Invasion - Demo

I'm using Psyco now and it runs much faster.

Thread programming isn't that hard. here is an example:

import threading
def test(): print "hi!"
thread = threading.Thread(target=test)
thread.start()

the program prints: hi!
Of course, some things in threads don't work as expected.

I'll make data folders etc. I'm not sure how to do multi-threaded programming. I've been looking for something like the DirtySprite stuff, so I'll try and use that. Thanks for the help!

Second: Damn that's really long.
Before even thinking about using threading (seriously, this is no topic for beginner), try to improve the rendering functions. Using caching for the font-rendering, which can be a major speed issue. Don't draw the background every frame, have a look at DirtySprites/LayeredDirty in the documentation.

First: Damn that program is long.
Anyways, I didn't look through the entire program, but you might want to think about only displaying and updating a tile if it is on the screen. Here are my suggestions:

1. Make the tiles only appear if they are on the screen. One way to do this is to have sections of tiles, or a t least different drawing groups.

2. Use threads. From the look of it, you are using no threads. Threads will speed up the game a lot.

3. Consolidate all the images into one, and split them up again when the game loads.

4. Use a separate folder for data. Seriously.

5. Use psyco to run this game. Ahead of that, this game needs MAJOR speed improvements. I'm using an AMD Phenom II Black Edition with 3.4 Gigahertz, and it still lags.