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

/**** 
* Classes
****/ 
var Cloud = Container.expand(function () {
	var self = Container.call(this);
	var cloudGraphics = self.attachAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.baseSpeed = Math.random() * 3 + 2; // Random base speed between 2 and 5
	self.speed = self.baseSpeed; // Initialize speed
	self.update = function () {
		if (!hasGameStopped) {
			// Update speed based on current game speed
			self.speed = self.baseSpeed * (gameSpeed / 6); // Scale with game speed (6 is initial speed)
			self.x -= self.speed;
		}
	};
	return self;
});
var Dinosaur = Container.expand(function () {
	var self = Container.call(this);
	var dinoGraphics = self.attachAsset('dino', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.hitbox = self.attachAsset('dino-hitbox', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.velocityY = 0;
	self.gravity = 1;
	self.jumpPower = -30;
	self.isGrounded = false;
	self.groundY = 0;
	self.hasCollided = false;
	// Jump is now handled by the input system
	self.update = function () {
		// Apply gravity
		self.velocityY += self.gravity;
		self.y += self.velocityY;
		// If collided, add horizontal movement to simulate being thrown
		if (self.hasCollided) {
			self.x += 3; // Move right when thrown
		}
		// Check ground collision
		if (self.y >= self.groundY && !self.hasCollided) {
			self.y = self.groundY;
			self.velocityY = 0;
			self.isGrounded = true;
		}
		// Check if fallen off screen (game over condition) - only trigger if collided
		if (self.y > 2732 + 100 && self.hasCollided) {
			LK.showGameOver();
		}
	};
	return self;
});
var FlyingObstacle = Container.expand(function () {
	var self = Container.call(this);
	var flyingGraphics = self.attachAsset('flying_obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.hitbox = self.attachAsset('flying_obstacle-hitbox', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		if (!hasGameStopped) {
			self.x += -gameSpeed * 2 * 1.5;
		}
	};
	return self;
});
var GroundTile = Container.expand(function () {
	var self = Container.call(this);
	var groundGraphics = self.attachAsset('ground', {
		anchorX: 0,
		anchorY: 0
	});
	self.update = function () {
		if (!hasGameStopped) {
			self.x += -gameSpeed * 1.5;
		}
	};
	return self;
});
var Obstacle = Container.expand(function (size) {
	var self = Container.call(this);
	// Determine which asset to use based on size parameter
	var assetId = size === 'large' ? 'obstacle_large' : 'obstacle_small';
	var obstacleGraphics = self.attachAsset(assetId, {
		anchorX: 0.5,
		anchorY: 1.0
	});
	// Add hitbox for obstacles
	if (size === 'large') {
		self.hitbox = self.attachAsset('obstacle_large-hitbox', {
			anchorX: 0.5,
			anchorY: 1.0
		});
	} else if (size === 'small') {
		self.hitbox = self.attachAsset('obstacle_small-hitbox', {
			anchorX: 0.5,
			anchorY: 1.0
		});
	}
	self.size = size;
	self.update = function () {
		if (!hasGameStopped) {
			self.x += -gameSpeed * 1.5;
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var dinosaur;
var groundTiles = [];
var obstacles = [];
var flyingObstacle = null;
var flyingObstacleSpawnTimer = 0;
var flyingObstacleHeight = 2040; // Just above ground obstacles (flying obstacle height is 60)
var groundY = 2732 - 120; // Ground level - position ground tiles so they fill to bottom of screen
var gameSpeed = 6;
var distanceScore = 0;
var gameSpeedBeforeCollision = 6;
var hasGameStopped = false;
var obstacleSpawnTimer = 0;
var minObstacleSpacing = 600;
var maxObstacles = 3;
var clouds = [];
var cloudSpawnTimer = 0;
// Create score display
var scoreTxt = new Text2('0', {
	size: 80,
	fill: 0x333333
});
scoreTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(scoreTxt);
// Create dinosaur
dinosaur = game.addChild(new Dinosaur());
dinosaur.x = 400;
dinosaur.y = groundY;
dinosaur.groundY = groundY;
// Create initial ground tiles
function createGroundTile(x) {
	var tile = new GroundTile();
	tile.x = x;
	tile.y = groundY;
	return tile;
}
// Create obstacle function
function createObstacle(x) {
	var sizes = ['small', 'large'];
	var randomSize = sizes[Math.floor(Math.random() * sizes.length)];
	var obstacle = new Obstacle(randomSize);
	obstacle.x = x;
	obstacle.y = groundY + 10;
	return obstacle;
}
// Create flying obstacle function
function createFlyingObstacle(x) {
	var obstacle = new FlyingObstacle();
	obstacle.x = x;
	obstacle.y = flyingObstacleHeight + 10;
	return obstacle;
}
// Create cloud function
function createCloud(x, y) {
	var cloud = new Cloud();
	cloud.x = x;
	cloud.y = y;
	var randomScale = 0.6 + Math.random() * 0.8; // Random scale between 0.6 and 1.4
	cloud.scaleX = randomScale;
	cloud.scaleY = randomScale;
	return cloud;
}
// Create initial ground tiles to cover screen width plus extra for scrolling
for (var i = 0; i < 15; i++) {
	var tile = game.addChild(createGroundTile(i * 200));
	groundTiles.push(tile);
}
// Create initial background clouds
for (var c = 0; c < 8; c++) {
	var cloudX = Math.random() * (2048 + 400) - 200; // Spread across screen width
	var cloudY = Math.random() * 800 + 200; // Upper portion of screen
	var cloud = game.addChild(createCloud(cloudX, cloudY));
	clouds.push(cloud);
}
// Play main theme music
LK.playMusic('main-theme');
// Override LK.showGameOver - defeat sound now plays on collision
var originalShowGameOver = LK.showGameOver;
LK.showGameOver = function () {
	originalShowGameOver.call(this);
};
// Game input handling - variable jump system
var isHolding = false;
var jumpHoldTime = 0;
var maxJumpHoldTime = 20; // Maximum frames to hold for full jump
var minJumpPower = -20; // Minimum jump power for taps
var maxJumpPower = -35; // Maximum jump power for full hold
game.down = function (x, y, obj) {
	if (dinosaur.isGrounded && !hasGameStopped) {
		isHolding = true;
		jumpHoldTime = 0;
		// Start with minimum jump
		dinosaur.velocityY = minJumpPower;
		dinosaur.isGrounded = false;
		LK.getSound('jump').play();
	}
};
game.up = function (x, y, obj) {
	isHolding = false;
};
// Main game update loop
game.update = function () {
	// Handle variable jump height
	if (isHolding && !dinosaur.isGrounded && jumpHoldTime < maxJumpHoldTime && !hasGameStopped) {
		jumpHoldTime++;
		// Apply additional upward force while holding
		var holdForce = -0.8; // Additional upward force per frame
		dinosaur.velocityY += holdForce;
		// Ensure we don't exceed maximum jump power
		if (dinosaur.velocityY < maxJumpPower) {
			dinosaur.velocityY = maxJumpPower;
		}
	}
	// Only update score and spawn objects if game hasn't stopped
	if (!hasGameStopped) {
		// Update distance score
		distanceScore += gameSpeed;
		var displayScore = Math.floor(distanceScore / 10);
		LK.setScore(displayScore);
		scoreTxt.setText(displayScore);
	}
	// Manage ground tiles
	for (var i = groundTiles.length - 1; i >= 0; i--) {
		var tile = groundTiles[i];
		// Remove tiles that have scrolled off screen
		if (tile.x < -250) {
			tile.destroy();
			groundTiles.splice(i, 1);
		}
	}
	// Add new ground tiles as needed
	var lastTile = groundTiles[groundTiles.length - 1];
	if (lastTile && lastTile.x + 200 < 2048 + 200) {
		var newTile = game.addChild(createGroundTile(lastTile.x + 200));
		groundTiles.push(newTile);
	}
	// Manage obstacles
	for (var k = obstacles.length - 1; k >= 0; k--) {
		var obstacle = obstacles[k];
		// Remove obstacles that have scrolled off screen
		if (obstacle.x < -200) {
			obstacle.destroy();
			obstacles.splice(k, 1);
		}
	}
	// Manage flying obstacle
	if (flyingObstacle) {
		// Remove flying obstacle if it's off screen
		if (flyingObstacle.x < -200) {
			flyingObstacle.destroy();
			flyingObstacle = null;
		}
	}
	// Spawn flying obstacle
	if (!hasGameStopped) {
		flyingObstacleSpawnTimer++;
	}
	if (!hasGameStopped && !flyingObstacle && flyingObstacleSpawnTimer > 300) {
		// Spawn every 5 seconds
		flyingObstacle = game.addChild(createFlyingObstacle(2048 + 100));
		flyingObstacleSpawnTimer = 0;
	}
	// Spawn new obstacles
	if (!hasGameStopped) {
		obstacleSpawnTimer++;
		var baseSpawnTime = 120; // Base spawn time (2 seconds at 60fps)
		var spawnVariation = 120; // ±2 second variation for more varied spacing
		var currentSpawnTime = baseSpawnTime + Math.floor(Math.random() * spawnVariation * 2) - spawnVariation;
	}
	if (!hasGameStopped && obstacles.length < maxObstacles && obstacleSpawnTimer > currentSpawnTime) {
		var canSpawn = true;
		var spawnX = 2048 + 200; // Spawn well off-screen to the right
		// Check if there's enough space from last obstacle
		if (obstacles.length > 0) {
			var lastObstacle = obstacles[obstacles.length - 1];
			if (lastObstacle.x > spawnX - 600) {
				// Ensure minimum 600px spacing
				canSpawn = false;
			}
		}
		if (canSpawn) {
			// Add random horizontal offset while maintaining minimum spacing
			var offsetRange = 100; // Reduced range to ensure proper spacing
			var horizontalOffset = Math.floor(Math.random() * offsetRange);
			var newObstacle = game.addChild(createObstacle(spawnX + horizontalOffset));
			obstacles.push(newObstacle);
			// Reset timer with additional random offset for next spawn
			obstacleSpawnTimer = -Math.floor(Math.random() * 60); // Start next timer with up to 1 second head start
		}
	}
	// Collision detection with ground obstacles
	for (var o = 0; o < obstacles.length; o++) {
		var obstacle = obstacles[o];
		var collisionTarget = obstacle.hitbox || obstacle;
		if (dinosaur.hitbox.intersects(collisionTarget) && !dinosaur.hasCollided) {
			dinosaur.hasCollided = true;
			hasGameStopped = true;
			gameSpeedBeforeCollision = gameSpeed;
			gameSpeed = 0;
			LK.stopMusic();
			// Play defeat sound
			LK.getSound('defeat').play();
			// Throw dinosaur up and to the right
			dinosaur.velocityY = -50;
			dinosaur.isGrounded = false;
			// Add spinning animation
			tween(dinosaur, {
				rotation: Math.PI * 4
			}, {
				duration: 1500,
				easing: tween.easeOut
			});
			return; // Stop processing other collisions
		}
	}
	// Collision detection with flying obstacle
	var flyingCollisionTarget = flyingObstacle && flyingObstacle.hitbox ? flyingObstacle.hitbox : flyingObstacle;
	if (flyingObstacle && dinosaur.hitbox.intersects(flyingCollisionTarget) && !dinosaur.hasCollided) {
		dinosaur.hasCollided = true;
		hasGameStopped = true;
		gameSpeedBeforeCollision = gameSpeed;
		gameSpeed = 0;
		LK.stopMusic();
		// Play defeat sound
		LK.getSound('defeat').play();
		// Throw dinosaur up and to the right
		dinosaur.velocityY = -50;
		dinosaur.isGrounded = false;
		// Add spinning animation
		tween(dinosaur, {
			rotation: Math.PI * 4
		}, {
			duration: 1500,
			easing: tween.easeOut
		});
		return; // Stop processing other collisions
	}
	// Gradually increase game speed for difficulty progression
	if (!hasGameStopped && LK.ticks % 360 === 0) {
		// Every 6 seconds at 60fps
		gameSpeed += 0.8;
		for (var j = 0; j < groundTiles.length; j++) {
			groundTiles[j].scrollSpeed = -gameSpeed;
		}
	}
	// Manage clouds
	for (var c = clouds.length - 1; c >= 0; c--) {
		var cloud = clouds[c];
		// Remove clouds that have scrolled off screen
		if (cloud.x < -200) {
			cloud.destroy();
			clouds.splice(c, 1);
		}
	}
	// Sort clouds by scale so bigger ones are drawn on top
	clouds.sort(function (a, b) {
		return a.scaleX - b.scaleX; // Smaller clouds first (drawn behind), bigger clouds last (drawn on top)
	});
	// Reorder clouds in the display list based on sorted order
	for (var i = 0; i < clouds.length; i++) {
		game.removeChild(clouds[i]);
		game.addChild(clouds[i]);
	}
	// Spawn new clouds
	if (!hasGameStopped) {
		cloudSpawnTimer++;
	}
	if (!hasGameStopped && cloudSpawnTimer > 180) {
		// Spawn new cloud every 3 seconds
		var cloudY = Math.random() * 800 + 200; // Upper portion of screen
		var newCloud = game.addChild(createCloud(2048 + 150, cloudY));
		clouds.push(newCloud);
		cloudSpawnTimer = 0;
	}
	// Ensure ground tiles are behind obstacles
	for (var g = 0; g < groundTiles.length; g++) {
		if (game.children.indexOf(groundTiles[g]) !== -1) {
			game.removeChild(groundTiles[g]);
			game.addChildAt(groundTiles[g], 0);
		}
	}
	// Ensure dinosaur is always drawn on top of everything
	if (game.children.indexOf(dinosaur) !== -1) {
		game.removeChild(dinosaur);
		game.addChild(dinosaur);
	}
};

===================================================================
--- original.js
+++ change.js
@@ -171,16 +171,16 @@
 	var sizes = ['small', 'large'];
 	var randomSize = sizes[Math.floor(Math.random() * sizes.length)];
 	var obstacle = new Obstacle(randomSize);
 	obstacle.x = x;
-	obstacle.y = groundY;
+	obstacle.y = groundY + 10;
 	return obstacle;
 }
 // Create flying obstacle function
 function createFlyingObstacle(x) {
 	var obstacle = new FlyingObstacle();
 	obstacle.x = x;
-	obstacle.y = flyingObstacleHeight;
+	obstacle.y = flyingObstacleHeight + 10;
 	return obstacle;
 }
 // Create cloud function
 function createCloud(x, y) {
@@ -403,8 +403,15 @@
 		var newCloud = game.addChild(createCloud(2048 + 150, cloudY));
 		clouds.push(newCloud);
 		cloudSpawnTimer = 0;
 	}
+	// Ensure ground tiles are behind obstacles
+	for (var g = 0; g < groundTiles.length; g++) {
+		if (game.children.indexOf(groundTiles[g]) !== -1) {
+			game.removeChild(groundTiles[g]);
+			game.addChildAt(groundTiles[g], 0);
+		}
+	}
 	// Ensure dinosaur is always drawn on top of everything
 	if (game.children.indexOf(dinosaur) !== -1) {
 		game.removeChild(dinosaur);
 		game.addChild(dinosaur);