The thing I love about this system is either you already have the vim, WASD, and numberpad navigation rings memorized, or you don’t in which case having to learn this control scheme serves as a helpful visualization/conceptualization of the most common keyboard patterns used for software. It also means that this keyboard binding set will have the highest likelihood of working well out of the box for sophisticated software with carefully laid out and extensible control schemes.
Honestly I think this control method could be reasonably translated to a touchscreen as well with the right tools.
The below text is copied from my post on the lemmy instance Sopuli.xyz’s Steam Deck community. I thought I would share it here though too! I will respond to this post though, I just wanted to explain the linked post has the same text (+ more pictures because I can’t embed more than one photo as shamefully I have never made an account here).
Cataclysm DDA on The Steam Deck
link to video demonstration on Peertube instance
Steam Deck controller config available by renaming Cataclysm DDA in your steam library (added as a non-steam game) to Cataclysm: Dark Days Ahead and then searching under community layouts for “Cataclysm DDA full keyboard mapping”.
Vim Ring - my preference → left joystick (no reason these can’t be shuffled around tho)
The Vim hjkl keys (along with the diagonals y u n b because this is CDDA and we need those diagonals) provide a place to ground a Steam Deck mapping in, and unlike a Vimmer with a qwerty keyboard, we can unfold the keys into the navigational ring (up down left right) Vimmer’s imagine in their head to understand Vim qwerty controls.
Not only does this provide an easy way to remember our first choice in dividing the qwerty keyboard into Steam Deck mappings, because this first mapping is based on a conceptual perspective projected onto the qwerty keyboard made literal in the form of a navigational ring, it means that the control scheme we are building has plug and play compatibility with a dizzying array of software and games that all are part of Vim’s ~40 year? tradition and evolution of keyboard controls. Once you memorize the Vim Ring on your Steam Deck you will be able to use it for the rest of your life on joysticks and touchpads, and you can rest assured that other people will be developing vim hjkl based controls for software and games for the rest of your life.
WASD Ring - my preference → left trackpad
WASD is probably one of the most well known “conceptual projections” onto the qwerty keyboard.
It might seem a bittt confusing at first that z and x are the diagonals, but if you remember that this navigational ring is based on WASD, than s has to be down, and thus it becomes intuitive that z and x would be the downward diagonals. The letters q and e are almost without fail where left-lean, right-lean controls are for tactical shooters (for leaning out of cover to shoot) but even to someone unfamiliar with these control schemes, q and e are pretty intuitive.
Center Column
Notice here, that between the Vim and WASD rings is 2x3 column of unbound letters on the keyboard, those being c v, f g, and r t. The natural place for these letters which are frequently used by games and software is the four Steam Deck back buttons L5, R5, L4, R4 and the bumpers R1 and L1. True, vim prioritizes the horizontal home row, but given the accessibility of the other homerow keys in the VIM and WASD rings I don’t think this is a serious flaw especially because it is easy to visualize how this column maps to your Steam Deck.
Number Ring - my preference → right trackpad
Now for our last navigational ring. This ring was inspired by reading about players admitting to making the extremely chaotic-neutral choice of using the number row rather than the numberpad for navigation. We could just recreate the numberpad in a menu, but we already have two rings, and if anything nudging the numberpad into a ring shape makes activation from a touchpad or a joystick much more intuitive, it also expresses directly the meaning of the numberpad in terms of navigation while allowing quick access to each number for rapid input. Importantly, the number row keys not the numberpad keys are used here so that in conjunction with shift this ring can be used to activate the alt number row commands !@#$%^&*().
Caboose Board - my preference → right joystick
The Caboose Board is where the rest of the letters and punctuation keys go. I call this a “board” not a “ring” because more keys can be fit onto steam’s menu system by making two rows then making a ring, which provides a natural place for extensibility for additional critical keys needed only for a specific game or program.
Controller Face Buttons, and Left & Right Triggers.
At this point all the letters from the qwerty keyboard are mapped onto the onboard Steam Deck controls. We just need to tidy up and map a few remaining keys outside of the main 3 rows of the keyboard and make some quality of life mappings for important controls in Cataclysm DDA.
Up until this step, other than starting from the assumption that mouse control is unneeded for this mapping, I haven’t made any keyboard mappings that are only memorable or salient in the context of Cataclysm DDA. Only after this point am I actually assigning keys to the facebuttons of the Steam Deck based on the specific requirements of Cataclysm DDA. Think about how much easier this makes it to create and memorize the muscle memory of mappings for the next complicated game you want to tackle creating Steam Deck bindings for, if it is a roguelike or other game/software that can be played without a mouse than at least 85% of these mappings don’t need to be changed. If mouse control is needed, it is easy to imagine slotting the number ring into a toggleable alternate menu that shares the same control binding. Or the caboose.
These final mappings are pretty intended to be intuitive to someone who has used a gamepad a lot (especially xbox controller). Escape is mapped to the menu face button, tab to the view face button, backspace to the x facebutton of its counterpart, spacebar to the b facebutton, enter to the right trigger for CDDA and shift on the left trigger allows the shift key to easily be held like it is intended to be on a qwerty keyboard.
Some final quality of life tweaks for CDDA, a single press of the y facebutton activates the / key to bring up the advanced inventory management screen (absolutely amazingly powerful utility in CDDA) and a double press of the y facebutton activates they ? key to bring up list of commands with plain english search. A single press of the a facebutton is mapped to " which brings up the movement toggle (run, walk, crouch, prone). A double press brings up the mutations menu with [ (a somewhat tenous mapping to remember I concede, this is a draft tho). For now I have the thumbstick buttons mapped to + and -.
A Final Note On Menus
It is important to adjust the in menu sensitivity especially for navigational rings like the Vim Ring, WASD Ring and Number Ring. Typically for a ring assigned to a joystick one might want to set menu button activation to continous (with these repeat turbo settings) and tweak sensitivity so it is easy to reach the menu buttons on the far edges of the menu without it being uncomfortable or resulting in accidental activations of other keys.