Attribute Macro main 

#[main]

Macroquad entry point.

#[main("Window name")]
async fn main() {
}

fn window_conf() -> Conf {
    Conf {
        window_title: "Window name".to_owned(),
        fullscreen: true,
        ..Default::default()
    }
}
#[macroquad::main(window_conf)]
async fn main() {
}

Error handling

async fn main() can have the same signature as a normal main in Rust. The most typical use cases are:

• async fn main() {}
• async fn main() -> Result<(), Error> {} (note that Error should implement Debug)

When a lot of third party crates are involved and very different errors may happens, anyhow crate may help:

• async fn main() -> anyhow::Result<()> {}

For better control over game errors custom error type may be introduced:

#[derive(Debug)]
enum GameError {
    FileError(macroquad::FileError),
    SomeThirdPartyCrateError(somecrate::Error)
}
impl From<macroquad::file::FileError> for GameError {
    fn from(error: macroquad::file::FileError) -> GameError {
        GameError::FileError(error)
    }
}
impl From<somecrate::Error> for GameError {
    fn from(error: somecrate::Error) -> GameError {
        GameError::SomeThirdPartyCrateError(error)
    }
}