/**** 
* Classes
****/ 
var Fish = Container.expand(function (type, speed) {
	var self = Container.call(this);
	self.type = type || 'smallFish';
	self.speed = speed || 2;
	self.value = 1;
	self.lastY = 0;
	if (self.type === 'smallFish') {
		self.value = 1;
		self.danger = 0;
	} else if (self.type === 'mediumFish') {
		self.value = 2;
		self.danger = 0.5;
	} else if (self.type === 'largeFish') {
		self.value = 4;
		self.danger = 1;
	} else if (self.type === 'goldenFish') {
		self.value = 10;
		self.danger = 0;
	}
	var fishGraphics = self.attachAsset(self.type, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.direction = Math.random() > 0.5 ? 1 : -1;
	fishGraphics.scale.x = self.direction;
	self.update = function () {
		self.lastY = self.y;
		self.x += self.speed * self.direction;
		// Wrap around screen
		if (self.x < -100 && self.direction < 0) {
			self.x = 2148;
		} else if (self.x > 2148 && self.direction > 0) {
			self.x = -100;
		}
	};
	return self;
});
var Obstacle = Container.expand(function (speed) {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = speed || 1;
	self.damage = 10;
	self.lastY = 0;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
		// Remove if off screen
		if (self.y > 2832) {
			self.shouldRemove = true;
		}
	};
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerupGraphics = self.attachAsset('powerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = Math.random() > 0.5 ? 'speed' : 'invincibility';
	self.speed = 1;
	self.lastY = 0;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
		// Simple animation
		self.rotation += 0.02;
		// Remove if off screen
		if (self.y > 2832) {
			self.shouldRemove = true;
		}
	};
	return self;
});
// Set ocean blue background
var Shark = Container.expand(function () {
	var self = Container.call(this);
	var sharkGraphics = self.attachAsset('shark', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.size = 1;
	self.speed = 5;
	self.health = 100;
	self.oxygen = 100;
	self.score = 0;
	self.lastX = 0;
	self.lastY = 0;
	self.facing = 1; // 1 = right, -1 = left
	self.update = function () {
		self.lastX = self.x;
		self.lastY = self.y;
		// Reduce oxygen when deep in the ocean (upper part of the screen is surface)
		if (self.y > 1000) {
			self.oxygen -= 0.2;
			if (self.oxygen <= 0) {
				self.health -= 0.5;
			}
		} else {
			// Replenish oxygen near the surface
			self.oxygen = Math.min(100, self.oxygen + 0.5);
		}
		// Update scale based on size
		self.scale.set(self.size);
		// Flip shark graphic based on direction
		if (self.facing === 1) {
			sharkGraphics.scale.x = Math.abs(sharkGraphics.scale.x);
		} else {
			sharkGraphics.scale.x = -Math.abs(sharkGraphics.scale.x);
		}
	};
	self.grow = function (amount) {
		self.size += amount;
		self.score += Math.round(amount * 10);
	};
	self.takeDamage = function (amount) {
		self.health -= amount;
		LK.getSound('damage').play();
		LK.effects.flashObject(self, 0xff0000, 500);
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Set ocean blue background
game.setBackgroundColor(0x006994);
// Game variables
var shark;
var fishes = [];
var obstacles = [];
var powerUps = [];
var lastIntersectingFish = {};
var lastIntersectingObstacle = {};
var lastIntersectingPowerUp = {};
var gameActive = true;
var powerUpActive = false;
var powerUpTimer = 0;
var spawnTimer = 0;
var difficultyTimer = 0;
var difficulty = 1;
var maxFishes = 10;
var dragNode = null;
// UI elements
var scoreText = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0, 0);
LK.gui.topLeft.addChild(scoreText);
scoreText.x = 120;
scoreText.y = 20;
var healthBarBg = LK.getAsset('healthBg', {
	anchorX: 0,
	anchorY: 0.5,
	x: 120,
	y: 100
});
LK.gui.topLeft.addChild(healthBarBg);
var healthBarFill = LK.getAsset('healthBar', {
	anchorX: 0,
	anchorY: 0.5,
	x: 120,
	y: 100
});
LK.gui.topLeft.addChild(healthBarFill);
var oxygenBarBg = LK.getAsset('oxygenBg', {
	anchorX: 0,
	anchorY: 0.5,
	x: 120,
	y: 150
});
LK.gui.topLeft.addChild(oxygenBarBg);
var oxygenBarFill = LK.getAsset('oxygen', {
	anchorX: 0,
	anchorY: 0.5,
	x: 120,
	y: 150
});
LK.gui.topLeft.addChild(oxygenBarFill);
// Initialize shark
function initGame() {
	// Create shark
	shark = new Shark();
	shark.x = 2048 / 2;
	shark.y = 2732 / 2;
	game.addChild(shark);
	// Reset variables
	fishes = [];
	obstacles = [];
	powerUps = [];
	lastIntersectingFish = {};
	lastIntersectingObstacle = {};
	lastIntersectingPowerUp = {};
	gameActive = true;
	powerUpActive = false;
	powerUpTimer = 0;
	spawnTimer = 0;
	difficultyTimer = 0;
	difficulty = 1;
	LK.setScore(0);
	// Spawn initial fish
	for (var i = 0; i < 5; i++) {
		spawnFish();
	}
}
// Spawn a new fish
function spawnFish() {
	var fishType;
	var rand = Math.random();
	if (rand < 0.05) {
		fishType = 'goldenFish';
	} else if (rand < 0.2) {
		fishType = 'largeFish';
	} else if (rand < 0.5) {
		fishType = 'mediumFish';
	} else {
		fishType = 'smallFish';
	}
	var speed = 1 + Math.random() * 2 * difficulty;
	var fish = new Fish(fishType, speed);
	// Position fish at random height, but from the side
	fish.y = 200 + Math.random() * 2300;
	if (Math.random() > 0.5) {
		fish.x = -50;
		fish.direction = 1;
	} else {
		fish.x = 2098;
		fish.direction = -1;
	}
	fishes.push(fish);
	game.addChild(fish);
}
// Spawn an obstacle
function spawnObstacle() {
	var obstacle = new Obstacle(1 + Math.random() * difficulty);
	obstacle.x = 100 + Math.random() * 1848;
	obstacle.y = -100;
	obstacles.push(obstacle);
	game.addChild(obstacle);
}
// Spawn a power-up
function spawnPowerUp() {
	var powerUp = new PowerUp();
	powerUp.x = 100 + Math.random() * 1848;
	powerUp.y = -100;
	powerUps.push(powerUp);
	game.addChild(powerUp);
}
// Handle shark collision with fish
function handleFishCollision(fish, index) {
	// Check if shark can eat this fish
	if (shark.size >= fish.danger) {
		// Shark eats fish
		shark.grow(fish.value * 0.05);
		// Reduce width and height by 20 when eating golden fish
		if (fish.type === 'goldenFish') {
			var sharkGraphics = shark.getChildAt(0);
			sharkGraphics.width -= 20;
			sharkGraphics.height -= 20;
		}
		LK.setScore(shark.score);
		scoreText.setText("Score: " + shark.score);
		LK.getSound('eat').play();
		// Remove fish
		fish.destroy();
		fishes.splice(index, 1);
	} else {
		// Fish damages shark
		shark.takeDamage(5 * fish.danger);
	}
}
// Game events
game.move = function (x, y, obj) {
	if (!gameActive || !dragNode) return;
	// Move shark to touch position
	dragNode.x = x;
	dragNode.y = y;
	// Update shark direction based on movement
	if (dragNode.x > dragNode.lastX) {
		dragNode.facing = 1;
	} else if (dragNode.x < dragNode.lastX) {
		dragNode.facing = -1;
	}
};
game.down = function (x, y, obj) {
	if (!gameActive) return;
	dragNode = shark;
	game.move(x, y, obj);
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// Main game update
game.update = function () {
	if (!gameActive) return;
	// Increase difficulty over time
	difficultyTimer++;
	if (difficultyTimer >= 600) {
		// Every 10 seconds
		difficulty += 0.1;
		maxFishes = Math.min(20, maxFishes + 1);
		difficultyTimer = 0;
	}
	// Update shark
	shark.update();
	// Update UI
	healthBarFill.width = shark.health / 100 * 200;
	oxygenBarFill.width = shark.oxygen / 100 * 200;
	// Check if game over
	if (shark.health <= 0) {
		gameActive = false;
		LK.effects.flashScreen(0xff0000, 1000);
		LK.showGameOver();
		return;
	}
	// Spawn new entities
	spawnTimer++;
	if (spawnTimer >= 60) {
		// Every second
		if (fishes.length < maxFishes) {
			spawnFish();
		}
		if (Math.random() < 0.2 * difficulty) {
			spawnObstacle();
		}
		if (Math.random() < 0.05) {
			spawnPowerUp();
		}
		spawnTimer = 0;
	}
	// Handle power-up timer
	if (powerUpActive) {
		powerUpTimer--;
		if (powerUpTimer <= 0) {
			powerUpActive = false;
			shark.speed = 5;
		}
	}
	// Update fishes and check collisions
	for (var i = fishes.length - 1; i >= 0; i--) {
		var fish = fishes[i];
		fish.update();
		var id = "fish" + i;
		var isIntersecting = shark.intersects(fish);
		// Check collision (transition from not intersecting to intersecting)
		if (!lastIntersectingFish[id] && isIntersecting) {
			handleFishCollision(fish, i);
			continue; // Skip further processing if fish was eaten
		}
		lastIntersectingFish[id] = isIntersecting;
	}
	// Update obstacles and check collisions
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obstacle = obstacles[i];
		obstacle.update();
		if (obstacle.shouldRemove) {
			obstacle.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		var id = "obstacle" + i;
		var isIntersecting = shark.intersects(obstacle);
		// Check collision (transition from not intersecting to intersecting)
		if (!lastIntersectingObstacle[id] && isIntersecting) {
			if (!powerUpActive || powerUpActive && shark.type !== 'invincibility') {
				shark.takeDamage(obstacle.damage);
			}
		}
		lastIntersectingObstacle[id] = isIntersecting;
	}
	// Update power-ups and check collisions
	for (var i = powerUps.length - 1; i >= 0; i--) {
		var powerUp = powerUps[i];
		powerUp.update();
		if (powerUp.shouldRemove) {
			powerUp.destroy();
			powerUps.splice(i, 1);
			continue;
		}
		var id = "powerUp" + i;
		var isIntersecting = shark.intersects(powerUp);
		// Check collision (transition from not intersecting to intersecting)
		if (!lastIntersectingPowerUp[id] && isIntersecting) {
			// Apply power-up effect
			powerUpActive = true;
			powerUpTimer = 300; // 5 seconds
			if (powerUp.type === 'speed') {
				shark.speed = 10;
			}
			// Increase health by 15 when collecting any power-up
			shark.health = Math.min(100, shark.health + 15);
			LK.getSound('powerup').play();
			LK.effects.flashObject(shark, 0x00ffff, 500);
			// Remove power-up
			powerUp.destroy();
			powerUps.splice(i, 1);
		}
		lastIntersectingPowerUp[id] = isIntersecting;
	}
};
// Initialize the game
initGame();

===================================================================
--- original.js
+++ change.js
@@ -266,13 +266,13 @@
 	// Check if shark can eat this fish
 	if (shark.size >= fish.danger) {
 		// Shark eats fish
 		shark.grow(fish.value * 0.05);
-		// Reduce width and height by 30 when eating golden fish
+		// Reduce width and height by 20 when eating golden fish
 		if (fish.type === 'goldenFish') {
 			var sharkGraphics = shark.getChildAt(0);
-			sharkGraphics.width -= 30;
-			sharkGraphics.height -= 30;
+			sharkGraphics.width -= 20;
+			sharkGraphics.height -= 20;
 		}
 		LK.setScore(shark.score);
 		scoreText.setText("Score: " + shark.score);
 		LK.getSound('eat').play();