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

/**** 
* Classes
****/ 
// Catcher class (player character)
var Catcher = Container.expand(function () {
	var self = Container.call(this);
	var catcherAsset = self.attachAsset('catcher', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Optionally, add a face or smile with another shape or text (not required for MVP)
	// No update needed; position is set by player input
	return self;
});
// Ground class (for missed detection)
var Ground = Container.expand(function () {
	var self = Container.call(this);
	var groundAsset = self.attachAsset('ground', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
// Papilla class (falling object)
var Papilla = Container.expand(function () {
	var self = Container.call(this);
	var papillaAsset = self.attachAsset('papilla', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Falling speed (pixels per frame)
	self.speed = 8;
	// Used for tracking if already counted as missed/caught
	self.caught = false;
	// Called every tick
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x00b140 // Green background
});

/**** 
* Game Code
****/ 
// Music (optional, will not play by default)
// Sound for miss
// Sound for catching
// Ground - box, brown
// Character - box, blue
// Papilla (baby food jar) - ellipse, yellow
/**** 
* Papilla Catcher - Source Code
****/ 
// Game constants
var GAME_WIDTH = 2048;
var GAME_HEIGHT = 2732;
var GROUND_HEIGHT = 40;
var MAX_MISSES = 3;
// Difficulty settings
var DIFFICULTY_SETTINGS = [{
	name: "Fácil",
	spawnInterval: 70,
	papillaSpeed: 7
}, {
	name: "Normal",
	spawnInterval: 48,
	papillaSpeed: 10
}, {
	name: "Difícil",
	spawnInterval: 28,
	papillaSpeed: 16
}];
var selectedDifficulty = null;
// Game state
var papillas = [];
var score = 0;
var misses = 0;
var spawnInterval = 60; // Frames between spawns (will decrease)
var papillaSpeed = 8; // Initial speed (will increase)
var lastSpawnTick = 0;
var isDragging = false;
var dragOffsetX = 0;
// --- Difficulty Menu UI ---
var menuContainer = new Container();
menuContainer.x = GAME_WIDTH / 2;
menuContainer.y = GAME_HEIGHT / 2;
game.addChild(menuContainer);
var menuTitle = new Text2("Elige dificultad", {
	size: 160,
	fill: 0x00B140
});
menuTitle.anchor.set(0.5, 1);
menuTitle.y = -220;
menuContainer.addChild(menuTitle);
var menuButtons = [];
var buttonHeight = 200;
var buttonSpacing = 60;
for (var i = 0; i < DIFFICULTY_SETTINGS.length; i++) {
	var btn = new Container();
	btn.y = i * (buttonHeight + buttonSpacing);
	var btnBg = LK.getAsset('ground', {
		width: 700,
		height: buttonHeight,
		color: 0x00b140,
		anchorX: 0.5,
		anchorY: 0.5
	});
	btn.addChild(btnBg);
	var btnText = new Text2(DIFFICULTY_SETTINGS[i].name, {
		size: 110,
		fill: "#fff"
	});
	btnText.anchor.set(0.5, 0.5);
	btnText.y = 0;
	btn.addChild(btnText);
	// Touch event
	(function (idx) {
		btn.down = function (x, y, obj) {
			selectDifficulty(idx);
		};
	})(i);
	menuContainer.addChild(btn);
	menuButtons.push(btn);
}
for (var i = 0; i < menuButtons.length; i++) {
	menuButtons[i].x = 0;
	menuButtons[i].y = i * (buttonHeight + buttonSpacing) + 60;
}
// Hide game elements until difficulty is chosen
var ground, catcher, scoreTxt, missesTxt;
function setupGameElements() {
	// Create ground at bottom
	ground = new Ground();
	ground.x = GAME_WIDTH / 2;
	ground.y = GAME_HEIGHT - GROUND_HEIGHT / 2;
	game.addChild(ground);
	// Create catcher (player)
	catcher = new Catcher();
	catcher.x = GAME_WIDTH / 2;
	catcher.y = GAME_HEIGHT - GROUND_HEIGHT - catcher.height / 2 - 10;
	game.addChild(catcher);
	// Score display
	scoreTxt = new Text2('0', {
		size: 120,
		fill: 0x222222
	});
	scoreTxt.anchor.set(0.5, 0);
	LK.gui.top.addChild(scoreTxt);
	// Misses display (hearts or Xs)
	missesTxt = new Text2('', {
		size: 90,
		fill: 0xD83318
	});
	missesTxt.anchor.set(0.5, 0);
	LK.gui.top.addChild(missesTxt);
	missesTxt.y = 120; // Place below score
	updateScoreDisplay();
}
function updateScoreDisplay() {
	if (!scoreTxt || !missesTxt) return;
	scoreTxt.setText(score);
	// Show misses as X X X
	var missStr = '';
	for (var i = 0; i < MAX_MISSES; i++) {
		missStr += i < misses ? '✖ ' : '○ ';
	}
	missesTxt.setText(missStr);
}
// Called when a difficulty is selected
function selectDifficulty(idx) {
	selectedDifficulty = idx;
	// Set initial values based on difficulty
	spawnInterval = DIFFICULTY_SETTINGS[idx].spawnInterval;
	papillaSpeed = DIFFICULTY_SETTINGS[idx].papillaSpeed;
	// Remove menu
	menuContainer.visible = false;
	// Setup game elements
	setupGameElements();
}
// Touch/move controls
function clamp(val, min, max) {
	return Math.max(min, Math.min(max, val));
}
// Only allow horizontal movement
function handleMove(x, y, obj) {
	if (selectedDifficulty === null) return;
	if (isDragging) {
		// Clamp catcher within screen
		var halfWidth = catcher.width / 2;
		catcher.x = clamp(x - dragOffsetX, halfWidth, GAME_WIDTH - halfWidth);
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	if (selectedDifficulty === null) return;
	// Only start drag if touch is on or near the catcher
	var local = catcher.toLocal(game.toGlobal({
		x: x,
		y: y
	}));
	if (local.x >= -catcher.width / 2 && local.x <= catcher.width / 2 && local.y >= -catcher.height / 2 && local.y <= catcher.height / 2) {
		isDragging = true;
		dragOffsetX = x - catcher.x;
		handleMove(x, y, obj);
	}
};
game.up = function (x, y, obj) {
	if (selectedDifficulty === null) return;
	isDragging = false;
};
// Papilla spawn logic
function spawnPapilla() {
	var papilla = new Papilla();
	// Random X, avoid spawning at extreme edges
	var margin = 100 + papilla.width / 2;
	papilla.x = margin + Math.random() * (GAME_WIDTH - 2 * margin);
	papilla.y = 0 - papilla.height / 2;
	papilla.speed = papillaSpeed;
	papillas.push(papilla);
	game.addChild(papilla);
}
// Main game update loop
game.update = function () {
	// Block game logic until difficulty is selected
	if (selectedDifficulty === null) {
		return;
	}
	// Increase difficulty as score rises (relative to base difficulty)
	if (score < 10) {
		spawnInterval = DIFFICULTY_SETTINGS[selectedDifficulty].spawnInterval;
		papillaSpeed = DIFFICULTY_SETTINGS[selectedDifficulty].papillaSpeed;
	} else if (score < 20) {
		spawnInterval = Math.max(22, DIFFICULTY_SETTINGS[selectedDifficulty].spawnInterval - 12);
		papillaSpeed = DIFFICULTY_SETTINGS[selectedDifficulty].papillaSpeed + 2;
	} else if (score < 35) {
		spawnInterval = Math.max(18, DIFFICULTY_SETTINGS[selectedDifficulty].spawnInterval - 22);
		papillaSpeed = DIFFICULTY_SETTINGS[selectedDifficulty].papillaSpeed + 5;
	} else if (score < 50) {
		spawnInterval = Math.max(14, DIFFICULTY_SETTINGS[selectedDifficulty].spawnInterval - 30);
		papillaSpeed = DIFFICULTY_SETTINGS[selectedDifficulty].papillaSpeed + 8;
	} else {
		spawnInterval = Math.max(10, DIFFICULTY_SETTINGS[selectedDifficulty].spawnInterval - 36);
		papillaSpeed = DIFFICULTY_SETTINGS[selectedDifficulty].papillaSpeed + 12;
	}
	// Spawn new papilla
	if (LK.ticks - lastSpawnTick >= spawnInterval) {
		spawnPapilla();
		lastSpawnTick = LK.ticks;
	}
	// Update papillas
	for (var i = papillas.length - 1; i >= 0; i--) {
		var p = papillas[i];
		p.update();
		// Check for catch (intersect with catcher)
		if (!p.caught && p.intersects(catcher)) {
			p.caught = true;
			score += 1;
			updateScoreDisplay();
			LK.getSound('catch').play();
			// Animate papilla (shrink and fade)
			tween(p, {
				scaleX: 0,
				scaleY: 0,
				alpha: 0
			}, {
				duration: 250,
				easing: tween.easeIn,
				onFinish: function onFinish() {}
			});
			// Remove after animation
			LK.setTimeout(function (papillaRef, idx) {
				if (papillaRef && papillas.indexOf(papillaRef) !== -1) {
					papillaRef.destroy();
					papillas.splice(papillas.indexOf(papillaRef), 1);
				}
			}, 260, p, i);
			continue;
		}
		// Check for miss (intersect with ground or off screen)
		if (!p.caught && p.y + p.height / 2 >= ground.y - GROUND_HEIGHT / 2) {
			p.caught = true;
			misses += 1;
			updateScoreDisplay();
			LK.getSound('miss').play();
			// Flash screen red
			LK.effects.flashScreen(0xff0000, 400);
			// Animate papilla (fall and fade)
			tween(p, {
				alpha: 0,
				y: ground.y + 80
			}, {
				duration: 300,
				easing: tween.easeIn,
				onFinish: function onFinish() {}
			});
			LK.setTimeout(function (papillaRef, idx) {
				if (papillaRef && papillas.indexOf(papillaRef) !== -1) {
					papillaRef.destroy();
					papillas.splice(papillas.indexOf(papillaRef), 1);
				}
			}, 320, p, i);
			// Game over if too many misses
			if (misses >= MAX_MISSES) {
				LK.setTimeout(function () {
					LK.showGameOver();
				}, 400);
			}
			continue;
		}
		// Remove papilla if far off screen (failsafe)
		if (p.y > GAME_HEIGHT + 200) {
			p.destroy();
			papillas.splice(i, 1);
		}
	}
};
// Optionally, play background music (commented out for MVP)
// LK.playMusic('bgmusic', {fade: {start: 0, end: 1, duration: 1000}});

===================================================================
--- original.js
+++ change.js
@@ -67,8 +67,23 @@
 var GAME_WIDTH = 2048;
 var GAME_HEIGHT = 2732;
 var GROUND_HEIGHT = 40;
 var MAX_MISSES = 3;
+// Difficulty settings
+var DIFFICULTY_SETTINGS = [{
+	name: "Fácil",
+	spawnInterval: 70,
+	papillaSpeed: 7
+}, {
+	name: "Normal",
+	spawnInterval: 48,
+	papillaSpeed: 10
+}, {
+	name: "Difícil",
+	spawnInterval: 28,
+	papillaSpeed: 16
+}];
+var selectedDifficulty = null;
 // Game state
 var papillas = [];
 var score = 0;
 var misses = 0;
@@ -76,57 +91,121 @@
 var papillaSpeed = 8; // Initial speed (will increase)
 var lastSpawnTick = 0;
 var isDragging = false;
 var dragOffsetX = 0;
-// Create ground at bottom
-var ground = new Ground();
-ground.x = GAME_WIDTH / 2;
-ground.y = GAME_HEIGHT - GROUND_HEIGHT / 2;
-game.addChild(ground);
-// Create catcher (player)
-var catcher = new Catcher();
-catcher.x = GAME_WIDTH / 2;
-catcher.y = GAME_HEIGHT - GROUND_HEIGHT - catcher.height / 2 - 10;
-game.addChild(catcher);
-// Score display
-var scoreTxt = new Text2('0', {
-	size: 120,
-	fill: 0x222222
+// --- Difficulty Menu UI ---
+var menuContainer = new Container();
+menuContainer.x = GAME_WIDTH / 2;
+menuContainer.y = GAME_HEIGHT / 2;
+game.addChild(menuContainer);
+var menuTitle = new Text2("Elige dificultad", {
+	size: 160,
+	fill: 0x00B140
 });
-scoreTxt.anchor.set(0.5, 0);
-LK.gui.top.addChild(scoreTxt);
-// Misses display (hearts or Xs)
-var missesTxt = new Text2('', {
-	size: 90,
-	fill: 0xD83318
-});
-missesTxt.anchor.set(0.5, 0);
-LK.gui.top.addChild(missesTxt);
-missesTxt.y = 120; // Place below score
+menuTitle.anchor.set(0.5, 1);
+menuTitle.y = -220;
+menuContainer.addChild(menuTitle);
+var menuButtons = [];
+var buttonHeight = 200;
+var buttonSpacing = 60;
+for (var i = 0; i < DIFFICULTY_SETTINGS.length; i++) {
+	var btn = new Container();
+	btn.y = i * (buttonHeight + buttonSpacing);
+	var btnBg = LK.getAsset('ground', {
+		width: 700,
+		height: buttonHeight,
+		color: 0x00b140,
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	btn.addChild(btnBg);
+	var btnText = new Text2(DIFFICULTY_SETTINGS[i].name, {
+		size: 110,
+		fill: "#fff"
+	});
+	btnText.anchor.set(0.5, 0.5);
+	btnText.y = 0;
+	btn.addChild(btnText);
+	// Touch event
+	(function (idx) {
+		btn.down = function (x, y, obj) {
+			selectDifficulty(idx);
+		};
+	})(i);
+	menuContainer.addChild(btn);
+	menuButtons.push(btn);
+}
+for (var i = 0; i < menuButtons.length; i++) {
+	menuButtons[i].x = 0;
+	menuButtons[i].y = i * (buttonHeight + buttonSpacing) + 60;
+}
+// Hide game elements until difficulty is chosen
+var ground, catcher, scoreTxt, missesTxt;
+function setupGameElements() {
+	// Create ground at bottom
+	ground = new Ground();
+	ground.x = GAME_WIDTH / 2;
+	ground.y = GAME_HEIGHT - GROUND_HEIGHT / 2;
+	game.addChild(ground);
+	// Create catcher (player)
+	catcher = new Catcher();
+	catcher.x = GAME_WIDTH / 2;
+	catcher.y = GAME_HEIGHT - GROUND_HEIGHT - catcher.height / 2 - 10;
+	game.addChild(catcher);
+	// Score display
+	scoreTxt = new Text2('0', {
+		size: 120,
+		fill: 0x222222
+	});
+	scoreTxt.anchor.set(0.5, 0);
+	LK.gui.top.addChild(scoreTxt);
+	// Misses display (hearts or Xs)
+	missesTxt = new Text2('', {
+		size: 90,
+		fill: 0xD83318
+	});
+	missesTxt.anchor.set(0.5, 0);
+	LK.gui.top.addChild(missesTxt);
+	missesTxt.y = 120; // Place below score
+	updateScoreDisplay();
+}
 function updateScoreDisplay() {
+	if (!scoreTxt || !missesTxt) return;
 	scoreTxt.setText(score);
 	// Show misses as X X X
 	var missStr = '';
 	for (var i = 0; i < MAX_MISSES; i++) {
 		missStr += i < misses ? '✖ ' : '○ ';
 	}
 	missesTxt.setText(missStr);
 }
-updateScoreDisplay();
+// Called when a difficulty is selected
+function selectDifficulty(idx) {
+	selectedDifficulty = idx;
+	// Set initial values based on difficulty
+	spawnInterval = DIFFICULTY_SETTINGS[idx].spawnInterval;
+	papillaSpeed = DIFFICULTY_SETTINGS[idx].papillaSpeed;
+	// Remove menu
+	menuContainer.visible = false;
+	// Setup game elements
+	setupGameElements();
+}
 // Touch/move controls
 function clamp(val, min, max) {
 	return Math.max(min, Math.min(max, val));
 }
 // Only allow horizontal movement
 function handleMove(x, y, obj) {
+	if (selectedDifficulty === null) return;
 	if (isDragging) {
 		// Clamp catcher within screen
 		var halfWidth = catcher.width / 2;
 		catcher.x = clamp(x - dragOffsetX, halfWidth, GAME_WIDTH - halfWidth);
 	}
 }
 game.move = handleMove;
 game.down = function (x, y, obj) {
+	if (selectedDifficulty === null) return;
 	// Only start drag if touch is on or near the catcher
 	var local = catcher.toLocal(game.toGlobal({
 		x: x,
 		y: y
@@ -137,8 +216,9 @@
 		handleMove(x, y, obj);
 	}
 };
 game.up = function (x, y, obj) {
+	if (selectedDifficulty === null) return;
 	isDragging = false;
 };
 // Papilla spawn logic
 function spawnPapilla() {
@@ -152,24 +232,28 @@
 	game.addChild(papilla);
 }
 // Main game update loop
 game.update = function () {
-	// Increase difficulty as score rises
+	// Block game logic until difficulty is selected
+	if (selectedDifficulty === null) {
+		return;
+	}
+	// Increase difficulty as score rises (relative to base difficulty)
 	if (score < 10) {
-		spawnInterval = 60;
-		papillaSpeed = 8;
+		spawnInterval = DIFFICULTY_SETTINGS[selectedDifficulty].spawnInterval;
+		papillaSpeed = DIFFICULTY_SETTINGS[selectedDifficulty].papillaSpeed;
 	} else if (score < 20) {
-		spawnInterval = 48;
-		papillaSpeed = 10;
+		spawnInterval = Math.max(22, DIFFICULTY_SETTINGS[selectedDifficulty].spawnInterval - 12);
+		papillaSpeed = DIFFICULTY_SETTINGS[selectedDifficulty].papillaSpeed + 2;
 	} else if (score < 35) {
-		spawnInterval = 36;
-		papillaSpeed = 13;
+		spawnInterval = Math.max(18, DIFFICULTY_SETTINGS[selectedDifficulty].spawnInterval - 22);
+		papillaSpeed = DIFFICULTY_SETTINGS[selectedDifficulty].papillaSpeed + 5;
 	} else if (score < 50) {
-		spawnInterval = 28;
-		papillaSpeed = 16;
+		spawnInterval = Math.max(14, DIFFICULTY_SETTINGS[selectedDifficulty].spawnInterval - 30);
+		papillaSpeed = DIFFICULTY_SETTINGS[selectedDifficulty].papillaSpeed + 8;
 	} else {
-		spawnInterval = 22;
-		papillaSpeed = 20;
+		spawnInterval = Math.max(10, DIFFICULTY_SETTINGS[selectedDifficulty].spawnInterval - 36);
+		papillaSpeed = DIFFICULTY_SETTINGS[selectedDifficulty].papillaSpeed + 12;
 	}
 	// Spawn new papilla
 	if (LK.ticks - lastSpawnTick >= spawnInterval) {
 		spawnPapilla();