===================================================================
--- original.js
+++ change.js
@@ -91,8 +91,12 @@
 /**** 
 * Game Code
 ****/
 // Create static platforms
+var scoreTimer = LK.setInterval(function () {
+	LK.setScore(LK.getScore() + 1);
+	scoreTxt.setText(LK.getScore());
+}, 1000);
 var scoreTxt = new Text2('0', {
 	size: 150,
 	fill: "#ffffff"
 });
@@ -109,9 +113,9 @@
 var treeTrunks = [];
 for (var i = 0; i < 3; ++i) {
 	var treeTrunk = game.addChild(new TreeTrunk());
 	treeTrunk.x = 2048 / 2;
-	treeTrunk.y = i * treeTrunk.height;
+	treeTrunk.y = i * -treeTrunk.height;
 	treeTrunks.push(treeTrunk);
 }
 for (var i = 0; i < nbPlatform; i++) {
 	var platform = new Obstacle();
@@ -155,9 +159,9 @@
 			obstacles[i].y = obstacles[lastPlatformSpawned].height - gap;
 			obstacles[i].x = Math.random() * (2048 - obstacles[i].width);
 			obstacles[i].width = (Math.random() * (0.3 - 0.1) + 0.1) * 2048;
 			if (platformSpeed < 20) {
-				platformSpeed += 1;
+				platformSpeed += 0.1;
 			}
 			lastPlatformSpawned = i;
 			for (var i = 0; i < obstacles.length; i++) {
 				obstacles[i].speedY = platformSpeed;
@@ -165,8 +169,11 @@
 		}
 	}
 	for (var i = 0; i < 3; ++i) {
 		treeTrunks[i].update();
+		if (treeTrunks[i].y > 2732) {
+			treeTrunks[i].y = treeTrunks[(i + 2 + treeTrunks.length) % treeTrunks.length].y - treeTrunk.height;
+		}
 	}
 	// Game over when hero touches bottom of the screen
 	if (hero.y >= 2732 - hero.height) {
 		LK.showGameOver();