macroquad is a simple and easy to use game library for Rust programming language, heavily inspired by raylib.
macroquad attempts to avoid any Rust-specific programming concepts like lifetimes/borrowing, making it very friendly for Rust beginners. See the docs.
cargo clean takes only 16s on x230(~6years old laptop)Macroquad is a normal rust dependency, therefore an empty macroquad project may be created with:
```bash
cargo init --bin ```
Add macroquad as a dependency to Cargo.toml: ```toml
[dependencies] macroquad = "0.3" ```
Put some macroquad code in src/main.rs:
```rust
use macroquad::prelude::*;
async fn main() { loop { clear_background(RED);
draw_line(40.0, 40.0, 100.0, 200.0, 15.0, BLUE);
draw_rectangle(screen_width() / 2.0 - 60.0, 100.0, 120.0, 60.0, GREEN);
draw_circle(screen_width() - 30.0, screen_height() - 30.0, 15.0, YELLOW);
draw_text("IT WORKS!", 20.0, 20.0, 30.0, DARKGRAY);
next_frame().await
}
} ```
And to run it natively:
bash
cargo run
For more examples take a look on Macroquad examples folder
```bash
apt install pkg-config libx11-dev libxi-dev libgl1-mesa-dev libasound2-dev
dnf install libX11-devel libXi-devel mesa-libGL-devel alsa-lib-devel ```
On windows both MSVC and GNU target are supported, no additional dependencies required.
Also cross-compilation to windows from linux is supported:
```sh rustup target add x86_64-pc-windows-gnu
cargo run --target x86_64-pc-windows-gnu ```
sh
rustup target add wasm32-unknown-unknown
cargo build --target wasm32-unknown-unknown
This will produce .wasm file in target/debug/wasm32-unknown-unknown/CRATENAME.wasm or in target/release/wasm32-unknown-unknown/CRATENAME.wasm if built with --release.
And then use the following .html to load it:
index.html
```html
```
One of the ways to server static .wasm and .html:
sh
cargo install basic-http-server
basic-http-server .
tips
Adding the following snippet to your Cargo.toml ensures that all dependencies compile in release even in debug mode. In macroquad, this has the effect of making images load several times faster and your applications much more performant, while keeping compile times miraculously low.
toml
[profile.dev.package.'*']
opt-level = 3
While macroquad attempts to use as few Rust-specific concepts as possible, .await in all examples looks a bit scary.
Rust's async/await is used to solve just one problem - cross platform main loop organization.
details
The problem: on WASM and android it's not really easy to organize the main loop like this: ``` fn main() { // do some initialization
// start main loop
loop {
// handle input
// update logic
// draw frame
}
} ```
It is fixable on Android with threads, but on web there is not way to "pause" and "resume" WASM execution, so no WASM code should block ever. While that loop is blocking for the entire game execution! The C++ solution for that problem: https://kripken.github.io/blog/wasm/2019/07/16/asyncify.html
But in Rust we have async/await. Rust's futures is basically a continuations - future's stack may be store into a variable to later pause/resume execution of future's code.
async/await in macroquad is used without any external dependencies - no runtime, executor or even futures-rs are involved. It's just a way to preserve main's stack on WASM and keep the code cross platform without any WASM-specific main loop.
Macroquad is supported by:
