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

/**** 
* Classes
****/ 
// Import the tween plugin;
// BaseEnemy class to represent shared enemy functionality
var BaseEnemy = Container.expand(function () {
	var self = Container.call(this);
	// Properties to be set by inheriting classes
	self.speed = 5;
	self.assetName = 'bug';
	self.scoreValue = 1;
	// Initialize the graphics (to be called by child classes)
	self.initGraphics = function () {
		var bugGraphics = self.attachAsset(self.assetName, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		return bugGraphics;
	};
	self.update = function () {
		self.y += self.speed;
	};
	self.down = function (x, y, obj) {
		// Play photo snap sound
		LK.getSound('snapPhoto').play();
		// Create flash effect at position
		var flash = game.addChild(new FlashEffect());
		flash.x = self.x;
		flash.y = self.y;
		flash.showFlash();
		// Increment score
		LK.setScore(LK.getScore() + self.scoreValue);
		// Check if score is multiple of 50 to add a life
		var currentScore = LK.getScore();
		if (currentScore > 0 && currentScore % 50 === 0 && lives < 3) {
			lives += 1;
			// Play sound for life gain
			LK.getSound('liveUp').play();
			// Update hearts display
			for (var h = 0; h < hearts.length; h++) {
				hearts[h].setActive(h < lives);
			}
		}
		// Update score text
		scoreTxt.setText('Photos: ' + LK.getScore());
		// Replace with AnimatedBug
		var animatedBug = game.addChild(new AnimatedBug());
		animatedBug.x = self.x;
		animatedBug.y = self.y;
		isTouching = false; // Prevent car from moving when touching a bug
		self.destroy();
	};
	return self;
});
// EnemyFactory to create different types of enemies
// FastBug class to represent the fast bug that scrolls down the screen
var FastBug = BaseEnemy.expand(function () {
	var self = BaseEnemy.call(this);
	// Set fast bug specific properties
	self.assetName = 'fastBug';
	self.speed = 10;
	self.scoreValue = 1;
	// Initialize graphics
	var bugGraphics = self.initGraphics();
	return self;
});
var Bug = BaseEnemy.expand(function () {
	var self = BaseEnemy.call(this);
	// Set bug specific properties
	self.assetName = 'bug';
	self.speed = 5;
	self.scoreValue = 1;
	// Initialize graphics
	var bugGraphics = self.initGraphics();
	return self;
});
//<Assets used in the game will automatically appear here>
// AnimatedBug class to represent the bug that flies to the top of the screen
var AnimatedBug = BaseEnemy.expand(function () {
	var self = BaseEnemy.call(this);
	// Set animated bug specific properties
	self.assetName = 'bug';
	self.speed = 10;
	self.scoreValue = 0; // No score for animated bugs
	// Initialize graphics
	var bugGraphics = self.initGraphics();
	// Override update method for flying animation
	self.update = function () {
		// Determine the direction to fly to (left or right)
		var direction = Math.random() < 0.5 ? -1 : 1;
		// Update the x and y position
		self.x += self.speed * direction * 3;
		self.y -= self.speed * 3;
		// Destroy the bug when it flies off the screen
		if (self.y < 0 || self.x < 0 || self.x > 2048) {
			self.destroy();
		}
	};
	// Override down method - animated bugs can't be clicked
	self.down = function (x, y, obj) {
		// Do nothing - animated bugs can't be clicked
	};
	return self;
});
// FlashEffect class for camera flash when taking a photo
var FlashEffect = Container.expand(function () {
	var self = Container.call(this);
	// Create white rectangle for the flash
	var flashGraphics = self.attachAsset('flashRect', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Create the flash animation
	self.showFlash = function () {
		// Start with full visibility
		flashGraphics.alpha = 1;
		// Fade out quickly
		tween(flashGraphics, {
			alpha: 0
		}, {
			duration: 300,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.destroy();
			}
		});
	};
	return self;
});
// GrassStripe class for representing the scrolling grass stripes
var GrassStripe = Container.expand(function () {
	var self = Container.call(this);
	self.isDark = false; // Track if this is a dark stripe
	var stripeGraphics = self.attachAsset('grassStripe', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set speed of scrolling
	self.speed = 5;
	// Method to toggle between light and dark stripe
	self.setDark = function (isDark) {
		self.isDark = isDark;
		if (isDark) {
			stripeGraphics = self.attachAsset('grassStripeDark', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		} else {
			stripeGraphics = self.attachAsset('grassStripe', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		}
	};
	self.update = function () {
		self.y += self.speed;
		// If stripe moves off screen, reset to top
		if (self.y > 2732 + self.height / 2) {
			self.y = -self.height / 2;
		}
	};
	return self;
});
// Heart class to represent lives
var Heart = Container.expand(function () {
	var self = Container.call(this);
	var heartGraphics = self.attachAsset('heart', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.setActive = function (active) {
		heartGraphics.alpha = active ? 1 : 0.3;
	};
	return self;
});
// Jeep class to represent the player's vehicle
var Jeep = Container.expand(function () {
	var self = Container.call(this);
	var jeepGraphics = self.attachAsset('jeep', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.isImmune = false;
	self.immunityTimer = 0;
	self.setImmunity = function (immune) {
		self.isImmune = immune;
		if (immune) {
			// Create blinking effect using tweens
			var _blink = function blink() {
				if (!self.isImmune) {
					return;
				}
				tween(jeepGraphics, {
					alpha: 0.3
				}, {
					duration: 150,
					onFinish: function onFinish() {
						if (!self.isImmune) {
							return;
						}
						tween(jeepGraphics, {
							alpha: 1
						}, {
							duration: 150,
							onFinish: _blink
						});
					}
				});
			};
			// Start blinking effect with alternating alpha values
			self.immunityTimer = LK.setTimeout(function () {
				self.isImmune = false;
				// Reset alpha to fully opaque when immunity ends
				jeepGraphics.alpha = 1;
				// Stop any ongoing blink tweens
				tween.stop(jeepGraphics, {
					alpha: true
				});
			}, 3000);
			_blink();
		} else {
			// Clear immunity timer if immunity is turned off early
			if (self.immunityTimer) {
				LK.clearTimeout(self.immunityTimer);
				self.immunityTimer = 0;
			}
			jeepGraphics.alpha = 1;
		}
	};
	self.update = function () {
		var dx = targetPosition.x - self.x;
		// Only update x position, ignore vertical movement
		self.x += self.speed * (dx > 0 ? 1 : dx < 0 ? -1 : 0);
		// Keep y position fixed
		self.y = 2732 - 200; // Fixed position at bottom of screen
	};
});
var Tree = Container.expand(function () {
	var self = Container.call(this);
	var treeGraphics = self.attachAsset('tree', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	// Create a trunk hit box for collision detection
	self.trunkWidth = 60; // width of trunk collision area
	self.trunkHeight = 200; // height of trunk collision area
	self.trunkOffsetY = 50; // offset from center of tree
	// Check if point is within the trunk area
	self.trunkIntersects = function (obj) {
		// Calculate trunk boundaries
		var trunkLeft = self.x - self.trunkWidth / 2;
		var trunkRight = self.x + self.trunkWidth / 2;
		var trunkTop = self.y + self.trunkOffsetY - self.trunkHeight / 2;
		var trunkBottom = self.y + self.trunkOffsetY + self.trunkHeight / 2;
		// Get object boundaries
		var objLeft = obj.x - obj.width / 2;
		var objRight = obj.x + obj.width / 2;
		var objTop = obj.y - obj.height / 2;
		var objBottom = obj.y + obj.height / 2;
		// Check for intersection
		return !(objRight < trunkLeft || objLeft > trunkRight || objBottom < trunkTop || objTop > trunkBottom);
	};
	self.update = function () {
		self.y += self.speed;
	};
});

/**** 
* Initialize Game
****/ 
// Helper function to swap children in display list
var game = new LK.Game({
	backgroundColor: 0x006400 //Init game with darker green background
});

/**** 
* Game Code
****/ 
// Initialize game variables
// Helper function to swap children in display list
function swapChildren(parent, child1, child2) {
	if (!parent || !child1 || !child2) {
		return;
	}
	// Get the index of both children
	var index1 = -1;
	var index2 = -1;
	for (var i = 0; i < parent.children.length; i++) {
		if (parent.children[i] === child1) {
			index1 = i;
		}
		if (parent.children[i] === child2) {
			index2 = i;
		}
	}
	// If both children are found, swap them
	if (index1 !== -1 && index2 !== -1) {
		// Remove both children (higher index first to not affect the lower index)
		var temp;
		if (index1 > index2) {
			temp = parent.removeChildAt(index1);
			parent.addChildAt(temp, index2);
		} else {
			temp = parent.removeChildAt(index2);
			parent.addChildAt(temp, index1);
		}
	}
}
var jeep;
var scoreTxt;
var deathReasonTxt;
var deathReason = "";
var isTouching = false;
var grassStripes = [];
var lives = 3;
var hearts = [];
// Function to create scrolling grass stripes
function createGrassStripes() {
	// Clear existing stripes if any
	for (var i = 0; i < grassStripes.length; i++) {
		if (grassStripes[i]) {
			grassStripes[i].destroy();
		}
	}
	grassStripes = [];
	// Create new stripes to fill the screen
	var stripeHeight = 200;
	var numStripes = Math.ceil(2732 / stripeHeight) + 1; // +1 for seamless scrolling
	for (var i = 0; i < numStripes; i++) {
		var stripe = new GrassStripe();
		stripe.x = 2048 / 2;
		stripe.y = i * stripeHeight;
		stripe.setDark(i % 2 === 0); // Alternate between light and dark
		grassStripes.push(stripe);
		game.addChild(stripe);
		// Make sure stripes are added at the bottom of the display list (background)
		swapChildren(game, stripe, game.getChildAt(0));
	}
}
// Function to initialize game elements
function initGame() {
	// Reset lives to 3
	lives = 3;
	// Initialize grass stripes
	createGrassStripes();
	// Create and position the Jeep
	jeep = game.addChild(new Jeep());
	jeep.x = 2048 / 2;
	jeep.y = 2732 - 200;
	targetPosition.x = jeep.x;
	targetPosition.y = jeep.y;
	// Initialize score display
	scoreTxt = new Text2('Photos: 0', {
		size: 100,
		fill: 0xFFFFFF
	});
	// Initialize death reason display
	deathReasonTxt = new Text2('', {
		size: 80,
		fill: 0xFFFFFF
	});
	// Initialize lives display with heart icons
	hearts = [];
	for (var i = 0; i < 3; i++) {
		var heart = new Heart();
		heart.x = -300 + i * 120; // Position hearts side by side with spacing, offset from right edge
		heart.y = 100; // Position at top
		heart.setActive(i < lives);
		hearts.push(heart);
		LK.gui.topRight.addChild(heart);
	}
	// Initialize bugs, fastBugs and trees arrays
	bugs = [];
	fastBugs = [];
	trees = [];
	scoreTxt.anchor.set(0.5, 0);
	deathReasonTxt.anchor.set(0.5, 0);
	deathReasonTxt.y = 120; // Position below score text
	LK.gui.top.addChild(scoreTxt);
	LK.gui.top.addChild(deathReasonTxt);
}
var targetPosition = {
	x: 0,
	y: 0
};
game.down = function (x, y, obj) {
	// Check if the touch is on a bug, if so ignore and return
	for (var i = 0; i < bugs.length; i++) {
		if (x >= bugs[i].x - 100 && x <= bugs[i].x + 100 && y >= bugs[i].y - 100 && y <= bugs[i].y + 100) {
			return;
		}
	}
	// Check if the touch is on a fast bug, if so ignore and return
	for (var i = 0; i < fastBugs.length; i++) {
		if (x >= fastBugs[i].x - 100 && x <= fastBugs[i].x + 100 && y >= fastBugs[i].y - 100 && y <= fastBugs[i].y + 100) {
			return;
		}
	}
	// Set target position for the jeep movement (horizontal only)
	targetPosition.x = x;
	// Keep targetPosition.y fixed to maintain jeep's vertical position
	targetPosition.y = 2732 - 200;
};
game.update = function () {
	// Update grass stripes
	for (var i = 0; i < grassStripes.length; i++) {
		grassStripes[i].update();
	}
	jeep.update();
	// Bug spawning logic using factory
	if (LK.ticks % 60 == 0) {
		var newBug = EnemyFactory.createEnemy('bug');
		bugs.push(newBug);
		game.addChild(newBug);
	}
	if (LK.ticks % 180 == 0) {
		var newFastBug = EnemyFactory.createEnemy('fastBug');
		fastBugs.push(newFastBug);
		game.addChild(newFastBug);
	}
	if (LK.ticks % 180 == 0 && LK.getScore() >= 5) {
		var newTree = new Tree();
		newTree.x = Math.random() * 2048;
		newTree.y = 0;
		trees.push(newTree);
		game.addChild(newTree);
	}
	// Bug and tree movement and collision detection logic
	for (var i = bugs.length - 1; i >= 0; i--) {
		bugs[i].update();
		// Only check collision if it's not an AnimatedBug
		if (bugs[i].intersects(jeep) && !(bugs[i] instanceof AnimatedBug) && !jeep.isImmune) {
			deathReason = "Hit by a bug!";
			deathReasonTxt.setText(deathReason);
			LK.getSound('carCrash').play();
			lives -= 1;
			// Update hearts display
			for (var h = 0; h < hearts.length; h++) {
				hearts[h].setActive(h < lives);
			}
			if (lives <= 0) {
				LK.showGameOver();
			} else {
				// Give player immunity for 3 seconds
				jeep.setImmunity(true);
				// Remove the bug after collision
				bugs[i].destroy();
				bugs.splice(i, 1);
				// Flash screen to indicate damage
				LK.effects.flashScreen(0xff0000, 500);
				continue;
			}
		}
		if (bugs[i].y > 2732) {
			bugs[i].destroy();
			bugs.splice(i, 1);
		}
	}
	for (var i = fastBugs.length - 1; i >= 0; i--) {
		fastBugs[i].update();
		// Only check collision if it's not an AnimatedBug
		if (fastBugs[i].intersects(jeep) && !(fastBugs[i] instanceof AnimatedBug) && !jeep.isImmune) {
			deathReason = "Hit by a fast bug!";
			deathReasonTxt.setText(deathReason);
			LK.getSound('carCrash').play();
			lives -= 1;
			// Update hearts display
			for (var h = 0; h < hearts.length; h++) {
				hearts[h].setActive(h < lives);
			}
			if (lives <= 0) {
				LK.showGameOver();
			} else {
				// Give player immunity for 3 seconds
				jeep.setImmunity(true);
				// Remove the fast bug after collision
				fastBugs[i].destroy();
				fastBugs.splice(i, 1);
				// Flash screen to indicate damage
				LK.effects.flashScreen(0xff0000, 500);
				continue;
			}
		}
		if (fastBugs[i].y > 2732) {
			fastBugs[i].destroy();
			fastBugs.splice(i, 1);
		}
	}
	for (var i = trees.length - 1; i >= 0; i--) {
		trees[i].update();
		if (trees[i].trunkIntersects(jeep) && !jeep.isImmune) {
			deathReason = "Crashed into a tree!";
			deathReasonTxt.setText(deathReason);
			LK.getSound('carCrash').play();
			lives -= 1;
			// Update hearts display
			for (var h = 0; h < hearts.length; h++) {
				hearts[h].setActive(h < lives);
			}
			if (lives <= 0) {
				LK.showGameOver();
			} else {
				// Give player immunity for 3 seconds
				jeep.setImmunity(true);
				// Remove the tree after collision
				trees[i].destroy();
				trees.splice(i, 1);
				// Flash screen to indicate damage
				LK.effects.flashScreen(0xff0000, 500);
				continue;
			}
		}
		if (trees[i].y > 2732) {
			trees[i].destroy();
			trees.splice(i, 1);
		}
	}
};
// Initialize the game
initGame();
// Play safari background music
LK.playMusic('safariMusc');
// EnemyFactory to create different types of enemies
var EnemyFactory = function () {
	// Create a specific enemy type
	function createEnemy(type) {
		var enemy;
		switch (type) {
			case 'bug':
				enemy = new Bug();
				break;
			case 'fastBug':
				enemy = new FastBug();
				break;
			// Add more enemy types here
			default:
				enemy = new Bug();
				break;
		}
		// Set random position at top of screen
		enemy.x = Math.random() * 2048;
		enemy.y = 0;
		return enemy;
	}
	return {
		createEnemy: createEnemy
	};
}();

===================================================================
--- original.js
+++ change.js
@@ -5,49 +5,37 @@
 
 /**** 
 * Classes
 ****/ 
-//<Assets used in the game will automatically appear here>
-// AnimatedBug class to represent the bug that flies to the top of the screen
-var AnimatedBug = Container.expand(function () {
+// Import the tween plugin;
+// BaseEnemy class to represent shared enemy functionality
+var BaseEnemy = Container.expand(function () {
 	var self = Container.call(this);
-	var bugGraphics = self.attachAsset('bug', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-	self.speed = 10;
-	self.update = function () {
-		// Determine the direction to fly to (left or right)
-		var direction = Math.random() < 0.5 ? -1 : 1;
-		// Update the x and y position
-		self.x += self.speed * direction * 3;
-		self.y -= self.speed * 3;
-		// Destroy the bug when it flies off the screen
-		if (self.y < 0 || self.x < 0 || self.x > 2048) {
-			self.destroy();
-		}
-	};
-});
-var Bug = Container.expand(function () {
-	var self = Container.call(this);
-	var bugGraphics = self.attachAsset('bug', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
+	// Properties to be set by inheriting classes
 	self.speed = 5;
+	self.assetName = 'bug';
+	self.scoreValue = 1;
+	// Initialize the graphics (to be called by child classes)
+	self.initGraphics = function () {
+		var bugGraphics = self.attachAsset(self.assetName, {
+			anchorX: 0.5,
+			anchorY: 0.5
+		});
+		return bugGraphics;
+	};
 	self.update = function () {
 		self.y += self.speed;
 	};
 	self.down = function (x, y, obj) {
 		// Play photo snap sound
 		LK.getSound('snapPhoto').play();
-		// Create flash effect at bug position
+		// Create flash effect at position
 		var flash = game.addChild(new FlashEffect());
 		flash.x = self.x;
 		flash.y = self.y;
 		flash.showFlash();
 		// Increment score
-		LK.setScore(LK.getScore() + 1);
+		LK.setScore(LK.getScore() + self.scoreValue);
 		// Check if score is multiple of 50 to add a life
 		var currentScore = LK.getScore();
 		if (currentScore > 0 && currentScore % 50 === 0 && lives < 3) {
 			lives += 1;
@@ -59,57 +47,66 @@
 			}
 		}
 		// Update score text
 		scoreTxt.setText('Photos: ' + LK.getScore());
-		// Replace bug with AnimatedBug
+		// Replace with AnimatedBug
 		var animatedBug = game.addChild(new AnimatedBug());
 		animatedBug.x = self.x;
 		animatedBug.y = self.y;
 		isTouching = false; // Prevent car from moving when touching a bug
 		self.destroy();
 	};
+	return self;
 });
+// EnemyFactory to create different types of enemies
 // FastBug class to represent the fast bug that scrolls down the screen
-var FastBug = Container.expand(function () {
-	var self = Container.call(this);
-	var bugGraphics = self.attachAsset('fastBug', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
+var FastBug = BaseEnemy.expand(function () {
+	var self = BaseEnemy.call(this);
+	// Set fast bug specific properties
+	self.assetName = 'fastBug';
 	self.speed = 10;
+	self.scoreValue = 1;
+	// Initialize graphics
+	var bugGraphics = self.initGraphics();
+	return self;
+});
+var Bug = BaseEnemy.expand(function () {
+	var self = BaseEnemy.call(this);
+	// Set bug specific properties
+	self.assetName = 'bug';
+	self.speed = 5;
+	self.scoreValue = 1;
+	// Initialize graphics
+	var bugGraphics = self.initGraphics();
+	return self;
+});
+//<Assets used in the game will automatically appear here>
+// AnimatedBug class to represent the bug that flies to the top of the screen
+var AnimatedBug = BaseEnemy.expand(function () {
+	var self = BaseEnemy.call(this);
+	// Set animated bug specific properties
+	self.assetName = 'bug';
+	self.speed = 10;
+	self.scoreValue = 0; // No score for animated bugs
+	// Initialize graphics
+	var bugGraphics = self.initGraphics();
+	// Override update method for flying animation
 	self.update = function () {
-		self.y += self.speed;
+		// Determine the direction to fly to (left or right)
+		var direction = Math.random() < 0.5 ? -1 : 1;
+		// Update the x and y position
+		self.x += self.speed * direction * 3;
+		self.y -= self.speed * 3;
+		// Destroy the bug when it flies off the screen
+		if (self.y < 0 || self.x < 0 || self.x > 2048) {
+			self.destroy();
+		}
 	};
+	// Override down method - animated bugs can't be clicked
 	self.down = function (x, y, obj) {
-		// Play photo snap sound
-		LK.getSound('snapPhoto').play();
-		// Create flash effect at bug position
-		var flash = game.addChild(new FlashEffect());
-		flash.x = self.x;
-		flash.y = self.y;
-		flash.showFlash();
-		// Increment score
-		LK.setScore(LK.getScore() + 1);
-		// Check if score is multiple of 50 to add a life
-		var currentScore = LK.getScore();
-		if (currentScore > 0 && currentScore % 50 === 0 && lives < 3) {
-			lives += 1;
-			// Play sound for life gain
-			LK.getSound('liveUp').play();
-			// Update hearts display
-			for (var h = 0; h < hearts.length; h++) {
-				hearts[h].setActive(h < lives);
-			}
-		}
-		// Update score text
-		scoreTxt.setText('Photos: ' + LK.getScore());
-		// Replace bug with AnimatedBug
-		var animatedBug = game.addChild(new AnimatedBug());
-		animatedBug.x = self.x;
-		animatedBug.y = self.y;
-		isTouching = false; // Prevent car from moving when touching a bug
-		self.destroy();
+		// Do nothing - animated bugs can't be clicked
 	};
+	return self;
 });
 // FlashEffect class for camera flash when taking a photo
 var FlashEffect = Container.expand(function () {
 	var self = Container.call(this);
@@ -416,20 +413,16 @@
 	for (var i = 0; i < grassStripes.length; i++) {
 		grassStripes[i].update();
 	}
 	jeep.update();
-	// Bug and tree spawning logic
+	// Bug spawning logic using factory
 	if (LK.ticks % 60 == 0) {
-		var newBug = new Bug();
-		newBug.x = Math.random() * 2048;
-		newBug.y = 0;
+		var newBug = EnemyFactory.createEnemy('bug');
 		bugs.push(newBug);
 		game.addChild(newBug);
 	}
 	if (LK.ticks % 180 == 0) {
-		var newFastBug = new FastBug();
-		newFastBug.x = Math.random() * 2048;
-		newFastBug.y = 0;
+		var newFastBug = EnemyFactory.createEnemy('fastBug');
 		fastBugs.push(newFastBug);
 		game.addChild(newFastBug);
 	}
 	if (LK.ticks % 180 == 0 && LK.getScore() >= 5) {
@@ -533,5 +526,30 @@
 // Initialize the game
 initGame();
 // Play safari background music
 LK.playMusic('safariMusc');
-// Import the tween plugin;
\ No newline at end of file
+// EnemyFactory to create different types of enemies
+var EnemyFactory = function () {
+	// Create a specific enemy type
+	function createEnemy(type) {
+		var enemy;
+		switch (type) {
+			case 'bug':
+				enemy = new Bug();
+				break;
+			case 'fastBug':
+				enemy = new FastBug();
+				break;
+			// Add more enemy types here
+			default:
+				enemy = new Bug();
+				break;
+		}
+		// Set random position at top of screen
+		enemy.x = Math.random() * 2048;
+		enemy.y = 0;
+		return enemy;
+	}
+	return {
+		createEnemy: createEnemy
+	};
+}();
\ No newline at end of file