feat(launcher): -edit without a scenery opens the wizard of a new scenery: file name, title and centre, picked on the OpenStreetMap map of geoportal.gov.pl in PUWG 1992 or given in degrees; the scenery is written with the centre as its //$g reference and opened in the editor; a bare -edit no longer loads the scenery of eu07.ini

launcher/scenery_wizard.h

@@ -0,0 +1,70 @@
+/*
+This Source Code Form is subject to the
+terms of the Mozilla Public License, v.
+2.0. If a copy of the MPL was not
+distributed with this file, You can
+obtain one at
+http://mozilla.org/MPL/2.0/.
+*/
+
+#pragma once
+
+#include "application/uilayer.h"
+
+#include <cstdint>
+#include <future>
+#include <string>
+#include <vector>
+
+namespace ui
+{
+
+class scenerywizard_panel : public ui_panel
+{
+  public:
+	scenerywizard_panel();
+	~scenerywizard_panel() override;
+
+	void render_contents() override;
+
+  private:
+	struct map_result
+	{
+		glm::dvec2 low{0.0};
+		glm::dvec2 high{0.0};
+		int width{0};
+		int height{0};
+		std::vector<std::uint8_t> pixels;
+		std::string error;
+	};
+
+	void render_map(glm::vec2 const &Size);
+	void render_form();
+	void request_map(glm::vec2 const &Size);
+	void upload_map();
+	void pick(glm::dvec2 const &Point);
+	bool create_scenery();
+
+	glm::dvec2 m_centre{515000.0, 460000.0};
+	double m_scale{1000.0};
+	bool m_fitted{false};
+	double m_changed{0.0};
+	bool m_dirty{true};
+	glm::vec2 m_pressed{0.f};
+	bool m_dragging{false};
+
+	std::future<map_result> m_request;
+	unsigned int m_texture{0};
+	glm::dvec2 m_image_low{0.0};
+	glm::dvec2 m_image_high{0.0};
+	std::string m_map_error;
+
+	bool m_picked{false};
+	glm::dvec2 m_point{0.0};
+	char m_name[64]{};
+	char m_title[128]{};
+	char m_latlon[64]{};
+	std::string m_status;
+};
+
+} // namespace ui