Day 14: Completed all basic alien graphics

All 7 basic alien types are complete, I just finished Catcher, while Humaniod and Scorpio was done yesterday evening. I also created some basic graphics for the shop, where you can buy upgrades.

I got some new ideas for boss aliens. One of them is a snake-like alien, and you body is composed of multiple parts, which you need to destroy separately.

The second one is alien boss creating alien bosses. Basically, if you don't destroy it on time, it will create another boss. This second boss spits regular aliens and moves downwards (to free the space for the next one).

Third boss is a special creature, able to multiply by division. When you shoot it, you get two identical aliens, each having half energy of the parent one. This division happens until you split them into 1-energy ones and shoot those.

Fourth boss is... well, let's leave some surprizes for when you play the game. I'm sure fourth boss will be very annoying to some players, until they figure out how it's behaving.

Allocate time for music

I spent rest of the day browsing for some free music. There are many sites, but listening to hundreds of tracks is really not fun. Most of the free stuff out there is junk. I found links to various sites recommended on /r/gamedev on Reddit and also in gamedev.stackexhange.com site and some indie sites. Except for Jamendo which is expensive, most of the free stuff is really bad.

I usually compose my own music, using MilkyTracker or some other tracker program. I got this habit from Amiga 500 and I feel at home when making .it or .s3m modules. But this time I decided I do not have time for that. It usually takes me about 3-4 weeks to create a decent track. I though about re-using some of my old tracks, but I already have used all of them in previous games - and none would really fit to be honest. I did find some good tunes by Kevin MacLeod, so I'm going to use those.

It looks like it really comes down to your own estimation. Whether you spend hours listening to different free tunes or you focus and make your own.

第十四天：完成所有基本的外星人图形

一共完成了7个基本的外星人类型，我是刚刚完成最后一个Catcher，而Humaniod和Scorpio是昨晚深夜才完成的。我也创建了一些商店的基本图形，用以购买更高等级的武器。

对于领袖级别的外星人我有了些新的想法。其中一个是一个蛇形的外星人，他的身体是由多个部分组成的，你需要彻底的摧毁才可以。

第二个则是一个可以产生领袖级别外星人的领袖。也就是说，如果不能在一定时间内摧毁它，它将制造一个新的外星人领袖。这第二个领袖定期的分裂出外星人并且向下移动（为下一个腾出空间）。
第三个BOSS是一个特殊的类型，能够进行分裂。当你射击它的时候，她会分裂为两个相同的外星人，每一个都有原来的一半能量。这样的分裂一直到你把他们分裂成1能量的个体，并射击它们。