeInOut,
								onFinish: function onFinish() {
									if (star && star.parent) {
										tween(star, {
											alpha: baseAlpha + Math.random() * 0.3
										}, {
											duration: 1000 + Math.random() * 800,
											easing: tween.easeInOut,
											onFinish: _twinkleEffect
										});
									}
								}
							});
						}
					};
					_twinkleEffect();
				}, twinkleDelay);
			}
		}
	}
	// Cosmic dust clouds removed - only keep the game hole
	// Nebula formations removed - only keep the game hole
}
// Initialize space background
createSpaceBackground();
// Create shooting star function
function createShootingStar() {
	var shootingStar = game.addChild(LK.getAsset('track', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.3,
		scaleY: 0.1
	}));
	// Random starting position from top or sides
	var startSide = Math.floor(Math.random() * 3); // 0 = top, 1 = left, 2 = right
	if (startSide === 0) {
		shootingStar.x = Math.random() * 2048;
		shootingStar.y = -50;
	} else if (startSide === 1) {
		shootingStar.x = -50;
		shootingStar.y = Math.random() * 1500;
	} else {
		shootingStar.x = 2098;
		shootingStar.y = Math.random() * 1500;
	}
	// Set shooting star properties
	shootingStar.alpha = 0.8;
	shootingStar.tint = 0xFFFFFF;
	shootingStar.rotation = Math.random() * Math.PI * 2;
	// Create trail effect with multiple small stars
	var trailStars = [];
	for (var i = 0; i < 5; i++) {
		var trailStar = game.addChild(LK.getAsset('track', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 0.1 - i * 0.015,
			scaleY: 0.05 - i * 0.008
		}));
		trailStar.x = shootingStar.x;
		trailStar.y = shootingStar.y;
		trailStar.alpha = 0.6 - i * 0.1;
		trailStar.tint = 0xFFFFFF;
		trailStar.rotation = shootingStar.rotation;
		trailStars.push(trailStar);
	}
	// Calculate movement direction
	var targetX = Math.random() * 2048;
	var targetY = 2732 + 200;
	var deltaX = targetX - shootingStar.x;
	var deltaY = targetY - shootingStar.y;
	var distance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
	var speed = 15 + Math.random() * 10;
	var vx = deltaX / distance * speed;
	var vy = deltaY / distance * speed;
	// Animate shooting star
	var _moveShootingStar = function moveShootingStar() {
		if (shootingStar && shootingStar.parent) {
			shootingStar.x += vx;
			shootingStar.y += vy;
			// Update trail positions
			for (var i = trailStars.length - 1; i > 0; i--) {
				if (trailStars[i] && trailStars[i].parent) {
					trailStars[i].x = trailStars[i - 1].x;
					trailStars[i].y = trailStars[i - 1].y;
				}
			}
			if (trailStars[0] && trailStars[0].parent) {
				trailStars[0].x = shootingStar.x;
				trailStars[0].y = shootingStar.y;
			}
			// Check if off screen
			if (shootingStar.x < -100 || shootingStar.x > 2148 || shootingStar.y > 2832) {
				shootingStar.destroy();
				for (var i = 0; i < trailStars.length; i++) {
					if (trailStars[i] && trailStars[i].parent) {
						trailStars[i].destroy();
					}
				}
				return;
			}
			LK.setTimeout(_moveShootingStar, 16);
		}
	};
	_moveShootingStar();
}
// Start shooting star timer (every 10 seconds)
var shootingStarTimer = LK.setInterval(createShootingStar, 10000);
// Game variables
var chain = [];
var flyingBalls = [];
var shooter;
var trackPoints = [];
var chainSpeed = 0.004; // Increased initial chain speed for faster start
var normalChainSpeed = 0.004; // Store normal speed - increased from 0.0003
var fastChainSpeed = 0.002; // Fast chain speed - slower than before
var veryFastChainSpeed = 0.006; // Very fast chain speed - slower than before
var speedLevel = 0; // 0 = normal, 1 = fast, 2 = very fast
var chainFrozen = false;
var freezeTimer = 0;
var freezeCountdownDisplay = null;
var level = 1;
var gameWon = false;
var gameLost = false;
// Score multiplier system
var scoreMultipliers = [1.0, 1.5, 2.0]; // normal, fast, very fast
var pointsDisplays = []; // Array to track active point displays
var shotCounter = 0; // Counter to track shots fired
// Fire effect optimization
var fireEffectPool = []; // Pool of reusable fire effects
var activeFireEffects = []; // Currently active fire effects
var maxFireEffects = 2; // Reduced maximum concurrent fire effects
var maxPoolSize = 3; // Limit pool size to prevent memory buildup
// Create vortex track path
function createTrackPath() {
	trackPoints = [];
	var centerX = 1024;
	var centerY = 1366;
	var holeX = 1024;
	var holeY = 1200; // Hole position - closer to shooter
	var segments = 1500; // Longer track for better gameplay
	var targetSpacing = 7.0; // Target distance between consecutive points
	var currentDistance = 0;
	// Generate initial spiral path points (more densely packed)
	var tempPoints = [];
	var densityMultiplier = 3; // Create 3x more points initially for smoother curves
	for (var i = 0; i < segments * densityMultiplier; i++) {
		var progress = i / (segments * densityMultiplier);
		// Single spiral angle - creates one continuous swirl towards center
		var spiralAngle = progress * Math.PI * 6; // 3 full rotations for longer swirling path
		// Radius decreases linearly for smooth inward movement
		var baseRadius = 1000 * (1 - progress); // Linear decrease for steady approach to center
		// Add gentle wave motion for swirling effect
		var waveMotion = Math.sin(progress * Math.PI * 12) * (60 * (1 - progress)); // Gentle swirling motion
		var currentRadius = baseRadius + waveMotion;
		// Ensure minimum radius for playability at center
		currentRadius = Math.max(currentRadius, 40);
		// Calculate position on spiral path - interpolate towards hole position
		var spiralX = centerX + Math.cos(spiralAngle) * currentRadius;
		var spiralY = centerY + Math.sin(spiralAngle) * currentRadius;
		// Gradually move towards hole position in final segment
		var holeProgress = Math.max(0, (progress - 0.9) / 0.1); // Last 10% of track moves to hole
		var x = spiralX + (holeX - spiralX) * holeProgress;
		var y = spiralY + (holeY - spiralY) * holeProgress;
		// Ensure the path stays within screen bounds with padding
		x = Math.max(150, Math.min(1898, x));
		y = Math.max(300, Math.min(2600, y));
		tempPoints.push({
			x: x,
			y: y
		});
	}
	// Now resample the path to ensure equal spacing
	trackPoints.push(tempPoints[0]); // Add first point
	currentDistance = 0;
	for (var i = 1; i < tempPoints.length; i++) {
		var prevPoint = tempPoints[i - 1];
		var currPoint = tempPoints[i];
		var segmentLength = Math.sqrt(Math.pow(currPoint.x - prevPoint.x, 2) + Math.pow(currPoint.y - prevPoint.y, 2));
		currentDistance += segmentLength;
		// Add point when we've traveled the target spacing distance
		if (currentDistance >= targetSpacing) {
			// Interpolate to get exact position at target spacing
			var excess = currentDistance - targetSpacing;
			var ratio = excess / segmentLength;
			var adjustedX = currPoint.x - (currPoint.x - prevPoint.x) * ratio;
			var adjustedY = currPoint.y - (currPoint.y - prevPoint.y) * ratio;
			trackPoints.push({
				x: adjustedX,
				y: adjustedY
			});
			currentDistance = excess; // Carry over the excess distance
		}
	}
	// Create visual track markers with vortex effect
	for (var i = 0; i < trackPoints.length; i += 6) {
		var trackMarker = game.addChild(LK.getAsset('track', {
			anchorX: 0.5,
			anchorY: 0.5
		}));
		trackMarker.x = trackPoints[i].x;
		trackMarker.y = trackPoints[i].y;
		trackMarker.alpha = 0.3 + i / trackPoints.length * 0.3; // Fade in towards center
		// Scale markers smaller as they approach center for vortex effect
		var scaleProgress = i / trackPoints.length;
		trackMarker.scaleX = 0.5 + (1 - scaleProgress) * 0.5;
		trackMarker.scaleY = 0.5 + (1 - scaleProgress) * 0.5;
	}
}
// Create hole at end of track
var hole = game.addChild(LK.getAsset('hole', {
	anchorX: 0.5,
	anchorY: 0.5
}));
// Create shooter
shooter = game.addChild(new Shooter());
shooter.x = 1024; // Center of screen horizontally (2048/2 = 1024)
shooter.y = 1366; // Position near the center hole
// Initialize first balls
shooter.loadBall();
shooter.loadBall();
// Helper function to get safe color that won't create 3+ consecutive
function getSafeColor(colors, lastColors) {
	var availableColors = [];
	// Find colors that won't create 3 consecutive
	for (var c = 0; c < colors.length; c++) {
		var testColor = colors[c];
		var wouldCreate3 = false;
		// Check if this color would create 3 consecutive
		if (lastColors.length >= 2 && lastColors[lastColors.length - 1] === testColor && lastColors[lastColors.length - 2] === testColor) {
			wouldCreate3 = true;
		}
		if (!wouldCreate3) {
			availableColors.push(testColor);
		}
	}
	// If all colors would create 3 consecutive (shouldn't happen), return any color except the last one
	if (availableColors.length === 0) {
		for (var c = 0; c < colors.length; c++) {
			if (lastColors.length === 0 || colors[c] !== lastColors[lastColors.length - 1]) {
				availableColors.push(colors[c]);
			}
		}
	}
	// Return random color from available safe colors
	return availableColors[Math.floor(Math.random() * availableColors.length)];
}
// Create initial chain
function createChain() {
	chain = [];
	var chainLength = 15 + level * 5;
	var colors = ['red', 'blue', 'green', 'yellow', 'pink'];
	var ballSpacing = 60; // Space between balls - balls touch each other (increased for bigger balls)
	var trackSpacing = 6.0; // Increased track position spacing to prevent overlap
	var lastColors = []; // Track last few colors to prevent 3+ consecutive
	// Ensure better color distribution by cycling through colors
	for (var i = 0; i < chainLength; i++) {
		var color;
		// Use safe color selection to prevent 3+ consecutive
		if (i < 2) {
			// For first two balls, use any color
			if (i % 8 < 5) {
				// First 5 of every 8 balls use sequential colors
				var colorIndex = i % colors.length;
				color = colors[colorIndex];
			} else {
				// Last 3 of every 8 balls use random colors
				var colorIndex = Math.floor(Math.random() * colors.length);
				color = colors[colorIndex];
			}
		} else {
			// For subsequent balls, ensure no 3+ consecutive
			color = getSafeColor(colors, lastColors);
		}
		// Safety check to ensure we never create black balls
		if (color === 'black' || !color) {
			color = colors[i % colors.length]; // Default to cycling through valid colors
		}
		var ball = game.addChild(new ChainBall(color));
		ball.chainIndex = i;
		// Initialize track position with consistent spacing for vortex
		ball.trackPosition = i * 7.0; // Use consistent spacing to prevent overlap
		// Position ball immediately on track
		positionBallOnTrack(ball, ball.trackPosition);
		chain.push(ball);
		// Update lastColors array (keep only last 2 colors for checking)
		lastColors.push(color);
		if (lastColors.length > 2) {
			lastColors.shift(); // Remove oldest color, keep only last 2
		}
	}
}
// Position ball on track
function positionBallOnTrack(ball, trackPosition) {
	if (trackPosition >= trackPoints.length || trackPoints.length === 0) {
		if (trackPoints.length > 0) {
			ball.x = trackPoints[trackPoints.length - 1].x;
			ball.y = trackPoints[trackPoints.length - 1].y;
		} else {
			ball.x = 1024;
			ball.y = 1366;
		}
		return;
	}
	var pointIndex = Math.floor(Math.max(0, trackPosition));
	var nextIndex = Math.min(pointIndex + 1, trackPoints.length - 1);
	var t = trackPosition - pointIndex;
	var point1 = trackPoints[pointIndex];
	var point2 = trackPoints[nextIndex];
	// Add safety check for undefined points
	if (!point1 || !point2) {
		ball.x = 1024;
		ball.y = 1366;
		ball.isMoving = false;
		return;
	}
	// Calculate position with anti-overlap adjustment near the hole
	var baseX = point1.x + (point2.x - point1.x) * t;
	var baseY = point1.y + (point2.y - point1.y) * t;
	// Apply spacing adjustment to prevent overlap near hole
	var progressToHole = trackPosition / trackPoints.length;
	if (progressToHole > 0.8) {
		// Near the hole (last 20% of track)
		// Add slight offset based on ball's chain position to prevent stacking
		var offsetAngle = ball.chainIndex * 0.3; // Small angular offset per ball
		var offsetRadius = 15 * (progressToHole - 0.8) * 5; // Increase offset near hole
		baseX += Math.cos(offsetAngle) * offsetRadius;
		baseY += Math.sin(offsetAngle) * offsetRadius;
	}
	ball.targetX = baseX;
	ball.targetY = baseY;
	ball.isMoving = true;
}
// Update chain positions
function updateChain() {
	if (chainFrozen) {
		freezeTimer--;
		// Update freeze countdown display
		if (freezeCountdownDisplay) {
			var secondsLeft = Math.ceil(freezeTimer / 60);
			freezeCountdownDisplay.setText('FROZEN: ' + secondsLeft);
			// Add pulsing effect each second
			if (freezeTimer % 60 === 0) {
				tween(freezeCountdownDisplay, {
					scaleX: 1.3,
					scaleY: 1.3
				}, {
					duration: 200,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						if (freezeCountdownDisplay) {
							tween(freezeCountdownDisplay, {
								scaleX: 1.0,
								scaleY: 1.0
							}, {
								duration: 200,
								easing: tween.easeIn
							});
						}
					}
				});
			}
		}
		if (freezeTimer <= 0) {
			chainFrozen = false;
			// Remove countdown display
			if (freezeCountdownDisplay) {
				freezeCountdownDisplay.destroy();
				freezeCountdownDisplay = null;
			}
			// Remove ice tint from all chain balls
			for (var i = 0; i < chain.length; i++) {
				var chainBall = chain[i];
				tween(chainBall, {
					tint: 0xFFFFFF
				}, {
					duration: 300
				});
			}
		}
		return;
	}
	// Detect gaps in the chain by checking distances between consecutive balls
	var hasGap = false;
	var gapStartIndex = -1;
	var gapEndIndex = -1;
	var trackSpacing = 7.0; // Standard spacing between balls
	var maxAllowedGap = trackSpacing * 2; // Gap threshold
	for (var i = 0; i < chain.length - 1; i++) {
		var currentBall = chain[i];
		var nextBall = chain[i + 1];
		var gapDistance = nextBall.trackPosition - currentBall.trackPosition;
		if (gapDistance > maxAllowedGap) {
			hasGap = true;
			gapStartIndex = i;
			gapEndIndex = i + 1;
			break;
		}
	}
	if (hasGap) {
		// Gap detected - back part waits completely, front part moves forward to close gap
		for (var i = 0; i < chain.length; i++) {
			var ball = chain[i];
			if (i <= gapStartIndex) {
				// Front part (before gap) - move forward normally to close gap
				ball.trackPosition += chainSpeed;
				// Check if reached hole (vortex center)
				if (ball.trackPosition >= trackPoints.length - 1) {
					gameLost = true;
					LK.getSound('gameover').play();
					LK.showGameOver();
					return;
				}
			} else {
				// Back part (after gap) - wait completely, don't move at all
				// Don't move the back part at all
			}
		}
	} else {
		// No gap - move all balls forward normally together
		for (var i = 0; i < chain.length; i++) {
			var ball = chain[i];
			// Move chain forward in vortex pattern
			ball.trackPosition += chainSpeed;
			// Check if reached hole (vortex center)
			if (ball.trackPosition >= trackPoints.length - 1) {
				gameLost = true;
				LK.getSound('gameover').play();
				LK.showGameOver();
				return;
			}
		}
	}
	// Maintain equal spacing between balls for vortex movement with collision avoidance
	for (var i = 0; i < chain.length; i++) {
		var ball = chain[i];
		// Ensure proper spacing from previous ball
		if (i > 0) {
			var previousBall = chain[i - 1];
			var expectedPosition = previousBall.trackPosition + trackSpacing;
			// Only enforce forward spacing when gap is closing or normal movement
			var currentGap = ball.trackPosition - previousBall.trackPosition;
			if (currentGap < trackSpacing * 0.8) {
				// Gap is almost closed, enforce proper spacing
				ball.trackPosition = Math.max(ball.trackPosition, expectedPosition);
			} else if (currentGap > maxAllowedGap) {
				// Large gap detected, allow back part to move forward freely
				// Don't enforce spacing yet
			} else {
				// Normal spacing enforcement
				ball.trackPosition = Math.max(ball.trackPosition, expectedPosition);
			}
		}
		positionBallOnTrack(ball, ball.trackPosition);
	}
	// Additional collision avoidance pass to prevent balls from overlapping
	for (var i = 0; i < chain.length; i++) {
		var ball = chain[i];
		for (var j = i + 1; j < chain.length; j++) {
			var otherBall = chain[j];
			var dx = ball.x - otherBall.x;
			var dy = ball.y - otherBall.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			var minDistance = 60; // Minimum distance between ball centers (increased for 20% larger balls)
			if (distance < minDistance && distance > 0) {
				// Calculate separation needed
				var separation = minDistance - distance;
				var separationX = dx / distance * separation * 0.5;
				var separationY = dy / distance * separation * 0.5;
				// Move balls apart by adjusting their track positions
				var trackDelta = separation / trackSpacing;
				if (i > 0) {
					// Move current ball back
					ball.trackPosition -= trackDelta * 0.5;
					// Reposition on track
					positionBallOnTrack(ball, ball.trackPosition);
				}
				if (j < chain.length - 1) {
					// Move other ball forward
					otherBall.trackPosition += trackDelta * 0.5;
					// Reposition on track
					positionBallOnTrack(otherBall, otherBall.trackPosition);
				}
			}
		}
	}
}
// Check for matches
function checkMatches() {
	var matches = [];
	var currentColor = null;
	var currentMatch = [];
	// First, ensure all balls are positioned correctly on the track
	for (var i = 0; i < chain.length; i++) {
		var ball = chain[i];
		positionBallOnTrack(ball, ball.trackPosition);
	}
	// Check for consecutive balls of the same color
	for (var i = 0; i < chain.length; i++) {
		var ball = chain[i];
		if (ball.color === currentColor) {
			currentMatch.push(ball);
		} else {
			if (currentMatch.length >= 3) {
				matches.push(currentMatch.slice());
			}
			currentColor = ball.color;
			currentMatch = [ball];
		}
	}
	// Check last group
	if (currentMatch.length >= 3) {
		matches.push(currentMatch.slice());
	}
	// Remove matches
	for (var m = 0; m < matches.length; m++) {
		var match = matches[m];
		var baseScore = match.length * 10;
		var multiplier = scoreMultipliers[speedLevel];
		var score = Math.floor(baseScore * multiplier);
		// Calculate display position (center of the match)
		var displayX = 0;
		var displayY = 0;
		for (var b = 0; b < match.length; b++) {
			displayX += match[b].x;
			displayY += match[b].y;
		}
		displayX /= match.length;
		displayY /= match.length;
		// Display flashing points
		displayPoints(score, displayX, displayY);
		// Check for special balls
		for (var b = 0; b < match.length; b++) {
			var ball = match[b];
			if (ball.isSpecial) {
				handleSpecialBall(ball);
			}
		}
		// Store the first index of the match to know where the gap starts
		var firstMatchIndex = chain.indexOf(match[0]);
		var trackSpacing = 7.0; // Increased spacing to prevent overlap
		var gapSize = match.length * trackSpacing; // Calculate gap size based on track spacing
		// Remove matched balls
		for (var b = 0; b < match.length; b++) {
			var ball = match[b];
			var index = chain.indexOf(ball);
			if (index > -1) {
				chain.splice(index, 1);
				ball.destroy();
			}
		}
		// Close the gap by moving all balls after the removed section forward
		for (var i = firstMatchIndex; i < chain.length; i++) {
			var ball = chain[i];
			// Move the ball's track position forward to close the gap
			ball.trackPosition -= gapSize;
		}
		// Re-space all balls to maintain equal intervals after gap closing
		for (var i = 1; i < chain.length; i++) {
			var previousBall = chain[i - 1];
			var currentBall = chain[i];
			var expectedPosition = previousBall.trackPosition + trackSpacing;
			// Enforce minimum spacing to prevent overlap
			currentBall.trackPosition = Math.max(currentBall.trackPosition, expectedPosition);
			// Position the ball immediately to detect matches faster
			positionBallOnTrack(currentBall, currentBall.trackPosition);
			// Animate the ball to its new position smoothly
			tween(currentBall, {
				x: currentBall.targetX,
				y: currentBall.targetY
			}, {
				duration: 200,
				// Faster animation for quicker match detection
				easing: tween.easeOut
			});
		}
		LK.setScore(LK.getScore() + score);
		LK.getSound('match').play();
		// Pull chain back slightly when balls are removed
		chainSpeed = Math.max(0.5, chainSpeed - 0.1);
	}
	// Always check for new matches after gap closure, regardless of previous matches
	// This ensures balls disappear when they touch each other after gap closure
	if (matches.length > 0) {
		// After removing matches and closing gaps, check for new matches that may have formed
		// Use a timeout to allow animations to settle before checking
		LK.setTimeout(function () {
			checkMatches();
		}, 50); // Reduced timeout for faster response
	}
	// Always perform an additional check for consecutive same-color balls after any gap closure
	// This ensures that balls of the same color that become adjacent are immediately detected
	var foundConsecutiveColors = false;
	for (var i = 0; i < chain.length - 1; i++) {
		var currentBall = chain[i];
		var nextBall = chain[i + 1];
		if (currentBall.color === nextBall.color) {
			// Found consecutive same-color balls, check for a group of 3 or more
			var consecutiveCount = 1;
			var groupStart = i;
			// Count consecutive balls of the same color starting from current position
			for (var j = i + 1; j < chain.length && chain[j].color === currentBall.color; j++) {
				consecutiveCount++;
			}
			// If we have 3 or more consecutive balls of the same color, mark for immediate removal
			if (consecutiveCount >= 3) {
				foundConsecutiveColors = true;
				break;
			}
		}
	}
	// If consecutive same-color balls were found, immediately check matches again
	if (foundConsecutiveColors) {
		LK.setTimeout(function () {
			checkMatches();
		}, 10); // Very short timeout for immediate response
	}
	// Check win condition
	if (chain.length === 0) {
		gameWon = true;
		level++;
		LK.showYouWin();
	}
}
// Display flashing points
function displayPoints(points, x, y) {
	var pointsText = new Text2('+' + points, {
		size: 80,
		fill: 0xFFFF00
	});
	pointsText.anchor.set(0.5, 0.5);
	pointsText.x = x;
	pointsText.y = y;
	pointsText.alpha = 1.0;
	pointsText.scaleX = 0.5;
	pointsText.scaleY = 0.5;
	game.addChild(pointsText);
	pointsDisplays.push(pointsText);
	// Animate the points display
	tween(pointsText, {
		scaleX: 1.2,
		scaleY: 1.2,
		y: y - 100
	}, {
		duration: 800,
		easing: tween.easeOut,
		onFinish: function onFinish() {
			tween(pointsText, {
				alpha: 0,
				scaleX: 0.8,
				scaleY: 0.8
			}, {
				duration: 400,
				easing: tween.easeIn,
				onFinish: function onFinish() {
					pointsText.destroy();
					var index = pointsDisplays.indexOf(pointsText);
					if (index > -1) {
						pointsDisplays.splice(index, 1);
					}
				}
			});
		}
	});
}
// Handle special ball effects
function handleSpecialBall(ball) {
	if (ball.specialType === 'explosive') {
		var _shakeEffect = function shakeEffect() {
			if (shakeTimer < shakeDuration) {
				game.x = originalX + (Math.random() - 0.5) * shakeIntensity;
				game.y = originalY + (Math.random() - 0.5) * shakeIntensity;
				shakeTimer += 16;
				LK.setTimeout(_shakeEffect, 16);
			} else {
				game.x = originalX;
				game.y = originalY;
			}
		};
		// Remove nearby balls
		var explosionRadius = 3;
		var ballIndex = chain.indexOf(ball);
		var toRemove = [];
		for (var i = Math.max(0, ballIndex - explosionRadius); i < Math.min(chain.length, ballIndex + explosionRadius + 1); i++) {
			if (chain[i] !== ball) {
				toRemove.push(chain[i]);
			}
		}
		for (var i = 0; i < toRemove.length; i++) {
			var index = chain.indexOf(toRemove[i]);
			if (index > -1) {
				chain.splice(index, 1);
				toRemove[i].destroy();
			}
		}
		LK.effects.flashScreen(0xff8000, 300);
		// Add screen shake effect
		var originalX = game.x;
		var originalY = game.y;
		var shakeIntensity = 10;
		var shakeDuration = 300;
		var shakeTimer = 0;
		_shakeEffect();
	} else if (ball.specialType === 'freeze') {
		chainFrozen = true;
		freezeTimer = 180; // 3 seconds at 60fps
		LK.effects.flashScreen(0x00ffff, 500);
		// Add ice tint to all chain balls
		for (var i = 0; i < chain.length; i++) {
			var chainBall = chain[i];
			tween(chainBall, {
				tint: 0x88DDFF
			}, {
				duration: 300
			});
		}
	} else if (ball.specialType === 'rapid') {
		shooter.rapidFire = true;
		shooter.rapidFireTimer = 300; // 5 seconds at 60fps
		LK.effects.flashScreen(0xffff00, 200);
	} else if (ball.specialType === 'white_freeze') {
		chainFrozen = true;
		freezeTimer = 120; // 2 seconds at 60fps
		LK.effects.flashScreen(0xffffff, 500);
		// Create freeze countdown display
		if (freezeCountdownDisplay) {
			freezeCountdownDisplay.destroy();
		}
		freezeCountdownDisplay = new Text2('FROZEN: 2', {
			size: 150,
			fill: 0x00FFFF
		});
		freezeCountdownDisplay.anchor.set(0.5, 0.5);
		LK.gui.center.addChild(freezeCountdownDisplay);
		// Add pulsing animation to the countdown display
		tween(freezeCountdownDisplay, {
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 300,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				tween(freezeCountdownDisplay, {
					scaleX: 1.0,
					scaleY: 1.0
				}, {
					duration: 300,
					easing: tween.easeInOut
				});
			}
		});
		// Add ice tint to all chain balls
		for (var i = 0; i < chain.length; i++) {
			var chainBall = chain[i];
			tween(chainBall, {
				tint: 0x88DDFF
			}, {
				duration: 300
			});
		}
	} else if (ball.specialType === 'fire_blast') {
		// Fire blast effect - explode 3 balls on each side
		var ballIndex = chain.indexOf(ball);
		var blastRadius = 3;
		var toRemove = [];
		// Get 3 balls to the left and 3 balls to the right
		for (var i = Math.max(0, ballIndex - blastRadius); i < Math.min(chain.length, ballIndex + blastRadius + 1); i++) {
			if (chain[i] !== ball) {
				toRemove.push(chain[i]);
			}
		}
		// Store the first index of the blast to know where the gap starts
		var firstBlastIndex = Math.max(0, ballIndex - blastRadius);
		var trackSpacing = 7.0; // Track spacing to prevent overlap
		var gapSize = toRemove.length * trackSpacing; // Calculate gap size based on track spacing
		// Remove blasted balls
		for (var i = 0; i < toRemove.length; i++) {
			var index = chain.indexOf(toRemove[i]);
			if (index > -1) {
				chain.splice(index, 1);
				toRemove[i].destroy();
			}
		}
		// Close the gap by moving all balls after the removed section forward
		for (var i = firstBlastIndex; i < chain.length; i++) {
			var ball = chain[i];
			// Add comprehensive safety check for ball existence and trackPosition
			if (ball && _typeof(ball) === 'object' && ball.trackPosition !== undefined) {
				// Move the ball's track position forward to close the gap
				ball.trackPosition -= gapSize;
			} else if (ball && _typeof(ball) === 'object' && ball.trackPosition === undefined) {
				// Initialize trackPosition if undefined
				ball.trackPosition = i * 7.0; // Use index-based positioning
				ball.trackPosition -= gapSize;
			} else if (!ball || _typeof(ball) !== 'object') {
				// Skip invalid ball entries
				continue;
			}
		}
		// Comprehensive re-spacing to ensure no gaps remain
		// Start from the beginning and ensure each ball has proper spacing
		for (var i = 0; i < chain.length; i++) {
			var ball = chain[i];
			if (i === 0) {
				// First ball keeps its current position as reference
				continue;
			}
			var previousBall = chain[i - 1];
			var expectedPosition = previousBall.trackPosition + trackSpacing;
			// Always enforce proper spacing, moving balls forward to close any gaps
			ball.trackPosition = expectedPosition;
			// Position the ball immediately to detect matches faster
			positionBallOnTrack(ball, ball.trackPosition);
			// Animate the ball to its new position smoothly
			tween(ball, {
				x: ball.targetX,
				y: ball.targetY
			}, {
				duration: 200,
				// Faster animation for quicker match detection
				easing: tween.easeOut
			});
		}
		// Immediately check for any consecutive same-color balls after repositioning
		var foundImmediateMatch = false;
		for (var i = 0; i < chain.length - 2; i++) {
			if (chain[i].color === chain[i + 1].color && chain[i + 1].color === chain[i + 2].color) {
				foundImmediateMatch = true;
				break;
			}
		}
		if (foundImmediateMatch) {
			// Trigger immediate match check
			LK.setTimeout(function () {
				checkMatches();
			}, 5); // Very fast response for fire blast
		}
		// Create blast explosion effect
		LK.effects.flashScreen(0xFF4500, 500);
		// Add screen shake effect
		var originalX = game.x;
		var originalY = game.y;
		var shakeIntensity = 15;
		var shakeDuration = 400;
		var shakeTimer = 0;
		var _shakeEffect = function shakeEffect() {
			if (shakeTimer < shakeDuration) {
				game.x = originalX + (Math.random() - 0.5) * shakeIntensity;
				game.y = originalY + (Math.random() - 0.5) * shakeIntensity;
				shakeTimer += 16;
				LK.setTimeout(_shakeEffect, 16);
			} else {
				game.x = originalX;
				game.y = originalY;
			}
		};
		_shakeEffect();
		// Create blast text effect with swinging animation
		var blastText = new Text2('BLAST!', {
			size: 120,
			fill: 0xFF4500
		});
		blastText.anchor.set(0.5, 0.5);
		blastText.x = ball.x;
		blastText.y = ball.y;
		blastText.scaleX = 0.5;
		blastText.scaleY = 0.5;
		blastText.rotation = -0.3; // Start with slight rotation
		game.addChild(blastText);
		// Animate blast text with swinging motion
		tween(blastText, {
			scaleX: 2.0,
			scaleY: 2.0,
			alpha: 0.8,
			rotation: 0.3 // Swing to the other side
		}, {
			duration: 300,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				tween(blastText, {
					alpha: 0,
					scaleX: 1.5,
					scaleY: 1.5,
					rotation: -0.2 // Swing back slightly
				}, {
					duration: 400,
					easing: tween.easeIn,
					onFinish: function onFinish() {
						blastText.destroy();
					}
				});
			}
		});
		// Check for new matches after gap closure
		LK.setTimeout(function () {
			checkMatches();
		}, 250); // Allow time for animations to settle
	}
	LK.getSound('powerup').play();
}
// Insert ball into chain
function insertBallIntoChain(ball, insertIndex) {
	var chainBall = new ChainBall(ball.color);
	chainBall.isSpecial = ball.isSpecial;
	chainBall.specialType = ball.specialType;
	chainBall.x = ball.x;
	chainBall.y = ball.y;
	chainBall.scaleX = 0.1;
	chainBall.scaleY = 0.1;
	game.addChild(chainBall);
	// Animate ball insertion
	tween(chainBall, {
		scaleX: 1,
		scaleY: 1
	}, {
		duration: 200,
		easing: tween.easeOut
	});
	chain.splice(insertIndex, 0, chainBall);
	// Update chain indices
	for (var i = 0; i < chain.length; i++) {
		chain[i].chainIndex = i;
	}
	checkMatches();
}
// Initialize game
createTrackPath();
createChain();
// Start gameplay music
LK.playMusic('Gameplay');
// Position hole at the end of the track - near the shooter
hole.x = 1024;
hole.y = 1200; // Position hole closer to shooter
// Add breathing and rotation effects to the hole
var _holeBreathingEffect = function holeBreathingEffect() {
	if (hole && hole.parent) {
		// Breathing effect - scale up and down
		tween(hole, {
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 1500,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				if (hole && hole.parent) {
					tween(hole, {
						scaleX: 1.0,
						scaleY: 1.0
					}, {
						duration: 1500,
						easing: tween.easeInOut,
						onFinish: _holeBreathingEffect
					});
				}
			}
		});
	}
};
// Start breathing effect
_holeBreathingEffect();
// Continuous rotation effect
var _holeRotationEffect = function holeRotationEffect() {
	if (hole && hole.parent) {
		hole.rotation += 0.02; // Rotate around its own axis
		LK.setTimeout(_holeRotationEffect, 16); // 60fps rotation
	}
};
// Start rotation effect
_holeRotationEffect();
// Score display
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Level display
var levelTxt = new Text2('Level: 1', {
	size: 50,
	fill: 0xFFFFFF
});
levelTxt.anchor.set(0, 0);
levelTxt.x = 120;
levelTxt.y = 20;
LK.gui.top.addChild(levelTxt);
// Next ball preview
var nextBallTxt = new Text2('Next:', {
	size: 40,
	fill: 0xFFFFFF
});
nextBallTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(nextBallTxt);
// Create accelerate button
var accelerateBtn = new Text2('NORMAL', {
	size: 50,
	fill: 0xFFFFFF
});
accelerateBtn.anchor.set(1, 1);
accelerateBtn.x = -20;
accelerateBtn.y = -20;
LK.gui.bottomRight.addChild(accelerateBtn);
// Button press handler
accelerateBtn.down = function (x, y, obj) {
	speedLevel = (speedLevel + 1) % 3; // Cycle through 0, 1, 2
	if (speedLevel === 0) {
		accelerateBtn.setText('NORMAL');
		accelerateBtn.fill = 0xFFFFFF;
	} else if (speedLevel === 1) {
		accelerateBtn.setText('FAST');
		accelerateBtn.fill = 0xFFFF00;
	} else {
		accelerateBtn.setText('VERY FAST');
		accelerateBtn.fill = 0xFF4444;
	}
};
// Game input
game.down = function (x, y, obj) {
	shooter.aimAt(x, y);
	var ball = shooter.shoot();
	if (ball) {
		flyingBalls.push(ball);
		game.addChild(ball);
	}
};
// Mouse move handler to make shooter follow mouse
game.move = function (x, y, obj) {
	shooter.aimAt(x, y);
};
// Main game loop
game.update = function () {
	if (gameWon || gameLost) {
		// Clean up fire effects when game ends
		for (var i = 0; i < activeFireEffects.length; i++) {
			if (activeFireEffects[i] && activeFireEffects[i].parent) {
				tween.stop(activeFireEffects[i]); // Stop animations
				activeFireEffects[i].parent.removeChild(activeFireEffects[i]);
			}
		}
		activeFireEffects = [];
		// Clean up flying balls
		for (var i = 0; i < flyingBalls.length; i++) {
			flyingBalls[i].destroy();
		}
		flyingBalls = [];
		return;
	}
	// Update chain
	updateChain();
	// Update flying balls - limit processing if too many
	var maxFlyingBalls = 5; // Prevent too many balls in flight
	if (flyingBalls.length > maxFlyingBalls) {
		// Remove oldest balls if too many in flight
		var oldestBall = flyingBalls.shift();
		oldestBall.destroy();
	}
	for (var i = flyingBalls.length - 1; i >= 0; i--) {
		var ball = flyingBalls[i];
		ball.x += ball.vx;
		ball.y += ball.vy;
		// Check collision with chain - optimized detection
		var inserted = false;
		var collisionIndex = -1;
		var ballRadius = 30; // Approximate ball radius (increased for 20% larger balls)
		// Only check balls within reasonable distance
		for (var j = 0; j < chain.length; j++) {
			var chainBall = chain[j];
			// Quick distance check before expensive intersects call
			var dx = ball.x - chainBall.x;
			var dy = ball.y - chainBall.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < ballRadius * 2 && ball.intersects(chainBall)) {
				collisionIndex = j;
				break;
			}
		}
		// If collision detected, handle special balls or insert into chain
		if (collisionIndex !== -1) {
			// Check if the flying ball is a white ball - trigger freeze effect and disappear
			if (ball.color === 'white' && ball.isSpecial && ball.specialType === 'white_freeze') {
				handleSpecialBall(ball);
				ball.destroy();
				flyingBalls.splice(i, 1);
				inserted = true;
			} else if (ball.color === 'fire' && ball.isSpecial && ball.specialType === 'fire_blast') {
				// Fire ball - trigger blast effect on the first ball it hits
				var hitBall = chain[collisionIndex];
				// Temporarily set the hit ball as the fire ball for the blast effect
				hitBall.isSpecial = true;
				hitBall.specialType = 'fire_blast';
				handleSpecialBall(hitBall);
				ball.destroy();
				flyingBalls.splice(i, 1);
				inserted = true;
			} else {
				// Regular ball - insert into chain with collision avoidance
				var insertIndex = collisionIndex + 1;
				var trackSpacing = 7.0; // Increased spacing to prevent overlap
				// Create more space by pushing balls further back
				var pushBackDistance = trackSpacing * 1.5; // Extra space to prevent overlap
				// Adjust track positions for all balls after insertion point
				for (var k = insertIndex; k < chain.length; k++) {
					chain[k].trackPosition += pushBackDistance; // Move balls back to make space
				}
				insertBallIntoChain(ball, insertIndex);
				// Set the inserted ball's track position with proper spacing
				if (insertIndex < chain.length) {
					chain[insertIndex].trackPosition = chain[collisionIndex].trackPosition + trackSpacing;
					positionBallOnTrack(chain[insertIndex], chain[insertIndex].trackPosition);
				}
				// Re-space all balls after insertion to maintain equal intervals with extra spacing
				for (var k = insertIndex + 1; k < chain.length; k++) {
					var expectedPosition = chain[k - 1].trackPosition + trackSpacing;
					// Enforce minimum spacing to prevent overlap with buffer
					chain[k].trackPosition = Math.max(chain[k].trackPosition, expectedPosition + 1.0);
				}
				// Additional pass to ensure no overlapping after insertion
				for (var k = 0; k < chain.length - 1; k++) {
					var currentBall = chain[k];
					var nextBall = chain[k + 1];
					var dx = currentBall.x - nextBall.x;
					var dy = currentBall.y - nextBall.y;
					var distance = Math.sqrt(dx * dx + dy * dy);
					if (distance < 60) {
						// Push next ball further back
						nextBall.trackPosition += (60 - distance) / trackSpacing;
						positionBallOnTrack(nextBall, nextBall.trackPosition);
					}
				}
				ball.destroy();
				flyingBalls.splice(i, 1);
				inserted = true;
			}
		}
		// Remove if off screen
		if (!inserted && (ball.x < -100 || ball.x > 2148 || ball.y < -100 || ball.y > 2832)) {
			ball.destroy();
			flyingBalls.splice(i, 1);
		}
	}
	// Update shooter
	shooter.update();
	// Update UI
	scoreTxt.setText('Score: ' + LK.getScore());
	levelTxt.setText('Level: ' + level);
	// Show next ball preview with consistent size
	if (shooter.nextBall) {
		if (shooter.nextBall.parent) {
			shooter.nextBall.parent.removeChild(shooter.nextBall);
		}
		shooter.nextBall.x = -50;
		shooter.nextBall.y = 60;
		shooter.nextBall.scaleX = 0.8;
		shooter.nextBall.scaleY = 0.8;
		LK.gui.topRight.addChild(shooter.nextBall);
	}
	// Increase chain speed over time (slower increase)
	normalChainSpeed += 0.00003;
	// Update other speeds to maintain ratios
	fastChainSpeed = normalChainSpeed * 6.67; // Maintain same ratio as before
	veryFastChainSpeed = normalChainSpeed * 20; // Maintain same ratio as before
	if (speedLevel === 0) {
		chainSpeed = normalChainSpeed;
	} else if (speedLevel === 1) {
		chainSpeed = fastChainSpeed;
	} else {
		chainSpeed = veryFastChainSpeed;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -214,8 +214,16 @@
 /**** 
 * Game Code
 ****/ 
 // Fire effect pool management
+function _typeof(o) {
+	"@babel/helpers - typeof";
+	return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
+		return typeof o;
+	} : function (o) {
+		return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
+	}, _typeof(o);
+}
 function getFireEffect() {
 	var fireEffect;
 	if (fireEffectPool.length > 0) {
 		fireEffect = fireEffectPool.pop();
@@ -1064,16 +1072,19 @@
 		}
 		// Close the gap by moving all balls after the removed section forward
 		for (var i = firstBlastIndex; i < chain.length; i++) {
 			var ball = chain[i];
-			// Add safety check for undefined ball and trackPosition
-			if (ball && ball.trackPosition !== undefined) {
+			// Add comprehensive safety check for ball existence and trackPosition
+			if (ball && _typeof(ball) === 'object' && ball.trackPosition !== undefined) {
 				// Move the ball's track position forward to close the gap
 				ball.trackPosition -= gapSize;
-			} else if (ball && ball.trackPosition === undefined) {
+			} else if (ball && _typeof(ball) === 'object' && ball.trackPosition === undefined) {
 				// Initialize trackPosition if undefined
 				ball.trackPosition = i * 7.0; // Use index-based positioning
 				ball.trackPosition -= gapSize;
+			} else if (!ball || _typeof(ball) !== 'object') {
+				// Skip invalid ball entries
+				continue;
 			}
 		}
 		// Comprehensive re-spacing to ensure no gaps remain
 		// Start from the beginning and ensure each ball has proper spacing