feat(editor): track editor driven by what the cursor is over: the outline and a label show what a click or a drag does, snapping to free ends on the screen, handles and ends dragged directly, no rotation gizmo; laying from a free end the same in every mode, straight with Shift, the curve of a switch going on past its diverging end; height 0 where there's no terrain; placed switch leaves the switch mode, double slips listed apart, a drive of the switch placed with it by the //$e switch description of its template; compound curves of any number of radii; dragged end of a straight fits the curve beside it; name of a path, followed by the memory cells and the includes taking it; turntable placed from a template described as one, tracks led out of it and the tracks around fitted to it, its positions written to the include; infrastructure bound to the path whose events read its memory cell; terrain made where the route has none and shaped to the formation under the ballast; models along the track over the selected path and on along the joined ones while dragged, rarely used settings folded; vehicles and trainsets placed on any path, switches included, facing the way the arrow shows; joined paths spread into the selection; New scenery in the File menu starts the editor again with the wizard; ortho zoom towards the cursor; scripted self tests; Polish translation

application/editoruilayer.h

@@ -68,6 +68,7 @@ class editor_ui : public ui_layer
 	}
 	// actions of the file menu, performed by the editor mode
 	void set_file_actions(std::function<void()> Save, std::function<void()> Export);
+	void set_new_scenery(std::function<void()> New) { m_newscenery = std::move(New); }
 	// shows outcome of an operation in the layers window
 	void set_status(std::string const &Status, bool const Error = false);
 
@@ -84,6 +85,7 @@ class editor_ui : public ui_layer
 	includes_panel m_includespanel{"Include database", false};
 	std::function<void()> m_save;
 	std::function<void()> m_export;
+	std::function<void()> m_newscenery;
 	brush_object_list m_brushobjects;
 	bool m_insertrandom{false}; // insert mode picks a random template from m_insertset
 	model_set_ref m_insertset;