From 099f0b55fc4f50ba95eeb2f3ba33dcddc99cdcc4 Mon Sep 17 00:00:00 2001
From: Malte Langkabel <malte.langkabel@gmail.com>
Date: Mon, 3 Aug 2026 21:54:02 +0200
Subject: [PATCH] make HeaderBar read the tick, artifacts and boss wave from
 the simulation

The last three payloads HeaderBar still consumed as truth. All are backed by
Simulation getters (getCurrentTick, getArtifactCount, getBossWaveCounter,
getBossCountdownTicks) and the win count by world.artifacts.artifactWinCount,
so the handlers now re-read rather than trust the event.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YHcUerKAZKWNvSKJxYKbnG
---
 src/ui/HeaderBar.cpp | 20 ++++++++++++--------
 src/ui/HeaderBar.h   |  4 ++--
 2 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/src/ui/HeaderBar.cpp b/src/ui/HeaderBar.cpp
index 1a2458b..8227016 100644
--- a/src/ui/HeaderBar.cpp
+++ b/src/ui/HeaderBar.cpp
@@ -107,9 +107,9 @@ HeaderBar::~HeaderBar()
     unregisterForEvents();
 }
 
-void HeaderBar::handleEvent(std::shared_ptr<const TickAdvancedEvent> event)
+void HeaderBar::handleEvent(std::shared_ptr<const TickAdvancedEvent> /*event*/)
 {
-    const int totalSeconds = static_cast<int>(ticksToSeconds(event->tick));
+    const int totalSeconds = static_cast<int>(ticksToSeconds(m_sim->getCurrentTick()));
     m_timeLabel->setText(
         QString("%1:%2")
             .arg(totalSeconds / 60, 2, 10, QChar('0'))
@@ -195,22 +195,26 @@ void HeaderBar::handleEvent(std::shared_ptr<const GameSpeedChangedEvent> event)
     }
 }
 
-void HeaderBar::handleEvent(std::shared_ptr<const BossWaveUpdatedEvent> event)
+void HeaderBar::handleEvent(std::shared_ptr<const BossWaveUpdatedEvent> /*event*/)
 {
-    const int bossSeconds = static_cast<int>(
-        ticksToSeconds(event->countdownTicks > 0 ? event->countdownTicks : 0));
+    const Tick countdownTicks = m_sim->getBossCountdownTicks();
+    const int  bossSeconds    = static_cast<int>(
+        ticksToSeconds(countdownTicks > 0 ? countdownTicks : 0));
 	m_bossWaveLabel->setText(
 		tr("Boss Wave #%1")
-		.arg(event->counter));
+		.arg(m_sim->getBossWaveCounter()));
 	m_nextBossLabel->setText(
 		tr("Next boss: %1:%2")
 		.arg(bossSeconds / 60)
 		.arg(bossSeconds % 60, 2, 10, QChar('0')));
 }
 
-void HeaderBar::handleEvent(std::shared_ptr<const ArtifactCountChangedEvent> event)
+void HeaderBar::handleEvent(std::shared_ptr<const ArtifactCountChangedEvent> /*event*/)
 {
-    m_artifactsLabel->setText(tr("Artifacts: %1/%2").arg(event->count).arg(event->winCount));
+    m_artifactsLabel->setText(
+        tr("Artifacts: %1/%2")
+            .arg(m_sim->getArtifactCount())
+            .arg(m_sim->getConfig().world.artifacts.artifactWinCount));
 }
 
 void HeaderBar::onSpeedButton(int index)
diff --git a/src/ui/HeaderBar.h b/src/ui/HeaderBar.h
index 1bc7bea..2bb1f87 100644
--- a/src/ui/HeaderBar.h
+++ b/src/ui/HeaderBar.h
@@ -75,8 +75,8 @@ private:
 
     ItemIconCache*           m_itemIcons;  // Not owned; lives in MainWindow.
 
-    // The simulation is the single source of truth for the block stock and the
-    // expansion cost; the change events are only refresh signals.
+    // The simulation is the single source of truth for everything the header
+    // displays; the change events are only refresh signals.
     const Simulation*        m_sim;
 
     static const double kSpeeds[];