===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,177 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Character = Container.expand(function () {
+	var self = Container.call(this);
+	var characterGraphics = self.attachAsset('character', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		alpha: 0
+	});
+	// Random rotation
+	characterGraphics.rotation = Math.random() * Math.PI * 2;
+	// Store whether this character has been discovered
+	self.discovered = false;
+	self.lastDistance = 9999;
+	// Method to reveal character temporarily
+	self.reveal = function (intensity) {
+		// Intensity from 0 to 1 based on distance from sound wave
+		if (intensity > 0) {
+			var targetAlpha = Math.min(intensity, 0.8);
+			tween.to(characterGraphics, 0.2, {
+				alpha: targetAlpha
+			});
+			tween.to(characterGraphics, 1.5, {
+				alpha: 0,
+				delay: 0.2
+			});
+			// If character is very visible and wasn't discovered before
+			if (intensity > 0.6 && !self.discovered) {
+				self.discovered = true;
+				LK.getSound('discover').play();
+				// Visual feedback for discovery
+				var originalScale = characterGraphics.scale.x;
+				tween.to(characterGraphics.scale, 0.3, {
+					x: originalScale * 1.3,
+					y: originalScale * 1.3
+				});
+				tween.to(characterGraphics.scale, 0.3, {
+					x: originalScale,
+					y: originalScale,
+					delay: 0.3
+				});
+			}
+		}
+	};
+	return self;
+});
+var SoundWave = Container.expand(function () {
+	var self = Container.call(this);
+	var waveGraphics = self.attachAsset('ripple', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		alpha: 0.4
+	});
+	self.timeAlive = 0;
+	self.maxLifespan = 120; // 2 seconds at 60fps
+	self.update = function () {
+		if (!self.lastTimeAlive) {
+			self.lastTimeAlive = self.timeAlive;
+		}
+		self.timeAlive++;
+		// Expand the wave and fade it out
+		var progress = self.timeAlive / self.maxLifespan;
+		waveGraphics.scale.x = 1 + progress * 5;
+		waveGraphics.scale.y = 1 + progress * 5;
+		waveGraphics.alpha = 0.4 * (1 - progress);
+		// Remove when completed
+		if (self.timeAlive >= self.maxLifespan) {
+			self.destroy();
+			return;
+		}
+		self.lastTimeAlive = self.timeAlive;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
+// Create arrays to hold game elements
 var game = new LK.Game({
 	backgroundColor: 0x000000
-});
\ No newline at end of file
+});
+
+/**** 
+* Game Code
+****/ 
+// Create arrays to hold game elements
+var characters = [];
+var soundWaves = [];
+// Screen dimensions
+var screenWidth = 2048;
+var screenHeight = 2732;
+// Number of characters to create
+var characterCount = 15;
+// Create characters at random positions
+for (var i = 0; i < characterCount; i++) {
+	var character = new Character();
+	// Position randomly on screen with margins
+	character.x = Math.random() * (screenWidth - 400) + 200;
+	character.y = Math.random() * (screenHeight - 400) + 200;
+	// Set random scales for variety
+	var scale = 0.5 + Math.random() * 1.5;
+	character.scale.set(scale, scale);
+	game.addChild(character);
+	characters.push(character);
+}
+// Create instruction text
+var instructionText = new Text2("Tap anywhere to use echolocation", {
+	size: 70,
+	fill: 0xFFFFFF
+});
+instructionText.anchor.set(0.5, 0.5);
+instructionText.x = screenWidth / 2;
+instructionText.y = screenHeight / 2;
+game.addChild(instructionText);
+// Fade out instructions after a delay
+tween.to(instructionText, 2, {
+	alpha: 0,
+	delay: 3,
+	onComplete: function onComplete() {
+		instructionText.destroy();
+	}
+});
+// Create sound waves when tapping the screen
+game.down = function (x, y) {
+	// Create sound wave at tap position
+	var wave = new SoundWave();
+	wave.x = x;
+	wave.y = y;
+	game.addChild(wave);
+	soundWaves.push(wave);
+	// Play echo sound
+	LK.getSound('echo').play();
+	// Flash screen very slightly to indicate tap
+	LK.effects.flashScreen(0x333333, 200);
+};
+// Main update loop
+game.update = function () {
+	// Clean up destroyed waves
+	for (var i = soundWaves.length - 1; i >= 0; i--) {
+		if (!soundWaves[i].parent) {
+			soundWaves.splice(i, 1);
+		}
+	}
+	// Process character reveals based on wave proximity
+	for (var i = 0; i < characters.length; i++) {
+		var character = characters[i];
+		var closestDistance = 9999;
+		// Find closest wave to this character
+		for (var j = 0; j < soundWaves.length; j++) {
+			var wave = soundWaves[j];
+			// Calculate distance between character and wave
+			var dx = character.x - wave.x;
+			var dy = character.y - wave.y;
+			var distance = Math.sqrt(dx * dx + dy * dy);
+			// Adjust for wave size
+			var waveRadius = wave.getChildAt(0).width * wave.getChildAt(0).scale.x / 2;
+			var distanceFactor = Math.abs(distance - waveRadius) / 200;
+			// The character is most visible when at the edge of the wave
+			if (distanceFactor < 1 && distanceFactor < closestDistance) {
+				closestDistance = distanceFactor;
+			}
+		}
+		// Remember previous distance for state tracking
+		character.lastDistance = closestDistance;
+		// Reveal character based on proximity to wave
+		if (closestDistance < 1) {
+			character.reveal(1 - closestDistance);
+		}
+	}
+};
\ No newline at end of file