Example

This example is provided as a guide for using a wit-bindgen guest written in Rust with Gravity.

1. Add the WebAssembly target

Gravity doesn't use WebAssembly itself, so you'll want to add the wasm32-unknown-unknown target to your toolchain.

rustup target add wasm32-unknown-unknown

2. Build the example to Core Wasm

Gravity currently needs a "Core Wasm" file with an embedded WIT custom section. This can be built using cargo build using the --target wasm32-unknown-unknown flag.

cargo build -p example-basic --target wasm32-unknown-unknown --release

3. Run Gravity against the Core Wasm file

Gravity can be run against the Wasm file produced in Rust's target/ directory.

cargo run --bin gravity -- --world basic --output examples/basic/basic.go target/wasm32-unknown-unknown/release/example_basic.wasm

4. Use the generate Go & Wasm files

The above command will produce a basic.go and basic.wasm file inside the examples/basic directory. These could be used within a Go project.