This is the start of an implementation of the good old video game
Space Invaders.

Author: Thomas Hallgren <hallgren@cs.chalmers.se>

There are two versions:

SpaceInvaders
=============

To run this you need a color screen and a very fast machine (like a
Sparc 10 or a DEC ALPHA).

You control the gun with the mouse buttons:

	left button = move left,
	right button = move right,
	middle button = fire.


An overview of the implementation can be found in a paper available as a
postscript file by ftp from

	ftp.cs.chalmers.se:pub/users/hallgren/wm94.ps.Z



SpaceInvaders2
==============

A more efficient implementation. All drawing is done in one window (see
WorldF.hs).

Other improvements:

	- the invaders are animated (toggle between two pictures).
	- the invaders move faster when there are fewer left.

Author: Thomas Hallgren <hallgren@cs.chalmers.se>