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

/**** 
* Classes
****/ 
var Motorcycle = Container.expand(function () {
	var self = Container.call(this);
	var motorcycleGraphics = self.attachAsset('motorcycle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 3;
	self.speed = 0;
	self.maxSpeed = 8;
	self.update = function () {
		if (gameStarted) {
			// Gradually increase speed
			if (self.speed < self.maxSpeed) {
				self.speed += 0.02;
			}
			// Move forward (simulate road movement)
			roadOffset += self.speed;
		}
	};
	self.takeDamage = function () {
		self.health--;
		// Flash red when hit
		LK.effects.flashObject(self, 0xff0000, 500);
		LK.getSound('hit').play();
		if (self.health <= 0) {
			LK.showGameOver();
		}
	};
	return self;
});
var Projectile = Container.expand(function () {
	var self = Container.call(this);
	var projectileGraphics = self.attachAsset('projectile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.gravity = 0;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
		self.velocityY += self.gravity;
		// Rotate projectile based on velocity
		self.rotation += 0.1;
	};
	return self;
});
var RoadsideObject = Container.expand(function (type) {
	var self = Container.call(this);
	self.objectType = type || 'person';
	var objectGraphics = self.attachAsset(self.objectType, {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.throwTimer = 0;
	self.throwDelay = Math.random() * 180 + 60; // Random delay between throws
	self.isLeftSide = true;
	self.originalY = 0; // Store original Y position for movement animation
	self.update = function () {
		// Only people throw objects
		if (self.objectType === 'person') {
			self.throwTimer++;
			if (self.throwTimer >= self.throwDelay && gameStarted) {
				self.throwObject();
				self.throwTimer = 0;
				self.throwDelay = Math.random() * 120 + 400000000; // Next throw delay
			}
		}
		// Move object backward to simulate forward motion
		if (gameStarted && motorcycle.speed > 0) {
			self.y += motorcycle.speed * 3;
			// Calculate current perspective for this object
			var currentDistance = Math.max(0, roadY - self.y);
			var perspective = Math.max(0.01, Math.min(1, 1 - currentDistance / horizonDistance));
			var roadWidth = 2048 * perspective;
			// Update object position and scale based on perspective
			if (self.isLeftSide) {
				self.x = 1024 - roadWidth / 2 - 120 * perspective;
			} else {
				self.x = 1024 + roadWidth / 2 + 120 * perspective;
			}
			self.scaleX = perspective;
			self.scaleY = perspective;
			// Reset object position when it goes past the bottom
			if (self.y > roadY + 200) {
				self.y = self.originalY;
				// Reset scale for new cycle
				var resetDistance = roadY - self.originalY;
				var resetPerspective = Math.max(0.01, Math.min(1, 1 - resetDistance / horizonDistance));
				self.scaleX = resetPerspective;
				self.scaleY = resetPerspective;
			}
		}
	};
	self.throwObject = function () {
		// Only throw if there are less than 3 projectiles
		if (projectiles.length >= 3) {
			return; // Don't throw if we already have 3 or more projectiles
		}
		var projectile = new Projectile();
		projectile.x = self.x;
		projectile.y = self.y - 20;
		// Calculate trajectory toward motorcycle position on road
		var targetX = motorcycle.x + (Math.random() - 0.5) * 200; // Target motorcycle with some variance
		var targetY = roadY;
		projectile.velocityX = (targetX - projectile.x) * 0.015;
		projectile.velocityY = (targetY - projectile.y) * 0.015;
		projectile.gravity = 0.2;
		projectiles.push(projectile);
		game.addChild(projectile);
		LK.getSound('throw').play();
	};
	return self;
});
var Truck = Container.expand(function () {
	var self = Container.call(this);
	var truckGraphics = self.attachAsset('truck', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -6;
	self.active = true;
	self.update = function () {
		if (self.active) {
			self.y += self.speed; // Move toward horizon (upward on screen)
			// Calculate perspective based on distance to horizon
			var distanceToHorizon = roadY - horizonY; // Total distance from bottom to horizon
			var currentDistance = roadY - self.y; // Current distance from bottom
			var perspective = Math.max(0, 1 - currentDistance / distanceToHorizon); // Perspective ratio
			// Move horizontally toward center point (1024) as truck approaches horizon
			var centerX = 1024;
			var horizontalConvergence = (centerX - self.x) * 0.02; // Gradual convergence
			self.x += horizontalConvergence;
			// Scale trucks according to perspective
			self.scaleX = perspective;
			self.scaleY = perspective;
			// Deactivate truck when it reaches horizon
			if (self.y <= horizonY) {
				self.active = false;
				self.visible = false;
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87ceeb
});

/**** 
* Game Code
****/ 
var roadY = 2732; // Position road at very bottom of screen
var horizonY = 1366; // Horizon at middle height of screen (2732/2)
var roadOffset = 0;
var gameStarted = false;
var trucksCleared = false;
// Create perspective road using segments
var roadSegments = [];
var roadLines = [];
var leftSidewalks = [];
var rightSidewalks = [];
// Create road segments that form triangular perspective from full width to horizon
var totalSegments = 60;
var horizonDistance = roadY - horizonY; // Distance from bottom to horizon
for (var i = 0; i < totalSegments; i++) {
	var distance = i / totalSegments * horizonDistance; // Distance from bottom
	var yPosition = roadY - distance;
	var perspective = 1 - distance / horizonDistance; // Linear perspective to horizon
	var roadWidth = 2048 * perspective; // Road width from full screen width to narrow at horizon
	var segmentHeight = horizonDistance / totalSegments * 1.2;
	if (yPosition >= horizonY) {
		// Only render segments from bottom to horizon
		// Road segment
		var roadSeg = game.addChild(LK.getAsset('road_segment', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 1024,
			y: yPosition,
			scaleX: roadWidth / 100,
			scaleY: segmentHeight / 50
		}));
		roadSegments.push(roadSeg);
		// Center line segments
		if (i % 4 == 0) {
			// Every 4th segment for dashed line effect
			var centerLine = game.addChild(LK.getAsset('road_line', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: 1024,
				y: yPosition,
				scaleX: perspective * 2,
				scaleY: perspective * 2
			}));
			roadLines.push(centerLine);
		}
		// Left sidewalk
		var leftSidewalk = game.addChild(LK.getAsset('sidewalk_segment', {
			anchorX: 1,
			anchorY: 0.5,
			x: 1024 - roadWidth / 2 - 80 * perspective,
			y: yPosition,
			scaleX: perspective * 1.5,
			scaleY: segmentHeight / 40
		}));
		leftSidewalks.push(leftSidewalk);
		// Right sidewalk
		var rightSidewalk = game.addChild(LK.getAsset('sidewalk_segment', {
			anchorX: 0,
			anchorY: 0.5,
			x: 1024 + roadWidth / 2 + 80 * perspective,
			y: yPosition,
			scaleX: perspective * 1.5,
			scaleY: segmentHeight / 40
		}));
		rightSidewalks.push(rightSidewalk);
	}
}
// Create trucks at bottom of screen blocking the path
var trucks = [];
var truck1 = game.addChild(new Truck());
truck1.x = 900;
truck1.y = roadY;
var truck2 = game.addChild(new Truck());
truck2.x = 1150;
truck2.y = roadY;
trucks.push(truck1, truck2);
// Create motorcycle at bottom of screen behind trucks
var motorcycle = game.addChild(new Motorcycle());
motorcycle.x = 1024;
motorcycle.y = roadY - 50; // Positioned on road at bottom of screen
// Create roadside objects (people, trees, signs)
var roadsideObjects = [];
var projectiles = [];
var objectTypes = ['person', 'tree', 'sign'];
// Left side objects positioned along the perspective sidewalk
for (var i = 0; i < 30; i++) {
	var objectType = objectTypes[i % 3]; // Cycle through person, tree, sign
	var leftObject = game.addChild(new RoadsideObject(objectType));
	var distance = i / 30 * horizonDistance;
	var yPos = roadY - distance;
	var perspective = 1 - distance / horizonDistance;
	var roadWidth = 2048 * perspective;
	if (yPos >= horizonY) {
		leftObject.x = 1024 - roadWidth / 2 - 120 * perspective;
		leftObject.y = yPos;
		leftObject.originalY = yPos;
		leftObject.scaleX = perspective;
		leftObject.scaleY = perspective;
		leftObject.isLeftSide = true;
		roadsideObjects.push(leftObject);
	}
}
// Right side objects positioned along the perspective sidewalk
for (var i = 0; i < 30; i++) {
	var objectType = objectTypes[i % 3]; // Cycle through person, tree, sign
	var rightObject = game.addChild(new RoadsideObject(objectType));
	var distance = i / 30 * horizonDistance;
	var yPos = roadY - distance;
	var perspective = 1 - distance / horizonDistance;
	var roadWidth = 2048 * perspective;
	if (yPos >= horizonY) {
		rightObject.x = 1024 + roadWidth / 2 + 120 * perspective;
		rightObject.y = yPos;
		rightObject.originalY = yPos;
		rightObject.scaleX = perspective;
		rightObject.scaleY = perspective;
		rightObject.isLeftSide = false;
		roadsideObjects.push(rightObject);
	}
}
// Score display
var scoreTxt = new Text2('Distance: 0m', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Health display
var healthTxt = new Text2('Health: 3', {
	size: 60,
	fill: 0xFF0000
});
healthTxt.anchor.set(0, 0);
healthTxt.x = 50;
healthTxt.y = 50;
LK.gui.topRight.addChild(healthTxt);
var dragStartX = 0;
var isDragging = false;
// Touch controls
game.down = function (x, y, obj) {
	if (gameStarted) {
		isDragging = true;
		dragStartX = x;
	}
};
game.move = function (x, y, obj) {
	if (isDragging && gameStarted) {
		var deltaX = x - dragStartX;
		var newX = motorcycle.x + deltaX * 0.5;
		// Keep motorcycle on perspective road at bottom (full width bounds)
		var roadLeft = 200; // Road width at motorcycle position (bottom of screen)
		var roadRight = 1848; // Almost full screen width
		if (newX >= roadLeft && newX <= roadRight) {
			motorcycle.x = newX;
		}
		dragStartX = x;
	}
};
game.up = function (x, y, obj) {
	isDragging = false;
};
game.update = function () {
	// Check if trucks have cleared
	if (!trucksCleared) {
		var allTrucksCleared = true;
		for (var i = 0; i < trucks.length; i++) {
			if (trucks[i].y > roadY - 300) {
				// Start immediately when trucks move forward significantly
				allTrucksCleared = false;
				break;
			}
		}
		if (allTrucksCleared) {
			trucksCleared = true;
			gameStarted = true;
		}
	}
	// Animate individual road blocks advancing from horizon
	if (gameStarted && motorcycle.speed > 0) {
		var roadMovement = motorcycle.speed * 3;
		// Move individual road segments from horizon toward bottom
		for (var i = 0; i < roadSegments.length; i++) {
			roadSegments[i].y += roadMovement;
			// Calculate current perspective for this segment
			var currentDistance = Math.max(0, roadY - roadSegments[i].y);
			var perspective = Math.max(0.01, Math.min(1, 1 - currentDistance / horizonDistance));
			var roadWidth = 2048 * perspective;
			// Update segment scaling based on current position
			roadSegments[i].scaleX = roadWidth / 100;
			roadSegments[i].scaleY = horizonDistance / totalSegments * 1.2 / 50 * perspective;
			// Reset segments that have passed the bottom back to horizon with proper spacing
			if (roadSegments[i].y > roadY + 100) {
				var segmentSpacing = horizonDistance / totalSegments;
				roadSegments[i].y = horizonY + i * segmentSpacing / totalSegments;
				roadSegments[i].scaleX = 0.01; // Very small at horizon
				roadSegments[i].scaleY = 0.01;
			}
		}
		// Move individual road lines from horizon toward bottom
		for (var i = 0; i < roadLines.length; i++) {
			roadLines[i].y += roadMovement;
			// Calculate current perspective for this line
			var currentDistance = Math.max(0, roadY - roadLines[i].y);
			var perspective = Math.max(0.01, Math.min(1, 1 - currentDistance / horizonDistance));
			// Update line scaling based on current position
			roadLines[i].scaleX = perspective * 3;
			roadLines[i].scaleY = perspective * 4;
			// Reset lines that have passed the bottom back to horizon with proper spacing
			if (roadLines[i].y > roadY + 100) {
				var lineSpacing = horizonDistance / totalSegments * 4; // Lines are spaced every 4 segments
				var lineIndex = roadLines.indexOf(roadLines[i]);
				roadLines[i].y = horizonY + lineIndex * lineSpacing / 15; // Distribute evenly
				roadLines[i].scaleX = 0.01; // Very small at horizon
				roadLines[i].scaleY = 0.01;
			}
		}
		// Move individual sidewalk blocks from horizon toward bottom
		for (var i = 0; i < leftSidewalks.length; i++) {
			leftSidewalks[i].y += roadMovement;
			rightSidewalks[i].y += roadMovement;
			// Calculate current perspective for sidewalks
			var currentDistance = Math.max(0, roadY - leftSidewalks[i].y);
			var perspective = Math.max(0.01, Math.min(1, 1 - currentDistance / horizonDistance));
			var roadWidth = 2048 * perspective;
			var segmentHeight = horizonDistance / totalSegments * 1.2 * perspective;
			// Update sidewalk positions and scaling based on current position
			leftSidewalks[i].x = 1024 - roadWidth / 2 - 80 * perspective;
			leftSidewalks[i].scaleX = perspective * 2;
			leftSidewalks[i].scaleY = segmentHeight / 40;
			rightSidewalks[i].x = 1024 + roadWidth / 2 + 80 * perspective;
			rightSidewalks[i].scaleX = perspective * 2;
			rightSidewalks[i].scaleY = segmentHeight / 40;
			// Reset sidewalks that have passed the bottom back to horizon with proper spacing
			if (leftSidewalks[i].y > roadY + 100) {
				var sidewalkSpacing = horizonDistance / totalSegments;
				leftSidewalks[i].y = horizonY + i * sidewalkSpacing / totalSegments;
				rightSidewalks[i].y = horizonY + i * sidewalkSpacing / totalSegments;
				// Reset to horizon positions with minimal scale
				leftSidewalks[i].x = 1024 - 1;
				rightSidewalks[i].x = 1024 + 1;
				leftSidewalks[i].scaleX = 0.01;
				rightSidewalks[i].scaleX = 0.01;
				leftSidewalks[i].scaleY = 0.01;
				rightSidewalks[i].scaleY = 0.01;
			}
		}
	}
	// Update score
	if (gameStarted) {
		var distance = Math.floor(roadOffset / 10);
		scoreTxt.setText('Distance: ' + distance + 'm');
		LK.setScore(distance);
	}
	// Update health display
	healthTxt.setText('Health: ' + motorcycle.health);
	// Check for motorcycle flip when crossing center line for perspective effect
	if (gameStarted) {
		if (motorcycle.lastX === undefined) {
			motorcycle.lastX = motorcycle.x;
			motorcycle.isFlipping = false;
		}
		// Check if motorcycle crossed from left half to right half or vice versa
		var screenCenter = 1024;
		var crossedToRight = motorcycle.lastX < screenCenter && motorcycle.x >= screenCenter;
		var crossedToLeft = motorcycle.lastX > screenCenter && motorcycle.x <= screenCenter;
		if ((crossedToRight || crossedToLeft) && !motorcycle.isFlipping) {
			motorcycle.isFlipping = true;
			// Flip the motorcycle by animating scaleX
			tween(motorcycle, {
				scaleX: -motorcycle.scaleX
			}, {
				duration: 200,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					motorcycle.isFlipping = false;
				}
			});
		}
		motorcycle.lastX = motorcycle.x;
	}
	// Check projectile collisions
	for (var i = projectiles.length - 1; i >= 0; i--) {
		var projectile = projectiles[i];
		// Remove off-screen projectiles
		if (projectile.x < -100 || projectile.x > 2148 || projectile.y > 2732 + 100) {
			projectile.destroy();
			projectiles.splice(i, 1);
			continue;
		}
		// Check collision with motorcycle
		if (gameStarted && projectile.intersects(motorcycle)) {
			motorcycle.takeDamage();
			projectile.destroy();
			projectiles.splice(i, 1);
			continue;
		}
		// Check if projectile hits road (bounce or break)
		if (projectile.y >= roadY - 20 && projectile.velocityY > 0) {
			projectile.destroy();
			projectiles.splice(i, 1);
		}
	}
	// Increase difficulty over time
	if (gameStarted && LK.ticks % 600 == 0) {
		// Every 10 seconds
		// Increase throw frequency for people objects
		for (var j = 0; j < roadsideObjects.length; j++) {
			if (roadsideObjects[j].objectType === 'person') {
				roadsideObjects[j].throwDelay = Math.max(20, roadsideObjects[j].throwDelay - 5);
			}
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -416,8 +416,33 @@
 		LK.setScore(distance);
 	}
 	// Update health display
 	healthTxt.setText('Health: ' + motorcycle.health);
+	// Check for motorcycle flip when crossing center line for perspective effect
+	if (gameStarted) {
+		if (motorcycle.lastX === undefined) {
+			motorcycle.lastX = motorcycle.x;
+			motorcycle.isFlipping = false;
+		}
+		// Check if motorcycle crossed from left half to right half or vice versa
+		var screenCenter = 1024;
+		var crossedToRight = motorcycle.lastX < screenCenter && motorcycle.x >= screenCenter;
+		var crossedToLeft = motorcycle.lastX > screenCenter && motorcycle.x <= screenCenter;
+		if ((crossedToRight || crossedToLeft) && !motorcycle.isFlipping) {
+			motorcycle.isFlipping = true;
+			// Flip the motorcycle by animating scaleX
+			tween(motorcycle, {
+				scaleX: -motorcycle.scaleX
+			}, {
+				duration: 200,
+				easing: tween.easeOut,
+				onFinish: function onFinish() {
+					motorcycle.isFlipping = false;
+				}
+			});
+		}
+		motorcycle.lastX = motorcycle.x;
+	}
 	// Check projectile collisions
 	for (var i = projectiles.length - 1; i >= 0; i--) {
 		var projectile = projectiles[i];
 		// Remove off-screen projectiles