add File>Reload Project

forms/mainwindow.ui

@@ -561,7 +561,7 @@
                     <rect>
                      <x>0</x>
                      <y>0</y>
-                     <width>545</width>
+                     <width>542</width>
                      <height>628</height>
                     </rect>
                    </property>
@@ -767,7 +767,7 @@
                      <rect>
                       <x>8</x>
                       <y>0</y>
-                      <width>221</width>
+                      <width>224</width>
                       <height>324</height>
                      </rect>
                     </property>
@@ -1118,7 +1118,7 @@
                            <rect>
                             <x>0</x>
                             <y>0</y>
-                            <width>231</width>
+                            <width>234</width>
                             <height>83</height>
                            </rect>
                           </property>
@@ -2886,6 +2886,7 @@
      <string>File</string>
     </property>
     <addaction name="action_Open_Project"/>
+    <addaction name="action_Reload_Project"/>
     <addaction name="action_Save"/>
     <addaction name="action_Save_Project"/>
     <addaction name="separator"/>
@@ -3172,6 +3173,11 @@
     <string>Themes...</string>
    </property>
   </action>
+  <action name="action_Reload_Project">
+   <property name="text">
+    <string>Reload Project</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <customwidgets>

include/mainwindow.h

@@ -42,6 +42,7 @@ public slots:
 
 private slots:
     void on_action_Open_Project_triggered();
+    void on_action_Reload_Project_triggered();
     void on_mapList_activated(const QModelIndex &index);
     void on_action_Save_Project_triggered();
     void openWarpMap(QString map_name, QString warp_num);

include/project.h

@@ -64,6 +64,9 @@ public:
 
     void set_root(QString);
 
+    void clearMapCache();
+    void clearTilesetCache();
+
     struct DataQualifiers
     {
         bool isStatic;

src/mainwindow.cpp

@@ -306,7 +306,10 @@ bool MainWindow::openProject(QString dir) {
                && populateMapList()
                && setMap(getDefaultMap(), true);
     } else {
-        success = loadDataStructures() && populateMapList() && setMap(editor->map->name, true);
+        QString open_map = editor->map->name;
+        editor->project->clearMapCache();
+        editor->project->clearTilesetCache();
+        success = loadDataStructures() && populateMapList() && setMap(open_map, true);
     }
 
     if (success) {
@@ -373,6 +376,19 @@ void MainWindow::on_action_Open_Project_triggered()
     }
 }
 
+void MainWindow::on_action_Reload_Project_triggered() {
+    // TODO: when undo history is complete show only if has unsaved changes
+    QMessageBox warning(this);
+    warning.setText("WARNING");
+    warning.setInformativeText("Reloading this project will discard any unsaved changes.");
+    warning.setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);
+    warning.setIcon(QMessageBox::Warning);
+
+    if (warning.exec() == QMessageBox::Ok) {
+        openProject(editor->project->root);
+    }
+}
+
 bool MainWindow::setMap(QString map_name, bool scrollTreeView) {
     logInfo(QString("Setting map to '%1'").arg(map_name));
     if (map_name.isEmpty()) {

src/project.cpp

@@ -77,7 +77,9 @@ Project::~Project()
     delete this->mapConstantsToMapNames;
     delete this->mapNamesToMapConstants;
     
+    clearMapCache();
     delete this->mapCache;
+    clearTilesetCache();
     delete this->tilesetCache;
 }
 
@@ -94,6 +96,20 @@ QString Project::getProjectTitle() {
     }
 }
 
+void Project::clearMapCache() {
+    for (QString mapName : mapCache->keys()) {
+        Map *map = mapCache->take(mapName);
+        if (map) delete map;
+    }
+}
+
+void Project::clearTilesetCache() {
+    for (QString tilesetName : tilesetCache->keys()) {
+        Tileset *tileset = tilesetCache->take(tilesetName);
+        if (tileset) delete tileset;
+    }
+}
+
 Map* Project::loadMap(QString map_name) {
     Map *map;
     if (mapCache->contains(map_name)) {