/**** 
* Classes
****/
// Sheep class
var Sheep = Container.expand(function () {
	var self = Container.call(this);
	var sheepGraphics = self.attachAsset('sheep', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 1;
	self.direction = Math.random() * Math.PI * 2;
	self.move = function () {
		var deltaX = Math.cos(self.direction) * self.speed;
		var deltaY = Math.sin(self.direction) * self.speed;
		self.x += deltaX;
		self.y += deltaY;
		if (deltaX > 0) {
			self.rotation = 5 * (Math.PI / 180);
		} else if (deltaX < 0) {
			self.rotation = -5 * (Math.PI / 180);
		}
	};
	self.avoidWalls = function () {
		if (self.x < 300 || self.x > 1748 || self.y < 300 || self.y > 2432) {
			self.direction += Math.PI;
		}
	};
	self.avoidDog = function (dog, targetPosition) {
		if (self.intersects(dog)) {
			var dx = targetPosition.x - self.x;
			var dy = targetPosition.y - self.y;
			self.direction = Math.atan2(dy, dx);
		}
	};
	self.avoidSheep = function (sheepArray, stoneArray) {
		var personalSpace = 150; // Define a personal space radius for each sheep
		for (var i = 0; i < sheepArray.length; i++) {
			var otherSheep = sheepArray[i];
			if (self !== otherSheep) {
				var dx = otherSheep.x - self.x;
				var dy = otherSheep.y - self.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance < personalSpace) {
					var avoidanceForce = 1;
					var avoidanceAngle = Math.atan2(dy, dx) + Math.PI; // Opposite direction
					self.direction = avoidanceAngle;
					self.x += Math.cos(self.direction) * self.speed * avoidanceForce;
					self.y += Math.sin(self.direction) * self.speed * avoidanceForce;
				}
			}
		}
		// Avoid stones
		for (var j = 0; j < stoneArray.length; j++) {
			var stone = stoneArray[j];
			var dx = stone.x - self.x;
			var dy = stone.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < personalSpace) {
				var avoidanceForce = 1;
				var avoidanceAngle = Math.atan2(dy, dx) + Math.PI; // Opposite direction
				self.direction = avoidanceAngle;
				self.x += Math.cos(self.direction) * self.speed * avoidanceForce;
				self.y += Math.sin(self.direction) * self.speed * avoidanceForce;
			}
		}
	};
});
// Baa class
var Baa = Container.expand(function () {
	var self = Container.call(this);
	var baaGraphics = self.attachAsset('baa', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.visible = false;
	self.currentSheep = null;
	self.show = function (sheep) {
		if (!self.currentSheep) {
			self.currentSheep = [];
		}
		self.currentSheep.push(sheep);
		self.visible = true;
		LK.setTimeout(function () {
			self.currentSheep.splice(self.currentSheep.indexOf(sheep), 1);
			if (self.currentSheep.length === 0) {
				self.visible = false;
			}
		}, 1000);
	};
	self.tick = function () {
		if (self.visible && self.currentSheep && self.currentSheep.length > 0) {
			for (var i = 0; i < self.currentSheep.length; i++) {
				var sheep = self.currentSheep[i];
				self.x = sheep.x;
				self.y = sheep.y - sheep.height / 2 - self.height / 2;
			}
		}
	};
});
// Shepherd dog class with two states
var Dog = Container.expand(function () {
	var self = Container.call(this);
	var dogGraphics = self.attachAsset('dog', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var dog2Graphics = self.attachAsset('dog2', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	dog2Graphics.visible = false; // Initially hide the dog2
	self.targetPosition = {
		x: 1024,
		y: 1366
	}; // Default target position in the middle
	self.move = function (pos, lastPos) {
		self.x = pos.x;
		self.y = pos.y;
		if (pos.x > lastPos.x) {
			dogGraphics.visible = true;
			dog2Graphics.visible = false;
		} else if (pos.x < lastPos.x) {
			dogGraphics.visible = false;
			dog2Graphics.visible = true;
		}
	};
	self.lastPos = {
		x: self.x,
		y: self.y
	}; // Store the last position
	self.setTargetPosition = function (pos) {
		self.targetPosition = pos;
	};
});
// GrassLayer class
var GrassLayer = Container.expand(function () {
	var self = Container.call(this);
	GrassLayer.prototype.addGrassWithLimitedNumber = function () {
		var interval = 1000; // Interval of 1 second
		LK.setInterval(function () {
			if (self.grassInstances.length < 20) {
				self.addGrass();
			}
			if (self.stoneInstances.length < 3) {
				self.addStone();
			}
		}, interval);
	};
	self.stoneInstances = [];
	self.addStone = function () {
		var stone = new Stone();
		self.addChild(stone);
		self.stoneInstances.push(stone);
		self.avoidStoneGrassCollision(stone);
	};
	self.avoidStoneGrassCollision = function (stone) {
		for (var i = 0; i < self.grassInstances.length; i++) {
			var grass = self.grassInstances[i];
			if (stone.intersects(grass)) {
				stone.resetPosition();
				i = -1; // Restart the loop to check for collisions again
			}
		}
	};
	self.moveStones = function () {
		for (var j = 0; j < self.stoneInstances.length; j++) {
			self.stoneInstances[j].move();
		}
	};
	self.grassInstances = [];
	self.addGrass = function () {
		var grass = new Grass();
		self.addChild(grass);
		self.grassInstances.push(grass);
		self.avoidGrassStoneCollision(grass);
	};
	self.avoidGrassStoneCollision = function (grass) {
		for (var i = 0; i < self.stoneInstances.length; i++) {
			var stone = self.stoneInstances[i];
			if (grass.intersects(stone)) {
				grass.resetPosition();
				i = -1; // Restart the loop to check for collisions again
			}
		}
	};
	self.moveGrass = function () {
		for (var j = 0; j < self.grassInstances.length; j++) {
			self.grassInstances[j].move();
		}
	};
	self.addGrassWithUniformInterval = function () {
		self.addGrass();
		var interval = 1000; // Uniform interval of 1 second
		LK.setInterval(self.addGrass, interval);
	};
	self.addGrassWithLimitedNumber(); // Initialize the process with a limited number of grass instances
});
// Grass class
var Grass = Container.expand(function () {
	var self = Container.call(this);
	var grassGraphics = self.attachAsset('grass', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.resetPosition = function () {
		self.x = Math.random() * 2048;
		self.y = -self.height;
	};
	self.move = function () {
		self.y += 2; // Move down at a constant speed
		if (self.y > 2732) {
			// If grass is below the screen
			self.resetPosition(); // Reset to the top
		}
	};
	self.resetPosition(); // Initialize position
});
// Stone class
var Stone = Container.expand(function () {
	var self = Container.call(this);
	var stoneGraphics = self.attachAsset('rock', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.resetPosition = function () {
		self.x = Math.random() * 2048;
		self.y = -self.height;
	};
	self.move = function () {
		self.y += 2; // Move down at the same speed as grass
		if (self.y > 2732) {
			// If stone is below the screen
			self.resetPosition(); // Reset to the top
		}
	};
	self.resetPosition(); // Initialize position
});
// FenceLayer class
var FenceLayer = Container.expand(function () {
	var self = Container.call(this);
	self.fenceString = null;
	self.addFenceString = function () {
		if (!self.fenceString || self.fenceString.y > 2732) {
			self.fenceString = new FenceString();
			self.addChild(self.fenceString);
		}
	};
	self.moveFences = function () {
		if (self.fenceString) {
			self.fenceString.y += 2; // Synchronize with the speed of grass
			if (self.fenceString.y > 2732) {
				self.fenceString.destroy();
				self.fenceString = null;
			}
		}
	};
});
// FenceString class
var FenceString = Container.expand(function () {
	var self = Container.call(this);
	self.y = -139.08; // Start just above the top edge
	var fenceWidth = LK.getAsset('fence', {}).width;
	for (var i = 0; i < Math.floor(2048 / fenceWidth); i++) {
		var fence = new Fence();
		fence.setPosition(i * fenceWidth, 0);
		self.addChild(fence);
	}
});
// Fence class
var Fence = Container.expand(function () {
	var self = Container.call(this);
	var fenceGraphics = self.attachAsset('fence', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.setPosition = function (x, y) {
		self.x = x;
		self.y = y;
	};
});

/**** 
* Initialize Game
****/
var game = new LK.Game({
	backgroundColor: 0xA7D397 // New background color
});

/**** 
* Game Code
****/
// Initialize grass layer and add it to the game
var grassLayer = game.addChild(new GrassLayer());
// Initialize fence layer and add it to the game
var fenceLayer = game.addChild(new FenceLayer());
// Initialize sheep array
// Sheep asset
// Shepherd dog asset
var sheepArray = [];
// Create 20 sheep and add them to the game and sheepArray
for (var i = 0; i < 20; i++) {
	var sheep = new Sheep();
	sheep.x = 300 + Math.random() * (2048 - 600);
	sheep.y = 300 + Math.random() * (2732 - 600);
	game.addChild(sheep);
	sheepArray.push(sheep);
}
// Create shepherd dog and add it to the game
var shepherdDog = new Dog();
shepherdDog.x = 1024; // Start in the middle of the game area
shepherdDog.y = 1366;
game.addChild(shepherdDog);
// Event listener for touch move to move the shepherd dog and handle direction
game.on('move', function (obj) {
	var pos = obj.event.getLocalPosition(game);
	shepherdDog.move(pos, shepherdDog.lastPos);
	shepherdDog.lastPos = pos; // Update the last position
});
// Main game tick event
var baaInstance = game.addChild(new Baa());
LK.setInterval(function () {
	for (var i = 0; i < 3; i++) {
		var randomSheepIndex = Math.floor(Math.random() * sheepArray.length);
		var randomSheep = sheepArray[randomSheepIndex];
		baaInstance.show(randomSheep);
	}
}, 1000);
// Add logic to create and move fence strings
LK.setInterval(function () {
	fenceLayer.addFenceString();
}, Math.random() * 3000 + 2000); // Random time between 2 and 5 seconds
LK.on('tick', function () {
	fenceLayer.moveFences();
});
LK.on('tick', function () {
	// Move each sheep, handle collisions, update Baa position, move grass instances, and move stones
	baaInstance.tick();
	grassLayer.moveGrass();
	grassLayer.moveStones(); // Move the stones
	for (var i = 0; i < sheepArray.length; i++) {
		var sheep = sheepArray[i];
		sheep.move();
		sheep.avoidWalls();
		sheep.avoidDog(shepherdDog, shepherdDog.targetPosition);
		sheep.avoidSheep(sheepArray, grassLayer.stoneInstances);
	}
});
// Ensure the game is touchscreen compatible
game.on('down', function (obj) {
	var pos = obj.event.getLocalPosition(game);
	shepherdDog.setTargetPosition(pos);
	shepherdDog.move(pos, shepherdDog.lastPos);
	shepherdDog.lastPos = pos; // Update the last position
});
game.on('up', function (obj) {
	var pos = obj.event.getLocalPosition(game);
	shepherdDog.setTargetPosition(pos);
});

===================================================================
--- original.js
+++ change.js
@@ -235,43 +235,39 @@
 		}
 	};
 	self.resetPosition(); // Initialize position
 });
-// FenceLine class
-var FenceLine = Container.expand(function () {
+// FenceLayer class
+var FenceLayer = Container.expand(function () {
 	var self = Container.call(this);
-	self.fences = [];
-	self.active = false;
-	self.speed = Grass.prototype.speed; // Synchronize with grass speed
-	self.init = function () {
-		var fenceWidth = LK.getAsset('fence', {}).width;
-		var totalFenceWidth = fenceWidth * Math.floor(2048 / fenceWidth);
-		var spaceWidth = 2048 - totalFenceWidth;
-		var spaceIndex = Math.floor(2048 / fenceWidth / 2);
-		for (var i = 0; i < spaceIndex * 2 + 1; i++) {
-			if (i !== spaceIndex && i !== spaceIndex - 1 && i !== spaceIndex + 1) {
-				var fence = new Fence();
-				var positionX = i * fenceWidth + spaceWidth / 2;
-				fence.setPosition(positionX, -fence.height);
-				self.addChild(fence);
-				self.fences.push(fence);
-			}
+	self.fenceString = null;
+	self.addFenceString = function () {
+		if (!self.fenceString || self.fenceString.y > 2732) {
+			self.fenceString = new FenceString();
+			self.addChild(self.fenceString);
 		}
-		self.active = true;
 	};
-	self.move = function () {
-		if (self.active) {
-			for (var i = 0; i < self.fences.length; i++) {
-				self.fences[i].y += self.speed;
-				if (self.fences[i].y > 2732) {
-					self.active = false;
-					self.destroy();
-				}
+	self.moveFences = function () {
+		if (self.fenceString) {
+			self.fenceString.y += 2; // Synchronize with the speed of grass
+			if (self.fenceString.y > 2732) {
+				self.fenceString.destroy();
+				self.fenceString = null;
 			}
 		}
 	};
-	self.init();
 });
+// FenceString class
+var FenceString = Container.expand(function () {
+	var self = Container.call(this);
+	self.y = -139.08; // Start just above the top edge
+	var fenceWidth = LK.getAsset('fence', {}).width;
+	for (var i = 0; i < Math.floor(2048 / fenceWidth); i++) {
+		var fence = new Fence();
+		fence.setPosition(i * fenceWidth, 0);
+		self.addChild(fence);
+	}
+});
 // Fence class
 var Fence = Container.expand(function () {
 	var self = Container.call(this);
 	var fenceGraphics = self.attachAsset('fence', {
@@ -281,20 +277,8 @@
 	self.setPosition = function (x, y) {
 		self.x = x;
 		self.y = y;
 	};
-	self.resetPosition = function () {
-		self.x = Math.random() * 2048;
-		self.y = -self.height;
-	};
-	self.move = function () {
-		self.y += 2; // Move down at a constant speed
-		if (self.y > 2732) {
-			// If fence is below the screen
-			self.resetPosition(); // Reset to the top
-		}
-	};
-	self.resetPosition(); // Initialize position
 });
 
 /**** 
 * Initialize Game
@@ -307,8 +291,10 @@
 * Game Code
 ****/
 // Initialize grass layer and add it to the game
 var grassLayer = game.addChild(new GrassLayer());
+// Initialize fence layer and add it to the game
+var fenceLayer = game.addChild(new FenceLayer());
 // Initialize sheep array
 // Sheep asset
 // Shepherd dog asset
 var sheepArray = [];
@@ -332,40 +318,21 @@
 	shepherdDog.lastPos = pos; // Update the last position
 });
 // Main game tick event
 var baaInstance = game.addChild(new Baa());
-var fenceLineInstance = null;
 LK.setInterval(function () {
 	for (var i = 0; i < 3; i++) {
 		var randomSheepIndex = Math.floor(Math.random() * sheepArray.length);
 		var randomSheep = sheepArray[randomSheepIndex];
 		baaInstance.show(randomSheep);
 	}
-	// Randomly decide if a new fence line should appear
-	if (!fenceLineInstance && Math.random() < 0.1) {
-		// 10% chance every second
-		fenceLineInstance = new FenceLine();
-		game.addChild(fenceLineInstance);
-	}
 }, 1000);
+// Add logic to create and move fence strings
+LK.setInterval(function () {
+	fenceLayer.addFenceString();
+}, Math.random() * 3000 + 2000); // Random time between 2 and 5 seconds
 LK.on('tick', function () {
-	// Move each sheep, handle collisions, update Baa position, move grass instances, and move stones
-	baaInstance.tick();
-	grassLayer.moveGrass();
-	grassLayer.moveStones(); // Move the stones
-	if (fenceLineInstance) {
-		fenceLineInstance.move();
-		if (!fenceLineInstance.active) {
-			fenceLineInstance = null;
-		}
-	}
-	for (var i = 0; i < sheepArray.length; i++) {
-		var sheep = sheepArray[i];
-		sheep.move();
-		sheep.avoidWalls();
-		sheep.avoidDog(shepherdDog, shepherdDog.targetPosition);
-		sheep.avoidSheep(sheepArray, grassLayer.stoneInstances);
-	}
+	fenceLayer.moveFences();
 });
 LK.on('tick', function () {
 	// Move each sheep, handle collisions, update Baa position, move grass instances, and move stones
 	baaInstance.tick();