/**** 
* Classes
****/
// No assets are defined as this is a blank game
var Hero = Container.expand(function () {
	var self = Container.call(this);
	self.attachAsset('hero', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.direction = {
		x: 0,
		y: 0
	};
	self.checkCollision = function (trees) {
		for (var i = 0; i < trees.length; i++) {
			var treeBounds = trees[i].getBounds();
			var heroBounds = self.getBounds();
			if (heroBounds.x < treeBounds.x + treeBounds.width && heroBounds.x + heroBounds.width > treeBounds.x && heroBounds.y < treeBounds.y + treeBounds.height && heroBounds.height + heroBounds.y > treeBounds.y) {
				self.x -= self.direction.x * self.speed;
				self.y -= self.direction.y * self.speed;
				return true;
			}
		}
		return false;
	};
});
var Tree = Container.expand(function () {
	var self = Container.call(this);
	self.attachAsset('tree', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.direction = {
		x: 0,
		y: 0
	};
	self.move = function () {
		self.x += self.direction.x * self.speed;
		self.y += self.direction.y * self.speed;
	};
});

/**** 
* Initialize Game
****/
var game = new LK.Game({
	backgroundColor: 0x000000 // Initialize game with black background
});

/**** 
* Game Code
****/
var hero = game.addChild(new Hero());
hero.x = 2048 / 2;
hero.y = 2732 / 2;
// Create a text box to display hero's speed and direction
var heroInfo = new Text2('', {
	size: 50,
	fill: '#ffffff'
});
LK.gui.topRight.addChild(heroInfo);
var dragNode = null;
var trees = [];
function handleMove(obj) {
	var event = obj.event;
	var pos = event.getLocalPosition(game);
	if (dragNode) {
		var oldX = dragNode.x;
		var oldY = dragNode.y;
		dragNode.x += (pos.x - dragNode.x) * 0.05;
		dragNode.y += (pos.y - dragNode.y) * 0.05;
		if (dragNode === hero) {
			hero.direction.x = (pos.x - hero.x) / Math.sqrt(Math.pow(pos.x - hero.x, 2) + Math.pow(pos.y - hero.y, 2));
			hero.direction.y = (pos.y - hero.y) / Math.sqrt(Math.pow(pos.x - hero.x, 2) + Math.pow(pos.y - hero.y, 2));
			if (hero.checkCollision(trees)) {
				dragNode.x = oldX;
				dragNode.y = oldY;
			}
		}
	}
}
game.on('move', handleMove);
game.on('down', function (obj) {
	dragNode = hero;
	handleMove(obj);
});
// Update the text box every game tick
LK.on('tick', function () {
	heroInfo.setText('Speed: ' + hero.speed + ', Direction: (' + hero.direction.x.toFixed(2) + ', ' + hero.direction.y.toFixed(2) + ')');
});
game.on('up', function (obj) {
	dragNode = null;
});
game.on('rightdown', function (obj) {
	var bullet = game.addChild(new Bullet());
	bullet.x = hero.x;
	bullet.y = hero.y;
	bullet.direction = {
		x: hero.direction.x,
		y: hero.direction.y
	};
	bullet.speed = 100;
});
// Add trees
for (var i = 0; i < 10; i++) {
	var tree = game.addChild(new Tree());
	tree.x = Math.random() * 2048;
	tree.y = Math.random() * 2732;
}

===================================================================
--- original.js
+++ change.js
@@ -14,9 +14,11 @@
 		y: 0
 	};
 	self.checkCollision = function (trees) {
 		for (var i = 0; i < trees.length; i++) {
-			if (self.intersects(trees[i])) {
+			var treeBounds = trees[i].getBounds();
+			var heroBounds = self.getBounds();
+			if (heroBounds.x < treeBounds.x + treeBounds.width && heroBounds.x + heroBounds.width > treeBounds.x && heroBounds.y < treeBounds.y + treeBounds.height && heroBounds.height + heroBounds.y > treeBounds.y) {
 				self.x -= self.direction.x * self.speed;
 				self.y -= self.direction.y * self.speed;
 				return true;
 			}