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

/**** 
* Classes
****/ 
// Ninja class
var Ninja = Container.expand(function () {
	var self = Container.call(this);
	var ninjaGfx = self.attachAsset('ninja', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// 0: left wall, 1: right wall
	self.wallSide = 0;
	// Current vertical speed (for jump animation)
	self.vy = 0;
	// Is currently jumping
	self.isJumping = false;
	// Called every tick
	self.update = function () {
		// Gravity effect (for jump arc)
		if (self.isJumping) {
			self.y += self.vy;
			self.vy += 2.5; // gravity
			// If reached or passed targetY, snap to targetY and stop jumping
			if (self.vy > 0 && self.y >= self.targetY || self.vy < 0 && self.y <= self.targetY) {
				self.y = self.targetY;
				self.isJumping = false;
				self.vy = 0;
			}
		}
	};
	// Start jump to other wall, upward by jumpHeight
	self.jump = function (jumpHeight, wallX) {
		if (self.isJumping) return;
		self.isJumping = true;
		self.wallSide = 1 - self.wallSide;
		self.targetY = self.y - jumpHeight;
		self.vy = -40; // initial jump velocity
		// Tween x to other wall
		tween(self, {
			x: wallX
		}, {
			duration: 120,
			easing: tween.cubicOut
		});
		// Play jump sound
		LK.getSound('jump').play();
	};
	return self;
});
// Obstacle class (spike, barrier, or laser)
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	// type: 'spike', 'barrier', or 'laser'
	self.type = 'spike';
	self.wallSide = 0; // 0: left, 1: right
	self.passed = false; // Has ninja passed this obstacle
	self.laserDir = 1; // Only used for laser
	self.laserRange = 0; // Only used for laser
	self.laserBaseX = 0; // Only used for laser
	// Set up asset
	self.setType = function (type) {
		self.type = type;
		if (self.asset) {
			self.removeChild(self.asset);
		}
		if (type === 'spike') {
			self.asset = self.attachAsset('spike', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		} else if (type === 'barrier') {
			self.asset = self.attachAsset('barrier', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		} else if (type === 'laser') {
			self.asset = self.attachAsset('barrier', {
				anchorX: 0.5,
				anchorY: 0.5,
				width: 40,
				height: 320,
				color: 0xff3366
			});
			self.laserDir = Math.random() < 0.5 ? 1 : -1;
			self.laserRange = 120;
			self.laserBaseX = 0;
		}
	};
	// Called every tick
	self.update = function () {
		// Obstacles move downward as the ninja climbs
		self.y += obstacleSpeed;
		if (self.type === 'laser') {
			if (self.laserBaseX === 0) self.laserBaseX = self.x;
			self.x += self.laserDir * 8;
			if (Math.abs(self.x - self.laserBaseX) > self.laserRange) {
				self.laserDir *= -1;
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x181818
});

/**** 
* Game Code
****/ 
// Game constants
// Ninja (player) - a small box, red
// Wall - tall, thin, gray
// Obstacle (spike) - yellow ellipse
// Obstacle (barrier) - blue box
// Sound for jump
var wallGap = 1200; // horizontal distance between walls
var wallMargin = 200; // margin from screen edge
var ninjaStartY = 2000;
var jumpHeight = 320; // vertical jump per tap
var obstacleMinGap = 400; // min vertical gap between obstacles
var obstacleMaxGap = 700; // max vertical gap between obstacles
var obstacleSpeed = 8; // how fast obstacles move down
var ninjaXLeft = wallMargin + 50; // center of left wall
var ninjaXRight = 2048 - wallMargin - 50; // center of right wall
// Walls
var leftWall = LK.getAsset('wall', {
	anchorX: 0.5,
	anchorY: 0
});
leftWall.x = wallMargin + leftWall.width / 2;
leftWall.y = 0;
game.addChild(leftWall);
var rightWall = LK.getAsset('wall', {
	anchorX: 0.5,
	anchorY: 0
});
rightWall.x = 2048 - wallMargin - rightWall.width / 2;
rightWall.y = 0;
game.addChild(rightWall);
// Ninja
var ninja = new Ninja();
ninja.x = ninjaXLeft;
ninja.y = ninjaStartY;
ninja.wallSide = 0;
game.addChild(ninja);
// Obstacles array
var obstacles = [];
// Score
var score = 0;
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// For touch input
var isGameStarted = false;
var isDead = false;
// For obstacle generation
var lastObstacleY = ninjaStartY - 500;
// Helper: generate a new obstacle above the last one
function spawnObstacle() {
	var obs = new Obstacle();
	// Randomly choose type: 40% spike, 40% barrier, 20% laser
	var r = Math.random();
	if (r < 0.4) {
		obs.setType('spike');
	} else if (r < 0.8) {
		obs.setType('barrier');
	} else {
		obs.setType('laser');
	}
	// Alternate wall side
	obs.wallSide = Math.random() < 0.5 ? 0 : 1;
	// X position
	obs.x = obs.wallSide === 0 ? ninjaXLeft : ninjaXRight;
	// Y position: above last obstacle
	var gap = obstacleMinGap + Math.random() * (obstacleMaxGap - obstacleMinGap);
	obs.y = lastObstacleY - gap;
	lastObstacleY = obs.y;
	// For barrier, offset horizontally so it sticks out from wall
	if (obs.type === 'barrier') {
		obs.x += obs.wallSide === 0 ? 90 : -90;
	}
	// For laser, center between walls and randomize offset
	if (obs.type === 'laser') {
		obs.x = (ninjaXLeft + ninjaXRight) / 2 + (Math.random() - 0.5) * 300;
		obs.wallSide = -1; // not attached to a wall
	}
	obstacles.push(obs);
	game.addChild(obs);
}
// Initial obstacles
for (var i = 0; i < 8; i++) {
	spawnObstacle();
}
// Move handler: tap anywhere to jump
game.down = function (x, y, obj) {
	if (isDead) return;
	if (!isGameStarted) {
		isGameStarted = true;
	}
	// Only allow jump if not already jumping
	if (!ninja.isJumping) {
		// Jump to other wall
		var targetX = ninja.wallSide === 0 ? ninjaXRight : ninjaXLeft;
		ninja.jump(jumpHeight, targetX);
	}
};
// Main update loop
game.update = function () {
	if (isDead) return;
	// Ninja update
	ninja.update();
	// Move obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obs = obstacles[i];
		obs.update();
		// Remove obstacles that are off screen
		if (obs.y > 2732 + 100) {
			obs.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Check for collision (only if ninja is not jumping, i.e. landed)
		if (!ninja.isJumping && !obs.passed) {
			// Only check obstacles on the same wall as ninja
			if (obs.wallSide === ninja.wallSide) {
				// Use accurate collider: LK's .intersects() for all obstacle types
				if (ninja.intersects(obs)) {
					isDead = true;
					LK.effects.flashScreen(0xff0000, 800);
					LK.showGameOver();
					return;
				}
			}
			// Also check for laser collision regardless of wall side
			if (obs.type === 'laser') {
				if (ninja.intersects(obs)) {
					isDead = true;
					LK.effects.flashScreen(0xff0000, 800);
					LK.showGameOver();
					return;
				}
			}
		}
		// Score: passed obstacle (only once per obstacle)
		if (!obs.passed && ninja.y < obs.y) {
			obs.passed = true;
			score += 1;
			LK.setScore(score);
			scoreTxt.setText(score);
		}
	}
	// Camera: move everything down as ninja climbs
	if (ninja.y < 1000) {
		var dy = 1000 - ninja.y;
		ninja.y += dy;
		for (var i = 0; i < obstacles.length; i++) {
			obstacles[i].y += dy;
		}
		lastObstacleY += dy;
	}
	// Spawn new obstacles if needed
	while (lastObstacleY > -200) {
		spawnObstacle();
	}
};
// Reset game state on game over (handled by LK, but for safety)
game.onDestroy = function () {
	obstacles = [];
	isGameStarted = false;
	isDead = false;
	score = 0;
	LK.setScore(0);
};

===================================================================
--- original.js
+++ change.js
@@ -242,8 +242,17 @@
 					LK.showGameOver();
 					return;
 				}
 			}
+			// Also check for laser collision regardless of wall side
+			if (obs.type === 'laser') {
+				if (ninja.intersects(obs)) {
+					isDead = true;
+					LK.effects.flashScreen(0xff0000, 800);
+					LK.showGameOver();
+					return;
+				}
+			}
 		}
 		// Score: passed obstacle (only once per obstacle)
 		if (!obs.passed && ninja.y < obs.y) {
 			obs.passed = true;