add NewLevel action

include/NazaraEditor/Core.hpp

@@ -3,6 +3,7 @@
 #include <NazaraEditor/Core/Core.hpp>
 #include <NazaraEditor/Core/Application/Action.hpp>
 #include <NazaraEditor/Core/Application/ActionStack.hpp>
+#include <NazaraEditor/Core/Application/Actions/EditorAction_Level_New.hpp>
 #include <NazaraEditor/Core/Application/Actions/EditorAction_Log_Clear.hpp>
 #include <NazaraEditor/Core/Application/Actions/EditorAction_Log_CopyToClipboard.hpp>
 #include <NazaraEditor/Core/Application/BaseApplication.hpp>

include/NazaraEditor/Core/Application/Actions/EditorAction_Level_New.hpp

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <NazaraEditor/Core/Application/Action.hpp>
+
+namespace Nz
+{
+	class NAZARAEDITOR_CORE_API EditorAction_Level_New final
+		: public EditorAction
+	{
+		EDITORACTION_BODY(EditorAction_Level_New, false);
+
+	public:
+		void Execute() override;
+	};
+}

include/NazaraEditor/Core/Application/BaseApplication.hpp

@@ -39,10 +39,11 @@ namespace Nz
 
 		void SetResourceFolder(const std::filesystem::path& path) { m_resourceFolder = path; }
 		std::filesystem::path GetResourceFolder() const { return m_resourceFolder; }
+
 		Nz::Level& GetLevel();
-		bool NewLevel();
-		bool CloseLevel();
-		bool OpenLevel(const std::filesystem::path& path);
+		virtual bool NewLevel();
+		virtual bool CloseLevel() { return false; }
+		virtual bool OpenLevel(const std::filesystem::path& /*path*/) { return false; }
 
 		entt::handle CreateEntity(const std::string& name);
 

include/NazaraEditor/Editor/Application.hpp

@@ -7,6 +7,7 @@ namespace NzEditor
 	class Application
 		: public Nz::EditorBaseApplication
 	{
-
+	public:
+		virtual bool NewLevel() override;
 	};
 }