add GeneratorScript

src/logic/scripting/scripting.hpp

@@ -32,6 +32,7 @@ class BlocksController;
 class LevelController;
 class Entity;
 struct EntityDef;
+class GeneratorScript;
 
 namespace scripting {
     extern Engine* engine;
@@ -50,6 +51,7 @@ namespace scripting {
 
     scriptenv get_root_environment();
     scriptenv create_pack_environment(const ContentPack& pack);
+    scriptenv create_environment();
     scriptenv create_doc_environment(
         const scriptenv& parent, const std::string& name
     );
@@ -144,6 +146,10 @@ namespace scripting {
 
     void load_entity_component(const std::string& name, const fs::path& file);
 
+    std::unique_ptr<GeneratorScript> load_generator(
+        const fs::path& file
+    );
+
     /// @brief Load package-specific world script
     /// @param env environment
     /// @param packid content-pack id