Ville Sundell
59c4c033aa
It turned out, that a new WASM cartridge must be created prior to saving a new one, in order to prevent the default Lua code running, instead of the WASM code.
Rust Starter Project Template
Important Note
Don't access TIC-80's I/O memory by dereferencing raw pointers. The optimiser will ruin attempts to do this, because Rust has no equivalent to C's volatile for direct access. Instead, use std::ptr::read_volatile and std::ptr::write_volatile, or just use the standard TIC-80 peek/poke.
This is a Rust / TIC-80 starter template. Before using it, make sure you have installed the wasm32-unknown-unknown target using rustup:
rustup target add wasm32-unknown-unknown
Then, to build a cart.wasm file, run:
cargo build --release
To import the resulting WASM to a cartridge named game.tic:
tic80 --fs . --cmd 'new wasm & import binary target/wasm32-unknown-unknown/release/cart.wasm & save game'
Or from the TIC-80 console:
new wasm
import binary target/wasm32-unknown-unknown/release/cart.wasm
save game
This is assuming you've run TIC-80 with --fs . inside your project directory.
wasm-opt
It is highly recommended that you run wasm-opt on the output cart.wasm file, especially if using the usual unoptimised builds. To do so, make sure wasm-opt is installed, then run:
wasm-opt -Os target/wasm32-unknown-unknown/release/cart.wasm -o cart.wasm
This will create a new, smaller cart.wasm file in the working directory.