*`ATasm <http://atari.miribilist.com/atasm/>`_, which, while ostensibly an *Atari* macro assembler, produces generic 6502 code and can be used on any 6502 machine
*`lz4 <https://lz4.github.io/lz4/>`_, a compression program suitable for fast decompression on the 6502
*``fatfont128.dat`` - modification of Michael Pohoreski's font from his `HGR tutorial <https://github.com/Michaelangel007/apple2_hgr_font_tutorial>`_ to change a few text characters and add the maze tiles
*``kansasfest-hackfest.png`` - source for 3rd title card
*``kansasfest-hackfest.hgr`` - conversion to HGR binary data using tohgr and asmgen
*``player-missile-2.png`` - source for 2nd title card
*``player-missile-2.hgr`` - conversion to HGR binary data using asmgen
*``player-missile.png`` - source for 1st title card
*``player-missile.hgr`` - conversion to HGR binary data using asmgen
*``title.xcf`` - GIMP source image for title screen (4th title card upon load)
*``title.png`` - source for HGR conversion
*``title.hgr`` - conversion to HGR binary data using tohgr and asmgen
Prototyping
-----------
*``mazegen.py`` - python, curses based prototyping code for developing maze algorithm and enemy logic
* the graphics for the maze are tile-based, 7x8 tiles
* the maze is generated in text page 1 and copied to the HGR screens
* text page 1 is used as the reference for what should be drawn to or changed on the HGR screens
* page flipping is used
* the asmgen sprite compiler can be told to use damage, which reports back information about which bytes have changed when drawing the sprite
* the damage reported is actually text row/col so the fast font routine can copy the tiles over the damaged area
* players/amidars (actors) position is based the centers of each sprite, but location is tracked using the corresponding row/col in the text page and the pixel location within each tile
* Quinn Dunki's `sprite compiler <https://github.com/blondie7575/HiSprite>`_ and `my modifications <https://github.com/robmcmullen/asmgen>`_
* Michael Pohoreski's `HGR Font Tutorial <https://github.com/Michaelangel007/apple2_hgr_font_tutorial>`_
* Peter Ferrie's original `one sector boot loader <https://github.com/peterferrie/standard-delivery>`_ and `my modifications <https://github.com/robmcmullen/standard-delivery>`_
* Peter Ferrie's `LZ4 unpacker <http://pferrie.host22.com/misc/appleii.htm>`_
* Sheldon Simms' `PNG to HGR converter <http://wsxyz.net/tohgr.html>`_