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

/**** 
* Classes
****/ 
var Memecoin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.attachAsset('memecoin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.active = true;
	self.collected = false;
	self.update = function () {
		if (!self.active) {
			return;
		}
		self.x -= self.speed;
		// Rotate coin
		coinGraphics.rotation += 0.03;
		// Remove when off screen
		if (self.x < -100) {
			self.active = false;
		}
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.vx = 0;
	self.vy = 0;
	self.gravity = 0.5;
	self.jumpPower = -25; // Increased jump power from -15 to -25
	self.isJumping = false;
	self.isDead = false;
	self.lastWasIntersecting = false;
	self.jump = function () {
		// Find if player is standing on a green signal
		var standingOnGreenSignal = signals.some(function (s) {
			return player && s.type === 'green' && player.intersects(s) && Math.abs(player.y - (s.y - 275)) < 10;
		});
		if (!self.isDead && (self.vy === 0 || standingOnGreenSignal)) {
			self.vy = self.jumpPower;
			self.isJumping = true;
			LK.getSound('jump').play();
		}
	};
	self.update = function () {
		if (self.isDead) {
			return;
		}
		// Store last position for collision detection
		self.lastY = self.y;
		// Apply gravity
		self.vy += self.gravity;
		// Apply movement
		self.y += self.vy;
		// Track if player is jumping or falling
		self.isJumping = self.vy !== 0;
		// Ground collision detection
		if (self.y > 2732 - playerGraphics.height / 2) {
			// Bottom of screen
			self.y = 2732 - playerGraphics.height / 2;
			self.vy = 0;
			self.isJumping = false;
		}
	};
	return self;
});
var Shark = Container.expand(function () {
	var self = Container.call(this);
	var sharkGraphics = self.attachAsset('shark', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.direction = 1;
	self.centerY = 2732 - sharkGraphics.height / 2;
	self.update = function () {
		// Keep shark at constant y position
		self.y = self.centerY;
		// Check if player exists and has fallen to shark's height level
		if (player && player.y > 2732 - 350) {
			// Shark hunts player - move toward player position
			self.direction = player.x > self.x ? 1 : -1;
			self.speed = 8; // Increase speed when hunting
			// Set correct shark orientation based on direction
			sharkGraphics.scale.x = self.direction;
		} else {
			// Normal back-and-forth movement when player isn't at shark level
			self.speed = 5;
			// Check if shark reached boundaries and change direction
			if (self.x > 1800 && self.direction === 1) {
				self.direction = -1;
				sharkGraphics.scale.x = -1;
			} else if (self.x < 200 && self.direction === -1) {
				self.direction = 1;
				sharkGraphics.scale.x = 1;
			}
		}
		// Apply movement
		self.x += self.speed * self.direction;
	};
	return self;
});
var Signal = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type || 'green';
	var assetId = self.type === 'green' ? 'greenSignal' : 'redSignal';
	var signalGraphics = self.attachAsset(assetId, {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1 / 1.2,
		scaleY: 1 / 1.2
	});
	// Rotate signal by 90 degrees to the left
	signalGraphics.rotation = -Math.PI / 2; // -90 degrees in radians
	self.speed = 3.5;
	self.active = true;
	self.update = function () {
		if (!self.active) {
			return;
		}
		self.x -= self.speed;
		// Remove when off screen only if player is not jumping/falling
		// Make sure we keep signals visible while player is falling
		if (self.x < -200) {
			// Only deactivate if player doesn't exist or if player is not jumping/falling
			if (!player || !player.isJumping && player.vy <= 0) {
				self.active = false;
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x00142A
});

/**** 
* Game Code
****/ 
// Game variables
var player;
var signals = [];
var memecoins = [];
var shark;
var isGameActive = true;
var gameSpeed = 1;
var lastSignalTime = 0;
var lastCoinTime = 0;
var score = 0;
var scoreIncrement = 0.1;
var distanceTraveled = 0;
// UI elements
var scoreTxt;
var highScoreTxt;
// Initialize UI
function initUI() {
	// Score text
	scoreTxt = new Text2('SCORE: 0', {
		size: 70,
		fill: 0xFFFFFF
	});
	scoreTxt.anchor.set(0.5, 0);
	LK.gui.top.addChild(scoreTxt);
	scoreTxt.y = 0;
	// High score text
	var highScore = storage.highScore || 0;
	highScoreTxt = new Text2('HIGH SCORE: ' + Math.floor(highScore), {
		size: 50,
		fill: 0xFFD700
	});
	highScoreTxt.anchor.set(0.5, 0);
	LK.gui.top.addChild(highScoreTxt);
	highScoreTxt.y = 80;
}
// Initialize game world
function initGame() {
	isGameActive = true;
	score = 0;
	distanceTraveled = 0;
	gameSpeed = 1;
	// Create player at top left, ready to fall
	player = new Player();
	player.x = 200;
	player.y = 100;
	player.vy = 5; // Start with downward velocity
	game.addChild(player);
	// Create shark
	shark = new Shark();
	shark.y = 2732 - 100;
	game.addChild(shark);
	// Clear signals and coins
	clearEntities();
	// Create initial signals that have already reached the left side
	var recentHeights = [];
	var heightThreshold = 30; // Maximum allowed vertical difference to consider signals at "same height"
	for (var i = 0; i < 44; i++) {
		var signalType = Math.random() < 0.5 ? 'green' : 'red';
		// For signals that are lower than the previous, make them red
		// For signals that are higher than the previous, make them green
		var lastY = 1500;
		if (signals.length > 0) {
			lastY = signals[signals.length - 1].y;
		}
		var newY;
		var willBeHigher = Math.random() < 0.5;
		if (willBeHigher) {
			// More gradual ascent with varied height differences
			var heightDiff = 100 + Math.random() * 150;
			newY = lastY - heightDiff;
			signalType = 'green';
		} else {
			// More gradual descent with varied height differences
			var heightDiff = 100 + Math.random() * 150;
			newY = lastY + heightDiff;
			signalType = 'red';
		}
		// Check if this height is too similar to recent heights
		var isTooSimilar = recentHeights.length > 0 && recentHeights.some(function (height) {
			return Math.abs(newY - height) < heightThreshold;
		});
		// If too similar, adjust the height to avoid repetition
		if (isTooSimilar) {
			if (signalType === 'green') {
				newY -= 40 + Math.random() * 60;
			} else {
				newY += 40 + Math.random() * 60;
			}
		}
		// Ensure signal stays within playable area
		newY = Math.max(800, Math.min(2200, newY));
		// Store this height for future comparison
		recentHeights.push(newY);
		if (recentHeights.length > 10) {
			recentHeights.shift(); // Keep only last 10 heights
		}
		var signal = new Signal(signalType);
		// Position signals already at the left side of the screen
		signal.x = -150 + i * 50; // Distribute signals across the left edge
		signal.y = newY;
		signals.push(signal);
		game.addChild(signal);
	}
	// Start game music
	LK.playMusic('gameMusic');
}
// Clear all entities
function clearEntities() {
	for (var i = signals.length - 1; i >= 0; i--) {
		signals[i].destroy();
		signals.splice(i, 1);
	}
	for (var i = memecoins.length - 1; i >= 0; i--) {
		memecoins[i].destroy();
		memecoins.splice(i, 1);
	}
}
// Spawn signals
function spawnSignal() {
	var currentTime = Date.now();
	// Spawn signals at intervals that maintain consistent spacing regardless of score
	// At higher scores (1000+), we need to keep a minimum time between signals
	var baseInterval = 300;
	var minInterval = 150;
	var adjustedInterval = score > 1000 ? Math.max(minInterval, baseInterval / gameSpeed) : baseInterval / gameSpeed;
	if (currentTime - lastSignalTime > adjustedInterval) {
		// This ensures spacing remains consistent even at high scores
		var signal;
		var lastSignalY = 1500; // Default Y position if no signals exist
		// Get the Y position of the last signal to compare with
		if (signals.length > 0) {
			var lastSignal = signals[signals.length - 1];
			lastSignalY = lastSignal.y;
		}
		// Calculate a new Y position
		var newY;
		var willBeHigher = Math.random() < 0.5; // 50% chance to go higher
		// Count consecutive red signals
		var redSignalCount = 0;
		// Find the last signal of each type for height comparison
		var lastGreenY = null;
		var lastRedY = null;
		// Track recent signal heights to prevent repetition
		var recentHeights = [];
		var heightThreshold = 30; // Maximum allowed vertical difference to consider signals at "same height"
		// Collect the last few signal heights for comparison
		for (var i = signals.length - 1; i >= Math.max(0, signals.length - 10); i--) {
			recentHeights.push(signals[i].y);
		}
		// Find the last green and red signal Y positions
		for (var i = signals.length - 1; i >= 0; i--) {
			if (signals[i].type === 'green' && lastGreenY === null) {
				lastGreenY = signals[i].y;
			}
			if (signals[i].type === 'red' && lastRedY === null) {
				lastRedY = signals[i].y;
			}
			if (lastGreenY !== null && lastRedY !== null) {
				break;
			}
		}
		for (var i = signals.length - 1; i >= Math.max(0, signals.length - 5); i--) {
			if (signals[i] && signals[i].type === 'red') {
				redSignalCount++;
			} else {
				break;
			}
		}
		// Force green signal if we've had 5 reds in a row
		if (redSignalCount >= 5) {
			// Force green signal (must be higher) but with more gradual ascent
			newY = lastSignalY - (100 + Math.random() * 150);
			signal = new Signal('green');
		} else if (willBeHigher) {
			// This signal will be higher (ascending)
			// More gradual height difference for green signals
			var heightDiff = 80 + Math.random() * 120; // Reduced for more cascading effect
			if (lastGreenY !== null && Math.abs(lastSignalY - heightDiff - lastGreenY) > 200) {
				// Limit the maximum height change between signals of same color
				heightDiff = Math.min(heightDiff, 200);
			}
			newY = lastSignalY - heightDiff;
			// Higher signals must be green
			signal = new Signal('green');
		} else {
			// This signal will be lower (descending)
			// More gradual height difference for red signals
			var heightDiff = 80 + Math.random() * 120; // Reduced for more cascading effect
			if (lastRedY !== null && Math.abs(lastSignalY + heightDiff - lastRedY) > 200) {
				// Limit the maximum height change between signals of same color
				heightDiff = Math.min(heightDiff, 200);
			}
			newY = lastSignalY + heightDiff;
			// Check if we would have too many consecutive red signals
			var wouldBeConsecutiveReds = redSignalCount + 1;
			if (wouldBeConsecutiveReds >= 5) {
				// Force this to be a green signal instead with gradual ascent
				newY = lastSignalY - (100 + Math.random() * 150);
				signal = new Signal('green');
			} else {
				// Lower signals must be red
				signal = new Signal('red');
			}
		}
		// Ensure signal stays within playable area
		newY = Math.max(800, Math.min(2200, newY));
		// Add height variation to signals and prevent consecutive similar heights
		if (signal.type === 'green') {
			// Green signals with cascading heights - increased variations
			var greenOffset = Math.random() * 50 + 10;
			// Check if this height is too similar to recent heights
			var isTooSimilar = recentHeights.some(function (height) {
				return Math.abs(newY - greenOffset - height) < heightThreshold;
			});
			// If too similar, increase the offset to ensure different height
			if (isTooSimilar) {
				greenOffset += 30 + Math.random() * 40;
			}
			newY -= greenOffset;
		} else if (signal.type === 'red') {
			// Red signals with cascading heights - increased variations
			var redOffset = Math.random() * 50 + 10;
			// Check if this height is too similar to recent heights
			var isTooSimilar = recentHeights.some(function (height) {
				return Math.abs(newY + redOffset - height) < heightThreshold;
			});
			// If too similar, increase the offset to ensure different height
			if (isTooSimilar) {
				redOffset += 30 + Math.random() * 40;
			}
			newY += redOffset;
		}
		signal.x = 2048 + 150;
		signal.y = newY;
		signals.push(signal);
		game.addChild(signal);
		lastSignalTime = currentTime;
	}
}
// Spawn memecoins
function spawnMemecoin() {
	var currentTime = Date.now();
	// Spawn coins less frequently than signals - doubled interval from 3000 to 6000
	if (currentTime - lastCoinTime > 6000 / gameSpeed) {
		// Find green signals that are still on screen (or about to enter)
		var greenSignals = signals.filter(function (signal) {
			return signal.type === 'green' && signal.x > -200 && signal.x < 2300;
		});
		// Only spawn coin if we have green signals
		if (greenSignals.length > 0) {
			// Pick a random green signal
			var randomGreenSignal = greenSignals[Math.floor(Math.random() * greenSignals.length)];
			var coin = new Memecoin();
			coin.x = 2048 + 150;
			// Position coin above the green signal (50-150px higher)
			coin.y = randomGreenSignal.y - randomGreenSignal.width / 2 - 100 - Math.random() * 100;
			memecoins.push(coin);
			game.addChild(coin);
			lastCoinTime = currentTime;
		}
	}
}
// Check collisions between player and signals/coins/shark
function checkCollisions() {
	if (!isGameActive) {
		return;
	}
	// Check signal collisions
	for (var i = 0; i < signals.length; i++) {
		var signal = signals[i];
		if (signal.active && player.intersects(signal)) {
			// Store previous intersection state
			var wasIntersecting = player.lastWasIntersecting;
			player.lastWasIntersecting = true;
			// Only handle collision if this is a new intersection
			if (!wasIntersecting) {
				// Check if player is above the signal and falling down
				// The signal is rotated 90 degrees left, so we need to detect its height properly
				// Signal's height is now its width because of the rotation
				var signalHeight = 50 / 1.2; // Original height divided by scale factor
				var signalWidth = 500 / 1.2; // Original width divided by scale factor
				var playerHeight = 150; // Player height
				// Calculate where the top of the signal is considering rotation
				if (player.y < signal.y - signalWidth / 2 && player.vy > 0) {
					if (signal.type === 'green') {
						// Land on green signals but don't automatically jump
						// Position player properly on top of the signal
						player.y = signal.y - signalWidth / 2 - playerHeight / 2;
						player.vy = 0;
						player.isJumping = false;
					} else if (signal.type === 'red') {
						// Pass through red signals, ignore collision
						// Don't land on red signals, continue falling
						player.vy += player.gravity;
						player.isJumping = true;
					}
				}
			}
		} else if (signal.active) {
			// If not intersecting this signal, reset lastWasIntersecting
			player.lastWasIntersecting = false;
		}
	}
	// Check memecoin collisions
	for (var i = 0; i < memecoins.length; i++) {
		var coin = memecoins[i];
		if (coin.active && !coin.collected && player.intersects(coin)) {
			// Collect coin
			coin.collected = true;
			// Add points
			score += 50;
			scoreTxt.setText('SCORE: ' + Math.floor(score));
			// Flash coin and remove
			LK.effects.flashObject(coin, 0xFFFFFF, 300);
			LK.getSound('coinCollect').play();
			tween(coin, {
				alpha: 0,
				scaleX: 2,
				scaleY: 2
			}, {
				duration: 300,
				onFinish: function onFinish() {
					coin.active = false;
				}
			});
		}
	}
	// Check shark collision
	if (player.y > 2732 - player.height && player.intersects(shark)) {
		// Game over if player touches shark
		gameOver();
	}
}
// Clean up inactive entities
function cleanupEntities() {
	// Remove inactive signals
	for (var i = signals.length - 1; i >= 0; i--) {
		// Only remove signals if player is not jumping or falling
		if (!signals[i].active) {
			// Add extra conditions to ensure we don't remove signals that player might need to land on
			if (!player || !player.isJumping && player.vy <= 0) {
				signals[i].destroy();
				signals.splice(i, 1);
			}
		}
	}
	// Remove inactive coins
	for (var i = memecoins.length - 1; i >= 0; i--) {
		if (!memecoins[i].active) {
			memecoins[i].destroy();
			memecoins.splice(i, 1);
		}
	}
}
// Game over
function gameOver() {
	isGameActive = false;
	player.isDead = true;
	// Play crash sound
	LK.getSound('crash').play();
	// Flash screen red
	LK.effects.flashScreen(0xFF0000, 500);
	// Update high score
	var highScore = storage.highScore || 0;
	if (score > highScore) {
		storage.highScore = score;
		highScoreTxt.setText('HIGH SCORE: ' + Math.floor(score));
	}
	// Show game over after a short delay
	LK.setTimeout(function () {
		LK.showGameOver();
	}, 800);
}
// Input handling
game.down = function (x, y, obj) {
	// Jump when tapping/clicking
	player.jump();
};
// Main game update loop
game.update = function () {
	if (!isGameActive) {
		return;
	}
	// Update score based on distance
	distanceTraveled += gameSpeed;
	score += scoreIncrement * gameSpeed;
	// Update score display occasionally to avoid text updates every frame
	if (Math.floor(score) % 5 === 0) {
		scoreTxt.setText('SCORE: ' + Math.floor(score));
	}
	// Increase game speed gradually
	gameSpeed = 1 + distanceTraveled / 10000;
	// Spawn entities
	spawnSignal();
	spawnMemecoin();
	// Check collisions
	checkCollisions();
	// Remove inactive entities
	cleanupEntities();
	// Check if player fell off screen
	if (player.y > 2732 + 200) {
		gameOver();
	}
};
// Initialize UI and game
initUI();
initGame();
// Track signal status globally
game.onEntityDestroyed = function (entity) {
	// Keep track of destroyed entities if needed
	if (entity instanceof Signal && player) {
		// Keep signals around longer if player is falling or jumping
		if (player.isJumping || player.vy > 0) {
			// Return false to prevent deletion when player might need to land
			return false;
		}
	}
	return true;
};

===================================================================
--- original.js
+++ change.js
@@ -206,8 +206,10 @@
 	game.addChild(shark);
 	// Clear signals and coins
 	clearEntities();
 	// Create initial signals that have already reached the left side
+	var recentHeights = [];
+	var heightThreshold = 30; // Maximum allowed vertical difference to consider signals at "same height"
 	for (var i = 0; i < 44; i++) {
 		var signalType = Math.random() < 0.5 ? 'green' : 'red';
 		// For signals that are lower than the previous, make them red
 		// For signals that are higher than the previous, make them green
@@ -216,43 +218,38 @@
 			lastY = signals[signals.length - 1].y;
 		}
 		var newY;
 		var willBeHigher = Math.random() < 0.5;
-		// Get a history of heights to check for similar positions
-		var recentHeights = signals.slice(Math.max(0, signals.length - 5)).map(function (s) {
-			return s.y;
-		});
-		var heightHistogram = {};
-		recentHeights.forEach(function (h) {
-			// Round to nearest 50px for histogram grouping
-			var heightBucket = Math.round(h / 50) * 50;
-			heightHistogram[heightBucket] = (heightHistogram[heightBucket] || 0) + 1;
-		});
 		if (willBeHigher) {
-			// More gradual ascent with variable height differences
-			var heightDiff = 100 + Math.random() * 200;
+			// More gradual ascent with varied height differences
+			var heightDiff = 100 + Math.random() * 150;
 			newY = lastY - heightDiff;
 			signalType = 'green';
-			// Check if this height is already common in recent signals
-			var heightBucket = Math.round(newY / 50) * 50;
-			if (heightHistogram[heightBucket] && heightHistogram[heightBucket] > 1) {
-				// Adjust height to avoid duplication
-				newY -= 75 + Math.random() * 100;
-			}
 		} else {
-			// More gradual descent with variable height differences
-			var heightDiff = 100 + Math.random() * 200;
+			// More gradual descent with varied height differences
+			var heightDiff = 100 + Math.random() * 150;
 			newY = lastY + heightDiff;
 			signalType = 'red';
-			// Check if this height is already common in recent signals
-			var heightBucket = Math.round(newY / 50) * 50;
-			if (heightHistogram[heightBucket] && heightHistogram[heightBucket] > 1) {
-				// Adjust height to avoid duplication
-				newY += 75 + Math.random() * 100;
+		}
+		// Check if this height is too similar to recent heights
+		var isTooSimilar = recentHeights.length > 0 && recentHeights.some(function (height) {
+			return Math.abs(newY - height) < heightThreshold;
+		});
+		// If too similar, adjust the height to avoid repetition
+		if (isTooSimilar) {
+			if (signalType === 'green') {
+				newY -= 40 + Math.random() * 60;
+			} else {
+				newY += 40 + Math.random() * 60;
 			}
 		}
 		// Ensure signal stays within playable area
 		newY = Math.max(800, Math.min(2200, newY));
+		// Store this height for future comparison
+		recentHeights.push(newY);
+		if (recentHeights.length > 10) {
+			recentHeights.shift(); // Keep only last 10 heights
+		}
 		var signal = new Signal(signalType);
 		// Position signals already at the left side of the screen
 		signal.x = -150 + i * 50; // Distribute signals across the left edge
 		signal.y = newY;
@@ -297,8 +294,15 @@
 		var redSignalCount = 0;
 		// Find the last signal of each type for height comparison
 		var lastGreenY = null;
 		var lastRedY = null;
+		// Track recent signal heights to prevent repetition
+		var recentHeights = [];
+		var heightThreshold = 30; // Maximum allowed vertical difference to consider signals at "same height"
+		// Collect the last few signal heights for comparison
+		for (var i = signals.length - 1; i >= Math.max(0, signals.length - 10); i--) {
+			recentHeights.push(signals[i].y);
+		}
 		// Find the last green and red signal Y positions
 		for (var i = signals.length - 1; i >= 0; i--) {
 			if (signals[i].type === 'green' && lastGreenY === null) {
 				lastGreenY = signals[i].y;
@@ -354,27 +358,31 @@
 			}
 		}
 		// Ensure signal stays within playable area
 		newY = Math.max(800, Math.min(2200, newY));
-		// Find signals of the same type at similar heights to prevent signals at the same height
-		var similarHeightSignals = signals.filter(function (s) {
-			return s.type === signal.type && Math.abs(s.y - newY) < 50;
-		});
-		// Add increased height variation to signals to prevent overlap
+		// Add height variation to signals and prevent consecutive similar heights
 		if (signal.type === 'green') {
-			// Green signals with cascading heights - adjust height based on existing signals
-			var greenOffset = Math.random() * 35 + 15;
-			if (similarHeightSignals.length > 0) {
-				// If there are similar height signals, increase offset to ensure separation
-				greenOffset += similarHeightSignals.length * 25;
+			// Green signals with cascading heights - increased variations
+			var greenOffset = Math.random() * 50 + 10;
+			// Check if this height is too similar to recent heights
+			var isTooSimilar = recentHeights.some(function (height) {
+				return Math.abs(newY - greenOffset - height) < heightThreshold;
+			});
+			// If too similar, increase the offset to ensure different height
+			if (isTooSimilar) {
+				greenOffset += 30 + Math.random() * 40;
 			}
 			newY -= greenOffset;
 		} else if (signal.type === 'red') {
-			// Red signals with cascading heights - adjust height based on existing signals
-			var redOffset = Math.random() * 35 + 15;
-			if (similarHeightSignals.length > 0) {
-				// If there are similar height signals, increase offset to ensure separation
-				redOffset += similarHeightSignals.length * 25;
+			// Red signals with cascading heights - increased variations
+			var redOffset = Math.random() * 50 + 10;
+			// Check if this height is too similar to recent heights
+			var isTooSimilar = recentHeights.some(function (height) {
+				return Math.abs(newY + redOffset - height) < heightThreshold;
+			});
+			// If too similar, increase the offset to ensure different height
+			if (isTooSimilar) {
+				redOffset += 30 + Math.random() * 40;
 			}
 			newY += redOffset;
 		}
 		signal.x = 2048 + 150;