add Map class destructor to manage Event memory

include/core/map.h

@@ -29,6 +29,7 @@ class Map : public QObject
     Q_OBJECT
 public:
     explicit Map(QObject *parent = nullptr);
+    ~Map();
 
 public:
     QString name;
@@ -92,6 +93,9 @@ public:
     void cacheBorder();
     bool hasUnsavedChanges();
 
+    // for memory management
+    QVector<Event *> ownedEvents;
+
     MapPixmapItem *mapItem = nullptr;
     void setMapItem(MapPixmapItem *item) { mapItem = item; }
 

src/core/editcommands.cpp

@@ -324,7 +324,6 @@ EventShift::~EventShift() {}
 
 EventCreate::EventCreate(Editor *editor, Map *map, Event *event,
     QUndoCommand *parent) : QUndoCommand(parent) {
-    //
     setText("Create Event");
 
     this->editor = editor;

src/core/map.cpp

@@ -16,6 +16,14 @@ Map::Map(QObject *parent) : QObject(parent)
     editHistory.setClean();
 }
 
+Map::~Map() {
+    // delete all associated events
+    while (!ownedEvents.isEmpty()) {
+        Event *last = ownedEvents.takeLast();
+        if (last) delete last;
+    }
+}
+
 void Map::setName(QString mapName) {
     name = mapName;
     constantName = mapConstantFromName(mapName);
@@ -457,6 +465,7 @@ void Map::removeEvent(Event *event) {
 
 void Map::addEvent(Event *event) {
     events[event->get("event_group_type")].append(event);
+    if (!ownedEvents.contains(event)) ownedEvents.append(event);
 }
 
 bool Map::hasUnsavedChanges() {