var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.createAsset('hero', 'Hero character', .5, .5);
	self.move = function () {};
	self.shoot = function () {};
});
var EnemyWave1 = Container.expand(function (enemyCount) {
	var self = Container.call(this);
	self.enemyCount = 10;
	var enemyGraphics = self.createAsset('enemyWave1', 'Enemy Wave 1 character', .5, .5);
	self.move = function (heroX, heroY) {
		var dx = heroX - this.x;
		var dy = heroY - this.y;
		var magnitude = Math.sqrt(dx * dx + dy * dy);
		this.x += dx / magnitude * 2;
		this.y += dy / magnitude * 2;
	};
});
var EnemyWave2 = Container.expand(function (enemyCount) {
	var self = Container.call(this);
	self.enemyCount = 3;
	var enemyGraphics = self.createAsset('enemyWave2', 'Enemy Wave 2 character', .5, .5);
	self.move = function (heroX, heroY) {
		var dx = heroX - this.x;
		var dy = heroY - this.y;
		var magnitude = Math.sqrt(dx * dx + dy * dy);
		this.x += dx / magnitude * 2;
		this.y += dy / magnitude * 2;
	};
});
var EnemyWave3 = Container.expand(function (enemyCount) {
	var self = Container.call(this);
	self.enemyCount = 4;
	var enemyGraphics = self.createAsset('enemyWave3', 'Enemy Wave 3 character', .5, .5);
	self.move = function (heroX, heroY) {
		var dx = heroX - this.x;
		var dy = heroY - this.y;
		var magnitude = Math.sqrt(dx * dx + dy * dy);
		this.x += dx / magnitude * 2;
		this.y += dy / magnitude * 2;
	};
});
var EnemyWave4 = Container.expand(function (enemyCount) {
	var self = Container.call(this);
	self.enemyCount = 20;
	var enemyGraphics = self.createAsset('enemyWave4', 'Enemy Wave 4 character', .5, .5);
	self.move = function () {};
});
var EnemyWave5 = Container.expand(function (enemyCount) {
	var self = Container.call(this);
	self.enemyCount = 1;
	var enemyGraphics = self.createAsset('enemyWave5', 'Enemy Wave 5 character', .5, .5);
	self.move = function () {};
});
var HeroBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.createAsset('heroBullet', 'Hero Bullet', .5, .5);
	self.move = function (heroX, heroY) {
		var dx = heroX - this.x;
		var dy = heroY - this.y;
		var magnitude = Math.sqrt(dx * dx + dy * dy);
		this.x += dx / magnitude * 2;
		this.y += dy / magnitude * 2;
	};
});
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.createAsset('enemyBullet', 'Enemy Bullet', .5, .5);
	self.move = function (heroX, heroY) {
		var dx = heroX - this.x;
		var dy = heroY - this.y;
		var magnitude = Math.sqrt(dx * dx + dy * dy);
		this.x += dx / magnitude * 2;
		this.y += dy / magnitude * 2;
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	self.getEnemyCountForWave = function (waveIndex) {
		switch (waveIndex % 5) {
			case 0:
				return 10;
			case 1:
				return 3;
			case 2:
				return 4;
			case 3:
				return 20;
			case 4:
				return 1;
		}
	};
	var hero = self.addChild(new Hero());
	var enemies = [];
	var waveIndex = 0;
	var waveTimer = 200;
	var waveInterval = 1000;
	var heroBullets = [];
	var enemyBullets = [];
	hero.x = 2048 / 2;
	hero.y = 2732 / 2;
	LK.on('tick', function () {
		hero.move();
		waveTimer++;
		if (waveTimer >= waveInterval) {
			for (var i = 0; i < self.getEnemyCountForWave(waveIndex); i++) {
				var newEnemy;
				var enemyCount = self.getEnemyCountForWave(waveIndex);
				switch (waveIndex % 5) {
					case 0:
						newEnemy = new EnemyWave1(enemyCount);
						break;
					case 1:
						newEnemy = new EnemyWave2(enemyCount);
						break;
					case 2:
						newEnemy = new EnemyWave3(enemyCount);
						break;
					case 3:
						newEnemy = new EnemyWave4(enemyCount);
						break;
					case 4:
						newEnemy = new EnemyWave5(enemyCount);
						break;
				}
				newEnemy.x = Math.random() * 2048;
				newEnemy.y = -100;
				enemies.push(newEnemy);
				self.addChild(newEnemy);
			}
			waveIndex++;
			waveTimer = 0;
		}
		for (var i = 0; i < enemies.length; i++) {
			enemies[i].move(hero.x, hero.y);
		}
		for (var i = 0; i < heroBullets.length; i++) {
			heroBullets[i].move();
		}
		for (var i = 0; i < enemyBullets.length; i++) {
			enemyBullets[i].move();
		}
	});
	stage.on('down', function (obj) {
		var pos = obj.event.getLocalPosition(self);
		hero.x = pos.x;
		hero.y = pos.y;
		hero.shoot();
	});
});

===================================================================
--- original.js
+++ change.js
@@ -93,9 +93,9 @@
 	var hero = self.addChild(new Hero());
 	var enemies = [];
 	var waveIndex = 0;
 	var waveTimer = 200;
-	var waveInterval = 200;
+	var waveInterval = 1000;
 	var heroBullets = [];
 	var enemyBullets = [];
 	hero.x = 2048 / 2;
 	hero.y = 2732 / 2;