===================================================================
--- original.js
+++ change.js
@@ -13,15 +13,17 @@
 	self.gravity = 1;
 	self.lift = -15;
 	self.isInAir = false;
 	self.flap = function () {
-		if (self.isInAir < 2) {
+		if (self.isInAir < 1 || self.isInAir === 1 && canDoubleJump) {
 			self.ySpeed = self.lift * 1.5;
 			self.isInAir += 1;
-			var shadow = game.addChild(new Shadow()); // Add a shadow particle
-			shadow.x = self.x; // Position the shadow at the bird's current position
-			shadow.y = self.y;
-			shadow.scale.x = self.scale.x; // Ensure the shadow graphics scale x matches the cats at the time it's spawned
+			if (showShadow) {
+				var shadow = game.addChild(new Shadow()); // Add a shadow particle
+				shadow.x = self.x; // Position the shadow at the bird's current position
+				shadow.y = self.y;
+				shadow.scale.x = self.scale.x; // Ensure the shadow graphics scale x matches the cats at the time it's spawned
+			}
 		}
 		if (bird.intersects(leftWall)) {
 			bird.xSpeed = 30; // Add positive x speed when bird jumps from the left wall
 		} else if (bird.intersects(rightWall)) {
@@ -95,8 +97,11 @@
 
 /**** 
 * Game Code
 ****/ 
+var canDoubleJump = true;
+var framesPerShadow = 4;
+var showShadow = true;
 game.score = 0;
 game.obstacleSpeed = 5;
 game.obstacleSpeedIncrease = 0.005;
 game.simulatedY = 0;
@@ -118,9 +123,8 @@
 }));
 var scoreText = new Text2('0', {
 	size: 150,
 	fill: '#ffffff',
-	font: 'Impact',
 	dropShadow: true,
 	dropShadowColor: '#222a9a',
 	dropShadowBlur: 5,
 	dropShadowDistance: 7,
@@ -129,10 +133,9 @@
 scoreText.anchor.set(.5, 0);
 LK.gui.top.addChild(scoreText);
 var scoreText2 = new Text2('0', {
 	size: 150,
-	fill: '#ffffff',
-	font: 'Impact'
+	fill: '#ffffff'
 });
 scoreText2.anchor.set(.5, 0);
 scoreText2.x = -4;
 scoreText2.y = -5;
@@ -182,9 +185,9 @@
 			game.children[i].destroy();
 		}
 	}
 	// Spawn the shadows every few frames, while the cat is in the air
-	if (bird.isInAir && LK.ticks % 4 == 0) {
+	if (bird.isInAir && showShadow && LK.ticks % framesPerShadow == 0) {
 		var shadow = game.addChildAt(new Shadow(), game.getChildIndex(bird)); // Add a shadow particle behind the bird
 		shadow.x = bird.x; // Position the shadow at the bird's current position
 		shadow.y = bird.y;
 		shadow.graphics.scale.x = bird.graphics.scale.x; // Ensure the shadow graphics scale x matches the bird at the time it's spawned