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

/**** 
* Classes
****/ 
var Blade = Container.expand(function () {
	var self = Container.call(this);
	var bladeGraphics = self.attachAsset('blade', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	bladeGraphics.alpha = 0; // Invisible until used
	var trail = new Trail();
	game.addChild(trail);
	var active = false;
	var lastX = 0;
	var lastY = 0;
	var velocity = 0;
	self.activate = function (x, y) {
		active = true;
		self.x = x;
		self.y = y;
		lastX = x;
		lastY = y;
		bladeGraphics.alpha = 1;
	};
	self.deactivate = function () {
		active = false;
		bladeGraphics.alpha = 0;
		trail.clear();
	};
	self.move = function (x, y) {
		if (!active) return;
		// Calculate angle based on movement direction
		var dx = x - lastX;
		var dy = y - lastY;
		if (dx !== 0 || dy !== 0) {
			self.rotation = Math.atan2(dy, dx) + Math.PI / 2;
			// Calculate velocity for hit detection
			velocity = Math.sqrt(dx * dx + dy * dy);
			// Update blade position
			self.x = x;
			self.y = y;
			// Add point to trail
			trail.addPoint(x, y);
			lastX = x;
			lastY = y;
		}
	};
	self.isActive = function () {
		return active;
	};
	self.getVelocity = function () {
		return velocity;
	};
	self.update = function () {
		if (active) {
			// Gradually decrease velocity when not moving
			velocity *= 0.95;
		}
		trail.update();
	};
	return self;
});
var Bomb = Container.expand(function () {
	var self = Container.call(this);
	var bombGraphics = self.attachAsset('bomb', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.radius = bombGraphics.width / 2;
	self.velocity = {
		x: Math.random() * 8 - 4,
		y: 2 + Math.random() * 2
	};
	self.gravity = 0.1;
	self.rotationSpeed = Math.random() * 0.1 - 0.05;
	self.sliced = false;
	self.update = function () {
		if (self.sliced) return;
		self.x += self.velocity.x;
		self.y += self.velocity.y;
		self.velocity.y += self.gravity;
		self.rotation += self.rotationSpeed;
		// Remove bomb if it falls below screen
		if (self.y > 2732 + self.radius) {
			self.destroy();
		}
	};
	self.slice = function () {
		if (self.sliced) return false;
		self.sliced = true;
		// Create explosion
		var explosion = LK.getAsset('explosion', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: self.x,
			y: self.y,
			alpha: 0.8
		});
		game.addChild(explosion);
		// Fade out explosion
		tween(explosion, {
			alpha: 0,
			scaleX: 2,
			scaleY: 2
		}, {
			duration: 500,
			onFinish: function onFinish() {
				explosion.destroy();
			}
		});
		// Fade out bomb
		tween(bombGraphics, {
			alpha: 0
		}, {
			duration: 200,
			onFinish: function onFinish() {
				self.destroy();
			}
		});
		LK.getSound('explode').play();
		return true;
	};
	return self;
});
var Fruit = Container.expand(function () {
	var self = Container.call(this);
	var type = Math.floor(Math.random() * 3);
	var colors = [0x00FF00, 0xFF8800, 0xFF0088]; // green, orange, pink
	var fruitGraphics = self.attachAsset('fruit', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	fruitGraphics.tint = colors[type];
	self.radius = fruitGraphics.width / 2;
	self.velocity = {
		x: Math.random() * 8 - 4,
		y: 2 + Math.random() * 2
	};
	self.gravity = 0.1;
	self.rotationSpeed = Math.random() * 0.1 - 0.05;
	self.sliced = false;
	self.value = 1;
	self.update = function () {
		if (self.sliced) return;
		self.x += self.velocity.x;
		self.y += self.velocity.y;
		self.velocity.y += self.gravity;
		self.rotation += self.rotationSpeed;
		// Remove fruit if it falls below screen
		if (self.y > 2732 + self.radius) {
			self.destroy();
		}
	};
	self.slice = function () {
		if (self.sliced) return false;
		self.sliced = true;
		// Create juice splat
		var splat = LK.getAsset('splat', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: self.x,
			y: self.y
		});
		splat.tint = fruitGraphics.tint;
		splat.alpha = 0.7;
		game.addChild(splat);
		// Fade out splat
		tween(splat, {
			alpha: 0,
			scaleX: 1.5,
			scaleY: 1.5
		}, {
			duration: 500,
			onFinish: function onFinish() {
				splat.destroy();
			}
		});
		// Fade out fruit
		tween(fruitGraphics, {
			alpha: 0
		}, {
			duration: 300,
			onFinish: function onFinish() {
				self.destroy();
			}
		});
		LK.getSound('slice').play();
		return true;
	};
	return self;
});
var Trail = Container.expand(function () {
	var self = Container.call(this);
	var particles = [];
	var lastPosition = null;
	var activeTicks = 0;
	var maxTicks = 10;
	self.addPoint = function (x, y) {
		activeTicks = maxTicks;
		if (lastPosition) {
			// Calculate distance between last point and new point
			var dx = x - lastPosition.x;
			var dy = y - lastPosition.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			// Add trail particles along the path
			var numParticles = Math.min(Math.floor(distance / 10), 10);
			for (var i = 0; i < numParticles; i++) {
				var ratio = i / numParticles;
				var px = lastPosition.x + dx * ratio;
				var py = lastPosition.y + dy * ratio;
				var particle = LK.getAsset('trail', {
					anchorX: 0.5,
					anchorY: 0.5,
					x: px,
					y: py,
					alpha: 0.8
				});
				game.addChild(particle);
				particles.push(particle);
				// Animate particle fade out
				tween(particle, {
					alpha: 0,
					scaleX: 0.5,
					scaleY: 0.5
				}, {
					duration: 500,
					onFinish: function () {
						var p = particle;
						return function () {
							p.destroy();
							var index = particles.indexOf(p);
							if (index > -1) {
								particles.splice(index, 1);
							}
						};
					}()
				});
			}
		}
		lastPosition = {
			x: x,
			y: y
		};
	};
	self.update = function () {
		activeTicks--;
		if (activeTicks <= 0) {
			lastPosition = null;
		}
	};
	self.clear = function () {
		for (var i = 0; i < particles.length; i++) {
			particles[i].destroy();
		}
		particles = [];
		lastPosition = null;
		activeTicks = 0;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2c3e50
});

/**** 
* Game Code
****/ 
// Game configuration
var spawnInterval = 1000; // ms between fruit spawns
var minSpawnInterval = 400; // Fastest spawn rate
var difficultyIncreaseRate = 50; // ms to decrease from spawn interval per wave
var bombProbability = 0.2; // Chance of spawning a bomb instead of fruit
var maxBombProbability = 0.3; // Maximum bomb probability
var comboTimeWindow = 300; // ms window for combo detection
var waveSize = 5; // Number of items per wave
var itemsInCurrentWave = 0;
var waveCount = 1;
var gameActive = false;
// Game objects
var fruits = [];
var bombs = [];
var blade = new Blade();
var comboCounter = 0;
var comboTimeout = null;
var lastSliceTime = 0;
// GUI Elements
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var comboTxt = new Text2('', {
	size: 100,
	fill: 0xFFFF00
});
comboTxt.anchor.set(0.5, 0.5);
LK.gui.center.addChild(comboTxt);
comboTxt.alpha = 0;
// Create hint text
var hintTxt = new Text2('Swipe to slice fruits!\nAvoid bombs!', {
	size: 80,
	fill: 0xFFFFFF
});
hintTxt.anchor.set(0.5, 0.5);
LK.gui.center.addChild(hintTxt);
// Initialize game
game.addChild(blade);
// Start spawning after a short delay
LK.setTimeout(function () {
	gameActive = true;
	spawnWave();
	hintTxt.alpha = 0;
	// Play background music
	LK.playMusic('gameMusic', {
		fade: {
			start: 0,
			end: 0.4,
			duration: 1000
		}
	});
}, 1500);
// Spawn a wave of fruits/bombs
function spawnWave() {
	if (!gameActive) return;
	itemsInCurrentWave = 0;
	// Spawn wave items with delay between each
	var itemInterval = LK.setInterval(function () {
		if (!gameActive) {
			LK.clearInterval(itemInterval);
			return;
		}
		spawnItem();
		itemsInCurrentWave++;
		if (itemsInCurrentWave >= waveSize) {
			LK.clearInterval(itemInterval);
			// Schedule next wave
			LK.setTimeout(function () {
				if (gameActive) {
					waveCount++;
					// Increase difficulty
					spawnInterval = Math.max(minSpawnInterval, spawnInterval - difficultyIncreaseRate);
					bombProbability = Math.min(maxBombProbability, bombProbability + 0.01);
					spawnWave();
				}
			}, spawnInterval * 2);
		}
	}, spawnInterval / 2);
}
// Spawn a single fruit or bomb
function spawnItem() {
	if (!gameActive) return;
	var isBomb = Math.random() < bombProbability;
	var item;
	if (isBomb) {
		item = new Bomb();
		bombs.push(item);
	} else {
		item = new Fruit();
		fruits.push(item);
	}
	// Position at top of screen with random x
	item.x = Math.random() * (2048 - 200) + 100;
	item.y = -item.radius;
	game.addChild(item);
}
// Handle combo system
function handleCombo() {
	// Clear existing combo timeout
	if (comboTimeout !== null) {
		LK.clearTimeout(comboTimeout);
	}
	comboCounter++;
	// Display combo text if combo > 1
	if (comboCounter > 1) {
		var comboText = comboCounter + "x Combo!";
		comboTxt.setText(comboText);
		comboTxt.alpha = 1;
		// Add combo bonus points
		LK.setScore(LK.getScore() + comboCounter);
		scoreTxt.setText(LK.getScore());
		// Play combo sound if combo >= 3
		if (comboCounter >= 3) {
			LK.getSound('combo').play();
		}
		// Animate combo text
		tween.stop(comboTxt);
		comboTxt.scale.set(1.5);
		tween(comboTxt, {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 300,
			easing: tween.elasticOut
		});
	}
	// Set timeout to reset combo
	comboTimeout = LK.setTimeout(function () {
		comboCounter = 0;
		tween(comboTxt, {
			alpha: 0
		}, {
			duration: 300
		});
	}, comboTimeWindow);
}
// Check for slices
function checkSlices(x, y) {
	if (!blade.isActive() || blade.getVelocity() < 3) return;
	var sliced = false;
	// Check fruits
	for (var i = fruits.length - 1; i >= 0; i--) {
		var fruit = fruits[i];
		var dx = fruit.x - x;
		var dy = fruit.y - y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < fruit.radius + 30) {
			if (fruit.slice()) {
				fruits.splice(i, 1);
				LK.setScore(LK.getScore() + 1);
				scoreTxt.setText(LK.getScore());
				// Handle combo system
				var now = Date.now();
				if (now - lastSliceTime < comboTimeWindow) {
					handleCombo();
				} else {
					comboCounter = 0;
				}
				lastSliceTime = now;
				sliced = true;
			}
		}
	}
	// Check bombs
	for (var j = bombs.length - 1; j >= 0; j--) {
		var bomb = bombs[j];
		var bdx = bomb.x - x;
		var bdy = bomb.y - y;
		var bdistance = Math.sqrt(bdx * bdx + bdy * bdy);
		if (bdistance < bomb.radius + 30) {
			if (bomb.slice()) {
				bombs.splice(j, 1);
				// Game over when bomb is sliced
				gameActive = false;
				// Flash screen red
				LK.effects.flashScreen(0xff0000, 1000);
				// Show game over after a short delay
				LK.setTimeout(function () {
					LK.showGameOver();
				}, 1200);
			}
		}
	}
	return sliced;
}
// Game update loop
game.update = function () {
	if (!gameActive) return;
	// Update blade
	blade.update();
	// Update fruits
	for (var i = fruits.length - 1; i >= 0; i--) {
		fruits[i].update();
	}
	// Update bombs
	for (var j = bombs.length - 1; j >= 0; j--) {
		bombs[j].update();
	}
	// If blade is active, check for collisions
	if (blade.isActive()) {
		checkSlices(blade.x, blade.y);
	}
};
// Touch/mouse event handlers
game.down = function (x, y, obj) {
	blade.activate(x, y);
};
game.move = function (x, y, obj) {
	blade.move(x, y);
};
game.up = function (x, y, obj) {
	blade.deactivate();
};

===================================================================
--- original.js
+++ change.js
@@ -74,11 +74,11 @@
 	});
 	self.radius = bombGraphics.width / 2;
 	self.velocity = {
 		x: Math.random() * 8 - 4,
-		y: 3 + Math.random() * 3
+		y: 2 + Math.random() * 2
 	};
-	self.gravity = 0.2;
+	self.gravity = 0.1;
 	self.rotationSpeed = Math.random() * 0.1 - 0.05;
 	self.sliced = false;
 	self.update = function () {
 		if (self.sliced) return;
@@ -139,11 +139,11 @@
 	fruitGraphics.tint = colors[type];
 	self.radius = fruitGraphics.width / 2;
 	self.velocity = {
 		x: Math.random() * 8 - 4,
-		y: 3 + Math.random() * 3
+		y: 2 + Math.random() * 2
 	};
-	self.gravity = 0.2;
+	self.gravity = 0.1;
 	self.rotationSpeed = Math.random() * 0.1 - 0.05;
 	self.sliced = false;
 	self.value = 1;
 	self.update = function () {