EU7 scenery format and models streaming

scene/eu7/eu7_emit.h

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+/*
+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 "scene/eu7/eu7_types.h"
+
+#include <string>
+
+namespace scene::eu7 {
+
+// Sciezka tekstowa dla fallbacku include (source_path albo .eu7 -> .inc).
+[[nodiscard]] std::string
+    include_text_path( Eu7Include const &Include );
+
+// Emituje bloki "include ... end" dla parsera SCM.
+[[nodiscard]] std::string
+    emit_includes_text( std::vector<Eu7Include> const &Includes );
+
+// Emituje zawartosc modulu (bez INCL i bez terrain_shapes) do tekstu SCM.
+[[nodiscard]] std::string
+    emit_module_text( Eu7Module const &Module );
+
+// Torow, eventy, modele itd. — bez TERR/MESH/LINE (te ida bezposrednio z binarki).
+[[nodiscard]] std::string
+    emit_scene_objects_text( Eu7Module const &Module );
+
+} // namespace scene::eu7