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

/**** 
* Classes
****/ 
var Heart = Container.expand(function () {
	var self = Container.call(this);
	var heartGraphic = self.attachAsset('heart', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var Word = Container.expand(function () {
	var self = Container.call(this);
	// Create word bubble background
	var bubble = self.attachAsset('wordBubble', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Create text for the word
	self.wordText = new Text2('', {
		size: 48,
		fill: 0xFFFFFF
	});
	self.wordText.anchor.set(0.5, 0.5);
	self.addChild(self.wordText);
	// Word properties
	self.fallSpeed = 2;
	self.word = '';
	self.missed = false;
	// Set the word text
	self.setWord = function (word) {
		self.word = word;
		self.wordText.setText(word);
	};
	// Update method called every frame
	self.update = function () {
		self.y += self.fallSpeed;
	};
	// Touch handler
	self.down = function (x, y, obj) {
		if (!self.missed) {
			// Word was touched correctly
			LK.setScore(LK.getScore() + 10);
			scoreText.setText(LK.getScore());
			// Visual effect
			LK.effects.flashObject(self, 0xFFEB3B, 300);
			tween(self, {
				scaleX: 1.5,
				scaleY: 1.5,
				alpha: 0
			}, {
				duration: 300,
				onFinish: function onFinish() {
					self.destroy();
				}
			});
			// Play sound
			LK.getSound('correctWord').play();
			// Remove from words array
			for (var i = words.length - 1; i >= 0; i--) {
				if (words[i] === self) {
					words.splice(i, 1);
					break;
				}
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1976D2
});

/**** 
* Game Code
****/ 
// Game variables
var words = [];
var lives = 3;
var hearts = [];
var currentSpeed = 2;
var wordSpawnTimer = 0;
var spawnInterval = 120; // Spawn every 2 seconds at 60 FPS
var backgroundColors = [0x1976D2, 0x7B1FA2, 0xD32F2F, 0xF57C00, 0x388E3C, 0x1976D2];
var currentColorIndex = 0;
var lastSpeedLevel = 0;
// Spanish words by category
var wordCategories = {
	animales: ['gato', 'perro', 'pájaro', 'pez', 'león', 'tigre', 'oso', 'ratón'],
	colores: ['rojo', 'azul', 'verde', 'amarillo', 'naranja', 'morado', 'rosa', 'negro'],
	comida: ['manzana', 'pan', 'agua', 'leche', 'queso', 'pollo', 'arroz', 'pasta'],
	objetos: ['mesa', 'silla', 'libro', 'lápiz', 'coche', 'casa', 'puerta', 'ventana']
};
// Flatten all words into one array
var allWords = [];
for (var category in wordCategories) {
	allWords = allWords.concat(wordCategories[category]);
}
// Score display
var scoreText = new Text2('0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
scoreText.y = 50;
// Lives display
for (var i = 0; i < 3; i++) {
	var heart = new Heart();
	heart.x = 150 + i * 60;
	heart.y = 50;
	hearts.push(heart);
	LK.gui.topRight.addChild(heart);
}
// Function to spawn a new word
function spawnWord() {
	var word = new Word();
	var randomWord = allWords[Math.floor(Math.random() * allWords.length)];
	word.setWord(randomWord);
	// Random horizontal position
	word.x = Math.random() * (2048 - 300) + 150;
	word.y = -100;
	word.fallSpeed = currentSpeed;
	words.push(word);
	game.addChild(word);
}
// Function to lose a life
function loseLife() {
	lives--;
	if (lives >= 0 && lives < hearts.length) {
		hearts[lives].alpha = 0.3;
	}
	if (lives <= 0) {
		LK.showGameOver();
	}
	// Play wrong sound
	LK.getSound('wrongWord').play();
	// Flash screen red
	LK.effects.flashScreen(0xFF1744, 500);
}
// Game update loop
game.update = function () {
	// Spawn new words
	wordSpawnTimer++;
	if (wordSpawnTimer >= spawnInterval) {
		spawnWord();
		wordSpawnTimer = 0;
	}
	// Update and check words
	for (var i = words.length - 1; i >= 0; i--) {
		var word = words[i];
		// Check if word reached bottom
		if (word.y > 2732 + 50) {
			if (!word.missed) {
				word.missed = true;
				loseLife();
			}
			word.destroy();
			words.splice(i, 1);
		}
	}
	// Increase speed every 20 points
	var speedLevel = Math.floor(LK.getScore() / 20);
	currentSpeed = 2 + speedLevel * 0.5;
	// Decrease spawn interval slightly as speed increases
	spawnInterval = Math.max(60, 120 - speedLevel * 5);
	// Change background color when speed level increases
	if (speedLevel !== lastSpeedLevel) {
		currentColorIndex = speedLevel % backgroundColors.length;
		var targetColor = backgroundColors[currentColorIndex];
		// Simple immediate color change - tween doesn't work well with color interpolation in this context
		game.setBackgroundColor(targetColor);
		lastSpeedLevel = speedLevel;
	}
};
// Initialize score
scoreText.setText(LK.getScore());
// Play background music
LK.playMusic('backgroundMusic');

===================================================================
--- original.js
+++ change.js
@@ -176,48 +176,10 @@
 	// Change background color when speed level increases
 	if (speedLevel !== lastSpeedLevel) {
 		currentColorIndex = speedLevel % backgroundColors.length;
 		var targetColor = backgroundColors[currentColorIndex];
-		// Create a smooth color transition using tween
-		var currentBg = {
-			color: game.backgroundColor
-		};
-		tween(currentBg, {
-			color: targetColor
-		}, {
-			duration: 1000,
-			easing: tween.easeInOut,
-			onFinish: function onFinish() {
-				game.setBackgroundColor(targetColor);
-			}
-		});
-		// Update game background during transition
-		var startColor = game.backgroundColor;
-		var colorTransition = function colorTransition(progress) {
-			var r1 = startColor >> 16 & 0xFF;
-			var g1 = startColor >> 8 & 0xFF;
-			var b1 = startColor & 0xFF;
-			var r2 = targetColor >> 16 & 0xFF;
-			var g2 = targetColor >> 8 & 0xFF;
-			var b2 = targetColor & 0xFF;
-			var r = Math.floor(r1 + (r2 - r1) * progress);
-			var g = Math.floor(g1 + (g2 - g1) * progress);
-			var b = Math.floor(b1 + (b2 - b1) * progress);
-			return r << 16 | g << 8 | b;
-		};
-		// Animate color transition over time
-		var transitionStart = LK.ticks;
-		var transitionDuration = 60; // 1 second at 60 FPS
-		var colorTimer = LK.setInterval(function () {
-			var elapsed = LK.ticks - transitionStart;
-			var progress = Math.min(elapsed / transitionDuration, 1);
-			if (progress >= 1) {
-				game.setBackgroundColor(targetColor);
-				LK.clearInterval(colorTimer);
-			} else {
-				game.setBackgroundColor(colorTransition(progress));
-			}
-		}, 16); // ~60 FPS
+		// Simple immediate color change - tween doesn't work well with color interpolation in this context
+		game.setBackgroundColor(targetColor);
 		lastSpeedLevel = speedLevel;
 	}
 };
 // Initialize score