#5622: Add empty MergeMap command registration, no algorithm yet.

install/menu.xml

@@ -6,16 +6,17 @@
 		<menuItem name="open" caption="&amp;Open..." command="OpenMap" />
 		<menuItem name="openMapFromProject" caption="&amp;Open Map from Project..." command="OpenMapFromProject" />
 		<menuItem name="import" caption="&amp;Import map..." command="ImportMap" />
+		<menuItem name="mergeMap" caption="&amp;Merge map..." command="MergeMap" />
 		<menuItem name="loadprefab" caption="Import &amp;prefab..." command="LoadPrefab" />
 		<menuSeparator />
 		<menuItem name="save" caption="&amp;Save" command="SaveMap" />
 		<menuItem name="saveas" caption="Save &amp;as..." command="SaveMapAs" />
 		<menuItem name="saveCopyAs" caption="Save &amp;copy as..." command="SaveMapCopyAs" />
 		<menuSeparator />
-		<menuItem name="exportMap" caption="&amp;Export Map..." command="ExportMap" />
-		<menuItem name="saveSelected" caption="&amp;Export selected as Map..." command="SaveSelected" />
+		<menuItem name="exportMap" caption="Export Map..." command="ExportMap" />
+		<menuItem name="saveSelected" caption="Export selected as Map..." command="SaveSelected" />
 		<menuItem name="saveSelectedPrefab" caption="&amp;Export selected as Prefab..." command="SaveSelectedAsPrefab" />
-		<menuItem name="exportSelectedAsModel" caption="&amp;Export selected as Model..." command="ExportSelectedAsModelDialog" />
+		<menuItem name="exportSelectedAsModel" caption="Export selected as Model..." command="ExportSelectedAsModelDialog" />
 		<menuItem name="createCM" caption="Export selected as Collision Model..." command="ExportCollisionModelDialog" />
 		<menuItem name="saveRegion" caption="Export &amp;Region..." command="SaveRegion" />
 		<menuSeparator />

radiantcore/map/Map.cpp

@@ -711,6 +711,7 @@ void Map::registerCommands()
     GlobalCommandSystem().addCommand("OpenMap", Map::openMap, { cmd::ARGTYPE_STRING | cmd::ARGTYPE_OPTIONAL });
     GlobalCommandSystem().addCommand("OpenMapFromArchive", Map::openMapFromArchive, { cmd::ARGTYPE_STRING, cmd::ARGTYPE_STRING });
     GlobalCommandSystem().addCommand("ImportMap", Map::importMap);
+    GlobalCommandSystem().addCommand("MergeMap", std::bind(&Map::mergeMap, this, std::placeholders::_1), { cmd::ARGTYPE_STRING | cmd::ARGTYPE_OPTIONAL });
     GlobalCommandSystem().addCommand(LOAD_PREFAB_AT_CMD, std::bind(&Map::loadPrefabAt, this, std::placeholders::_1), 
         { cmd::ARGTYPE_STRING, cmd::ARGTYPE_VECTOR3, cmd::ARGTYPE_INT|cmd::ARGTYPE_OPTIONAL, cmd::ARGTYPE_INT | cmd::ARGTYPE_OPTIONAL });
     GlobalCommandSystem().addCommand("SaveSelectedAsPrefab", Map::saveSelectedAsPrefab);
@@ -923,6 +924,29 @@ void Map::exportSelected(std::ostream& out, const MapFormatPtr& format)
     exporter.exportMap(GlobalSceneGraph().root(), scene::traverseSelected);
 }
 
+void Map::mergeMap(const cmd::ArgumentList& args)
+{
+    std::string candidate;
+
+    if (!args.empty())
+    {
+        candidate = args[0].getString();
+    }
+    else
+    {
+        // No arguments passed, get the map file name to load
+        auto fileInfo = MapFileManager::getMapFileSelection(true, _("Select Map File to merge"), filetype::TYPE_MAP);
+        candidate = fileInfo.fullPath;
+    }
+
+    if (!os::fileOrDirExists(candidate))
+    {
+        throw cmd::ExecutionFailure(fmt::format(_("File doesn't exist: {0}"), candidate));
+    }
+
+
+}
+
 void Map::emitMapEvent(MapEvent ev)
 {
     try

radiantcore/map/Map.h

@@ -246,6 +246,8 @@ class Map :
 	void loadMapResourceFromPath(const std::string& path);
 	void loadMapResourceFromArchive(const std::string& archive, const std::string& archiveRelativePath);
 
+    void mergeMap(const cmd::ArgumentList& args);
+
 	void emitMapEvent(MapEvent ev);
 
 	void clearMapResource();