bevy/examples/remote/client.rs
MevLyshkin 897ffad8af
BRP strict field in query (#16725)
# Objective

- Allow skiping components that don't have ComponentId yet instead of
failing `bevy/query` request.

## Solution

- Describe the solution used to achieve the objective above.

## Testing

My naive approach boils down to:
- bevy/list to get list of all components.
- bevy/query with empty components and has fields and a option that
contains result of the bevy/list.

Before that change I end up with bunch of `Component xxx isn't used in
the world` because some of the components wasn't spawned at any moment
yet in the game. Now it should work.

## Migration Guide

- `BrpQueryParams` now has `strict` boolean field. It serfs as a flag to
fail when encountering an invalid component rather than skipping it.
Defaults to false.
2024-12-14 05:22:19 +00:00

75 lines
2.3 KiB
Rust

//! A simple command line client that allows issuing queries to a remote Bevy
//! app via the BRP.
use anyhow::Result as AnyhowResult;
use argh::FromArgs;
use bevy::remote::{
builtin_methods::{BrpQuery, BrpQueryFilter, BrpQueryParams, BRP_QUERY_METHOD},
http::DEFAULT_ADDR,
http::DEFAULT_PORT,
BrpRequest,
};
/// Struct containing the command-line arguments that can be passed to this example.
///
/// The components are passed by their full type names positionally, while `host`
/// and `port` are optional arguments which should correspond to those used on
/// the server.
///
/// When running this example in conjunction with the `server` example, the `host`
/// and `port` can be left as their defaults.
///
/// For example, to connect to port 1337 on the default IP address and query for entities
/// with `Transform` components:
/// ```text
/// cargo run --example client -- --port 1337 bevy_transform::components::transform::Transform
/// ```
#[derive(FromArgs)]
struct Args {
/// the host IP address to connect to
#[argh(option, default = "DEFAULT_ADDR.to_string()")]
host: String,
/// the port to connect to
#[argh(option, default = "DEFAULT_PORT")]
port: u16,
/// the full type names of the components to query for
#[argh(positional, greedy)]
components: Vec<String>,
}
/// The application entry point.
fn main() -> AnyhowResult<()> {
// Parse the arguments.
let args: Args = argh::from_env();
// Create the URL. We're going to need it to issue the HTTP request.
let host_part = format!("{}:{}", args.host, args.port);
let url = format!("http://{}/", host_part);
let req = BrpRequest {
jsonrpc: String::from("2.0"),
method: String::from(BRP_QUERY_METHOD),
id: Some(ureq::json!(1)),
params: Some(
serde_json::to_value(BrpQueryParams {
data: BrpQuery {
components: args.components,
option: Vec::default(),
has: Vec::default(),
},
strict: false,
filter: BrpQueryFilter::default(),
})
.expect("Unable to convert query parameters to a valid JSON value"),
),
};
let res = ureq::post(&url)
.send_json(req)?
.into_json::<serde_json::Value>()?;
println!("{:#}", res);
Ok(())
}