show threat budget in debug text overlay

src/ui/GameWorldView.cpp

@@ -292,7 +292,11 @@ void GameWorldView::paintGL()
     drawStations(painter);
     drawBeltItems(painter);
     drawScrap(painter);
-    if (m_debugDraw) { drawDebugSensorRanges(painter); }
+    if (m_debugDraw)
+    {
+        drawDebugSensorRanges(painter);
+        drawDebugOverlay(painter);
+    }
     drawShips(painter);
     drawBeams(painter);
     drawOverlays(painter);
@@ -937,6 +941,38 @@ void GameWorldView::drawDebugSensorRanges(QPainter& painter)
         });
 }
 
+void GameWorldView::drawDebugOverlay(QPainter& painter)
+{
+    painter.resetTransform();
+
+    const QString line1 = tr("Accumulated Threat Level: %1")
+        .arg(m_sim->threatLevel(), 0, 'f', 1);
+    const QString line2 = tr("Time until Wave: %1s")
+        .arg(ticksToSeconds(m_sim->normalGapRemainingTicks()), 0, 'f', 1);
+
+    QFont font = painter.font();
+    font.setPointSize(m_visuals->toast.fontSize);
+    painter.setFont(font);
+
+    const QFontMetrics fm = painter.fontMetrics();
+    const int lineH   = fm.height();
+    const int padding = 8;
+    const int spacing = 4;
+    const int textW   = std::max(fm.horizontalAdvance(line1),
+                                 fm.horizontalAdvance(line2));
+    const int bgW = textW + padding * 2;
+    const int bgH = lineH * 2 + spacing + padding * 2;
+
+    const QRect bgRect(padding, padding, bgW, bgH);
+    painter.fillRect(bgRect, QColor(0, 0, 0, 160));
+
+    painter.setPen(Qt::white);
+    const QRect textRect1(padding * 2, padding + padding, textW, lineH);
+    const QRect textRect2(padding * 2, textRect1.bottom() + spacing, textW, lineH);
+    painter.drawText(textRect1, Qt::AlignLeft | Qt::AlignVCenter, line1);
+    painter.drawText(textRect2, Qt::AlignLeft | Qt::AlignVCenter, line2);
+}
+
 void GameWorldView::drawBeams(QPainter& painter)
 {
     painter.setPen(QPen(m_visuals->beams.color, m_visuals->beams.widthPx));

src/ui/GameWorldView.h

@@ -85,6 +85,7 @@ private:
     void drawScrap(QPainter& painter);
     void drawShips(QPainter& painter);
     void drawDebugSensorRanges(QPainter& painter);
+    void drawDebugOverlay(QPainter& painter);
     void drawBeams(QPainter& painter);
     void drawOverlays(QPainter& painter);
     void drawScreenSpace(QPainter& painter);