This is a straightforward port of aliens-luasdl-0.3 to ysdl. ysdl is
a lightweight, not-feature-complete Lua-SDL binding, written by Sean
Bolton, available at:

http://smbolton.com/lua.html

The original aliens-luasdl (and LuaSDL itself) are available at:

http://luaforge.net/projects/luasdl/

Both the original (aliens for LuaSDL) and this port (aliens for
ysdl) are available under the GNU General Public License version 2.
See the file COPYING for details.

This port can be run using the minimal-main.c program that comes
with ysdl.  On a unix-ish system (e.g. linux or Mac OS X), compile
it something like this:

$ gcc -Wall -O2 -g -o ysdl-minimal-main minimal-main.c ysdl.c \
    -DYSDL_WANT_MIXER -DYSDL_WANT_IMAGE -llua \
    `sdl-config --cflags --libs` -lSDL_mixer -lSDL_image

And run it something like this:

$ cd aliens-lua_ysdl_port-0.3r1
$ ysdl-minimal-main aliens-ysdl.lua

The original README file from aliens-luasdl-0.3 is below.
==============================================================================

A silly little invading aliens type game -- just an example of using SDL
with the mixer library.

You only get one life -- stop those aliens from landing on you!
Keys:
	<space>		Fire (3 shots available)
	<right arrow>	Move right
	<left arrow>	Move left
	<escape>	Quit the game

This example is available under the GNU General Public License version 2.

------------------------------------------------------------------------

Ported in a straightforward manner to LuaSDL 0.3.0 by Kein-Hong Man
<khman@users.sf.net>, first ran on 20070130.

For the port, many arrays have been changed to start with 1 instead of
zero. I still don't know whether that's a good idea or not.

------------------------------------------------------------------------

aliens-luasdl-0.1	* initial release
aliens-luasdl-0.2	* fixed SDL_UpdateRects in LuaSDL, accepts a table
			  of SDL_Rects now
			* dummy SDL_ttf, for smaller binary downloads
aliens-luasdl-0.3	* adjusted copyright messages
			* updated SDL, SDL_* libraries
