implement debug draw mode

src/ui/GameWorldView.cpp

@@ -117,6 +117,7 @@ GameWorldView::GameWorldView(Simulation* sim, const GameConfig* config,
     , m_dragging(false)
     , m_demolishMode(false)
     , m_demolishHoverId(kInvalidEntityId)
+    , m_debugDraw(false)
     , m_boxSelecting(false)
     , m_scrollLeft(false)
     , m_scrollRight(false)
@@ -246,6 +247,7 @@ void GameWorldView::paintGL()
     drawBuildings(painter);
     drawBeltItems(painter);
     drawScrap(painter);
+    if (m_debugDraw) { drawDebugSensorRanges(painter); }
     drawShips(painter);
     drawBeams(painter);
     drawOverlays(painter);
@@ -775,6 +777,42 @@ void GameWorldView::drawShips(QPainter& painter)
     }
 }
 
+void GameWorldView::drawDebugSensorRanges(QPainter& painter)
+{
+    painter.setBrush(Qt::NoBrush);
+    for (const Ship& ship : m_sim->ships().allShips())
+    {
+        const ShipRole role = shipRole(ship);
+        const std::map<ShipRole, ShipVisuals>::const_iterator it =
+            m_visuals->ships.find(role);
+        if (it == m_visuals->ships.end()) { continue; }
+
+        float range = 0.0f;
+        if (ship.weapon.has_value())
+        {
+            range = ship.weapon->range;
+        }
+        else if (ship.repairTool.has_value())
+        {
+            range = ship.repairTool->range;
+        }
+        else if (ship.cargo.has_value())
+        {
+            range = ship.cargo->collectionRange * 5.0f;
+        }
+        else
+        {
+            continue;
+        }
+
+        const QPointF center   = worldToWidget(ship.position);
+        const qreal   radiusPx = static_cast<qreal>(range)
+                                 * static_cast<qreal>(tilePx());
+        painter.setPen(QPen(it->second.outline, 1));
+        painter.drawEllipse(center, radiusPx, radiusPx);
+    }
+}
+
 void GameWorldView::drawBeams(QPainter& painter)
 {
     painter.setPen(QPen(m_visuals->beams.color, m_visuals->beams.widthPx));
@@ -996,6 +1034,9 @@ void GameWorldView::keyPressEvent(QKeyEvent* event)
     case Qt::Key_Backspace:
         toggleDemolishMode();
         break;
+    case Qt::Key_M:
+        m_debugDraw = !m_debugDraw;
+        break;
     default:
         QOpenGLWidget::keyPressEvent(event);
         break;