31 lines
1.3 KiB
Rust
31 lines
1.3 KiB
Rust
use bevy::prelude::*;
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/// This example illustrates how to use logs in bevy
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fn main() {
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App::build()
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// Uncomment this to override the default log settings:
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// .add_resource(bevy::log::LogSettings {
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// level: bevy::log::Level::TRACE,
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// filter: "wgpu=warn,bevy_ecs=info".to_string(),
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// })
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.add_plugins(DefaultPlugins)
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.add_system(log_system.system())
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.run();
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}
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fn log_system() {
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// here is how you write new logs at each "log level" (in "least important" to "most important" order)
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trace!("very noisy");
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debug!("helpful for debugging");
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info!("helpful information that is worth printing by default");
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warn!("something bad happened that isn't a failure, but thats worth calling out");
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error!("something failed");
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// by default, trace and debug logs are ignored because they are "noisy"
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// you can control what level is logged by adding the LogSettings resource
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// alternatively you can set the log level via the RUST_LOG=LEVEL environment variable
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// ex: RUST_LOG=trace, RUST_LOG=info,bevy_ecs=warn
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// the format used here is super flexible. check out this documentation for more info:
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// https://docs.rs/tracing-subscriber/*/tracing_subscriber/filter/struct.EnvFilter.html
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}
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