Added script-listener to packs loading

src/content/ContentLoader.cpp

@@ -334,12 +334,16 @@ void ContentLoader::load() {
 
     fixPackIndices();
 
+    loadMainScript(*runtime);
+
     auto folder = pack->folder;
 
     builder.defaults = paths.readCombinedObject(
         EnginePaths::CONFIG_DEFAULTS.string()
     );
 
+    scripting::on_content_initialization();
+
     // Load world generators
     io::path generatorsDir = folder / "generators";
     foreach_file(generatorsDir, [this](const io::path& file) {
@@ -462,6 +466,21 @@ void ContentLoader::reloadScript(const Content& content, ItemDef& item) {
     load_script(content, item);
 }
 
+void ContentLoader::loadMainScript(ContentPackRuntime& runtime) {
+    const auto& pack = runtime.getInfo();
+    const auto& folder = pack.folder;
+    io::path scriptFile = folder / "scripts/main.lua";
+    if (io::is_regular_file(scriptFile)) {
+        scripting::load_main_script(
+            runtime.getEnvironment(),
+            pack.id,
+            scriptFile,
+            pack.id + ":scripts/main.lua",
+            runtime.mainfuncsset
+        );
+    }
+}
+
 void ContentLoader::loadWorldScript(ContentPackRuntime& runtime) {
     const auto& pack = runtime.getInfo();
     const auto& folder = pack.folder;
@@ -478,6 +497,7 @@ void ContentLoader::loadWorldScript(ContentPackRuntime& runtime) {
 }
 
 void ContentLoader::loadScripts(Content& content) {
+    scripting::on_content_loading();
     load_scripts(content, content.blocks);
     load_scripts(content, content.items);
 
@@ -486,7 +506,7 @@ void ContentLoader::loadScripts(Content& content) {
         const auto& pack = runtime->getInfo();
         const auto& folder = pack.folder;
         
-        // Load main world script
+        // Load world script
         loadWorldScript(*runtime);
 
         // Load entity components
@@ -501,6 +521,8 @@ void ContentLoader::loadScripts(Content& content) {
             );
         });
     }
+
+    scripting::on_content_loaded();
 }
 
 void ContentLoader::loadResources(ResourceType type, const dv::value& list) {

src/content/ContentLoader.hpp

@@ -58,6 +58,7 @@ public:
     void load();
 
     static void loadScripts(Content& content);
+    static void loadMainScript(ContentPackRuntime& pack);
     static void loadWorldScript(ContentPackRuntime& pack);
     static void reloadScript(const Content& content, Block& block);
     static void reloadScript(const Content& content, ItemDef& item);

src/content/ContentPack.hpp

@@ -129,12 +129,17 @@ struct WorldFuncsSet {
     bool oninventoryclosed;
 };
 
+struct MainFuncsSet {
+    bool oncontentloading;
+};
+
 class ContentPackRuntime {
     ContentPack info;
     ContentPackStats stats {};
     scriptenv env;
 public:
     WorldFuncsSet worldfuncsset {};
+    MainFuncsSet mainfuncsset {};
 
     ContentPackRuntime(ContentPack info, scriptenv env);
     ~ContentPackRuntime();

src/logic/scripting/scripting.cpp

@@ -627,6 +627,36 @@ void scripting::on_ui_close(UiDocument* layout, Inventory* inventory) {
     });
 }
 
+void scripting::on_content_initialization() {
+    auto L = lua::get_main_state();
+    
+    for (auto& pack : content_control->getAllContentPacks()) {
+        lua::emit_event(L, pack.id + ":.oncontentinitialization", [](auto L) {
+            return 0;
+        });
+    }
+}
+
+void scripting::on_content_loading() {
+    auto L = lua::get_main_state();
+    
+    for (auto& pack : content_control->getAllContentPacks()) {
+        lua::emit_event(L, pack.id + ":.oncontentloading", [](auto L) {
+            return 0;
+        });
+    }
+}
+
+void scripting::on_content_loaded() {
+    auto L = lua::get_main_state();
+    
+    for (auto& pack : content_control->getAllContentPacks()) {
+        lua::emit_event(L, pack.id + ":.oncontentloaded", [](auto L) {
+            return 0;
+        });
+    }
+}
+
 bool scripting::register_event(
     int env, const std::string& name, const std::string& id
 ) {
@@ -763,6 +793,21 @@ void scripting::load_world_script(
         register_event(env, "on_inventory_closed", prefix + ":.inventoryclosed");
 }
 
+void scripting::load_main_script(
+    const scriptenv& senv,
+    const std::string& prefix,
+    const io::path& file,
+    const std::string& fileName,
+    MainFuncsSet& funcsset
+) {
+    int env = *senv;
+    lua::pop(lua::get_main_state(), load_script(env, "main", file, fileName));
+
+    register_event(env, "on_content_initialization", prefix + ":.oncontentinitialization");
+    register_event(env, "on_content_loading", prefix + ":.oncontentloading");
+    register_event(env, "on_content_loaded", prefix + ":.oncontentloaded");
+}
+
 void scripting::load_layout_script(
     const scriptenv& senv,
     const std::string& prefix,

src/logic/scripting/scripting.hpp

@@ -27,6 +27,7 @@ struct BlockFuncNamesCache;
 struct ItemFuncsSet;
 struct ItemFuncNamesCache;
 struct WorldFuncsSet;
+struct MainFuncsSet;
 struct UserComponent;
 struct UiDocScript;
 class BlocksController;
@@ -160,6 +161,15 @@ namespace scripting {
     /// @brief Called on UI view close
     void on_ui_close(UiDocument* layout, Inventory* inventory);
 
+    /// @brief Called before loading
+    void on_content_initialization();
+
+    /// @brief Called on Content loading
+    void on_content_loading();
+
+    /// @brief Called on Content loading finish
+    void on_content_loaded();
+
     /// @brief Load script associated with a Block
     /// @param env environment
     /// @param prefix pack id
@@ -221,6 +231,14 @@ namespace scripting {
         WorldFuncsSet& funcsset
     );
 
+    void load_main_script(
+        const scriptenv& env,
+        const std::string& packid,
+        const io::path& file,
+        const std::string& fileName,
+        MainFuncsSet& funcsset
+    );
+
     /// @brief Load script associated with an UiDocument
     /// @param env environment
     /// @param prefix pack id