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use bevy::prelude::*;
use log::debug;
use crate::prelude::*;
pub trait TrackAppExt {
/// Enables mutate messages tracking.
///
/// Server will start sending mutate messages each tick even if they empty
/// and include the amount of the messages for each header.
///
/// Client will track the received messages using
/// [`ServerMutateTicks`](crate::client::server_mutate_ticks::ServerMutateTicks).
///
/// Needs to be called by rollback crates to assume that the entity value didn't change
/// on a tick if all updates were received and
/// [`ConfirmHistory`](crate::client::confirm_history::ConfirmHistory)
/// don't have this tick confirmed.
fn track_mutate_messages(&mut self) -> &mut Self;
}
impl TrackAppExt for App {
fn track_mutate_messages(&mut self) -> &mut Self {
let mut track = self.world_mut().resource_mut::<TrackMutateMessages>();
if track.0 {
debug!("mutate message tracking was already enabled, ignoring duplicate call");
return self;
}
track.0 = true;
self.world_mut()
.resource_mut::<ProtocolHasher>()
.track_mutate_messages();
self
}
}
#[derive(Resource, Deref, Default, Debug, Clone, Copy)]
pub(crate) struct TrackMutateMessages(bool);