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Code Issues 156 Wiki Activity

hardware protocol v2: answer a subscription with current state

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The snapshot sent right after SUBSCRIBE was taken from the previous
frame, which on the first frame of a session meant every value came back
as UNAVAILABLE. The link now publishes the state of the current frame
before the received frames are processed.
This commit is contained in:
Hirek
2026-09-05 20:40:14 +00:00
parent 91be90548f
commit 6bfd21d135
2 changed files with 5 additions and 0 deletions
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3
hardware/hardware_manager.cpp
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@@ -202,6 +202,9 @@ void hardware_link::update( double const Deltatime, state_snapshot const &Snapsh
m_lastframeerrors = counters; m_lastframeerrors = counters;
m_session.add_frame_errors( delta ); m_session.add_frame_errors( delta );
// the session answers a subscription with an immediate snapshot, so it needs the current state first
m_session.set_snapshot( Snapshot );
for( auto const &packet : packets ) for( auto const &packet : packets )
{ {
m_session.handle_packet( packet ); m_session.handle_packet( packet );

2
hardware/protocol/protocol_session.h
View File

@@ -49,6 +49,8 @@ public:
void reset(); void reset();
// consumes one decoded frame // consumes one decoded frame
void handle_packet( decoded_packet const &Packet ); void handle_packet( decoded_packet const &Packet );
// publishes the state of the current simulation frame, before the received frames are processed
void set_snapshot( state_snapshot const &Snapshot ) { m_snapshot = Snapshot; }
// periodic work: heartbeats, subscription updates, timeouts // periodic work: heartbeats, subscription updates, timeouts
void update( double const Deltatime, state_snapshot const &Snapshot ); void update( double const Deltatime, state_snapshot const &Snapshot );
// copies the current condition into the debug report // copies the current condition into the debug report