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https://github.com/RiftTeam/multicolor

Converter for mulitcolor-mode on the TIC-80.
https://github.com/RiftTeam/multicolor

demoscene tic-80 tic80

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Converter for mulitcolor-mode on the TIC-80.

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README 

        
![mulTIColor Logo](https://repository-images.githubusercontent.com/474191033/6b4ec005-585c-4c27-a4f4-b6eea5f3b6ea)



mulTIColor

===========



A converter for multicolor-mode on the [TIC-80](https://tic80.com/).



The [TIC-80](https://tic80.com/) normaly supports a max. [resolution](https://github.com/nesbox/TIC-80/wiki/display) of 240 pixels x 136 pixels with a [palette](https://github.com/nesbox/TIC-80/wiki/palette) of 16 RGB-colors.

But it is possible to change the palette every scanline with some [tweaks](https://github.com/nesbox/TIC-80/wiki/palette#more-than-16-colors), resulting in max. 2176 or even 4216 colors on screen.



**mulTIColor** converts an image (240 x 136 pixels or smaller) to a version with max. 16 or 31 colors per line.

The result will be saved as an image and as a [Lua](https://www.lua.org)-script with all the palettes, pixels and a display-routine (when using the "o"-option). Images with 16 or less colors (indexed) will be converted too, but with a single palette.



Information

===========



To reduce the colors to 16/31 per line, there are 3 options by default to achieve this:

1. [PIL](https://pillow.readthedocs.io/en/stable/) (Python Image Library, built-in)

2. [IrfanView](https://www.irfanview.com/) (external executable)

3. [ImageMagick](https://imagemagick.org/index.php) (external executable)



You might have to adjust the paths for [IrfanView](https://www.irfanview.com/) and [ImageMagick](https://imagemagick.org/index.php) in the configfile (**mtc.cfg**).

You can also add other converters or paths for a different operating system to the config aswell. Make sure to include the three keywords **{IN}**, **{OUT}** and **{RANGE}** to your entries. 

They ensure, that the current line of the image which is written to a temporary file can be converted and imported again afterwards. There is an optional keyword **{TEMPDIR}**, which can be used to store additional files for a converter like [IrfanView](https://www.irfanview.com/), if needed.



Based on the source image, all available options should be tried and the best result can be used directly.

But it is recommended to manually edit/optimize the best result by the creator of the original image.



When using the -o option, a .[lua](https://www.lua.org)-script will be generated (too), which contains the palettes and pixel data.

The **pal**-variable will contain 136 palettes with 16 or 31 RGB-colors, each in hex (from 00 to ff).

The **gfx**-variable will contain 240 x 136 pixels (color-index in hex, from 0 to f with 16 colors / from 00 to 1e with 31 colors).

When using [RLE (Run-length encoding)](https://en.wikipedia.org/wiki/Run-length_encoding) the palettes and pixels are stored in the **rlp**- and **rlg**-variable.



Requirements

============



- Python (3.6, or greater) - https://www.python.org/

- Pillow (Python Imaging Library) - https://pypi.org/project/Pillow/



Installation

============

If missing, **Pillow** can be installed using **pip** (for Python3).



Linux: 



    $ pip install pillow

Windows:



    $ python -m pip install pillow



Quickstart

==========



**mulTIColor** is easy to use and its really simple to convert an image to multicolor-mode.

Just run `multicolor` using the provided example images:



    $ multicolor.py piggie_power_without_the_price.png



    Generates a preview of the converted image, will be shown by the OS's default image viewer.



Specify an output name to generate the lua-script and save the preview:



    $ multicolor.py kittens.png -o smallcats

	

	The preview is saved as "smallcats-mtc.png" and the lua-script as "smallcats.lua".



Use a different converter to reduce the colors of the image per line:



    $ multicolor.py dryad.png -c iview -o resultsmyvary

	

	Have a look at the provided config file "mtc.cfg" for the paths and binaries.



Switch the range to 31 colors per line to get a, hopefully, better result:



    $ multicolor.py kittens.png -c iview -r 31 -o somemorecolors



Encode the pixel data as rle (run-length encoded) to save some space:



    $ multicolor.py kittens.png -o smallerscript -m rle



Set a bordercolor to prevent streaking (will reduce colors per line to 15/30):



    $ multicolor.py gameboys.png -o blackborder -b 0 0 0



Commandline options

===================



    $ multicolor.py --help

	

    Usage: multicolor imagefile [OPTION...]

    Generate TIC-80 multicolor images

    

    mandatory arguments:

      imagefile          imagefile with graphicsdata (e.g.: .png, .gif, etc.)

    

    optional arguments:

      -c, --converter    converter: pil (default), see mtc.cfg for more

      -o, --output       outputfile for multicolor values (.lua)

      -f, --force        force overwrite of outputfile when it already exist

      -r, --range        range of colors per line (16 or 31)

      -b, --bordercolor  bordercolor (R G B) to prevent streaking

      -m, --mode         mode to encode values: raw (default) or rle

      -v, --version      show version info

      -h, --help         show this help

    

    The optional arguments are only needed if the default setting does not meet the

    required needs. A specific name for the outputfile can be set (-o / --output).

    The maximum range (-r / --range) of colors per line, can be set to 16 or 31.

    To prevent colorstreaking in the border, a specific color (-b / --bordercolor)

    can be set. WARNING: this will reduce the overall colors to 15 or 30 per line!

	Mode (-m / --mode) to encode the pixel data via rle (run-length encoding) or as

	raw, which is the default. To reduce the colors of the image per line, various

	converters (-c / --converter) can be used. These can be configured in "mtc.cfg".

	Additional defined are: "iview" for IrfanView, "magick" for ImageMagick.

    

    examples:

	  multicolor imagefile.png

      multicolor graphic.gif -o multicolor.lua

      multicolor pixels.png -c iview -o mydata.lua

      multicolor colorful.gif -r 16 -o only16.lua

      multicolor border.jpg -r 31 -b 255 127 64 -o frame.lua

      multicolor truecol.png -m rle -o compress.lua

      multicolor logo.gif -o overwriteme.lua -f



Files

=====



* **multicolor.py** (the converter itself)

* **images/piggie_power_without_the_price.png** (example image (23960 colors), [original](https://demozoo.org/graphics/205191/) by [Bossman](https://demozoo.org/sceners/32053/)/[Rift](https://www.pouet.net/groups.php?which=11428))

* **images/kittens.png** (example image (23704 colors), [original](https://demozoo.org/graphics/302070/) by [Evil](https://demozoo.org/sceners/5794/)/[Accession](https://www.pouet.net/groups.php?which=1004))

* **images/dryad.png** (example image (17056 colors), [original](https://demozoo.org/graphics/266505/) by [Lycan](https://demozoo.org/sceners/21309/)/[LNX](https://www.pouet.net/groups.php?which=11760))

* **images/gameboys.png** (example image (18538 colors), [original](https://commons.wikimedia.org/wiki/File:Chiptune-Setup-Game-Boys.jpg) by [Lucius Kwok](https://www.flickr.com/photos/luciuskwok/))

* **images/replicaanxiety.png** (example image (16 indexed colors), [original](https://demozoo.org/graphics/3719/) by [Decca](https://demozoo.org/sceners/634/)/[Lego](https://www.pouet.net/groups.php?which=556))

* **components/display16.lua** (the display-routine for 16 colors per line)

* **components/display31.lua** (the display-routine for 31 colors per line)

* **components/display.lua** (the display-routine for 16 or less indexed colors)

* **components/rle-decoder16.lua** (the decoder when using rle-mode for 16 colors)

* **components/rle-decoder31.lua** (the decoder when using rle-mode for 31 colors)

* **components/rle-decoder.lua** (the decoder when using rle-mode for 16 or less indexed colors)



Disclaimer

==========



There is no warranty for the scripts or it's functionality, use it at your own risk.



The icon/logo consists of the [Sweetie 16](https://lospec.com/palette-list/sweetie-16)-palette © by [GrafxKid](https://grafxkid.tumblr.com/) & a [Shredder clipart](https://www.clipartmax.com/middle/m2H7N4d3G6N4b1H7_shredder-machine-icon-clipart-paper-office-shredders-shredder-machine-icon/) © by [Clipartmax](https://clipartmax.com/).



Bug tracker

===========



If you have any suggestions, bug reports or annoyances please report them to the issue tracker at https://github.com/RiftTeam/multicolor/issues



Contributing

============



Development of `mulTIColor` happens at GitHub: https://github.com/RiftTeam/multicolor