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

/**** 
* Classes
****/ 
var Fruit = Container.expand(function () {
	var self = Container.call(this);
	self.fruitType = 0;
	self.velocity = {
		x: 0,
		y: 0
	};
	self.isMoving = false;
	self.mergeCount = 0;
	var fruitAssets = ['cherry', 'strawberry', 'orange', 'lemon', 'peach', 'apple', 'pineapple', 'coconut', 'pomegranate', 'melon', 'watermelon'];
	self.initialize = function (fruitType) {
		self.fruitType = fruitType;
		var assetId = fruitAssets[fruitType];
		var graphics = self.attachAsset(assetId, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		self.width = graphics.width;
		self.height = graphics.height;
		self.velocity = {
			x: 0,
			y: 0
		};
		self.isMoving = false;
		self.mergeCount = 0;
	};
	self.applyPhysics = function () {
		self.velocity.y += 0.5;
		if (self.velocity.y > 20) {
			self.velocity.y = 20;
		}
		self.x += self.velocity.x;
		self.y += self.velocity.y;
		self.velocity.x *= 0.98;
		if (self.x - self.width / 2 < 200) {
			self.x = 200 + self.width / 2;
			self.velocity.x *= -0.6;
		}
		if (self.x + self.width / 2 > 1848) {
			self.x = 1848 - self.width / 2;
			self.velocity.x *= -0.6;
		}
		if (self.y + self.height / 2 > 2600) {
			self.y = 2600 - self.height / 2;
			self.velocity.y *= -0.6;
			self.velocity.y = Math.max(self.velocity.y, -2);
		}
		if (Math.abs(self.velocity.y) < 0.5 && Math.abs(self.velocity.x) < 0.5) {
			self.isMoving = false;
		} else {
			self.isMoving = true;
		}
	};
	self.update = function () {
		if (self.isMoving) {
			self.applyPhysics();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0xFAF8F3
});

/**** 
* Game Code
****/ 
var fruits = [];
var nextFruitType = 0;
var score = 0;
var deadzoneTimer = 0;
var gameOver = false;
var draggedFruit = null;
var dragOffsetX = 0;
var combo = 0;
var comboTimeout = null;
var containerLeft = 200;
var containerRight = 1848;
var containerTop = 200;
var containerBottom = 2600;
var deadzoneTop = 150;
var deadzoneBottom = 230;
var fruitData = [{
	name: 'Cherry',
	color: 0xDC143C,
	size: 80
}, {
	name: 'Strawberry',
	color: 0xFF1744,
	size: 95
}, {
	name: 'Orange',
	color: 0xFF8C00,
	size: 110
}, {
	name: 'Lemon',
	color: 0xFFD700,
	size: 125
}, {
	name: 'Peach',
	color: 0xFFB347,
	size: 140
}, {
	name: 'Apple',
	color: 0xE53935,
	size: 155
}, {
	name: 'Pineapple',
	color: 0xFDD835,
	size: 170
}, {
	name: 'Coconut',
	color: 0x8B7355,
	size: 185
}, {
	name: 'Pomegranate',
	color: 0xC41E3A,
	size: 200
}, {
	name: 'Melon',
	color: 0xA4DE6C,
	size: 215
}, {
	name: 'Watermelon',
	color: 0x228B22,
	size: 230
}];
function getRandomFruit() {
	var maxFruit = Math.min(4, 11);
	return Math.floor(Math.random() * maxFruit);
}
function createFruit(type) {
	var newFruit = new Fruit();
	newFruit.initialize(type);
	newFruit.x = 1024;
	newFruit.y = containerTop + 50;
	newFruit.velocity = {
		x: 0,
		y: 0
	};
	newFruit.isMoving = true;
	newFruit.lastWasIntersecting = false;
	game.addChild(newFruit);
	fruits.push(newFruit);
	return newFruit;
}
function mergeFruits(fruit1, fruit2) {
	if (fruit1.fruitType !== fruit2.fruitType || fruit1.fruitType >= 10) {
		return;
	}
	var mergeType = fruit1.fruitType + 1;
	var mergeX = (fruit1.x + fruit2.x) / 2;
	var mergeY = (fruit1.y + fruit2.y) / 2;
	var fruit1Index = fruits.indexOf(fruit1);
	var fruit2Index = fruits.indexOf(fruit2);
	if (fruit1Index > -1) {
		fruit1.destroy();
		fruits.splice(fruit1Index, 1);
	}
	if (fruit2Index > -1) {
		fruit2.destroy();
		fruits.splice(fruit2Index, 1);
	}
	var newFruit = createFruit(mergeType);
	newFruit.x = mergeX;
	newFruit.y = mergeY;
	newFruit.velocity = {
		x: 0,
		y: 0
	};
	newFruit.isMoving = true;
	newFruit.mergeCount = Math.max(fruit1.mergeCount, fruit2.mergeCount) + 1;
	LK.getSound('merge').play();
	var points = (mergeType + 1) * 10 * (combo + 1);
	score += points;
	combo++;
	if (comboTimeout) {
		LK.clearTimeout(comboTimeout);
	}
	comboTimeout = LK.setTimeout(function () {
		combo = 0;
	}, 1000);
	scoreTxt.setText(score);
	if (mergeType === 10) {
		LK.showYouWin();
	}
}
function checkCollisionsAndMerges() {
	for (var i = 0; i < fruits.length; i++) {
		for (var j = i + 1; j < fruits.length; j++) {
			var f1 = fruits[i];
			var f2 = fruits[j];
			if (f1 && f2) {
				var dx = f1.x - f2.x;
				var dy = f1.y - f2.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				var minDistance = (f1.width + f2.width) / 2;
				var isIntersecting = distance < minDistance * 0.9 && f1.fruitType === f2.fruitType;
				if (f1.lastWasIntersecting === undefined) f1.lastWasIntersecting = false;
				if (f2.lastWasIntersecting === undefined) f2.lastWasIntersecting = false;
				if (!f1.lastWasIntersecting && isIntersecting && !f2.isMoving && !f1.isMoving) {
					mergeFruits(f1, f2);
					return true;
				}
				f1.lastWasIntersecting = isIntersecting;
				f2.lastWasIntersecting = isIntersecting;
			}
		}
	}
	return false;
}
function updateDeadzone() {
	var fruitsInDeadzone = 0;
	for (var i = 0; i < fruits.length; i++) {
		if (fruits[i].y - fruits[i].height / 2 < deadzoneBottom) {
			fruitsInDeadzone++;
		}
	}
	if (fruitsInDeadzone > 0) {
		deadzoneTimer++;
		if (deadzoneTimer > 180) {
			gameOver = true;
			LK.getSound('gameover').play();
			LK.showGameOver();
		}
	} else {
		deadzoneTimer = 0;
	}
}
var scoreTxt = new Text2('0', {
	size: 100,
	fill: '#333333'
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Fruit progression display
var progressionContainer = new Container();
var progressionTitle = new Text2('Fruit Evolution Chain', {
	size: 40,
	fill: '#333333'
});
progressionTitle.anchor.set(0.5, 0);
progressionTitle.x = 1024;
progressionTitle.y = 50;
progressionContainer.addChild(progressionTitle);
// Display fruit progression in rows
var fruitDisplayWidth = 150;
var fruitDisplayHeight = 80;
var fruitsPerRow = 6;
var progressionStartY = 150;
var progressionStartX = 200;
for (var fIdx = 0; fIdx < fruitData.length; fIdx++) {
	var row = Math.floor(fIdx / fruitsPerRow);
	var col = fIdx % fruitsPerRow;
	var displayX = progressionStartX + col * fruitDisplayWidth + 60;
	var displayY = progressionStartY + row * fruitDisplayHeight + 40;
	var fruitLabel = new Text2(fIdx + 1 + '. ' + fruitData[fIdx].name, {
		size: 32,
		fill: '#666666'
	});
	fruitLabel.anchor.set(0.5, 0.5);
	fruitLabel.x = displayX;
	fruitLabel.y = displayY;
	progressionContainer.addChild(fruitLabel);
}
game.addChild(progressionContainer);
var nextFruitTxt = new Text2('Next: ' + fruitData[nextFruitType].name, {
	size: 60,
	fill: '#666666'
});
nextFruitTxt.anchor.set(0.5, 0);
LK.gui.topRight.addChild(nextFruitTxt);
nextFruitType = getRandomFruit();
var deadzoneVisual = LK.getAsset('deadzone', {
	anchorX: 0.5,
	anchorY: 0.5
});
deadzoneVisual.x = 1024;
deadzoneVisual.y = 190;
deadzoneVisual.alpha = 0.3;
game.addChild(deadzoneVisual);
game.down = function (x, y, obj) {
	if (!gameOver && !draggedFruit) {
		draggedFruit = createFruit(nextFruitType);
		dragOffsetX = x - draggedFruit.x;
		draggedFruit.velocity = {
			x: 0,
			y: 0
		};
		draggedFruit.isMoving = true;
		nextFruitType = getRandomFruit();
		nextFruitTxt.setText('Next: ' + fruitData[nextFruitType].name);
		LK.getSound('drop').play();
	}
};
game.move = function (x, y, obj) {
	if (draggedFruit) {
		draggedFruit.x = Math.max(containerLeft + draggedFruit.width / 2, Math.min(containerRight - draggedFruit.width / 2, x - dragOffsetX));
		draggedFruit.y = containerTop + 50;
		draggedFruit.velocity = {
			x: 0,
			y: 0
		};
	}
};
game.up = function (x, y, obj) {
	if (draggedFruit) {
		draggedFruit.velocity = {
			x: 0,
			y: 2
		};
		draggedFruit.isMoving = true;
		draggedFruit = null;
	}
};
game.update = function () {
	if (gameOver) return;
	for (var i = fruits.length - 1; i >= 0; i--) {
		var fruit = fruits[i];
		if (fruit.y > containerBottom + 500) {
			fruit.destroy();
			fruits.splice(i, 1);
		}
	}
	var mergedThisFrame = true;
	while (mergedThisFrame) {
		mergedThisFrame = checkCollisionsAndMerges();
	}
	updateDeadzone();
};
LK.playMusic('bgmusic');

===================================================================
--- original.js
+++ change.js
@@ -245,8 +245,39 @@
 	fill: '#333333'
 });
 scoreTxt.anchor.set(0.5, 0);
 LK.gui.top.addChild(scoreTxt);
+// Fruit progression display
+var progressionContainer = new Container();
+var progressionTitle = new Text2('Fruit Evolution Chain', {
+	size: 40,
+	fill: '#333333'
+});
+progressionTitle.anchor.set(0.5, 0);
+progressionTitle.x = 1024;
+progressionTitle.y = 50;
+progressionContainer.addChild(progressionTitle);
+// Display fruit progression in rows
+var fruitDisplayWidth = 150;
+var fruitDisplayHeight = 80;
+var fruitsPerRow = 6;
+var progressionStartY = 150;
+var progressionStartX = 200;
+for (var fIdx = 0; fIdx < fruitData.length; fIdx++) {
+	var row = Math.floor(fIdx / fruitsPerRow);
+	var col = fIdx % fruitsPerRow;
+	var displayX = progressionStartX + col * fruitDisplayWidth + 60;
+	var displayY = progressionStartY + row * fruitDisplayHeight + 40;
+	var fruitLabel = new Text2(fIdx + 1 + '. ' + fruitData[fIdx].name, {
+		size: 32,
+		fill: '#666666'
+	});
+	fruitLabel.anchor.set(0.5, 0.5);
+	fruitLabel.x = displayX;
+	fruitLabel.y = displayY;
+	progressionContainer.addChild(fruitLabel);
+}
+game.addChild(progressionContainer);
 var nextFruitTxt = new Text2('Next: ' + fruitData[nextFruitType].name, {
 	size: 60,
 	fill: '#666666'
 });