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

/**** 
* Classes
****/ 
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.width = 40;
	self.height = 80;
	return self;
});
var Platform = Container.expand(function (width) {
	var self = Container.call(this);
	width = width || 300;
	var platformGraphics = self.attachAsset('platform', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: width / 300
	});
	self.width = width;
	self.height = 40;
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.velocityY = 0;
	self.velocityX = 0;
	self.isGrounded = false;
	self.jumpPower = -25;
	self.gravity = 1.2;
	self.speed = 8;
	self.maxFallSpeed = 20;
	self.isMoving = false;
	self.idleAnimationTime = 0;
	self.movementAnimationTime = 0;
	self.moveLeft = function () {
		self.velocityX = -self.speed;
	};
	self.moveRight = function () {
		self.velocityX = self.speed;
	};
	self.jump = function () {
		if (self.isGrounded) {
			self.velocityY = self.jumpPower;
			self.isGrounded = false;
			LK.getSound('jump').play();
		}
	};
	self.update = function () {
		// Apply gravity
		if (!self.isGrounded) {
			self.velocityY += self.gravity;
			if (self.velocityY > self.maxFallSpeed) {
				self.velocityY = self.maxFallSpeed;
			}
		}
		// Apply horizontal movement with friction
		self.x += self.velocityX;
		self.velocityX *= 0.85;
		// Apply vertical movement
		self.y += self.velocityY;
		// Check if player is moving horizontally
		self.isMoving = Math.abs(self.velocityX) > 0.5;
		// Update animations
		if (self.isMoving) {
			// Movement animation - slight bouncing effect
			self.movementAnimationTime += 0.3;
			var bounceOffset = Math.sin(self.movementAnimationTime) * 3;
			playerGraphics.y = bounceOffset;
			playerGraphics.scaleX = 1 + Math.sin(self.movementAnimationTime * 2) * 0.05;
			playerGraphics.scaleY = 1 + Math.cos(self.movementAnimationTime * 2) * 0.05;
			// Reset idle animation
			self.idleAnimationTime = 0;
		} else {
			// Idle animation - gentle floating effect
			self.idleAnimationTime += 0.1;
			var floatOffset = Math.sin(self.idleAnimationTime) * 2;
			playerGraphics.y = floatOffset;
			playerGraphics.scaleX = 1 + Math.sin(self.idleAnimationTime * 0.5) * 0.02;
			playerGraphics.scaleY = 1 + Math.cos(self.idleAnimationTime * 0.5) * 0.02;
			// Reset movement animation
			self.movementAnimationTime = 0;
		}
		// No horizontal boundaries - allow infinite movement for side-scrolling
		// Check if fallen off screen
		if (self.y > 2800) {
			LK.showGameOver();
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
var player;
var platforms = [];
var obstacles = [];
var cameraOffset = 0;
var distanceScore = 0;
var lastPlatformX = 0;
var leftButtonPressed = false;
var rightButtonPressed = false;
var jumpButtonPressed = false;
var gameAttempts = 0;
var levelSeed = 0;
var goalReached = false;
var goalAsset = null;
// Create score display
var scoreText = new Text2('Distance: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
// Create control instruction text
var instructionText = new Text2('Use Buttons to Move and Jump', {
	size: 40,
	fill: 0xFFFFFF
});
instructionText.anchor.set(0.5, 1);
LK.gui.bottom.addChild(instructionText);
// Initialize player
player = new Player();
player.x = 300;
player.y = 2000;
game.addChild(player);
// Create initial platforms
function createPlatform(x, y, width) {
	var platform = new Platform(width);
	platform.x = x;
	platform.y = y;
	platforms.push(platform);
	game.addChild(platform);
	return platform;
}
function createObstacle(x, y) {
	var obstacle = new Obstacle();
	obstacle.x = x;
	obstacle.y = y;
	obstacles.push(obstacle);
	game.addChild(obstacle);
	return obstacle;
}
// Generate initial level
createPlatform(200, 2100, 400); // Starting platform
createPlatform(600, 2000, 300);
createPlatform(1000, 1900, 250);
createPlatform(1400, 1800, 300);
createObstacle(1400, 1800);
createPlatform(1800, 1700, 200);
createPlatform(2200, 1600, 350);
lastPlatformX = 2200;
function generateLevel() {
	// Remove platforms that are too far behind
	for (var i = platforms.length - 1; i >= 0; i--) {
		var platform = platforms[i];
		if (platform.x < cameraOffset - 500) {
			platform.destroy();
			platforms.splice(i, 1);
		}
	}
	// Remove obstacles that are too far behind
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obstacle = obstacles[i];
		if (obstacle.x < cameraOffset - 500) {
			obstacle.destroy();
			obstacles.splice(i, 1);
		}
	}
	// Generate new platforms ahead
	while (lastPlatformX < cameraOffset + 3000) {
		var lastPlatform = findLastPlatform();
		var newPlatform = generateVerifiedPlatform(lastPlatform);
		lastPlatformX = newPlatform.x;
		createPlatform(newPlatform.x, newPlatform.y, newPlatform.width);
		// Add obstacles with attempt-based variation
		var obstacleChance = 0.2 + gameAttempts * 0.05; // Increase difficulty with attempts
		if (obstacleChance > 0.5) obstacleChance = 0.5; // Cap at 50%
		if (Math.random() < obstacleChance) {
			createObstacle(newPlatform.x, newPlatform.y);
		}
	}
}
function findLastPlatform() {
	var lastPlatform = null;
	var maxX = -999999;
	for (var i = 0; i < platforms.length; i++) {
		if (platforms[i].x > maxX) {
			maxX = platforms[i].x;
			lastPlatform = platforms[i];
		}
	}
	return lastPlatform;
}
function generateVerifiedPlatform(lastPlatform) {
	var maxJumpDistance = 320; // Maximum horizontal jump distance
	var maxJumpHeight = 350; // Maximum jump height (going up)
	var maxFallHeight = 600; // Maximum fall height (going down)
	// Attempt-based level variation
	var difficultyMultiplier = 1 + gameAttempts * 0.1;
	if (difficultyMultiplier > 2) difficultyMultiplier = 2; // Cap difficulty
	var attemptSeed = gameAttempts * 12345 % 100000;
	var pseudoRandom = (attemptSeed + lastPlatformX * 7) % 1000 / 1000;
	var gapDistance = 150 + pseudoRandom * 200 * difficultyMultiplier;
	var platformWidth = 150 + pseudoRandom * 150;
	var heightVariation = -150 + pseudoRandom * 300;
	// Ensure gap is not too large
	if (gapDistance > maxJumpDistance) {
		gapDistance = maxJumpDistance - 20;
	}
	var newX = lastPlatform.x + gapDistance;
	var newY = lastPlatform.y + heightVariation;
	// Verify vertical reachability
	var heightDifference = newY - lastPlatform.y;
	if (heightDifference > maxFallHeight) {
		newY = lastPlatform.y + maxFallHeight;
	} else if (heightDifference < -maxJumpHeight) {
		newY = lastPlatform.y - maxJumpHeight;
	}
	// Keep platforms within screen bounds
	if (newY > 2200) newY = 2200;
	if (newY < 1000) newY = 1000;
	// Verify horizontal reachability with physics simulation
	if (!isPlatformReachable(lastPlatform, {
		x: newX,
		y: newY,
		width: platformWidth
	})) {
		// Adjust platform to make it reachable
		gapDistance = maxJumpDistance - 50;
		newX = lastPlatform.x + gapDistance;
		// Also adjust height to be more forgiving
		if (heightDifference > 0) {
			newY = lastPlatform.y + Math.min(heightDifference, 200);
		} else {
			newY = lastPlatform.y + Math.max(heightDifference, -250);
		}
	}
	return {
		x: newX,
		y: newY,
		width: platformWidth
	};
}
function isPlatformReachable(fromPlatform, toPlatform) {
	// Simulate a jump from the edge of fromPlatform to toPlatform
	var startX = fromPlatform.x + fromPlatform.width / 2;
	var startY = fromPlatform.y;
	var targetX = toPlatform.x;
	var targetY = toPlatform.y;
	var targetLeft = targetX - toPlatform.width / 2;
	var targetRight = targetX + toPlatform.width / 2;
	// Simulate jump physics
	var jumpPower = -25;
	var gravity = 1.2;
	var speed = 8;
	var maxSimulationTime = 100; // Prevent infinite loops
	var simX = startX;
	var simY = startY;
	var velocityY = jumpPower;
	var velocityX = speed;
	for (var t = 0; t < maxSimulationTime; t++) {
		simX += velocityX;
		simY += velocityY;
		velocityY += gravity;
		// Check if we've reached the target platform level
		if (simY >= targetY && simX >= targetLeft && simX <= targetRight) {
			return true;
		}
		// If we've fallen too far below the target, we can't reach it
		if (simY > targetY + 100) {
			break;
		}
	}
	return false;
}
function checkCollisions() {
	player.isGrounded = false;
	// Check platform collisions
	for (var i = 0; i < platforms.length; i++) {
		var platform = platforms[i];
		var playerBounds = {
			left: player.x - 30,
			right: player.x + 30,
			top: player.y - 60,
			bottom: player.y
		};
		var platformBounds = {
			left: platform.x - platform.width / 2,
			right: platform.x + platform.width / 2,
			top: platform.y - 20,
			bottom: platform.y + 20
		};
		// Check if player overlaps with platform
		if (playerBounds.right > platformBounds.left && playerBounds.left < platformBounds.right && playerBounds.bottom > platformBounds.top && playerBounds.top < platformBounds.bottom) {
			// Landing on top of platform
			if (player.velocityY >= 0 && playerBounds.bottom - platformBounds.top < 20) {
				player.y = platformBounds.top;
				player.velocityY = 0;
				player.isGrounded = true;
			}
		}
	}
	// Check obstacle collisions
	for (var i = 0; i < obstacles.length; i++) {
		var obstacle = obstacles[i];
		if (player.intersects(obstacle)) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
	// Check goal collision
	if (goalAsset && !goalReached && player.intersects(goalAsset)) {
		goalReached = true;
		LK.effects.flashScreen(0x00ff00, 1000); // Flash green for victory
		LK.showYouWin();
		return;
	}
}
function updateCamera() {
	// Camera follows player with some offset
	var targetCameraX = player.x - 400;
	cameraOffset += (targetCameraX - cameraOffset) * 0.1;
	// Move all game objects relative to camera
	game.x = -cameraOffset;
	// Update distance score
	distanceScore = Math.floor(cameraOffset / 10);
	scoreText.setText('Distance: ' + distanceScore);
	LK.setScore(distanceScore);
	// Create goal asset when reaching distance 1000
	if (distanceScore >= 1000 && !goalAsset) {
		goalAsset = LK.getAsset('Final1', {
			width: 100,
			height: 100,
			anchorX: 0.5,
			anchorY: 1.0
		});
		goalAsset.x = cameraOffset + 1000; // Position relative to camera at distance 1000
		goalAsset.y = 1500; // Position at a reasonable height
		game.addChild(goalAsset);
	}
}
// Create control buttons
var leftButton = LK.getAsset('Izquierda1', {
	width: 150,
	height: 100,
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1.5,
	scaleY: 1.5
});
leftButton.alpha = 0.7;
var rightButton = LK.getAsset('Derecha2', {
	width: 150,
	height: 100,
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1.5,
	scaleY: 1.5
});
rightButton.alpha = 0.7;
var jumpButton = LK.getAsset('Salto1', {
	width: 120,
	height: 120,
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 2.2,
	scaleY: 2.2
});
jumpButton.tint = 0x32cd32;
jumpButton.alpha = 0.8;
// Position buttons in GUI - left and right buttons together in bottom left
LK.gui.bottomLeft.addChild(leftButton);
leftButton.x = 80;
leftButton.y = -100;
LK.gui.bottomLeft.addChild(rightButton);
rightButton.x = 300;
rightButton.y = -100;
LK.gui.bottomRight.addChild(jumpButton);
jumpButton.x = -130;
jumpButton.y = -100;
// Button event handlers
leftButton.down = function () {
	leftButton.alpha = 1.0;
	leftButtonPressed = true;
};
leftButton.up = function () {
	leftButton.alpha = 0.7;
	leftButtonPressed = false;
};
rightButton.down = function () {
	rightButton.alpha = 1.0;
	rightButtonPressed = true;
};
rightButton.up = function () {
	rightButton.alpha = 0.7;
	rightButtonPressed = false;
};
jumpButton.down = function () {
	jumpButton.alpha = 1.0;
	jumpButton.scaleX = 1.3;
	jumpButton.scaleY = 1.3;
	jumpButtonPressed = true;
	player.jump();
};
jumpButton.up = function () {
	jumpButton.alpha = 0.8;
	jumpButton.scaleX = 1.5;
	jumpButton.scaleY = 1.5;
	jumpButtonPressed = false;
};
// Track when game starts/resets
var originalShowGameOver = LK.showGameOver;
LK.showGameOver = function () {
	gameAttempts++;
	levelSeed = gameAttempts * 54321; // Change seed each attempt
	originalShowGameOver();
};
game.update = function () {
	// Handle continuous movement based on button states
	if (leftButtonPressed) {
		player.moveLeft();
	}
	if (rightButtonPressed) {
		player.moveRight();
	}
	// Handle continuous jump (allows jump when held down and landing)
	if (jumpButtonPressed) {
		player.jump();
	}
	checkCollisions();
	updateCamera();
	generateLevel();
};

===================================================================
--- original.js
+++ change.js
@@ -346,17 +346,17 @@
 	// Update distance score
 	distanceScore = Math.floor(cameraOffset / 10);
 	scoreText.setText('Distance: ' + distanceScore);
 	LK.setScore(distanceScore);
-	// Create goal asset when reaching distance 1500
-	if (distanceScore >= 1500 && !goalAsset) {
+	// Create goal asset when reaching distance 1000
+	if (distanceScore >= 1000 && !goalAsset) {
 		goalAsset = LK.getAsset('Final1', {
 			width: 100,
 			height: 100,
 			anchorX: 0.5,
 			anchorY: 1.0
 		});
-		goalAsset.x = cameraOffset + 1500; // Position relative to camera at distance 1500
+		goalAsset.x = cameraOffset + 1000; // Position relative to camera at distance 1000
 		goalAsset.y = 1500; // Position at a reasonable height
 		game.addChild(goalAsset);
 	}
 }