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

/**** 
* Classes
****/ 
var AICell = Container.expand(function () {
	var self = Container.call(this);
	var cellGraphics = self.attachAsset('cell', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// self.size is set on spawnAICell for variety
	self.speed = 2 + Math.random();
	self.targetX = Math.random() * 8192;
	self.targetY = Math.random() * 8192;
	self.alive = true;
	self.lastX = self.x;
	self.lastY = self.y;
	self.update = function () {
		if (!self.alive) {
			return;
		}
		// --- AI Hunt Player Logic ---
		// Only some AI cells hunt the player, and only one at a time
		var huntingPlayer = false;
		if (self.huntsPlayer && typeof playerCell !== "undefined" && playerCell !== null) {
			var pdx = playerCell.x - self.x;
			var pdy = playerCell.y - self.y;
			var pdist = Math.sqrt(pdx * pdx + pdy * pdy);
			// Only hunt if AI is bigger than player by 20%
			if (self.size > playerCell.size * 1.2) {
				// Hunt if player is within 2000px (long range)
				if (pdist < 2000) {
					// Check if no one is currently hunting or if this AI is the current hunter
					if (currentHunter === null || currentHunter === self) {
						self.targetX = playerCell.x;
						self.targetY = playerCell.y;
						huntingPlayer = true;
						currentHunter = self; // Set this AI as the current hunter
					}
				} else if (currentHunter === self) {
					// If this AI was hunting but player moved away, stop hunting
					currentHunter = null;
				}
			} else if (currentHunter === self) {
				// If this AI was hunting but is no longer big enough, stop hunting
				currentHunter = null;
			}
		}
		// Move towards target
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 5) {
			// Speed: cells are faster for sizes 50-300, fast until 1000, still fast at 5000, and slow at 20000
			var speed;
			if (self.size > 20000) {
				speed = 1.2;
			} else if (self.size > 5000) {
				speed = 4.5;
			} else if (self.size > 1000) {
				speed = 6.0;
			} else if (self.size > 300) {
				speed = 7.0;
			} else if (self.size >= 50) {
				speed = 9.0;
			} else {
				speed = 7.0;
			}
			self.x += dx / distance * speed;
			self.y += dy / distance * speed;
		} else {
			// Pick new random target
			self.targetX = Math.random() * 22000;
			self.targetY = Math.random() * 22000;
		}
		// Keep within bounds
		if (self.x < self.size / 2) {
			self.x = self.size / 2;
		}
		if (self.x > 22000 - self.size / 2) {
			self.x = 22000 - self.size / 2;
		}
		if (self.y < self.size / 2) {
			self.y = self.size / 2;
		}
		if (self.y > 22000 - self.size / 2) {
			self.y = 22000 - self.size / 2;
		}
		self.lastX = self.x;
		self.lastY = self.y;
	};
	self.grow = function (amount) {
		var oldSize = self.size;
		self.size += amount;
		var scale = self.size / 50;
		tween(cellGraphics, {
			scaleX: scale,
			scaleY: scale
		}, {
			duration: 200,
			easing: tween.easeOut
		});
		self.speed = Math.max(0.8, 2.5 - (self.size - 50) / 60);
	};
	return self;
});
var Food = Container.expand(function () {
	var self = Container.call(this);
	var foodGraphics = self.attachAsset('food', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.size = 20;
	self.consumed = false;
	return self;
});
var Papa = Container.expand(function () {
	var self = Container.call(this);
	var papaGraphics = self.attachAsset('papa', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	papaGraphics.tint = 0xDEB887; // Burlywood color for potato
	self.size = 35;
	self.consumed = false;
	self.growthValue = 50; // All papas give 50 points
	return self;
});
var PlayerCell = Container.expand(function () {
	var self = Container.call(this);
	var cellGraphics = self.attachAsset('cell', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.size = 50;
	self.speed = 3;
	self.targetX = self.x;
	self.targetY = self.y;
	self.grow = function (amount) {
		var oldSize = self.size;
		self.size += amount;
		// Update visual scale
		var scale = self.size / 50;
		tween(cellGraphics, {
			scaleX: scale,
			scaleY: scale
		}, {
			duration: 200,
			easing: tween.easeOut
		});
		// Reduce speed as size increases
		self.speed = Math.max(1, 3 - (self.size - 50) / 50);
		LK.getSound('grow').play();
		LK.setScore(Math.floor(self.size));
	};
	self.update = function () {
		// Slither.io style drag controls: playerCell.targetX/Y is set by drag logic in game.move
		// Move towards target position
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 5) {
			// Speed: player is faster for sizes 50-300, fast until 1000, still fast at 5000, and slow at 20000
			var speed;
			if (self.size > 20000) {
				speed = 1.2;
			} else if (self.size > 5000) {
				speed = 4.5;
			} else if (self.size > 1000) {
				speed = 6;
			} else if (self.size > 300) {
				speed = 7;
			} else if (self.size >= 50) {
				speed = 9.0;
			} else {
				speed = 7;
			}
			self.x += dx / distance * speed;
			self.y += dy / distance * speed;
		}
		// Keep within bounds
		if (self.x < self.size / 2) {
			self.x = self.size / 2;
		}
		if (self.x > 22000 - self.size / 2) {
			self.x = 22000 - self.size / 2;
		}
		if (self.y < self.size / 2) {
			self.y = self.size / 2;
		}
		if (self.y > 22000 - self.size / 2) {
			self.y = 22000 - self.size / 2;
		}
	};
	return self;
});
var PowerFood = Container.expand(function () {
	var self = Container.call(this);
	var powerFoodGraphics = self.attachAsset('powerfood', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	powerFoodGraphics.tint = 0xFFD700; // Golden color
	self.size = 30;
	self.consumed = false;
	self.growthValue = 200; // More growth than regular food
	return self;
});
var Predator = Container.expand(function () {
	var self = Container.call(this);
	var predatorGraphics = self.attachAsset('predator', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.size = 80;
	self.speed = 2.2; // Increased base speed for more challenge
	self.targetX = Math.random() * 8192;
	self.targetY = Math.random() * 8192;
	self.update = function () {
		// Move towards target
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 5) {
			// Predators are faster (difficulty up)
			self.x += dx / distance * 2.1;
			self.y += dy / distance * 2.1;
		} else {
			// Pick new random target
			self.targetX = Math.random() * 22000;
			self.targetY = Math.random() * 22000;
		}
		// Chase player if close enough
		if (typeof playerCell !== "undefined" && playerCell !== null) {
			var playerDx = playerCell.x - self.x;
			var playerDy = playerCell.y - self.y;
			var playerDistance = Math.sqrt(playerDx * playerDx + playerDy * playerDy);
			if (playerDistance < 300 && playerCell.size < self.size) {
				self.x += playerDx / playerDistance * self.speed * 1.5;
				self.y += playerDy / playerDistance * self.speed * 1.5;
			}
		}
		// Keep within bounds
		if (self.x < 0) {
			self.x = 0;
		}
		if (self.x > 22000) {
			self.x = 22000;
		}
		if (self.y < 0) {
			self.y = 0;
		}
		if (self.y > 22000) {
			self.y = 22000;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2C3E50
});

/**** 
* Game Code
****/ 
var playerCell = null;
var foods = [];
var powerFoods = [];
var papas = [];
var predators = [];
var aiCells = [];
var cellsEaten = 0;
var currentHunter = null; // Track which AI cell is currently hunting the player
// --- Slither.io-style Start Screen ---
var startScreen = new Container();
// Animated background: several moving cells
var startBgCells = [];
for (var i = 0; i < 12; i++) {
	var cell = LK.getAsset('cell', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	cell.scaleX = cell.scaleY = 1.2 + Math.random() * 1.8;
	cell.x = 400 + Math.random() * 1248;
	cell.y = 600 + Math.random() * 1600;
	cell.alpha = 0.18 + Math.random() * 0.18;
	cell._vx = (Math.random() - 0.5) * 1.2;
	cell._vy = (Math.random() - 0.5) * 1.2;
	startScreen.addChild(cell);
	startBgCells.push(cell);
}
// Main logo/title
var titleTxt = new Text2("Célula Survival", {
	size: 160,
	fill: "#fff"
});
titleTxt.anchor.set(0.5, 0);
titleTxt.x = 2048 / 2;
titleTxt.y = 320;
startScreen.addChild(titleTxt);
// Subtitle
var subtitleTxt = new Text2("¡Come y sobrevive, evita a los grandes!", {
	size: 64,
	fill: "#fff"
});
subtitleTxt.anchor.set(0.5, 0);
subtitleTxt.x = 2048 / 2;
subtitleTxt.y = 520;
startScreen.addChild(subtitleTxt);
// Name input label
var nameLabel = new Text2("Tu nombre:", {
	size: 64,
	fill: "#fff"
});
nameLabel.anchor.set(0.5, 0);
nameLabel.x = 2048 / 2;
nameLabel.y = 800;
startScreen.addChild(nameLabel);
// Simulated name input (tap to edit)
var playerName = "";
var nameInput = new Text2("Toca para escribir...", {
	size: 80,
	fill: 0xFFFFCC
});
nameInput.anchor.set(0.5, 0);
nameInput.x = 2048 / 2;
nameInput.y = 900;
startScreen.addChild(nameInput);
// Dice icon for random name
var diceIcon = LK.getAsset('centerCircle', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1.1,
	scaleY: 1.1,
	x: nameInput.x + 320,
	y: nameInput.y + 55,
	color: 0xffffff
});
startScreen.addChild(diceIcon);
diceIcon.interactive = true;
diceIcon.buttonMode = true;
// Dice icon click: set random name
diceIcon.down = function (x, y, obj) {
	var allNames = ["Nano", "Blob", "Zeta", "Mito", "Viru", "Giga", "Beta", "Toxi", "Rex", "Lumo", "Fago", "Proto", "Mega", "Pico", "Tera", "Vivo", "Cello", "Dino", "Mobi", "Rondo"];
	playerName = allNames[Math.floor(Math.random() * allNames.length)];
	nameInput.setText(playerName);
	editingName = false;
};
var editingName = false;
nameInput.interactive = true;
nameInput.buttonMode = true;
nameInput.down = function (x, y, obj) {
	editingName = true;
	nameInput.setText((playerName.length > 0 ? playerName : "") + "|");
};
// Start button
var startBtn = new Text2("JUGAR", {
	size: 120,
	fill: 0x00FF99
});
startBtn.anchor.set(0.5, 0.5);
startBtn.x = 2048 / 2;
startBtn.y = 1200;
startBtn.interactive = true;
startBtn.buttonMode = true;
startScreen.addChild(startBtn);
// Credits (bottom)
var creditsTxt = new Text2("Inspirado en Slither.io", {
	size: 40,
	fill: "#aaa"
});
creditsTxt.anchor.set(0.5, 1);
creditsTxt.x = 2048 / 2;
creditsTxt.y = 2732 - 40;
startScreen.addChild(creditsTxt);
// Animate background cells
startScreen.update = function () {
	for (var i = 0; i < startBgCells.length; i++) {
		var c = startBgCells[i];
		c.x += c._vx;
		c.y += c._vy;
		// Bounce off edges
		if (c.x < 200 || c.x > 1848) c._vx *= -1;
		if (c.y < 400 || c.y > 2200) c._vy *= -1;
	}
};
game.update = function (oldUpdate) {
	return function () {
		if (startScreen.visible && startScreen.update) startScreen.update();
		if (typeof oldUpdate === "function") oldUpdate.apply(this, arguments);
	};
}(game.update);
// Name input tap-to-edit logic
game.down = function (x, y, obj) {
	// If editing name, simulate typing by adding a random letter (since we can't get real keyboard input)
	if (editingName) {
		// Simulate: tap = add random letter, long tap = backspace
		if (playerName.length < 10) {
			var letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
			var letter = letters[Math.floor(Math.random() * letters.length)];
			playerName += letter;
		}
		nameInput.setText(playerName + "|");
		// If tap on left side, treat as backspace
		if (x < 2048 / 2 - 200 && playerName.length > 0) {
			playerName = playerName.substring(0, playerName.length - 1);
			nameInput.setText(playerName + "|");
		}
		// If tap on right side, finish editing
		if (x > 2048 / 2 + 200) {
			editingName = false;
			nameInput.setText(playerName.length > 0 ? playerName : "Toca para escribir...");
		}
		return;
	}
};
// Start button logic
startBtn.down = function (x, y, obj) {
	if (playerName.length === 0) {
		playerName = "Tú";
		nameInput.setText(playerName);
	}
	// Hide start screen and start the game
	startScreen.visible = false;
	startScreen.interactive = false;
	startScreen.children.forEach(function (child) {
		child.visible = false;
	});
	startGame();
};
game.addChild(startScreen);
// --- Main game UI (hidden until start) ---
var scoreTxt = new Text2('Size: 50', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Display for #1 (largest cell) score
var topScoreTxt = new Text2('', {
	size: 48,
	fill: 0xFFD700
});
topScoreTxt.anchor.set(0.5, 0);
topScoreTxt.y = 70; // Place below main score, avoid top 100px
LK.gui.top.addChild(topScoreTxt);
// Create a world container for all game objects (slither.io style)
var world = new Container();
game.addChild(world);
// --- Game start logic ---
function startGame() {
	// Initialize player cell
	playerCell = new PlayerCell();
	playerCell.x = 22000 / 2;
	playerCell.y = 22000 / 2;
	// Assign a name to the player cell
	var allNames = ["Nano", "Blob", "Zeta", "Mito", "Viru", "Giga", "Beta", "Toxi", "Rex", "Lumo", "Fago", "Proto", "Mega", "Pico", "Tera", "Vivo", "Cello", "Dino", "Mobi", "Rondo"];
	playerCell.randomName = playerName && playerName.length > 0 ? playerName : allNames[Math.floor(Math.random() * allNames.length)];
	world.addChild(playerCell);
}
// Generate initial food
function spawnFood() {
	var food = new Food();
	food.x = Math.random() * 22000;
	food.y = Math.random() * 22000;
	foods.push(food);
	world.addChild(food);
}
function spawnPowerFood() {
	var powerFood = new PowerFood();
	powerFood.x = Math.random() * 22000;
	powerFood.y = Math.random() * 22000;
	powerFoods.push(powerFood);
	world.addChild(powerFood);
}
function spawnPapa() {
	var papa = new Papa();
	papa.x = Math.random() * 22000;
	papa.y = Math.random() * 22000;
	papas.push(papa);
	world.addChild(papa);
}
;
// Generate initial predators
function spawnPredator() {
	var predator = new Predator();
	predator.x = Math.random() * 22000;
	predator.y = Math.random() * 22000;
	// Assign a random name to the predator
	var allNames = ["Nano", "Blob", "Zeta", "Mito", "Viru", "Giga", "Beta", "Toxi", "Rex", "Lumo", "Fago", "Proto", "Mega", "Pico", "Tera", "Vivo", "Cello", "Dino", "Mobi", "Rondo"];
	predator.randomName = allNames[Math.floor(Math.random() * allNames.length)];
	predators.push(predator);
	world.addChild(predator);
}
// Generate AI cells
function spawnAICell() {
	var ai = new AICell();
	ai.x = Math.random() * 22000;
	ai.y = Math.random() * 22000;
	// Assign random size: 50, 70, 90, 150, or 300 (removed 1000 to reduce large bots)
	var possibleSizes = [50, 70, 90, 150, 300];
	var sizeIdx = Math.floor(Math.random() * possibleSizes.length);
	ai.size = possibleSizes[sizeIdx];
	// Update scale to match new size
	var scale = ai.size / 50;
	if (ai.children && ai.children.length > 0) {
		var cellGraphics = ai.children[0];
		cellGraphics.scaleX = scale;
		cellGraphics.scaleY = scale;
	}
	// Assign a random name to this AI cell
	var aiNames = ["Nano", "Blob", "Zeta", "Mito", "Viru", "Giga", "Beta", "Toxi", "Rex", "Lumo", "Fago", "Proto", "Mega", "Pico", "Tera", "Vivo", "Cello", "Dino", "Mobi", "Rondo"];
	ai.randomName = aiNames[Math.floor(Math.random() * aiNames.length)];
	// Only some AI cells will hunt the player
	// 90% of AI cells will hunt the player, others will ignore the player (harder)
	ai.huntsPlayer = Math.random() < 0.9;
	// Increase base speed for all AI cells for more challenge
	ai.speed += 1.2;
	aiCells.push(ai);
	world.addChild(ai);
}
// Spawn giant AI cells
function spawnGiantAICell() {
	var ai = new AICell();
	ai.x = Math.random() * 22000;
	ai.y = Math.random() * 22000;
	// Set giant size
	ai.size = 1000;
	// Update scale to match new size
	var scale = ai.size / 50;
	if (ai.children && ai.children.length > 0) {
		var cellGraphics = ai.children[0];
		cellGraphics.scaleX = scale;
		cellGraphics.scaleY = scale;
	}
	// Assign a random name to this AI cell
	var aiNames = ["Nano", "Blob", "Zeta", "Mito", "Viru", "Giga", "Beta", "Toxi", "Rex", "Lumo", "Fago", "Proto", "Mega", "Pico", "Tera", "Vivo", "Cello", "Dino", "Mobi", "Rondo"];
	ai.randomName = aiNames[Math.floor(Math.random() * aiNames.length)];
	// Giant cells always hunt the player
	ai.huntsPlayer = true;
	aiCells.push(ai);
	world.addChild(ai);
}
// Spawn initial food, most near the player, some random
for (var i = 0; i < 80; i++) {
	if (i < 60 && playerCell !== null) {
		// Near player: in a ring 300-900px from player
		var angle = Math.random() * Math.PI * 2;
		var dist = 300 + Math.random() * 600;
		var fx = playerCell.x + Math.cos(angle) * dist;
		var fy = playerCell.y + Math.sin(angle) * dist;
		fx = Math.max(20, Math.min(fx, 22000 - 20));
		fy = Math.max(20, Math.min(fy, 22000 - 20));
		var food = new Food();
		food.x = fx;
		food.y = fy;
		foods.push(food);
		world.addChild(food);
	} else {
		spawnFood();
	}
}
// Spawn initial power food (less common)
for (var i = 0; i < 15; i++) {
	spawnPowerFood();
}
// Spawn initial papas (potato food)
for (var i = 0; i < 10; i++) {
	spawnPapa();
}
// Spawn initial predators
for (var i = 0; i < 5; i++) {
	spawnPredator();
}
// Spawn initial AI cells
for (var i = 0; i < 40; i++) {
	spawnAICell();
}
// Spawn 2-10 giant AI cells
var giantCount = 2 + Math.floor(Math.random() * 9); // Random number between 2 and 10
for (var i = 0; i < giantCount; i++) {
	spawnGiantAICell();
}
// Slither.io style swipe/drag controls
var dragging = false;
var dragTouchId = null;
var lastTouchX = null;
var lastTouchY = null;
var dragStartX = null;
var dragStartY = null;
var dragPlayerStartX = null;
var dragPlayerStartY = null;
game.down = function (x, y, obj) {
	// Start dragging from anywhere except top left 100x100
	if (!(x < 100 && y < 100)) {
		dragging = true;
		dragTouchId = obj && obj.event && obj.event.identifier !== undefined ? obj.event.identifier : null;
		dragStartX = x;
		dragStartY = y;
		if (playerCell !== null) {
			dragPlayerStartX = playerCell.x;
			dragPlayerStartY = playerCell.y;
		} else {
			dragPlayerStartX = 0;
			dragPlayerStartY = 0;
		}
		lastTouchX = x;
		lastTouchY = y;
	}
};
game.move = function (x, y, obj) {
	if (dragging && (dragTouchId === null || obj && obj.event && obj.event.identifier === dragTouchId)) {
		lastTouchX = x;
		lastTouchY = y;
		// Calculate drag vector relative to drag start
		var dx = x - dragStartX;
		var dy = y - dragStartY;
		// Set a max drag distance for control sensitivity
		var maxDrag = 400;
		var dragLen = Math.sqrt(dx * dx + dy * dy);
		if (dragLen > maxDrag) {
			dx = dx * maxDrag / dragLen;
			dy = dy * maxDrag / dragLen;
		}
		// Set the target position for the player cell based on drag
		if (playerCell !== null) {
			playerCell.targetX = dragPlayerStartX + dx * 8;
			playerCell.targetY = dragPlayerStartY + dy * 8;
		}
	}
};
game.up = function (x, y, obj) {
	if (dragging && (dragTouchId === null || obj && obj.event && obj.event.identifier === dragTouchId)) {
		dragging = false;
		dragTouchId = null;
		lastTouchX = null;
		lastTouchY = null;
		dragStartX = null;
		dragStartY = null;
		dragPlayerStartX = null;
		dragPlayerStartY = null;
	}
};
game.update = function () {
	if (!playerCell) {
		return;
	}
	// Camera logic: center world on playerCell, clamp to map bounds (slither.io style)
	var viewWidth = 2048;
	var viewHeight = 2732;
	var mapSize = 22000;
	// Calculate zoom based on player size (larger player = zoomed out more)
	// More zoom out: lower minZoom, faster zoom out curve
	var baseZoom = 1.0;
	var minZoom = 0.12; // Allow even more zoom out for very large cells
	var zoomFactor = baseZoom;
	if (playerCell.size > 50) {
		// Zoom out as player gets bigger, more pronounced for very large cells
		zoomFactor = Math.max(minZoom, baseZoom - (playerCell.size - 50) / 500);
	}
	// Smooth zoom transition
	if (typeof world.lastZoom === "undefined") world.lastZoom = zoomFactor;
	world.lastZoom += (zoomFactor - world.lastZoom) * 0.1;
	// Apply zoom to world
	world.scaleX = world.lastZoom;
	world.scaleY = world.lastZoom;
	// Adjust view calculations for zoom
	var adjustedViewWidth = viewWidth / world.lastZoom;
	var adjustedViewHeight = viewHeight / world.lastZoom;
	// Calculate camera target position to center player
	var camTargetX = playerCell.x - adjustedViewWidth / 2;
	var camTargetY = playerCell.y - adjustedViewHeight / 2;
	// Clamp camera to map bounds
	camTargetX = Math.max(0, Math.min(camTargetX, mapSize - adjustedViewWidth));
	camTargetY = Math.max(0, Math.min(camTargetY, mapSize - adjustedViewHeight));
	// Smooth camera movement (slither.io style)
	if (typeof world.lastCamX === "undefined") world.lastCamX = camTargetX;
	if (typeof world.lastCamY === "undefined") world.lastCamY = camTargetY;
	world.lastCamX += (camTargetX - world.lastCamX) * 0.15;
	world.lastCamY += (camTargetY - world.lastCamY) * 0.15;
	// Move world container
	world.x = -Math.round(world.lastCamX * world.lastZoom);
	world.y = -Math.round(world.lastCamY * world.lastZoom);
	// AI cells update and logic
	for (var i = aiCells.length - 1; i >= 0; i--) {
		var ai = aiCells[i];
		if (!ai.alive) {
			continue;
		}
		ai.update();
		// AI eats food
		for (var j = foods.length - 1; j >= 0; j--) {
			var food = foods[j];
			if (food.consumed) {
				continue;
			}
			var dx = ai.x - food.x;
			var dy = ai.y - food.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < ai.size / 2 + food.size / 2) {
				food.consumed = true;
				food.destroy();
				foods.splice(j, 1);
				ai.grow(100);
				break;
			}
		}
		// AI eats power food
		for (var j = powerFoods.length - 1; j >= 0; j--) {
			var powerFood = powerFoods[j];
			if (powerFood.consumed) {
				continue;
			}
			var dx = ai.x - powerFood.x;
			var dy = ai.y - powerFood.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < ai.size / 2 + powerFood.size / 2) {
				powerFood.consumed = true;
				powerFood.destroy();
				powerFoods.splice(j, 1);
				ai.grow(powerFood.growthValue);
				break;
			}
		}
		// AI eats papas
		for (var j = papas.length - 1; j >= 0; j--) {
			var papa = papas[j];
			if (papa.consumed) {
				continue;
			}
			var dx = ai.x - papa.x;
			var dy = ai.y - papa.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < ai.size / 2 + papa.size / 2) {
				papa.consumed = true;
				papa.destroy();
				papas.splice(j, 1);
				ai.grow(papa.growthValue);
				break;
			}
		}
		// AI eats other AI (io style)
		for (var k = aiCells.length - 1; k >= 0; k--) {
			if (i === k) {
				continue;
			}
			var other = aiCells[k];
			if (!other.alive) {
				continue;
			}
			var dx = ai.x - other.x;
			var dy = ai.y - other.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < ai.size / 2 + other.size / 2) {
				if (ai.size > other.size * 1.2) {
					// Clear hunter if the eaten AI was the current hunter
					if (currentHunter === other) {
						currentHunter = null;
					}
					other.alive = false;
					other.destroy();
					ai.grow(other.size / 2);
					aiCells.splice(k, 1);
					if (k < i) {
						i--;
					} // Adjust index if needed
					break;
				}
			}
		}
		// AI can eat player or be eaten by player
		var dxp = ai.x - playerCell.x;
		var dyp = ai.y - playerCell.y;
		var distp = Math.sqrt(dxp * dxp + dyp * dyp);
		if (distp < ai.size / 2 + playerCell.size / 2) {
			if (ai.size > playerCell.size * 1.2) {
				// Player is eaten by a larger AI cell
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
				return;
			} else if (playerCell.size > ai.size * 1.2) {
				// Player eats smaller AI cell
				// Clear hunter if the eaten AI was the current hunter
				if (currentHunter === ai) {
					currentHunter = null;
				}
				ai.alive = false;
				ai.destroy();
				aiCells.splice(i, 1);
				playerCell.grow(ai.size / 2);
				cellsEaten++;
				LK.getSound('eat').play();
				scoreTxt.setText('Size: ' + Math.floor(playerCell.size) + ' | Eaten: ' + cellsEaten);
				break;
			}
		}
	}
	// Check food collisions for player
	for (var i = foods.length - 1; i >= 0; i--) {
		var food = foods[i];
		if (food.consumed) {
			continue;
		}
		var dx = playerCell.x - food.x;
		var dy = playerCell.y - food.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < playerCell.size / 2 + food.size / 2) {
			// Consume food
			food.consumed = true;
			food.destroy();
			foods.splice(i, 1);
			playerCell.grow(100);
			// Do not increment cellsEaten for food
			LK.getSound('eat').play();
			// Update score display
			scoreTxt.setText('Size: ' + Math.floor(playerCell.size));
		}
	}
	// Check power food collisions for player
	for (var i = powerFoods.length - 1; i >= 0; i--) {
		var powerFood = powerFoods[i];
		if (powerFood.consumed) {
			continue;
		}
		var dx = playerCell.x - powerFood.x;
		var dy = playerCell.y - powerFood.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < playerCell.size / 2 + powerFood.size / 2) {
			// Consume power food
			powerFood.consumed = true;
			powerFood.destroy();
			powerFoods.splice(i, 1);
			playerCell.grow(powerFood.growthValue);
			// Do not increment cellsEaten for power food
			LK.getSound('eat').play();
			// Update score display
			scoreTxt.setText('Size: ' + Math.floor(playerCell.size));
		}
	}
	// Check papa collisions for player
	for (var i = papas.length - 1; i >= 0; i--) {
		var papa = papas[i];
		if (papa.consumed) {
			continue;
		}
		var dx = playerCell.x - papa.x;
		var dy = playerCell.y - papa.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < playerCell.size / 2 + papa.size / 2) {
			// Consume papa
			papa.consumed = true;
			papa.destroy();
			papas.splice(i, 1);
			playerCell.grow(papa.growthValue);
			// Do not increment cellsEaten for papa
			LK.getSound('eat').play();
			// Update score display
			scoreTxt.setText('Size: ' + Math.floor(playerCell.size));
		}
	}
	// Check predator collisions
	for (var i = 0; i < predators.length; i++) {
		var predator = predators[i];
		var dx = playerCell.x - predator.x;
		var dy = playerCell.y - predator.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < playerCell.size / 2 + predator.size / 2) {
			if (predator.size > playerCell.size) {
				// Game over - eaten by predator
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
				return;
			} else if (playerCell.size > predator.size * 1.2) {
				// Player can eat predator
				predator.destroy();
				predators.splice(i, 1);
				playerCell.grow(70);
				cellsEaten++;
				LK.getSound('eat').play();
				scoreTxt.setText('Size: ' + Math.floor(playerCell.size) + ' | Eaten: ' + cellsEaten);
				// Spawn new predator
				spawnPredator();
				i--; // Adjust index after removal
			}
		}
	}
	// Spawn new food periodically, but always near the player
	if (LK.ticks % 120 == 0 && foods.length < 65) {
		// Spawn food in a ring 300-700px from player, random angle
		var angle = Math.random() * Math.PI * 2;
		var dist = 300 + Math.random() * 400;
		var fx = playerCell.x + Math.cos(angle) * dist;
		var fy = playerCell.y + Math.sin(angle) * dist;
		// Clamp to map bounds
		fx = Math.max(20, Math.min(fx, 22000 - 20));
		fy = Math.max(20, Math.min(fy, 22000 - 20));
		var food = new Food();
		food.x = fx;
		food.y = fy;
		foods.push(food);
		world.addChild(food);
	}
	// Spawn power food less frequently
	if (LK.ticks % 300 == 0 && powerFoods.length < 20) {
		// Spawn power food in a ring 400-800px from player, random angle
		var angle = Math.random() * Math.PI * 2;
		var dist = 400 + Math.random() * 400;
		var fx = playerCell.x + Math.cos(angle) * dist;
		var fy = playerCell.y + Math.sin(angle) * dist;
		// Clamp to map bounds
		fx = Math.max(30, Math.min(fx, 22000 - 30));
		fy = Math.max(30, Math.min(fy, 22000 - 30));
		var powerFood = new PowerFood();
		powerFood.x = fx;
		powerFood.y = fy;
		powerFoods.push(powerFood);
		world.addChild(powerFood);
	}
	// Spawn papas periodically
	if (LK.ticks % 200 == 0 && papas.length < 15) {
		// Spawn papa in a ring 350-600px from player, random angle
		var angle = Math.random() * Math.PI * 2;
		var dist = 350 + Math.random() * 250;
		var fx = playerCell.x + Math.cos(angle) * dist;
		var fy = playerCell.y + Math.sin(angle) * dist;
		// Clamp to map bounds
		fx = Math.max(35, Math.min(fx, 22000 - 35));
		fy = Math.max(35, Math.min(fy, 22000 - 35));
		var papa = new Papa();
		papa.x = fx;
		papa.y = fy;
		papas.push(papa);
		world.addChild(papa);
	}
	// Add more predators as player grows (harder: more frequent, higher max)
	if (LK.ticks % 180 == 0 && predators.length < 22) {
		spawnPredator();
	}
	// Add more AI cells as the game progresses (harder: more frequent, higher max)
	if (LK.ticks % 90 == 0 && aiCells.length < 32) {
		spawnAICell();
	}
	// Find the largest cell (player, aiCells, predators)
	var topCell = playerCell;
	var topCellType = "Tú";
	var topCellSize = playerCell ? playerCell.size : 0;
	var topCellName = null;
	// Check AI cells
	for (var i = 0; i < aiCells.length; i++) {
		if (aiCells[i].alive && aiCells[i].size > topCellSize) {
			topCell = aiCells[i];
			topCellType = "Bot";
			topCellSize = aiCells[i].size;
			topCellName = aiCells[i].randomName;
		}
	}
	// Check predators
	for (var i = 0; i < predators.length; i++) {
		if (predators[i].size > topCellSize) {
			topCell = predators[i];
			topCellType = "Depredador";
			topCellSize = predators[i].size;
			topCellName = null;
		}
	}
	// Show #1 score
	if (topCell === playerCell) {
		topScoreTxt.setText("#1: Tú (" + Math.floor(topCellSize) + ")");
	} else if (topCellType === "Bot" && topCellName) {
		topScoreTxt.setText("#1: " + topCellName + " (" + Math.floor(topCellSize) + ")");
	} else {
		topScoreTxt.setText("#1: " + topCellType + " (" + Math.floor(topCellSize) + ")");
	}
	// No win condition: game continues infinitely even if player is #1
};

===================================================================
--- original.js
+++ change.js
@@ -216,9 +216,9 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.size = 80;
-	self.speed = 1;
+	self.speed = 2.2; // Increased base speed for more challenge
 	self.targetX = Math.random() * 8192;
 	self.targetY = Math.random() * 8192;
 	self.update = function () {
 		// Move towards target
@@ -519,10 +519,12 @@
 	// Assign a random name to this AI cell
 	var aiNames = ["Nano", "Blob", "Zeta", "Mito", "Viru", "Giga", "Beta", "Toxi", "Rex", "Lumo", "Fago", "Proto", "Mega", "Pico", "Tera", "Vivo", "Cello", "Dino", "Mobi", "Rondo"];
 	ai.randomName = aiNames[Math.floor(Math.random() * aiNames.length)];
 	// Only some AI cells will hunt the player
-	// 70% of AI cells will hunt the player, others will ignore the player (harder)
-	ai.huntsPlayer = Math.random() < 0.7;
+	// 90% of AI cells will hunt the player, others will ignore the player (harder)
+	ai.huntsPlayer = Math.random() < 0.9;
+	// Increase base speed for all AI cells for more challenge
+	ai.speed += 1.2;
 	aiCells.push(ai);
 	world.addChild(ai);
 }
 // Spawn giant AI cells
@@ -938,13 +940,13 @@
 		papas.push(papa);
 		world.addChild(papa);
 	}
 	// Add more predators as player grows (harder: more frequent, higher max)
-	if (LK.ticks % 360 == 0 && predators.length < 14) {
+	if (LK.ticks % 180 == 0 && predators.length < 22) {
 		spawnPredator();
 	}
 	// Add more AI cells as the game progresses (harder: more frequent, higher max)
-	if (LK.ticks % 180 == 0 && aiCells.length < 18) {
+	if (LK.ticks % 90 == 0 && aiCells.length < 32) {
 		spawnAICell();
 	}
 	// Find the largest cell (player, aiCells, predators)
 	var topCell = playerCell;