# marble machinations
(working title)

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

## todo
(more levels)
story/lore
copy/cut/paste selections
timestamps in solutions and blueprints
multiple input/output sets
undo/redo
make math tiles read digits
tooltips
lock tile types for early levels to make it less overwhelming
make a gui alternative to pressing R to rotate between tile variants
make marble movement more consistent (`>o o<` depends on internal marble order)
decide on marble data size (u32 or byte?)
blueprint rotation?

## file hierarchy
```
- assets/
- levels/
  - 00_zeroes.json
  - 01_cat.json
  - 02_parse.json
  - 99_sandbox.json
- user/
  - solutions/
    - 00_zeroes/
      - solution_0.json
      - solution_1.json
    - 01_cat/
      - solution_0.json
      - solution_3.json
  - blueprints
    - blueprint_0.json
```
## formats
### level
`00_zeroes.json`
```json
{
  "id": "00_zeroes",
  "sortorder": 5,
  "name": "Zeroes",
  "description": "learn how to output data",
  "init_board": null,
  "inputs": [],
  "outputs": [0, 0, 0, 0, 0, 0, 0, 0],
  "input_is_text": false,
  "output_is_text": false
}
```
### solution
`00_zeroes/solution_0.json`
```json
{
  "level_id": "00_zeroes",
  "solution_id": "solution_0",
  "name": "unnamed 1",
  "board": "oo\nP*\n|-",
  "score": {
    "cycles": 8,
    "tiles": 6,
    "area": 6,
  }
}
```
### blueprint
`blueprints/blueprint_0.json`
```json
{
  "id": "blueprint_0",
  "name": "zero_printer",
  "board": "o -B I\n> * < \n"
}
```

## levels
### intro, basic mechanics
- output a zero (marble, io)
- output multiple numbers in sequence (digits)
- output zeroes forever (looping, trigger, bag output)
- copy the input (input)
- copy only odd input numbers (comparator, math,   flipper)
### 0-terminated list processing
- copy the second list
- calculate list length (math, bag input)
- count instances of 5 in a list
- reverse a list (bouncing)
### user-friendly numbers
- convert a number to decimal ascii
- parse an ascii number
- convert text to lowercase
### advanced list processing
- index a list
- search a list
- add two lists element-wise
- sort list