A small set of sources and tools for the Gameboy Development Kit by Michael Hope

http://gbdk.sourceforge.net/

It includes a Java application to export images to sprites and background in gbdk and some C sources, adding some useful functions to the gbdk library.

It's divided in 2 components:

TILE EDITOR:

-Export png\bmp\jpeg\tiff images to efficient assembly and C code for GBDK.

-Create maps and tileset starting from an image.

-Compress tiles in an RLE-like format

C LIBRARY:

-Various functions to setup metasprites. Metasprites are sets of sprites that can be moved all together to simulate the existance a bigger sprite.

-An improved set_bkg_data to load RLE compressed tilesets.

Here's a sample game that uses this library: https://github.com/ProGM/doctorhow