===================================================================
--- original.js
+++ change.js
@@ -5,193 +5,127 @@
 
 /**** 
 * Classes
 ****/ 
-var SoilPatch = Container.expand(function () {
+var Airplane = Container.expand(function () {
 	var self = Container.call(this);
-	var soilGraphics = self.attachAsset('soil', {
+	var airplaneGraphics = self.attachAsset('airplane', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	self.state = 'empty'; // 'empty', 'planted', 'growing', 'mature'
-	self.growthTimer = 0;
-	self.seedGraphics = null;
-	self.cropGraphics = null;
-	self.plant = function () {
-		if (self.state === 'empty') {
-			self.state = 'planted';
-			self.seedGraphics = self.attachAsset('seed', {
-				anchorX: 0.5,
-				anchorY: 0.5
-			});
-			self.growthTimer = 0;
-			LK.getSound('plant').play();
-			return true;
-		}
-		return false;
+	self.velocityY = 0;
+	self.gravity = 0.5;
+	self.jumpPower = -12;
+	self.speed = 4;
+	self.lastY = 0;
+	self.lastIntersecting1 = false;
+	self.lastIntersecting2 = false;
+	self.jump = function () {
+		self.velocityY = self.jumpPower;
+		LK.getSound('engine').play();
 	};
-	self.harvest = function () {
-		if (self.state === 'mature') {
-			self.state = 'empty';
-			if (self.cropGraphics) {
-				self.cropGraphics.destroy();
-				self.cropGraphics = null;
-			}
-			LK.getSound('harvest').play();
-			return true;
-		}
-		return false;
-	};
 	self.update = function () {
-		if (self.state === 'planted') {
-			self.growthTimer++;
-			if (self.growthTimer >= 180) {
-				// 3 seconds at 60fps
-				self.state = 'growing';
-				if (self.seedGraphics) {
-					self.seedGraphics.destroy();
-					self.seedGraphics = null;
-				}
-				self.cropGraphics = self.attachAsset('crop', {
-					anchorX: 0.5,
-					anchorY: 0.5
-				});
-			}
-		} else if (self.state === 'growing') {
-			self.growthTimer++;
-			if (self.growthTimer >= 360) {
-				// 6 seconds total
-				self.state = 'mature';
-				if (self.cropGraphics) {
-					self.cropGraphics.destroy();
-					self.cropGraphics = null;
-				}
-				self.cropGraphics = self.attachAsset('matureCrop', {
-					anchorX: 0.5,
-					anchorY: 0.5
-				});
-			}
+		self.lastY = self.y;
+		// Apply gravity
+		self.velocityY += self.gravity;
+		self.y += self.velocityY;
+		// Move forward
+		self.x += self.speed;
+		// Keep airplane within bounds
+		if (self.y < 50) {
+			self.y = 50;
+			self.velocityY = 0;
 		}
+		if (self.y > 2600) {
+			self.y = 2600;
+			self.velocityY = 0;
+		}
 	};
 	return self;
 });
-var Tractor = Container.expand(function () {
+var Tower = Container.expand(function () {
 	var self = Container.call(this);
-	var tractorGraphics = self.attachAsset('tractor', {
+	var towerGraphics = self.attachAsset('tower', {
 		anchorX: 0.5,
-		anchorY: 0.5
+		anchorY: 1.0
 	});
-	self.speed = 3;
-	self.targetX = 0;
-	self.targetY = 0;
-	self.isMoving = false;
-	self.moveToTarget = function () {
-		if (self.isMoving) {
-			var dx = self.targetX - self.x;
-			var dy = self.targetY - self.y;
-			var distance = Math.sqrt(dx * dx + dy * dy);
-			if (distance > 5) {
-				self.x += dx / distance * self.speed;
-				self.y += dy / distance * self.speed;
-				// Rotate tractor to face movement direction
-				tractorGraphics.rotation = Math.atan2(dy, dx) + Math.PI / 2;
-			} else {
-				self.isMoving = false;
-			}
-		}
-	};
-	self.update = function () {
-		self.moveToTarget();
-	};
 	return self;
 });
 
 /**** 
 * Initialize Game
 ****/ 
 var game = new LK.Game({
-	backgroundColor: 0x4CAF50
+	backgroundColor: 0x87CEEB
 });
 
 /**** 
 * Game Code
 ****/ 
-game.setBackgroundColor(0x8BC34A);
+game.setBackgroundColor(0x87CEEB);
 var scoreTxt = new Text2('Score: 0', {
 	size: 60,
-	fill: 0xFFFFFF
+	fill: 0x000000
 });
 scoreTxt.anchor.set(0.5, 0);
 LK.gui.top.addChild(scoreTxt);
-var tractor = game.addChild(new Tractor());
-tractor.x = 1024;
-tractor.y = 1366;
-var soilPatches = [];
-var farmWidth = 8;
-var farmHeight = 12;
-var patchSize = 80;
-var startX = 1024 - farmWidth * patchSize / 2;
-var startY = 400;
-// Create farm field
-for (var row = 0; row < farmHeight; row++) {
-	soilPatches[row] = [];
-	for (var col = 0; col < farmWidth; col++) {
-		var patch = new SoilPatch();
-		patch.x = startX + col * patchSize;
-		patch.y = startY + row * patchSize;
-		soilPatches[row][col] = patch;
-		game.addChild(patch);
-	}
-}
-var dragNode = null;
+var airplane = game.addChild(new Airplane());
+airplane.x = 200;
+airplane.y = 1366;
+var tower1 = game.addChild(new Tower());
+tower1.x = 800;
+tower1.y = 2732;
+var tower2 = game.addChild(new Tower());
+tower2.x = 1400;
+tower2.y = 2732;
 var score = 0;
+var gameSpeed = 2;
 function updateScore() {
 	scoreTxt.setText('Score: ' + score);
 }
-function checkTractorCollisions() {
-	for (var row = 0; row < farmHeight; row++) {
-		for (var col = 0; col < farmWidth; col++) {
-			var patch = soilPatches[row][col];
-			if (tractor.intersects(patch)) {
-				if (patch.state === 'empty') {
-					if (patch.plant()) {
-						score += 10;
-						updateScore();
-					}
-				} else if (patch.state === 'mature') {
-					if (patch.harvest()) {
-						score += 25;
-						updateScore();
-					}
-				}
-			}
-		}
+function checkCollisions() {
+	// Check tower collisions
+	var currentIntersecting1 = airplane.intersects(tower1);
+	var currentIntersecting2 = airplane.intersects(tower2);
+	if (!airplane.lastIntersecting1 && currentIntersecting1 || !airplane.lastIntersecting2 && currentIntersecting2) {
+		// Just hit a tower
+		LK.getSound('crash').play();
+		LK.effects.flashScreen(0xff0000, 1000);
+		LK.showGameOver();
 	}
+	airplane.lastIntersecting1 = currentIntersecting1;
+	airplane.lastIntersecting2 = currentIntersecting2;
+	// Check if airplane passed towers for scoring
+	if (airplane.lastX < tower1.x && airplane.x >= tower1.x) {
+		score += 10;
+		updateScore();
+	}
+	if (airplane.lastX < tower2.x && airplane.x >= tower2.x) {
+		score += 10;
+		updateScore();
+	}
 }
 game.down = function (x, y, obj) {
-	tractor.targetX = x;
-	tractor.targetY = y;
-	tractor.isMoving = true;
-	dragNode = tractor;
+	airplane.jump();
 };
-game.move = function (x, y, obj) {
-	if (dragNode) {
-		tractor.targetX = x;
-		tractor.targetY = y;
-		tractor.isMoving = true;
-	}
-};
-game.up = function (x, y, obj) {
-	dragNode = null;
-};
 game.update = function () {
-	checkTractorCollisions();
-	// Keep tractor within game bounds
-	if (tractor.x < 50) tractor.x = 50;
-	if (tractor.x > 1998) tractor.x = 1998;
-	if (tractor.y < 50) tractor.y = 50;
-	if (tractor.y > 2682) tractor.y = 2682;
-	// Check win condition
-	if (score >= 500) {
+	airplane.lastX = airplane.x;
+	// Move towers left for side-scrolling effect
+	tower1.x -= gameSpeed;
+	tower2.x -= gameSpeed;
+	// Reset tower positions when they go off-screen
+	if (tower1.x < -100) {
+		tower1.x = 2148;
+	}
+	if (tower2.x < -100) {
+		tower2.x = 2148;
+	}
+	checkCollisions();
+	// Check if airplane goes off screen
+	if (airplane.x > 2148) {
+		airplane.x = 200;
+	}
+	// Win condition
+	if (score >= 100) {
 		LK.showYouWin();
 	}
 };
\ No newline at end of file