DD-Dicetron is a (yet another) dice throwing bot for Discord.
I wrote it because I was frustrated with an available bot not having a flexible enough syntax. And I wanted an excuse to try Dlang's Pegged library.
As it turns out, Dlang has, at the time of writing, no "solid" Discord libs. Didn't want to debug one myself so I thought I'd just stick a Python server in front of the D binary and ship it as a Docker container.
dd-dice has the D program that does the parsing and interpreting
dicetron has the Python bindings to the libs that do the heavy lifting of
connecting to Discord
Together they are.. DD-Dicetron!
Parsing of arbitrary comparisons, Python-style chaining
$ dd-dice '20 <= 2d20+5 <= 35'
20<=[6+1]+5<=35: Failure
Filtering with function calls (and with UFCS, f(x) is equivalent to x.f)
$ dd-dice '4d20.best(3).worst(2)'
[7+5+1+15].best(3).worst(2): 12
Some function use lambdas as predicates:
$ dd-dice '4d20.filter(d=>d>10).map(it=>it+1d4)'
[2+19+9+16].filter(d => d>10).map(it => it+1d4): 42
Custom dice are supported instead of d<number>:
$ dd-dice 'd[film, "board games"] + d["🍕", "🍔", "🥗"]'
[board games]+[🍔]: board games, 🍔
It attempts to tell you what your rolls were, but that gets complicated when you feed results of a roll into another.
- Install the D development suite (a D compiler + DUB)
cd dd-dicedub run -- '1d20'runs the program- the source is in
source/
NodeJS application to handle connecting to Discord, based on https://github.com/discord/discord-example-app.
My usage is not advanced so I tried implementing it in vibe-d but D has no turnkey crypto library for verifying the calls from Discord.
You can test commands by running the server in dev mode:
DEV_MODE=true node src/app.js.. and POSTing requests to it:
curl http://localhost:3000/interactions -H "Content-Type: application/json" --data '{"type": 2, "id": "0", "data": {"name": "roll", "options":[{"value": "3d4"}]}}'To run the full discord app:
printf 'APP_ID=%s\nDISCORD_TOKEN=%s\nPUBLIC_KEY%s\n' YOUR_APP_ID YOUR_DISCORD_TOKEN YOUR_PUBLIC_KEY > .env
printf 'DD_DICE_PATH=%s\n' PATH_TO_DD_DICE_EXECUTABLE >> .env
npm run register
node src/app.js