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Injection: session-only auto re-attach on relaunch

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Add an "Auto re-attach this game on relaunch" checkbox (default off, never
persisted, shown while attached or terminated). While on and the target has
terminated, the host polls the process list for the same image name and
re-injects the moment it reappears -- built on the existing
re-attach-by-image-name path, so there's no target to pick. The kill+relaunch
recovery for a wrong audio format: re-attaching early catches
IAudioClient::Initialize and reads the exact format.

Validated live (harness): inject coop_tone -> kill -> relaunch -> auto
re-injected into the new pid, and early enough that the format came back as
Exact. Trim README.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
BlackMark
2026-06-22 02:03:13 +02:00
parent 32028cb286
commit b00b516cdb
4 changed files with 59 additions and 9 deletions
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43
host/src/injection_panel.cpp
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@@ -115,6 +115,37 @@ void InjectionPanel::close_target_handle()
void InjectionPanel::tick()
{
update_liveness();
auto_reattach_tick();
}
void InjectionPanel::auto_reattach_tick()
{
if (!auto_reattach_ || target_state_ != TargetState::Terminated || selected_name_.empty())
{
return;
}
// Poll the process list a couple of times a second (cheap, and we want to catch the
// relaunch early to read the exact audio format before the game creates its client).
const double now = ImGui::GetTime();
if (now - last_auto_poll_ < 0.5)
{
return;
}
last_auto_poll_ = now;
refresh_processes();
for (const ProcessEntry& e : processes_)
{
if (iequals_name(e.exe_name, selected_name_))
{
// The same game relaunched -> tear down the stale channel and re-attach to it.
server_.stop();
close_target_handle();
injected_ = false;
selected_pid_ = e.pid;
inject_selected(); // logs success/failure in status_; retried next poll on failure
break;
}
}
}
void InjectionPanel::update_liveness()
@@ -538,6 +569,18 @@ void InjectionPanel::draw(bool debug_details)
ImGui::SameLine();
ImGui::TextDisabled("(relaunched %s)", narrow(selected_name_).c_str());
}
// Session-only auto re-attach: tick it (while attached or terminated), then kill +
// relaunch the game and it re-injects itself early -- the kill+relaunch fix for a
// wrong audio format, without picking a target again.
if (!selected_name_.empty())
{
ImGui::Checkbox("Auto re-attach this game on relaunch", &auto_reattach_);
if (auto_reattach_ && target_state_ == TargetState::Terminated)
{
ImGui::SameLine();
ImGui::TextColored(kGrey, "(watching for %s...)", narrow(selected_name_).c_str());
}
}
ImGui::Separator();
}