Mandelbrot set generator for vanilla Minecraft in Rust using wasmcraft2 and my binding crate.
Usage:
cargo build --release
wasm-opt -O2 target/wasm32-unknown-unknown/release/mc_mandelbrot.wasm -o target/wasm32_unknown_unknown/release/mc_mandelbrot.opt.wasm
cd /path/to/wasmcraft2
cargo run --release -- /path/to/mc_mandelbrot/target/wasm32-unknown-unknown/release/mc_mandelbrot.opt.wasm -O0 -o ./datapack
cp -r datapack /path/to/.minecraft/saves/<world name>/datapacks/Enabling wasmcraft2's -O1 will probably cause wasmcraft2 to panic.
The maximum iterations per block, width, and position can be changed with the MAX_ITERATIONS, WIDTH, POS_X, POS_Y and POS_Z environment variables at compile time.
In Minecraft:
/reload
/gamerule maxCommandChainLength 100000000
/function wasmrunner:init
/function wasmrunner:_start
The gamerule only needs to be set once per world. /reload is only necessary if you copied/changed the datapack after loading the world.
The commands should be run close to (0, 0) as wasmcraft2 places a large amount of jukeboxes near (0, 0) to use as memory.