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

/**** 
* Classes
****/ 
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.gravity = 0.8;
	self.isLaunched = false;
	self.health = 1;
	self.update = function () {
		if (self.isLaunched) {
			self.velocityY += self.gravity;
			self.x += self.velocityX;
			self.y += self.velocityY;
			// Ground collision
			if (self.y > 2600) {
				self.velocityX *= 0.7;
				self.velocityY = -self.velocityY * 0.8;
				self.y = 2600;
			}
			// Side bounds
			if (self.x < 0 || self.x > 2048) {
				self.velocityX = -self.velocityX * 0.5;
			}
			// Stop if moving too slowly
			if (Math.abs(self.velocityX) < 0.5 && Math.abs(self.velocityY) < 0.5 && self.y >= 2600) {
				self.isLaunched = false;
				self.velocityX = 0;
				self.velocityY = 0;
			}
		}
	};
	self.launch = function (vx, vy) {
		self.velocityX = vx;
		self.velocityY = vy;
		self.isLaunched = true;
		LK.getSound('launch').play();
	};
	return self;
});
var Block = Container.expand(function (type) {
	var self = Container.call(this);
	var blockGraphics = self.attachAsset(type + 'Block', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = type;
	self.isDestroyed = false;
	// Set health based on material
	if (type === 'glass') {
		self.health = 1;
	} else if (type === 'wood') {
		self.health = 2;
	} else if (type === 'stone') {
		self.health = 3;
	}
	self.takeDamage = function () {
		self.health--;
		if (self.health <= 0) {
			self.destroy();
			self.isDestroyed = true;
			LK.getSound('destroy').play();
			LK.effects.flashObject(self, 0xff0000, 300);
		} else {
			LK.effects.flashObject(self, 0xffff00, 200);
			LK.getSound('hit').play();
		}
	};
	return self;
});
var Pig = Container.expand(function () {
	var self = Container.call(this);
	var pigGraphics = self.attachAsset('pig', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 1;
	self.isDestroyed = false;
	self.takeDamage = function () {
		self.health--;
		if (self.health <= 0) {
			self.destroy();
			self.isDestroyed = true;
			LK.getSound('destroy').play();
			LK.effects.flashObject(self, 0xff0000, 300);
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
// Game variables
var slingshot;
var currentBird;
var birds = [];
var pigs = [];
var blocks = [];
var trajectoryPoints = [];
var isDragging = false;
var dragStartX = 0;
var dragStartY = 0;
var slingshotX = 300;
var slingshotY = 2400;
var birdsUsed = 0;
var maxBirds = 3;
var levelComplete = false;
// UI Elements
var scoreText = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
var birdsLeftText = new Text2('Birds: 3', {
	size: 60,
	fill: 0xFFFFFF
});
birdsLeftText.anchor.set(0, 0);
birdsLeftText.x = 50;
birdsLeftText.y = 50;
LK.gui.topLeft.addChild(birdsLeftText);
// Create slingshot
slingshot = game.addChild(LK.getAsset('slingshot', {
	anchorX: 0.5,
	anchorY: 1.0,
	x: slingshotX,
	y: slingshotY
}));
// Create level
function createLevel() {
	// Create pigs
	var pig1 = game.addChild(new Pig());
	pig1.x = 1400;
	pig1.y = 2200;
	pigs.push(pig1);
	var pig2 = game.addChild(new Pig());
	pig2.x = 1600;
	pig2.y = 2200;
	pigs.push(pig2);
	// Create structure
	var woodBlock1 = game.addChild(new Block('wood'));
	woodBlock1.x = 1300;
	woodBlock1.y = 2300;
	blocks.push(woodBlock1);
	var woodBlock2 = game.addChild(new Block('wood'));
	woodBlock2.x = 1500;
	woodBlock2.y = 2300;
	blocks.push(woodBlock2);
	var woodBlock3 = game.addChild(new Block('wood'));
	woodBlock3.x = 1700;
	woodBlock3.y = 2300;
	blocks.push(woodBlock3);
	var glassBlock1 = game.addChild(new Block('glass'));
	glassBlock1.x = 1400;
	glassBlock1.y = 2250;
	blocks.push(glassBlock1);
	var glassBlock2 = game.addChild(new Block('glass'));
	glassBlock2.x = 1600;
	glassBlock2.y = 2250;
	blocks.push(glassBlock2);
	var stoneBlock1 = game.addChild(new Block('stone'));
	stoneBlock1.x = 1500;
	stoneBlock1.y = 2200;
	blocks.push(stoneBlock1);
}
// Create first bird
function createBird() {
	if (birdsUsed < maxBirds) {
		currentBird = game.addChild(new Bird());
		currentBird.x = slingshotX;
		currentBird.y = slingshotY - 100;
		birds.push(currentBird);
	}
}
// Clear trajectory
function clearTrajectory() {
	for (var i = 0; i < trajectoryPoints.length; i++) {
		trajectoryPoints[i].destroy();
	}
	trajectoryPoints = [];
}
// Show trajectory
function showTrajectory(startX, startY, velocityX, velocityY) {
	clearTrajectory();
	var x = startX;
	var y = startY;
	var vx = velocityX;
	var vy = velocityY;
	for (var i = 0; i < 20; i++) {
		vy += 0.8;
		x += vx;
		y += vy;
		if (y > 2600) break;
		var point = game.addChild(LK.getAsset('trajectory', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: x,
			y: y,
			alpha: 0.5
		}));
		trajectoryPoints.push(point);
	}
}
// Check collisions
function checkCollisions() {
	for (var i = birds.length - 1; i >= 0; i--) {
		var bird = birds[i];
		if (!bird.isLaunched) continue;
		// Check pig collisions
		for (var j = pigs.length - 1; j >= 0; j--) {
			var pig = pigs[j];
			if (!pig.isDestroyed && bird.intersects(pig)) {
				pig.takeDamage();
				if (pig.isDestroyed) {
					LK.setScore(LK.getScore() + 100);
					scoreText.setText('Score: ' + LK.getScore());
					pigs.splice(j, 1);
				}
			}
		}
		// Check block collisions
		for (var k = blocks.length - 1; k >= 0; k--) {
			var block = blocks[k];
			if (!block.isDestroyed && bird.intersects(block)) {
				block.takeDamage();
				bird.velocityX *= 0.5;
				bird.velocityY *= 0.5;
				if (block.isDestroyed) {
					LK.setScore(LK.getScore() + 50);
					scoreText.setText('Score: ' + LK.getScore());
					blocks.splice(k, 1);
				}
			}
		}
	}
}
// Check win condition
function checkWinCondition() {
	if (pigs.length === 0 && !levelComplete) {
		levelComplete = true;
		LK.setTimeout(function () {
			LK.showYouWin();
		}, 1000);
	} else if (birdsUsed >= maxBirds && pigs.length > 0 && !levelComplete) {
		levelComplete = true;
		LK.setTimeout(function () {
			LK.showGameOver();
		}, 1000);
	}
}
// Game event handlers
game.down = function (x, y, obj) {
	if (currentBird && !currentBird.isLaunched && !levelComplete) {
		isDragging = true;
		dragStartX = x;
		dragStartY = y;
	}
};
game.move = function (x, y, obj) {
	if (isDragging && currentBird && !currentBird.isLaunched) {
		var deltaX = dragStartX - x;
		var deltaY = dragStartY - y;
		// Limit drag distance
		var maxDrag = 150;
		var distance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
		if (distance > maxDrag) {
			deltaX = deltaX / distance * maxDrag;
			deltaY = deltaY / distance * maxDrag;
		}
		currentBird.x = slingshotX - deltaX;
		currentBird.y = slingshotY - 100 - deltaY;
		// Show trajectory
		var velocityX = deltaX * 0.2;
		var velocityY = deltaY * 0.2;
		showTrajectory(currentBird.x, currentBird.y, velocityX, velocityY);
	}
};
game.up = function (x, y, obj) {
	if (isDragging && currentBird && !currentBird.isLaunched) {
		isDragging = false;
		clearTrajectory();
		var deltaX = dragStartX - x;
		var deltaY = dragStartY - y;
		// Limit drag distance
		var maxDrag = 150;
		var distance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
		if (distance > maxDrag) {
			deltaX = deltaX / distance * maxDrag;
			deltaY = deltaY / distance * maxDrag;
		}
		if (distance > 10) {
			var velocityX = deltaX * 0.2;
			var velocityY = deltaY * 0.2;
			currentBird.launch(velocityX, velocityY);
			birdsUsed++;
			birdsLeftText.setText('Birds: ' + (maxBirds - birdsUsed));
			// Create next bird after delay
			LK.setTimeout(function () {
				if (birdsUsed < maxBirds && pigs.length > 0) {
					createBird();
				}
			}, 2000);
			currentBird = null;
		} else {
			// Reset bird position
			currentBird.x = slingshotX;
			currentBird.y = slingshotY - 100;
		}
	}
};
game.update = function () {
	checkCollisions();
	checkWinCondition();
};
// Initialize level
createLevel();
createBird();

===================================================================
--- original.js
+++ change.js
@@ -24,9 +24,9 @@
 			self.y += self.velocityY;
 			// Ground collision
 			if (self.y > 2600) {
 				self.velocityX *= 0.7;
-				self.velocityY = -self.velocityY * 0.3;
+				self.velocityY = -self.velocityY * 0.8;
 				self.y = 2600;
 			}
 			// Side bounds
 			if (self.x < 0 || self.x > 2048) {