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

/**** 
* Classes
****/ 
// Particle class for jump/dash effects
var Particle = Container.expand(function () {
	var self = Container.call(this);
	var p = self.attachAsset('particle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.life = 30 + Math.random() * 20;
	self.vx = (Math.random() - 0.5) * 16;
	self.vy = -8 - Math.random() * 8;
	self.alpha = 1;
	self.update = function () {
		self.x += self.vx;
		self.y += self.vy;
		self.vy += 1.2;
		self.life--;
		self.alpha -= 0.03;
		if (self.life <= 0 || self.alpha <= 0) {
			self.destroy();
		}
	};
	return self;
});
// Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var cube = self.attachAsset('playerCube', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.width = cube.width;
	self.height = cube.height;
	self.velY = 0;
	self.isGrounded = false;
	self.jumpPower = -38;
	self.gravity = 3.2;
	self.alive = true;
	self.jumpQueued = false;
	// For jump effect
	self.jumpEffect = function () {
		tween(self, {
			scaleX: 1.2,
			scaleY: 0.8
		}, {
			duration: 80,
			easing: tween.cubicOut,
			onFinish: function onFinish() {
				tween(self, {
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 120,
					easing: tween.cubicIn
				});
			}
		});
	};
	// Called every tick
	self.update = function () {
		if (!self.alive) return;
		// Gravity
		self.velY += self.gravity;
		self.y += self.velY;
		// Clamp to ground
		if (self.y > groundY) {
			if (!self.isGrounded && Math.abs(self.velY) > 10) {
				// Only trigger on real landings, not just standing
				// Squash and stretch on landing
				tween(self, {
					scaleX: 1.25,
					scaleY: 0.7
				}, {
					duration: 60,
					easing: tween.cubicOut,
					onFinish: function onFinish() {
						tween(self, {
							scaleX: 1,
							scaleY: 1
						}, {
							duration: 120,
							easing: tween.cubicIn
						});
					}
				});
				// Screen shake effect
				LK.effects.shake(game, 12, 120);
				// Landing particles
				for (var i = 0; i < 8; i++) {
					var p = new Particle();
					p.x = self.x;
					p.y = groundY + 10;
					p.vx = (Math.random() - 0.5) * 18;
					p.vy = -6 - Math.random() * 6;
					p.alpha = 0.7 + Math.random() * 0.3;
					particles.push(p);
					game.addChild(p);
				}
			}
			self.y = groundY;
			self.velY = 0;
			self.isGrounded = true;
		} else {
			self.isGrounded = false;
		}
		// Jump if queued
		if (self.jumpQueued && self.isGrounded) {
			self.velY = self.jumpPower;
			self.isGrounded = false;
			self.jumpQueued = false;
			// Extra squash before jump for juice
			tween(self, {
				scaleX: 1.35,
				scaleY: 0.7
			}, {
				duration: 60,
				easing: tween.cubicOut,
				onFinish: function onFinish() {
					self.jumpEffect();
				}
			});
			// Burst of particles for jump
			for (var i = 0; i < 10; i++) {
				var p = new Particle();
				p.x = self.x;
				p.y = self.y - self.height / 2;
				p.vx = (Math.random() - 0.5) * 22;
				p.vy = -10 - Math.random() * 12;
				p.alpha = 1;
				particles.push(p);
				game.addChild(p);
			}
		}
	};
	// Call to queue a jump
	self.jump = function () {
		if (self.isGrounded && self.alive) {
			self.jumpQueued = true;
		}
	};
	// Call on death
	self.die = function () {
		self.alive = false;
		// Big screen shake
		LK.effects.shake(game, 32, 400);
		// Particle burst
		for (var i = 0; i < 24; i++) {
			var p = new Particle();
			p.x = self.x;
			p.y = self.y - self.height / 2;
			p.vx = (Math.random() - 0.5) * 32;
			p.vy = -12 - Math.random() * 18;
			p.alpha = 1;
			particles.push(p);
			game.addChild(p);
		}
		tween(self, {
			rotation: Math.PI * 2,
			alpha: 0
		}, {
			duration: 600,
			easing: tween.cubicIn
		});
	};
	return self;
});
// Obstacle (spike) class
var Spike = Container.expand(function () {
	var self = Container.call(this);
	var spike = self.attachAsset('spike', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.width = spike.width;
	self.height = spike.height;
	self.speed = 22;
	self.update = function () {
		self.x -= self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x181c2a
});

/**** 
* Game Code
****/ 
// Music
// Particle (small circle)
// Background effect (ellipse)
// Obstacle (spike)
// Ground platform
// Main player cube
// Game constants
var groundY = 2200;
var playerStartX = 420;
var playerStartY = groundY;
var gameSpeed = 22;
var spikeMinGap = 420;
var spikeMaxGap = 820;
var spikeTimer = 0;
var spikeGap = 0;
var score = 0;
var isGameActive = false;
var particles = [];
var spikes = [];
var bgEllipses = [];
var lastTick = 0;
// Background ellipses for visual effect
for (var i = 0; i < 3; i++) {
	var bg = LK.getAsset('bgEllipse', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024 + (i - 1) * 900,
		y: 1200 + i * 200,
		scaleX: 1.2 + i * 0.2,
		scaleY: 1.1 + i * 0.1,
		alpha: 0.18 + i * 0.07
	});
	game.addChild(bg);
	bgEllipses.push(bg);
}
// Ground
var ground = LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: groundY
});
game.addChild(ground);
// Player
var player = new Player();
player.x = playerStartX;
player.y = playerStartY;
game.addChild(player);
// Score text
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Animated title for menu
var titleTxt = new Text2('Dash of Geometry', {
	size: 160,
	fill: 0x00EAFF
});
titleTxt.anchor.set(0.5, 0.5);
titleTxt.x = 1024;
titleTxt.y = 900;
titleTxt.alpha = 1;
LK.gui.center.addChild(titleTxt);
// Tap to start text
var tapTxt = new Text2('Tap to Start', {
	size: 80,
	fill: 0xFFFFFF
});
tapTxt.anchor.set(0.5, 0.5);
tapTxt.x = 1024;
tapTxt.y = 1200;
tapTxt.alpha = 0.8;
LK.gui.center.addChild(tapTxt);
// Animate menu texts
tween(titleTxt, {
	y: 820
}, {
	duration: 900,
	easing: tween.elasticOut
});
tween(tapTxt, {
	alpha: 1
}, {
	duration: 800,
	easing: tween.cubicInOut
});
// Hide score at menu
scoreTxt.visible = false;
// Start game function
function startGame() {
	// Remove menu
	LK.gui.center.removeChild(titleTxt);
	LK.gui.center.removeChild(tapTxt);
	// Reset state
	isGameActive = true;
	score = 0;
	scoreTxt.setText(score);
	scoreTxt.visible = true;
	// Reset player
	player.x = playerStartX;
	player.y = playerStartY;
	player.velY = 0;
	player.alive = true;
	player.rotation = 0;
	player.alpha = 1;
	player.scaleX = 1;
	player.scaleY = 1;
	// Remove spikes
	for (var i = spikes.length - 1; i >= 0; i--) {
		spikes[i].destroy();
		spikes.splice(i, 1);
	}
	// Remove particles
	for (var i = particles.length - 1; i >= 0; i--) {
		particles[i].destroy();
		particles.splice(i, 1);
	}
	// Reset spike timer
	spikeTimer = 0;
	spikeGap = spikeMinGap + Math.random() * (spikeMaxGap - spikeMinGap);
	// Play music
	LK.playMusic('bgmusic', {
		fade: {
			start: 0,
			end: 1,
			duration: 1200
		}
	});
}
// End game function
function endGame() {
	isGameActive = false;
	player.die();
	LK.effects.flashScreen(0xff2d55, 600);
	LK.stopMusic();
	LK.setTimeout(function () {
		LK.showGameOver();
	}, 900);
}
// Particle spawn on jump
function spawnJumpParticles(x, y) {
	for (var i = 0; i < 8; i++) {
		var p = new Particle();
		p.x = x;
		p.y = y + 40;
		particles.push(p);
		game.addChild(p);
	}
}
// Particle spawn on score
function spawnScoreParticles(x, y) {
	for (var i = 0; i < 12; i++) {
		var p = new Particle();
		p.x = x;
		p.y = y;
		p.vx = (Math.random() - 0.5) * 24;
		p.vy = -12 - Math.random() * 10;
		p.alpha = 1;
		particles.push(p);
		game.addChild(p);
	}
}
// Main game update
game.update = function () {
	// Animate background ellipses
	for (var i = 0; i < bgEllipses.length; i++) {
		var bg = bgEllipses[i];
		bg.x -= 0.7 + i * 0.2;
		if (bg.x < -400) {
			bg.x = 2048 + 400;
		}
	}
	// Menu animation
	if (!isGameActive) {
		// Pulse tap text
		tapTxt.alpha = 0.7 + 0.3 * Math.sin(LK.ticks / 20);
		titleTxt.rotation = Math.sin(LK.ticks / 60) * 0.04;
		return;
	}
	// Player update
	player.update();
	// Spikes update
	for (var i = spikes.length - 1; i >= 0; i--) {
		var s = spikes[i];
		s.update();
		// Remove off-screen spikes
		if (s.x < -s.width) {
			s.destroy();
			spikes.splice(i, 1);
			continue;
		}
		// Collision with player
		if (player.alive && player.intersects(s)) {
			endGame();
			return;
		}
		// Score when passed
		if (!s.scored && s.x + s.width / 2 < player.x - player.width / 2) {
			s.scored = true;
			score++;
			scoreTxt.setText(score);
			spawnScoreParticles(player.x, player.y - player.height / 2);
			// Win condition
			if (score >= 30) {
				LK.effects.flashScreen(0x00eaff, 800);
				LK.showYouWin();
				return;
			}
		}
	}
	// Particles update
	for (var i = particles.length - 1; i >= 0; i--) {
		var p = particles[i];
		p.update();
		if (p.life <= 0 || p.alpha <= 0) {
			p.destroy();
			particles.splice(i, 1);
		}
	}
	// Spawn spikes
	spikeTimer += gameSpeed;
	if (spikeTimer > spikeGap) {
		spikeTimer = 0;
		spikeGap = spikeMinGap + Math.random() * (spikeMaxGap - spikeMinGap);
		var s = new Spike();
		s.x = 2048 + s.width / 2;
		s.y = groundY;
		s.scored = false;
		spikes.push(s);
		game.addChild(s);
	}
};
// Tap to jump or start
game.down = function (x, y, obj) {
	if (!isGameActive) {
		startGame();
	} else {
		player.jump();
	}
};
// Prevent drag
game.move = function (x, y, obj) {};
// On game over, show menu again
LK.on('gameover', function () {
	// Show menu
	LK.gui.center.addChild(titleTxt);
	LK.gui.center.addChild(tapTxt);
	scoreTxt.visible = false;
	tween(titleTxt, {
		y: 900
	}, {
		duration: 600,
		easing: tween.elasticOut
	});
	tween(tapTxt, {
		alpha: 1
	}, {
		duration: 600,
		easing: tween.cubicInOut
	});
});
// On win, show menu again
LK.on('youwin', function () {
	LK.gui.center.addChild(titleTxt);
	LK.gui.center.addChild(tapTxt);
	scoreTxt.visible = false;
	tween(titleTxt, {
		y: 900
	}, {
		duration: 600,
		easing: tween.elasticOut
	});
	tween(tapTxt, {
		alpha: 1
	}, {
		duration: 600,
		easing: tween.cubicInOut
	});
});

===================================================================
--- original.js
+++ change.js
@@ -90,9 +90,9 @@
 						});
 					}
 				});
 				// Screen shake effect
-				LK.effects.shakeScreen(12, 120);
+				LK.effects.shake(game, 12, 120);
 				// Landing particles
 				for (var i = 0; i < 8; i++) {
 					var p = new Particle();
 					p.x = self.x;
@@ -148,9 +148,9 @@
 	// Call on death
 	self.die = function () {
 		self.alive = false;
 		// Big screen shake
-		LK.effects.shakeScreen(32, 400);
+		LK.effects.shake(game, 32, 400);
 		// Particle burst
 		for (var i = 0; i < 24; i++) {
 			var p = new Particle();
 			p.x = self.x;