var Base = Container.expand(function () {
	var self = Container.call(this);
	self.health = 100;
	self.updateHealth = function () {};
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.createAsset('enemy', 'Enemy Graphics', .5, .5);
	self.speed = 2;
	self.move = function () {
		self.y += self.speed;
	};
	self.attack = function () {};
	self.on('down', function () {
		self.destroy();
		var gameInstance = self.parent;
		if (gameInstance && gameInstance.enemies) {
			var index = gameInstance.enemies.indexOf(self);
			if (index > -1) {
				gameInstance.enemies.splice(index, 1);
				gameInstance.coins += 1;
				gameInstance.coinDisplay.setText('Coins: ' + gameInstance.coins);
			}
		}
	});
});
var Spawner = Container.expand(function (x, y) {
	var self = Container.call(this);
	var spawnerGraphics = self.createAsset('spawner', 'Spawner Graphics', .5, .5);
	self.x = x;
	self.y = y;
	self.spawnEnemy = function () {
		var enemy = new Enemy();
		enemy.x = self.x;
		enemy.y = self.y;
		self.parent.enemies.push(enemy);
		self.parent.addChild(enemy);
	};
});
var Tower = Container.expand(function () {
	var self = Container.call(this);
	var towerGraphics = self.createAsset('tower', 'Tower Graphics', 0.5, 0.5);
	self.x = 2048 / 2;
	self.y = 2732 / 2 - towerGraphics.height / 2;
	self.addChild(towerGraphics);
	self.on('down', function (obj) {});
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	self.enemies = [];
	var background = self.createAsset('background', 'Game Background', 0, 0);
	background.width = LK.stage.width;
	background.height = LK.stage.height;
	self.coins = 0;
	self.coinDisplay = new Text2('Coins: 0', {
		size: 100,
		fill: "#ffffff",
		align: 'center',
		stroke: '#000000',
		strokeThickness: 6
	});
	self.coinDisplay.anchor.set(0.5, 0.5);
	self.coinDisplay.x = 2048 / 2;
	self.coinDisplay.y = 1600;
	LK.gui.addChild(self.coinDisplay);
	self.resetCoins = function () {
		self.coins = 0;
	};
	self.resetCoins();
	var base = self.addChild(new Base());
	var bullets = [];
	base.x = 2048 / 2;
	base.y = 2732 - base.height / 2;
	var spawner1 = self.addChild(new Spawner(2048 / 6 + 200, 200));
	var spawner2 = self.addChild(new Spawner(2048 / 2 + 100, 200));
	var spawner3 = self.addChild(new Spawner(2048 / 6 * 5, 200));
	var spawner1Timer = LK.setInterval(function () {
		spawner1.spawnEnemy();
	}, 3000);
	spawner1.spawnEnemy();
	var spawner2Timer = LK.setInterval(function () {
		spawner2.spawnEnemy();
	}, 4000);
	spawner2.spawnEnemy();
	var spawner3Timer = LK.setInterval(function () {
		spawner3.spawnEnemy();
	}, 5000);
	spawner3.spawnEnemy();
	self.on('down', function (obj) {});
	LK.on('tick', function () {
		for (var i = 0; i < self.enemies.length; i++) {
			self.enemies[i].move();
			if (self.enemies[i].intersects(base)) {
				self.enemies[i].attack();
				self.enemies[i].destroy();
				self.enemies.splice(i, 1);
				i--;
			}
		}
		if (base.health <= 0 || self.enemies.some(enemy => enemy.y >= 2732 - enemy.height / 2)) {
			LK.gui.removeChild(self.coinDisplay);
			self.resetCoins();
			LK.showGameOver();
		}
	});
});

===================================================================
--- original.js
+++ change.js
@@ -18,10 +18,10 @@
 			var index = gameInstance.enemies.indexOf(self);
 			if (index > -1) {
 				gameInstance.enemies.splice(index, 1);
 				gameInstance.coins += 1;
+				gameInstance.coinDisplay.setText('Coins: ' + gameInstance.coins);
 			}
-			gameInstance.coinDisplay.setText('Coins: ' + gameInstance.coins);
 		}
 	});
 });
 var Spawner = Container.expand(function (x, y) {