# Marble Machinations

logic mostly like https://git.crispypin.cc/CrispyPin/marble

## todo
### meta
- itch page text
- engine tests
### game
- comments
- highlight regions with background colours
- accessibility
  - ui scaling
  - background colour setting
  - configurable hotkeys
  - hotkeys for everything (no mouse needed to play)
  - font selection (probably a lot of work)
- more levels
- footprint and bounding box stats (instead of area)
- scroll output bytes
- cut selections, copy to system clipboard
- timestamps in solutions and blueprints
- lock tile types for early levels to make it less overwhelming
- display tool variant more clearly (it's not obvious there are more states)
- better text rendering
### online stuff
- store scores in server
- validate solutions in server (with limits)
- show histograms
- author name in solutions and blueprints
#### undecided
- option to use 8-bit marbles?
- blueprint rotation?
- changable marble start direction?

## playtesting observations
- 'loops' introduces too many things (powering, redirection, generating zeroes)
- players expect buttons to be triggered even when theres something blocking the marble on the other side
- math tile is not intuitive

## file hierarchy
```
- assets/
- levels/
  - chapter_01.json
  - chapter_02.json
  - sandbox.json
- user/
  - solutions/
    - output/
      - solution_0.json
      - solution_1.json
    - copy_input/
      - solution_0.json
      - solution_3.json
  - blueprints
    - blueprint_0.json
```


## levels
### intro, basic mechanics
- output a zero (marble, output)
- output multiple numbers in sequence (digits)
- output zeroes forever (looping/arrows, button, silo output)
- copy the input (input)
- increment every number (math tiles)
- copy only odd input numbers (comparator, flipper)
### 0-terminated list processing
- copy the second list
- calculate list length (math, silo input)
- count instances of 5 in a list
- reverse a list (bouncing)
### text
- convert text to lowercase
- convert a number to decimal ascii
- parse an ascii number
### advanced list processing
- index a list
- reverse and return the first n elements of a list, with n given first
- add two lists element-wise
- sort a list