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

/**** 
* Classes
****/ 
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 15;
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.speed = -8;
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});
var FlyingEnemy = Container.expand(function () {
	var self = Container.call(this);
	var flyingEnemyGraphics = self.attachAsset('flyingEnemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -10;
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});
var GroundSegment = Container.expand(function () {
	var self = Container.call(this);
	var groundGraphics = self.attachAsset('ground', {
		anchorX: 0,
		anchorY: 0
	});
	self.speed = -8;
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});
var Hole = Container.expand(function () {
	var self = Container.call(this);
	var holeGraphics = self.attachAsset('hole', {
		anchorX: 0,
		anchorY: 0
	});
	self.speed = -8;
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.speed = -8;
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.isJumping = false;
	self.jumpSpeed = 0;
	self.gravity = 0.8;
	self.jumpPower = -25;
	self.groundY = 0;
	self.customColor = 0x4CAF50;
	self.jumpCount = 0;
	self.maxJumps = 2;
	self.characterType = 'player';
	self.isInvincible = false;
	self.invincibilityTimer = 0;
	self.hasWeapon = false;
	self.weaponGraphics = null;
	self.jump = function () {
		if (self.jumpCount < self.maxJumps) {
			if (!self.isJumping) {
				self.isJumping = true;
			}
			self.jumpSpeed = self.jumpPower;
			self.jumpCount++;
			LK.getSound('jump').play();
		}
	};
	self.setColor = function (color) {
		self.customColor = color;
		playerGraphics.tint = color;
	};
	self.setCharacter = function (characterType) {
		self.characterType = characterType;
		playerGraphics.destroy();
		playerGraphics = self.attachAsset(characterType, {
			anchorX: 0.5,
			anchorY: 1.0
		});
	};
	self.activateInvincibility = function () {
		self.isInvincible = true;
		self.invincibilityTimer = 300; // 5 seconds at 60fps
		// Flash effect
		tween(playerGraphics, {
			alpha: 0.3
		}, {
			duration: 200,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				if (self.isInvincible) {
					tween(playerGraphics, {
						alpha: 1
					}, {
						duration: 200,
						easing: tween.easeInOut,
						onFinish: function onFinish() {
							if (self.isInvincible) {
								self.activateInvincibility();
							}
						}
					});
				}
			}
		});
	};
	self.pickupWeapon = function () {
		self.hasWeapon = true;
		// Create weapon graphics attached to player
		if (self.weaponGraphics) {
			self.weaponGraphics.destroy();
		}
		self.weaponGraphics = self.attachAsset('weapon', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		// Position weapon higher and straight in player's hand pointing forward
		self.weaponGraphics.x = 40;
		self.weaponGraphics.y = -200;
		self.weaponGraphics.scaleX = 3;
		self.weaponGraphics.scaleY = 3;
		self.weaponGraphics.rotation = 0; // Straight forward
	};
	self.update = function () {
		if (self.isJumping) {
			self.jumpSpeed += self.gravity;
			self.y += self.jumpSpeed;
			var landingY = self.groundY;
			if (self.y >= landingY) {
				self.y = landingY;
				self.isJumping = false;
				self.jumpSpeed = 0;
				self.jumpCount = 0;
			}
		}
		// Handle invincibility timer
		if (self.isInvincible) {
			self.invincibilityTimer--;
			if (self.invincibilityTimer <= 0) {
				self.isInvincible = false;
				tween.stop(playerGraphics);
				playerGraphics.alpha = 1;
			}
		}
	};
	return self;
});
var Weapon = Container.expand(function () {
	var self = Container.call(this);
	var weaponGraphics = self.attachAsset('weapon', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -8;
	self.update = function () {
		self.x += self.speed;
		self.y += Math.sin(LK.ticks * 0.1) * 2; // Floating animation
	};
	return self;
});

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

/**** 
* Game Code
****/ 
var gameState = 'ready'; // 'customization', 'ready', 'playing', 'gameOver'
var selectedCharacter = 'player';
var player;
var groundSegments = [];
var holes = [];
var enemies = [];
var obstacles = [];
var bullets = [];
var flyingEnemies = [];
var weapons = [];
var gameSpeed = 8;
var spawnTimer = 0;
var shootTimer = 0;
var distance = 0;
var groundY = 2400;
var invincibilitySpacing = 1;
var lastInvincibilityTime = 0;
// UI Elements
var character1Button = LK.getAsset('player', {
	anchorX: 0.5,
	anchorY: 0.5
});
character1Button.x = 800;
character1Button.y = 1200;
character1Button.scaleX = 0.8;
character1Button.scaleY = 0.8;
character1Button.visible = true;
var character2Button = LK.getAsset('player2', {
	anchorX: 0.5,
	anchorY: 0.5
});
character2Button.x = 1024;
character2Button.y = 1200;
character2Button.scaleX = 0.8;
character2Button.scaleY = 0.8;
character2Button.visible = true;
var character3Button = LK.getAsset('player3', {
	anchorX: 0.5,
	anchorY: 0.5
});
character3Button.x = 1248;
character3Button.y = 1200;
character3Button.scaleX = 0.8;
character3Button.scaleY = 0.8;
character3Button.visible = true;
var playButton = LK.getAsset('startButton', {
	anchorX: 0.5,
	anchorY: 0.5
});
playButton.x = 1024;
playButton.y = 1600;
playButton.scaleX = 1.5;
playButton.scaleY = 1.5;
playButton.visible = true;
// Character selection border
var selectionBorder = LK.getAsset('jumpButton', {
	anchorX: 0.5,
	anchorY: 0.5
});
selectionBorder.x = 1024;
selectionBorder.y = 1200;
selectionBorder.scaleX = 2.5;
selectionBorder.scaleY = 2.5;
selectionBorder.alpha = 0.3;
selectionBorder.visible = true;
var distanceText = new Text2('0m', {
	size: 60,
	fill: 0xFFFFFF
});
distanceText.anchor.set(0.5, 0);
LK.gui.top.addChild(distanceText);
var fireButton = LK.getAsset('fireButton', {
	anchorX: 0.5,
	anchorY: 0.5
});
fireButton.x = 150;
fireButton.y = 2200;
game.addChild(fireButton);
// Initialize player
player = new Player();
player.x = 400;
player.y = groundY;
player.groundY = groundY;
game.addChild(player);
// Initialize ground segments
for (var i = 0; i < 15; i++) {
	var ground = new GroundSegment();
	ground.x = i * 200;
	ground.y = groundY;
	groundSegments.push(ground);
	game.addChild(ground);
}
function initializeGame() {
	gameState = 'playing';
	distance = 0;
	gameSpeed = 8;
	spawnTimer = 0;
	// Hide character selection and play button
	character1Button.visible = false;
	character2Button.visible = false;
	character3Button.visible = false;
	selectionBorder.visible = false;
	playButton.visible = false;
	// Clear existing obstacles
	clearAllObstacles();
	// Reset player position
	player.x = 400;
	player.y = groundY;
	player.isJumping = false;
	player.jumpSpeed = 0;
	player.jumpCount = 0;
	player.isInvincible = false;
	player.invincibilityTimer = 0;
	// Give player weapon at start
	player.pickupWeapon();
	invincibilitySpacing = 1;
	lastInvincibilityTime = 0;
	// Reset ground segments
	for (var i = 0; i < groundSegments.length; i++) {
		groundSegments[i].x = i * 200;
		groundSegments[i].speed = -gameSpeed;
	}
}
function clearAllObstacles() {
	for (var i = holes.length - 1; i >= 0; i--) {
		holes[i].destroy();
		holes.splice(i, 1);
	}
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].destroy();
		enemies.splice(i, 1);
	}
	for (var i = obstacles.length - 1; i >= 0; i--) {
		obstacles[i].destroy();
		obstacles.splice(i, 1);
	}
	for (var i = bullets.length - 1; i >= 0; i--) {
		bullets[i].destroy();
		bullets.splice(i, 1);
	}
	for (var i = flyingEnemies.length - 1; i >= 0; i--) {
		flyingEnemies[i].destroy();
		flyingEnemies.splice(i, 1);
	}
}
function spawnObstacle() {
	var rand = Math.random();
	var spawnX = 2200;
	if (rand < 0.15) {
		// Spawn hole
		var hole = new Hole();
		hole.x = spawnX;
		hole.y = groundY;
		hole.speed = -gameSpeed;
		holes.push(hole);
		game.addChild(hole);
	} else if (rand < 0.25) {
		// Spawn enemy
		var enemy = new Enemy();
		enemy.x = spawnX;
		enemy.y = groundY;
		enemy.speed = -gameSpeed;
		enemies.push(enemy);
		game.addChild(enemy);
	} else if (rand < 0.35) {
		// Spawn obstacle
		var obstacle = new Obstacle();
		obstacle.x = spawnX;
		obstacle.y = groundY;
		obstacle.speed = -gameSpeed;
		obstacles.push(obstacle);
		game.addChild(obstacle);
	} else if (rand < 0.45) {
		// Spawn flying enemy
		var flyingEnemy = new FlyingEnemy();
		flyingEnemy.x = spawnX;
		flyingEnemy.y = groundY - 300 - Math.random() * 200;
		flyingEnemy.speed = -gameSpeed;
		flyingEnemies.push(flyingEnemy);
		game.addChild(flyingEnemy);
	}
}
function checkCollisions() {
	// Check bullet vs enemy collisions
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		var bulletHit = false;
		// Check bullet vs ground enemies
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				// Remove bullet and enemy
				bullet.destroy();
				bullets.splice(i, 1);
				enemy.destroy();
				enemies.splice(j, 1);
				bulletHit = true;
				break;
			}
		}
		// Check bullet vs flying enemies
		if (!bulletHit) {
			for (var j = flyingEnemies.length - 1; j >= 0; j--) {
				var flyingEnemy = flyingEnemies[j];
				if (bullet.intersects(flyingEnemy)) {
					// Remove bullet and flying enemy
					bullet.destroy();
					bullets.splice(i, 1);
					flyingEnemy.destroy();
					flyingEnemies.splice(j, 1);
					break;
				}
			}
		}
	}
	// Skip damage collisions if invincible
	if (!player.isInvincible) {
		// Check hole collisions
		for (var i = 0; i < holes.length; i++) {
			var hole = holes[i];
			if (player.x > hole.x && player.x < hole.x + 150 && !player.isJumping) {
				gameOver();
				return;
			}
		}
		// Check enemy collisions
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			if (player.intersects(enemy)) {
				gameOver();
				return;
			}
		}
		// Check flying enemy collisions
		for (var i = 0; i < flyingEnemies.length; i++) {
			var flyingEnemy = flyingEnemies[i];
			if (player.intersects(flyingEnemy)) {
				gameOver();
				return;
			}
		}
		// Check obstacle collisions
		for (var i = 0; i < obstacles.length; i++) {
			var obstacle = obstacles[i];
			if (player.intersects(obstacle)) {
				gameOver();
				return;
			}
		}
	}
}
function gameOver() {
	gameState = 'gameOver';
	LK.getSound('hit').play();
	LK.getSound('muerte').play();
	LK.showGameOver();
}
function updateSpeed() {
	gameSpeed = 8 + distance / 100;
	for (var i = 0; i < groundSegments.length; i++) {
		groundSegments[i].speed = -gameSpeed;
	}
	for (var i = 0; i < holes.length; i++) {
		holes[i].speed = -gameSpeed;
	}
	for (var i = 0; i < enemies.length; i++) {
		enemies[i].speed = -gameSpeed;
	}
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i].speed = -gameSpeed;
	}
	for (var i = 0; i < flyingEnemies.length; i++) {
		flyingEnemies[i].speed = -gameSpeed;
	}
}
game.down = function (x, y, obj) {
	if (gameState === 'ready') {
		// Check character selection clicks
		if (x > 720 && x < 880 && y > 1120 && y < 1280) {
			// Character 1 selected
			selectedCharacter = 'player';
			selectionBorder.x = 800;
			player.setCharacter('player');
			return;
		} else if (x > 944 && x < 1104 && y > 1120 && y < 1280) {
			// Character 2 selected
			selectedCharacter = 'player2';
			selectionBorder.x = 1024;
			player.setCharacter('player2');
			return;
		} else if (x > 1168 && x < 1328 && y > 1120 && y < 1280) {
			// Character 3 selected
			selectedCharacter = 'player3';
			selectionBorder.x = 1248;
			player.setCharacter('player3');
			return;
		}
		// Check play button click
		if (x > 774 && x < 1274 && y > 1350 && y < 1850) {
			LK.playMusic('musica');
			initializeGame();
			return;
		}
	} else if (gameState === 'playing') {
		// Check fire button click (bottom left corner)
		if (x > 90 && x < 210 && y > 2140 && y < 2260) {
			// Fire button pressed - shoot bullet
			if (shootTimer <= 0) {
				var bullet = new Bullet();
				bullet.x = player.x + 50;
				bullet.y = player.y - 100;
				// Player always has weapon so bullets are always enhanced
				bullet.speed = 20;
				bullet.scaleX = 1.2;
				bullet.scaleY = 1.2;
				bullets.push(bullet);
				game.addChild(bullet);
				LK.getSound('shoot').play();
				shootTimer = 5; // Fast shooting since player always has weapon
			}
		} else {
			// Regular screen tap - jump
			player.jump();
		}
	}
};
game.update = function () {
	if (gameState === 'playing') {
		distance += gameSpeed / 10;
		distanceText.setText(Math.floor(distance) + 'm');
		// Update speed based on distance
		updateSpeed();
		// Spawn obstacles
		spawnTimer++;
		var spawnRate = (120 - Math.min(distance / 15, 50)) * invincibilitySpacing;
		if (spawnTimer >= spawnRate) {
			spawnObstacle();
			spawnTimer = 0;
		}
		// Reset invincibility spacing after effect wears off
		if (distance - lastInvincibilityTime > 300 && invincibilitySpacing > 1) {
			invincibilitySpacing = 1;
		}
		// Update ground segments - make continuous
		for (var i = 0; i < groundSegments.length; i++) {
			var ground = groundSegments[i];
			if (ground.x < -200) {
				// Find the rightmost ground segment
				var maxX = -1000;
				for (var j = 0; j < groundSegments.length; j++) {
					if (groundSegments[j].x > maxX) {
						maxX = groundSegments[j].x;
					}
				}
				ground.x = maxX + 200;
			}
		}
		// Update and clean up holes
		for (var i = holes.length - 1; i >= 0; i--) {
			var hole = holes[i];
			if (hole.x < -200) {
				hole.destroy();
				holes.splice(i, 1);
			}
		}
		// Update and clean up enemies
		for (var i = enemies.length - 1; i >= 0; i--) {
			var enemy = enemies[i];
			if (enemy.x < -100) {
				enemy.destroy();
				enemies.splice(i, 1);
			}
		}
		// Update and clean up obstacles
		for (var i = obstacles.length - 1; i >= 0; i--) {
			var obstacle = obstacles[i];
			if (obstacle.x < -100) {
				obstacle.destroy();
				obstacles.splice(i, 1);
			}
		}
		// Update and clean up bullets
		for (var i = bullets.length - 1; i >= 0; i--) {
			var bullet = bullets[i];
			if (bullet.x > 2200) {
				bullet.destroy();
				bullets.splice(i, 1);
			}
		}
		// Update and clean up flying enemies
		for (var i = flyingEnemies.length - 1; i >= 0; i--) {
			var flyingEnemy = flyingEnemies[i];
			if (flyingEnemy.x < -100) {
				flyingEnemy.destroy();
				flyingEnemies.splice(i, 1);
			}
		}
		// Update shoot timer
		if (shootTimer > 0) {
			shootTimer--;
		}
		// Check collisions
		checkCollisions();
		// Update score
		LK.setScore(Math.floor(distance));
		// Check win condition
		if (distance >= 10000) {
			gameState = 'won';
			LK.getSound('victoria').play();
			LK.showYouWin();
			return;
		}
	}
};
// Show character selection and play button initially
game.addChild(character1Button);
game.addChild(character2Button);
game.addChild(character3Button);
game.addChild(selectionBorder);
game.addChild(playButton);
;

===================================================================
--- original.js
+++ change.js
@@ -228,15 +228,55 @@
 var groundY = 2400;
 var invincibilitySpacing = 1;
 var lastInvincibilityTime = 0;
 // UI Elements
-var playButton = LK.getAsset('playButton', {
+var character1Button = LK.getAsset('player', {
 	anchorX: 0.5,
 	anchorY: 0.5
 });
+character1Button.x = 800;
+character1Button.y = 1200;
+character1Button.scaleX = 0.8;
+character1Button.scaleY = 0.8;
+character1Button.visible = true;
+var character2Button = LK.getAsset('player2', {
+	anchorX: 0.5,
+	anchorY: 0.5
+});
+character2Button.x = 1024;
+character2Button.y = 1200;
+character2Button.scaleX = 0.8;
+character2Button.scaleY = 0.8;
+character2Button.visible = true;
+var character3Button = LK.getAsset('player3', {
+	anchorX: 0.5,
+	anchorY: 0.5
+});
+character3Button.x = 1248;
+character3Button.y = 1200;
+character3Button.scaleX = 0.8;
+character3Button.scaleY = 0.8;
+character3Button.visible = true;
+var playButton = LK.getAsset('startButton', {
+	anchorX: 0.5,
+	anchorY: 0.5
+});
 playButton.x = 1024;
 playButton.y = 1600;
+playButton.scaleX = 1.5;
+playButton.scaleY = 1.5;
 playButton.visible = true;
+// Character selection border
+var selectionBorder = LK.getAsset('jumpButton', {
+	anchorX: 0.5,
+	anchorY: 0.5
+});
+selectionBorder.x = 1024;
+selectionBorder.y = 1200;
+selectionBorder.scaleX = 2.5;
+selectionBorder.scaleY = 2.5;
+selectionBorder.alpha = 0.3;
+selectionBorder.visible = true;
 var distanceText = new Text2('0m', {
 	size: 60,
 	fill: 0xFFFFFF
 });
@@ -267,9 +307,13 @@
 	gameState = 'playing';
 	distance = 0;
 	gameSpeed = 8;
 	spawnTimer = 0;
-	// Hide play button
+	// Hide character selection and play button
+	character1Button.visible = false;
+	character2Button.visible = false;
+	character3Button.visible = false;
+	selectionBorder.visible = false;
 	playButton.visible = false;
 	// Clear existing obstacles
 	clearAllObstacles();
 	// Reset player position
@@ -443,10 +487,30 @@
 	}
 }
 game.down = function (x, y, obj) {
 	if (gameState === 'ready') {
+		// Check character selection clicks
+		if (x > 720 && x < 880 && y > 1120 && y < 1280) {
+			// Character 1 selected
+			selectedCharacter = 'player';
+			selectionBorder.x = 800;
+			player.setCharacter('player');
+			return;
+		} else if (x > 944 && x < 1104 && y > 1120 && y < 1280) {
+			// Character 2 selected
+			selectedCharacter = 'player2';
+			selectionBorder.x = 1024;
+			player.setCharacter('player2');
+			return;
+		} else if (x > 1168 && x < 1328 && y > 1120 && y < 1280) {
+			// Character 3 selected
+			selectedCharacter = 'player3';
+			selectionBorder.x = 1248;
+			player.setCharacter('player3');
+			return;
+		}
 		// Check play button click
-		if (x > 874 && x < 1174 && y > 1450 && y < 1750) {
+		if (x > 774 && x < 1274 && y > 1350 && y < 1850) {
 			LK.playMusic('musica');
 			initializeGame();
 			return;
 		}
@@ -560,7 +624,11 @@
 			return;
 		}
 	}
 };
-// Show play button initially
+// Show character selection and play button initially
+game.addChild(character1Button);
+game.addChild(character2Button);
+game.addChild(character3Button);
+game.addChild(selectionBorder);
 game.addChild(playButton);
 ;
\ No newline at end of file