switch to using own event system

src/balancing/ArenaView.h

@@ -9,7 +9,8 @@
 #include <QTimer>
 #include <QVector2D>
 
-#include "FireEvent.h"
+#include "EventHandler.h"
+#include "WeaponFiredEvent.h"
 
 #include "entt/entity/entity.hpp"
 #include "EntitySelectedEvent.h"
@@ -20,23 +21,21 @@
 class ArenaSimulation;
 class QPainter;
 
-class ArenaView : public QOpenGLWidget
+class ArenaView : public QOpenGLWidget,
+                  public EventHandler<WeaponFiredEvent>
 {
     Q_OBJECT
 
 public:
     ArenaView(ArenaSimulation* sim, const VisualsConfig* visuals,
               QWidget* parent = nullptr);
+    ~ArenaView() override;
 
     void setGameSpeed(double multiplier);
     double gameSpeed() const;
     void togglePause();
     void stopRendering();
 
-signals:
-    void speedChanged(double multiplier);
-    void finished();
-
 protected:
     void paintGL() override;
     void mousePressEvent(QMouseEvent* event) override;
@@ -45,6 +44,8 @@ private slots:
     void onFrame();
 
 private:
+    void handleEvent(std::shared_ptr<const WeaponFiredEvent> event) override;
+
     void drawTiles(QPainter& painter);
     void drawBuildings(QPainter& painter);
     void drawStations(QPainter& painter);
@@ -62,7 +63,7 @@ private:
 
     struct ActiveBeam
     {
-        FireEvent event;
+        WeaponFiredEvent event;
         qint64    emittedWallMs;
         QVector2D targetOffset;
     };