Ghetto Image Converter for HGR modes

[Osgeld <osgeld@cheesefactory.us>]

I entered ludum dare last weekend, which is a 48 hour from scratch
game development compo, and I decided I was going to make an Apple II
"battleship" clone (since the theme was discovery) currently its 4
days past deadline and I am still fighting with it lol

anyway a half hour before the competition started, I decided I needed
a way to draw highres graphics and export them to the II, so I whipped
up this little ghetto system to do just that

Requirements:
PC running The Gimp
PC with lua 5.1 installed (older versions of the lua interpreter will
not work)
The Gimp palette file I made for the Apple II HGR colors
The Lua conversion script I made

Basic Rundown: you make a 280x192 or 280x160 graphic using the gimp
and the pallet, save it as a ppm file, edit the convert.lua file to
change what image file your working on, that spits out a ginormous
list of HPLOT and HCOLOR commands that you copy n paste (hopefully in
a emulator running as fast as it will go, otherwise prepare to be
bored ... for a long while)

Gimp pallet:
Apple-II.gpl  (save as)
open The Gimp, right click in the main window, choose Windows >
Dockable Dialogs > Palettes, this will open a pallets window, right
click on that window, and choose Import Palette, choose Palette file
and select the Apple-II.gpl file to install

Lua 5.1
debian based systems do sudo apt-get install lua5.1
MS windows download from http://luabinaries.sourceforge.net/download.html
and unzip to c:\lua

Graphics:
Make an image or convert an image using the supplied palette at
280x192 or 280x160 and save as a *.ppm file

Script:
convert.lua (save as)
edit the convert.lua file to point to the *.ppm file you are currently
wanting to convert, and save

The convert.lua script as posted needs to be in the same directory as
your ppm files !!
If your using windows, AND unzipped to the suggested location above
there is a "click n go" cmd file for you, everyone else will need to
run lua convert.lua OR lua5.1 convert.lua from the command line. This
reads the ppm file and produces a *.ppm_out file, which is just a
bucket-ton of basic statements

You can then copy and paste them into an Apple II system, BSAVE them
and recall them

BE WARNED!!
this produces tens of thousands of HPLOT and HCOLOR statements, I
strongly recommend you paste them into an emulator running at full
tilt warp speed, Apple II win can do it in a matter of seconds, but
needles in eyes speed at 1MHz, ALSO this does not account for any of
the funnier aspects of the Apple II video system, what you see in the
gimp is NOT what you get on the apple, but its close

Links:

Download here http://www.cheesefactory.us/apple2/gfxcv/
Screenshots here (apple IIc) http://www.cheesefactory.us/apple2/gfxcv/screenshots/

enjoy